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browser.c
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/*
* Copyright 2008-2013 Various Authors
* Copyright 2004-2005 Timo Hirvonen
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#include "browser.h"
#include "load_dir.h"
#include "cmus.h"
#include "xmalloc.h"
#include "ui_curses.h"
#include "file.h"
#include "misc.h"
#include "options.h"
#include "uchar.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <dirent.h>
#include <string.h>
#include <errno.h>
#include <sys/mman.h>
struct window *browser_win;
struct searchable *browser_searchable;
char *browser_dir;
static LIST_HEAD(browser_head);
static inline void browser_entry_to_iter(struct browser_entry *e, struct iter *iter)
{
iter->data0 = &browser_head;
iter->data1 = e;
iter->data2 = NULL;
}
/* filter out names starting with '.' except '..' */
static int normal_filter(const char *name, const struct stat *s)
{
if (name[0] == '.') {
if (name[1] == '.' && name[2] == 0)
return 1;
return 0;
}
if (S_ISDIR(s->st_mode))
return 1;
return cmus_is_supported(name);
}
/* filter out '.' */
static int hidden_filter(const char *name, const struct stat *s)
{
if (name[0] == '.' && name[1] == 0)
return 0;
return 1;
}
/* only works for BROWSER_ENTRY_DIR and BROWSER_ENTRY_FILE */
static int entry_cmp(const struct browser_entry *a, const struct browser_entry *b)
{
if (a->type == BROWSER_ENTRY_DIR) {
if (b->type == BROWSER_ENTRY_FILE)
return -1;
if (!strcmp(a->name, "../"))
return -1;
if (!strcmp(b->name, "../"))
return 1;
return strcmp(a->name, b->name);
}
if (b->type == BROWSER_ENTRY_DIR)
return 1;
return strcmp(a->name, b->name);
}
static char *fullname(const char *path, const char *name)
{
int l1, l2;
char *full;
l1 = strlen(path);
l2 = strlen(name);
if (path[l1 - 1] == '/')
l1--;
full = xnew(char, l1 + 1 + l2 + 1);
memcpy(full, path, l1);
full[l1] = '/';
memcpy(full + l1 + 1, name, l2 + 1);
return full;
}
static void free_browser_list(void)
{
struct list_head *item;
item = browser_head.next;
while (item != &browser_head) {
struct list_head *next = item->next;
struct browser_entry *entry;
entry = list_entry(item, struct browser_entry, node);
free(entry);
item = next;
}
list_init(&browser_head);
}
static int add_pl_line(void *data, const char *line)
{
struct browser_entry *e;
int name_size = strlen(line) + 1;
e = xmalloc(sizeof(struct browser_entry) + name_size);
memcpy(e->name, line, name_size);
e->type = BROWSER_ENTRY_PLLINE;
list_add_tail(&e->node, &browser_head);
return 0;
}
static int do_browser_load(const char *name)
{
struct stat st;
if (stat(name, &st))
return -1;
if (S_ISREG(st.st_mode) && cmus_is_playlist(name)) {
char *buf;
ssize_t size;
buf = mmap_file(name, &size);
if (size == -1)
return -1;
free_browser_list();
if (buf) {
struct browser_entry *parent_dir_e = xmalloc(sizeof(struct browser_entry) + 4);
strcpy(parent_dir_e->name, "../");
parent_dir_e->type = BROWSER_ENTRY_DIR;
list_add_tail(&parent_dir_e->node, &browser_head);
cmus_playlist_for_each(buf, size, 0, add_pl_line, NULL);
munmap(buf, size);
}
} else if (S_ISDIR(st.st_mode)) {
int (*filter)(const char *, const struct stat *) = normal_filter;
struct directory dir;
const char *str;
int root = !strcmp(name, "/");
if (show_hidden)
filter = hidden_filter;
if (dir_open(&dir, name))
return -1;
free_browser_list();
while ((str = dir_read(&dir))) {
struct browser_entry *e;
struct list_head *item;
int len;
if (!filter(str, &dir.st))
continue;
/* ignore .. if we are in the root dir */
if (root && !strcmp(str, ".."))
continue;
len = strlen(str);
e = xmalloc(sizeof(struct browser_entry) + len + 2);
e->type = BROWSER_ENTRY_FILE;
memcpy(e->name, str, len);
if (S_ISDIR(dir.st.st_mode)) {
e->type = BROWSER_ENTRY_DIR;
e->name[len++] = '/';
}
e->name[len] = 0;
item = browser_head.prev;
while (item != &browser_head) {
struct browser_entry *other;
other = container_of(item, struct browser_entry, node);
if (entry_cmp(e, other) >= 0)
break;
item = item->prev;
}
/* add after item */
list_add(&e->node, item);
}
dir_close(&dir);
/* try to update currect working directory */
if (chdir(name))
return -1;
} else {
errno = ENOTDIR;
return -1;
}
return 0;
}
static int browser_load(const char *name)
{
int rc;
rc = do_browser_load(name);
if (rc)
return rc;
window_set_contents(browser_win, &browser_head);
free(browser_dir);
browser_dir = xstrdup(name);
return 0;
}
static GENERIC_ITER_PREV(browser_get_prev, struct browser_entry, node)
static GENERIC_ITER_NEXT(browser_get_next, struct browser_entry, node)
static int browser_search_get_current(void *data, struct iter *iter)
{
return window_get_sel(browser_win, iter);
}
static int browser_search_matches(void *data, struct iter *iter, const char *text)
{
char **words = get_words(text);
int matched = 0;
if (words[0] != NULL) {
struct browser_entry *e;
int i;
e = iter_to_browser_entry(iter);
for (i = 0; ; i++) {
if (words[i] == NULL) {
window_set_sel(browser_win, iter);
matched = 1;
break;
}
if (u_strcasestr_filename(e->name, words[i]) == NULL)
break;
}
}
free_str_array(words);
return matched;
}
static const struct searchable_ops browser_search_ops = {
.get_prev = browser_get_prev,
.get_next = browser_get_next,
.get_current = browser_search_get_current,
.matches = browser_search_matches
};
void browser_init(void)
{
struct iter iter;
char cwd[1024];
char *dir;
if (getcwd(cwd, sizeof(cwd)) == NULL) {
dir = xstrdup("/");
} else {
dir = xstrdup(cwd);
}
if (do_browser_load(dir)) {
free(dir);
do_browser_load("/");
browser_dir = xstrdup("/");
} else {
browser_dir = dir;
}
browser_win = window_new(browser_get_prev, browser_get_next);
window_set_contents(browser_win, &browser_head);
window_changed(browser_win);
iter.data0 = &browser_head;
iter.data1 = NULL;
iter.data2 = NULL;
browser_searchable = searchable_new(NULL, &iter, &browser_search_ops);
}
void browser_exit(void)
{
searchable_free(browser_searchable);
free_browser_list();
window_free(browser_win);
free(browser_dir);
}
int browser_chdir(const char *dir)
{
if (browser_load(dir)) {
}
return 0;
}
void browser_up(void)
{
char *new, *ptr, *pos;
struct browser_entry *e;
int len;
if (strcmp(browser_dir, "/") == 0)
return;
ptr = strrchr(browser_dir, '/');
if (ptr == browser_dir) {
new = xstrdup("/");
} else {
new = xstrndup(browser_dir, ptr - browser_dir);
}
/* remember old position */
ptr++;
len = strlen(ptr);
pos = xstrdup(ptr);
errno = 0;
if (browser_load(new)) {
if (errno == ENOENT) {
free(pos);
free(browser_dir);
browser_dir = new;
browser_up();
return;
}
error_msg("could not open directory '%s': %s\n", new, strerror(errno));
free(new);
free(pos);
return;
}
free(new);
/* select old position */
list_for_each_entry(e, &browser_head, node) {
if (strncmp(e->name, pos, len) == 0 &&
(e->name[len] == '/' || e->name[len] == '\0')) {
struct iter iter;
browser_entry_to_iter(e, &iter);
window_set_sel(browser_win, &iter);
break;
}
}
free(pos);
}
static void browser_cd(const char *dir)
{
char *new;
int len;
if (strcmp(dir, "../") == 0) {
browser_up();
return;
}
new = fullname(browser_dir, dir);
len = strlen(new);
if (new[len - 1] == '/')
new[len - 1] = 0;
if (browser_load(new))
error_msg("could not open directory '%s': %s\n", dir, strerror(errno));
free(new);
}
static void browser_cd_playlist(const char *filename)
{
if (browser_load(filename))
error_msg("could not read playlist '%s': %s\n", filename, strerror(errno));
}
void browser_enter(void)
{
struct browser_entry *e;
struct iter sel;
int len;
if (!window_get_sel(browser_win, &sel))
return;
e = iter_to_browser_entry(&sel);
len = strlen(e->name);
if (len == 0)
return;
if (e->type == BROWSER_ENTRY_DIR) {
browser_cd(e->name);
} else {
if (e->type == BROWSER_ENTRY_PLLINE) {
cmus_play_file(e->name);
} else {
char *filename;
filename = fullname(browser_dir, e->name);
if (cmus_is_playlist(filename)) {
browser_cd_playlist(filename);
} else {
cmus_play_file(filename);
}
free(filename);
}
}
}
char *browser_get_sel(void)
{
struct browser_entry *e;
struct iter sel;
if (!window_get_sel(browser_win, &sel))
return NULL;
e = iter_to_browser_entry(&sel);
if (e->type == BROWSER_ENTRY_PLLINE)
return xstrdup(e->name);
return fullname(browser_dir, e->name);
}
void browser_delete(void)
{
struct browser_entry *e;
struct iter sel;
int len;
if (!window_get_sel(browser_win, &sel))
return;
e = iter_to_browser_entry(&sel);
len = strlen(e->name);
if (len == 0)
return;
if (e->type == BROWSER_ENTRY_FILE) {
char *name;
name = fullname(browser_dir, e->name);
if (yes_no_query("Delete file '%s'? [y/N]", e->name)) {
if (unlink(name) == -1) {
error_msg("deleting '%s': %s", e->name, strerror(errno));
} else {
window_row_vanishes(browser_win, &sel);
list_del(&e->node);
free(e);
}
}
free(name);
}
}
void browser_reload(void)
{
char *tmp = xstrdup(browser_dir);
char *sel = NULL;
struct iter iter;
struct browser_entry *e;
/* remember selection */
if (window_get_sel(browser_win, &iter)) {
e = iter_to_browser_entry(&iter);
sel = xstrdup(e->name);
}
/* have to use tmp */
if (browser_load(tmp)) {
error_msg("could not update contents '%s': %s\n", tmp, strerror(errno));
free(tmp);
free(sel);
return;
}
if (sel) {
/* set selection */
list_for_each_entry(e, &browser_head, node) {
if (strcmp(e->name, sel) == 0) {
browser_entry_to_iter(e, &iter);
window_set_sel(browser_win, &iter);
break;
}
}
}
free(tmp);
free(sel);
}