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- /* Directory routines
- Copyright (C) 1994 Miguel de Icaza.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #include <config.h>
- #include "tty.h"
- #include "fs.h"
-
- #include <string.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <errno.h>
- #include <sys/stat.h>
- #include "mad.h"
- #include "global.h"
- #define DIR_H_INCLUDE_HANDLE_DIRENT
- #include "dir.h"
- #include "util.h"
- #include "tree.h"
- #include "../vfs/vfs.h"
-
- /* "$Id: dir.c,v 1.3 1995/09/01 18:57:15 br811563 Exp br811563 $" */
-
- /* If true show files starting with a dot */
- int show_dot_files = 1;
-
- /* If true show files ending in ~ */
- int show_backups = 0;
-
- /* If false then directories are shown separately from files */
- int mix_all_files = 0;
-
- /* Reverse flag */
- static int reverse = 1;
-
- /* Are the files sorted case sensitively? */
- static int case_sensitive = 1;
-
- #define MY_ISDIR(x) ( (S_ISDIR (x->buf.st_mode) || x->f.link_to_dir) ? 1 : 0)
-
- sort_orders_t sort_orders [SORT_TYPES] = {
- { "Unsorted", unsorted },
- { "Name", sort_name },
- { "Extension", sort_ext },
- { "Modify time", sort_time },
- { "Access time", sort_atime },
- { "Change time", sort_ctime },
- { "Size", sort_size },
- { "Inode", sort_inode }
- };
-
- #define string_sortcomp(a,b) case_sensitive ? strcmp (a,b) : strcasecmp (a,b)
-
- int unsorted (const file_entry *a, const file_entry *b)
- {
- return 0;
- }
-
- int sort_name (const file_entry *a, const file_entry *b)
- {
- int ad = MY_ISDIR (a);
- int bd = MY_ISDIR (b);
-
- if (ad == bd || mix_all_files)
- return string_sortcomp (a->fname, b->fname) * reverse;
- return bd-ad;
- }
-
- int sort_ext (const file_entry *a, const file_entry *b)
- {
- char *exta, *extb;
- int r;
- int ad = MY_ISDIR (a);
- int bd = MY_ISDIR (b);
-
- if (ad == bd || mix_all_files){
- exta = extension (a->fname);
- extb = extension (b->fname);
- r = string_sortcomp (exta, extb);
- if (r)
- return r * reverse;
- else
- return sort_name (a, b);
- } else
- return bd-ad;
- }
-
- int sort_time (const file_entry *a, const file_entry *b)
- {
- int ad = MY_ISDIR (a);
- int bd = MY_ISDIR (b);
-
- if (ad == bd || mix_all_files)
- return (a->buf.st_mtime - b->buf.st_mtime) * reverse;
- else
- return bd-ad;
- }
-
- int sort_ctime (const file_entry *a, const file_entry *b)
- {
- int ad = MY_ISDIR (a);
- int bd = MY_ISDIR (b);
-
- if (ad == bd || mix_all_files)
- return (a->buf.st_ctime - b->buf.st_ctime) * reverse;
- else
- return bd-ad;
- }
-
- int sort_atime (const file_entry *a, const file_entry *b)
- {
- int ad = MY_ISDIR (a);
- int bd = MY_ISDIR (b);
-
- if (ad == bd || mix_all_files)
- return (a->buf.st_atime - b->buf.st_atime) * reverse;
- else
- return bd-ad;
- }
-
- int sort_inode (const file_entry *a, const file_entry *b)
- {
- int ad = MY_ISDIR (a);
- int bd = MY_ISDIR (b);
-
- if (ad == bd || mix_all_files)
- return (a->buf.st_ino - b->buf.st_ino) * reverse;
- else
- return bd-ad;
- }
-
- int sort_size (const file_entry *a, const file_entry *b)
- {
- int ad = MY_ISDIR (a);
- int bd = MY_ISDIR (b);
-
- if (ad == bd || mix_all_files)
- return (b->buf.st_size - a->buf.st_size) * reverse;
- else
- return bd-ad;
- }
-
- void do_sort (dir_list *list, sortfn *sort, int top, int reverse_f, int case_sensitive_f)
- {
- reverse = reverse_f ? -1 : 1;
- case_sensitive = case_sensitive_f;
- qsort (&(list->list) [1], top, sizeof (file_entry), sort);
- }
-
- void clean_dir (dir_list *list, int count)
- {
- int i;
-
- for (i = 0; i < count; i++){
- free (list->list [i].fname);
- list->list [i].fname = 0;
- if (list->list [i].cache != NULL) {
- free (list->list [i].cache);
- list->list [i].cache = NULL;
- }
- }
- }
-
- /* Used to set up a directory list when there is no access to a directory */
- int set_zero_dir (dir_list *list)
- {
- char buffer [MC_MAXPATHLEN + MC_MAXPATHLEN];
- char *p, *s;
- int i = 0;
-
- (list->list) [0].fname = strdup ("..");
- (list->list) [0].cache = NULL;
-
- /* FIXME: We need to get the panel definition! to use file_mark */
- (list->list) [0].f.marked = 0;
- mc_get_current_wd (buffer, sizeof (buffer) - 1 );
- if (buffer [strlen (buffer) - 1] == PATH_SEP)
- buffer [strlen (buffer) - 1] = 0;
- for (;;) {
- strcat (buffer, PATH_SEP_STR "..");
- p = vfs_canon (buffer);
- if (mc_stat (p, &((list->list) [0].buf)) != -1){
- free (p);
- break;
- }
- i = 1;
- if ((s = vfs_path (p)) && !strcmp (s, PATH_SEP_STR)){
- free (p);
- return 1;
- }
- strcpy (buffer, p);
- free (p);
- }
- if (i) { /* So there is bogus information on the .. directory's stat */
- (list->list) [0].buf.st_mode &= ~0444;
- }
- return 1;
- }
-
- /* Return values: -1 = failure, 0 = don't add, 1 = add to the list */
- int handle_dirent (dir_list *list, char *filter, struct dirent *dp,
- struct stat *buf1, int next_free, int *link_to_dir,
- int *stalled_link)
- {
- if (dp->d_name [0] == '.' && dp->d_name [1] == 0)
- return 0;
- if (!show_dot_files){
- if (dp->d_name [0] == '.'){
- if (!(dp->d_name [1] == 0))
- if (!(dp->d_name [1] == '.' && NLENGTH (dp) == 2))
- return 0;
- }
- }
- if (!show_backups && dp->d_name [NLENGTH (dp)-1] == '~')
- return 0;
- if (mc_lstat (dp->d_name, buf1) == -1)
- return 0;
-
- if (S_ISDIR (buf1->st_mode))
- tree_check (dp->d_name);
-
- /* A link to a file or a directory? */
- *link_to_dir = 0;
- *stalled_link = 0;
- if (S_ISLNK(buf1->st_mode)){
- struct stat buf2;
- if (!mc_stat (dp->d_name, &buf2))
- *link_to_dir = S_ISDIR(buf2.st_mode) != 0;
- else
- *stalled_link = 1;
- }
- if (!(S_ISDIR(buf1->st_mode) || *link_to_dir) && filter &&
- !regexp_match (filter, dp->d_name, match_file))
- return 0;
-
- /* Need to grow the *list? */
- if (next_free == list->size){
- list->list = realloc (list->list, sizeof (file_entry) *
- (list->size + RESIZE_STEPS));
- if (!list->list)
- return -1;
- list->size += RESIZE_STEPS;
- }
- return 1;
- }
-
- int do_load_dir(dir_list *list, sortfn *sort, int reverse, int case_sensitive, char *filter)
- {
- DIR *dirp;
- struct dirent *dp;
- int status, link_to_dir, stalled_link;
- int next_free = 0;
- struct stat buf;
-
- start_tree_check (NULL);
-
- dirp = mc_opendir (".");
- if (!dirp){
- return set_zero_dir (list);
- }
- for (dp = mc_readdir (dirp); dp; dp = mc_readdir (dirp)){
- status = handle_dirent (list, filter, dp, &buf, next_free, &link_to_dir,
- &stalled_link);
- if (status == 0)
- continue;
- if (status == -1)
- return next_free;
- list->list [next_free].fnamelen = NLENGTH (dp);
- list->list [next_free].fname = strdup (dp->d_name);
- list->list [next_free].cache = NULL;
- list->list [next_free].f.marked = 0;
- list->list [next_free].f.link_to_dir = link_to_dir;
- list->list [next_free].f.stalled_link = stalled_link;
- list->list [next_free].buf = buf;
- next_free++;
- if (!(next_free % 32))
- rotate_dash ();
- }
- if (next_free)
- do_sort (list, sort, next_free-1, reverse, case_sensitive);
- else
- return set_zero_dir (list);
-
- mc_closedir (dirp);
- end_tree_check (NULL);
- return next_free;
- }
-
- int link_isdir (file_entry *file)
- {
- struct stat b;
-
- if (S_ISLNK (file->buf.st_mode)){
- mc_stat (file->fname, &b);
- if (S_ISDIR (b.st_mode))
- return 1;
- }
- return 0;
- }
-
- int if_link_is_exe (file_entry *file)
- {
- struct stat b;
-
- if (S_ISLNK (file->buf.st_mode)){
- mc_stat (file->fname, &b);
- return is_exe (b.st_mode);
- }
- return 1;
- }
-
- static dir_list dir_copy = { 0, 0 };
-
- static void alloc_dir_copy (int size)
- {
- int i;
-
- if (dir_copy.size < size){
- if (dir_copy.list){
-
- for (i = 0; i < dir_copy.size; i++) {
- if (dir_copy.list [i].fname)
- free (dir_copy.list [i].fname);
- if (dir_copy.list [i].cache)
- free (dir_copy.list [i].cache);
- }
- free (dir_copy.list);
- dir_copy.list = 0;
- }
-
- dir_copy.list = xmalloc (sizeof (file_entry) * size, "alloc_dir_copy");
- for (i = 0; i < size; i++) {
- dir_copy.list [i].fname = 0;
- dir_copy.list [i].cache = NULL;
- }
- dir_copy.size = size;
- }
- }
-
- /* If filter is null, then it is a match */
- int do_reload_dir (dir_list *list, sortfn *sort, int count, int rev,
- int case_sensitive, char *filter)
- {
- DIR *dirp;
- struct dirent *dp;
- int next_free = 0;
- int i, found, status, link_to_dir, stalled_link;
- struct stat buf;
- int tmp_len; /* For optimisation */
-
- start_tree_check (NULL);
- dirp = mc_opendir (".");
- if (!dirp)
- return set_zero_dir (list);
-
- alloc_dir_copy (list->size);
- for (i = 0; i < count; i++){
- dir_copy.list [i].fnamelen = list->list [i].fnamelen;
- dir_copy.list [i].fname = list->list [i].fname;
- dir_copy.list [i].cache = list->list [i].cache;
- dir_copy.list [i].f.marked = list->list [i].f.marked;
- dir_copy.list [i].f.link_to_dir = list->list [i].f.link_to_dir;
- dir_copy.list [i].f.stalled_link = list->list [i].f.stalled_link;
- }
-
- for (dp = mc_readdir (dirp); dp; dp = mc_readdir (dirp)){
- status = handle_dirent (list, filter, dp, &buf, next_free, &link_to_dir,
- &stalled_link);
- if (status == 0)
- continue;
- if (status == -1)
- return next_free;
-
- tmp_len = NLENGTH (dp);
- for (found = i = 0; i < count; i++)
- if (tmp_len == dir_copy.list [i].fnamelen
- && !strcmp (dp->d_name, dir_copy.list [i].fname)){
- list->list [next_free].f.marked = dir_copy.list [i].f.marked;
- found = 1;
- break;
- }
-
- if (!found)
- list->list [next_free].f.marked = 0;
-
- list->list [next_free].fnamelen = tmp_len;
- list->list [next_free].fname = strdup (dp->d_name);
- list->list [next_free].cache = NULL;
- list->list [next_free].f.link_to_dir = link_to_dir;
- list->list [next_free].f.stalled_link = stalled_link;
- list->list [next_free].buf = buf;
- next_free++;
- if (!(next_free % 16))
- rotate_dash ();
- }
- mc_closedir (dirp);
- end_tree_check (NULL);
- if (next_free)
- do_sort (list, sort, next_free-1, rev, case_sensitive);
- else
- next_free = set_zero_dir (list);
- clean_dir (&dir_copy, count);
- return next_free;
- }
-
- char *sort_type_to_name (sortfn *sort_fn)
- {
- int i;
-
- for (i = 0; i < SORT_TYPES; i++)
- if ((sortfn *) (sort_orders [i].sort_fn) == sort_fn)
- return sort_orders [i].sort_name;
-
- return "Unknown";
- }
-
- sortfn *sort_name_to_type (char *sname)
- {
- int i;
-
- for (i = 0; i < SORT_TYPES; i++)
- if (strcasecmp (sort_orders [i].sort_name, sname) == 0)
- return (sortfn *) sort_orders [i].sort_fn;
-
- /* default case */
- return (sortfn *) sort_name;
- }
-
-