2aebbf8460
Remember the modification time of each directory. This is important for archives (which are virtual directories right now), but may also be useful for an automatic update mechanism.
123 lines
3.4 KiB
C
123 lines
3.4 KiB
C
/* the Music Player Daemon (MPD)
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* Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
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* This project's homepage is: http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "directory_save.h"
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#include "directory.h"
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#include "song.h"
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#include "log.h"
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#include "path.h"
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#include "song_save.h"
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#include <glib.h>
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#include <assert.h>
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#include <string.h>
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#define DIRECTORY_MTIME "mtime: "
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#define DIRECTORY_BEGIN "begin: "
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#define DIRECTORY_END "end: "
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/* TODO error checking */
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int
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directory_save(FILE *fp, struct directory *directory)
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{
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struct dirvec *children = &directory->children;
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size_t i;
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int retv;
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if (!directory_is_root(directory)) {
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fprintf(fp, DIRECTORY_MTIME "%lu\n",
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(unsigned long)directory->mtime);
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retv = fprintf(fp, "%s%s\n", DIRECTORY_BEGIN,
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directory_get_path(directory));
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if (retv < 0)
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return -1;
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}
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for (i = 0; i < children->nr; ++i) {
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struct directory *cur = children->base[i];
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char *base = g_path_get_basename(cur->path);
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retv = fprintf(fp, DIRECTORY_DIR "%s\n", base);
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g_free(base);
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if (retv < 0)
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return -1;
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if (directory_save(fp, cur) < 0)
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return -1;
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}
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songvec_save(fp, &directory->songs);
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if (!directory_is_root(directory) &&
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fprintf(fp, DIRECTORY_END "%s\n",
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directory_get_path(directory)) < 0)
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return -1;
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return 0;
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}
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void
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directory_load(FILE *fp, struct directory *directory)
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{
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char buffer[MPD_PATH_MAX * 2];
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char key[MPD_PATH_MAX * 2];
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char *name;
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while (fgets(buffer, sizeof(buffer), fp)
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&& !g_str_has_prefix(buffer, DIRECTORY_END)) {
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if (g_str_has_prefix(buffer, DIRECTORY_DIR)) {
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struct directory *subdir;
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g_strchomp(buffer);
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strcpy(key, &(buffer[strlen(DIRECTORY_DIR)]));
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if (!fgets(buffer, sizeof(buffer), fp))
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FATAL("Error reading db, fgets\n");
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if (g_str_has_prefix(buffer, DIRECTORY_MTIME)) {
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directory->mtime =
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g_ascii_strtoull(buffer + sizeof(DIRECTORY_MTIME) - 1,
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NULL, 10);
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if (!fgets(buffer, sizeof(buffer), fp))
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FATAL("Error reading db, fgets\n");
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}
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if (!g_str_has_prefix(buffer, DIRECTORY_BEGIN))
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FATAL("Error reading db at line: %s\n", buffer);
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g_strchomp(buffer);
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name = &(buffer[strlen(DIRECTORY_BEGIN)]);
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if (!g_str_has_prefix(name, directory->path) != 0)
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FATAL("Wrong path in database: '%s' in '%s'\n",
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name, directory->path);
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subdir = directory_get_child(directory, name);
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if (subdir != NULL) {
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assert(subdir->parent == directory);
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} else {
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subdir = directory_new(name, directory);
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dirvec_add(&directory->children, subdir);
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}
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directory_load(fp, subdir);
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} else if (g_str_has_prefix(buffer, SONG_BEGIN)) {
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readSongInfoIntoList(fp, &directory->songs, directory);
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} else {
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FATAL("Unknown line in db: %s\n", buffer);
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}
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}
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}
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