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-rw-r--r--src/db/plugins/simple/Directory.cxx291
1 files changed, 291 insertions, 0 deletions
diff --git a/src/db/plugins/simple/Directory.cxx b/src/db/plugins/simple/Directory.cxx
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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);
+}