db_print: convert to C++
This commit is contained in:
Max Kellermann
330
src/DatabasePrint.cxx
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330
src/DatabasePrint.cxx
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/*
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* Copyright (C) 2003-2012 The Music Player Daemon Project
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* 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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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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extern "C" {
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#include "db_print.h"
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#include "db_selection.h"
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#include "locate.h"
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#include "database.h"
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#include "client.h"
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#include "song.h"
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#include "song_print.h"
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#include "playlist_vector.h"
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#include "tag.h"
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}
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#include "directory.h"
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#include "DatabaseGlue.hxx"
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#include "DatabasePlugin.hxx"
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#include <functional>
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#include <set>
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static bool
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PrintDirectory(struct client *client, const struct directory *directory)
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{
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if (!directory_is_root(directory))
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client_printf(client, "directory: %s\n", directory_get_path(directory));
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return true;
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}
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static void
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print_playlist_in_directory(struct client *client,
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const struct directory *directory,
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const char *name_utf8)
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{
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if (directory_is_root(directory))
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client_printf(client, "playlist: %s\n", name_utf8);
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else
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client_printf(client, "playlist: %s/%s\n",
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directory_get_path(directory), name_utf8);
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}
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static bool
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PrintSongBrief(struct client *client, struct song *song)
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{
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assert(song != NULL);
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assert(song->parent != NULL);
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song_print_uri(client, song);
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if (song->tag != NULL && song->tag->has_playlist)
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/* this song file has an embedded CUE sheet */
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print_playlist_in_directory(client, song->parent,
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song->uri);
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return true;
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}
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static bool
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PrintSongFull(struct client *client, struct song *song)
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{
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assert(song != NULL);
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assert(song->parent != NULL);
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song_print_info(client, song);
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if (song->tag != NULL && song->tag->has_playlist)
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/* this song file has an embedded CUE sheet */
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print_playlist_in_directory(client, song->parent,
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song->uri);
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return true;
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}
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static bool
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PrintPlaylistBrief(struct client *client,
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const struct playlist_metadata *playlist,
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const struct directory *directory)
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{
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print_playlist_in_directory(client, directory, playlist->name);
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return true;
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}
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static bool
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PrintPlaylistFull(struct client *client,
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const struct playlist_metadata *playlist,
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const struct directory *directory)
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{
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print_playlist_in_directory(client, directory, playlist->name);
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#ifndef G_OS_WIN32
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struct tm tm;
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#endif
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char timestamp[32];
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time_t t = playlist->mtime;
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strftime(timestamp, sizeof(timestamp),
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#ifdef G_OS_WIN32
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"%Y-%m-%dT%H:%M:%SZ",
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gmtime(&t)
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#else
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"%FT%TZ",
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gmtime_r(&t, &tm)
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#endif
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);
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client_printf(client, "Last-Modified: %s\n", timestamp);
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return true;
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}
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bool
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db_selection_print(struct client *client, const struct db_selection *selection,
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bool full, GError **error_r)
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{
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using namespace std::placeholders;
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const auto d = std::bind(PrintDirectory, client, _1);
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const auto s = std::bind(full ? PrintSongFull : PrintSongBrief,
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client, _1);
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const auto p = std::bind(full ? PrintPlaylistFull : PrintPlaylistBrief,
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client, _1, _2);
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return GetDatabase()->Visit(selection, d, s, p, error_r);
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}
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static bool
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SearchPrintSong(struct client *client, const struct locate_item_list *criteria,
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struct song *song)
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{
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if (locate_song_search(song, criteria))
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song_print_info(client, song);
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return true;
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}
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bool
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searchForSongsIn(struct client *client, const char *uri,
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const struct locate_item_list *criteria,
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GError **error_r)
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{
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struct db_selection selection;
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db_selection_init(&selection, uri, true);
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struct locate_item_list *new_list
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= locate_item_list_casefold(criteria);
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using namespace std::placeholders;
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const auto f = std::bind(SearchPrintSong, client, new_list, _1);
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bool success = GetDatabase()->Visit(&selection, f, error_r);
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locate_item_list_free(new_list);
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return success;
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}
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static bool
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MatchPrintSong(struct client *client, const struct locate_item_list *criteria,
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struct song *song)
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{
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if (locate_song_match(song, criteria))
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song_print_info(client, song);
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return true;
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}
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bool
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findSongsIn(struct client *client, const char *uri,
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const struct locate_item_list *criteria,
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GError **error_r)
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{
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struct db_selection selection;
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db_selection_init(&selection, uri, true);
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using namespace std::placeholders;
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const auto f = std::bind(MatchPrintSong, client, criteria, _1);
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return GetDatabase()->Visit(&selection, f, error_r);
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}
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struct SearchStats {
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int numberOfSongs;
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unsigned long playTime;
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};
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static void printSearchStats(struct client *client, SearchStats *stats)
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{
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client_printf(client, "songs: %i\n", stats->numberOfSongs);
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client_printf(client, "playtime: %li\n", stats->playTime);
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}
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static bool
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stats_visitor_song(SearchStats &stats, const struct locate_item_list *criteria,
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struct song *song)
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{
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if (locate_song_match(song, criteria)) {
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stats.numberOfSongs++;
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stats.playTime += song_get_duration(song);
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}
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return true;
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}
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bool
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searchStatsForSongsIn(struct client *client, const char *name,
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const struct locate_item_list *criteria,
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GError **error_r)
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{
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struct db_selection selection;
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db_selection_init(&selection, name, true);
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SearchStats stats;
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stats.numberOfSongs = 0;
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stats.playTime = 0;
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using namespace std::placeholders;
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const auto f = std::bind(stats_visitor_song, std::ref(stats), criteria,
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_1);
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if (!GetDatabase()->Visit(&selection, f, error_r))
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return false;
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printSearchStats(client, &stats);
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return true;
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}
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bool
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printAllIn(struct client *client, const char *uri_utf8, GError **error_r)
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{
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struct db_selection selection;
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db_selection_init(&selection, uri_utf8, true);
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return db_selection_print(client, &selection, false, error_r);
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}
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bool
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printInfoForAllIn(struct client *client, const char *uri_utf8,
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GError **error_r)
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{
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struct db_selection selection;
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db_selection_init(&selection, uri_utf8, true);
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return db_selection_print(client, &selection, true, error_r);
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}
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struct StringLess {
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gcc_pure
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bool operator()(const char *a, const char *b) const {
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return strcmp(a, b) < 0;
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}
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};
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typedef std::set<const char *, StringLess> StringSet;
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static void
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visitTag(struct client *client, StringSet &set,
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struct song *song, enum tag_type tagType)
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{
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struct tag *tag = song->tag;
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bool found = false;
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if (tagType == LOCATE_TAG_FILE_TYPE) {
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song_print_uri(client, song);
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return;
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}
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if (!tag)
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return;
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for (unsigned i = 0; i < tag->num_items; i++) {
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if (tag->items[i]->type == tagType) {
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set.insert(tag->items[i]->value);
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found = true;
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}
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}
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if (!found)
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set.insert("");
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}
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static bool
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unique_tags_visitor_song(struct client *client,
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enum tag_type tag_type,
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const struct locate_item_list *criteria,
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StringSet &set, struct song *song)
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{
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if (locate_song_match(song, criteria))
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visitTag(client, set, song, tag_type);
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return true;
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}
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bool
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listAllUniqueTags(struct client *client, int type,
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const struct locate_item_list *criteria,
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GError **error_r)
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{
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struct db_selection selection;
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db_selection_init(&selection, "", true);
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StringSet set;
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using namespace std::placeholders;
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const auto f = std::bind(unique_tags_visitor_song, client,
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(enum tag_type)type, criteria, std::ref(set),
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_1);
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if (!GetDatabase()->Visit(&selection, f, error_r))
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return false;
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if (type >= 0 && type <= TAG_NUM_OF_ITEM_TYPES)
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for (auto value : set)
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client_printf(client, "%s: %s\n",
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tag_item_names[type],
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value);
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return true;
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}
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