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command/Request: add parser methods

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Wrapper for protocol/ArgParser.cxx.
This commit is contained in:
Max Kellermann 2015-08-11 22:18:40 +02:00
parent e118e958f7
commit b1480167be
9 changed files with 96 additions and 67 deletions
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9
src/command/DatabaseCommands.cxx
View File

@ -33,7 +33,6 @@
#include "util/Error.hxx"
#include "SongFilter.hxx"
#include "protocol/Result.hxx"
#include "protocol/ArgParser.hxx"
#include "BulkEdit.hxx"
#include <string.h>
@ -54,7 +53,7 @@ CommandResult
handle_lsinfo2(Client &client, Request args)
{
/* default is root directory */
const char *const uri = args.IsEmpty() ? "" : args.front();
const auto uri = args.GetOptional(0, "");
const DatabaseSelection selection(uri, false);
@ -70,7 +69,7 @@ handle_match(Client &client, Request args, bool fold_case)
{
RangeArg window;
if (args.size >= 2 && strcmp(args[args.size - 2], "window") == 0) {
if (!ParseCommandArg(client, window, args.back()))
if (!args.Parse(args.size - 1, window, client))
return CommandResult::ERROR;
args.pop_back();
@ -190,7 +189,7 @@ CommandResult
handle_listall(Client &client, Request args)
{
/* default is root directory */
const char *const uri = args.IsEmpty() ? "" : args.front();
const auto uri = args.GetOptional(0, "");
Error error;
return db_selection_print(client, DatabaseSelection(uri, true),
@ -275,7 +274,7 @@ CommandResult
handle_listallinfo(Client &client, Request args)
{
/* default is root directory */
const char *const uri = args.IsEmpty() ? "" : args.front();
const auto uri = args.GetOptional(0, "");
Error error;
return db_selection_print(client, DatabaseSelection(uri, true),

9
src/command/OtherCommands.cxx
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@ -32,7 +32,6 @@
#include "tag/TagHandler.hxx"
#include "TimePrint.hxx"
#include "decoder/DecoderPrint.hxx"
#include "protocol/ArgParser.hxx"
#include "protocol/Result.hxx"
#include "ls.hxx"
#include "mixer/Volume.hxx"
@ -116,7 +115,7 @@ CommandResult
handle_listfiles(Client &client, Request args)
{
/* default is root directory */
const char *const uri = args.IsEmpty() ? "" : args.front();
const auto uri = args.GetOptional(0, "");
if (memcmp(uri, "file:///", 8) == 0)
/* list local directory */
@ -155,7 +154,7 @@ CommandResult
handle_lsinfo(Client &client, Request args)
{
/* default is root directory */
const char *const uri = args.IsEmpty() ? "" : args.front();
const auto uri = args.GetOptional(0, "");
if (memcmp(uri, "file:///", 8) == 0) {
/* print information about an arbitrary local file */
@ -309,7 +308,7 @@ CommandResult
handle_setvol(Client &client, Request args)
{
unsigned level;
if (!ParseCommandArg(client, level, args.front(), 100))
if (!args.Parse(0, level, client, 100))
return CommandResult::ERROR;
if (!volume_level_change(client.partition.outputs, level)) {
@ -325,7 +324,7 @@ CommandResult
handle_volume(Client &client, Request args)
{
int relative;
if (!ParseCommandArg(client, relative, args.front(), -100, 100))
if (!args.Parse(0, relative, client, -100, 100))
return CommandResult::ERROR;
const int old_volume = volume_level_get(client.partition.outputs);

7
src/command/OutputCommands.cxx
View File

@ -23,7 +23,6 @@
#include "output/OutputPrint.hxx"
#include "output/OutputCommand.hxx"
#include "protocol/Result.hxx"
#include "protocol/ArgParser.hxx"
#include "client/Client.hxx"
#include "Partition.hxx"
#include "util/ConstBuffer.hxx"
@ -34,7 +33,7 @@ handle_enableoutput(Client &client, Request args)
assert(args.size == 1);
unsigned device;
if (!ParseCommandArg(client, device, args.front()))
if (!args.Parse(0, device, client))
return CommandResult::ERROR;
if (!audio_output_enable_index(client.partition.outputs, device)) {
@ -52,7 +51,7 @@ handle_disableoutput(Client &client, Request args)
assert(args.size == 1);
unsigned device;
if (!ParseCommandArg(client, device, args.front()))
if (!args.Parse(0, device, client))
return CommandResult::ERROR;
if (!audio_output_disable_index(client.partition.outputs, device)) {
@ -70,7 +69,7 @@ handle_toggleoutput(Client &client, Request args)
assert(args.size == 1);
unsigned device;
if (!ParseCommandArg(client, device, args.front()))
if (!args.Parse(0, device, client))
return CommandResult::ERROR;
if (!audio_output_toggle_index(client.partition.outputs, device)) {

29
src/command/PlayerCommands.cxx
View File

@ -28,7 +28,6 @@
#include "Partition.hxx"
#include "Instance.hxx"
#include "protocol/Result.hxx"
#include "protocol/ArgParser.hxx"
#include "AudioFormat.hxx"
#include "ReplayGainConfig.hxx"
#include "util/ConstBuffer.hxx"
@ -61,7 +60,7 @@ CommandResult
handle_play(Client &client, Request args)
{
int song = -1;
if (!args.IsEmpty() && !ParseCommandArg(client, song, args.front()))
if (!args.ParseOptional(0, song, client))
return CommandResult::ERROR;
PlaylistResult result = client.partition.PlayPosition(song);
@ -72,7 +71,7 @@ CommandResult
handle_playid(Client &client, Request args)
{
int id = -1;
if (!args.IsEmpty() && !ParseCommandArg(client, id, args.front()))
if (!args.ParseOptional(0, id, client))
return CommandResult::ERROR;
PlaylistResult result = client.partition.PlayId(id);
@ -98,7 +97,7 @@ handle_pause(Client &client, Request args)
{
if (!args.IsEmpty()) {
bool pause_flag;
if (!ParseCommandArg(client, pause_flag, args.front()))
if (!args.Parse(0, pause_flag, client))
return CommandResult::ERROR;
client.player_control.SetPause(pause_flag);
@ -249,7 +248,7 @@ CommandResult
handle_repeat(Client &client, Request args)
{
bool status;
if (!ParseCommandArg(client, status, args.front()))
if (!args.Parse(0, status, client))
return CommandResult::ERROR;
client.partition.SetRepeat(status);
@ -260,7 +259,7 @@ CommandResult
handle_single(Client &client, Request args)
{
bool status;
if (!ParseCommandArg(client, status, args.front()))
if (!args.Parse(0, status, client))
return CommandResult::ERROR;
client.partition.SetSingle(status);
@ -271,7 +270,7 @@ CommandResult
handle_consume(Client &client, Request args)
{
bool status;
if (!ParseCommandArg(client, status, args.front()))
if (!args.Parse(0, status, client))
return CommandResult::ERROR;
client.partition.SetConsume(status);
@ -282,7 +281,7 @@ CommandResult
handle_random(Client &client, Request args)
{
bool status;
if (!ParseCommandArg(client, status, args.front()))
if (!args.Parse(0, status, client))
return CommandResult::ERROR;
client.partition.SetRandom(status);
@ -303,9 +302,9 @@ handle_seek(Client &client, Request args)
unsigned song;
SongTime seek_time;
if (!ParseCommandArg(client, song, args[0]))
if (!args.Parse(0, song, client))
return CommandResult::ERROR;
if (!ParseCommandArg(client, seek_time, args[1]))
if (!args.Parse(1, seek_time, client))
return CommandResult::ERROR;
PlaylistResult result =
@ -318,9 +317,9 @@ handle_seekid(Client &client, Request args)
{
unsigned id;
SongTime seek_time;
if (!ParseCommandArg(client, id, args[0]))
if (!args.Parse(0, id, client))
return CommandResult::ERROR;
if (!ParseCommandArg(client, seek_time, args[1]))
if (!args.Parse(1, seek_time, client))
return CommandResult::ERROR;
PlaylistResult result =
@ -346,7 +345,7 @@ CommandResult
handle_crossfade(Client &client, Request args)
{
unsigned xfade_time;
if (!ParseCommandArg(client, xfade_time, args.front()))
if (!args.Parse(0, xfade_time, client))
return CommandResult::ERROR;
client.player_control.SetCrossFade(xfade_time);
@ -357,7 +356,7 @@ CommandResult
handle_mixrampdb(Client &client, Request args)
{
float db;
if (!ParseCommandArg(client, db, args.front()))
if (!args.Parse(0, db, client))
return CommandResult::ERROR;
client.player_control.SetMixRampDb(db);
@ -368,7 +367,7 @@ CommandResult
handle_mixrampdelay(Client &client, Request args)
{
float delay_secs;
if (!ParseCommandArg(client, delay_secs, args.front()))
if (!args.Parse(0, delay_secs, client))
return CommandResult::ERROR;
client.player_control.SetMixRampDelay(delay_secs);

14
src/command/PlaylistCommands.cxx
View File

@ -33,7 +33,6 @@
#include "queue/Playlist.hxx"
#include "TimePrint.hxx"
#include "client/Client.hxx"
#include "protocol/ArgParser.hxx"
#include "protocol/Result.hxx"
#include "ls.hxx"
#include "Mapper.hxx"
@ -71,10 +70,8 @@ handle_save(Client &client, Request args)
CommandResult
handle_load(Client &client, Request args)
{
RangeArg range;
if (args.size < 2)
range.SetAll();
else if (!ParseCommandArg(client, range, args[1]))
RangeArg range = RangeArg::All();
if (!args.ParseOptional(1, range, client))
return CommandResult::ERROR;
const ScopeBulkEdit bulk_edit(client.partition);
@ -146,7 +143,7 @@ handle_playlistdelete(Client &client, Request args)
{
const char *const name = args[0];
unsigned from;
if (!ParseCommandArg(client, from, args[1]))
if (!args.Parse(1, from, client))
return CommandResult::ERROR;
Error error;
@ -160,9 +157,8 @@ handle_playlistmove(Client &client, Request args)
{
const char *const name = args.front();
unsigned from, to;
if (!ParseCommandArg(client, from, args[1]))
return CommandResult::ERROR;
if (!ParseCommandArg(client, to, args[2]))
if (!args.Parse(1, from, client) ||
!args.Parse(2, to, client))
return CommandResult::ERROR;
Error error;

46
src/command/QueueCommands.cxx
View File

@ -30,7 +30,6 @@
#include "client/Client.hxx"
#include "Partition.hxx"
#include "BulkEdit.hxx"
#include "protocol/ArgParser.hxx"
#include "protocol/Result.hxx"
#include "ls.hxx"
#include "util/ConstBuffer.hxx"
@ -105,8 +104,9 @@ handle_addid(Client &client, Request args)
if (args.size == 2) {
unsigned to;
if (!ParseCommandArg(client, to, args[1]))
if (!args.Parse(1, to, client))
return CommandResult::ERROR;
PlaylistResult result = client.partition.MoveId(added_id, to);
if (result != PlaylistResult::SUCCESS) {
CommandResult ret =
@ -155,7 +155,7 @@ CommandResult
handle_rangeid(Client &client, Request args)
{
unsigned id;
if (!ParseCommandArg(client, id, args.front()))
if (!args.Parse(0, id, client))
return CommandResult::ERROR;
SongTime start, end;
@ -177,7 +177,7 @@ CommandResult
handle_delete(Client &client, Request args)
{
RangeArg range;
if (!ParseCommandArg(client, range, args.front()))
if (!args.Parse(0, range, client))
return CommandResult::ERROR;
auto result = client.partition.DeleteRange(range.start, range.end);
@ -188,7 +188,7 @@ CommandResult
handle_deleteid(Client &client, Request args)
{
unsigned id;
if (!ParseCommandArg(client, id, args.front()))
if (!args.Parse(0, id, client))
return CommandResult::ERROR;
PlaylistResult result = client.partition.DeleteId(id);
@ -205,10 +205,8 @@ handle_playlist(Client &client, gcc_unused Request args)
CommandResult
handle_shuffle(gcc_unused Client &client, Request args)
{
RangeArg range;
if (args.IsEmpty())
range.SetAll();
else if (!ParseCommandArg(client, range, args.front()))
RangeArg range = RangeArg::All();
if (!args.ParseOptional(0, range, client))
return CommandResult::ERROR;
client.partition.Shuffle(range.start, range.end);
@ -249,10 +247,8 @@ handle_plchangesposid(Client &client, Request args)
CommandResult
handle_playlistinfo(Client &client, Request args)
{
RangeArg range;
if (args.IsEmpty())
range.SetAll();
else if (!ParseCommandArg(client, range, args.front()))
RangeArg range = RangeArg::All();
if (!args.ParseOptional(0, range, client))
return CommandResult::ERROR;
if (!playlist_print_info(client, client.playlist,
@ -268,7 +264,7 @@ handle_playlistid(Client &client, Request args)
{
if (!args.IsEmpty()) {
unsigned id;
if (!ParseCommandArg(client, id, args.front()))
if (!args.Parse(0, id, client))
return CommandResult::ERROR;
bool ret = playlist_print_id(client, client.playlist, id);
@ -312,9 +308,8 @@ handle_playlistsearch(Client &client, Request args)
CommandResult
handle_prio(Client &client, Request args)
{
const char *const priority_string = args.shift();
unsigned priority;
if (!ParseCommandArg(client, priority, priority_string, 0xff))
if (!args.ParseShift(0, priority, client, 0xff))
return CommandResult::ERROR;
for (const char *i : args) {
@ -336,9 +331,8 @@ handle_prio(Client &client, Request args)
CommandResult
handle_prioid(Client &client, Request args)
{
const char *const priority_string = args.shift();
unsigned priority;
if (!ParseCommandArg(client, priority, priority_string, 0xff))
if (!args.ParseShift(0, priority, client, 0xff))
return CommandResult::ERROR;
for (const char *i : args) {
@ -361,8 +355,8 @@ handle_move(Client &client, Request args)
RangeArg range;
int to;
if (!ParseCommandArg(client, range, args[0]) ||
!ParseCommandArg(client, to, args[1]))
if (!args.Parse(0, range, client) ||
!args.Parse(1, to, client))
return CommandResult::ERROR;
PlaylistResult result =
@ -375,8 +369,8 @@ handle_moveid(Client &client, Request args)
{
unsigned id;
int to;
if (!ParseCommandArg(client, id, args[0]) ||
!ParseCommandArg(client, to, args[1]))
if (!args.Parse(0, id, client) ||
!args.Parse(1, to, client))
return CommandResult::ERROR;
PlaylistResult result = client.partition.MoveId(id, to);
@ -387,8 +381,8 @@ CommandResult
handle_swap(Client &client, Request args)
{
unsigned song1, song2;
if (!ParseCommandArg(client, song1, args[0]) ||
!ParseCommandArg(client, song2, args[1]))
if (!args.Parse(0, song1, client) ||
!args.Parse(1, song2, client))
return CommandResult::ERROR;
PlaylistResult result =
@ -400,8 +394,8 @@ CommandResult
handle_swapid(Client &client, Request args)
{
unsigned id1, id2;
if (!ParseCommandArg(client, id1, args[0]) ||
!ParseCommandArg(client, id2, args[1]))
if (!args.Parse(0, id1, client) ||
!args.Parse(1, id2, client))
return CommandResult::ERROR;
PlaylistResult result = client.partition.SwapIds(id1, id2);

40
src/command/Request.hxx
View File

@ -21,14 +21,54 @@
#define MPD_REQUEST_HXX
#include "check.h"
#include "protocol/ArgParser.hxx"
#include "util/ConstBuffer.hxx"
#include <utility>
#include <assert.h>
class Client;
class Request : public ConstBuffer<const char *> {
typedef ConstBuffer<const char *> Base;
public:
constexpr Request(const char *const*argv, size_type n)
:Base(argv, n) {}
constexpr const char *GetOptional(unsigned idx,
const char *default_value=nullptr) const {
return idx < size
? data[idx]
: default_value;
}
template<typename T, typename... Args>
bool Parse(unsigned idx, T &value_r, Client &client,
Args&&... args) {
assert(idx < size);
return ParseCommandArg(client, value_r, data[idx],
std::forward<Args>(args)...);
}
template<typename T, typename... Args>
bool ParseOptional(unsigned idx, T &value_r, Client &client,
Args&&... args) {
return idx >= size ||
Parse(idx, value_r, client,
std::forward<Args>(args)...);
}
template<typename T, typename... Args>
bool ParseShift(unsigned idx, T &value_r, Client &client,
Args&&... args) {
bool success = Parse(idx, value_r, client,
std::forward<Args>(args)...);
shift();
return success;
}
};
#endif

5
src/command/TagCommands.cxx
View File

@ -22,7 +22,6 @@
#include "Request.hxx"
#include "CommandError.hxx"
#include "client/Client.hxx"
#include "protocol/ArgParser.hxx"
#include "protocol/Result.hxx"
#include "tag/Tag.hxx"
#include "Partition.hxx"
@ -32,7 +31,7 @@ CommandResult
handle_addtagid(Client &client, Request args)
{
unsigned song_id;
if (!ParseCommandArg(client, song_id, args.front()))
if (!args.Parse(0, song_id, client))
return CommandResult::ERROR;
const char *const tag_name = args[1];
@ -57,7 +56,7 @@ CommandResult
handle_cleartagid(Client &client, Request args)
{
unsigned song_id;
if (!ParseCommandArg(client, song_id, args.front()))
if (!args.Parse(0, song_id, client))
return CommandResult::ERROR;
TagType tag_type = TAG_NUM_OF_ITEM_TYPES;

4
src/protocol/ArgParser.hxx
View File

@ -47,6 +47,10 @@ struct RangeArg {
start = 0;
end = std::numeric_limits<unsigned>::max();
}
static constexpr RangeArg All() {
return { 0, std::numeric_limits<unsigned>::max() };
}
};
bool