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#define _POSIX_C_SOURCE 200809L
#include "cftw.h"
#include <dynstr.h>
#include <dirent.h>
#include <sys/stat.h>
#include <errno.h>
#include <stdio.h>
#include <stdint.h>
#include <string.h>
int cftw(const char *const dirpath, int (*const fn)(const char *,
const struct stat *, void *), void *const user)
{
int ret = -1;
DIR *const d = opendir(dirpath);
if (!d)
{
fprintf(stderr, "%s: opendir(2): %s\n", __func__, strerror(errno));
goto end;
}
for (;;)
{
errno = 0;
struct dirent *const de = readdir(d);
if (errno)
{
fprintf(stderr, "%s: readdir(3): %s\n", __func__, strerror(errno));
goto end;
}
else if (!de)
break;
const char *const path = de->d_name;
if (!strcmp(path, ".") || !strcmp(path, ".."))
continue;
const char *const sep = dirpath[strlen(dirpath) - 1] == '/' ? "" : "/";
struct stat sb;
struct dynstr d;
dynstr_init(&d);
if (dynstr_append(&d, "%s%s%s", dirpath, sep, path))
{
fprintf(stderr, "%s: dynstr_append failed\n", __func__);
return -1;
}
const int r = stat(d.str, &sb);
if (r)
fprintf(stderr, "%s: stat(2) %s: %s\n",
__func__, path, strerror(errno));
else if (S_ISDIR(sb.st_mode))
{
if ((ret = cftw(d.str, fn, user)))
;
else if ((ret = fn(d.str, &sb, user)))
;
}
else if (S_ISREG(sb.st_mode))
ret = fn(d.str, &sb, user);
else
fprintf(stderr, "%s: unexpected st_mode %ju\n",
__func__, (uintmax_t)sb.st_mode);
dynstr_free(&d);
if (ret)
goto end;
}
ret = 0;
end:
if (d && closedir(d))
{
fprintf(stderr, "%s: closedir(2): %s\n", __func__, strerror(errno));
ret = -1;
}
return ret;
}
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