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* tag: introduce handy items_size() functionEric Wong2008-09-071-11/+12
| | | | | | | | | | | Trying to read or remember "tag->numOfItems * sizeof(*tag->items)" requires too much thinking and mental effort on my part. Also, favor "sizeof(struct mpd_tag)" over "sizeof(*tag->items)" because the former is easier to read and follow, even though the latter is easier to modify if the items member changes to a different type.
* fix -Wcast-qual -Wwrite-strings warningsMax Kellermann2008-09-076-33/+43
| | | | | | | | | The previous patch enabled these warnings. In Eric's branch, they were worked around with a generic deconst_ptr() function. There are several places where we can add "const" to pointers, and in others, libraries want non-const strings. In the latter, convert string literals to "static char[]" variables - this takes the same space, and seems safer than deconsting a string literal.
* removed fdprintf() and client_print()Max Kellermann2008-09-075-120/+0
| | | | | | All callers of fdprintf() have been converted to client_printf() or fprintf(); it is time to remove this clumsy hack now. We can also remove client_print() which took a file descriptor as parameter.
* client: removed client_get_fd()Max Kellermann2008-09-072-15/+0
| | | | | | Now that we have removed all invocations of client_get_fd(), we can safely remove this transitional function. All access to the file descriptor is now hidden behind the interface declared in client.h.
* audio: don't pass "fd" to printAudioDevices()Max Kellermann2008-09-073-9/+12
| | | | Pass the client struct instead.
* stats: don't pass "fd" to printStats()Max Kellermann2008-09-073-12/+21
| | | | Pass the client struct instead of the raw file descriptor.
* playlist: don't pass "fd" to showPlaylist(), playlistChangesPosId()Max Kellermann2008-09-073-11/+10
| | | | Pass the client struct instead of the raw file descriptor.
* playlist: added playlist_save()Max Kellermann2008-09-071-2/+11
| | | | | | The shared code in showPlaylist() isn't worth it, because we aim to remove fdprintf(). Duplicate this small function, and enable stdio buffering for saved playlists.
* ls: don't pass "fd" to lsPlaylists(), printRemoteUrlHandlers()Max Kellermann2008-09-073-10/+12
| | | | Pass the client struct instead of the raw file descriptor.
* tag: don't pass "fd" to printVisitedInTagTracker()Max Kellermann2008-09-073-8/+9
| | | | Pass the client struct instead of the raw file descriptor.
* command: concatenate strings at compile timeMax Kellermann2008-09-071-27/+27
| | | | | | String literals (including those defined in CPP macros) can be concatenated at compile time. This saves some CPU cycles in vsnprintf() at run time.
* command: removed commandError()Max Kellermann2008-09-072-27/+0
| | | | | commandError() has been superseded by command_error(), and is not being used anymore. Remove it.
* playlist: pass struct client to loadPlaylist()Max Kellermann2008-09-073-5/+5
| | | | | | | The function loadPlaylist() wants to report incremental errors to the client, for this reason we cannot remove its protocol dependency right now. Instead, make it use the client struct instead of the raw file descriptor.
* pass "struct client" to dbUtils.c, song.c, tag_print.cMax Kellermann2008-09-0712-110/+121
| | | | | | Don't pass the raw file descriptor around. This migration patch is rather large, because all of the sources have inter dependencies - we have to change all of them at the same time.
* command: pass struct client to all commandsMax Kellermann2008-09-071-248/+259
| | | | | | | Pass the client struct to CommandHandlerFunction and CommandListHandlerFunction. Most commands cannot take real advantage of that yet, since most of them still work with the raw file descriptor.
* command: pass struct client to getCommandEntryAnd...()Max Kellermann2008-09-071-26/+21
| | | | | Instead of passing the file descriptor, pass the client struct to getCommandEntryAndCheckArgcAndPermission().
* command: added command_success() and command_error()Max Kellermann2008-09-073-5/+35
| | | | | | | These two functions take a client struct instead of the file descriptor. We will now begin passing the client struct around instead of a raw file descriptor (which needed a linear lookup in the client list to be useful).
* audio: don't pass "fd" to {en,dis}ableAudioDevice()Max Kellermann2008-09-073-18/+21
| | | | No protocol code in the audio output library.
* volume: don't pass "fd" to changeVolumeLevel()Max Kellermann2008-09-073-22/+26
| | | | | The "volume" library shouldn't talk to the client. Move error handling to command.c.
* directory: don't pass "fd" to updateInit()Max Kellermann2008-09-073-17/+53
| | | | Again, move error handling to command.c.
* directory: printDirectoryInfo() does not call commandError()Max Kellermann2008-09-072-4/+4
| | | | Move another ocurrence of error handling over to command.c.
* directory: don't pass fd to traverseAllIn()Max Kellermann2008-09-076-32/+69
| | | | | | | | This patch continues the work of the previous patch: don't pass a file descriptor at all to traverseAllIn(). Since this fd was only used to report "directory not found" errors, we can easily move that check to the caller. This is a great relief, since it removes the dependency on a client connection from a lot of enumeration functions.
* directory: don't pass fd to traverseAllIn() callbacksMax Kellermann2008-09-074-51/+81
| | | | | | | | | | Database traversal should be generic, and not bound to a client connection. This is the first step: no file descriptor for the callback functions forEachSong() and forEachDir(). If a callback needs the file descriptor, it has to be passed in the void*data pointer somehow; some callbacks might need a new struct for passing more than one parameter. This might look a bit cumbersome right now, but our goal is to have a clean API.
* playlist: PlaylistInfo() does not call commandError()Max Kellermann2008-09-072-6/+15
| | | | | | Continuing the effort of removing protocol specific calls from the core libraries: let the command.c code call commandError() based on PlaylistInfo's return value.
* playlist: don't pass "fd" to storedPlaylist.c functionsMax Kellermann2008-09-076-150/+124
| | | | | Return an "enum playlist_result" value instead of calling commandError() in storedPlaylist.c.
* playlist: don't pass "fd" to playlist.c functionsMax Kellermann2008-09-074-188/+247
| | | | | | The playlist library shouldn't talk to the client if possible. Introduce the "enum playlist_result" type which the caller (i.e. command.c) may use to generate an error message.
* playlist: showPlaylist() and shufflePlaylist() cannot failMax Kellermann2008-09-073-10/+8
| | | | Make them both return void.
* playlist: moved "repeat" and "random" value checks to command.cMax Kellermann2008-09-073-24/+26
| | | | | | | | Client's input values should be validated by the command implementation, and the core libraries shouldn't talk to the client directly if possible. Thus, setPlaylistRepeatStatus() and setPlaylistRandomStatus() don't get the file descriptor, and cannot fail (return void).
* playlist: fix FILE* leak in appendSongToStoredPlaylistByPath()Max Kellermann2008-09-071-0/+2
| | | | | When an error occurs after the file has been opened, the function will never close the FILE object.
* playlist: replaced run-time check with assertionMax Kellermann2008-09-071-2/+1
| | | | | | The "fspath" argument of writeStoredPlaylistToPath() must never be NULL. There should be an assertion on that, instead of a run-time check.
* playlist: added is_valid_playlist_name()Max Kellermann2008-09-072-3/+10
| | | | | | | | The function valid_playlist_name() checks the name, but it insists on reporting an eventual error to the client. The new function is_valid_playlist_name() is more generic: it just returns a boolean, and does not care what the caller will use it for. The old function valid_playlist_name() will be removed later.
* tag: added buffered versions of the tag_print.c codeMax Kellermann2008-09-074-3/+85
| | | | | | | | | | | Currently, when the tag cache is being serialized to hard disk, the stdio buffer is flushed before every song, because tag_print.c performs unbuffered writes on the raw file descriptor. Unfortunately, the fdprintf() API allows buffered I/O only for a client connection by looking up the client pointer owning the file descriptor - for stdio, this is not possible. To re-enable proper stdio buffering, we have to duplicate the tag_print.c code without fprintf() instead of our custom fdprintf() hack. Add this duplicated code to tag_save.c.
* song: moved code to song_print.c, song_save.cMax Kellermann2008-09-0710-183/+284
| | | | | | | Move everything which dumps song information (via tag_print.c) to a separate source file. song_print.c gets code which writes song data to the client; song_save.c is responsible for serializing songs from the tag cache.
* tag: moved code to tag_print.cMax Kellermann2008-09-078-29/+105
| | | | | Move everything which dumps a tag to a file descriptor to tag_print.c. This relaxes dependencies and splits the code into smaller parts.
* client: added client_printf()Max Kellermann2008-09-072-0/+40
| | | | | | Based on client_puts(), client_printf() is the successor of fdprintf(). As soon as all fdprintf() callers have been rewritten to use client_printf(), we can remove fdprintf().
* client: added client_write() and client_puts()Max Kellermann2008-09-073-26/+45
| | | | | | client_write() writes a buffer to the client and buffers it if required. client_puts() does the same for a C string. The next patch will add more tools which will replace fdprintf() later.
* include cleanupMax Kellermann2008-09-069-7/+9
| | | | As usual, include only headers which are really needed.
* tag: fix segfault on updateEric Wong2008-09-062-14/+22
| | | | | | | | | | | | clearMpdTag could be called on a tag that was still in a tag_begin_add transaction before tag_end_add is called. This was causing free() to attempt to operate on bulk.items; which is un-free()-able. Now instead we unmark the bulk.busy to avoid committing the tags to the heap only to be immediately freed. Additionally, we need to remember to call tag_end_add() when a song is updated before we NULL song->tag to avoid tripping an assertion the next time tag_begin_add() is called.
* client: don't check FD_ISSET(client->fd) on expired clientMax Kellermann2008-09-061-1/+2
| | | | | client->fd becomes -1 when the client expires. Don't use FD_ISSET() with this expired client; doing so would cause a crash due to SIGBUS.
* client: removed assert(client->fd)>=0Max Kellermann2008-09-061-4/+2
| | | | | | Since client->fd==-1 has become our "expired" flag, it may already be -1 when client_close() is called. Don't assert that it is still non-negative, and call client_set_expired() instead.
* dbUtils, playlist, directory: pass constant pointersMax Kellermann2008-09-066-37/+38
| | | | The usual bunch of const pointer conversions.
* tag: optimize tag_dup(), copy item referencesMax Kellermann2008-08-293-7/+42
| | | | | Don't call tag_pool_get_item() for duplicating tags, just increase the item's reference counter instead.
* oggflac: fix GCC warningsMax Kellermann2008-08-291-9/+9
| | | | | | Fix lots of "unused parameter" warnings in the OggFLAC decoder plugin. Not sure if anybody uses it anymore, since newer libflac obsoletes it.
* tag: fix the shout and oggflac pluginsMax Kellermann2008-08-292-10/+12
| | | | | | During the tag library refactoring, the shout plugin was disabled, and I forgot about adapting it to the new API. Apply the same fixes to the oggflac decoder plugin.
* const pointersMax Kellermann2008-08-294-10/+10
| | | | Yet another patch which converts pointer arguments to "const".
* tag: static directory nameMax Kellermann2008-08-291-5/+3
| | | | | | While parsing the tag cache, don't allocate the directory name from the heap, but copy it into a buffer on the stack. This reduces heap fragmentation by 1%.
* tag: try not to reallocate tag.items in every add() callMax Kellermann2008-08-293-7/+91
| | | | | | | | | | | | | | | | If many tag_items are added at once while the tag cache is being loaded, manage these items in a static fixed list, instead of reallocating the list with every newly created item. This reduces heap fragmentation. Massif results again: mk before: total 12,837,632; useful 10,626,383; extra 2,211,249 mk now: total 12,736,720; useful 10,626,383; extra 2,110,337 The "useful" value is the same since this patch only changes the way we allocate the same amount of memory, but heap fragmentation was reduced by 5%.
* song: don't export newNullSong()Max Kellermann2008-08-292-3/+1
| | | | The function newNullSong() is only used internally in song.c.
* tag: try not to duplicate the input stringMax Kellermann2008-08-291-13/+18
| | | | | | Try to detect if the string needs Latin1-UTF8 conversion, or whitespace cleanup. If not, we don't need to allocate temporary memory, leading to decreased heap fragmentation.
* tag: pass length to fix_utf8()Max Kellermann2008-08-291-3/+4
| | | | Same as the previous patch, prepare the function fix_utf8() this time.
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