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0xVRP */ +# define COMPILER_VERSION_MAJOR HEX(__SUNPRO_C>>8) +# define COMPILER_VERSION_MINOR HEX(__SUNPRO_C>>4 & 0xF) +# define COMPILER_VERSION_PATCH HEX(__SUNPRO_C & 0xF) +# endif + +#elif defined(__HP_cc) +# define COMPILER_ID "HP" + /* __HP_cc = VVRRPP */ +# define COMPILER_VERSION_MAJOR DEC(__HP_cc/10000) +# define COMPILER_VERSION_MINOR DEC(__HP_cc/100 % 100) +# define COMPILER_VERSION_PATCH DEC(__HP_cc % 100) + +#elif defined(__DECC) +# define COMPILER_ID "Compaq" + /* __DECC_VER = VVRRTPPPP */ +# define COMPILER_VERSION_MAJOR DEC(__DECC_VER/10000000) +# define COMPILER_VERSION_MINOR DEC(__DECC_VER/100000 % 100) +# define COMPILER_VERSION_PATCH DEC(__DECC_VER % 10000) + +#elif defined(__IBMC__) && defined(__COMPILER_VER__) +# define COMPILER_ID "zOS" + /* __IBMC__ = VRP */ +# define COMPILER_VERSION_MAJOR DEC(__IBMC__/100) +# define COMPILER_VERSION_MINOR DEC(__IBMC__/10 % 10) +# define COMPILER_VERSION_PATCH DEC(__IBMC__ % 10) + +#elif defined(__IBMC__) && !defined(__COMPILER_VER__) && __IBMC__ >= 800 +# define COMPILER_ID "XL" + /* __IBMC__ = VRP */ +# define COMPILER_VERSION_MAJOR DEC(__IBMC__/100) +# define COMPILER_VERSION_MINOR DEC(__IBMC__/10 % 10) +# define COMPILER_VERSION_PATCH DEC(__IBMC__ % 10) + +#elif defined(__IBMC__) && !defined(__COMPILER_VER__) && __IBMC__ < 800 +# define COMPILER_ID "VisualAge" + /* __IBMC__ = VRP */ +# define COMPILER_VERSION_MAJOR DEC(__IBMC__/100) +# define COMPILER_VERSION_MINOR DEC(__IBMC__/10 % 10) +# define COMPILER_VERSION_PATCH DEC(__IBMC__ % 10) + +#elif defined(__PGI) +# define COMPILER_ID "PGI" +# define COMPILER_VERSION_MAJOR DEC(__PGIC__) +# define COMPILER_VERSION_MINOR DEC(__PGIC_MINOR__) +# if defined(__PGIC_PATCHLEVEL__) +# define COMPILER_VERSION_PATCH DEC(__PGIC_PATCHLEVEL__) +# endif + +#elif defined(_CRAYC) +# define COMPILER_ID "Cray" +# define COMPILER_VERSION_MAJOR DEC(_RELEASE_MAJOR) +# define COMPILER_VERSION_MINOR DEC(_RELEASE_MINOR) + +#elif defined(__TI_COMPILER_VERSION__) +# define COMPILER_ID "TI" + /* __TI_COMPILER_VERSION__ = VVVRRRPPP */ +# define COMPILER_VERSION_MAJOR DEC(__TI_COMPILER_VERSION__/1000000) +# define COMPILER_VERSION_MINOR DEC(__TI_COMPILER_VERSION__/1000 % 1000) +# define COMPILER_VERSION_PATCH DEC(__TI_COMPILER_VERSION__ % 1000) + +#elif defined(__FUJITSU) || defined(__FCC_VERSION) || defined(__fcc_version) +# define COMPILER_ID "Fujitsu" + +#elif defined(__TINYC__) +# define COMPILER_ID "TinyCC" + +#elif defined(__BCC__) +# define COMPILER_ID "Bruce" + +#elif defined(__SCO_VERSION__) +# define COMPILER_ID "SCO" + +#elif defined(__clang__) && defined(__apple_build_version__) +# define COMPILER_ID "AppleClang" +# if defined(_MSC_VER) +# define SIMULATE_ID "MSVC" +# endif +# define COMPILER_VERSION_MAJOR DEC(__clang_major__) +# define COMPILER_VERSION_MINOR DEC(__clang_minor__) +# define COMPILER_VERSION_PATCH DEC(__clang_patchlevel__) +# if defined(_MSC_VER) + /* _MSC_VER = VVRR */ +# define SIMULATE_VERSION_MAJOR DEC(_MSC_VER / 100) +# define SIMULATE_VERSION_MINOR DEC(_MSC_VER % 100) +# endif +# define COMPILER_VERSION_TWEAK DEC(__apple_build_version__) + +#elif defined(__clang__) +# define COMPILER_ID "Clang" +# if defined(_MSC_VER) +# define SIMULATE_ID "MSVC" +# endif +# define COMPILER_VERSION_MAJOR DEC(__clang_major__) +# define COMPILER_VERSION_MINOR DEC(__clang_minor__) +# define COMPILER_VERSION_PATCH DEC(__clang_patchlevel__) +# if defined(_MSC_VER) + /* _MSC_VER = VVRR */ +# define SIMULATE_VERSION_MAJOR DEC(_MSC_VER / 100) +# define SIMULATE_VERSION_MINOR DEC(_MSC_VER % 100) +# endif + +#elif defined(__GNUC__) +# define COMPILER_ID "GNU" +# define COMPILER_VERSION_MAJOR DEC(__GNUC__) +# if defined(__GNUC_MINOR__) +# define COMPILER_VERSION_MINOR DEC(__GNUC_MINOR__) +# endif +# if defined(__GNUC_PATCHLEVEL__) +# define COMPILER_VERSION_PATCH DEC(__GNUC_PATCHLEVEL__) +# endif + +#elif defined(_MSC_VER) +# define COMPILER_ID "MSVC" + /* _MSC_VER = VVRR */ +# define COMPILER_VERSION_MAJOR DEC(_MSC_VER / 100) +# define COMPILER_VERSION_MINOR DEC(_MSC_VER % 100) +# if defined(_MSC_FULL_VER) +# if _MSC_VER >= 1400 + /* _MSC_FULL_VER = VVRRPPPPP */ +# define COMPILER_VERSION_PATCH DEC(_MSC_FULL_VER % 100000) +# else + /* _MSC_FULL_VER = VVRRPPPP */ +# define COMPILER_VERSION_PATCH DEC(_MSC_FULL_VER % 10000) +# endif +# endif +# if defined(_MSC_BUILD) +# define COMPILER_VERSION_TWEAK DEC(_MSC_BUILD) +# endif + +#elif defined(__VISUALDSPVERSION__) || defined(__ADSPBLACKFIN__) || defined(__ADSPTS__) || defined(__ADSP21000__) +# define COMPILER_ID "ADSP" +#if defined(__VISUALDSPVERSION__) + /* __VISUALDSPVERSION__ = 0xVVRRPP00 */ +# define COMPILER_VERSION_MAJOR HEX(__VISUALDSPVERSION__>>24) +# define COMPILER_VERSION_MINOR HEX(__VISUALDSPVERSION__>>16 & 0xFF) +# define COMPILER_VERSION_PATCH HEX(__VISUALDSPVERSION__>>8 & 0xFF) +#endif + +#elif defined(__IAR_SYSTEMS_ICC__) || defined(__IAR_SYSTEMS_ICC) +# define COMPILER_ID "IAR" +# if defined(__VER__) +# define COMPILER_VERSION_MAJOR DEC((__VER__) / 1000000) +# define COMPILER_VERSION_MINOR DEC(((__VER__) / 1000) % 1000) +# define COMPILER_VERSION_PATCH DEC((__VER__) % 1000) +# define COMPILER_VERSION_INTERNAL DEC(__IAR_SYSTEMS_ICC__) +# endif + +#elif defined(__ARMCC_VERSION) +# define COMPILER_ID "ARMCC" +#if __ARMCC_VERSION >= 1000000 + /* __ARMCC_VERSION = VRRPPPP */ + # define COMPILER_VERSION_MAJOR DEC(__ARMCC_VERSION/1000000) + # define COMPILER_VERSION_MINOR DEC(__ARMCC_VERSION/10000 % 100) + # define COMPILER_VERSION_PATCH DEC(__ARMCC_VERSION % 10000) +#else + /* __ARMCC_VERSION = VRPPPP */ + # define COMPILER_VERSION_MAJOR DEC(__ARMCC_VERSION/100000) + # define COMPILER_VERSION_MINOR DEC(__ARMCC_VERSION/10000 % 10) + # define COMPILER_VERSION_PATCH DEC(__ARMCC_VERSION % 10000) +#endif + + +#elif defined(__SDCC_VERSION_MAJOR) || defined(SDCC) +# define COMPILER_ID "SDCC" +# if defined(__SDCC_VERSION_MAJOR) +# define COMPILER_VERSION_MAJOR DEC(__SDCC_VERSION_MAJOR) +# define COMPILER_VERSION_MINOR DEC(__SDCC_VERSION_MINOR) +# define COMPILER_VERSION_PATCH DEC(__SDCC_VERSION_PATCH) +# else + /* SDCC = VRP */ +# define COMPILER_VERSION_MAJOR DEC(SDCC/100) +# define COMPILER_VERSION_MINOR DEC(SDCC/10 % 10) +# define COMPILER_VERSION_PATCH DEC(SDCC % 10) +# endif + +#elif defined(_SGI_COMPILER_VERSION) || defined(_COMPILER_VERSION) +# define COMPILER_ID "MIPSpro" +# if defined(_SGI_COMPILER_VERSION) + /* _SGI_COMPILER_VERSION = VRP */ +# define COMPILER_VERSION_MAJOR DEC(_SGI_COMPILER_VERSION/100) +# define COMPILER_VERSION_MINOR DEC(_SGI_COMPILER_VERSION/10 % 10) +# define COMPILER_VERSION_PATCH DEC(_SGI_COMPILER_VERSION % 10) +# else + /* _COMPILER_VERSION = VRP */ +# define COMPILER_VERSION_MAJOR DEC(_COMPILER_VERSION/100) +# define COMPILER_VERSION_MINOR DEC(_COMPILER_VERSION/10 % 10) +# define COMPILER_VERSION_PATCH DEC(_COMPILER_VERSION % 10) +# endif + + +/* These compilers are either not known or too old to define an + identification macro. Try to identify the platform and guess that + it is the native compiler. */ +#elif defined(__sgi) +# define COMPILER_ID "MIPSpro" + +#elif defined(__hpux) || defined(__hpua) +# define COMPILER_ID "HP" + +#else /* unknown compiler */ +# define COMPILER_ID "" +#endif + +/* Construct the string literal in pieces to prevent the source from + getting matched. Store it in a pointer rather than an array + because some compilers will just produce instructions to fill the + array rather than assigning a pointer to a static array. */ +char const* info_compiler = "INFO" ":" "compiler[" COMPILER_ID "]"; +#ifdef SIMULATE_ID +char const* info_simulate = "INFO" ":" "simulate[" SIMULATE_ID "]"; +#endif + +#ifdef __QNXNTO__ +char const* qnxnto = "INFO" ":" "qnxnto[]"; +#endif + +#if defined(__CRAYXE) || defined(__CRAYXC) +char const *info_cray = "INFO" ":" "compiler_wrapper[CrayPrgEnv]"; +#endif + +#define STRINGIFY_HELPER(X) #X +#define STRINGIFY(X) STRINGIFY_HELPER(X) + +/* Identify known platforms by name. */ +#if defined(__linux) || defined(__linux__) || defined(linux) +# define PLATFORM_ID "Linux" + +#elif defined(__CYGWIN__) +# define PLATFORM_ID "Cygwin" + +#elif defined(__MINGW32__) +# define PLATFORM_ID "MinGW" + +#elif defined(__APPLE__) +# define PLATFORM_ID "Darwin" + +#elif defined(_WIN32) || defined(__WIN32__) || defined(WIN32) +# define PLATFORM_ID "Windows" + +#elif defined(__FreeBSD__) || defined(__FreeBSD) +# define PLATFORM_ID "FreeBSD" + +#elif defined(__NetBSD__) || defined(__NetBSD) +# define PLATFORM_ID "NetBSD" + +#elif defined(__OpenBSD__) || defined(__OPENBSD) +# define PLATFORM_ID "OpenBSD" + +#elif defined(__sun) || defined(sun) +# define PLATFORM_ID "SunOS" + +#elif defined(_AIX) || defined(__AIX) || defined(__AIX__) || defined(__aix) || defined(__aix__) +# define PLATFORM_ID "AIX" + +#elif defined(__sgi) || defined(__sgi__) || defined(_SGI) +# define PLATFORM_ID "IRIX" + +#elif defined(__hpux) || defined(__hpux__) +# define PLATFORM_ID "HP-UX" + +#elif defined(__HAIKU__) +# define PLATFORM_ID "Haiku" + +#elif defined(__BeOS) || defined(__BEOS__) || defined(_BEOS) +# define PLATFORM_ID "BeOS" + +#elif defined(__QNX__) || defined(__QNXNTO__) +# define PLATFORM_ID "QNX" + +#elif defined(__tru64) || defined(_tru64) || defined(__TRU64__) +# define PLATFORM_ID "Tru64" + +#elif defined(__riscos) || defined(__riscos__) +# define PLATFORM_ID "RISCos" + +#elif defined(__sinix) || defined(__sinix__) || defined(__SINIX__) +# define PLATFORM_ID "SINIX" + +#elif defined(__UNIX_SV__) +# define PLATFORM_ID "UNIX_SV" + +#elif defined(__bsdos__) +# define PLATFORM_ID "BSDOS" + +#elif defined(_MPRAS) || defined(MPRAS) +# define PLATFORM_ID "MP-RAS" + +#elif defined(__osf) || defined(__osf__) +# define PLATFORM_ID "OSF1" + +#elif defined(_SCO_SV) || defined(SCO_SV) || defined(sco_sv) +# define PLATFORM_ID "SCO_SV" + +#elif defined(__ultrix) || defined(__ultrix__) || defined(_ULTRIX) +# define PLATFORM_ID "ULTRIX" + +#elif defined(__XENIX__) || defined(_XENIX) || defined(XENIX) +# define PLATFORM_ID "Xenix" + +#elif defined(__WATCOMC__) +# if defined(__LINUX__) +# define PLATFORM_ID "Linux" + +# elif defined(__DOS__) +# define PLATFORM_ID "DOS" + +# elif defined(__OS2__) +# define PLATFORM_ID "OS2" + +# elif defined(__WINDOWS__) +# define PLATFORM_ID "Windows3x" + +# else /* unknown platform */ +# define PLATFORM_ID +# endif + +#else /* unknown platform */ +# define PLATFORM_ID + +#endif + +/* For windows compilers MSVC and Intel we can determine + the architecture of the compiler being used. This is because + the compilers do not have flags that can change the architecture, + but rather depend on which compiler is being used +*/ +#if defined(_WIN32) && defined(_MSC_VER) +# if defined(_M_IA64) +# define ARCHITECTURE_ID "IA64" + +# elif defined(_M_X64) || defined(_M_AMD64) +# define ARCHITECTURE_ID "x64" + +# elif defined(_M_IX86) +# define ARCHITECTURE_ID "X86" + +# elif defined(_M_ARM64) +# define ARCHITECTURE_ID "ARM64" + +# elif defined(_M_ARM) +# if _M_ARM == 4 +# define ARCHITECTURE_ID "ARMV4I" +# elif _M_ARM == 5 +# define ARCHITECTURE_ID "ARMV5I" +# else +# define ARCHITECTURE_ID "ARMV" STRINGIFY(_M_ARM) +# endif + +# elif defined(_M_MIPS) +# define ARCHITECTURE_ID "MIPS" + +# elif defined(_M_SH) +# define ARCHITECTURE_ID "SHx" + +# else /* unknown architecture */ +# define ARCHITECTURE_ID "" +# endif + +#elif defined(__WATCOMC__) +# if defined(_M_I86) +# define ARCHITECTURE_ID "I86" + +# elif defined(_M_IX86) +# define ARCHITECTURE_ID "X86" + +# else /* unknown architecture */ +# define ARCHITECTURE_ID "" +# endif + +#elif defined(__IAR_SYSTEMS_ICC__) || defined(__IAR_SYSTEMS_ICC) +# if defined(__ICCARM__) +# define ARCHITECTURE_ID "ARM" + +# elif defined(__ICCAVR__) +# define ARCHITECTURE_ID "AVR" + +# else /* unknown architecture */ +# define ARCHITECTURE_ID "" +# endif +#else +# define ARCHITECTURE_ID +#endif + +/* Convert integer to decimal digit literals. */ +#define DEC(n) \ + ('0' + (((n) / 10000000)%10)), \ + ('0' + (((n) / 1000000)%10)), \ + ('0' + (((n) / 100000)%10)), \ + ('0' + (((n) / 10000)%10)), \ + ('0' + (((n) / 1000)%10)), \ + ('0' + (((n) / 100)%10)), \ + ('0' + (((n) / 10)%10)), \ + ('0' + ((n) % 10)) + +/* Convert integer to hex digit literals. */ +#define HEX(n) \ + ('0' + ((n)>>28 & 0xF)), \ + ('0' + ((n)>>24 & 0xF)), \ + ('0' + ((n)>>20 & 0xF)), \ + ('0' + ((n)>>16 & 0xF)), \ + ('0' + ((n)>>12 & 0xF)), \ + ('0' + ((n)>>8 & 0xF)), \ + ('0' + ((n)>>4 & 0xF)), \ + ('0' + ((n) & 0xF)) + +/* Construct a string literal encoding the version number components. */ +#ifdef COMPILER_VERSION_MAJOR +char const info_version[] = { + 'I', 'N', 'F', 'O', ':', + 'c','o','m','p','i','l','e','r','_','v','e','r','s','i','o','n','[', + COMPILER_VERSION_MAJOR, +# ifdef COMPILER_VERSION_MINOR + '.', COMPILER_VERSION_MINOR, +# ifdef COMPILER_VERSION_PATCH + '.', COMPILER_VERSION_PATCH, +# ifdef COMPILER_VERSION_TWEAK + '.', COMPILER_VERSION_TWEAK, +# endif +# endif +# endif + ']','\0'}; +#endif + +/* Construct a string literal encoding the internal version number. */ +#ifdef COMPILER_VERSION_INTERNAL +char const info_version_internal[] = { + 'I', 'N', 'F', 'O', ':', + 'c','o','m','p','i','l','e','r','_','v','e','r','s','i','o','n','_', + 'i','n','t','e','r','n','a','l','[', + COMPILER_VERSION_INTERNAL,']','\0'}; +#endif + +/* Construct a string literal encoding the version number components. */ +#ifdef SIMULATE_VERSION_MAJOR +char const info_simulate_version[] = { + 'I', 'N', 'F', 'O', ':', + 's','i','m','u','l','a','t','e','_','v','e','r','s','i','o','n','[', + SIMULATE_VERSION_MAJOR, +# ifdef SIMULATE_VERSION_MINOR + '.', SIMULATE_VERSION_MINOR, +# ifdef SIMULATE_VERSION_PATCH + '.', SIMULATE_VERSION_PATCH, +# ifdef SIMULATE_VERSION_TWEAK + '.', SIMULATE_VERSION_TWEAK, +# endif +# endif +# endif + ']','\0'}; +#endif + +/* Construct the string literal in pieces to prevent the source from + getting matched. Store it in a pointer rather than an array + because some compilers will just produce instructions to fill the + array rather than assigning a pointer to a static array. */ +char const* info_platform = "INFO" ":" "platform[" PLATFORM_ID "]"; +char const* info_arch = "INFO" ":" "arch[" ARCHITECTURE_ID "]"; + + + + +#if !defined(__STDC__) +# if defined(_MSC_VER) && !defined(__clang__) +# define C_DIALECT "90" +# else +# define C_DIALECT +# endif +#elif __STDC_VERSION__ >= 201000L +# define C_DIALECT "11" +#elif __STDC_VERSION__ >= 199901L +# define C_DIALECT "99" +#else +# define C_DIALECT "90" +#endif +const char* info_language_dialect_default = + "INFO" ":" "dialect_default[" C_DIALECT "]"; + +/*--------------------------------------------------------------------------*/ + +#ifdef ID_VOID_MAIN +void main() {} +#else +# if defined(__CLASSIC_C__) +int main(argc, argv) int argc; char *argv[]; +# else +int main(int argc, char* argv[]) +# endif +{ + int require = 0; + require += info_compiler[argc]; + require += info_platform[argc]; + require += info_arch[argc]; +#ifdef COMPILER_VERSION_MAJOR + require += info_version[argc]; +#endif +#ifdef COMPILER_VERSION_INTERNAL + require += info_version_internal[argc]; +#endif +#ifdef SIMULATE_ID + require += info_simulate[argc]; +#endif +#ifdef SIMULATE_VERSION_MAJOR + require += info_simulate_version[argc]; +#endif +#if defined(__CRAYXE) || defined(__CRAYXC) + require += info_cray[argc]; +#endif + require += info_language_dialect_default[argc]; + (void)argv; + return require; +} +#endif diff --git a/CMakeFiles/3.10.2/CompilerIdC/a.out b/CMakeFiles/3.10.2/CompilerIdC/a.out new file mode 100755 index 0000000..11b7df4 Binary files /dev/null and b/CMakeFiles/3.10.2/CompilerIdC/a.out differ diff --git a/CMakeFiles/CMakeDirectoryInformation.cmake b/CMakeFiles/CMakeDirectoryInformation.cmake new file mode 100644 index 0000000..dcf7d00 --- /dev/null +++ b/CMakeFiles/CMakeDirectoryInformation.cmake @@ -0,0 +1,16 @@ +# CMAKE generated file: DO NOT EDIT! +# Generated by "Unix Makefiles" Generator, CMake Version 3.10 + +# Relative path conversion top directories. +set(CMAKE_RELATIVE_PATH_TOP_SOURCE "/home/derulin/Downloads/twtxtc/twtxtc") +set(CMAKE_RELATIVE_PATH_TOP_BINARY "/home/derulin/Downloads/twtxtc/twtxtc") + +# Force unix paths in dependencies. +set(CMAKE_FORCE_UNIX_PATHS 1) + + +# The C and CXX include file regular expressions for this directory. +set(CMAKE_C_INCLUDE_REGEX_SCAN "^.*$") +set(CMAKE_C_INCLUDE_REGEX_COMPLAIN "^$") +set(CMAKE_CXX_INCLUDE_REGEX_SCAN ${CMAKE_C_INCLUDE_REGEX_SCAN}) +set(CMAKE_CXX_INCLUDE_REGEX_COMPLAIN ${CMAKE_C_INCLUDE_REGEX_COMPLAIN}) diff --git a/CMakeFiles/CMakeOutput.log b/CMakeFiles/CMakeOutput.log new file mode 100644 index 0000000..f698ff7 --- /dev/null +++ b/CMakeFiles/CMakeOutput.log @@ -0,0 +1,202 @@ +The system is: Linux - 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@echo "... clean" + @echo "... depend" + @echo "... rebuild_cache" + @echo "... twtxtc" + @echo "... edit_cache" + @echo "... cJSON/cJSON.o" + @echo "... cJSON/cJSON.i" + @echo "... cJSON/cJSON.s" + @echo "... cJSON/cJSON_Utils.o" + @echo "... cJSON/cJSON_Utils.i" + @echo "... cJSON/cJSON_Utils.s" + @echo "... twtxt.o" + @echo "... twtxt.i" + @echo "... twtxt.s" +.PHONY : help + + + +#============================================================================= +# Special targets to cleanup operation of make. + +# Special rule to run CMake to check the build system integrity. +# No rule that depends on this can have commands that come from listfiles +# because they might be regenerated. +cmake_check_build_system: + $(CMAKE_COMMAND) -H$(CMAKE_SOURCE_DIR) -B$(CMAKE_BINARY_DIR) --check-build-system CMakeFiles/Makefile.cmake 0 +.PHONY : cmake_check_build_system + diff --git a/README.md b/README.md index ff4283d..5c9598f 100644 --- a/README.md +++ b/README.md @@ -1,2 +1,71 @@ -# twtxtc -C99 client for twtxt +# twtxtc: A twtxt client in C. + +## What is `twtxt`? + +`twtxt` is a decentralised, minimalist approach to micro-blogging, similar to Twitter but with self-hosted plaintext files. See the [original `twtxt` documentation](http://twtxt.readthedocs.io/en/latest/) for details. `twtxtc` is a `twtxt` client written in the C language. + +## Requirements + +Build or download an appropriate [`curl` binary](https://curl.haxx.se/download.html) for your system and place it into your `$PATH` or the `twtxtc` folder. If you don't, you won't be able to retrieve your timeline. Sorry. + +## Usage + + ./twtxtc [COMMAND] + +### Commands + + tweet Adds to your twtxt timeline. + timeline Displays your twtxt timeline. + following Gives you a list of all people you follow. + follow Adds the twtxt file from to your timeline. + defines the user name to display. + unfollow Removes the user with the display name from your timeline. + help Displays a help screen. + +## Building + +Use `cmake` to build `twtxtc`: + + cd path/to/source + cmake . + cmake --build . + +This should be all. + +### Compiler flags + +For lazyness reasons, `twtxtc` only uses colors in the most prominent place, namely in the timeline: By default you will get an adequate combination of yellow and white in the list. If you don't want to have such nice colors because you prefer boring plain text (and/or you want to process the output automatically), you can use the `NO_COLORS` compiler flag to disable them. + +## Configuration + +If found, `twtxtc` will use the `.twtxtconfig` file inside your `HOME` directory. (See `twtxtc help` for information on where it should be found.) The `.twtxtconfig` file is meant to be a valid JSON file like this: + + { + "nickname": "your nickname", + "twtxtfile": "twtxt.txt", + "maxlog": 100, + "spacing": " ", + "following": { + "user_1": "https://example.com/twtxt.txt", + "user_2": "https://elsewhere.com/tweets.txt" + } + } + +Possible entries are: + +* `nickname`: Your preferred nickname. Only used to filter mentions to other people. +* `twtxtfile`: The location of your `twtxt.txt` file. Defaults to `./twtxt.txt`. +* `maxlog`: The maximum number of entries shown when you view your timeline. Defaults to 100. +* `spacing`: A string value that contains the spacing between the user name and the text when viewing your timeline. Defaults to three spaces. +* `following`: A list of users you follow. Can be managed with the `follow` and `unfollow` commands. + +The current limit of the list of users you are following is at 4 KiB. You probably won't reach that limit any time soon. + +## TODO + +* I'd really like to have Unicode support in `twtxtc`. +* Mentions *could* be made more obvious, e.g. bold formatting or so. + +## Licenses + +`twtxtc` is licensed under the terms of the [WTFPL](http://wtfpl.net/txt/copying). It uses the lovely [`cJSON`](https://github.com/DaveGamble/cJSON/) library for certain functionalities, basically following the terms of the MIT license. Please read the particular `LICENSE` documents and/or the header files in case you are interested. diff --git a/cJSON/LICENSE b/cJSON/LICENSE new file mode 100644 index 0000000..b15182d --- /dev/null +++ b/cJSON/LICENSE @@ -0,0 +1,20 @@ + Copyright (c) 2009-2017 Dave Gamble and cJSON contributors + + Permission is hereby granted, free of charge, to any person obtaining a copy + of this software and associated documentation files (the "Software"), to deal + in the Software without restriction, including without limitation the rights + to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + copies of the Software, and to permit persons to whom the Software is + furnished to do so, subject to the following conditions: + + The above copyright notice and this permission notice shall be included in + all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + THE SOFTWARE. + diff --git a/cJSON/cJSON.c b/cJSON/cJSON.c new file mode 100644 index 0000000..306bb5b --- /dev/null +++ b/cJSON/cJSON.c @@ -0,0 +1,2699 @@ +/* + Copyright (c) 2009-2017 Dave Gamble and cJSON contributors + + Permission is hereby granted, free of charge, to any person obtaining a copy + of this software and associated documentation files (the "Software"), to deal + in the Software without restriction, including without limitation the rights + to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + copies of the Software, and to permit persons to whom the Software is + furnished to do so, subject to the following conditions: + + The above copyright notice and this permission notice shall be included in + all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + THE SOFTWARE. +*/ + +/* cJSON */ +/* JSON parser in C. */ + +#ifdef __GNUC__ +#pragma GCC visibility push(default) +#endif + +#include +#include +#include +#include +#include +#include +#include +#include + +#ifdef __GNUC__ +#pragma GCC visibility pop +#endif + +#include "cJSON.h" + +/* define our own boolean type */ +#define true ((cJSON_bool)1) +#define false ((cJSON_bool)0) + +typedef struct { + const unsigned char *json; + size_t position; +} error; +static error global_error = { NULL, 0 }; + +CJSON_PUBLIC(const char *) cJSON_GetErrorPtr(void) +{ + return (const char*) (global_error.json + global_error.position); +} + +/* This is a safeguard to prevent copy-pasters from using incompatible C and header files */ +#if (CJSON_VERSION_MAJOR != 1) || (CJSON_VERSION_MINOR != 5) || (CJSON_VERSION_PATCH != 9) + #error cJSON.h and cJSON.c have different versions. Make sure that both have the same. +#endif + +CJSON_PUBLIC(const char*) cJSON_Version(void) +{ + static char version[15]; + sprintf(version, "%i.%i.%i", CJSON_VERSION_MAJOR, CJSON_VERSION_MINOR, CJSON_VERSION_PATCH); + + return version; +} + +/* Case insensitive string comparison, doesn't consider two NULL pointers equal though */ +static int case_insensitive_strcmp(const unsigned char *string1, const unsigned char *string2) +{ + if ((string1 == NULL) || (string2 == NULL)) + { + return 1; + } + + if (string1 == string2) + { + return 0; + } + + for(; tolower(*string1) == tolower(*string2); (void)string1++, string2++) + { + if (*string1 == '\0') + { + return 0; + } + } + + return tolower(*string1) - tolower(*string2); +} + +typedef struct internal_hooks +{ + void *(*allocate)(size_t size); + void (*deallocate)(void *pointer); + void *(*reallocate)(void *pointer, size_t size); +} internal_hooks; + +static internal_hooks global_hooks = { malloc, free, realloc }; + +static unsigned char* cJSON_strdup(const unsigned char* string, const internal_hooks * const hooks) +{ + size_t length = 0; + unsigned char *copy = NULL; + + if (string == NULL) + { + return NULL; + } + + length = strlen((const char*)string) + sizeof(""); + if (!(copy = (unsigned char*)hooks->allocate(length))) + { + return NULL; + } + memcpy(copy, string, length); + + return copy; +} + +CJSON_PUBLIC(void) cJSON_InitHooks(cJSON_Hooks* hooks) +{ + if (hooks == NULL) + { + /* Reset hooks */ + global_hooks.allocate = malloc; + global_hooks.deallocate = free; + global_hooks.reallocate = realloc; + return; + } + + global_hooks.allocate = malloc; + if (hooks->malloc_fn != NULL) + { + global_hooks.allocate = hooks->malloc_fn; + } + + global_hooks.deallocate = free; + if (hooks->free_fn != NULL) + { + global_hooks.deallocate = hooks->free_fn; + } + + /* use realloc only if both free and malloc are used */ + global_hooks.reallocate = NULL; + if ((global_hooks.allocate == malloc) && (global_hooks.deallocate == free)) + { + global_hooks.reallocate = realloc; + } +} + +/* Internal constructor. */ +static cJSON *cJSON_New_Item(const internal_hooks * const hooks) +{ + cJSON* node = (cJSON*)hooks->allocate(sizeof(cJSON)); + if (node) + { + memset(node, '\0', sizeof(cJSON)); + } + + return node; +} + +/* Delete a cJSON structure. */ +CJSON_PUBLIC(void) cJSON_Delete(cJSON *item) +{ + cJSON *next = NULL; + while (item != NULL) + { + next = item->next; + if (!(item->type & cJSON_IsReference) && (item->child != NULL)) + { + cJSON_Delete(item->child); + } + if (!(item->type & cJSON_IsReference) && (item->valuestring != NULL)) + { + global_hooks.deallocate(item->valuestring); + } + if (!(item->type & cJSON_StringIsConst) && (item->string != NULL)) + { + global_hooks.deallocate(item->string); + } + global_hooks.deallocate(item); + item = next; + } +} + +/* get the decimal point character of the current locale */ +static unsigned char get_decimal_point(void) +{ + struct lconv *lconv = localeconv(); + return (unsigned char) lconv->decimal_point[0]; +} + +typedef struct +{ + const unsigned char *content; + size_t length; + size_t offset; + size_t depth; /* How deeply nested (in arrays/objects) is the input at the current offset. */ + internal_hooks hooks; +} parse_buffer; + +/* check if the given size is left to read in a given parse buffer (starting with 1) */ +#define can_read(buffer, size) ((buffer != NULL) && (((buffer)->offset + size) <= (buffer)->length)) +#define cannot_read(buffer, size) (!can_read(buffer, size)) +/* check if the buffer can be accessed at the given index (starting with 0) */ +#define can_access_at_index(buffer, index) ((buffer != NULL) && (((buffer)->offset + index) < (buffer)->length)) +#define cannot_access_at_index(buffer, index) (!can_access_at_index(buffer, index)) +/* get a pointer to the buffer at the position */ +#define buffer_at_offset(buffer) ((buffer)->content + (buffer)->offset) + +/* Parse the input text to generate a number, and populate the result into item. */ +static cJSON_bool parse_number(cJSON * const item, parse_buffer * const input_buffer) +{ + double number = 0; + unsigned char *after_end = NULL; + unsigned char number_c_string[64]; + unsigned char decimal_point = get_decimal_point(); + size_t i = 0; + + if ((input_buffer == NULL) || (input_buffer->content == NULL)) + { + return false; + } + + /* copy the number into a temporary buffer and replace '.' with the decimal point + * of the current locale (for strtod) + * This also takes care of '\0' not necessarily being available for marking the end of the input */ + for (i = 0; (i < (sizeof(number_c_string) - 1)) && can_access_at_index(input_buffer, i); i++) + { + switch (buffer_at_offset(input_buffer)[i]) + { + case '0': + case '1': + case '2': + case '3': + case '4': + case '5': + case '6': + case '7': + case '8': + case '9': + case '+': + case '-': + case 'e': + case 'E': + number_c_string[i] = buffer_at_offset(input_buffer)[i]; + break; + + case '.': + number_c_string[i] = decimal_point; + break; + + default: + goto loop_end; + } + } +loop_end: + number_c_string[i] = '\0'; + + number = strtod((const char*)number_c_string, (char**)&after_end); + if (number_c_string == after_end) + { + return false; /* parse_error */ + } + + item->valuedouble = number; + + /* use saturation in case of overflow */ + if (number >= INT_MAX) + { + item->valueint = INT_MAX; + } + else if (number <= INT_MIN) + { + item->valueint = INT_MIN; + } + else + { + item->valueint = (int)number; + } + + item->type = cJSON_Number; + + input_buffer->offset += (size_t)(after_end - number_c_string); + return true; +} + +/* don't ask me, but the original cJSON_SetNumberValue returns an integer or double */ +CJSON_PUBLIC(double) cJSON_SetNumberHelper(cJSON *object, double number) +{ + if (number >= INT_MAX) + { + object->valueint = INT_MAX; + } + else if (number <= INT_MIN) + { + object->valueint = INT_MIN; + } + else + { + object->valueint = (int)number; + } + + return object->valuedouble = number; +} + +typedef struct +{ + unsigned char *buffer; + size_t length; + size_t offset; + size_t depth; /* current nesting depth (for formatted printing) */ + cJSON_bool noalloc; + cJSON_bool format; /* is this print a formatted print */ + internal_hooks hooks; +} printbuffer; + +/* realloc printbuffer if necessary to have at least "needed" bytes more */ +static unsigned char* ensure(printbuffer * const p, size_t needed) +{ + unsigned char *newbuffer = NULL; + size_t newsize = 0; + + if ((p == NULL) || (p->buffer == NULL)) + { + return NULL; + } + + if ((p->length > 0) && (p->offset >= p->length)) + { + /* make sure that offset is valid */ + return NULL; + } + + if (needed > INT_MAX) + { + /* sizes bigger than INT_MAX are currently not supported */ + return NULL; + } + + needed += p->offset + 1; + if (needed <= p->length) + { + return p->buffer + p->offset; + } + + if (p->noalloc) { + return NULL; + } + + /* calculate new buffer size */ + if (needed > (INT_MAX / 2)) + { + /* overflow of int, use INT_MAX if possible */ + if (needed <= INT_MAX) + { + newsize = INT_MAX; + } + else + { + return NULL; + } + } + else + { + newsize = needed * 2; + } + + if (p->hooks.reallocate != NULL) + { + /* reallocate with realloc if available */ + newbuffer = (unsigned char*)p->hooks.reallocate(p->buffer, newsize); + if (newbuffer == NULL) + { + p->hooks.deallocate(p->buffer); + p->length = 0; + p->buffer = NULL; + + return NULL; + } + } + else + { + /* otherwise reallocate manually */ + newbuffer = (unsigned char*)p->hooks.allocate(newsize); + if (!newbuffer) + { + p->hooks.deallocate(p->buffer); + p->length = 0; + p->buffer = NULL; + + return NULL; + } + if (newbuffer) + { + memcpy(newbuffer, p->buffer, p->offset + 1); + } + p->hooks.deallocate(p->buffer); + } + p->length = newsize; + p->buffer = newbuffer; + + return newbuffer + p->offset; +} + +/* calculate the new length of the string in a printbuffer and update the offset */ +static void update_offset(printbuffer * const buffer) +{ + const unsigned char *buffer_pointer = NULL; + if ((buffer == NULL) || (buffer->buffer == NULL)) + { + return; + } + buffer_pointer = buffer->buffer + buffer->offset; + + buffer->offset += strlen((const char*)buffer_pointer); +} + +/* Render the number nicely from the given item into a string. */ +static cJSON_bool print_number(const cJSON * const item, printbuffer * const output_buffer) +{ + unsigned char *output_pointer = NULL; + double d = item->valuedouble; + int length = 0; + size_t i = 0; + unsigned char number_buffer[26]; /* temporary buffer to print the number into */ + unsigned char decimal_point = get_decimal_point(); + double test; + + if (output_buffer == NULL) + { + return false; + } + + /* This checks for NaN and Infinity */ + if ((d * 0) != 0) + { + length = sprintf((char*)number_buffer, "null"); + } + else + { + /* Try 15 decimal places of precision to avoid nonsignificant nonzero digits */ + length = sprintf((char*)number_buffer, "%1.15g", d); + + /* Check whether the original double can be recovered */ + if ((sscanf((char*)number_buffer, "%lg", &test) != 1) || ((double)test != d)) + { + /* If not, print with 17 decimal places of precision */ + length = sprintf((char*)number_buffer, "%1.17g", d); + } + } + + /* sprintf failed or buffer overrun occured */ + if ((length < 0) || (length > (int)(sizeof(number_buffer) - 1))) + { + return false; + } + + /* reserve appropriate space in the output */ + output_pointer = ensure(output_buffer, (size_t)length); + if (output_pointer == NULL) + { + return false; + } + + /* copy the printed number to the output and replace locale + * dependent decimal point with '.' */ + for (i = 0; i < ((size_t)length); i++) + { + if (number_buffer[i] == decimal_point) + { + output_pointer[i] = '.'; + continue; + } + + output_pointer[i] = number_buffer[i]; + } + output_pointer[i] = '\0'; + + output_buffer->offset += (size_t)length; + + return true; +} + +/* parse 4 digit hexadecimal number */ +static unsigned parse_hex4(const unsigned char * const input) +{ + unsigned int h = 0; + size_t i = 0; + + for (i = 0; i < 4; i++) + { + /* parse digit */ + if ((input[i] >= '0') && (input[i] <= '9')) + { + h += (unsigned int) input[i] - '0'; + } + else if ((input[i] >= 'A') && (input[i] <= 'F')) + { + h += (unsigned int) 10 + input[i] - 'A'; + } + else if ((input[i] >= 'a') && (input[i] <= 'f')) + { + h += (unsigned int) 10 + input[i] - 'a'; + } + else /* invalid */ + { + return 0; + } + + if (i < 3) + { + /* shift left to make place for the next nibble */ + h = h << 4; + } + } + + return h; +} + +/* converts a UTF-16 literal to UTF-8 + * A literal can be one or two sequences of the form \uXXXX */ +static unsigned char utf16_literal_to_utf8(const unsigned char * const input_pointer, const unsigned char * const input_end, unsigned char **output_pointer) +{ + long unsigned int codepoint = 0; + unsigned int first_code = 0; + const unsigned char *first_sequence = input_pointer; + unsigned char utf8_length = 0; + unsigned char utf8_position = 0; + unsigned char sequence_length = 0; + unsigned char first_byte_mark = 0; + + if ((input_end - first_sequence) < 6) + { + /* input ends unexpectedly */ + goto fail; + } + + /* get the first utf16 sequence */ + first_code = parse_hex4(first_sequence + 2); + + /* check that the code is valid */ + if (((first_code >= 0xDC00) && (first_code <= 0xDFFF))) + { + goto fail; + } + + /* UTF16 surrogate pair */ + if ((first_code >= 0xD800) && (first_code <= 0xDBFF)) + { + const unsigned char *second_sequence = first_sequence + 6; + unsigned int second_code = 0; + sequence_length = 12; /* \uXXXX\uXXXX */ + + if ((input_end - second_sequence) < 6) + { + /* input ends unexpectedly */ + goto fail; + } + + if ((second_sequence[0] != '\\') || (second_sequence[1] != 'u')) + { + /* missing second half of the surrogate pair */ + goto fail; + } + + /* get the second utf16 sequence */ + second_code = parse_hex4(second_sequence + 2); + /* check that the code is valid */ + if ((second_code < 0xDC00) || (second_code > 0xDFFF)) + { + /* invalid second half of the surrogate pair */ + goto fail; + } + + + /* calculate the unicode codepoint from the surrogate pair */ + codepoint = 0x10000 + (((first_code & 0x3FF) << 10) | (second_code & 0x3FF)); + } + else + { + sequence_length = 6; /* \uXXXX */ + codepoint = first_code; + } + + /* encode as UTF-8 + * takes at maximum 4 bytes to encode: + * 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx */ + if (codepoint < 0x80) + { + /* normal ascii, encoding 0xxxxxxx */ + utf8_length = 1; + } + else if (codepoint < 0x800) + { + /* two bytes, encoding 110xxxxx 10xxxxxx */ + utf8_length = 2; + first_byte_mark = 0xC0; /* 11000000 */ + } + else if (codepoint < 0x10000) + { + /* three bytes, encoding 1110xxxx 10xxxxxx 10xxxxxx */ + utf8_length = 3; + first_byte_mark = 0xE0; /* 11100000 */ + } + else if (codepoint <= 0x10FFFF) + { + /* four bytes, encoding 1110xxxx 10xxxxxx 10xxxxxx 10xxxxxx */ + utf8_length = 4; + first_byte_mark = 0xF0; /* 11110000 */ + } + else + { + /* invalid unicode codepoint */ + goto fail; + } + + /* encode as utf8 */ + for (utf8_position = (unsigned char)(utf8_length - 1); utf8_position > 0; utf8_position--) + { + /* 10xxxxxx */ + (*output_pointer)[utf8_position] = (unsigned char)((codepoint | 0x80) & 0xBF); + codepoint >>= 6; + } + /* encode first byte */ + if (utf8_length > 1) + { + (*output_pointer)[0] = (unsigned char)((codepoint | first_byte_mark) & 0xFF); + } + else + { + (*output_pointer)[0] = (unsigned char)(codepoint & 0x7F); + } + + *output_pointer += utf8_length; + + return sequence_length; + +fail: + return 0; +} + +/* Parse the input text into an unescaped cinput, and populate item. */ +static cJSON_bool parse_string(cJSON * const item, parse_buffer * const input_buffer) +{ + const unsigned char *input_pointer = buffer_at_offset(input_buffer) + 1; + const unsigned char *input_end = buffer_at_offset(input_buffer) + 1; + unsigned char *output_pointer = NULL; + unsigned char *output = NULL; + + /* not a string */ + if (buffer_at_offset(input_buffer)[0] != '\"') + { + goto fail; + } + + { + /* calculate approximate size of the output (overestimate) */ + size_t allocation_length = 0; + size_t skipped_bytes = 0; + while (((size_t)(input_end - input_buffer->content) < input_buffer->length) && (*input_end != '\"')) + { + /* is escape sequence */ + if (input_end[0] == '\\') + { + if ((size_t)(input_end + 1 - input_buffer->content) >= input_buffer->length) + { + /* prevent buffer overflow when last input character is a backslash */ + goto fail; + } + skipped_bytes++; + input_end++; + } + input_end++; + } + if (((size_t)(input_end - input_buffer->content) >= input_buffer->length) || (*input_end != '\"')) + { + goto fail; /* string ended unexpectedly */ + } + + /* This is at most how much we need for the output */ + allocation_length = (size_t) (input_end - buffer_at_offset(input_buffer)) - skipped_bytes; + output = (unsigned char*)input_buffer->hooks.allocate(allocation_length + sizeof("")); + if (output == NULL) + { + goto fail; /* allocation failure */ + } + } + + output_pointer = output; + /* loop through the string literal */ + while (input_pointer < input_end) + { + if (*input_pointer != '\\') + { + *output_pointer++ = *input_pointer++; + } + /* escape sequence */ + else + { + unsigned char sequence_length = 2; + if ((input_end - input_pointer) < 1) + { + goto fail; + } + + switch (input_pointer[1]) + { + case 'b': + *output_pointer++ = '\b'; + break; + case 'f': + *output_pointer++ = '\f'; + break; + case 'n': + *output_pointer++ = '\n'; + break; + case 'r': + *output_pointer++ = '\r'; + break; + case 't': + *output_pointer++ = '\t'; + break; + case '\"': + case '\\': + case '/': + *output_pointer++ = input_pointer[1]; + break; + + /* UTF-16 literal */ + case 'u': + sequence_length = utf16_literal_to_utf8(input_pointer, input_end, &output_pointer); + if (sequence_length == 0) + { + /* failed to convert UTF16-literal to UTF-8 */ + goto fail; + } + break; + + default: + goto fail; + } + input_pointer += sequence_length; + } + } + + /* zero terminate the output */ + *output_pointer = '\0'; + + item->type = cJSON_String; + item->valuestring = (char*)output; + + input_buffer->offset = (size_t) (input_end - input_buffer->content); + input_buffer->offset++; + + return true; + +fail: + if (output != NULL) + { + input_buffer->hooks.deallocate(output); + } + + if (input_pointer != NULL) + { + input_buffer->offset = (size_t)(input_pointer - input_buffer->content); + } + + return false; +} + +/* Render the cstring provided to an escaped version that can be printed. */ +static cJSON_bool print_string_ptr(const unsigned char * const input, printbuffer * const output_buffer) +{ + const unsigned char *input_pointer = NULL; + unsigned char *output = NULL; + unsigned char *output_pointer = NULL; + size_t output_length = 0; + /* numbers of additional characters needed for escaping */ + size_t escape_characters = 0; + + if (output_buffer == NULL) + { + return false; + } + + /* empty string */ + if (input == NULL) + { + output = ensure(output_buffer, sizeof("\"\"")); + if (output == NULL) + { + return false; + } + strcpy((char*)output, "\"\""); + + return true; + } + + /* set "flag" to 1 if something needs to be escaped */ + for (input_pointer = input; *input_pointer; input_pointer++) + { + switch (*input_pointer) + { + case '\"': + case '\\': + case '\b': + case '\f': + case '\n': + case '\r': + case '\t': + /* one character escape sequence */ + escape_characters++; + break; + default: + if (*input_pointer < 32) + { + /* UTF-16 escape sequence uXXXX */ + escape_characters += 5; + } + break; + } + } + output_length = (size_t)(input_pointer - input) + escape_characters; + + output = ensure(output_buffer, output_length + sizeof("\"\"")); + if (output == NULL) + { + return false; + } + + /* no characters have to be escaped */ + if (escape_characters == 0) + { + output[0] = '\"'; + memcpy(output + 1, input, output_length); + output[output_length + 1] = '\"'; + output[output_length + 2] = '\0'; + + return true; + } + + output[0] = '\"'; + output_pointer = output + 1; + /* copy the string */ + for (input_pointer = input; *input_pointer != '\0'; (void)input_pointer++, output_pointer++) + { + if ((*input_pointer > 31) && (*input_pointer != '\"') && (*input_pointer != '\\')) + { + /* normal character, copy */ + *output_pointer = *input_pointer; + } + else + { + /* character needs to be escaped */ + *output_pointer++ = '\\'; + switch (*input_pointer) + { + case '\\': + *output_pointer = '\\'; + break; + case '\"': + *output_pointer = '\"'; + break; + case '\b': + *output_pointer = 'b'; + break; + case '\f': + *output_pointer = 'f'; + break; + case '\n': + *output_pointer = 'n'; + break; + case '\r': + *output_pointer = 'r'; + break; + case '\t': + *output_pointer = 't'; + break; + default: + /* escape and print as unicode codepoint */ + sprintf((char*)output_pointer, "u%04x", *input_pointer); + output_pointer += 4; + break; + } + } + } + output[output_length + 1] = '\"'; + output[output_length + 2] = '\0'; + + return true; +} + +/* Invoke print_string_ptr (which is useful) on an item. */ +static cJSON_bool print_string(const cJSON * const item, printbuffer * const p) +{ + return print_string_ptr((unsigned char*)item->valuestring, p); +} + +/* Predeclare these prototypes. */ +static cJSON_bool parse_value(cJSON * const item, parse_buffer * const input_buffer); +static cJSON_bool print_value(const cJSON * const item, printbuffer * const output_buffer); +static cJSON_bool parse_array(cJSON * const item, parse_buffer * const input_buffer); +static cJSON_bool print_array(const cJSON * const item, printbuffer * const output_buffer); +static cJSON_bool parse_object(cJSON * const item, parse_buffer * const input_buffer); +static cJSON_bool print_object(const cJSON * const item, printbuffer * const output_buffer); + +/* Utility to jump whitespace and cr/lf */ +static parse_buffer *buffer_skip_whitespace(parse_buffer * const buffer) +{ + if ((buffer == NULL) || (buffer->content == NULL)) + { + return NULL; + } + + while (can_access_at_index(buffer, 0) && (buffer_at_offset(buffer)[0] <= 32)) + { + buffer->offset++; + } + + if (buffer->offset == buffer->length) + { + buffer->offset--; + } + + return buffer; +} + +/* Parse an object - create a new root, and populate. */ +CJSON_PUBLIC(cJSON *) cJSON_ParseWithOpts(const char *value, const char **return_parse_end, cJSON_bool require_null_terminated) +{ + parse_buffer buffer = { 0, 0, 0, 0, { 0, 0, 0 } }; + cJSON *item = NULL; + + /* reset error position */ + global_error.json = NULL; + global_error.position = 0; + + if (value == NULL) + { + goto fail; + } + + buffer.content = (const unsigned char*)value; + buffer.length = strlen((const char*)value) + sizeof(""); + buffer.offset = 0; + buffer.hooks = global_hooks; + + item = cJSON_New_Item(&global_hooks); + if (item == NULL) /* memory fail */ + { + goto fail; + } + + if (!parse_value(item, buffer_skip_whitespace(&buffer))) + { + /* parse failure. ep is set. */ + goto fail; + } + + /* if we require null-terminated JSON without appended garbage, skip and then check for a null terminator */ + if (require_null_terminated) + { + buffer_skip_whitespace(&buffer); + if ((buffer.offset >= buffer.length) || buffer_at_offset(&buffer)[0] != '\0') + { + goto fail; + } + } + if (return_parse_end) + { + *return_parse_end = (const char*)buffer_at_offset(&buffer); + } + + return item; + +fail: + if (item != NULL) + { + cJSON_Delete(item); + } + + if (value != NULL) + { + error local_error; + local_error.json = (const unsigned char*)value; + local_error.position = 0; + + if (buffer.offset < buffer.length) + { + local_error.position = buffer.offset; + } + else if (buffer.length > 0) + { + local_error.position = buffer.length - 1; + } + + if (return_parse_end != NULL) + { + *return_parse_end = (const char*)local_error.json + local_error.position; + } + + global_error = local_error; + } + + return NULL; +} + +/* Default options for cJSON_Parse */ +CJSON_PUBLIC(cJSON *) cJSON_Parse(const char *value) +{ + return cJSON_ParseWithOpts(value, 0, 0); +} + +#define cjson_min(a, b) ((a < b) ? a : b) + +static unsigned char *print(const cJSON * const item, cJSON_bool format, const internal_hooks * const hooks) +{ + printbuffer buffer[1]; + unsigned char *printed = NULL; + + memset(buffer, 0, sizeof(buffer)); + + /* create buffer */ + buffer->buffer = (unsigned char*) hooks->allocate(256); + buffer->format = format; + buffer->hooks = *hooks; + if (buffer->buffer == NULL) + { + goto fail; + } + + /* print the value */ + if (!print_value(item, buffer)) + { + goto fail; + } + update_offset(buffer); + + /* check if reallocate is available */ + if (hooks->reallocate != NULL) + { + printed = (unsigned char*) hooks->reallocate(buffer->buffer, buffer->length); + buffer->buffer = NULL; + if (printed == NULL) { + goto fail; + } + } + else /* otherwise copy the JSON over to a new buffer */ + { + printed = (unsigned char*) hooks->allocate(buffer->offset + 1); + if (printed == NULL) + { + goto fail; + } + memcpy(printed, buffer->buffer, cjson_min(buffer->length, buffer->offset + 1)); + printed[buffer->offset] = '\0'; /* just to be sure */ + + /* free the buffer */ + hooks->deallocate(buffer->buffer); + } + + return printed; + +fail: + if (buffer->buffer != NULL) + { + hooks->deallocate(buffer->buffer); + } + + if (printed != NULL) + { + hooks->deallocate(printed); + } + + return NULL; +} + +/* Render a cJSON item/entity/structure to text. */ +CJSON_PUBLIC(char *) cJSON_Print(const cJSON *item) +{ + return (char*)print(item, true, &global_hooks); +} + +CJSON_PUBLIC(char *) cJSON_PrintUnformatted(const cJSON *item) +{ + return (char*)print(item, false, &global_hooks); +} + +CJSON_PUBLIC(char *) cJSON_PrintBuffered(const cJSON *item, int prebuffer, cJSON_bool fmt) +{ + printbuffer p = { 0, 0, 0, 0, 0, 0, { 0, 0, 0 } }; + + if (prebuffer < 0) + { + return NULL; + } + + p.buffer = (unsigned char*)global_hooks.allocate((size_t)prebuffer); + if (!p.buffer) + { + return NULL; + } + + p.length = (size_t)prebuffer; + p.offset = 0; + p.noalloc = false; + p.format = fmt; + p.hooks = global_hooks; + + if (!print_value(item, &p)) + { + global_hooks.deallocate(p.buffer); + return NULL; + } + + return (char*)p.buffer; +} + +CJSON_PUBLIC(cJSON_bool) cJSON_PrintPreallocated(cJSON *item, char *buf, const int len, const cJSON_bool fmt) +{ + printbuffer p = { 0, 0, 0, 0, 0, 0, { 0, 0, 0 } }; + + if ((len < 0) || (buf == NULL)) + { + return false; + } + + p.buffer = (unsigned char*)buf; + p.length = (size_t)len; + p.offset = 0; + p.noalloc = true; + p.format = fmt; + p.hooks = global_hooks; + + return print_value(item, &p); +} + +/* Parser core - when encountering text, process appropriately. */ +static cJSON_bool parse_value(cJSON * const item, parse_buffer * const input_buffer) +{ + if ((input_buffer == NULL) || (input_buffer->content == NULL)) + { + return false; /* no input */ + } + + /* parse the different types of values */ + /* null */ + if (can_read(input_buffer, 4) && (strncmp((const char*)buffer_at_offset(input_buffer), "null", 4) == 0)) + { + item->type = cJSON_NULL; + input_buffer->offset += 4; + return true; + } + /* false */ + if (can_read(input_buffer, 5) && (strncmp((const char*)buffer_at_offset(input_buffer), "false", 5) == 0)) + { + item->type = cJSON_False; + input_buffer->offset += 5; + return true; + } + /* true */ + if (can_read(input_buffer, 4) && (strncmp((const char*)buffer_at_offset(input_buffer), "true", 4) == 0)) + { + item->type = cJSON_True; + item->valueint = 1; + input_buffer->offset += 4; + return true; + } + /* string */ + if (can_access_at_index(input_buffer, 0) && (buffer_at_offset(input_buffer)[0] == '\"')) + { + return parse_string(item, input_buffer); + } + /* number */ + if (can_access_at_index(input_buffer, 0) && ((buffer_at_offset(input_buffer)[0] == '-') || ((buffer_at_offset(input_buffer)[0] >= '0') && (buffer_at_offset(input_buffer)[0] <= '9')))) + { + return parse_number(item, input_buffer); + } + /* array */ + if (can_access_at_index(input_buffer, 0) && (buffer_at_offset(input_buffer)[0] == '[')) + { + return parse_array(item, input_buffer); + } + /* object */ + if (can_access_at_index(input_buffer, 0) && (buffer_at_offset(input_buffer)[0] == '{')) + { + return parse_object(item, input_buffer); + } + + + return false; +} + +/* Render a value to text. */ +static cJSON_bool print_value(const cJSON * const item, printbuffer * const output_buffer) +{ + unsigned char *output = NULL; + + if ((item == NULL) || (output_buffer == NULL)) + { + return false; + } + + switch ((item->type) & 0xFF) + { + case cJSON_NULL: + output = ensure(output_buffer, 5); + if (output == NULL) + { + return false; + } + strcpy((char*)output, "null"); + return true; + + case cJSON_False: + output = ensure(output_buffer, 6); + if (output == NULL) + { + return false; + } + strcpy((char*)output, "false"); + return true; + + case cJSON_True: + output = ensure(output_buffer, 5); + if (output == NULL) + { + return false; + } + strcpy((char*)output, "true"); + return true; + + case cJSON_Number: + return print_number(item, output_buffer); + + case cJSON_Raw: + { + size_t raw_length = 0; + if (item->valuestring == NULL) + { + if (!output_buffer->noalloc) + { + output_buffer->hooks.deallocate(output_buffer->buffer); + } + return false; + } + + raw_length = strlen(item->valuestring) + sizeof(""); + output = ensure(output_buffer, raw_length); + if (output == NULL) + { + return false; + } + memcpy(output, item->valuestring, raw_length); + return true; + } + + case cJSON_String: + return print_string(item, output_buffer); + + case cJSON_Array: + return print_array(item, output_buffer); + + case cJSON_Object: + return print_object(item, output_buffer); + + default: + return false; + } +} + +/* Build an array from input text. */ +static cJSON_bool parse_array(cJSON * const item, parse_buffer * const input_buffer) +{ + cJSON *head = NULL; /* head of the linked list */ + cJSON *current_item = NULL; + + if (input_buffer->depth >= CJSON_NESTING_LIMIT) + { + return false; /* to deeply nested */ + } + input_buffer->depth++; + + if (buffer_at_offset(input_buffer)[0] != '[') + { + /* not an array */ + goto fail; + } + + input_buffer->offset++; + buffer_skip_whitespace(input_buffer); + if (can_access_at_index(input_buffer, 0) && (buffer_at_offset(input_buffer)[0] == ']')) + { + /* empty array */ + goto success; + } + + /* check if we skipped to the end of the buffer */ + if (cannot_access_at_index(input_buffer, 0)) + { + input_buffer->offset--; + goto fail; + } + + /* step back to character in front of the first element */ + input_buffer->offset--; + /* loop through the comma separated array elements */ + do + { + /* allocate next item */ + cJSON *new_item = cJSON_New_Item(&(input_buffer->hooks)); + if (new_item == NULL) + { + goto fail; /* allocation failure */ + } + + /* attach next item to list */ + if (head == NULL) + { + /* start the linked list */ + current_item = head = new_item; + } + else + { + /* add to the end and advance */ + current_item->next = new_item; + new_item->prev = current_item; + current_item = new_item; + } + + /* parse next value */ + input_buffer->offset++; + buffer_skip_whitespace(input_buffer); + if (!parse_value(current_item, input_buffer)) + { + goto fail; /* failed to parse value */ + } + buffer_skip_whitespace(input_buffer); + } + while (can_access_at_index(input_buffer, 0) && (buffer_at_offset(input_buffer)[0] == ',')); + + if (cannot_access_at_index(input_buffer, 0) || buffer_at_offset(input_buffer)[0] != ']') + { + goto fail; /* expected end of array */ + } + +success: + input_buffer->depth--; + + item->type = cJSON_Array; + item->child = head; + + input_buffer->offset++; + + return true; + +fail: + if (head != NULL) + { + cJSON_Delete(head); + } + + return false; +} + +/* Render an array to text */ +static cJSON_bool print_array(const cJSON * const item, printbuffer * const output_buffer) +{ + unsigned char *output_pointer = NULL; + size_t length = 0; + cJSON *current_element = item->child; + + if (output_buffer == NULL) + { + return false; + } + + /* Compose the output array. */ + /* opening square bracket */ + output_pointer = ensure(output_buffer, 1); + if (output_pointer == NULL) + { + return false; + } + + *output_pointer = '['; + output_buffer->offset++; + output_buffer->depth++; + + while (current_element != NULL) + { + if (!print_value(current_element, output_buffer)) + { + return false; + } + update_offset(output_buffer); + if (current_element->next) + { + length = (size_t) (output_buffer->format ? 2 : 1); + output_pointer = ensure(output_buffer, length + 1); + if (output_pointer == NULL) + { + return false; + } + *output_pointer++ = ','; + if(output_buffer->format) + { + *output_pointer++ = ' '; + } + *output_pointer = '\0'; + output_buffer->offset += length; + } + current_element = current_element->next; + } + + output_pointer = ensure(output_buffer, 2); + if (output_pointer == NULL) + { + return false; + } + *output_pointer++ = ']'; + *output_pointer = '\0'; + output_buffer->depth--; + + return true; +} + +/* Build an object from the text. */ +static cJSON_bool parse_object(cJSON * const item, parse_buffer * const input_buffer) +{ + cJSON *head = NULL; /* linked list head */ + cJSON *current_item = NULL; + + if (input_buffer->depth >= CJSON_NESTING_LIMIT) + { + return false; /* to deeply nested */ + } + input_buffer->depth++; + + if (cannot_access_at_index(input_buffer, 0) || (buffer_at_offset(input_buffer)[0] != '{')) + { + goto fail; /* not an object */ + } + + input_buffer->offset++; + buffer_skip_whitespace(input_buffer); + if (can_access_at_index(input_buffer, 0) && (buffer_at_offset(input_buffer)[0] == '}')) + { + goto success; /* empty object */ + } + + /* check if we skipped to the end of the buffer */ + if (cannot_access_at_index(input_buffer, 0)) + { + input_buffer->offset--; + goto fail; + } + + /* step back to character in front of the first element */ + input_buffer->offset--; + /* loop through the comma separated array elements */ + do + { + /* allocate next item */ + cJSON *new_item = cJSON_New_Item(&(input_buffer->hooks)); + if (new_item == NULL) + { + goto fail; /* allocation failure */ + } + + /* attach next item to list */ + if (head == NULL) + { + /* start the linked list */ + current_item = head = new_item; + } + else + { + /* add to the end and advance */ + current_item->next = new_item; + new_item->prev = current_item; + current_item = new_item; + } + + /* parse the name of the child */ + input_buffer->offset++; + buffer_skip_whitespace(input_buffer); + if (!parse_string(current_item, input_buffer)) + { + goto fail; /* faile to parse name */ + } + buffer_skip_whitespace(input_buffer); + + /* swap valuestring and string, because we parsed the name */ + current_item->string = current_item->valuestring; + current_item->valuestring = NULL; + + if (cannot_access_at_index(input_buffer, 0) || (buffer_at_offset(input_buffer)[0] != ':')) + { + goto fail; /* invalid object */ + } + + /* parse the value */ + input_buffer->offset++; + buffer_skip_whitespace(input_buffer); + if (!parse_value(current_item, input_buffer)) + { + goto fail; /* failed to parse value */ + } + buffer_skip_whitespace(input_buffer); + } + while (can_access_at_index(input_buffer, 0) && (buffer_at_offset(input_buffer)[0] == ',')); + + if (cannot_access_at_index(input_buffer, 0) || (buffer_at_offset(input_buffer)[0] != '}')) + { + goto fail; /* expected end of object */ + } + +success: + input_buffer->depth--; + + item->type = cJSON_Object; + item->child = head; + + input_buffer->offset++; + return true; + +fail: + if (head != NULL) + { + cJSON_Delete(head); + } + + return false; +} + +/* Render an object to text. */ +static cJSON_bool print_object(const cJSON * const item, printbuffer * const output_buffer) +{ + unsigned char *output_pointer = NULL; + size_t length = 0; + cJSON *current_item = item->child; + + if (output_buffer == NULL) + { + return false; + } + + /* Compose the output: */ + length = (size_t) (output_buffer->format ? 2 : 1); /* fmt: {\n */ + output_pointer = ensure(output_buffer, length + 1); + if (output_pointer == NULL) + { + return false; + } + + *output_pointer++ = '{'; + output_buffer->depth++; + if (output_buffer->format) + { + *output_pointer++ = '\n'; + } + output_buffer->offset += length; + + while (current_item) + { + if (output_buffer->format) + { + size_t i; + output_pointer = ensure(output_buffer, output_buffer->depth); + if (output_pointer == NULL) + { + return false; + } + for (i = 0; i < output_buffer->depth; i++) + { + *output_pointer++ = '\t'; + } + output_buffer->offset += output_buffer->depth; + } + + /* print key */ + if (!print_string_ptr((unsigned char*)current_item->string, output_buffer)) + { + return false; + } + update_offset(output_buffer); + + length = (size_t) (output_buffer->format ? 2 : 1); + output_pointer = ensure(output_buffer, length); + if (output_pointer == NULL) + { + return false; + } + *output_pointer++ = ':'; + if (output_buffer->format) + { + *output_pointer++ = '\t'; + } + output_buffer->offset += length; + + /* print value */ + if (!print_value(current_item, output_buffer)) + { + return false; + } + update_offset(output_buffer); + + /* print comma if not last */ + length = (size_t) ((output_buffer->format ? 1 : 0) + (current_item->next ? 1 : 0)); + output_pointer = ensure(output_buffer, length + 1); + if (output_pointer == NULL) + { + return false; + } + if (current_item->next) + { + *output_pointer++ = ','; + } + + if (output_buffer->format) + { + *output_pointer++ = '\n'; + } + *output_pointer = '\0'; + output_buffer->offset += length; + + current_item = current_item->next; + } + + output_pointer = ensure(output_buffer, output_buffer->format ? (output_buffer->depth + 1) : 2); + if (output_pointer == NULL) + { + return false; + } + if (output_buffer->format) + { + size_t i; + for (i = 0; i < (output_buffer->depth - 1); i++) + { + *output_pointer++ = '\t'; + } + } + *output_pointer++ = '}'; + *output_pointer = '\0'; + output_buffer->depth--; + + return true; +} + +/* Get Array size/item / object item. */ +CJSON_PUBLIC(int) cJSON_GetArraySize(const cJSON *array) +{ + cJSON *child = NULL; + size_t size = 0; + + if (array == NULL) + { + return 0; + } + + child = array->child; + + while(child != NULL) + { + size++; + child = child->next; + } + + /* FIXME: Can overflow here. Cannot be fixed without breaking the API */ + + return (int)size; +} + +static cJSON* get_array_item(const cJSON *array, size_t index) +{ + cJSON *current_child = NULL; + + if (array == NULL) + { + return NULL; + } + + current_child = array->child; + while ((current_child != NULL) && (index > 0)) + { + index--; + current_child = current_child->next; + } + + return current_child; +} + +CJSON_PUBLIC(cJSON *) cJSON_GetArrayItem(const cJSON *array, int index) +{ + if (index < 0) + { + return NULL; + } + + return get_array_item(array, (size_t)index); +} + +static cJSON *get_object_item(const cJSON * const object, const char * const name, const cJSON_bool case_sensitive) +{ + cJSON *current_element = NULL; + + if ((object == NULL) || (name == NULL)) + { + return NULL; + } + + current_element = object->child; + if (case_sensitive) + { + while ((current_element != NULL) && (strcmp(name, current_element->string) != 0)) + { + current_element = current_element->next; + } + } + else + { + while ((current_element != NULL) && (case_insensitive_strcmp((const unsigned char*)name, (const unsigned char*)(current_element->string)) != 0)) + { + current_element = current_element->next; + } + } + + return current_element; +} + +CJSON_PUBLIC(cJSON *) cJSON_GetObjectItem(const cJSON * const object, const char * const string) +{ + return get_object_item(object, string, false); +} + +CJSON_PUBLIC(cJSON *) cJSON_GetObjectItemCaseSensitive(const cJSON * const object, const char * const string) +{ + return get_object_item(object, string, true); +} + +CJSON_PUBLIC(cJSON_bool) cJSON_HasObjectItem(const cJSON *object, const char *string) +{ + return cJSON_GetObjectItem(object, string) ? 1 : 0; +} + +/* Utility for array list handling. */ +static void suffix_object(cJSON *prev, cJSON *item) +{ + prev->next = item; + item->prev = prev; +} + +/* Utility for handling references. */ +static cJSON *create_reference(const cJSON *item, const internal_hooks * const hooks) +{ + cJSON *reference = NULL; + if (item == NULL) + { + return NULL; + } + + reference = cJSON_New_Item(hooks); + if (reference == NULL) + { + return NULL; + } + + memcpy(reference, item, sizeof(cJSON)); + reference->string = NULL; + reference->type |= cJSON_IsReference; + reference->next = reference->prev = NULL; + return reference; +} + +/* Add item to array/object. */ +CJSON_PUBLIC(void) cJSON_AddItemToArray(cJSON *array, cJSON *item) +{ + cJSON *child = NULL; + + if ((item == NULL) || (array == NULL)) + { + return; + } + + child = array->child; + + if (child == NULL) + { + /* list is empty, start new one */ + array->child = item; + } + else + { + /* append to the end */ + while (child->next) + { + child = child->next; + } + suffix_object(child, item); + } +} + +CJSON_PUBLIC(void) cJSON_AddItemToObject(cJSON *object, const char *string, cJSON *item) +{ + if (item == NULL) + { + return; + } + + /* call cJSON_AddItemToObjectCS for code reuse */ + cJSON_AddItemToObjectCS(object, (char*)cJSON_strdup((const unsigned char*)string, &global_hooks), item); + /* remove cJSON_StringIsConst flag */ + item->type &= ~cJSON_StringIsConst; +} + +#if defined (__clang__) || ((__GNUC__) && ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ > 5)))) + #pragma GCC diagnostic push +#endif +#ifdef __GNUC__ +#pragma GCC diagnostic ignored "-Wcast-qual" +#endif + +/* Add an item to an object with constant string as key */ +CJSON_PUBLIC(void) cJSON_AddItemToObjectCS(cJSON *object, const char *string, cJSON *item) +{ + if ((item == NULL) || (string == NULL)) + { + return; + } + if (!(item->type & cJSON_StringIsConst) && item->string) + { + global_hooks.deallocate(item->string); + } + item->string = (char*)string; + item->type |= cJSON_StringIsConst; + cJSON_AddItemToArray(object, item); +} +#if defined (__clang__) || ((__GNUC__) && ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ > 5)))) + #pragma GCC diagnostic pop +#endif + +CJSON_PUBLIC(void) cJSON_AddItemReferenceToArray(cJSON *array, cJSON *item) +{ + if (array == NULL) + { + return; + } + + cJSON_AddItemToArray(array, create_reference(item, &global_hooks)); +} + +CJSON_PUBLIC(void) cJSON_AddItemReferenceToObject(cJSON *object, const char *string, cJSON *item) +{ + if ((object == NULL) || (string == NULL)) + { + return; + } + + cJSON_AddItemToObject(object, string, create_reference(item, &global_hooks)); +} + +CJSON_PUBLIC(cJSON *) cJSON_DetachItemViaPointer(cJSON *parent, cJSON * const item) +{ + if ((parent == NULL) || (item == NULL)) + { + return NULL; + } + + if (item->prev != NULL) + { + /* not the first element */ + item->prev->next = item->next; + } + if (item->next != NULL) + { + /* not the last element */ + item->next->prev = item->prev; + } + + if (item == parent->child) + { + /* first element */ + parent->child = item->next; + } + /* make sure the detached item doesn't point anywhere anymore */ + item->prev = NULL; + item->next = NULL; + + return item; +} + +CJSON_PUBLIC(cJSON *) cJSON_DetachItemFromArray(cJSON *array, int which) +{ + if (which < 0) + { + return NULL; + } + + return cJSON_DetachItemViaPointer(array, get_array_item(array, (size_t)which)); +} + +CJSON_PUBLIC(void) cJSON_DeleteItemFromArray(cJSON *array, int which) +{ + cJSON_Delete(cJSON_DetachItemFromArray(array, which)); +} + +CJSON_PUBLIC(cJSON *) cJSON_DetachItemFromObject(cJSON *object, const char *string) +{ + cJSON *to_detach = cJSON_GetObjectItem(object, string); + + return cJSON_DetachItemViaPointer(object, to_detach); +} + +CJSON_PUBLIC(cJSON *) cJSON_DetachItemFromObjectCaseSensitive(cJSON *object, const char *string) +{ + cJSON *to_detach = cJSON_GetObjectItemCaseSensitive(object, string); + + return cJSON_DetachItemViaPointer(object, to_detach); +} + +CJSON_PUBLIC(void) cJSON_DeleteItemFromObject(cJSON *object, const char *string) +{ + cJSON_Delete(cJSON_DetachItemFromObject(object, string)); +} + +CJSON_PUBLIC(void) cJSON_DeleteItemFromObjectCaseSensitive(cJSON *object, const char *string) +{ + cJSON_Delete(cJSON_DetachItemFromObjectCaseSensitive(object, string)); +} + +/* Replace array/object items with new ones. */ +CJSON_PUBLIC(void) cJSON_InsertItemInArray(cJSON *array, int which, cJSON *newitem) +{ + cJSON *after_inserted = NULL; + + if (which < 0) + { + return; + } + + after_inserted = get_array_item(array, (size_t)which); + if (after_inserted == NULL) + { + cJSON_AddItemToArray(array, newitem); + return; + } + + newitem->next = after_inserted; + newitem->prev = after_inserted->prev; + after_inserted->prev = newitem; + if (after_inserted == array->child) + { + array->child = newitem; + } + else + { + newitem->prev->next = newitem; + } +} + +CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemViaPointer(cJSON * const parent, cJSON * const item, cJSON * replacement) +{ + if ((parent == NULL) || (replacement == NULL) || (item == NULL)) + { + return false; + } + + if (replacement == item) + { + return true; + } + + replacement->next = item->next; + replacement->prev = item->prev; + + if (replacement->next != NULL) + { + replacement->next->prev = replacement; + } + if (replacement->prev != NULL) + { + replacement->prev->next = replacement; + } + if (parent->child == item) + { + parent->child = replacement; + } + + item->next = NULL; + item->prev = NULL; + cJSON_Delete(item); + + return true; +} + +CJSON_PUBLIC(void) cJSON_ReplaceItemInArray(cJSON *array, int which, cJSON *newitem) +{ + if (which < 0) + { + return; + } + + cJSON_ReplaceItemViaPointer(array, get_array_item(array, (size_t)which), newitem); +} + +static cJSON_bool replace_item_in_object(cJSON *object, const char *string, cJSON *replacement, cJSON_bool case_sensitive) +{ + if ((replacement == NULL) || (string == NULL)) + { + return false; + } + + /* replace the name in the replacement */ + if (!(replacement->type & cJSON_StringIsConst) && (replacement->string != NULL)) + { + cJSON_free(replacement->string); + } + replacement->string = (char*)cJSON_strdup((const unsigned char*)string, &global_hooks); + replacement->type &= ~cJSON_StringIsConst; + + cJSON_ReplaceItemViaPointer(object, get_object_item(object, string, case_sensitive), replacement); + + return true; +} + +CJSON_PUBLIC(void) cJSON_ReplaceItemInObject(cJSON *object, const char *string, cJSON *newitem) +{ + replace_item_in_object(object, string, newitem, false); +} + +CJSON_PUBLIC(void) cJSON_ReplaceItemInObjectCaseSensitive(cJSON *object, const char *string, cJSON *newitem) +{ + replace_item_in_object(object, string, newitem, true); +} + +/* Create basic types: */ +CJSON_PUBLIC(cJSON *) cJSON_CreateNull(void) +{ + cJSON *item = cJSON_New_Item(&global_hooks); + if(item) + { + item->type = cJSON_NULL; + } + + return item; +} + +CJSON_PUBLIC(cJSON *) cJSON_CreateTrue(void) +{ + cJSON *item = cJSON_New_Item(&global_hooks); + if(item) + { + item->type = cJSON_True; + } + + return item; +} + +CJSON_PUBLIC(cJSON *) cJSON_CreateFalse(void) +{ + cJSON *item = cJSON_New_Item(&global_hooks); + if(item) + { + item->type = cJSON_False; + } + + return item; +} + +CJSON_PUBLIC(cJSON *) cJSON_CreateBool(cJSON_bool b) +{ + cJSON *item = cJSON_New_Item(&global_hooks); + if(item) + { + item->type = b ? cJSON_True : cJSON_False; + } + + return item; +} + +CJSON_PUBLIC(cJSON *) cJSON_CreateNumber(double num) +{ + cJSON *item = cJSON_New_Item(&global_hooks); + if(item) + { + item->type = cJSON_Number; + item->valuedouble = num; + + /* use saturation in case of overflow */ + if (num >= INT_MAX) + { + item->valueint = INT_MAX; + } + else if (num <= INT_MIN) + { + item->valueint = INT_MIN; + } + else + { + item->valueint = (int)num; + } + } + + return item; +} + +CJSON_PUBLIC(cJSON *) cJSON_CreateString(const char *string) +{ + cJSON *item = cJSON_New_Item(&global_hooks); + if(item) + { + item->type = cJSON_String; + item->valuestring = (char*)cJSON_strdup((const unsigned char*)string, &global_hooks); + if(!item->valuestring) + { + cJSON_Delete(item); + return NULL; + } + } + + return item; +} + +CJSON_PUBLIC(cJSON *) cJSON_CreateRaw(const char *raw) +{ + cJSON *item = cJSON_New_Item(&global_hooks); + if(item) + { + item->type = cJSON_Raw; + item->valuestring = (char*)cJSON_strdup((const unsigned char*)raw, &global_hooks); + if(!item->valuestring) + { + cJSON_Delete(item); + return NULL; + } + } + + return item; +} + +CJSON_PUBLIC(cJSON *) cJSON_CreateArray(void) +{ + cJSON *item = cJSON_New_Item(&global_hooks); + if(item) + { + item->type=cJSON_Array; + } + + return item; +} + +CJSON_PUBLIC(cJSON *) cJSON_CreateObject(void) +{ + cJSON *item = cJSON_New_Item(&global_hooks); + if (item) + { + item->type = cJSON_Object; + } + + return item; +} + +/* Create Arrays: */ +CJSON_PUBLIC(cJSON *) cJSON_CreateIntArray(const int *numbers, int count) +{ + size_t i = 0; + cJSON *n = NULL; + cJSON *p = NULL; + cJSON *a = NULL; + + if ((count < 0) || (numbers == NULL)) + { + return NULL; + } + + a = cJSON_CreateArray(); + for(i = 0; a && (i < (size_t)count); i++) + { + n = cJSON_CreateNumber(numbers[i]); + if (!n) + { + cJSON_Delete(a); + return NULL; + } + if(!i) + { + a->child = n; + } + else + { + suffix_object(p, n); + } + p = n; + } + + return a; +} + +CJSON_PUBLIC(cJSON *) cJSON_CreateFloatArray(const float *numbers, int count) +{ + size_t i = 0; + cJSON *n = NULL; + cJSON *p = NULL; + cJSON *a = NULL; + + if ((count < 0) || (numbers == NULL)) + { + return NULL; + } + + a = cJSON_CreateArray(); + + for(i = 0; a && (i < (size_t)count); i++) + { + n = cJSON_CreateNumber((double)numbers[i]); + if(!n) + { + cJSON_Delete(a); + return NULL; + } + if(!i) + { + a->child = n; + } + else + { + suffix_object(p, n); + } + p = n; + } + + return a; +} + +CJSON_PUBLIC(cJSON *) cJSON_CreateDoubleArray(const double *numbers, int count) +{ + size_t i = 0; + cJSON *n = NULL; + cJSON *p = NULL; + cJSON *a = NULL; + + if ((count < 0) || (numbers == NULL)) + { + return NULL; + } + + a = cJSON_CreateArray(); + + for(i = 0;a && (i < (size_t)count); i++) + { + n = cJSON_CreateNumber(numbers[i]); + if(!n) + { + cJSON_Delete(a); + return NULL; + } + if(!i) + { + a->child = n; + } + else + { + suffix_object(p, n); + } + p = n; + } + + return a; +} + +CJSON_PUBLIC(cJSON *) cJSON_CreateStringArray(const char **strings, int count) +{ + size_t i = 0; + cJSON *n = NULL; + cJSON *p = NULL; + cJSON *a = NULL; + + if ((count < 0) || (strings == NULL)) + { + return NULL; + } + + a = cJSON_CreateArray(); + + for (i = 0; a && (i < (size_t)count); i++) + { + n = cJSON_CreateString(strings[i]); + if(!n) + { + cJSON_Delete(a); + return NULL; + } + if(!i) + { + a->child = n; + } + else + { + suffix_object(p,n); + } + p = n; + } + + return a; +} + +/* Duplication */ +CJSON_PUBLIC(cJSON *) cJSON_Duplicate(const cJSON *item, cJSON_bool recurse) +{ + cJSON *newitem = NULL; + cJSON *child = NULL; + cJSON *next = NULL; + cJSON *newchild = NULL; + + /* Bail on bad ptr */ + if (!item) + { + goto fail; + } + /* Create new item */ + newitem = cJSON_New_Item(&global_hooks); + if (!newitem) + { + goto fail; + } + /* Copy over all vars */ + newitem->type = item->type & (~cJSON_IsReference); + newitem->valueint = item->valueint; + newitem->valuedouble = item->valuedouble; + if (item->valuestring) + { + newitem->valuestring = (char*)cJSON_strdup((unsigned char*)item->valuestring, &global_hooks); + if (!newitem->valuestring) + { + goto fail; + } + } + if (item->string) + { + newitem->string = (item->type&cJSON_StringIsConst) ? item->string : (char*)cJSON_strdup((unsigned char*)item->string, &global_hooks); + if (!newitem->string) + { + goto fail; + } + } + /* If non-recursive, then we're done! */ + if (!recurse) + { + return newitem; + } + /* Walk the ->next chain for the child. */ + child = item->child; + while (child != NULL) + { + newchild = cJSON_Duplicate(child, true); /* Duplicate (with recurse) each item in the ->next chain */ + if (!newchild) + { + goto fail; + } + if (next != NULL) + { + /* If newitem->child already set, then crosswire ->prev and ->next and move on */ + next->next = newchild; + newchild->prev = next; + next = newchild; + } + else + { + /* Set newitem->child and move to it */ + newitem->child = newchild; + next = newchild; + } + child = child->next; + } + + return newitem; + +fail: + if (newitem != NULL) + { + cJSON_Delete(newitem); + } + + return NULL; +} + +CJSON_PUBLIC(void) cJSON_Minify(char *json) +{ + unsigned char *into = (unsigned char*)json; + + if (json == NULL) + { + return; + } + + while (*json) + { + if (*json == ' ') + { + json++; + } + else if (*json == '\t') + { + /* Whitespace characters. */ + json++; + } + else if (*json == '\r') + { + json++; + } + else if (*json=='\n') + { + json++; + } + else if ((*json == '/') && (json[1] == '/')) + { + /* double-slash comments, to end of line. */ + while (*json && (*json != '\n')) + { + json++; + } + } + else if ((*json == '/') && (json[1] == '*')) + { + /* multiline comments. */ + while (*json && !((*json == '*') && (json[1] == '/'))) + { + json++; + } + json += 2; + } + else if (*json == '\"') + { + /* string literals, which are \" sensitive. */ + *into++ = (unsigned char)*json++; + while (*json && (*json != '\"')) + { + if (*json == '\\') + { + *into++ = (unsigned char)*json++; + } + *into++ = (unsigned char)*json++; + } + *into++ = (unsigned char)*json++; + } + else + { + /* All other characters. */ + *into++ = (unsigned char)*json++; + } + } + + /* and null-terminate. */ + *into = '\0'; +} + +CJSON_PUBLIC(cJSON_bool) cJSON_IsInvalid(const cJSON * const item) +{ + if (item == NULL) + { + return false; + } + + return (item->type & 0xFF) == cJSON_Invalid; +} + +CJSON_PUBLIC(cJSON_bool) cJSON_IsFalse(const cJSON * const item) +{ + if (item == NULL) + { + return false; + } + + return (item->type & 0xFF) == cJSON_False; +} + +CJSON_PUBLIC(cJSON_bool) cJSON_IsTrue(const cJSON * const item) +{ + if (item == NULL) + { + return false; + } + + return (item->type & 0xff) == cJSON_True; +} + + +CJSON_PUBLIC(cJSON_bool) cJSON_IsBool(const cJSON * const item) +{ + if (item == NULL) + { + return false; + } + + return (item->type & (cJSON_True | cJSON_False)) != 0; +} +CJSON_PUBLIC(cJSON_bool) cJSON_IsNull(const cJSON * const item) +{ + if (item == NULL) + { + return false; + } + + return (item->type & 0xFF) == cJSON_NULL; +} + +CJSON_PUBLIC(cJSON_bool) cJSON_IsNumber(const cJSON * const item) +{ + if (item == NULL) + { + return false; + } + + return (item->type & 0xFF) == cJSON_Number; +} + +CJSON_PUBLIC(cJSON_bool) cJSON_IsString(const cJSON * const item) +{ + if (item == NULL) + { + return false; + } + + return (item->type & 0xFF) == cJSON_String; +} + +CJSON_PUBLIC(cJSON_bool) cJSON_IsArray(const cJSON * const item) +{ + if (item == NULL) + { + return false; + } + + return (item->type & 0xFF) == cJSON_Array; +} + +CJSON_PUBLIC(cJSON_bool) cJSON_IsObject(const cJSON * const item) +{ + if (item == NULL) + { + return false; + } + + return (item->type & 0xFF) == cJSON_Object; +} + +CJSON_PUBLIC(cJSON_bool) cJSON_IsRaw(const cJSON * const item) +{ + if (item == NULL) + { + return false; + } + + return (item->type & 0xFF) == cJSON_Raw; +} + +CJSON_PUBLIC(cJSON_bool) cJSON_Compare(const cJSON * const a, const cJSON * const b, const cJSON_bool case_sensitive) +{ + if ((a == NULL) || (b == NULL) || ((a->type & 0xFF) != (b->type & 0xFF)) || cJSON_IsInvalid(a)) + { + return false; + } + + /* check if type is valid */ + switch (a->type & 0xFF) + { + case cJSON_False: + case cJSON_True: + case cJSON_NULL: + case cJSON_Number: + case cJSON_String: + case cJSON_Raw: + case cJSON_Array: + case cJSON_Object: + break; + + default: + return false; + } + + /* identical objects are equal */ + if (a == b) + { + return true; + } + + switch (a->type & 0xFF) + { + /* in these cases and equal type is enough */ + case cJSON_False: + case cJSON_True: + case cJSON_NULL: + return true; + + case cJSON_Number: + if (a->valuedouble == b->valuedouble) + { + return true; + } + return false; + + case cJSON_String: + case cJSON_Raw: + if ((a->valuestring == NULL) || (b->valuestring == NULL)) + { + return false; + } + if (strcmp(a->valuestring, b->valuestring) == 0) + { + return true; + } + + return false; + + case cJSON_Array: + { + cJSON *a_element = a->child; + cJSON *b_element = b->child; + + for (; (a_element != NULL) && (b_element != NULL);) + { + if (!cJSON_Compare(a_element, b_element, case_sensitive)) + { + return false; + } + + a_element = a_element->next; + b_element = b_element->next; + } + + /* one of the arrays is longer than the other */ + if (a_element != b_element) { + return false; + } + + return true; + } + + case cJSON_Object: + { + cJSON *a_element = NULL; + cJSON *b_element = NULL; + cJSON_ArrayForEach(a_element, a) + { + /* TODO This has O(n^2) runtime, which is horrible! */ + b_element = get_object_item(b, a_element->string, case_sensitive); + if (b_element == NULL) + { + return false; + } + + if (!cJSON_Compare(a_element, b_element, case_sensitive)) + { + return false; + } + } + + /* doing this twice, once on a and b to prevent true comparison if a subset of b + * TODO: Do this the proper way, this is just a fix for now */ + cJSON_ArrayForEach(b_element, b) + { + a_element = get_object_item(a, b_element->string, case_sensitive); + if (a_element == NULL) + { + return false; + } + + if (!cJSON_Compare(b_element, a_element, case_sensitive)) + { + return false; + } + } + + return true; + } + + default: + return false; + } +} + +CJSON_PUBLIC(void *) cJSON_malloc(size_t size) +{ + return global_hooks.allocate(size); +} + +CJSON_PUBLIC(void) cJSON_free(void *object) +{ + global_hooks.deallocate(object); +} diff --git a/cJSON/cJSON.h b/cJSON/cJSON.h new file mode 100644 index 0000000..1e38813 --- /dev/null +++ b/cJSON/cJSON.h @@ -0,0 +1,263 @@ +/* + Copyright (c) 2009-2017 Dave Gamble and cJSON contributors + + Permission is hereby granted, free of charge, to any person obtaining a copy + of this software and associated documentation files (the "Software"), to deal + in the Software without restriction, including without limitation the rights + to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + copies of the Software, and to permit persons to whom the Software is + furnished to do so, subject to the following conditions: + + The above copyright notice and this permission notice shall be included in + all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + THE SOFTWARE. +*/ + +#ifndef cJSON__h +#define cJSON__h + +#ifdef __cplusplus +extern "C" +{ +#endif + +/* project version */ +#define CJSON_VERSION_MAJOR 1 +#define CJSON_VERSION_MINOR 5 +#define CJSON_VERSION_PATCH 9 + +#include + +/* cJSON Types: */ +#define cJSON_Invalid (0) +#define cJSON_False (1 << 0) +#define cJSON_True (1 << 1) +#define cJSON_NULL (1 << 2) +#define cJSON_Number (1 << 3) +#define cJSON_String (1 << 4) +#define cJSON_Array (1 << 5) +#define cJSON_Object (1 << 6) +#define cJSON_Raw (1 << 7) /* raw json */ + +#define cJSON_IsReference 256 +#define cJSON_StringIsConst 512 + +/* The cJSON structure: */ +typedef struct cJSON +{ + /* next/prev allow you to walk array/object chains. Alternatively, use GetArraySize/GetArrayItem/GetObjectItem */ + struct cJSON *next; + struct cJSON *prev; + /* An array or object item will have a child pointer pointing to a chain of the items in the array/object. */ + struct cJSON *child; + + /* The type of the item, as above. */ + int type; + + /* The item's string, if type==cJSON_String and type == cJSON_Raw */ + char *valuestring; + /* writing to valueint is DEPRECATED, use cJSON_SetNumberValue instead */ + int valueint; + /* The item's number, if type==cJSON_Number */ + double valuedouble; + + /* The item's name string, if this item is the child of, or is in the list of subitems of an object. */ + char *string; +} cJSON; + +typedef struct cJSON_Hooks +{ + void *(*malloc_fn)(size_t sz); + void (*free_fn)(void *ptr); +} cJSON_Hooks; + +typedef int cJSON_bool; + +#if !defined(__WINDOWS__) && (defined(WIN32) || defined(WIN64) || defined(_MSC_VER) || defined(_WIN32)) +#define __WINDOWS__ +#endif +#ifdef __WINDOWS__ + +/* When compiling for windows, we specify a specific calling convention to avoid issues where we are being called from a project with a different default calling convention. For windows you have 2 define options: + +CJSON_HIDE_SYMBOLS - Define this in the case where you don't want to ever dllexport symbols +CJSON_EXPORT_SYMBOLS - Define this on library build when you want to dllexport symbols (default) +CJSON_IMPORT_SYMBOLS - Define this if you want to dllimport symbol + +For *nix builds that support visibility attribute, you can define similar behavior by + +setting default visibility to hidden by adding +-fvisibility=hidden (for gcc) +or +-xldscope=hidden (for sun cc) +to CFLAGS + +then using the CJSON_API_VISIBILITY flag to "export" the same symbols the way CJSON_EXPORT_SYMBOLS does + +*/ + +/* export symbols by default, this is necessary for copy pasting the C and header file */ +#if !defined(CJSON_HIDE_SYMBOLS) && !defined(CJSON_IMPORT_SYMBOLS) && !defined(CJSON_EXPORT_SYMBOLS) +#define CJSON_EXPORT_SYMBOLS +#endif + +#if defined(CJSON_HIDE_SYMBOLS) +#define CJSON_PUBLIC(type) type __stdcall +#elif defined(CJSON_EXPORT_SYMBOLS) +#define CJSON_PUBLIC(type) __declspec(dllexport) type __stdcall +#elif defined(CJSON_IMPORT_SYMBOLS) +#define CJSON_PUBLIC(type) __declspec(dllimport) type __stdcall +#endif +#else /* !WIN32 */ +#if (defined(__GNUC__) || defined(__SUNPRO_CC) || defined (__SUNPRO_C)) && defined(CJSON_API_VISIBILITY) +#define CJSON_PUBLIC(type) __attribute__((visibility("default"))) type +#else +#define CJSON_PUBLIC(type) type +#endif +#endif + +/* Limits how deeply nested arrays/objects can be before cJSON rejects to parse them. + * This is to prevent stack overflows. */ +#ifndef CJSON_NESTING_LIMIT +#define CJSON_NESTING_LIMIT 1000 +#endif + +/* returns the version of cJSON as a string */ +CJSON_PUBLIC(const char*) cJSON_Version(void); + +/* Supply malloc, realloc and free functions to cJSON */ +CJSON_PUBLIC(void) cJSON_InitHooks(cJSON_Hooks* hooks); + +/* Memory Management: the caller is always responsible to free the results from all variants of cJSON_Parse (with cJSON_Delete) and cJSON_Print (with stdlib free, cJSON_Hooks.free_fn, or cJSON_free as appropriate). The exception is cJSON_PrintPreallocated, where the caller has full responsibility of the buffer. */ +/* Supply a block of JSON, and this returns a cJSON object you can interrogate. */ +CJSON_PUBLIC(cJSON *) cJSON_Parse(const char *value); +/* ParseWithOpts allows you to require (and check) that the JSON is null terminated, and to retrieve the pointer to the final byte parsed. */ +/* If you supply a ptr in return_parse_end and parsing fails, then return_parse_end will contain a pointer to the error so will match cJSON_GetErrorPtr(). */ +CJSON_PUBLIC(cJSON *) cJSON_ParseWithOpts(const char *value, const char **return_parse_end, cJSON_bool require_null_terminated); + +/* Render a cJSON entity to text for transfer/storage. */ +CJSON_PUBLIC(char *) cJSON_Print(const cJSON *item); +/* Render a cJSON entity to text for transfer/storage without any formatting. */ +CJSON_PUBLIC(char *) cJSON_PrintUnformatted(const cJSON *item); +/* Render a cJSON entity to text using a buffered strategy. prebuffer is a guess at the final size. guessing well reduces reallocation. fmt=0 gives unformatted, =1 gives formatted */ +CJSON_PUBLIC(char *) cJSON_PrintBuffered(const cJSON *item, int prebuffer, cJSON_bool fmt); +/* Render a cJSON entity to text using a buffer already allocated in memory with given length. Returns 1 on success and 0 on failure. */ +/* NOTE: cJSON is not always 100% accurate in estimating how much memory it will use, so to be safe allocate 5 bytes more than you actually need */ +CJSON_PUBLIC(cJSON_bool) cJSON_PrintPreallocated(cJSON *item, char *buffer, const int length, const cJSON_bool format); +/* Delete a cJSON entity and all subentities. */ +CJSON_PUBLIC(void) cJSON_Delete(cJSON *c); + +/* Returns the number of items in an array (or object). */ +CJSON_PUBLIC(int) cJSON_GetArraySize(const cJSON *array); +/* Retrieve item number "item" from array "array". Returns NULL if unsuccessful. */ +CJSON_PUBLIC(cJSON *) cJSON_GetArrayItem(const cJSON *array, int index); +/* Get item "string" from object. Case insensitive. */ +CJSON_PUBLIC(cJSON *) cJSON_GetObjectItem(const cJSON * const object, const char * const string); +CJSON_PUBLIC(cJSON *) cJSON_GetObjectItemCaseSensitive(const cJSON * const object, const char * const string); +CJSON_PUBLIC(cJSON_bool) cJSON_HasObjectItem(const cJSON *object, const char *string); +/* For analysing failed parses. This returns a pointer to the parse error. You'll probably need to look a few chars back to make sense of it. Defined when cJSON_Parse() returns 0. 0 when cJSON_Parse() succeeds. */ +CJSON_PUBLIC(const char *) cJSON_GetErrorPtr(void); + +/* These functions check the type of an item */ +CJSON_PUBLIC(cJSON_bool) cJSON_IsInvalid(const cJSON * const item); +CJSON_PUBLIC(cJSON_bool) cJSON_IsFalse(const cJSON * const item); +CJSON_PUBLIC(cJSON_bool) cJSON_IsTrue(const cJSON * const item); +CJSON_PUBLIC(cJSON_bool) cJSON_IsBool(const cJSON * const item); +CJSON_PUBLIC(cJSON_bool) cJSON_IsNull(const cJSON * const item); +CJSON_PUBLIC(cJSON_bool) cJSON_IsNumber(const cJSON * const item); +CJSON_PUBLIC(cJSON_bool) cJSON_IsString(const cJSON * const item); +CJSON_PUBLIC(cJSON_bool) cJSON_IsArray(const cJSON * const item); +CJSON_PUBLIC(cJSON_bool) cJSON_IsObject(const cJSON * const item); +CJSON_PUBLIC(cJSON_bool) cJSON_IsRaw(const cJSON * const item); + +/* These calls create a cJSON item of the appropriate type. */ +CJSON_PUBLIC(cJSON *) cJSON_CreateNull(void); +CJSON_PUBLIC(cJSON *) cJSON_CreateTrue(void); +CJSON_PUBLIC(cJSON *) cJSON_CreateFalse(void); +CJSON_PUBLIC(cJSON *) cJSON_CreateBool(cJSON_bool boolean); +CJSON_PUBLIC(cJSON *) cJSON_CreateNumber(double num); +CJSON_PUBLIC(cJSON *) cJSON_CreateString(const char *string); +/* raw json */ +CJSON_PUBLIC(cJSON *) cJSON_CreateRaw(const char *raw); +CJSON_PUBLIC(cJSON *) cJSON_CreateArray(void); +CJSON_PUBLIC(cJSON *) cJSON_CreateObject(void); + +/* These utilities create an Array of count items. */ +CJSON_PUBLIC(cJSON *) cJSON_CreateIntArray(const int *numbers, int count); +CJSON_PUBLIC(cJSON *) cJSON_CreateFloatArray(const float *numbers, int count); +CJSON_PUBLIC(cJSON *) cJSON_CreateDoubleArray(const double *numbers, int count); +CJSON_PUBLIC(cJSON *) cJSON_CreateStringArray(const char **strings, int count); + +/* Append item to the specified array/object. */ +CJSON_PUBLIC(void) cJSON_AddItemToArray(cJSON *array, cJSON *item); +CJSON_PUBLIC(void) cJSON_AddItemToObject(cJSON *object, const char *string, cJSON *item); +/* Use this when string is definitely const (i.e. a literal, or as good as), and will definitely survive the cJSON object. + * WARNING: When this function was used, make sure to always check that (item->type & cJSON_StringIsConst) is zero before + * writing to `item->string` */ +CJSON_PUBLIC(void) cJSON_AddItemToObjectCS(cJSON *object, const char *string, cJSON *item); +/* Append reference to item to the specified array/object. Use this when you want to add an existing cJSON to a new cJSON, but don't want to corrupt your existing cJSON. */ +CJSON_PUBLIC(void) cJSON_AddItemReferenceToArray(cJSON *array, cJSON *item); +CJSON_PUBLIC(void) cJSON_AddItemReferenceToObject(cJSON *object, const char *string, cJSON *item); + +/* Remove/Detatch items from Arrays/Objects. */ +CJSON_PUBLIC(cJSON *) cJSON_DetachItemViaPointer(cJSON *parent, cJSON * const item); +CJSON_PUBLIC(cJSON *) cJSON_DetachItemFromArray(cJSON *array, int which); +CJSON_PUBLIC(void) cJSON_DeleteItemFromArray(cJSON *array, int which); +CJSON_PUBLIC(cJSON *) cJSON_DetachItemFromObject(cJSON *object, const char *string); +CJSON_PUBLIC(cJSON *) cJSON_DetachItemFromObjectCaseSensitive(cJSON *object, const char *string); +CJSON_PUBLIC(void) cJSON_DeleteItemFromObject(cJSON *object, const char *string); +CJSON_PUBLIC(void) cJSON_DeleteItemFromObjectCaseSensitive(cJSON *object, const char *string); + +/* Update array items. */ +CJSON_PUBLIC(void) cJSON_InsertItemInArray(cJSON *array, int which, cJSON *newitem); /* Shifts pre-existing items to the right. */ +CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemViaPointer(cJSON * const parent, cJSON * const item, cJSON * replacement); +CJSON_PUBLIC(void) cJSON_ReplaceItemInArray(cJSON *array, int which, cJSON *newitem); +CJSON_PUBLIC(void) cJSON_ReplaceItemInObject(cJSON *object,const char *string,cJSON *newitem); +CJSON_PUBLIC(void) cJSON_ReplaceItemInObjectCaseSensitive(cJSON *object,const char *string,cJSON *newitem); + +/* Duplicate a cJSON item */ +CJSON_PUBLIC(cJSON *) cJSON_Duplicate(const cJSON *item, cJSON_bool recurse); +/* Duplicate will create a new, identical cJSON item to the one you pass, in new memory that will +need to be released. With recurse!=0, it will duplicate any children connected to the item. +The item->next and ->prev pointers are always zero on return from Duplicate. */ +/* Recursively compare two cJSON items for equality. If either a or b is NULL or invalid, they will be considered unequal. + * case_sensitive determines if object keys are treated case sensitive (1) or case insensitive (0) */ +CJSON_PUBLIC(cJSON_bool) cJSON_Compare(const cJSON * const a, const cJSON * const b, const cJSON_bool case_sensitive); + + +CJSON_PUBLIC(void) cJSON_Minify(char *json); + +/* Macros for creating things quickly. */ +#define cJSON_AddNullToObject(object,name) cJSON_AddItemToObject(object, name, cJSON_CreateNull()) +#define cJSON_AddTrueToObject(object,name) cJSON_AddItemToObject(object, name, cJSON_CreateTrue()) +#define cJSON_AddFalseToObject(object,name) cJSON_AddItemToObject(object, name, cJSON_CreateFalse()) +#define cJSON_AddBoolToObject(object,name,b) cJSON_AddItemToObject(object, name, cJSON_CreateBool(b)) +#define cJSON_AddNumberToObject(object,name,n) cJSON_AddItemToObject(object, name, cJSON_CreateNumber(n)) +#define cJSON_AddStringToObject(object,name,s) cJSON_AddItemToObject(object, name, cJSON_CreateString(s)) +#define cJSON_AddRawToObject(object,name,s) cJSON_AddItemToObject(object, name, cJSON_CreateRaw(s)) + +/* When assigning an integer value, it needs to be propagated to valuedouble too. */ +#define cJSON_SetIntValue(object, number) ((object) ? (object)->valueint = (object)->valuedouble = (number) : (number)) +/* helper for the cJSON_SetNumberValue macro */ +CJSON_PUBLIC(double) cJSON_SetNumberHelper(cJSON *object, double number); +#define cJSON_SetNumberValue(object, number) ((object != NULL) ? cJSON_SetNumberHelper(object, (double)number) : (number)) + +/* Macro for iterating over an array or object */ +#define cJSON_ArrayForEach(element, array) for(element = (array != NULL) ? (array)->child : NULL; element != NULL; element = element->next) + +/* malloc/free objects using the malloc/free functions that have been set with cJSON_InitHooks */ +CJSON_PUBLIC(void *) cJSON_malloc(size_t size); +CJSON_PUBLIC(void) cJSON_free(void *object); + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/cJSON/cJSON_Utils.c b/cJSON/cJSON_Utils.c new file mode 100644 index 0000000..3adc6b2 --- /dev/null +++ b/cJSON/cJSON_Utils.c @@ -0,0 +1,1427 @@ +/* + Copyright (c) 2009-2017 Dave Gamble and cJSON contributors + + Permission is hereby granted, free of charge, to any person obtaining a copy + of this software and associated documentation files (the "Software"), to deal + in the Software without restriction, including without limitation the rights + to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + copies of the Software, and to permit persons to whom the Software is + furnished to do so, subject to the following conditions: + + The above copyright notice and this permission notice shall be included in + all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + THE SOFTWARE. +*/ + +#ifdef _MSC_VER +#pragma warning(disable: 4068) /* twtxtfix: booo... :-) */ +#endif +#pragma GCC visibility push(default) +#include +#include +#include +#include +#include +#pragma GCC visibility pop + +#include "cJSON_Utils.h" + +/* define our own boolean type */ +#define true ((cJSON_bool)1) +#define false ((cJSON_bool)0) + +static unsigned char* cJSONUtils_strdup(const unsigned char* const string) +{ + size_t length = 0; + unsigned char *copy = NULL; + + length = strlen((const char*)string) + sizeof(""); + copy = (unsigned char*) cJSON_malloc(length); + if (copy == NULL) + { + return NULL; + } + memcpy(copy, string, length); + + return copy; +} + +/* string comparison which doesn't consider NULL pointers equal */ +static int compare_strings(const unsigned char *string1, const unsigned char *string2, const cJSON_bool case_sensitive) +{ + if ((string1 == NULL) || (string2 == NULL)) + { + return 1; + } + + if (string1 == string2) + { + return 0; + } + + if (case_sensitive) + { + return strcmp((const char*)string1, (const char*)string2); + } + + for(; tolower(*string1) == tolower(*string2); (void)string1++, string2++) + { + if (*string1 == '\0') + { + return 0; + } + } + + return tolower(*string1) - tolower(*string2); +} + +/* Compare the next path element of two JSON pointers, two NULL pointers are considered unequal: */ +static cJSON_bool compare_pointers(const unsigned char *name, const unsigned char *pointer, const cJSON_bool case_sensitive) +{ + if ((name == NULL) || (pointer == NULL)) + { + return false; + } + + for (; (*name != '\0') && (*pointer != '\0') && (*pointer != '/'); (void)name++, pointer++) /* compare until next '/' */ + { + if (*pointer == '~') + { + /* check for escaped '~' (~0) and '/' (~1) */ + if (((pointer[1] != '0') || (*name != '~')) && ((pointer[1] != '1') || (*name != '/'))) + { + /* invalid escape sequence or wrong character in *name */ + return false; + } + else + { + pointer++; + } + } + else if ((!case_sensitive && (tolower(*name) != tolower(*pointer))) || (case_sensitive && (*name != *pointer))) + { + return false; + } + } + if (((*pointer != 0) && (*pointer != '/')) != (*name != 0)) + { + /* one string has ended, the other not */ + return false;; + } + + return true; +} + +/* calculate the length of a string if encoded as JSON pointer with ~0 and ~1 escape sequences */ +static size_t pointer_encoded_length(const unsigned char *string) +{ + size_t length; + for (length = 0; *string != '\0'; (void)string++, length++) + { + /* character needs to be escaped? */ + if ((*string == '~') || (*string == '/')) + { + length++; + } + } + + return length; +} + +/* copy a string while escaping '~' and '/' with ~0 and ~1 JSON pointer escape codes */ +static void encode_string_as_pointer(unsigned char *destination, const unsigned char *source) +{ + for (; source[0] != '\0'; (void)source++, destination++) + { + if (source[0] == '/') + { + destination[1] = '1'; + destination++; + } + else if (source[0] == '~') + { + destination[0] = '~'; + destination[1] = '1'; + destination++; + } + else + { + destination[0] = source[0]; + } + } + + destination[0] = '\0'; +} + +CJSON_PUBLIC(char *) cJSONUtils_FindPointerFromObjectTo(const cJSON * const object, const cJSON * const target) +{ + size_t child_index = 0; + cJSON *current_child = 0; + + if ((object == NULL) || (target == NULL)) + { + return NULL; + } + + if (object == target) + { + /* found */ + return (char*)cJSONUtils_strdup((const unsigned char*)""); + } + + /* recursively search all children of the object or array */ + for (current_child = object->child; current_child != NULL; (void)(current_child = current_child->next), child_index++) + { + unsigned char *target_pointer = (unsigned char*)cJSONUtils_FindPointerFromObjectTo(current_child, target); + /* found the target? */ + if (target_pointer != NULL) + { + if (cJSON_IsArray(object)) + { + /* reserve enough memory for a 64 bit integer + '/' and '\0' */ + unsigned char *full_pointer = (unsigned char*)cJSON_malloc(strlen((char*)target_pointer) + 20 + sizeof("/")); + /* check if conversion to unsigned long is valid + * This should be eliminated at compile time by dead code elimination + * if size_t is an alias of unsigned long, or if it is bigger */ + if (child_index > ULONG_MAX) + { + cJSON_free(target_pointer); + return NULL; + } + sprintf((char*)full_pointer, "/%lu%s", (unsigned long)child_index, target_pointer); /* / */ + cJSON_free(target_pointer); + + return (char*)full_pointer; + } + + if (cJSON_IsObject(object)) + { + unsigned char *full_pointer = (unsigned char*)cJSON_malloc(strlen((char*)target_pointer) + pointer_encoded_length((unsigned char*)current_child->string) + 2); + full_pointer[0] = '/'; + encode_string_as_pointer(full_pointer + 1, (unsigned char*)current_child->string); + strcat((char*)full_pointer, (char*)target_pointer); + cJSON_free(target_pointer); + + return (char*)full_pointer; + } + + /* reached leaf of the tree, found nothing */ + cJSON_free(target_pointer); + return NULL; + } + } + + /* not found */ + return NULL; +} + +/* non broken version of cJSON_GetArrayItem */ +static cJSON *get_array_item(const cJSON *array, size_t item) +{ + cJSON *child = array ? array->child : NULL; + while ((child != NULL) && (item > 0)) + { + item--; + child = child->next; + } + + return child; +} + +static cJSON_bool decode_array_index_from_pointer(const unsigned char * const pointer, size_t * const index) +{ + size_t parsed_index = 0; + size_t position = 0; + + if ((pointer[0] == '0') && ((pointer[1] != '\0') && (pointer[1] != '/'))) + { + /* leading zeroes are not permitted */ + return 0; + } + + for (position = 0; (pointer[position] >= '0') && (pointer[0] <= '9'); position++) + { + parsed_index = (10 * parsed_index) + (size_t)(pointer[position] - '0'); + + } + + if ((pointer[position] != '\0') && (pointer[position] != '/')) + { + return 0; + } + + *index = parsed_index; + + return 1; +} + +static cJSON *get_item_from_pointer(cJSON * const object, const char * pointer, const cJSON_bool case_sensitive) +{ + cJSON *current_element = object; + + if (pointer == NULL) + { + return NULL; + } + + /* follow path of the pointer */ + while ((pointer[0] == '/') && (current_element != NULL)) + { + pointer++; + if (cJSON_IsArray(current_element)) + { + size_t index = 0; + if (!decode_array_index_from_pointer((const unsigned char*)pointer, &index)) + { + return NULL; + } + + current_element = get_array_item(current_element, index); + } + else if (cJSON_IsObject(current_element)) + { + current_element = current_element->child; + /* GetObjectItem. */ + while ((current_element != NULL) && !compare_pointers((unsigned char*)current_element->string, (const unsigned char*)pointer, case_sensitive)) + { + current_element = current_element->next; + } + } + else + { + return NULL; + } + + /* skip to the next path token or end of string */ + while ((pointer[0] != '\0') && (pointer[0] != '/')) + { + pointer++; + } + } + + return current_element; +} + +CJSON_PUBLIC(cJSON *) cJSONUtils_GetPointer(cJSON * const object, const char *pointer) +{ + return get_item_from_pointer(object, pointer, false); +} + +CJSON_PUBLIC(cJSON *) cJSONUtils_GetPointerCaseSensitive(cJSON * const object, const char *pointer) +{ + return get_item_from_pointer(object, pointer, true); +} + +/* JSON Patch implementation. */ +static void decode_pointer_inplace(unsigned char *string) +{ + unsigned char *decoded_string = string; + + if (string == NULL) { + return; + } + + for (; *string; (void)decoded_string++, string++) + { + if (string[0] == '~') + { + if (string[1] == '0') + { + decoded_string[0] = '~'; + } + else if (string[1] == '1') + { + decoded_string[1] = '/'; + } + else + { + /* invalid escape sequence */ + return; + } + + string++; + } + } + + decoded_string[0] = '\0'; +} + +/* non-broken cJSON_DetachItemFromArray */ +static cJSON *detach_item_from_array(cJSON *array, size_t which) +{ + cJSON *c = array->child; + while (c && (which > 0)) + { + c = c->next; + which--; + } + if (!c) + { + /* item doesn't exist */ + return NULL; + } + if (c->prev) + { + /* not the first element */ + c->prev->next = c->next; + } + if (c->next) + { + c->next->prev = c->prev; + } + if (c==array->child) + { + array->child = c->next; + } + /* make sure the detached item doesn't point anywhere anymore */ + c->prev = c->next = NULL; + + return c; +} + +/* detach an item at the given path */ +static cJSON *detach_path(cJSON *object, const unsigned char *path, const cJSON_bool case_sensitive) +{ + unsigned char *parent_pointer = NULL; + unsigned char *child_pointer = NULL; + cJSON *parent = NULL; + cJSON *detached_item = NULL; + + /* copy path and split it in parent and child */ + parent_pointer = cJSONUtils_strdup(path); + if (parent_pointer == NULL) { + goto cleanup; + } + + child_pointer = (unsigned char*)strrchr((char*)parent_pointer, '/'); /* last '/' */ + if (child_pointer == NULL) + { + goto cleanup; + } + /* split strings */ + child_pointer[0] = '\0'; + child_pointer++; + + parent = get_item_from_pointer(object, (char*)parent_pointer, case_sensitive); + decode_pointer_inplace(child_pointer); + + if (cJSON_IsArray(parent)) + { + size_t index = 0; + if (!decode_array_index_from_pointer(child_pointer, &index)) + { + goto cleanup; + } + detached_item = detach_item_from_array(parent, index); + } + else if (cJSON_IsObject(parent)) + { + detached_item = cJSON_DetachItemFromObject(parent, (char*)child_pointer); + } + else + { + /* Couldn't find object to remove child from. */ + goto cleanup; + } + +cleanup: + if (parent_pointer != NULL) + { + cJSON_free(parent_pointer); + } + + return detached_item; +} + +/* sort lists using mergesort */ +static cJSON *sort_list(cJSON *list, const cJSON_bool case_sensitive) +{ + cJSON *first = list; + cJSON *second = list; + cJSON *current_item = list; + cJSON *result = list; + cJSON *result_tail = NULL; + + if ((list == NULL) || (list->next == NULL)) + { + /* One entry is sorted already. */ + return result; + } + + while ((current_item != NULL) && (current_item->next != NULL) && (compare_strings((unsigned char*)current_item->string, (unsigned char*)current_item->next->string, case_sensitive) < 0)) + { + /* Test for list sorted. */ + current_item = current_item->next; + } + if ((current_item == NULL) || (current_item->next == NULL)) + { + /* Leave sorted lists unmodified. */ + return result; + } + + /* reset pointer to the beginning */ + current_item = list; + while (current_item != NULL) + { + /* Walk two pointers to find the middle. */ + second = second->next; + current_item = current_item->next; + /* advances current_item two steps at a time */ + if (current_item != NULL) + { + current_item = current_item->next; + } + } + if ((second != NULL) && (second->prev != NULL)) + { + /* Split the lists */ + second->prev->next = NULL; + } + + /* Recursively sort the sub-lists. */ + first = sort_list(first, case_sensitive); + second = sort_list(second, case_sensitive); + result = NULL; + + /* Merge the sub-lists */ + while ((first != NULL) && (second != NULL)) + { + cJSON *smaller = NULL; + if (compare_strings((unsigned char*)first->string, (unsigned char*)second->string, false) < 0) + { + smaller = first; + } + else + { + smaller = second; + } + + if (result == NULL) + { + /* start merged list with the smaller element */ + result_tail = smaller; + result = smaller; + } + else + { + /* add smaller element to the list */ + result_tail->next = smaller; + smaller->prev = result_tail; + result_tail = smaller; + } + + if (first == smaller) + { + first = first->next; + } + else + { + second = second->next; + } + } + + if (first != NULL) + { + /* Append rest of first list. */ + if (result == NULL) + { + return first; + } + result_tail->next = first; + first->prev = result_tail; + } + if (second != NULL) + { + /* Append rest of second list */ + if (result == NULL) + { + return second; + } + result_tail->next = second; + second->prev = result_tail; + } + + return result; +} + +static void sort_object(cJSON * const object, const cJSON_bool case_sensitive) +{ + if (object == NULL) + { + return; + } + object->child = sort_list(object->child, case_sensitive); +} + +static cJSON_bool compare_json(cJSON *a, cJSON *b, const cJSON_bool case_sensitive) +{ + if ((a == NULL) || (b == NULL) || ((a->type & 0xFF) != (b->type & 0xFF))) + { + /* mismatched type. */ + return false; + } + switch (a->type & 0xFF) + { + case cJSON_Number: + /* numeric mismatch. */ + if ((a->valueint != b->valueint) || (a->valuedouble != b->valuedouble)) + { + return false; + } + else + { + return true; + } + + case cJSON_String: + /* string mismatch. */ + if (strcmp(a->valuestring, b->valuestring) != 0) + { + return false; + } + else + { + return true; + } + + case cJSON_Array: + for ((void)(a = a->child), b = b->child; (a != NULL) && (b != NULL); (void)(a = a->next), b = b->next) + { + cJSON_bool identical = compare_json(a, b, case_sensitive); + if (!identical) + { + return false; + } + } + + /* array size mismatch? (one of both children is not NULL) */ + if ((a != NULL) || (b != NULL)) + { + return false; + } + else + { + return true; + } + + case cJSON_Object: + sort_object(a, case_sensitive); + sort_object(b, case_sensitive); + for ((void)(a = a->child), b = b->child; (a != NULL) && (b != NULL); (void)(a = a->next), b = b->next) + { + cJSON_bool identical = false; + /* compare object keys */ + if (compare_strings((unsigned char*)a->string, (unsigned char*)b->string, case_sensitive)) + { + /* missing member */ + return false; + } + identical = compare_json(a, b, case_sensitive); + if (!identical) + { + return false; + } + } + + /* object length mismatch (one of both children is not null) */ + if ((a != NULL) || (b != NULL)) + { + return false; + } + else + { + return true; + } + + default: + break; + } + + /* null, true or false */ + return true; +} + +/* non broken version of cJSON_InsertItemInArray */ +static cJSON_bool insert_item_in_array(cJSON *array, size_t which, cJSON *newitem) +{ + cJSON *child = array->child; + while (child && (which > 0)) + { + child = child->next; + which--; + } + if (which > 0) + { + /* item is after the end of the array */ + return 0; + } + if (child == NULL) + { + cJSON_AddItemToArray(array, newitem); + return 1; + } + + /* insert into the linked list */ + newitem->next = child; + newitem->prev = child->prev; + child->prev = newitem; + + /* was it at the beginning */ + if (child == array->child) + { + array->child = newitem; + } + else + { + newitem->prev->next = newitem; + } + + return 1; +} + +static cJSON *get_object_item(const cJSON * const object, const char* name, const cJSON_bool case_sensitive) +{ + if (case_sensitive) + { + return cJSON_GetObjectItemCaseSensitive(object, name); + } + + return cJSON_GetObjectItem(object, name); +} + +enum patch_operation { INVALID, ADD, REMOVE, REPLACE, MOVE, COPY, TEST }; + +static enum patch_operation decode_patch_operation(const cJSON * const patch, const cJSON_bool case_sensitive) +{ + cJSON *operation = get_object_item(patch, "op", case_sensitive); + if (!cJSON_IsString(operation)) + { + return INVALID; + } + + if (strcmp(operation->valuestring, "add") == 0) + { + return ADD; + } + + if (strcmp(operation->valuestring, "remove") == 0) + { + return REMOVE; + } + + if (strcmp(operation->valuestring, "replace") == 0) + { + return REPLACE; + } + + if (strcmp(operation->valuestring, "move") == 0) + { + return MOVE; + } + + if (strcmp(operation->valuestring, "copy") == 0) + { + return COPY; + } + + if (strcmp(operation->valuestring, "test") == 0) + { + return TEST; + } + + return INVALID; +} + +/* overwrite and existing item with another one and free resources on the way */ +static void overwrite_item(cJSON * const root, const cJSON replacement) +{ + if (root == NULL) + { + return; + } + + if (root->string != NULL) + { + cJSON_free(root->string); + } + if (root->valuestring != NULL) + { + cJSON_free(root->valuestring); + } + if (root->child != NULL) + { + cJSON_Delete(root->child); + } + + memcpy(root, &replacement, sizeof(cJSON)); +} + +static int apply_patch(cJSON *object, const cJSON *patch, const cJSON_bool case_sensitive) +{ + cJSON *path = NULL; + cJSON *value = NULL; + cJSON *parent = NULL; + enum patch_operation opcode = INVALID; + unsigned char *parent_pointer = NULL; + unsigned char *child_pointer = NULL; + int status = 0; + + path = get_object_item(patch, "path", case_sensitive); + if (!cJSON_IsString(path)) + { + /* malformed patch. */ + status = 2; + goto cleanup; + } + + opcode = decode_patch_operation(patch, case_sensitive); + if (opcode == INVALID) + { + status = 3; + goto cleanup; + } + else if (opcode == TEST) + { + /* compare value: {...} with the given path */ + status = !compare_json(get_item_from_pointer(object, path->valuestring, case_sensitive), get_object_item(patch, "value", case_sensitive), case_sensitive); + goto cleanup; + } + + /* special case for replacing the root */ + if (path->valuestring[0] == '\0') + { + if (opcode == REMOVE) + { + static const cJSON invalid = { NULL, NULL, NULL, cJSON_Invalid, NULL, 0, 0, NULL}; + + overwrite_item(object, invalid); + + status = 0; + goto cleanup; + } + + if ((opcode == REPLACE) || (opcode == ADD)) + { + value = get_object_item(patch, "value", case_sensitive); + if (value == NULL) + { + /* missing "value" for add/replace. */ + status = 7; + goto cleanup; + } + + value = cJSON_Duplicate(value, 1); + if (value == NULL) + { + /* out of memory for add/replace. */ + status = 8; + goto cleanup; + } + + overwrite_item(object, *value); + + /* delete the duplicated value */ + cJSON_free(value); + value = NULL; + + /* the string "value" isn't needed */ + if (object->string != NULL) + { + cJSON_free(object->string); + object->string = NULL; + } + + status = 0; + goto cleanup; + } + } + + if ((opcode == REMOVE) || (opcode == REPLACE)) + { + /* Get rid of old. */ + cJSON *old_item = detach_path(object, (unsigned char*)path->valuestring, case_sensitive); + if (old_item == NULL) + { + status = 13; + goto cleanup; + } + cJSON_Delete(old_item); + if (opcode == REMOVE) + { + /* For Remove, this job is done. */ + status = 0; + goto cleanup; + } + } + + /* Copy/Move uses "from". */ + if ((opcode == MOVE) || (opcode == COPY)) + { + cJSON *from = get_object_item(patch, "from", case_sensitive); + if (from == NULL) + { + /* missing "from" for copy/move. */ + status = 4; + goto cleanup; + } + + if (opcode == MOVE) + { + value = detach_path(object, (unsigned char*)from->valuestring, case_sensitive); + } + if (opcode == COPY) + { + value = get_item_from_pointer(object, from->valuestring, case_sensitive); + } + if (value == NULL) + { + /* missing "from" for copy/move. */ + status = 5; + goto cleanup; + } + if (opcode == COPY) + { + value = cJSON_Duplicate(value, 1); + } + if (value == NULL) + { + /* out of memory for copy/move. */ + status = 6; + goto cleanup; + } + } + else /* Add/Replace uses "value". */ + { + value = get_object_item(patch, "value", case_sensitive); + if (value == NULL) + { + /* missing "value" for add/replace. */ + status = 7; + goto cleanup; + } + value = cJSON_Duplicate(value, 1); + if (value == NULL) + { + /* out of memory for add/replace. */ + status = 8; + goto cleanup; + } + } + + /* Now, just add "value" to "path". */ + + /* split pointer in parent and child */ + parent_pointer = cJSONUtils_strdup((unsigned char*)path->valuestring); + child_pointer = (unsigned char*)strrchr((char*)parent_pointer, '/'); + if (child_pointer != NULL) + { + child_pointer[0] = '\0'; + child_pointer++; + } + parent = get_item_from_pointer(object, (char*)parent_pointer, case_sensitive); + decode_pointer_inplace(child_pointer); + + /* add, remove, replace, move, copy, test. */ + if ((parent == NULL) || (child_pointer == NULL)) + { + /* Couldn't find object to add to. */ + status = 9; + goto cleanup; + } + else if (cJSON_IsArray(parent)) + { + if (strcmp((char*)child_pointer, "-") == 0) + { + cJSON_AddItemToArray(parent, value); + value = NULL; + } + else + { + size_t index = 0; + if (!decode_array_index_from_pointer(child_pointer, &index)) + { + status = 11; + goto cleanup; + } + + if (!insert_item_in_array(parent, index, value)) + { + status = 10; + goto cleanup; + } + value = NULL; + } + } + else if (cJSON_IsObject(parent)) + { + if (case_sensitive) + { + cJSON_DeleteItemFromObjectCaseSensitive(parent, (char*)child_pointer); + } + else + { + cJSON_DeleteItemFromObject(parent, (char*)child_pointer); + } + cJSON_AddItemToObject(parent, (char*)child_pointer, value); + value = NULL; + } + +cleanup: + if (value != NULL) + { + cJSON_Delete(value); + } + if (parent_pointer != NULL) + { + cJSON_free(parent_pointer); + } + + return status; +} + +CJSON_PUBLIC(int) cJSONUtils_ApplyPatches(cJSON * const object, const cJSON * const patches) +{ + const cJSON *current_patch = NULL; + int status = 0; + + if (!cJSON_IsArray(patches)) + { + /* malformed patches. */ + return 1; + } + + if (patches != NULL) + { + current_patch = patches->child; + } + + while (current_patch != NULL) + { + status = apply_patch(object, current_patch, false); + if (status != 0) + { + return status; + } + current_patch = current_patch->next; + } + + return 0; +} + +CJSON_PUBLIC(int) cJSONUtils_ApplyPatchesCaseSensitive(cJSON * const object, const cJSON * const patches) +{ + const cJSON *current_patch = NULL; + int status = 0; + + if (!cJSON_IsArray(patches)) + { + /* malformed patches. */ + return 1; + } + + if (patches != NULL) + { + current_patch = patches->child; + } + + while (current_patch != NULL) + { + status = apply_patch(object, current_patch, true); + if (status != 0) + { + return status; + } + current_patch = current_patch->next; + } + + return 0; +} + +static void compose_patch(cJSON * const patches, const unsigned char * const operation, const unsigned char * const path, const unsigned char *suffix, const cJSON * const value) +{ + cJSON *patch = NULL; + + if ((patches == NULL) || (operation == NULL) || (path == NULL)) + { + return; + } + + patch = cJSON_CreateObject(); + if (patch == NULL) + { + return; + } + cJSON_AddItemToObject(patch, "op", cJSON_CreateString((const char*)operation)); + + if (suffix == NULL) + { + cJSON_AddItemToObject(patch, "path", cJSON_CreateString((const char*)path)); + } + else + { + size_t suffix_length = pointer_encoded_length(suffix); + size_t path_length = strlen((const char*)path); + unsigned char *full_path = (unsigned char*)cJSON_malloc(path_length + suffix_length + sizeof("/")); + + sprintf((char*)full_path, "%s/", (const char*)path); + encode_string_as_pointer(full_path + path_length + 1, suffix); + + cJSON_AddItemToObject(patch, "path", cJSON_CreateString((const char*)full_path)); + cJSON_free(full_path); + } + + if (value != NULL) + { + cJSON_AddItemToObject(patch, "value", cJSON_Duplicate(value, 1)); + } + cJSON_AddItemToArray(patches, patch); +} + +CJSON_PUBLIC(void) cJSONUtils_AddPatchToArray(cJSON * const array, const char * const operation, const char * const path, const cJSON * const value) +{ + compose_patch(array, (const unsigned char*)operation, (const unsigned char*)path, NULL, value); +} + +static void create_patches(cJSON * const patches, const unsigned char * const path, cJSON * const from, cJSON * const to, const cJSON_bool case_sensitive) +{ + if ((from == NULL) || (to == NULL)) + { + return; + } + + if ((from->type & 0xFF) != (to->type & 0xFF)) + { + compose_patch(patches, (const unsigned char*)"replace", path, 0, to); + return; + } + + switch (from->type & 0xFF) + { + case cJSON_Number: + if ((from->valueint != to->valueint) || (from->valuedouble != to->valuedouble)) + { + compose_patch(patches, (const unsigned char*)"replace", path, NULL, to); + } + return; + + case cJSON_String: + if (strcmp(from->valuestring, to->valuestring) != 0) + { + compose_patch(patches, (const unsigned char*)"replace", path, NULL, to); + } + return; + + case cJSON_Array: + { + size_t index = 0; + cJSON *from_child = from->child; + cJSON *to_child = to->child; + unsigned char *new_path = (unsigned char*)cJSON_malloc(strlen((const char*)path) + 20 + sizeof("/")); /* Allow space for 64bit int. log10(2^64) = 20 */ + + /* generate patches for all array elements that exist in both "from" and "to" */ + for (index = 0; (from_child != NULL) && (to_child != NULL); (void)(from_child = from_child->next), (void)(to_child = to_child->next), index++) + { + /* check if conversion to unsigned long is valid + * This should be eliminated at compile time by dead code elimination + * if size_t is an alias of unsigned long, or if it is bigger */ + if (index > ULONG_MAX) + { + cJSON_free(new_path); + return; + } + sprintf((char*)new_path, "%s/%lu", path, (unsigned long)index); /* path of the current array element */ + create_patches(patches, new_path, from_child, to_child, case_sensitive); + } + + /* remove leftover elements from 'from' that are not in 'to' */ + for (; (from_child != NULL); (void)(from_child = from_child->next)) + { + /* check if conversion to unsigned long is valid + * This should be eliminated at compile time by dead code elimination + * if size_t is an alias of unsigned long, or if it is bigger */ + if (index > ULONG_MAX) + { + cJSON_free(new_path); + return; + } + sprintf((char*)new_path, "%lu", (unsigned long)index); + compose_patch(patches, (const unsigned char*)"remove", path, new_path, NULL); + } + /* add new elements in 'to' that were not in 'from' */ + for (; (to_child != NULL); (void)(to_child = to_child->next), index++) + { + compose_patch(patches, (const unsigned char*)"add", path, (const unsigned char*)"-", to_child); + } + cJSON_free(new_path); + return; + } + + case cJSON_Object: + { + cJSON *from_child = NULL; + cJSON *to_child = NULL; + sort_object(from, case_sensitive); + sort_object(to, case_sensitive); + + from_child = from->child; + to_child = to->child; + /* for all object values in the object with more of them */ + while ((from_child != NULL) || (to_child != NULL)) + { + int diff; + if (from_child == NULL) + { + diff = 1; + } + else if (to_child == NULL) + { + diff = -1; + } + else + { + diff = compare_strings((unsigned char*)from_child->string, (unsigned char*)to_child->string, case_sensitive); + } + + if (diff == 0) + { + /* both object keys are the same */ + size_t path_length = strlen((const char*)path); + size_t from_child_name_length = pointer_encoded_length((unsigned char*)from_child->string); + unsigned char *new_path = (unsigned char*)cJSON_malloc(path_length + from_child_name_length + sizeof("/")); + + sprintf((char*)new_path, "%s/", path); + encode_string_as_pointer(new_path + path_length + 1, (unsigned char*)from_child->string); + + /* create a patch for the element */ + create_patches(patches, new_path, from_child, to_child, case_sensitive); + cJSON_free(new_path); + + from_child = from_child->next; + to_child = to_child->next; + } + else if (diff < 0) + { + /* object element doesn't exist in 'to' --> remove it */ + compose_patch(patches, (const unsigned char*)"remove", path, (unsigned char*)from_child->string, NULL); + + from_child = from_child->next; + } + else + { + /* object element doesn't exist in 'from' --> add it */ + compose_patch(patches, (const unsigned char*)"add", path, (unsigned char*)to_child->string, to_child); + + to_child = to_child->next; + } + } + return; + } + + default: + break; + } +} + +CJSON_PUBLIC(cJSON *) cJSONUtils_GeneratePatches(cJSON * const from, cJSON * const to) +{ + cJSON *patches = NULL; + + if ((from == NULL) || (to == NULL)) + { + return NULL; + } + + patches = cJSON_CreateArray(); + create_patches(patches, (const unsigned char*)"", from, to, false); + + return patches; +} + +CJSON_PUBLIC(cJSON *) cJSONUtils_GeneratePatchesCaseSensitive(cJSON * const from, cJSON * const to) +{ + cJSON *patches = NULL; + + if ((from == NULL) || (to == NULL)) + { + return NULL; + } + + patches = cJSON_CreateArray(); + create_patches(patches, (const unsigned char*)"", from, to, true); + + return patches; +} + +CJSON_PUBLIC(void) cJSONUtils_SortObject(cJSON * const object) +{ + sort_object(object, false); +} + +CJSON_PUBLIC(void) cJSONUtils_SortObjectCaseSensitive(cJSON * const object) +{ + sort_object(object, true); +} + +static cJSON *merge_patch(cJSON *target, const cJSON * const patch, const cJSON_bool case_sensitive) +{ + cJSON *patch_child = NULL; + + if (!cJSON_IsObject(patch)) + { + /* scalar value, array or NULL, just duplicate */ + cJSON_Delete(target); + return cJSON_Duplicate(patch, 1); + } + + if (!cJSON_IsObject(target)) + { + cJSON_Delete(target); + target = cJSON_CreateObject(); + } + + patch_child = patch->child; + while (patch_child != NULL) + { + if (cJSON_IsNull(patch_child)) + { + /* NULL is the indicator to remove a value, see RFC7396 */ + if (case_sensitive) + { + cJSON_DeleteItemFromObjectCaseSensitive(target, patch_child->string); + } + else + { + cJSON_DeleteItemFromObject(target, patch_child->string); + } + } + else + { + cJSON *replace_me = NULL; + cJSON *replacement = NULL; + + if (case_sensitive) + { + replace_me = cJSON_DetachItemFromObjectCaseSensitive(target, patch_child->string); + } + else + { + replace_me = cJSON_DetachItemFromObject(target, patch_child->string); + } + + replacement = merge_patch(replace_me, patch_child, case_sensitive); + if (replacement == NULL) + { + return NULL; + } + + cJSON_AddItemToObject(target, patch_child->string, replacement); + } + patch_child = patch_child->next; + } + return target; +} + +CJSON_PUBLIC(cJSON *) cJSONUtils_MergePatch(cJSON *target, const cJSON * const patch) +{ + return merge_patch(target, patch, false); +} + +CJSON_PUBLIC(cJSON *) cJSONUtils_MergePatchCaseSensitive(cJSON *target, const cJSON * const patch) +{ + return merge_patch(target, patch, true); +} + +static cJSON *generate_merge_patch(cJSON * const from, cJSON * const to, const cJSON_bool case_sensitive) +{ + cJSON *from_child = NULL; + cJSON *to_child = NULL; + cJSON *patch = NULL; + if (to == NULL) + { + /* patch to delete everything */ + return cJSON_CreateNull(); + } + if (!cJSON_IsObject(to) || !cJSON_IsObject(from)) + { + return cJSON_Duplicate(to, 1); + } + + sort_object(from, case_sensitive); + sort_object(to, case_sensitive); + + from_child = from->child; + to_child = to->child; + patch = cJSON_CreateObject(); + while (from_child || to_child) + { + int diff; + if (from_child != NULL) + { + if (to_child != NULL) + { + diff = strcmp(from_child->string, to_child->string); + } + else + { + diff = -1; + } + } + else + { + diff = 1; + } + + if (diff < 0) + { + /* from has a value that to doesn't have -> remove */ + cJSON_AddItemToObject(patch, from_child->string, cJSON_CreateNull()); + + from_child = from_child->next; + } + else if (diff > 0) + { + /* to has a value that from doesn't have -> add to patch */ + cJSON_AddItemToObject(patch, to_child->string, cJSON_Duplicate(to_child, 1)); + + to_child = to_child->next; + } + else + { + /* object key exists in both objects */ + if (!compare_json(from_child, to_child, case_sensitive)) + { + /* not identical --> generate a patch */ + cJSON_AddItemToObject(patch, to_child->string, cJSONUtils_GenerateMergePatch(from_child, to_child)); + } + + /* next key in the object */ + from_child = from_child->next; + to_child = to_child->next; + } + } + if (patch->child == NULL) + { + /* no patch generated */ + cJSON_Delete(patch); + return NULL; + } + + return patch; +} + +CJSON_PUBLIC(cJSON *) cJSONUtils_GenerateMergePatch(cJSON * const from, cJSON * const to) +{ + return generate_merge_patch(from, to, false); +} + +CJSON_PUBLIC(cJSON *) cJSONUtils_GenerateMergePatchCaseSensitive(cJSON * const from, cJSON * const to) +{ + return generate_merge_patch(from, to, true); +} diff --git a/cJSON/cJSON_Utils.h b/cJSON/cJSON_Utils.h new file mode 100644 index 0000000..03ec10c --- /dev/null +++ b/cJSON/cJSON_Utils.h @@ -0,0 +1,74 @@ +/* + Copyright (c) 2009-2017 Dave Gamble and cJSON contributors + + Permission is hereby granted, free of charge, to any person obtaining a copy + of this software and associated documentation files (the "Software"), to deal + in the Software without restriction, including without limitation the rights + to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + copies of the Software, and to permit persons to whom the Software is + furnished to do so, subject to the following conditions: + + The above copyright notice and this permission notice shall be included in + all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + THE SOFTWARE. +*/ + +#include "cJSON.h" + +/* Implement RFC6901 (https://tools.ietf.org/html/rfc6901) JSON Pointer spec. */ +CJSON_PUBLIC(cJSON *) cJSONUtils_GetPointer(cJSON * const object, const char *pointer); +CJSON_PUBLIC(cJSON *) cJSONUtils_GetPointerCaseSensitive(cJSON * const object, const char *pointer); + +/* Implement RFC6902 (https://tools.ietf.org/html/rfc6902) JSON Patch spec. */ +/* NOTE: This modifies objects in 'from' and 'to' by sorting the elements by their key */ +CJSON_PUBLIC(cJSON *) cJSONUtils_GeneratePatches(cJSON * const from, cJSON * const to); +CJSON_PUBLIC(cJSON *) cJSONUtils_GeneratePatchesCaseSensitive(cJSON * const from, cJSON * const to); +/* Utility for generating patch array entries. */ +CJSON_PUBLIC(void) cJSONUtils_AddPatchToArray(cJSON * const array, const char * const operation, const char * const path, const cJSON * const value); +/* Returns 0 for success. */ +CJSON_PUBLIC(int) cJSONUtils_ApplyPatches(cJSON * const object, const cJSON * const patches); +CJSON_PUBLIC(int) cJSONUtils_ApplyPatchesCaseSensitive(cJSON * const object, const cJSON * const patches); + +/* +// Note that ApplyPatches is NOT atomic on failure. To implement an atomic ApplyPatches, use: +//int cJSONUtils_AtomicApplyPatches(cJSON **object, cJSON *patches) +//{ +// cJSON *modme = cJSON_Duplicate(*object, 1); +// int error = cJSONUtils_ApplyPatches(modme, patches); +// if (!error) +// { +// cJSON_Delete(*object); +// *object = modme; +// } +// else +// { +// cJSON_Delete(modme); +// } +// +// return error; +//} +// Code not added to library since this strategy is a LOT slower. +*/ + +/* Implement RFC7386 (https://tools.ietf.org/html/rfc7396) JSON Merge Patch spec. */ +/* target will be modified by patch. return value is new ptr for target. */ +CJSON_PUBLIC(cJSON *) cJSONUtils_MergePatch(cJSON *target, const cJSON * const patch); +CJSON_PUBLIC(cJSON *) cJSONUtils_MergePatchCaseSensitive(cJSON *target, const cJSON * const patch); +/* generates a patch to move from -> to */ +/* NOTE: This modifies objects in 'from' and 'to' by sorting the elements by their key */ +CJSON_PUBLIC(cJSON *) cJSONUtils_GenerateMergePatch(cJSON * const from, cJSON * const to); +CJSON_PUBLIC(cJSON *) cJSONUtils_GenerateMergePatchCaseSensitive(cJSON * const from, cJSON * const to); + +/* Given a root object and a target object, construct a pointer from one to the other. */ +CJSON_PUBLIC(char *) cJSONUtils_FindPointerFromObjectTo(const cJSON * const object, const cJSON * const target); + +/* Sorts the members of the object into alphabetical order. */ +CJSON_PUBLIC(void) cJSONUtils_SortObject(cJSON * const object); +CJSON_PUBLIC(void) cJSONUtils_SortObjectCaseSensitive(cJSON * const object); diff --git a/cmake_install.cmake b/cmake_install.cmake new file mode 100644 index 0000000..e2cad30 --- /dev/null +++ b/cmake_install.cmake @@ -0,0 +1,49 @@ +# Install script for directory: /home/derulin/Downloads/twtxtc/twtxtc + +# Set the install prefix +if(NOT DEFINED CMAKE_INSTALL_PREFIX) + set(CMAKE_INSTALL_PREFIX "/usr/local") +endif() +string(REGEX REPLACE "/$" "" CMAKE_INSTALL_PREFIX "${CMAKE_INSTALL_PREFIX}") + +# Set the install configuration name. +if(NOT DEFINED CMAKE_INSTALL_CONFIG_NAME) + if(BUILD_TYPE) + string(REGEX REPLACE "^[^A-Za-z0-9_]+" "" + CMAKE_INSTALL_CONFIG_NAME "${BUILD_TYPE}") + else() + set(CMAKE_INSTALL_CONFIG_NAME "Release") + endif() + message(STATUS "Install configuration: \"${CMAKE_INSTALL_CONFIG_NAME}\"") +endif() + +# Set the component getting installed. +if(NOT CMAKE_INSTALL_COMPONENT) + if(COMPONENT) + message(STATUS "Install component: \"${COMPONENT}\"") + set(CMAKE_INSTALL_COMPONENT "${COMPONENT}") + else() + set(CMAKE_INSTALL_COMPONENT) + endif() +endif() + +# Install shared libraries without execute permission? +if(NOT DEFINED CMAKE_INSTALL_SO_NO_EXE) + set(CMAKE_INSTALL_SO_NO_EXE "1") +endif() + +# Is this installation the result of a crosscompile? +if(NOT DEFINED CMAKE_CROSSCOMPILING) + set(CMAKE_CROSSCOMPILING "FALSE") +endif() + +if(CMAKE_INSTALL_COMPONENT) + set(CMAKE_INSTALL_MANIFEST "install_manifest_${CMAKE_INSTALL_COMPONENT}.txt") +else() + set(CMAKE_INSTALL_MANIFEST "install_manifest.txt") +endif() + +string(REPLACE ";" "\n" CMAKE_INSTALL_MANIFEST_CONTENT + "${CMAKE_INSTALL_MANIFEST_FILES}") +file(WRITE "/home/derulin/Downloads/twtxtc/twtxtc/${CMAKE_INSTALL_MANIFEST}" + "${CMAKE_INSTALL_MANIFEST_CONTENT}") diff --git a/twtxt.c b/twtxt.c new file mode 100644 index 0000000..f7f8cbb --- /dev/null +++ b/twtxt.c @@ -0,0 +1,727 @@ +/* + * twtxtc: A twtxt client in C. + * http://hub.darcs.net/dertuxmalwieder/twtxtc + * + * Licensed under the terms of the WTFPL. + * You just DO WHAT THE FUCK YOU WANT TO. + * + * Uses the cJSON parser, licensed under the + * terms of the MIT License. + */ + +#include +#include +#include +#include + +#define MIN(x, y) (((x) < (y)) ? (x) : (y)) + +#ifndef _WIN32 +# include /* MAXPATHLEN */ +#else +# ifdef _MSC_VER +# include /* errno */ +# endif +# ifndef NO_COLORS +# define WIN32_LEAN_AND_MEAN +# include /* colored output */ +# endif +#endif + +#include "cJSON/cJSON.h" +#include "cJSON/cJSON_Utils.h" /* for sorting */ +#include "twtxt.h" + + +int main(int argc, char *argv[]) { + /* Find the home directory: */ +#ifdef _MSC_VER + char* buf = NULL; + size_t sz = 0; + if (_dupenv_s(&buf, &sz, "USERPROFILE") == 0 && buf != NULL) { + strcpy_s(homedir, MAXPATHLEN, buf); + free(buf); + } +#elif defined(_WIN32) + strncpy(homedir, getenv("USERPROFILE"), MAXPATHLEN); +#else + strncpy(homedir, getenv("HOME"), MAXPATHLEN); +#endif + + /* Parse arguments: */ + if (argc < 2) { + /* Not even a command was specified. Show usage and exit. */ + showUsage(argv); + return 1; + } + + /* Find the default config file. */ +#ifdef _WIN32 + strcpy_s(configfilespec, MAXPATHLEN, homedir); + strcat_s(configfilespec, MAXPATHLEN, "\\.twtxtconfig"); +#else + strncpy(configfilespec, homedir, MAXPATHLEN); + strncat(configfilespec, "/.twtxtconfig", MAXPATHLEN); +#endif + + /* Find the default twtxt file. Requires the config file. */ +#ifdef _WIN32 + strcpy_s(twtxtfilespec, MAXPATHLEN, getConfigValue("twtxtfile", "twtxt.txt")); +#else + strncpy(twtxtfilespec, getConfigValue("twtxtfile", "twtxt.txt"), MAXPATHLEN); +#endif + + /* Find the default cURL executable file. */ +#ifdef _WIN32 + /* We might or might not be on the PowerShell here. Define curl.exe as the + curlfilespec because the built-in "curl" alias is too unpredictable. + + Note: Does _popen() actually respect shell aliases? I might or might not + want to revisit this in the future. + */ + strcpy_s(curlfilespec, MAXPATHLEN, "curl.exe"); +#else + /* Meh. */ + strncpy(curlfilespec, "curl", MAXPATHLEN); +#endif + + /* argv[1] should be the command now. */ + const char* command = argv[1]; + + if (strcmp(command, "tweet") == 0) { + if (argc != 3) { + /* No valid tweet specified. Show usage and exit. */ + puts("Invalid number of parameters."); + showUsage(argv); + return 1; + } + + /* Add to the twtxt file: */ + FILE* twtxtfile; + const char* text = argv[2]; + +#ifdef _MSC_VER + errno_t err; + if ((err = fopen_s(&twtxtfile, twtxtfilespec, "a")) != 0) { +#else + twtxtfile = fopen(twtxtfilespec, "a"); + if (twtxtfile == NULL) { +#endif + /* Whoops... */ + printf("Could not open '%s' for writing.\n", twtxtfilespec); + puts("Please check the access rights to the specified directory and try again."); + if (wrkbuf != NULL) { + /* Clean up first. */ + free(wrkbuf); + } + return 1; + } + + /* Get the current time string: */ + char timebuf[26]; + time_t now; + now = time(NULL); + strftime(timebuf, sizeof(timebuf), "%Y-%m-%dT%H:%M:%S%z", localtime(&now)); + + /* Add a colon in the timezone to match the official twtxt client format. + Currently the string has 24 of the 25 available characters, the : needs + to be inserted at pos. 23 (= timebuf[22]). + */ + timebuf[22] = ':'; + timebuf[24] = '0'; + timebuf[sizeof(timebuf)-1] = '\0'; /* Terminate! */ + + /* Build the new line and write it into the file: */ + fprintf(twtxtfile, "%s\t%s\n", timebuf, text); + + /* Done. */ + fclose(twtxtfile); + } + else if (strcmp(command, "timeline") == 0) { + /* Fetch and display the timeline. */ + FILE* curl_exec; + + /* Check for curl availability: */ + char sCurlTestCommand[256]; + sprintf(sCurlTestCommand, "%s 2>&1", curlfilespec); +#ifdef _WIN32 + if ((curl_exec = _popen(sCurlTestCommand, "rt")) == NULL) { +#else + if ((curl_exec = popen(sCurlTestCommand, "r")) == NULL) { +#endif + puts("You don't seem to have a cURL executable in your $PATH. Mind to fix that?"); + if (wrkbuf != NULL) { + /* Clean up before returning. */ + free(wrkbuf); + } + return 1; + } + + /* Fetch all timeline txt files: */ + cJSON* followingList = cJSON_Parse(getConfigValue("following", NULL)); + if (followingList != NULL && cJSON_GetArraySize(followingList) > 0) { + tweet_t *ptr = malloc(sizeof(tweet_t)); + cJSON *followingIter = followingList->child; + + size_t iAllTweets = 0; + size_t iLongestNickname = 0; + + while (followingIter) { + /* followingIter->string = the user name + followingIter->valuestring = the URL + + Try to retrieve all "timelines" and add them to + the tweet list: + */ + + char sCurlCommand[256]; + sprintf(sCurlCommand, "%s -s %s", curlfilespec, followingIter->valuestring); +#ifdef _WIN32 + curl_exec = _popen(sCurlCommand, "rt"); +#else + curl_exec = popen(sCurlCommand, "r"); +#endif + char output[512]; + while (!feof(curl_exec)) { + if (fgets(output, sizeof(output), curl_exec) != NULL) { + /* Analyze which should contain a valid twtxt tweet now: */ + int year = 0, month = 0, day = 0, hour = 0, min = 0, sec = 0, tzh = 0, tzm = 0; + int dummy = 0; + char tweet[500]; /* or whatevs */ + + /* There are numerous ways for formatting timestamps in twtxt (because lol standards). */ + char* style1 = "%4d-%2d-%2dT%2d:%2d:%2d+%2d:%2d\t%[^\n]"; /* yyyy-mm-ddThh:mm:ss+hh:mm\tTEXT */ + char* style2 = "%4d-%2d-%2dT%2d:%2d:%2d.%6d+%2d:%2d\t%[^\n]"; /* yyyy-mm-ddThh:mm:ss.millisecs+hh:mm\tTEXT */ + char* style3 = "%4d-%2d-%2dT%2d:%2d:%2dZ\t%[^\n]"; /* yyyy-mm-ddThh:mm:ssZ\tTEXT */ + char* style4 = "%4d-%2d-%2dT%2d:%2d:%2d.%dZ\t%[^\n]"; /* yyyy-mm-ddThh:mm:ss.msZ\tTEXT */ + char* style5 = "%4d-%2d-%2dT%2d:%2d:%2d.%6dZ\t%[^\n]"; /* yyyy-mm-ddThh:mm:ss.msZ\tTEXT */ + + /* Regex would probably be easier to handle here, but adds additional dependencies on some platforms. */ + if (sscanf(output, style1, &year, &month, &day, &hour, &min, &sec, &tzh, &tzm, tweet) != 9) { + if (sscanf(output, style2, &year, &month, &day, &hour, &min, &sec, &dummy, &tzh, &tzm, tweet) != 10) { + if (sscanf(output, style3, &year, &month, &day, &hour, &min, &sec, tweet) != 7) { + if (sscanf(output, style4, &year, &month, &day, &hour, &min, &sec, &dummy, tweet) != 8) { + if (sscanf(output, style5, &year, &month, &day, &hour, &min, &sec, &dummy, tweet) != 8) { + /* Not a valid twtxt tweet. */ + continue; + } + } + } + } + } + + /* Filter out time trolls: */ + time_t now = time(0); + struct tm * timeinfo = localtime(&now); + if (timeinfo->tm_year + 1902 < year) { + /* No chance. */ + continue; + } + + if (strlen(followingIter->string) > iLongestNickname) { + /* We should only check the length of users who actually tweeted recently. + The others are invisible to the user here. + */ + iLongestNickname = strlen(followingIter->string); + } + + /* Mentions to someone else than me are against the, uhm, law or so. */ + char mention[100]; + char url[256]; + char mentiontext[500]; + char initialtext[500]; + + if (sscanf(tweet, "@<%s %[^>]> %s", mention, url, mentiontext) == 3) { + if (strncmp(mention, getConfigValue("nickname", ""), strlen(mention)) != 0) { + /* Nope, not me. */ + continue; + } + else { + /* Reformat. */ + char newtweet[500]; + sprintf(newtweet, "@%s %s", mention, mentiontext); +#ifdef _MSC_VER + strcpy_s(tweet, sizeof(tweet), newtweet); +#else + strncpy(tweet, newtweet, sizeof(tweet)); +#endif + } + } + + /* Reformat inline mentions as well: */ + if (sscanf(tweet, "%[^@] @<%s %[^>]> %s", initialtext, mention, url, mentiontext) == 4) { + /* Reformat. */ + char newtweet[500]; + sprintf(newtweet, "%s @%s %s", initialtext, mention, mentiontext); +#ifdef _MSC_VER + strcpy_s(tweet, sizeof(tweet), newtweet); +#else + strncpy(tweet, newtweet, sizeof(tweet)); +#endif + } + + struct tm tweettime = { + .tm_year = year - 1900, + .tm_mon = month - 1, + .tm_mday = day, + .tm_hour = hour + tzh, + .tm_min = min, + .tm_sec = sec + }; + ptr[iAllTweets].datetime = tweettime; + +#ifdef _MSC_VER + strcpy_s(ptr[iAllTweets].username, 50, followingIter->string); + strcpy_s(ptr[iAllTweets].text, 512, tweet); +#else + strncpy(ptr[iAllTweets].username, followingIter->string, 50); + strncpy(ptr[iAllTweets].text, tweet, 512); +#endif + iAllTweets++; + + /* Add space for more tweets: */ + tweet_t *tmp_ptr; + tmp_ptr = realloc(ptr, (iAllTweets + 1) * sizeof(tweet_t)); + if (tmp_ptr == NULL) { + /* :-( */ + puts("realloc() failed. Panic!"); + if (wrkbuf != NULL) { + /* Don't panic without a cleanup though. */ + free(wrkbuf); + } + return 1; + } else { + // everything went ok, update the original pointer (temp_struct) + ptr = tmp_ptr; + } + } + } + + followingIter = followingIter->next; + } + + /* We need to rearrange the array by sorting by mktime(datetime), + then print the top entries with their user name: */ + tweetsort(ptr, iAllTweets); + + /* We probably have a sorted ptr now. Get its bottom . */ + puts(""); + double maxVal = MIN(atof(getConfigValue("maxlog", "100")), iAllTweets); + printf("These are your newest %d tweets:\n\n", (int) maxVal); + const char* spacing = getConfigValue("spacing", " "); + + int i = 0; /* loop variable */ + int j = 0; /* limiter to maxVal */ + for (i = iAllTweets; i >= 0, j <= maxVal; --i, ++j) { + /* Print the newest tweets (usertweet). */ + if (strlen(ptr[i].username) > iLongestNickname) { + /* Faulty line. */ + continue; + } + +#ifdef NO_COLORS + /* In no-color mode, the user name is prefixed with "@". */ + printf("@%*s%s%s\n", (int) iLongestNickname, ptr[i].username, spacing, ptr[i].text); +#else +# ifdef _WIN32 + /* The user prefers colorful text. Hooray. Let's fire up the Windows API! */ + HANDLE hConsole = GetStdHandle(STD_OUTPUT_HANDLE); + CONSOLE_SCREEN_BUFFER_INFO consoleInfo; + WORD saved_attributes; + + /* Make the user name yellow and the text white: */ + GetConsoleScreenBufferInfo(hConsole, &consoleInfo); + saved_attributes = consoleInfo.wAttributes; + + SetConsoleTextAttribute(hConsole, 14); /* 14 = yellow because wtf */ + printf("@%*s", (int) iLongestNickname, ptr[i].username); + + /* Restore the original values. */ + SetConsoleTextAttribute(hConsole, saved_attributes); + printf("%s", spacing); + + SetConsoleTextAttribute(hConsole, 15); /* 15 = white because srsly */ + printf("%s\n", ptr[i].text); + + /* Restore the original values again. */ + SetConsoleTextAttribute(hConsole, saved_attributes); +# else + /* POSIX colors are not really more convenient. */ +#define YELLOW "\x1B[33m" /* lol */ +#define WHITE "\x1B[37m" /* actually ... */ +#define RESET "\x1B[0m" /* WHY?! */ + printf(YELLOW "@%*s" RESET "%s" WHITE "%s\n" RESET, (int) iLongestNickname, ptr[i].username, spacing, ptr[i].text); +# endif +#endif + } + + free(ptr); + cJSON_Delete(followingList); + } + +#ifdef _WIN32 + _pclose(curl_exec); +#else + pclose(curl_exec); +#endif + } + else if (strcmp(command, "following") == 0) { + /* Fetch and display the subscribed users. */ + listFollowing(getConfigValue("following", NULL)); + if (wrkbuf != NULL) { + puts(wrkbuf); + } + } + else if (strcmp(command, "follow") == 0) { + if (argc != 4) { + /* No valid user+URL specified. Show usage and exit. */ + puts("Invalid number of parameters."); + showUsage(argv); + return 1; + } + + follow(getConfigValue("following", NULL), argv[2], argv[3]); + } + else if (strcmp(command, "unfollow") == 0) { + if (argc != 3) { + /* No valid user name specified. Show usage and exit. */ + puts("Invalid number of parameters."); + showUsage(argv); + return 1; + } + + unfollow(getConfigValue("following", NULL), argv[2]); + } + else if (strcmp(command, "help") == 0) { + /* Display the help and exit. */ + showUsage(argv); + return 0; + } + else { + /* Invalid command specified. Show usage and exit. */ + printf("Invalid command: %s\n", command); + showUsage(argv); + return 1; + } + + if (wrkbuf != NULL) { + free(wrkbuf); + } + return 0; +} + + +void showUsage(char* argv[]) { + /* Displays the available command-line flags. */ + puts(""); + puts("Usage:"); + printf("\t%s [COMMAND]\n", argv[0]); + puts(""); + puts("Commands:"); + puts("\ttweet \t\tAdds to your twtxt timeline."); + puts("\ttimeline\t\tDisplays your twtxt timeline."); + puts("\tfollowing\t\tGives you a list of all people you follow."); + puts("\tfollow \tAdds the twtxt file from to your timeline."); + puts("\t\t\t\t defines the user name to display."); + puts("\tunfollow \t\tRemoves the user with the display name from your timeline."); + puts("\thelp\t\t\tDisplays this help screen.\n"); + puts("Configuration:"); + puts("\ttwtxtc uses the following configuration file:"); +#ifdef _WIN32 + printf("\t%s\\.twtxtconfig", homedir); +#else + printf("\t%s/.twtxtconfig", homedir); +#endif + puts("\n"); +} + + +void tweetsort(tweet_t* tweets, int size) { + /* Quicksort over according to mktime(datetime). */ + if (size < 2) { return; } + + int pivot = (int) mktime(&tweets[size / 2].datetime); + + int i, j; + for (i = 0, j = size - 1; ; i++, j--) { + while (mktime(&tweets[i].datetime) < pivot) { i++; } + while (mktime(&tweets[j].datetime) > pivot) { j--; } + + if (i >= j) { break; } + + tweet_t temp = tweets[i]; + tweets[i] = tweets[j]; + tweets[j] = temp; + } + + tweetsort(tweets, i); + tweetsort(tweets + i, size - i); +} + + +cJSON* getConfigFile(void) { + /* Returns the config. file as JSON object or NULL on errors. */ + FILE *configfile; + char* configstring; + long lSize; + + /* Read the config file: */ + configfile = fopen(configfilespec, "ab+"); + if (!configfile) { + /* Failed to read the file, suddenly...? */ + printf("Could not open '%s'.\n", configfilespec); + return NULL; + } + + fseek(configfile, 0L, SEEK_END); + lSize = ftell(configfile); + rewind(configfile); + + configstring = calloc(1, lSize + 1); + if (!configstring) { + /* Allocation failed. */ + puts("Memory allocation failed."); + fclose(configfile); + return NULL; + } + + if (lSize > 0 && fread(configstring, lSize, 1, configfile) != 1) { + /* File reading failed. */ + fclose(configfile); + free(configstring); + puts("Could not read from the configuration file. You should check that."); + return NULL; + } + + fclose(configfile); + + /* Now parse the JSON. */ + cJSON* ret = cJSON_Parse(lSize > 0 ? configstring : "{}"); + free(configstring); + + return ret; +} + + +const char* getConfigValue(const char* key, const char* defaultvalue) { + /* Reads the configuration value from . + * Returns if the configuration file does not + * exist or the key could not be found. */ + cJSON* root = getConfigFile(); + + if (root == NULL) { + /* Invalid configuration file, probably. */ + puts("Please validate your .twtxtconfig format - we could not parse it. :-("); + return defaultvalue; + } + + if (strcmp(key, "following") == 0) { + /* The list of users you follow is an object. Return it as such. */ + return cJSON_Print(cJSON_GetObjectItem(root, "following")); + } + + /* Parse the configuration file. */ + char strvalue[512]; + + cJSON *jsonValue = cJSON_GetObjectItem(root, key); + if (jsonValue == NULL) { + /* We don't have this value. Return what was said to be normal. */ + return defaultvalue; + } + + /* Allocate some space: */ + wrkbuf = (char *)malloc(sizeof(strvalue)); + +#ifdef _MSC_VER + if (cJSON_IsNumber(jsonValue)) { + sprintf_s(strvalue, sizeof(strvalue), "%f", jsonValue->valuedouble); + } + else { + sprintf_s(strvalue, sizeof(strvalue), "%s", jsonValue->valuestring); + } + strcpy_s(wrkbuf, sizeof(strvalue), strvalue); +#else + if (cJSON_IsNumber(jsonValue)) { + sprintf(strvalue, "%f", jsonValue->valuedouble); + } + else { + sprintf(strvalue, "%s", jsonValue->valuestring); + } + strncpy(wrkbuf, strvalue, sizeof(strvalue)); +#endif + + /* Cleanup */ + cJSON_Delete(root); + + return wrkbuf == NULL ? defaultvalue : wrkbuf; +} + + +void listFollowing(const char* followingJSON) { + /* Puts the list of users you follow into . */ + cJSON *following = cJSON_Parse(followingJSON); + + if (following == NULL || cJSON_GetArraySize(following) == 0) { + puts("You are not following any users yet.\n"); + return; + } + + /* There actually are people you follow. */ + wrkbuf = (char *)malloc(4096); /* 4 KiB should be enough for now */ +#ifdef _MSC_VER + strcpy_s(wrkbuf, 4096, ""); +#else + strncpy(wrkbuf, "", 4096); +#endif + + puts(""); + puts("You are following these users:"); + + /* Sort the list first: */ + cJSONUtils_SortObject(following); + + cJSON *followinglist = following->child; + while (followinglist) { + /* Traverse through the list. */ + char strvalue[400]; + +#ifdef _MSC_VER + sprintf_s(strvalue, sizeof(strvalue), " @%-20s [ %s ]\n", followinglist->string, followinglist->valuestring); + strcat_s(wrkbuf, sizeof(strvalue), strvalue); +#else + sprintf(strvalue, " @%-20s [ %s ]", followinglist->string, followinglist->valuestring); + strncat(wrkbuf, strvalue, sizeof(wrkbuf)); +#endif + followinglist = followinglist->next; + } + + cJSON_Delete(followinglist); + cJSON_Delete(following); +} + + +void follow(const char* followingJSON, const char* username, const char* URL) { + /* Tries to follow . */ + cJSON *following = cJSON_Parse(followingJSON); + + int hasFollowingList = 1; + if (following == NULL) { + /* This would be the first user to follow ... */ + following = cJSON_CreateObject(); + hasFollowingList = 0; + } + + /* Avoid duplicates. */ + cJSON *followinglist = following->child; + + while (followinglist) { + /* followinglist->string = the user name */ + if (strncmp(followinglist->string, username, strlen(followinglist->string)) == 0) { + /* This is the user. */ + puts("You already follow this user."); + + /* Clean up. */ + cJSON_Delete(following); + return; + } + + followinglist = followinglist->next; + } + + /* Add the data. */ + cJSON_AddStringToObject(following, username, URL); + + /* Write the list back. */ + cJSON* cjconfig = getConfigFile(); + if (cjconfig != NULL) { + if (hasFollowingList == 0) { + /* The user had no following list up to this point. Add one. */ + cJSON_AddItemToObject(cjconfig, "following", following); + } + else { + cJSON_ReplaceItemInObject(cjconfig, "following", following); + } + FILE* configfile; +#ifdef _MSC_VER + errno_t err; + if ((err = fopen_s(&configfile, configfilespec, "w")) != 0) { +#else + configfile = fopen(configfilespec, "w"); + if (configfile == NULL) { +#endif + /* Whoops... */ + printf("Could not open '%s' for writing.\n", configfilespec); + puts("Please check the access rights and try again."); + } + else { + fprintf(configfile, "%s", cJSON_Print(cjconfig)); + fclose(configfile); + + printf("You follow @%s now.\n", username); + } + + free(cjconfig); + } + + cJSON_Delete(following); +} + +void unfollow(const char* followingJSON, const char* username) { + /* Tries to unfollow . */ + cJSON *following = cJSON_Parse(followingJSON); + + if (following == NULL) { + puts("You are not following any users yet."); + return; + } + + cJSON *followinglist = following->child; + cJSON *newList = cJSON_CreateObject(); + int foundUser = 0; + + while (followinglist) { + /* followinglist->string = the user name */ + if (strncmp(followinglist->string, username, strlen(followinglist->string)) == 0) { + /* This is the user. Skip it. */ + foundUser = 1; + followinglist = followinglist->next; + continue; + } + + /* Build a new list by copying the old one minus the user to unfollow. */ + cJSON_AddStringToObject(newList, followinglist->string, followinglist->valuestring); + followinglist = followinglist->next; + } + + if (!foundUser) { + /* We can't unfollow a user we don't follow. */ + puts("You do not follow this user."); + } + else { + /* Write newList back into the configuration file. */ + cJSON* cjconfig = getConfigFile(); + if (cjconfig != NULL) { + cJSON_ReplaceItemInObject(cjconfig, "following", newList); + FILE* configfile; +#ifdef _MSC_VER + errno_t err; + if ((err = fopen_s(&configfile, configfilespec, "w")) != 0) { +#else + configfile = fopen(configfilespec, "w"); + if (configfile == NULL) { +#endif + /* Whoops... */ + printf("Could not open '%s' for writing.\n", configfilespec); + puts("Please check the access rights and try again."); + } + else { + fprintf(configfile, "%s", cJSON_Print(cjconfig)); + fclose(configfile); + } + } + + free(cjconfig); + } + cJSON_Delete(following); + cJSON_Delete(newList); +} diff --git a/twtxt.h b/twtxt.h new file mode 100644 index 0000000..a69ce99 --- /dev/null +++ b/twtxt.h @@ -0,0 +1,47 @@ +/* + * twtxtc: A twtxt client in C. + * http://hub.darcs.net/dertuxmalwieder/twtxtc + * + * Licensed under the terms of the WTFPL. + * You just DO WHAT THE FUCK YOU WANT TO. + * + * Uses the cJSON parser, licensed under the + * terms of the MIT License. + */ + +#include +#include "cJSON/cJSON.h" + +#ifdef _WIN32 +/* We need the path length first. */ +#include +#define MAXPATHLEN _MAX_PATH +#endif + +char* wrkbuf; + +typedef struct _tweet_t { + struct tm datetime; + char username[50]; + char text[512]; +} tweet_t; + + +/* PATHS */ + +char homedir[MAXPATHLEN]; +char configfilespec[MAXPATHLEN]; +char twtxtfilespec[MAXPATHLEN]; +char curlfilespec[MAXPATHLEN]; + + +/* FUNCTIONS */ + +void showUsage(char* argv[]); +cJSON* getConfigFile(void); +const char* getConfigValue(const char* key, const char* defaultvalue); + +void listFollowing(const char* followingJSON); +void follow(const char* followingJSON, const char* username, const char* URL); +void unfollow(const char* followingJSON, const char* username); +void tweetsort(tweet_t* tweets, int size); diff --git a/twtxtc b/twtxtc new file mode 100755 index 0000000..b6a65ba Binary files /dev/null and b/twtxtc differ -- cgit v1.2.3