/* * Copyright (C) 2003-2009 The Music Player Daemon Project * http://www.musicpd.org * * 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., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #include "directory_save.h" #include "directory.h" #include "song.h" #include "text_file.h" #include "song_save.h" #include <assert.h> #include <string.h> #define DIRECTORY_MTIME "mtime: " #define DIRECTORY_BEGIN "begin: " #define DIRECTORY_END "end: " /** * The quark used for GError.domain. */ static inline GQuark directory_quark(void) { return g_quark_from_static_string("directory"); } void directory_save(FILE *fp, struct directory *directory) { struct dirvec *children = &directory->children; size_t i; if (!directory_is_root(directory)) { fprintf(fp, DIRECTORY_MTIME "%lu\n", (unsigned long)directory->mtime); fprintf(fp, "%s%s\n", DIRECTORY_BEGIN, directory_get_path(directory)); } for (i = 0; i < children->nr; ++i) { struct directory *cur = children->base[i]; char *base = g_path_get_basename(cur->path); fprintf(fp, DIRECTORY_DIR "%s\n", base); g_free(base); directory_save(fp, cur); if (ferror(fp)) return; } songvec_save(fp, &directory->songs); if (!directory_is_root(directory)) fprintf(fp, DIRECTORY_END "%s\n", directory_get_path(directory)); } static struct directory * directory_load_subdir(FILE *fp, struct directory *parent, const char *name, GString *buffer, GError **error_r) { struct directory *directory; const char *line; bool success; if (directory_get_child(parent, name) != NULL) { g_set_error(error_r, directory_quark(), 0, "Duplicate subdirectory '%s'", name); return NULL; } if (directory_is_root(parent)) { directory = directory_new(name, parent); } else { char *path = g_strconcat(directory_get_path(parent), "/", name, NULL); directory = directory_new(path, parent); g_free(path); } line = read_text_line(fp, buffer); if (line == NULL) { g_set_error(error_r, directory_quark(), 0, "Unexpected end of file"); directory_free(directory); return NULL; } if (g_str_has_prefix(line, DIRECTORY_MTIME)) { directory->mtime = g_ascii_strtoull(line + sizeof(DIRECTORY_MTIME) - 1, NULL, 10); line = read_text_line(fp, buffer); if (line == NULL) { g_set_error(error_r, directory_quark(), 0, "Unexpected end of file"); directory_free(directory); return NULL; } } if (!g_str_has_prefix(line, DIRECTORY_BEGIN)) { g_set_error(error_r, directory_quark(), 0, "Malformed line: %s", line); directory_free(directory); return NULL; } success = directory_load(fp, directory, buffer, error_r); if (!success) { directory_free(directory); return NULL; } return directory; } bool directory_load(FILE *fp, struct directory *directory, GString *buffer, GError **error) { const char *line; while ((line = read_text_line(fp, buffer)) != NULL && !g_str_has_prefix(line, DIRECTORY_END)) { if (g_str_has_prefix(line, DIRECTORY_DIR)) { struct directory *subdir = directory_load_subdir(fp, directory, line + sizeof(DIRECTORY_DIR) - 1, buffer, error); if (subdir == NULL) return false; dirvec_add(&directory->children, subdir); } else if (g_str_has_prefix(line, SONG_BEGIN)) { const char *name = line + sizeof(SONG_BEGIN) - 1; struct song *song; if (songvec_find(&directory->songs, name) != NULL) { g_set_error(error, directory_quark(), 0, "Duplicate song '%s'", name); return NULL; } song = song_load(fp, directory, name, buffer, error); if (song == NULL) return false; songvec_add(&directory->songs, song); } else { g_set_error(error, directory_quark(), 0, "Malformed line: %s", line); return false; } } return true; }