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#include "wily.h"
#include "data.h"
enum {
MAXNAMES = 10240 /* initial number of names in a directory */
};
static int
mycmp (const void *a, const void *d) {
return strcmp(*(char**)a, *(char**)d);
}
/* A few OS's have file systems that know which files in a directory are dirs. */
#ifdef DT_DIR
#define CHECKDIR(dp) ((dp)->d_type == DT_DIR)
#else
#define CHECKDIR(dp) (0)
#endif
/*
* Read 'dirp', return null-terminated array of strings representing the
* files in the directory. Both the strings and the array need to be
* freed later (use dirnames_free()).
*
* Returns 0 on error.
*/
char **
dirnames (DIR *dirp, char *path) {
struct stat statbuf;
struct dirent *direntp;
char *name;
char **list;
int nfiles;
int maxnames = MAXNAMES;
/* Read the directory into a big buffer */
rewinddir(dirp); /* Workaround for possible FreeBSD bug. */
list = (char**) salloc(maxnames * sizeof(char*));
/* temporarily chdir so we can stat */
if(chdir(path)) {
diag(path, "couldn't chdir");
return 0;
}
nfiles = 0;
while ((direntp = readdir(dirp))) {
name = direntp->d_name;
if( name[0] == '.' && (!show_dot_files || name[1]=='\0')) {
continue;
}
if (!(nfiles+2 < maxnames) ) {
maxnames *= 2;
list = (char**) srealloc(list, maxnames * sizeof(char*));
}
if (CHECKDIR(direntp) ||
(stat(name, &statbuf) >= 0 && S_ISDIR(statbuf.st_mode))) {
Path buf;
sprintf(buf, "%s/", name);
list[nfiles++] = strdup(buf);
} else {
list[nfiles++] = strdup(name);
}
}
/* return to wilydir */
if(chdir(wilydir)) {
diag(wilydir, "couldn't chdir back to wilydir [%s]", wilydir);
}
closedir(dirp);
qsort(list, nfiles, sizeof(char*), mycmp);
list[nfiles] = 0;
return list;
}
/* Keep consistent with dirnames() */
void
dirnames_free(char**names) {
char **s;
if(!names)
return;
for(s=names; *s; s++)
free(*s);
free(names);
}
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