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[mpd] Add support for version and ranges to 'plchanges' and

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'plchangesposid'
This commit is contained in:
chme 2017-12-09 10:25:36 +01:00
parent 912635e737
commit 2ee02d407b
1 changed files with 70 additions and 22 deletions
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92
src/mpd.c
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@ -1882,6 +1882,52 @@ mpd_command_playlistinfo(struct evbuffer *evbuf, int argc, char **argv, char **e
return 0;
}
static int
plchanges_build_queryparams(struct query_params *query_params, int argc, char **argv, char **errmsg)
{
uint32_t version;
int start_pos;
int end_pos;
int ret;
memset(query_params, 0, sizeof(struct query_params));
if (argc < 2)
{
*errmsg = safe_asprintf("Missing argument for command 'plchanges'");
return ACK_ERROR_ARG;
}
ret = safe_atou32(argv[1], &version);
if (ret < 0)
{
*errmsg = safe_asprintf("Argument doesn't convert to integer: '%s'", argv[1]);
return ACK_ERROR_ARG;
}
start_pos = 0;
end_pos = 0;
if (argc > 2)
{
ret = mpd_pars_range_arg(argv[2], &start_pos, &end_pos);
if (ret < 0)
{
*errmsg = safe_asprintf("Argument doesn't convert to integer or range: '%s'", argv[2]);
return ACK_ERROR_ARG;
}
if (start_pos < 0)
DPRINTF(E_DBG, L_MPD, "Command 'playlistinfo' called with pos < 0 (arg = '%s'), ignore arguments and return whole queue\n", argv[1]);
}
if (start_pos < 0 || end_pos <= 0)
query_params->filter = db_mprintf("(queue_version > %d)", version);
else
query_params->filter = db_mprintf("(queue_version > %d AND pos >= %d AND pos < %d)", version, start_pos, end_pos);
return 0;
}
/*
* Command handler function for 'plchanges'
* Lists all changed songs in the queue since the given playlist version in argv[1].
@ -1893,34 +1939,34 @@ mpd_command_plchanges(struct evbuffer *evbuf, int argc, char **argv, char **errm
struct db_queue_item queue_item;
int ret;
/*
* forked-daapd does not keep track of changes in the queue based on the playlist version,
* therefor plchanges returns all songs in the queue as changed ignoring the given version.
*/
memset(&query_params, 0, sizeof(struct query_params));
ret = plchanges_build_queryparams(&query_params, argc, argv, errmsg);
if (ret != 0)
return ret;
ret = db_queue_enum_start(&query_params);
if (ret < 0)
{
*errmsg = safe_asprintf("Failed to start queue enum for command plchanges");
return ACK_ERROR_ARG;
}
goto error;
while ((ret = db_queue_enum_fetch(&query_params, &queue_item)) == 0 && queue_item.id > 0)
{
ret = mpd_add_db_queue_item(evbuf, &queue_item);
if (ret < 0)
{
*errmsg = safe_asprintf("Error adding media info for file with id: %d", queue_item.file_id);
db_queue_enum_end(&query_params);
return ACK_ERROR_UNKNOWN;
DPRINTF(E_LOG, L_MPD, "Error adding media info for file with id: %d", queue_item.file_id);
goto error;
}
}
db_queue_enum_end(&query_params);
free_query_params(&query_params, 1);
return 0;
error:
db_queue_enum_end(&query_params);
free_query_params(&query_params, 1);
*errmsg = safe_asprintf("Failed to start queue enum for command plchanges");
return ACK_ERROR_UNKNOWN;
}
/*
@ -1934,18 +1980,13 @@ mpd_command_plchangesposid(struct evbuffer *evbuf, int argc, char **argv, char *
struct db_queue_item queue_item;
int ret;
/*
* forked-daapd does not keep track of changes in the queue based on the playlist version,
* therefor plchangesposid returns all songs in the queue as changed ignoring the given version.
*/
memset(&query_params, 0, sizeof(struct query_params));
ret = plchanges_build_queryparams(&query_params, argc, argv, errmsg);
if (ret != 0)
return ret;
ret = db_queue_enum_start(&query_params);
if (ret < 0)
{
*errmsg = safe_asprintf("Failed to start queue enum for command plchangesposid");
return ACK_ERROR_ARG;
}
goto error;
while ((ret = db_queue_enum_fetch(&query_params, &queue_item)) == 0 && queue_item.id > 0)
{
@ -1957,8 +1998,15 @@ mpd_command_plchangesposid(struct evbuffer *evbuf, int argc, char **argv, char *
}
db_queue_enum_end(&query_params);
free_query_params(&query_params, 1);
return 0;
error:
db_queue_enum_end(&query_params);
free_query_params(&query_params, 1);
*errmsg = safe_asprintf("Failed to start queue enum for command plchangesposid");
return ACK_ERROR_UNKNOWN;
}
/*