diff options
Diffstat (limited to 'src/db/plugins')
-rw-r--r-- | src/db/plugins/simple/DatabaseSave.cxx | 159 | ||||
-rw-r--r-- | src/db/plugins/simple/DatabaseSave.hxx | 35 | ||||
-rw-r--r-- | src/db/plugins/simple/Directory.cxx | 291 | ||||
-rw-r--r-- | src/db/plugins/simple/Directory.hxx | 239 | ||||
-rw-r--r-- | src/db/plugins/simple/DirectorySave.cxx | 207 | ||||
-rw-r--r-- | src/db/plugins/simple/DirectorySave.hxx | 35 | ||||
-rw-r--r-- | src/db/plugins/simple/SimpleDatabasePlugin.cxx (renamed from src/db/plugins/SimpleDatabasePlugin.cxx) | 6 | ||||
-rw-r--r-- | src/db/plugins/simple/SimpleDatabasePlugin.hxx (renamed from src/db/plugins/SimpleDatabasePlugin.hxx) | 0 | ||||
-rw-r--r-- | src/db/plugins/simple/Song.cxx | 111 | ||||
-rw-r--r-- | src/db/plugins/simple/Song.hxx | 113 | ||||
-rw-r--r-- | src/db/plugins/simple/SongSort.cxx | 113 | ||||
-rw-r--r-- | src/db/plugins/simple/SongSort.hxx | 28 |
12 files changed, 1334 insertions, 3 deletions
diff --git a/src/db/plugins/simple/DatabaseSave.cxx b/src/db/plugins/simple/DatabaseSave.cxx new file mode 100644 index 000000000..62034a0b8 --- /dev/null +++ b/src/db/plugins/simple/DatabaseSave.cxx @@ -0,0 +1,159 @@ +/* + * Copyright (C) 2003-2014 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 "config.h" +#include "DatabaseSave.hxx" +#include "db/DatabaseLock.hxx" +#include "db/DatabaseError.hxx" +#include "Directory.hxx" +#include "DirectorySave.hxx" +#include "fs/TextFile.hxx" +#include "tag/Tag.hxx" +#include "tag/TagSettings.h" +#include "fs/Charset.hxx" +#include "util/StringUtil.hxx" +#include "util/Error.hxx" +#include "Log.hxx" + +#include <string.h> +#include <stdlib.h> + +#define DIRECTORY_INFO_BEGIN "info_begin" +#define DIRECTORY_INFO_END "info_end" +#define DB_FORMAT_PREFIX "format: " +#define DIRECTORY_MPD_VERSION "mpd_version: " +#define DIRECTORY_FS_CHARSET "fs_charset: " +#define DB_TAG_PREFIX "tag: " + +static constexpr unsigned DB_FORMAT = 2; + +/** + * The oldest database format understood by this MPD version. + */ +static constexpr unsigned OLDEST_DB_FORMAT = 1; + +void +db_save_internal(FILE *fp, const Directory &music_root) +{ + fprintf(fp, "%s\n", DIRECTORY_INFO_BEGIN); + fprintf(fp, DB_FORMAT_PREFIX "%u\n", DB_FORMAT); + fprintf(fp, "%s%s\n", DIRECTORY_MPD_VERSION, VERSION); + fprintf(fp, "%s%s\n", DIRECTORY_FS_CHARSET, GetFSCharset()); + + for (unsigned i = 0; i < TAG_NUM_OF_ITEM_TYPES; ++i) + if (!ignore_tag_items[i]) + fprintf(fp, DB_TAG_PREFIX "%s\n", tag_item_names[i]); + + fprintf(fp, "%s\n", DIRECTORY_INFO_END); + + directory_save(fp, music_root); +} + +bool +db_load_internal(TextFile &file, Directory &music_root, Error &error) +{ + char *line; + unsigned format = 0; + bool found_charset = false, found_version = false; + bool success; + bool tags[TAG_NUM_OF_ITEM_TYPES]; + + /* get initial info */ + line = file.ReadLine(); + if (line == nullptr || strcmp(DIRECTORY_INFO_BEGIN, line) != 0) { + error.Set(db_domain, "Database corrupted"); + return false; + } + + memset(tags, false, sizeof(tags)); + + while ((line = file.ReadLine()) != nullptr && + strcmp(line, DIRECTORY_INFO_END) != 0) { + if (StringStartsWith(line, DB_FORMAT_PREFIX)) { + format = atoi(line + sizeof(DB_FORMAT_PREFIX) - 1); + } else if (StringStartsWith(line, DIRECTORY_MPD_VERSION)) { + if (found_version) { + error.Set(db_domain, "Duplicate version line"); + return false; + } + + found_version = true; + } else if (StringStartsWith(line, DIRECTORY_FS_CHARSET)) { + const char *new_charset; + + if (found_charset) { + error.Set(db_domain, "Duplicate charset line"); + return false; + } + + found_charset = true; + + new_charset = line + sizeof(DIRECTORY_FS_CHARSET) - 1; + const char *const old_charset = GetFSCharset(); + if (*old_charset != 0 + && strcmp(new_charset, old_charset) != 0) { + error.Format(db_domain, + "Existing database has charset " + "\"%s\" instead of \"%s\"; " + "discarding database file", + new_charset, old_charset); + return false; + } + } else if (StringStartsWith(line, DB_TAG_PREFIX)) { + const char *name = line + sizeof(DB_TAG_PREFIX) - 1; + TagType tag = tag_name_parse(name); + if (tag == TAG_NUM_OF_ITEM_TYPES) { + error.Format(db_domain, + "Unrecognized tag '%s', " + "discarding database file", + name); + return false; + } + + tags[tag] = true; + } else { + error.Format(db_domain, "Malformed line: %s", line); + return false; + } + } + + if (format < OLDEST_DB_FORMAT || format > DB_FORMAT) { + error.Set(db_domain, + "Database format mismatch, " + "discarding database file"); + return false; + } + + for (unsigned i = 0; i < TAG_NUM_OF_ITEM_TYPES; ++i) { + if (!ignore_tag_items[i] && !tags[i]) { + error.Set(db_domain, + "Tag list mismatch, " + "discarding database file"); + return false; + } + } + + LogDebug(db_domain, "reading DB"); + + db_lock(); + success = directory_load(file, music_root, error); + db_unlock(); + + return success; +} diff --git a/src/db/plugins/simple/DatabaseSave.hxx b/src/db/plugins/simple/DatabaseSave.hxx new file mode 100644 index 000000000..3bd3377ae --- /dev/null +++ b/src/db/plugins/simple/DatabaseSave.hxx @@ -0,0 +1,35 @@ +/* + * Copyright (C) 2003-2014 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. + */ + +#ifndef MPD_DATABASE_SAVE_HXX +#define MPD_DATABASE_SAVE_HXX + +#include <stdio.h> + +struct Directory; +class TextFile; +class Error; + +void +db_save_internal(FILE *file, const Directory &root); + +bool +db_load_internal(TextFile &file, Directory &root, Error &error); + +#endif diff --git a/src/db/plugins/simple/Directory.cxx b/src/db/plugins/simple/Directory.cxx new file mode 100644 index 000000000..98262bc52 --- /dev/null +++ b/src/db/plugins/simple/Directory.cxx @@ -0,0 +1,291 @@ +/* + * Copyright (C) 2003-2014 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 "config.h" +#include "Directory.hxx" +#include "SongSort.hxx" +#include "Song.hxx" +#include "db/LightDirectory.hxx" +#include "db/LightSong.hxx" +#include "db/Uri.hxx" +#include "db/DatabaseLock.hxx" +#include "SongFilter.hxx" +#include "lib/icu/Collate.hxx" +#include "fs/Traits.hxx" +#include "util/Alloc.hxx" +#include "util/Error.hxx" + +extern "C" { +#include "util/list_sort.h" +} + +#include <assert.h> +#include <string.h> +#include <stdlib.h> + +Directory::Directory(std::string &&_path_utf8, Directory *_parent) + :parent(_parent), + mtime(0), have_stat(false), + path(std::move(_path_utf8)) +{ + INIT_LIST_HEAD(&children); + INIT_LIST_HEAD(&songs); +} + +Directory::~Directory() +{ + Song *song, *ns; + directory_for_each_song_safe(song, ns, *this) + song->Free(); + + Directory *child, *n; + directory_for_each_child_safe(child, n, *this) + delete child; +} + +void +Directory::Delete() +{ + assert(holding_db_lock()); + assert(parent != nullptr); + + list_del(&siblings); + delete this; +} + +const char * +Directory::GetName() const +{ + assert(!IsRoot()); + + return PathTraitsUTF8::GetBase(path.c_str()); +} + +Directory * +Directory::CreateChild(const char *name_utf8) +{ + assert(holding_db_lock()); + assert(name_utf8 != nullptr); + assert(*name_utf8 != 0); + + std::string path_utf8 = IsRoot() + ? std::string(name_utf8) + : PathTraitsUTF8::Build(GetPath(), name_utf8); + + Directory *child = new Directory(std::move(path_utf8), this); + list_add_tail(&child->siblings, &children); + return child; +} + +const Directory * +Directory::FindChild(const char *name) const +{ + assert(holding_db_lock()); + + const Directory *child; + directory_for_each_child(child, *this) + if (strcmp(child->GetName(), name) == 0) + return child; + + return nullptr; +} + +void +Directory::PruneEmpty() +{ + assert(holding_db_lock()); + + Directory *child, *n; + directory_for_each_child_safe(child, n, *this) { + child->PruneEmpty(); + + if (child->IsEmpty()) + child->Delete(); + } +} + +Directory * +Directory::LookupDirectory(const char *uri) +{ + assert(holding_db_lock()); + assert(uri != nullptr); + + if (isRootDirectory(uri)) + return this; + + char *duplicated = xstrdup(uri), *name = duplicated; + + Directory *d = this; + while (1) { + char *slash = strchr(name, '/'); + if (slash == name) { + d = nullptr; + break; + } + + if (slash != nullptr) + *slash = '\0'; + + d = d->FindChild(name); + if (d == nullptr || slash == nullptr) + break; + + name = slash + 1; + } + + free(duplicated); + + return d; +} + +void +Directory::AddSong(Song *song) +{ + assert(holding_db_lock()); + assert(song != nullptr); + assert(song->parent == this); + + list_add_tail(&song->siblings, &songs); +} + +void +Directory::RemoveSong(Song *song) +{ + assert(holding_db_lock()); + assert(song != nullptr); + assert(song->parent == this); + + list_del(&song->siblings); +} + +const Song * +Directory::FindSong(const char *name_utf8) const +{ + assert(holding_db_lock()); + assert(name_utf8 != nullptr); + + Song *song; + directory_for_each_song(song, *this) { + assert(song->parent == this); + + if (strcmp(song->uri, name_utf8) == 0) + return song; + } + + return nullptr; +} + +Song * +Directory::LookupSong(const char *uri) +{ + char *duplicated, *base; + + assert(holding_db_lock()); + assert(uri != nullptr); + + duplicated = xstrdup(uri); + base = strrchr(duplicated, '/'); + + Directory *d = this; + if (base != nullptr) { + *base++ = 0; + d = d->LookupDirectory(duplicated); + if (d == nullptr) { + free(duplicated); + return nullptr; + } + } else + base = duplicated; + + Song *song = d->FindSong(base); + assert(song == nullptr || song->parent == d); + + free(duplicated); + return song; + +} + +static int +directory_cmp(gcc_unused void *priv, + struct list_head *_a, struct list_head *_b) +{ + const Directory *a = (const Directory *)_a; + const Directory *b = (const Directory *)_b; + + return IcuCollate(a->path.c_str(), b->path.c_str()); +} + +void +Directory::Sort() +{ + assert(holding_db_lock()); + + list_sort(nullptr, &children, directory_cmp); + song_list_sort(&songs); + + Directory *child; + directory_for_each_child(child, *this) + child->Sort(); +} + +bool +Directory::Walk(bool recursive, const SongFilter *filter, + VisitDirectory visit_directory, VisitSong visit_song, + VisitPlaylist visit_playlist, + Error &error) const +{ + assert(!error.IsDefined()); + + if (visit_song) { + Song *song; + directory_for_each_song(song, *this) { + const LightSong song2 = song->Export(); + if ((filter == nullptr || filter->Match(song2)) && + !visit_song(song2, error)) + return false; + } + } + + if (visit_playlist) { + for (const PlaylistInfo &p : playlists) + if (!visit_playlist(p, Export(), error)) + return false; + } + + Directory *child; + directory_for_each_child(child, *this) { + if (visit_directory && + !visit_directory(child->Export(), error)) + return false; + + if (recursive && + !child->Walk(recursive, filter, + visit_directory, visit_song, visit_playlist, + error)) + return false; + } + + return true; +} + +LightDirectory +Directory::Export() const +{ + return LightDirectory(GetPath(), mtime); +} diff --git a/src/db/plugins/simple/Directory.hxx b/src/db/plugins/simple/Directory.hxx new file mode 100644 index 000000000..6c60b7ebf --- /dev/null +++ b/src/db/plugins/simple/Directory.hxx @@ -0,0 +1,239 @@ +/* + * Copyright (C) 2003-2014 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. + */ + +#ifndef MPD_DIRECTORY_HXX +#define MPD_DIRECTORY_HXX + +#include "check.h" +#include "util/list.h" +#include "Compiler.h" +#include "db/Visitor.hxx" +#include "db/PlaylistVector.hxx" + +#include <string> + +static constexpr unsigned DEVICE_INARCHIVE = -1; +static constexpr unsigned DEVICE_CONTAINER = -2; + +#define directory_for_each_child(pos, directory) \ + list_for_each_entry(pos, &(directory).children, siblings) + +#define directory_for_each_child_safe(pos, n, directory) \ + list_for_each_entry_safe(pos, n, &(directory).children, siblings) + +#define directory_for_each_song(pos, directory) \ + list_for_each_entry(pos, &(directory).songs, siblings) + +#define directory_for_each_song_safe(pos, n, directory) \ + list_for_each_entry_safe(pos, n, &(directory).songs, siblings) + +struct Song; +struct db_visitor; +class SongFilter; +class Error; + +struct Directory { + /** + * Pointers to the siblings of this directory within the + * parent directory. It is unused (undefined) in the root + * directory. + * + * This attribute is protected with the global #db_mutex. + * Read access in the update thread does not need protection. + */ + struct list_head siblings; + + /** + * A doubly linked list of child directories. + * + * This attribute is protected with the global #db_mutex. + * Read access in the update thread does not need protection. + */ + struct list_head children; + + /** + * A doubly linked list of songs within this directory. + * + * This attribute is protected with the global #db_mutex. + * Read access in the update thread does not need protection. + */ + struct list_head songs; + + PlaylistVector playlists; + + Directory *parent; + time_t mtime; + unsigned inode, device; + bool have_stat; /* not needed if ino_t == dev_t == 0 is impossible */ + + std::string path; + +public: + Directory(std::string &&_path_utf8, Directory *_parent); + ~Directory(); + + /** + * Create a new root #Directory object. + */ + gcc_malloc + static Directory *NewRoot() { + return new Directory(std::string(), nullptr); + } + + /** + * Remove this #Directory object from its parent and free it. This + * must not be called with the root Directory. + * + * Caller must lock the #db_mutex. + */ + void Delete(); + + /** + * Create a new #Directory object as a child of the given one. + * + * Caller must lock the #db_mutex. + * + * @param name_utf8 the UTF-8 encoded name of the new sub directory + */ + gcc_malloc + Directory *CreateChild(const char *name_utf8); + + /** + * Caller must lock the #db_mutex. + */ + gcc_pure + const Directory *FindChild(const char *name) const; + + gcc_pure + Directory *FindChild(const char *name) { + const Directory *cthis = this; + return const_cast<Directory *>(cthis->FindChild(name)); + } + + /** + * Look up a sub directory, and create the object if it does not + * exist. + * + * Caller must lock the #db_mutex. + */ + Directory *MakeChild(const char *name_utf8) { + Directory *child = FindChild(name_utf8); + if (child == nullptr) + child = CreateChild(name_utf8); + return child; + } + + /** + * Looks up a directory by its relative URI. + * + * @param uri the relative URI + * @return the Directory, or nullptr if none was found + */ + gcc_pure + Directory *LookupDirectory(const char *uri); + + gcc_pure + bool IsEmpty() const { + return list_empty(&children) && + list_empty(&songs) && + playlists.empty(); + } + + gcc_pure + const char *GetPath() const { + return path.c_str(); + } + + /** + * Returns the base name of the directory. + */ + gcc_pure + const char *GetName() const; + + /** + * Is this the root directory of the music database? + */ + gcc_pure + bool IsRoot() const { + return parent == nullptr; + } + + /** + * Look up a song in this directory by its name. + * + * Caller must lock the #db_mutex. + */ + gcc_pure + const Song *FindSong(const char *name_utf8) const; + + gcc_pure + Song *FindSong(const char *name_utf8) { + const Directory *cthis = this; + return const_cast<Song *>(cthis->FindSong(name_utf8)); + } + + /** + * Looks up a song by its relative URI. + * + * Caller must lock the #db_mutex. + * + * @param uri the relative URI + * @return the song, or nullptr if none was found + */ + gcc_pure + Song *LookupSong(const char *uri); + + /** + * Add a song object to this directory. Its "parent" attribute must + * be set already. + */ + void AddSong(Song *song); + + /** + * Remove a song object from this directory (which effectively + * invalidates the song object, because the "parent" attribute becomes + * stale), but does not free it. + */ + void RemoveSong(Song *song); + + /** + * Caller must lock the #db_mutex. + */ + void PruneEmpty(); + + /** + * Sort all directory entries recursively. + * + * Caller must lock the #db_mutex. + */ + void Sort(); + + /** + * Caller must lock #db_mutex. + */ + bool Walk(bool recursive, const SongFilter *match, + VisitDirectory visit_directory, VisitSong visit_song, + VisitPlaylist visit_playlist, + Error &error) const; + + gcc_pure + LightDirectory Export() const; +}; + +#endif diff --git a/src/db/plugins/simple/DirectorySave.cxx b/src/db/plugins/simple/DirectorySave.cxx new file mode 100644 index 000000000..6cc5df6cb --- /dev/null +++ b/src/db/plugins/simple/DirectorySave.cxx @@ -0,0 +1,207 @@ +/* + * Copyright (C) 2003-2014 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 "config.h" +#include "DirectorySave.hxx" +#include "Directory.hxx" +#include "Song.hxx" +#include "SongSave.hxx" +#include "DetachedSong.hxx" +#include "PlaylistDatabase.hxx" +#include "fs/TextFile.hxx" +#include "util/StringUtil.hxx" +#include "util/NumberParser.hxx" +#include "util/Error.hxx" +#include "util/Domain.hxx" + +#include <stddef.h> +#include <string.h> + +#define DIRECTORY_DIR "directory: " +#define DIRECTORY_TYPE "type: " +#define DIRECTORY_MTIME "mtime: " +#define DIRECTORY_BEGIN "begin: " +#define DIRECTORY_END "end: " + +static constexpr Domain directory_domain("directory"); + +gcc_const +static const char * +DeviceToTypeString(unsigned device) +{ + switch (device) { + case DEVICE_INARCHIVE: + return "archive"; + + case DEVICE_CONTAINER: + return "container"; + + default: + return nullptr; + } +} + +gcc_pure +static unsigned +ParseTypeString(const char *type) +{ + if (strcmp(type, "archive") == 0) + return DEVICE_INARCHIVE; + else if (strcmp(type, "container") == 0) + return DEVICE_CONTAINER; + else + return 0; +} + +void +directory_save(FILE *fp, const Directory &directory) +{ + if (!directory.IsRoot()) { + const char *type = DeviceToTypeString(directory.device); + if (type != nullptr) + fprintf(fp, DIRECTORY_TYPE "%s\n", type); + + if (directory.mtime != 0) + fprintf(fp, DIRECTORY_MTIME "%lu\n", + (unsigned long)directory.mtime); + + fprintf(fp, "%s%s\n", DIRECTORY_BEGIN, directory.GetPath()); + } + + Directory *cur; + directory_for_each_child(cur, directory) { + fprintf(fp, DIRECTORY_DIR "%s\n", cur->GetName()); + + directory_save(fp, *cur); + + if (ferror(fp)) + return; + } + + Song *song; + directory_for_each_song(song, directory) + song_save(fp, *song); + + playlist_vector_save(fp, directory.playlists); + + if (!directory.IsRoot()) + fprintf(fp, DIRECTORY_END "%s\n", directory.GetPath()); +} + +static bool +ParseLine(Directory &directory, const char *line) +{ + if (StringStartsWith(line, DIRECTORY_MTIME)) { + directory.mtime = + ParseUint64(line + sizeof(DIRECTORY_MTIME) - 1); + } else if (StringStartsWith(line, DIRECTORY_TYPE)) { + directory.device = + ParseTypeString(line + sizeof(DIRECTORY_TYPE) - 1); + } else + return false; + + return true; +} + +static Directory * +directory_load_subdir(TextFile &file, Directory &parent, const char *name, + Error &error) +{ + bool success; + + if (parent.FindChild(name) != nullptr) { + error.Format(directory_domain, + "Duplicate subdirectory '%s'", name); + return nullptr; + } + + Directory *directory = parent.CreateChild(name); + + while (true) { + const char *line = file.ReadLine(); + if (line == nullptr) { + error.Set(directory_domain, "Unexpected end of file"); + directory->Delete(); + return nullptr; + } + + if (StringStartsWith(line, DIRECTORY_BEGIN)) + break; + + if (!ParseLine(*directory, line)) { + error.Format(directory_domain, + "Malformed line: %s", line); + directory->Delete(); + return nullptr; + } + } + + success = directory_load(file, *directory, error); + if (!success) { + directory->Delete(); + return nullptr; + } + + return directory; +} + +bool +directory_load(TextFile &file, Directory &directory, Error &error) +{ + const char *line; + + while ((line = file.ReadLine()) != nullptr && + !StringStartsWith(line, DIRECTORY_END)) { + if (StringStartsWith(line, DIRECTORY_DIR)) { + Directory *subdir = + directory_load_subdir(file, directory, + line + sizeof(DIRECTORY_DIR) - 1, + error); + if (subdir == nullptr) + return false; + } else if (StringStartsWith(line, SONG_BEGIN)) { + const char *name = line + sizeof(SONG_BEGIN) - 1; + + if (directory.FindSong(name) != nullptr) { + error.Format(directory_domain, + "Duplicate song '%s'", name); + return false; + } + + DetachedSong *song = song_load(file, name, error); + if (song == nullptr) + return false; + + directory.AddSong(Song::NewFrom(std::move(*song), + directory)); + delete song; + } else if (StringStartsWith(line, PLAYLIST_META_BEGIN)) { + const char *name = line + sizeof(PLAYLIST_META_BEGIN) - 1; + if (!playlist_metadata_load(file, directory.playlists, + name, error)) + return false; + } else { + error.Format(directory_domain, + "Malformed line: %s", line); + return false; + } + } + + return true; +} diff --git a/src/db/plugins/simple/DirectorySave.hxx b/src/db/plugins/simple/DirectorySave.hxx new file mode 100644 index 000000000..07e9e158b --- /dev/null +++ b/src/db/plugins/simple/DirectorySave.hxx @@ -0,0 +1,35 @@ +/* + * Copyright (C) 2003-2014 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. + */ + +#ifndef MPD_DIRECTORY_SAVE_HXX +#define MPD_DIRECTORY_SAVE_HXX + +#include <stdio.h> + +struct Directory; +class TextFile; +class Error; + +void +directory_save(FILE *fp, const Directory &directory); + +bool +directory_load(TextFile &file, Directory &directory, Error &error); + +#endif diff --git a/src/db/plugins/SimpleDatabasePlugin.cxx b/src/db/plugins/simple/SimpleDatabasePlugin.cxx index ceb191818..9911caa66 100644 --- a/src/db/plugins/SimpleDatabasePlugin.cxx +++ b/src/db/plugins/simple/SimpleDatabasePlugin.cxx @@ -23,10 +23,10 @@ #include "db/Selection.hxx" #include "db/Helpers.hxx" #include "db/LightDirectory.hxx" -#include "db/Directory.hxx" -#include "db/Song.hxx" +#include "Directory.hxx" +#include "Song.hxx" #include "SongFilter.hxx" -#include "db/DatabaseSave.hxx" +#include "DatabaseSave.hxx" #include "db/DatabaseLock.hxx" #include "db/DatabaseError.hxx" #include "fs/TextFile.hxx" diff --git a/src/db/plugins/SimpleDatabasePlugin.hxx b/src/db/plugins/simple/SimpleDatabasePlugin.hxx index 40d870460..40d870460 100644 --- a/src/db/plugins/SimpleDatabasePlugin.hxx +++ b/src/db/plugins/simple/SimpleDatabasePlugin.hxx diff --git a/src/db/plugins/simple/Song.cxx b/src/db/plugins/simple/Song.cxx new file mode 100644 index 000000000..3bd3d8316 --- /dev/null +++ b/src/db/plugins/simple/Song.cxx @@ -0,0 +1,111 @@ +/* + * Copyright (C) 2003-2014 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 "config.h" +#include "Song.hxx" +#include "Directory.hxx" +#include "tag/Tag.hxx" +#include "util/VarSize.hxx" +#include "DetachedSong.hxx" +#include "db/LightSong.hxx" + +#include <assert.h> +#include <string.h> +#include <stdlib.h> + +inline Song::Song(const char *_uri, size_t uri_length, Directory &_parent) + :parent(&_parent), mtime(0), start_ms(0), end_ms(0) +{ + memcpy(uri, _uri, uri_length + 1); +} + +inline Song::~Song() +{ +} + +static Song * +song_alloc(const char *uri, Directory &parent) +{ + size_t uri_length; + + assert(uri); + uri_length = strlen(uri); + assert(uri_length); + + return NewVarSize<Song>(sizeof(Song::uri), + uri_length + 1, + uri, uri_length, parent); +} + +Song * +Song::NewFrom(DetachedSong &&other, Directory &parent) +{ + Song *song = song_alloc(other.GetURI(), parent); + song->tag = std::move(other.WritableTag()); + song->mtime = other.GetLastModified(); + song->start_ms = other.GetStartMS(); + song->end_ms = other.GetEndMS(); + return song; +} + +Song * +Song::NewFile(const char *path, Directory &parent) +{ + return song_alloc(path, parent); +} + +void +Song::Free() +{ + DeleteVarSize(this); +} + +std::string +Song::GetURI() const +{ + assert(*uri); + + if (parent->IsRoot()) + return std::string(uri); + else { + const char *path = parent->GetPath(); + + std::string result; + result.reserve(strlen(path) + 1 + strlen(uri)); + result.assign(path); + result.push_back('/'); + result.append(uri); + return result; + } +} + +LightSong +Song::Export() const +{ + LightSong dest; + dest.directory = parent->IsRoot() + ? nullptr : parent->GetPath(); + dest.uri = uri; + dest.real_uri = nullptr; + dest.tag = &tag; + dest.mtime = mtime; + dest.start_ms = start_ms; + dest.end_ms = end_ms; + return dest; +} diff --git a/src/db/plugins/simple/Song.hxx b/src/db/plugins/simple/Song.hxx new file mode 100644 index 000000000..75fce20e9 --- /dev/null +++ b/src/db/plugins/simple/Song.hxx @@ -0,0 +1,113 @@ +/* + * Copyright (C) 2003-2014 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. + */ + +#ifndef MPD_SONG_HXX +#define MPD_SONG_HXX + +#include "util/list.h" +#include "tag/Tag.hxx" +#include "Compiler.h" + +#include <string> + +#include <assert.h> +#include <time.h> + +struct LightSong; +struct Directory; +class DetachedSong; +class Storage; + +/** + * A song file inside the configured music directory. Internal + * #SimpleDatabase class. + */ +struct Song { + /** + * Pointers to the siblings of this directory within the + * parent directory. It is unused (undefined) if this song is + * not in the database. + * + * This attribute is protected with the global #db_mutex. + * Read access in the update thread does not need protection. + */ + struct list_head siblings; + + Tag tag; + + /** + * The #Directory that contains this song. Must be + * non-nullptr. directory this way. + */ + Directory *const parent; + + time_t mtime; + + /** + * Start of this sub-song within the file in milliseconds. + */ + unsigned start_ms; + + /** + * End of this sub-song within the file in milliseconds. + * Unused if zero. + */ + unsigned end_ms; + + /** + * The file name. + */ + char uri[sizeof(int)]; + + Song(const char *_uri, size_t uri_length, Directory &parent); + ~Song(); + + gcc_malloc + static Song *NewFrom(DetachedSong &&other, Directory &parent); + + /** allocate a new song with a local file name */ + gcc_malloc + static Song *NewFile(const char *path_utf8, Directory &parent); + + /** + * allocate a new song structure with a local file name and attempt to + * load its metadata. If all decoder plugin fail to read its meta + * data, nullptr is returned. + */ + gcc_malloc + static Song *LoadFile(Storage &storage, const char *name_utf8, + Directory &parent); + + void Free(); + + bool UpdateFile(Storage &storage); + bool UpdateFileInArchive(const Storage &storage); + + /** + * Returns the URI of the song in UTF-8 encoding, including its + * location within the music directory. + */ + gcc_pure + std::string GetURI() const; + + gcc_pure + LightSong Export() const; +}; + +#endif diff --git a/src/db/plugins/simple/SongSort.cxx b/src/db/plugins/simple/SongSort.cxx new file mode 100644 index 000000000..c5752f568 --- /dev/null +++ b/src/db/plugins/simple/SongSort.cxx @@ -0,0 +1,113 @@ +/* + * Copyright (C) 2003-2014 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 "config.h" +#include "SongSort.hxx" +#include "Song.hxx" +#include "tag/Tag.hxx" +#include "lib/icu/Collate.hxx" + +extern "C" { +#include "util/list_sort.h" +} + +#include <stdlib.h> + +static int +compare_utf8_string(const char *a, const char *b) +{ + if (a == nullptr) + return b == nullptr ? 0 : -1; + + if (b == nullptr) + return 1; + + return IcuCollate(a, b); +} + +/** + * Compare two string tag values, ignoring case. Either one may be + * nullptr. + */ +static int +compare_string_tag_item(const Tag &a, const Tag &b, + TagType type) +{ + return compare_utf8_string(a.GetValue(type), + b.GetValue(type)); +} + +/** + * Compare two tag values which should contain an integer value + * (e.g. disc or track number). Either one may be nullptr. + */ +static int +compare_number_string(const char *a, const char *b) +{ + long ai = a == nullptr ? 0 : strtol(a, nullptr, 10); + long bi = b == nullptr ? 0 : strtol(b, nullptr, 10); + + if (ai <= 0) + return bi <= 0 ? 0 : -1; + + if (bi <= 0) + return 1; + + return ai - bi; +} + +static int +compare_tag_item(const Tag &a, const Tag &b, TagType type) +{ + return compare_number_string(a.GetValue(type), + b.GetValue(type)); +} + +/* Only used for sorting/searchin a songvec, not general purpose compares */ +static int +song_cmp(gcc_unused void *priv, struct list_head *_a, struct list_head *_b) +{ + const Song *a = (const Song *)_a; + const Song *b = (const Song *)_b; + int ret; + + /* first sort by album */ + ret = compare_string_tag_item(a->tag, b->tag, TAG_ALBUM); + if (ret != 0) + return ret; + + /* then sort by disc */ + ret = compare_tag_item(a->tag, b->tag, TAG_DISC); + if (ret != 0) + return ret; + + /* then by track number */ + ret = compare_tag_item(a->tag, b->tag, TAG_TRACK); + if (ret != 0) + return ret; + + /* still no difference? compare file name */ + return IcuCollate(a->uri, b->uri); +} + +void +song_list_sort(struct list_head *songs) +{ + list_sort(nullptr, songs, song_cmp); +} diff --git a/src/db/plugins/simple/SongSort.hxx b/src/db/plugins/simple/SongSort.hxx new file mode 100644 index 000000000..28b903532 --- /dev/null +++ b/src/db/plugins/simple/SongSort.hxx @@ -0,0 +1,28 @@ +/* + * Copyright (C) 2003-2014 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. + */ + +#ifndef MPD_SONG_SORT_HXX +#define MPD_SONG_SORT_HXX + +struct list_head; + +void +song_list_sort(list_head *songs); + +#endif |