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/*
* Copyright (C) 2003-2013 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/Alloc.hxx"
#include <assert.h>
#include <string.h>
#include <stdlib.h>
Directory detached_root;
static Song *
song_alloc(const char *uri, Directory *parent)
{
size_t uri_length;
assert(uri);
uri_length = strlen(uri);
assert(uri_length);
Song *song = (Song *)
xalloc(sizeof(*song) - sizeof(song->uri) + uri_length + 1);
song->tag = nullptr;
memcpy(song->uri, uri, uri_length + 1);
song->parent = parent;
song->mtime = 0;
song->start_ms = song->end_ms = 0;
return song;
}
Song *
Song::NewRemote(const char *uri)
{
return song_alloc(uri, nullptr);
}
Song *
Song::NewFile(const char *path, Directory *parent)
{
assert((parent == nullptr) == (*path == '/'));
return song_alloc(path, parent);
}
Song *
Song::ReplaceURI(const char *new_uri)
{
Song *new_song = song_alloc(new_uri, parent);
new_song->tag = tag;
new_song->mtime = mtime;
new_song->start_ms = start_ms;
new_song->end_ms = end_ms;
free(this);
return new_song;
}
Song *
Song::NewDetached(const char *uri)
{
assert(uri != nullptr);
return song_alloc(uri, &detached_root);
}
Song *
Song::DupDetached() const
{
Song *song;
if (IsInDatabase()) {
const auto new_uri = GetURI();
song = NewDetached(new_uri.c_str());
} else
song = song_alloc(uri, nullptr);
song->tag = tag != nullptr ? new Tag(*tag) : nullptr;
song->mtime = mtime;
song->start_ms = start_ms;
song->end_ms = end_ms;
return song;
}
void
Song::Free()
{
delete tag;
free(this);
}
void
Song::ReplaceTag(Tag &&_tag)
{
if (tag == nullptr)
tag = new Tag();
*tag = std::move(_tag);
}
gcc_pure
static inline bool
directory_equals(const Directory &a, const Directory &b)
{
return strcmp(a.path, b.path) == 0;
}
gcc_pure
static inline bool
directory_is_same(const Directory *a, const Directory *b)
{
return a == b ||
(a != nullptr && b != nullptr &&
directory_equals(*a, *b));
}
bool
SongEquals(const Song &a, const Song &b)
{
if (a.parent != nullptr && b.parent != nullptr &&
!directory_equals(*a.parent, *b.parent) &&
(a.parent == &detached_root || b.parent == &detached_root)) {
/* must compare the full URI if one of the objects is
"detached" */
const auto au = a.GetURI();
const auto bu = b.GetURI();
return au == bu;
}
return directory_is_same(a.parent, b.parent) &&
strcmp(a.uri, b.uri) == 0;
}
std::string
Song::GetURI() const
{
assert(*uri);
if (!IsInDatabase() || 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;
}
}
double
Song::GetDuration() const
{
if (end_ms > 0)
return (end_ms - start_ms) / 1000.0;
if (tag == nullptr)
return 0;
return tag->time - start_ms / 1000.0;
}
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