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#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include <errno.h>
#include <posthaste/debug.h>
#include <posthaste/parser.h>
#include <posthaste/core.h>
/**
* Read whole file into a buffer and return pointer to buffer.
* Possibly kind of silly to have both \p file and \p f.
* Apparently there's no standardized way to get the file name of a
* file pointer.
*
* @param fname Name of file to read.
* @param f File pointer.
* @return Pointer to buffer with file contents.
*/
static char *read_file(const char *fname, FILE *f)
{
fseek(f, 0, SEEK_END);
long s = ftell(f);
if (s == LONG_MAX) {
/** @todo should probably do this via fstat or something */
error("%s might be a directory", fname);
return NULL;
}
fseek(f, 0, SEEK_SET);
char *buf = malloc(s + 1);
if (!buf)
return NULL;
fread(buf, s + 1, 1, f);
/* remember terminating null */
buf[s] = 0;
return buf;
}
int run(const char *fname)
{
FILE *f = fopen(fname, "rb");
if (!f) {
error("failed opening %s: %s\n", fname, strerror(errno));
return -1;
}
const char *buf = read_file(fname, f);
fclose(f);
if (!buf)
return -1;
struct parser *p = create_parser();
if (!p)
return -1;
parse(p, fname, buf);
int ret = p->failed ? -1 : 0;
/* eventually do other stuff as well */
free((void *)buf);
destroy_parser(p);
return ret;
}
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