f1d7b1472e
This update introduces GUI-based channel database management, allowing users to enable or disable specific country databases for channel matching. Key Changes: - Convert fields from static list to @property method for dynamic database detection - Add _get_channel_databases() method to scan and extract database metadata - Update _load_channels_data() to filter by enabled databases from settings - Support new database format with country_code, country_name, and version metadata - Maintain backward compatibility with legacy array format - Add dynamic checkbox fields for each detected database in plugin settings - Default behavior: US enabled, all others disabled (or enable if only one database exists) - Update fuzzy_matcher.py GEOGRAPHIC_PATTERNS to handle any country code prefix (CC:, CC , CCC:, CCC ) - Add comprehensive README documentation for new database format and GUI management - Include sample CA_channels.json demonstrating new metadata format Features: - Selectable channel databases through GUI settings - Multi-country support with automatic country code prefix handling - Clear database labels showing country name and version in settings - Improved matching accuracy by enabling only relevant regional databases Version: 0.6.0
599 lines
24 KiB
Python
599 lines
24 KiB
Python
"""
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Fuzzy Matcher Module for Dispatcharr Plugins
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Handles fuzzy matching, normalization, and channel database loading.
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Reusable across multiple plugins (Stream-Mapparr, Channel Mapparr, etc.)
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"""
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import os
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import re
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import json
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import logging
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from glob import glob
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# Version: YY.DDD.HHMM (Julian date format: Year.DayOfYear.Time)
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__version__ = "25.313.1157"
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# Setup logging
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LOGGER = logging.getLogger("plugins.fuzzy_matcher")
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# Categorized regex patterns for granular control during fuzzy matching
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# Note: All patterns are applied with re.IGNORECASE flag in normalize_name()
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# Quality-related patterns: [4K], HD, (SD), etc.
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QUALITY_PATTERNS = [
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# Bracketed quality tags: [4K], [UHD], [FHD], [HD], [SD], [Unknown], [Unk], [Slow], [Dead]
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r'\[(4K|UHD|FHD|HD|SD|Unknown|Unk|Slow|Dead)\]',
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r'\[(?:4k|uhd|fhd|hd|sd|unknown|unk|slow|dead)\]',
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# Unbracketed quality tags in middle: " 4K ", " UHD ", " FHD ", " HD ", " SD ", etc.
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r'\s(?:4K|UHD|FHD|HD|SD|Unknown|Unk|Slow|Dead|FD)\s',
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# Unbracketed quality tags at end: " 4K", " UHD", " FHD", " HD", " SD", etc.
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r'\s(?:4K|UHD|FHD|HD|SD|Unknown|Unk|Slow|Dead|FD)$',
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# Word boundary quality tags with optional colon: "4K:", "UHD:", "FHD:", "HD:", etc.
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r'\b(?:4K|UHD|FHD|HD|SD|Unknown|Unk|Slow|Dead|FD):?\s',
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# Parenthesized quality tags: (4K), (UHD), (FHD), (HD), (SD), (Unknown), (Unk), (Slow), (Dead), (Backup)
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r'\s\((4K|UHD|FHD|HD|SD|Unknown|Unk|Slow|Dead|FD|Backup)\)',
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]
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# Regional indicator patterns: East, West, etc.
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REGIONAL_PATTERNS = [
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# Regional: " East" or " east"
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r'\s[Ee][Aa][Ss][Tt]',
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]
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# Geographic prefix patterns: US:, USA:, CA:, UK:, etc.
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GEOGRAPHIC_PATTERNS = [
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# Geographic prefixes at start with colon: "US:", "CA:", "UK:", etc. (any 2-3 letter code followed by colon)
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r'^[A-Z]{2,3}:\s*',
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# Geographic prefixes at start with space: "US ", "CA ", "UK ", etc. (any 2-3 letter code followed by space)
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r'^[A-Z]{2,3}\s+',
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# Legacy USA pattern for backward compatibility
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r'\bUSA?:\s',
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]
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# Miscellaneous patterns: (CX), (Backup), single-letter tags, etc.
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MISC_PATTERNS = [
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# Single letter tags in parentheses: (A), (B), (C), etc.
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r'\([A-Z]\)',
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# Special tags
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r'\s\(CX\)', # Cinemax tag
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# Backup tags
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r'\([bB]ackup\)',
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]
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class FuzzyMatcher:
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"""Handles fuzzy matching for channel and stream names with normalization and database loading."""
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def __init__(self, plugin_dir=None, match_threshold=85, logger=None):
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"""
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Initialize the fuzzy matcher.
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Args:
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plugin_dir: Directory where the plugin and channel JSON files are located (optional)
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match_threshold: Minimum similarity score (0-100) for a match to be accepted
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logger: Logger instance (optional)
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"""
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self.plugin_dir = plugin_dir or os.path.dirname(__file__)
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self.match_threshold = match_threshold
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self.logger = logger or LOGGER
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# Channel data storage
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self.broadcast_channels = [] # Channels with callsigns
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self.premium_channels = [] # Channel names only (for fuzzy matching)
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self.premium_channels_full = [] # Full channel objects with category
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self.channel_lookup = {} # Callsign -> channel data mapping
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# Load all channel databases if plugin_dir is provided
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if self.plugin_dir:
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self._load_channel_databases()
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def _load_channel_databases(self):
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"""Load all *_channels.json files from the plugin directory."""
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pattern = os.path.join(self.plugin_dir, "*_channels.json")
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channel_files = glob(pattern)
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if not channel_files:
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self.logger.warning(f"No *_channels.json files found in {self.plugin_dir}")
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return False
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self.logger.info(f"Found {len(channel_files)} channel database file(s): {[os.path.basename(f) for f in channel_files]}")
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total_broadcast = 0
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total_premium = 0
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for channel_file in channel_files:
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try:
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with open(channel_file, 'r', encoding='utf-8') as f:
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channels_list = json.load(f)
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file_broadcast = 0
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file_premium = 0
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for channel in channels_list:
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channel_type = channel.get('type', '').lower()
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if 'broadcast' in channel_type or channel_type == 'broadcast (ota)':
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# Broadcast channel with callsign
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self.broadcast_channels.append(channel)
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file_broadcast += 1
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# Create lookup by callsign
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callsign = channel.get('callsign', '').strip()
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if callsign:
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self.channel_lookup[callsign] = channel
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# Also store base callsign without suffix for easier matching
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base_callsign = re.sub(r'-(?:TV|CD|LP|DT|LD)$', '', callsign)
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if base_callsign != callsign:
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self.channel_lookup[base_callsign] = channel
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else:
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# Premium/cable/national channel
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channel_name = channel.get('channel_name', '').strip()
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if channel_name:
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self.premium_channels.append(channel_name)
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self.premium_channels_full.append(channel)
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file_premium += 1
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total_broadcast += file_broadcast
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total_premium += file_premium
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self.logger.info(f"Loaded from {os.path.basename(channel_file)}: {file_broadcast} broadcast, {file_premium} premium channels")
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except Exception as e:
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self.logger.error(f"Error loading {channel_file}: {e}")
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self.logger.info(f"Total channels loaded: {total_broadcast} broadcast, {total_premium} premium")
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return True
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def extract_callsign(self, channel_name):
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"""
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Extract US TV callsign from channel name with priority order.
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Returns None if common false positives appear alone.
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"""
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# Remove common prefixes
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channel_name = re.sub(r'^D\d+-', '', channel_name)
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channel_name = re.sub(r'^USA?\s*[^a-zA-Z0-9]*\s*', '', channel_name, flags=re.IGNORECASE)
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# Priority 1: Callsigns in parentheses (most reliable)
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paren_match = re.search(r'\(([KW][A-Z]{3})(?:-[A-Z\s]+)?\)', channel_name, re.IGNORECASE)
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if paren_match:
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callsign = paren_match.group(1).upper()
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if callsign not in ['WEST', 'EAST', 'KIDS', 'WOMEN', 'WILD', 'WORLD']:
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return callsign
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# Priority 2: Callsigns with suffix in parentheses
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paren_suffix_match = re.search(r'\(([KW][A-Z]{2,4}-(?:TV|CD|LP|DT|LD))\)', channel_name, re.IGNORECASE)
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if paren_suffix_match:
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callsign = paren_suffix_match.group(1).upper()
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return callsign
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# Priority 3: Callsigns at the end
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end_match = re.search(r'\b([KW][A-Z]{2,4}(?:-(?:TV|CD|LP|DT|LD))?)\s*(?:\.[a-z]+)?\s*$', channel_name, re.IGNORECASE)
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if end_match:
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callsign = end_match.group(1).upper()
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if callsign not in ['WEST', 'EAST', 'KIDS', 'WOMEN', 'WILD', 'WORLD']:
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return callsign
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# Priority 4: Any word matching callsign pattern
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word_match = re.search(r'\b([KW][A-Z]{2,4}(?:-(?:TV|CD|LP|DT|LD))?)\b', channel_name, re.IGNORECASE)
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if word_match:
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callsign = word_match.group(1).upper()
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if callsign not in ['WEST', 'EAST', 'KIDS', 'WOMEN', 'WILD', 'WORLD']:
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return callsign
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return None
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def normalize_callsign(self, callsign):
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"""Remove suffix from callsign for display."""
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if callsign:
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callsign = re.sub(r'-(?:TV|CD|LP|DT|LD)$', '', callsign)
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return callsign
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def normalize_name(self, name, user_ignored_tags=None, ignore_quality=True, ignore_regional=True,
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ignore_geographic=True, ignore_misc=True, remove_cinemax=False):
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"""
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Normalize channel or stream name for matching by removing tags, prefixes, and other noise.
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Args:
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name: Name to normalize
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user_ignored_tags: Additional user-configured tags to ignore (list of strings)
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ignore_quality: If True, remove quality-related patterns (e.g., [4K], HD, (SD))
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ignore_regional: If True, remove regional indicator patterns (e.g., East)
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ignore_geographic: If True, remove geographic prefix patterns (e.g., US:, USA)
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ignore_misc: If True, remove miscellaneous patterns (e.g., (CX), (Backup), single-letter tags)
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remove_cinemax: If True, remove "Cinemax" prefix (useful when channel name contains "max")
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Returns:
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Normalized name
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"""
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if user_ignored_tags is None:
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user_ignored_tags = []
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# Remove leading parenthetical prefixes like (SP2), (D1), etc.
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name = re.sub(r'^\([^\)]+\)\s*', '', name)
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# Remove "Cinemax" prefix if requested (for channels containing "max")
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if remove_cinemax:
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name = re.sub(r'\bCinemax\b\s*', '', name, flags=re.IGNORECASE)
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# Build list of patterns to apply based on category flags
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patterns_to_apply = []
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if ignore_quality:
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patterns_to_apply.extend(QUALITY_PATTERNS)
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if ignore_regional:
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patterns_to_apply.extend(REGIONAL_PATTERNS)
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if ignore_geographic:
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patterns_to_apply.extend(GEOGRAPHIC_PATTERNS)
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if ignore_misc:
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patterns_to_apply.extend(MISC_PATTERNS)
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# Apply selected hardcoded patterns
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for pattern in patterns_to_apply:
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name = re.sub(pattern, '', name, flags=re.IGNORECASE)
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# Apply user-configured ignored tags with improved handling
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for tag in user_ignored_tags:
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# Check if tag contains brackets or parentheses - if so, match literally
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if '[' in tag or ']' in tag or '(' in tag or ')' in tag:
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# Literal match for bracketed/parenthesized tags
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escaped_tag = re.escape(tag)
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name = re.sub(escaped_tag, '', name, flags=re.IGNORECASE)
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else:
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# Word boundary match for simple word tags to avoid partial matches
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# e.g., "East" won't match the "east" in "Feast"
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escaped_tag = re.escape(tag)
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name = re.sub(r'\b' + escaped_tag + r'\b', '', name, flags=re.IGNORECASE)
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# Remove callsigns in parentheses
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name = re.sub(r'\([KW][A-Z]{3}(?:-(?:TV|CD|LP|DT|LD))?\)', '', name, flags=re.IGNORECASE)
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# Remove other tags in parentheses
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name = re.sub(r'\([A-Z0-9]+\)', '', name)
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# Remove common pattern fixes
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name = re.sub(r'^The\s+', '', name, flags=re.IGNORECASE)
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name = re.sub(r'\s+Network\s*$', '', name, flags=re.IGNORECASE)
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name = re.sub(r'\s+Channel\s*$', '', name, flags=re.IGNORECASE)
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name = re.sub(r'\s+TV\s*$', '', name, flags=re.IGNORECASE)
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# Clean up whitespace
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name = re.sub(r'\s+', ' ', name).strip()
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return name
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def extract_tags(self, name, user_ignored_tags=None):
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"""
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Extract regional indicators, extra tags, and quality tags to preserve them.
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Returns:
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Tuple of (regional, extra_tags, quality_tags)
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"""
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if user_ignored_tags is None:
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user_ignored_tags = []
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regional = None
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extra_tags = []
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quality_tags = []
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# Extract regional indicator
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regional_pattern_paren = r'\((East|West)\)'
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regional_match = re.search(regional_pattern_paren, name, re.IGNORECASE)
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if regional_match:
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regional = regional_match.group(1).capitalize()
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else:
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regional_pattern_word = r'\b(East|West)\b(?!.*\b(East|West)\b)'
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regional_match = re.search(regional_pattern_word, name, re.IGNORECASE)
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if regional_match:
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regional = regional_match.group(1).capitalize()
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# Extract ALL tags in parentheses
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paren_tags = re.findall(r'\(([^\)]+)\)', name)
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first_paren_is_prefix = name.strip().startswith('(') if paren_tags else False
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for idx, tag in enumerate(paren_tags):
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# Skip first tag if it is a prefix
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if idx == 0 and first_paren_is_prefix:
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continue
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# Check if tag should be ignored
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if f"({tag})" in user_ignored_tags or f"[{tag}]" in user_ignored_tags:
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continue
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tag_upper = tag.upper()
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# Skip regional indicators
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if tag_upper in ['EAST', 'WEST']:
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continue
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# Skip callsigns
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if re.match(r'^[KW][A-Z]{3}(?:-(?:TV|CD|LP|DT|LD))?$', tag_upper):
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continue
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extra_tags.append(f"({tag})")
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# Extract ALL quality/bracketed tags
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bracketed_tags = re.findall(r'\[([^\]]+)\]', name)
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for tag in bracketed_tags:
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# Check if tag should be ignored
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if f"[{tag}]" in user_ignored_tags or f"({tag})" in user_ignored_tags:
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continue
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quality_tags.append(f"[{tag}]")
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return regional, extra_tags, quality_tags
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def calculate_similarity(self, str1, str2):
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"""
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Calculate Levenshtein distance-based similarity ratio between two strings.
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Returns:
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Similarity ratio between 0.0 and 1.0
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"""
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if len(str1) < len(str2):
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str1, str2 = str2, str1
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if len(str2) == 0:
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return 1.0 if len(str1) == 0 else 0.0
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previous_row = list(range(len(str2) + 1))
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for i, c1 in enumerate(str1):
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current_row = [i + 1]
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for j, c2 in enumerate(str2):
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insertions = previous_row[j + 1] + 1
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deletions = current_row[j] + 1
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substitutions = previous_row[j] + (c1 != c2)
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current_row.append(min(insertions, deletions, substitutions))
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previous_row = current_row
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distance = previous_row[-1]
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total_len = len(str1) + len(str2)
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if total_len == 0:
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return 1.0
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ratio = (total_len - distance) / total_len
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return ratio
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def process_string_for_matching(self, s):
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"""
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Normalize a string for token-sort fuzzy matching.
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Lowercases, removes punctuation, sorts tokens.
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"""
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s = s.lower()
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# Replace non-alphanumeric with space
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cleaned_s = ""
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for char in s:
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if 'a' <= char <= 'z' or '0' <= char <= '9':
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cleaned_s += char
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else:
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cleaned_s += ' '
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# Split, sort, and rejoin
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tokens = sorted([token for token in cleaned_s.split() if token])
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return " ".join(tokens)
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def find_best_match(self, query_name, candidate_names, user_ignored_tags=None, remove_cinemax=False):
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"""
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Find the best fuzzy match for a name among a list of candidate names.
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Args:
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query_name: Name to match
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candidate_names: List of candidate names to match against
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user_ignored_tags: User-configured tags to ignore
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remove_cinemax: If True, remove "Cinemax" from candidate names
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Returns:
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Tuple of (matched_name, score) or (None, 0) if no match found
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"""
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if not candidate_names:
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return None, 0
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if user_ignored_tags is None:
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user_ignored_tags = []
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# Normalize the query (channel name - don't remove Cinemax from it)
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normalized_query = self.normalize_name(query_name, user_ignored_tags)
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if not normalized_query:
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return None, 0
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# Process query for token-sort matching
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processed_query = self.process_string_for_matching(normalized_query)
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best_score = -1.0
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best_match = None
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for candidate in candidate_names:
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# Normalize candidate (stream name) with Cinemax removal if requested
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candidate_normalized = self.normalize_name(candidate, user_ignored_tags, remove_cinemax=remove_cinemax)
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processed_candidate = self.process_string_for_matching(candidate_normalized)
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score = self.calculate_similarity(processed_query, processed_candidate)
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if score > best_score:
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best_score = score
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best_match = candidate
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# Convert to percentage and check threshold
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percentage_score = int(best_score * 100)
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if percentage_score >= self.match_threshold:
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return best_match, percentage_score
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return None, 0
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def fuzzy_match(self, query_name, candidate_names, user_ignored_tags=None, remove_cinemax=False):
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"""
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Generic fuzzy matching function that can match any name against a list of candidates.
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This is the main entry point for fuzzy matching.
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Args:
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query_name: Name to match (channel name)
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candidate_names: List of candidate names to match against (stream names)
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user_ignored_tags: User-configured tags to ignore
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remove_cinemax: If True, remove "Cinemax" from candidate names (for channels with "max")
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Returns:
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Tuple of (matched_name, score, match_type) or (None, 0, None) if no match found
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"""
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if not candidate_names:
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return None, 0, None
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if user_ignored_tags is None:
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user_ignored_tags = []
|
|
|
|
# Normalize query (channel name - don't remove Cinemax from it)
|
|
normalized_query = self.normalize_name(query_name, user_ignored_tags)
|
|
|
|
if not normalized_query:
|
|
return None, 0, None
|
|
|
|
best_match = None
|
|
best_ratio = 0
|
|
match_type = None
|
|
|
|
# Stage 1: Exact match (after normalization)
|
|
normalized_query_lower = normalized_query.lower()
|
|
normalized_query_nospace = re.sub(r'[\s&\-]+', '', normalized_query_lower)
|
|
|
|
for candidate in candidate_names:
|
|
# Normalize candidate (stream name) with Cinemax removal if requested
|
|
candidate_normalized = self.normalize_name(candidate, user_ignored_tags, remove_cinemax=remove_cinemax)
|
|
candidate_lower = candidate_normalized.lower()
|
|
candidate_nospace = re.sub(r'[\s&\-]+', '', candidate_lower)
|
|
|
|
# Exact match
|
|
if normalized_query_nospace == candidate_nospace:
|
|
return candidate, 100, "exact"
|
|
|
|
# Very high similarity (97%+)
|
|
ratio = self.calculate_similarity(normalized_query_lower, candidate_lower)
|
|
if ratio >= 0.97 and ratio > best_ratio:
|
|
best_match = candidate
|
|
best_ratio = ratio
|
|
match_type = "exact"
|
|
|
|
if best_match:
|
|
return best_match, int(best_ratio * 100), match_type
|
|
|
|
# Stage 2: Substring matching
|
|
for candidate in candidate_names:
|
|
# Normalize candidate (stream name) with Cinemax removal if requested
|
|
candidate_normalized = self.normalize_name(candidate, user_ignored_tags, remove_cinemax=remove_cinemax)
|
|
candidate_lower = candidate_normalized.lower()
|
|
|
|
# Check if one is a substring of the other
|
|
if normalized_query_lower in candidate_lower or candidate_lower in normalized_query_lower:
|
|
# Calculate similarity score
|
|
ratio = self.calculate_similarity(normalized_query_lower, candidate_lower)
|
|
if ratio > best_ratio:
|
|
best_match = candidate
|
|
best_ratio = ratio
|
|
match_type = "substring"
|
|
|
|
if best_match and int(best_ratio * 100) >= self.match_threshold:
|
|
return best_match, int(best_ratio * 100), match_type
|
|
|
|
# Stage 3: Fuzzy matching with token sorting
|
|
fuzzy_match, score = self.find_best_match(query_name, candidate_names, user_ignored_tags, remove_cinemax=remove_cinemax)
|
|
if fuzzy_match:
|
|
return fuzzy_match, score, f"fuzzy ({score})"
|
|
|
|
return None, 0, None
|
|
|
|
def match_broadcast_channel(self, channel_name):
|
|
"""
|
|
Match broadcast (OTA) channel by callsign.
|
|
|
|
Args:
|
|
channel_name: Channel name potentially containing a callsign
|
|
|
|
Returns:
|
|
Tuple of (callsign, station_data) or (None, None) if no match
|
|
"""
|
|
callsign = self.extract_callsign(channel_name)
|
|
|
|
if not callsign:
|
|
return None, None
|
|
|
|
# Try exact match first
|
|
station = self.channel_lookup.get(callsign)
|
|
|
|
if station:
|
|
return callsign, station
|
|
|
|
# Try base callsign (without suffix)
|
|
base_callsign = self.normalize_callsign(callsign)
|
|
station = self.channel_lookup.get(base_callsign)
|
|
|
|
if station:
|
|
return callsign, station
|
|
|
|
return callsign, None
|
|
|
|
def get_category_for_channel(self, channel_name, user_ignored_tags=None):
|
|
"""
|
|
Get the category for a channel by matching it in the database.
|
|
|
|
Args:
|
|
channel_name: Channel name to look up
|
|
user_ignored_tags: User-configured tags to ignore
|
|
|
|
Returns:
|
|
Category string or None if not found
|
|
"""
|
|
if user_ignored_tags is None:
|
|
user_ignored_tags = []
|
|
|
|
# Try broadcast channel first
|
|
callsign, station = self.match_broadcast_channel(channel_name)
|
|
if station:
|
|
return station.get('category')
|
|
|
|
# Try premium channel matching
|
|
if self.premium_channels:
|
|
matched_name, score, match_type = self.fuzzy_match(
|
|
channel_name,
|
|
self.premium_channels,
|
|
user_ignored_tags
|
|
)
|
|
|
|
if matched_name:
|
|
# Find the full channel object
|
|
for channel_obj in self.premium_channels_full:
|
|
if channel_obj.get('channel_name') == matched_name:
|
|
return channel_obj.get('category')
|
|
|
|
return None
|
|
|
|
def build_final_channel_name(self, base_name, regional, extra_tags, quality_tags):
|
|
"""
|
|
Build final channel name with regional indicator, extra tags, and quality tags.
|
|
Format: "Channel Name Regional (Extra) [Quality1] [Quality2] ..."
|
|
"""
|
|
parts = [base_name]
|
|
|
|
# Add regional indicator WITHOUT parentheses
|
|
if regional:
|
|
parts.append(regional)
|
|
|
|
# Add extra tags (already have parentheses)
|
|
if extra_tags:
|
|
parts.extend(extra_tags)
|
|
|
|
# Add quality tags (preserve original case and count)
|
|
if quality_tags:
|
|
parts.extend(quality_tags)
|
|
|
|
return " ".join(parts)
|