From 2b3bf3f5cef4ed9ff9e418b27194d89ca7e66b67 Mon Sep 17 00:00:00 2001 From: kaliko Date: Tue, 16 Nov 2021 15:24:52 +0100 Subject: [PATCH] More robust Tags plugin MPD filter configuration Remove external enclosing parentheses in user defined MPD filter, for instance when there is more than one expression: ((genre == 'rock' ) AND (date =~ '198.')). Even though it's a valid MPD filter, forge_filter will enclose it properly. We do not want to through a syntax error at users since it's a valid MPD filter, hence trying to transparently reformat the filter. filter = ((genre == 'rock' ) AND (date =~ '198.')) and filter = (genre == 'rock' ) AND (date =~ '198.') Will work the same, producing the valid MPD filter: ((genre == 'Punk') AND (date =~ '198[2-9]+') AND (artist != '')) --- sima/plugins/internal/tags.py | 25 ++++++++++++++++++++----- sima/utils/configtest.py | 2 +- 2 files changed, 21 insertions(+), 6 deletions(-) diff --git a/sima/plugins/internal/tags.py b/sima/plugins/internal/tags.py index 82abf7f..7566e39 100644 --- a/sima/plugins/internal/tags.py +++ b/sima/plugins/internal/tags.py @@ -52,9 +52,22 @@ def control_config(tags_config): return True -def forge_filter(cfg): +def forge_filter(cfg, logger): + """forge_filter merges tags config and user defined MPD filter into a single + MPD filter""" tags = set(cfg.keys()) & Tags.supported_tags cfg_filter = cfg.get('filter', None) + # Remove external enclosing parentheses in user defined MPD filter, for + # instance when there is more than one expression: + # ((genre == 'rock' ) AND (date =~ '198.')) + # Even though it's a valid MPD filter, forge_filter will enclose it + # properly. We do not want to through a syntax error at users since it's a + # valid MPD filter, hence trying to transparently reformat the filter + if cfg_filter.startswith('((') and cfg_filter.endswith('))'): + logger.debug('Drop external enclosing parentheses in user filter: %s', + cfg_filter[1:-1]) + cfg['filter'] = cfg_filter[1:-1] + cfg_filter = cfg['filter'] mpd_filter = [] if cfg_filter: mpd_filter.append(cfg_filter) @@ -82,7 +95,7 @@ class Tags(AdvancedPlugin): def __init__(self, daemon): super().__init__(daemon) self._control_conf() - self.mpd_filter = forge_filter(self.plugin_conf) + self.mpd_filter = forge_filter(self.plugin_conf, self.log) self._setup_tagsneeded() self.log.debug('mpd filter: %s', self.mpd_filter) @@ -110,12 +123,14 @@ class Tags(AdvancedPlugin): 'Need at least MPD 0.21 to use Tags plugin (filters required)') self.player.disconnect() raise PluginException('MPD >= 0.21 required') + if not self.plugin_conf['filter']: + return # Check filter is valid try: - if self.plugin_conf['filter']: - # Use window to limit response size - self.player.find(self.plugin_conf['filter'], "window", (0, 1)) + # Use window to limit response size + self.player.find(self.mpd_filter, "window", (0, 1)) except CommandError as err: + self.log.warning(err) raise PluginException('Badly formated filter in tags plugin configuration: "%s"' % self.plugin_conf['filter']) from err diff --git a/sima/utils/configtest.py b/sima/utils/configtest.py index f1c6a1a..2ffd99f 100644 --- a/sima/utils/configtest.py +++ b/sima/utils/configtest.py @@ -31,7 +31,7 @@ def tags_config_test(cli, config): tags_cfg = config['tags'] if not control_config(tags_cfg): return - filt = forge_filter(tags_cfg) + filt = forge_filter(tags_cfg, log) log.info('Trying tags and filter config') log.debug('Complete filter (tag+filter): %s', filt) try: -- 2.39.2