mpd/src/tag/Set.hxx
Max Kellermann 979f1b6c39 release v0.20.9
-----BEGIN PGP SIGNATURE-----
 
 iQJEBAABCAAuFiEEA5IzWngIOJSkMBxDI26KWMbbRRIFAlkz5jkQHG1heEBtdXNp
 Y3BkLm9yZwAKCRAjbopYxttFEubuD/kBXMcV4XawqGNNtSHdrY8CxSL8wJMCMJQl
 aMgRkKLPRml8Hj9FNNG9pjXBuT+qUgPX7t9gBEiT7c+sV3fHH40gUf1js5GIsEPm
 BAVfvww5EhmQWWVhPTLk1iZ4jp6E96mDmIG1znwo7etSZHXU8RJfR7woBi3SPJ9f
 OPcrimskNuWpAWeaEIKi/1Iwzy8d9VK9Ttb73gA3M5zSm7ioXzt3YClpwLRM8JU6
 QeUJchy6VwXnygswjUNmbhPc3GsD2FyUZ4OtJ0hodnqqajfldBxhcHUnQk4zZULr
 1nLSyOuA9bwLuFohH1T6HiY9z8PFzgqdIHvsjOJgZ4gQa69PVNjal2tUEUav9zFv
 aK4LvTVPnIk+hqRbtLpV7/rPKuClrC9BO4oYdBGBDNY4hqVpvRA9obP1s00aOi+K
 UhYqLqg7yeIEeTlUxFOhXJCKAEL69BuXT5ihJtDlB/dCUzv37sEch/4WDgs7uc+O
 9kJYlElvozw57mbczsee/PCSnSWrLCq/qG/bNEUUQOTueWNuifh3PL62UXGgfbEH
 01hJDyLr6ETSmWn7rjTfLJiHThX/EQQvOhs+35fbCyry65z4tFwrilGDmFVUWGPq
 /6QEpY1D6q4fkoma/iWOZoTkfKewatAPGMGWoJaGhCnfQFz4VTFtS2bDtuUctQ16
 jnXnPFxqBw==
 =0SSp
 -----END PGP SIGNATURE-----

Merge tag 'v0.20.9'

release v0.20.9
2017-06-04 12:57:05 +02:00

75 lines
1.9 KiB
C++

/*
* Copyright 2003-2017 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_TAG_SET_HXX
#define MPD_TAG_SET_HXX
#include "Compiler.h"
#include "Tag.hxx"
#include <set>
#include <string.h>
class TagMask;
/**
* Helper class for #TagSet which compares two #Tag objects.
*/
struct TagLess {
gcc_pure
bool operator()(const Tag &a, const Tag &b) const noexcept {
if (a.num_items != b.num_items)
return a.num_items < b.num_items;
const unsigned n = a.num_items;
for (unsigned i = 0; i < n; ++i) {
const TagItem &ai = *a.items[i];
const TagItem &bi = *b.items[i];
if (ai.type != bi.type)
return unsigned(ai.type) < unsigned(bi.type);
const int cmp = strcmp(ai.value, bi.value);
if (cmp != 0)
return cmp < 0;
}
return false;
}
};
/**
* A set of #Tag objects.
*/
class TagSet : public std::set<Tag, TagLess> {
public:
void InsertUnique(const Tag &tag,
TagType type, TagMask group_mask) noexcept;
private:
void InsertUnique(const Tag &src, TagType type, const char *value,
TagMask group_mask) noexcept;
bool CheckUnique(TagType dest_type,
const Tag &tag, TagType src_type,
TagMask group_mask) noexcept;
};
#endif