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#ifndef READFILE_H
#define READFILE_H
#ifdef __cplusplus
extern "C" {
#endif
#include <stdio.h>
#include <stdlib.h>
static char *readfile(const char *filename, size_t max_size, size_t *size_out)
{
FILE *fp;
long k;
size_t size, pos, n, _out;
char *buf;
size_out = size_out ? size_out : &_out;
fp = fopen(filename, "rb");
size = 0;
buf = 0;
if (!fp) {
goto fail;
}
fseek(fp, 0L, SEEK_END);
k = ftell(fp);
if (k < 0) goto fail;
size = (size_t)k;
*size_out = size;
if (max_size > 0 && size > max_size) {
goto fail;
}
rewind(fp);
buf = (char *)malloc(size ? size : 1);
if (!buf) {
goto fail;
}
pos = 0;
while ((n = fread(buf + pos, 1, size - pos, fp))) {
pos += n;
}
if (pos != size) {
goto fail;
}
fclose(fp);
*size_out = size;
return buf;
fail:
if (fp) {
fclose(fp);
}
if (buf) {
free(buf);
}
*size_out = size;
return 0;
}
#ifdef __cplusplus
}
#endif
#endif /* READFILE_H */
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