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#pragma once
#include <stdio.h>
#include <stdlib.h>
static char *
drain(FILE *fp, long *size)
{
if (fseek(fp, 0, SEEK_END) < 0) {
perror("drain:SEEK_END");
return NULL;
}
*size = ftell(fp);
if (fseek(fp, 0, SEEK_SET) < 0) {
perror("drain:SEEK_SET");
return NULL;
}
char *const s = malloc(*size + 1);
if (s == NULL) {
perror("drain:malloc");
return NULL;
}
if ((long)fread(s, 1, *size, fp) != *size) {
perror("drain:fread");
free(s);
return NULL;
}
s[*size] = '\0';
return s;
}
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