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brevity.py
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brevity.py
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# coding=utf-8
from __future__ import unicode_literals, print_function
import re
import sys
import warnings
if sys.version < '3':
pass
else:
xrange = range
TLDS = ['aaa', 'aarp', 'abarth', 'abb', 'abbott', 'abbvie', 'abc', 'able', 'abogado', 'abudhabi', 'ac', 'academy', 'accenture', 'accountant', 'accountants', 'aco', 'active', 'actor', 'ad', 'adac', 'ads', 'adult', 'ae', 'aeg', 'aero', 'aetna', 'af', 'afamilycompany', 'afl', 'africa', 'ag', 'agakhan', 'agency', 'ai', 'aig', 'aigo', 'airbus', 'airforce', 'airtel', 'akdn', 'al', 'alfaromeo', 'alibaba', 'alipay', 'allfinanz', 'allstate', 'ally', 'alsace', 'alstom', 'am', 'americanexpress', 'americanfamily', 'amex', 'amfam', 'amica', 'amsterdam', 'analytics', 'android', 'anquan', 'anz', 'ao', 'aol', 'apartments', 'app', 'apple', 'aq', 'aquarelle', 'ar', 'arab', 'aramco', 'archi', 'army', 'arpa', 'art', 'arte', 'as', 'asda', 'asia', 'associates', 'at', 'athleta', 'attorney', 'au', 'auction', 'audi', 'audible', 'audio', 'auspost', 'author', 'auto', 'autos', 'avianca', 'aw', 'aws', 'ax', 'axa', 'az', 'azure', 'ba', 'baby', 'baidu', 'banamex', 'bananarepublic', 'band', 'bank', 'bar', 'barcelona', 'barclaycard', 'barclays', 'barefoot', 'bargains', 'baseball', 'basketball', 'bauhaus', 'bayern', 'bb', 'bbc', 'bbt', 'bbva', 'bcg', 'bcn', 'bd', 'be', 'beats', 'beauty', 'beer', 'bentley', 'berlin', 'best', 'bestbuy', 'bet', 'bf', 'bg', 'bh', 'bharti', 'bi', 'bible', 'bid', 'bike', 'bing', 'bingo', 'bio', 'biz', 'bj', 'black', 'blackfriday', 'blanco', 'blockbuster', 'blog', 'bloomberg', 'blue', 'bm', 'bms', 'bmw', 'bn', 'bnl', 'bnpparibas', 'bo', 'boats', 'boehringer', 'bofa', 'bom', 'bond', 'boo', 'book', 'booking', 'boots', 'bosch', 'bostik', 'boston', 'bot', 'boutique', 'box', 'br', 'bradesco', 'bridgestone', 'broadway', 'broker', 'brother', 'brussels', 'bs', 'bt', 'budapest', 'bugatti', 'build', 'builders', 'business', 'buy', 'buzz', 'bv', 'bw', 'by', 'bz', 'bzh', 'ca', 'cab', 'cafe', 'cal', 'call', 'calvinklein', 'cam', 'camera', 'camp', 'cancerresearch', 'canon', 'capetown', 'capital', 'capitalone', 'car', 'caravan', 'cards', 'care', 'career', 'careers', 'cars', 'cartier', 'casa', 'case', 'caseih', 'cash', 'casino', 'cat', 'catering', 'catholic', 'cba', 'cbn', 'cbre', 'cbs', 'cc', 'cd', 'ceb', 'center', 'ceo', 'cern', 'cf', 'cfa', 'cfd', 'cg', 'ch', 'chanel', 'channel', 'chase', 'chat', 'cheap', 'chintai', 'christmas', 'chrome', 'chrysler', 'church', 'ci', 'cipriani', 'circle', 'cisco', 'citadel', 'citi', 'citic', 'city', 'cityeats', 'ck', 'cl', 'claims', 'cleaning', 'click', 'clinic', 'clinique', 'clothing', 'cloud', 'club', 'clubmed', 'cm', 'cn', 'co', 'coach', 'codes', 'coffee', 'college', 'cologne', 'com', 'comcast', 'commbank', 'community', 'company', 'compare', 'computer', 'comsec', 'condos', 'construction', 'consulting', 'contact', 'contractors', 'cooking', 'cookingchannel', 'cool', 'coop', 'corsica', 'country', 'coupon', 'coupons', 'courses', 'cr', 'credit', 'creditcard', 'creditunion', 'cricket', 'crown', 'crs', 'cruise', 'cruises', 'csc', 'cu', 'cuisinella', 'cv', 'cw', 'cx', 'cy', 'cymru', 'cyou', 'cz', 'dabur', 'dad', 'dance', 'data', 'date', 'dating', 'datsun', 'day', 'dclk', 'dds', 'de', 'deal', 'dealer', 'deals', 'degree', 'delivery', 'dell', 'deloitte', 'delta', 'democrat', 'dental', 'dentist', 'desi', 'design', 'dev', 'dhl', 'diamonds', 'diet', 'digital', 'direct', 'directory', 'discount', 'discover', 'dish', 'diy', 'dj', 'dk', 'dm', 'dnp', 'do', 'docs', 'doctor', 'dodge', 'dog', 'doha', 'domains', 'dot', 'download', 'drive', 'dtv', 'dubai', 'duck', 'dunlop', 'duns', 'dupont', 'durban', 'dvag', 'dvr', 'dz', 'earth', 'eat', 'ec', 'eco', 'edeka', 'edu', 'education', 'ee', 'eg', 'email', 'emerck', 'energy', 'engineer', 'engineering', 'enterprises', 'epost', 'epson', 'equipment', 'er', 'ericsson', 'erni', 'es', 'esq', 'estate', 'esurance', 'et', 'etisalat', 'eu', 'eurovision', 'eus', 'events', 'everbank', 'exchange', 'expert', 'exposed', 'express', 'extraspace', 'fage', 'fail', 'fairwinds', 'faith', 'family', 'fan', 'fans', 'farm', 'farmers', 'fashion', 'fast', 'fedex', 'feedback', 'ferrari', 'ferrero', 'fi', 'fiat', 'fidelity', 'fido', 'film', 'final', 'finance', 'financial', 'fire', 'firestone', 'firmdale', 'fish', 'fishing', 'fit', 'fitness', 'fj', 'fk', 'flickr', 'flights', 'flir', 'florist', 'flowers', 'fly', 'fm', 'fo', 'foo', 'food', 'foodnetwork', 'football', 'ford', 'forex', 'forsale', 'forum', 'foundation', 'fox', 'fr', 'free', 'fresenius', 'frl', 'frogans', 'frontdoor', 'frontier', 'ftr', 'fujitsu', 'fujixerox', 'fun', 'fund', 'furniture', 'futbol', 'fyi', 'ga', 'gal', 'gallery', 'gallo', 'gallup', 'game', 'games', 'gap', 'garden', 'gb', 'gbiz', 'gd', 'gdn', 'ge', 'gea', 'gent', 'genting', 'george', 'gf', 'gg', 'ggee', 'gh', 'gi', 'gift', 'gifts', 'gives', 'giving', 'gl', 'glade', 'glass', 'gle', 'global', 'globo', 'gm', 'gmail', 'gmbh', 'gmo', 'gmx', 'gn', 'godaddy', 'gold', 'goldpoint', 'golf', 'goo', 'goodhands', 'goodyear', 'goog', 'google', 'gop', 'got', 'gov', 'gp', 'gq', 'gr', 'grainger', 'graphics', 'gratis', 'green', 'gripe', 'grocery', 'group', 'gs', 'gt', 'gu', 'guardian', 'gucci', 'guge', 'guide', 'guitars', 'guru', 'gw', 'gy', 'hair', 'hamburg', 'hangout', 'haus', 'hbo', 'hdfc', 'hdfcbank', 'health', 'healthcare', 'help', 'helsinki', 'here', 'hermes', 'hgtv', 'hiphop', 'hisamitsu', 'hitachi', 'hiv', 'hk', 'hkt', 'hm', 'hn', 'hockey', 'holdings', 'holiday', 'homedepot', 'homegoods', 'homes', 'homesense', 'honda', 'honeywell', 'horse', 'hospital', 'host', 'hosting', 'hot', 'hoteles', 'hotels', 'hotmail', 'house', 'how', 'hr', 'hsbc', 'ht', 'hu', 'hughes', 'hyatt', 'hyundai', 'ibm', 'icbc', 'ice', 'icu', 'id', 'ie', 'ieee', 'ifm', 'ikano', 'il', 'im', 'imamat', 'imdb', 'immo', 'immobilien', 'in', 'industries', 'infiniti', 'info', 'ing', 'ink', 'institute', 'insurance', 'insure', 'int', 'intel', 'international', 'intuit', 'investments', 'io', 'ipiranga', 'iq', 'ir', 'irish', 'is', 'iselect', 'ismaili', 'ist', 'istanbul', 'it', 'itau', 'itv', 'iveco', 'iwc', 'jaguar', 'java', 'jcb', 'jcp', 'je', 'jeep', 'jetzt', 'jewelry', 'jio', 'jlc', 'jll', 'jm', 'jmp', 'jnj', 'jo', 'jobs', 'joburg', 'jot', 'joy', 'jp', 'jpmorgan', 'jprs', 'juegos', 'juniper', 'kaufen', 'kddi', 'ke', 'kerryhotels', 'kerrylogistics', 'kerryproperties', 'kfh', 'kg', 'kh', 'ki', 'kia', 'kim', 'kinder', 'kindle', 'kitchen', 'kiwi', 'km', 'kn', 'koeln', 'komatsu', 'kosher', 'kp', 'kpmg', 'kpn', 'kr', 'krd', 'kred', 'kuokgroup', 'kw', 'ky', 'kyoto', 'kz', 'la', 'lacaixa', 'ladbrokes', 'lamborghini', 'lamer', 'lancaster', 'lancia', 'lancome', 'land', 'landrover', 'lanxess', 'lasalle', 'lat', 'latino', 'latrobe', 'law', 'lawyer', 'lb', 'lc', 'lds', 'lease', 'leclerc', 'lefrak', 'legal', 'lego', 'lexus', 'lgbt', 'li', 'liaison', 'lidl', 'life', 'lifeinsurance', 'lifestyle', 'lighting', 'like', 'lilly', 'limited', 'limo', 'lincoln', 'linde', 'link', 'lipsy', 'live', 'living', 'lixil', 'lk', 'loan', 'loans', 'locker', 'locus', 'loft', 'lol', 'london', 'lotte', 'lotto', 'love', 'lpl', 'lplfinancial', 'lr', 'ls', 'lt', 'ltd', 'ltda', 'lu', 'lundbeck', 'lupin', 'luxe', 'luxury', 'lv', 'ly', 'ma', 'macys', 'madrid', 'maif', 'maison', 'makeup', 'man', 'management', 'mango', 'map', 'market', 'marketing', 'markets', 'marriott', 'marshalls', 'maserati', 'mattel', 'mba', 'mc', 'mckinsey', 'md', 'me', 'med', 'media', 'meet', 'melbourne', 'meme', 'memorial', 'men', 'menu', 'meo', 'merckmsd', 'metlife', 'mg', 'mh', 'miami', 'microsoft', 'mil', 'mini', 'mint', 'mit', 'mitsubishi', 'mk', 'ml', 'mlb', 'mls', 'mm', 'mma', 'mn', 'mo', 'mobi', 'mobile', 'mobily', 'moda', 'moe', 'moi', 'mom', 'monash', 'money', 'monster', 'mopar', 'mormon', 'mortgage', 'moscow', 'moto', 'motorcycles', 'mov', 'movie', 'movistar', 'mp', 'mq', 'mr', 'ms', 'msd', 'mt', 'mtn', 'mtr', 'mu', 'museum', 'mutual', 'mv', 'mw', 'mx', 'my', 'mz', 'na', 'nab', 'nadex', 'nagoya', 'name', 'nationwide', 'natura', 'navy', 'nba', 'nc', 'ne', 'nec', 'net', 'netbank', 'netflix', 'network', 'neustar', 'new', 'newholland', 'news', 'next', 'nextdirect', 'nexus', 'nf', 'nfl', 'ng', 'ngo', 'nhk', 'ni', 'nico', 'nike', 'nikon', 'ninja', 'nissan', 'nissay', 'nl', 'no', 'nokia', 'northwesternmutual', 'norton', 'now', 'nowruz', 'nowtv', 'np', 'nr', 'nra', 'nrw', 'ntt', 'nu', 'nyc', 'nz', 'obi', 'observer', 'off', 'office', 'okinawa', 'olayan', 'olayangroup', 'oldnavy', 'ollo', 'om', 'omega', 'one', 'ong', 'onl', 'online', 'onyourside', 'ooo', 'open', 'oracle', 'orange', 'org', 'organic', 'origins', 'osaka', 'otsuka', 'ott', 'ovh', 'pa', 'page', 'panasonic', 'panerai', 'paris', 'pars', 'partners', 'parts', 'party', 'passagens', 'pay', 'pccw', 'pe', 'pet', 'pf', 'pfizer', 'pg', 'ph', 'pharmacy', 'phd', 'philips', 'phone', 'photo', 'photography', 'photos', 'physio', 'piaget', 'pics', 'pictet', 'pictures', 'pid', 'pin', 'ping', 'pink', 'pioneer', 'pizza', 'pk', 'pl', 'place', 'play', 'playstation', 'plumbing', 'plus', 'pm', 'pn', 'pnc', 'pohl', 'poker', 'politie', 'porn', 'post', 'pr', 'pramerica', 'praxi', 'press', 'prime', 'pro', 'prod', 'productions', 'prof', 'progressive', 'promo', 'properties', 'property', 'protection', 'pru', 'prudential', 'ps', 'pt', 'pub', 'pw', 'pwc', 'py', 'qa', 'qpon', 'quebec', 'quest', 'qvc', 'racing', 'radio', 'raid', 're', 'read', 'realestate', 'realtor', 'realty', 'recipes', 'red', 'redstone', 'redumbrella', 'rehab', 'reise', 'reisen', 'reit', 'reliance', 'ren', 'rent', 'rentals', 'repair', 'report', 'republican', 'rest', 'restaurant', 'review', 'reviews', 'rexroth', 'rich', 'richardli', 'ricoh', 'rightathome', 'ril', 'rio', 'rip', 'rmit', 'ro', 'rocher', 'rocks', 'rodeo', 'rogers', 'room', 'rs', 'rsvp', 'ru', 'rugby', 'ruhr', 'run', 'rw', 'rwe', 'ryukyu', 'sa', 'saarland', 'safe', 'safety', 'sakura', 'sale', 'salon', 'samsclub', 'samsung', 'sandvik', 'sandvikcoromant', 'sanofi', 'sap', 'sapo', 'sarl', 'sas', 'save', 'saxo', 'sb', 'sbi', 'sbs', 'sc', 'sca', 'scb', 'schaeffler', 'schmidt', 'scholarships', 'school', 'schule', 'schwarz', 'science', 'scjohnson', 'scor', 'scot', 'sd', 'se', 'search', 'seat', 'secure', 'security', 'seek', 'select', 'sener', 'services', 'ses', 'seven', 'sew', 'sex', 'sexy', 'sfr', 'sg', 'sh', 'shangrila', 'sharp', 'shaw', 'shell', 'shia', 'shiksha', 'shoes', 'shop', 'shopping', 'shouji', 'show', 'showtime', 'shriram', 'si', 'silk', 'sina', 'singles', 'site', 'sj', 'sk', 'ski', 'skin', 'sky', 'skype', 'sl', 'sling', 'sm', 'smart', 'smile', 'sn', 'sncf', 'so', 'soccer', 'social', 'softbank', 'software', 'sohu', 'solar', 'solutions', 'song', 'sony', 'soy', 'space', 'spiegel', 'spot', 'spreadbetting', 'sr', 'srl', 'srt', 'st', 'stada', 'staples', 'star', 'starhub', 'statebank', 'statefarm', 'statoil', 'stc', 'stcgroup', 'stockholm', 'storage', 'store', 'stream', 'studio', 'study', 'style', 'su', 'sucks', 'supplies', 'supply', 'support', 'surf', 'surgery', 'suzuki', 'sv', 'swatch', 'swiftcover', 'swiss', 'sx', 'sy', 'sydney', 'symantec', 'systems', 'sz', 'tab', 'taipei', 'talk', 'taobao', 'target', 'tatamotors', 'tatar', 'tattoo', 'tax', 'taxi', 'tc', 'tci', 'td', 'tdk', 'team', 'tech', 'technology', 'tel', 'telecity', 'telefonica', 'temasek', 'tennis', 'teva', 'tf', 'tg', 'th', 'thd', 'theater', 'theatre', 'tiaa', 'tickets', 'tienda', 'tiffany', 'tips', 'tires', 'tirol', 'tj', 'tjmaxx', 'tjx', 'tk', 'tkmaxx', 'tl', 'tm', 'tmall', 'tn', 'to', 'today', 'tokyo', 'tools', 'top', 'toray', 'toshiba', 'total', 'tours', 'town', 'toyota', 'toys', 'tr', 'trade', 'trading', 'training', 'travel', 'travelchannel', 'travelers', 'travelersinsurance', 'trust', 'trv', 'tt', 'tube', 'tui', 'tunes', 'tushu', 'tv', 'tvs', 'tw', 'tz', 'ua', 'ubank', 'ubs', 'uconnect', 'ug', 'uk', 'unicom', 'university', 'uno', 'uol', 'ups', 'us', 'uy', 'uz', 'va', 'vacations', 'vana', 'vanguard', 'vc', 've', 'vegas', 'ventures', 'verisign', 'versicherung', 'vet', 'vg', 'vi', 'viajes', 'video', 'vig', 'viking', 'villas', 'vin', 'vip', 'virgin', 'visa', 'vision', 'vista', 'vistaprint', 'viva', 'vivo', 'vlaanderen', 'vn', 'vodka', 'volkswagen', 'volvo', 'vote', 'voting', 'voto', 'voyage', 'vu', 'vuelos', 'wales', 'walmart', 'walter', 'wang', 'wanggou', 'warman', 'watch', 'watches', 'weather', 'weatherchannel', 'webcam', 'weber', 'website', 'wed', 'wedding', 'weibo', 'weir', 'wf', 'whoswho', 'wien', 'wiki', 'williamhill', 'win', 'windows', 'wine', 'winners', 'wme', 'wolterskluwer', 'woodside', 'work', 'works', 'world', 'wow', 'ws', 'wtc', 'wtf', 'xbox', 'xerox', 'xfinity', 'xihuan', 'xin', 'xn--11b4c3d', 'xn--1ck2e1b', 'xn--1qqw23a', 'xn--2scrj9c', 'xn--30rr7y', 'xn--3bst00m', 'xn--3ds443g', 'xn--3e0b707e', 'xn--3hcrj9c', 'xn--3oq18vl8pn36a', 'xn--3pxu8k', 'xn--42c2d9a', 'xn--45br5cyl', 'xn--45brj9c', 'xn--45q11c', 'xn--4gbrim', 'xn--54b7fta0cc', 'xn--55qw42g', 'xn--55qx5d', 'xn--5su34j936bgsg', 'xn--5tzm5g', 'xn--6frz82g', 'xn--6qq986b3xl', 'xn--80adxhks', 'xn--80ao21a', 'xn--80aqecdr1a', 'xn--80asehdb', 'xn--80aswg', 'xn--8y0a063a', 'xn--90a3ac', 'xn--90ae', 'xn--90ais', 'xn--9dbq2a', 'xn--9et52u', 'xn--9krt00a', 'xn--b4w605ferd', 'xn--bck1b9a5dre4c', 'xn--c1avg', 'xn--c2br7g', 'xn--cck2b3b', 'xn--cg4bki', 'xn--clchc0ea0b2g2a9gcd', 'xn--czr694b', 'xn--czrs0t', 'xn--czru2d', 'xn--d1acj3b', 'xn--d1alf', 'xn--e1a4c', 'xn--eckvdtc9d', 'xn--efvy88h', 'xn--estv75g', 'xn--fct429k', 'xn--fhbei', 'xn--fiq228c5hs', 'xn--fiq64b', 'xn--fiqs8s', 'xn--fiqz9s', 'xn--fjq720a', 'xn--flw351e', 'xn--fpcrj9c3d', 'xn--fzc2c9e2c', 'xn--fzys8d69uvgm', 'xn--g2xx48c', 'xn--gckr3f0f', 'xn--gecrj9c', 'xn--gk3at1e', 'xn--h2breg3eve', 'xn--h2brj9c', 'xn--h2brj9c8c', 'xn--hxt814e', 'xn--i1b6b1a6a2e', 'xn--imr513n', 'xn--io0a7i', 'xn--j1aef', 'xn--j1amh', 'xn--j6w193g', 'xn--jlq61u9w7b', 'xn--jvr189m', 'xn--kcrx77d1x4a', 'xn--kprw13d', 'xn--kpry57d', 'xn--kpu716f', 'xn--kput3i', 'xn--l1acc', 'xn--lgbbat1ad8j', 'xn--mgb9awbf', 'xn--mgba3a3ejt', 'xn--mgba3a4f16a', 'xn--mgba7c0bbn0a', 'xn--mgbaakc7dvf', 'xn--mgbaam7a8h', 'xn--mgbab2bd', 'xn--mgbai9azgqp6j', 'xn--mgbayh7gpa', 'xn--mgbb9fbpob', 'xn--mgbbh1a', 'xn--mgbbh1a71e', 'xn--mgbc0a9azcg', 'xn--mgbca7dzdo', 'xn--mgberp4a5d4ar', 'xn--mgbgu82a', 'xn--mgbi4ecexp', 'xn--mgbpl2fh', 'xn--mgbt3dhd', 'xn--mgbtx2b', 'xn--mgbx4cd0ab', 'xn--mix891f', 'xn--mk1bu44c', 'xn--mxtq1m', 'xn--ngbc5azd', 'xn--ngbe9e0a', 'xn--ngbrx', 'xn--node', 'xn--nqv7f', 'xn--nqv7fs00ema', 'xn--nyqy26a', 'xn--o3cw4h', 'xn--ogbpf8fl', 'xn--p1acf', 'xn--p1ai', 'xn--pbt977c', 'xn--pgbs0dh', 'xn--pssy2u', 'xn--q9jyb4c', 'xn--qcka1pmc', 'xn--qxam', 'xn--rhqv96g', 'xn--rovu88b', 'xn--rvc1e0am3e', 'xn--s9brj9c', 'xn--ses554g', 'xn--t60b56a', 'xn--tckwe', 'xn--tiq49xqyj', 'xn--unup4y', 'xn--vermgensberater-ctb', 'xn--vermgensberatung-pwb', 'xn--vhquv', 'xn--vuq861b', 'xn--w4r85el8fhu5dnra', 'xn--w4rs40l', 'xn--wgbh1c', 'xn--wgbl6a', 'xn--xhq521b', 'xn--xkc2al3hye2a', 'xn--xkc2dl3a5ee0h', 'xn--y9a3aq', 'xn--yfro4i67o', 'xn--ygbi2ammx', 'xn--zfr164b', 'xperia', 'xxx', 'xyz', 'yachts', 'yahoo', 'yamaxun', 'yandex', 'ye', 'yodobashi', 'yoga', 'yokohama', 'you', 'youtube', 'yt', 'yun', 'za', 'zappos', 'zara', 'zero', 'zip', 'zippo', 'zm', 'zone', 'zuerich', 'zw']
_SCHEME = r'(?:http|https|file|irc):/{1,3}'
_HOST = r'(?:[a-z0-9][a-z0-9\-]*\.)+(?:' + '|'.join(TLDS) + r')(?::\d{2,6})?'
_PATH = r'/[\w/.\-_~.;:%?!@$#&()=+]*'
LINKIFY_RE = re.compile(r'(?:{scheme})?{host}(?:{path}|\b)'
.format(scheme=_SCHEME, host=_HOST, path=_PATH),
re.VERBOSE | re.UNICODE | re.IGNORECASE)
FORMAT_NOTE = 'note'
FORMAT_ARTICLE = 'article'
DELIMITERS = ',.;: \t\r\n'
# From https://developer.twitter.com/en/docs/developer-utilities/twitter-text
# on 2017-11-18.
WEIGHTS = {
'version': 2,
'maxWeightedTweetLength': 280,
'scale': 100,
'defaultWeight': 200,
'transformedURLLength': 23,
'ranges': [
{'start': 0, 'end': 4351, 'weight': 100},
{'start': 8192, 'end': 8205, 'weight': 100},
{'start': 8208, 'end': 8223, 'weight': 100},
{'start': 8242, 'end': 8247, 'weight': 100},
],
}
class Token:
def __init__(self, tag, content, required=False):
self.tag = tag
self.content = content
self.required = required
def __eq__(self, o):
return self.tag == o.tag \
and self.content == o.content \
and self.required == o.required
def __repr__(self):
return u'Token(tag={}, content={}, required={})'.format(
self.tag, self.content, self.required)
def tokenize(text):
"""Split text into link and non-link text, a list of brevity.Tokens,
tagged with 'text' or 'link' depending on how they should be
interpreted.
:param string text: text to tokenize
:return list: a list of brevity.Tokens
"""
links = LINKIFY_RE.findall(text)
splits = LINKIFY_RE.split(text)
for ii in xrange(len(links)):
# trim trailing punctuation from links
link = links[ii]
jj = len(link) - 1
while (jj >= 0 and link[jj] in '.!?,;:)'
# allow 1 () pair
and (link[jj] != ')' or '(' not in link)):
jj -= 1
links[ii] = link[:jj + 1]
splits[ii + 1] = link[jj + 1:] + splits[ii + 1]
link = links[ii]
# avoid double linking by looking at preceeding 2 chars
prev_text = splits[ii]
next_text = splits[ii + 1]
if (prev_text.rstrip().endswith('="')
or prev_text.rstrip().endswith("='")
or prev_text.endswith('@') or next_text.startswith('@')
or prev_text.endswith('$') or prev_text.endswith('/')
or prev_text.endswith('.') or prev_text.endswith('#')
or prev_text.endswith('_') or prev_text.endswith('-')
or next_text.lstrip().startswith('</a')):
# collapse link into before text
splits[ii] = splits[ii] + links[ii]
links[ii] = None
continue
# compile the tagged tokens
result = []
for ii in xrange(max(len(links), len(splits))):
if ii < len(splits) and splits[ii]:
if result and result[-1].tag == 'text':
# collapse consecutive text tokens
result[-1].content += splits[ii]
else:
result.append(Token('text', splits[ii]))
if ii < len(links) and links[ii]:
result.append(Token('link', links[ii]))
return result
def autolink(text):
"""Add <a> tags around web addresses in an HTML or plain text
document. URLs inside pre-existing HTML elements will be left alone.
:param string text: the text document with addresses to mark up
:return string: the text with addresses replaced by <a> elements
"""
def add_scheme(url):
if (url.startswith('//') or url.startswith('http://')
or url.startswith('https://') or url.startswith('mailto://')
or url.startswith('irc://')):
return url
if url.startswith('Http://') or url.startswith('Https://'):
return 'h' + url[1:]
return 'http://' + url
result = []
for token in tokenize(text):
if token.tag == 'link':
result.append('<a class="auto-link" href="{0}">{1}</a>'.format(
add_scheme(token.content), token.content))
else:
result.append(token.content)
return ''.join(result)
def shorten(text, permalink=None, permashortlink=None, permashortcitation=None,
target_length=WEIGHTS['maxWeightedTweetLength'],
link_length=WEIGHTS['transformedURLLength'],
format=FORMAT_NOTE, ellipsis=u'…', punctuation=(' (', ')')):
"""Prepare note text for publishing as a tweet. Ellipsize and add a
permalink or citation.
If the full text plus optional '(permashortlink)' or
'(permashortcitation)' can fit into the target length (defaults to
280 characters), it will return the composed text.
If format is FORMAT_ARTICLE, text is taken to be the title of a longer
article. It will be formatted as '[text]: [permalink]'. The values of
permashortlink and permashortcitation are ignored in this case.
Otherwise, the text will be shortened to the nearest full word,
with an ellipsis and permalink added at the end. A permalink
should always be provided; otherwise text will be shortened with
no way to find the original.
Note: that the permashortlink does not actually have to be a
"short" URL. It is totally reasonable to provide the same URL for
both the permalink and permashortlink.
:param string text: The full note text that may be ellipsized
:param string permalink: URL of the original note, will only be added if
the text is shortened (optional).
:param string permashortlink: Short URL of the original note, if provided
will be added to the end of all notes. (optional)
:param string permashortcitation: Citation to the original note, e.g.
'ttk.me t4_f2', an alternative to permashortlink. If provided will be
added to the end of all notes. (optional)
:param int target_length: The target overall length (default = 280)
:param int link_length: The t.co length for a URL. If 'None', URLs won't be special cased and will count like normal characters. (default = 23)
:param string format: one of the FORMAT_ constants that determines
whether to format the text like a note or an article (default = FORMAT_NOTE)
:param string ellipsis: The string to append to text when it's truncated (default = '…')
:param tuple(string, string) punctuation: The prefix and suffix strings to enclose the permalink, permashortlink, or permashortcitation with (default = (' (', ')'))
:return string: the final composed text
"""
def truncate_to_nearest_word(text, length):
# try stripping trailing whitespace first
text = text.rstrip()
if str_length(text) <= length:
return text
# walk backwards until we find a delimiter
for j in xrange(len(text) - 1, -1, -1):
if text[j] in DELIMITERS:
trunc = text[:j].rstrip(DELIMITERS)
if str_length(trunc) <= length:
return trunc
# walk backwards ignoring delimiters
for j in xrange(len(text) - 1, -1, -1):
trunc = text[:j]
if str_length(trunc) <= length:
return trunc
warnings.warn('Failed to truncate text "{}" to {} characters. This indicates a logical error'.format(text, length))
return ''
def char_length(char):
point = ord(char)
weight = WEIGHTS['defaultWeight']
for range in WEIGHTS['ranges']:
if point >= range['start'] and point <= range['end']:
weight = range['weight']
return weight // WEIGHTS['scale']
def str_length(val):
return sum(char_length(char) for char in val)
def token_length(token):
if token.tag == 'link' and link_length is not None:
return link_length
return str_length(token.content)
def total_length(tokens):
return sum(token_length(t) for t in tokens)
tokens = tokenize(text)
citation_tokens = []
if FORMAT_ARTICLE in format and permalink:
citation_tokens.append(Token('text', ': ', True))
citation_tokens.append(Token('link', permalink, True))
elif permashortlink:
citation_tokens.append(Token('text', punctuation[0], True))
citation_tokens.append(Token('link', permashortlink, True))
citation_tokens.append(Token('text', punctuation[1], True))
elif permashortcitation:
citation_tokens.append(
Token('text', punctuation[0] + permashortcitation + punctuation[1], True))
if 'media' in format:
print('Brevity: "media" formatting has been removed; Media attachments no longer count against Twitter\'s character limit (https://dev.twitter.com/overview/api/upcoming-changes-to-tweets)', file=sys.stderr)
base_length = total_length(tokens)
citation_length = total_length(citation_tokens)
if base_length + citation_length <= target_length:
tokens += citation_tokens
else:
# add permalink
if permalink:
tokens.append(Token('text', ellipsis + ' ', True))
tokens.append(Token('link', permalink, True))
else:
tokens.append(Token('text', ellipsis, True))
# drop or shorten tokens, starting from the end
for ii in xrange(len(tokens) - 1, -1, -1):
token = tokens[ii]
if token.required:
continue
over = total_length(tokens) - target_length
if over <= 0:
# strip trailing whitespace and punctuation on the last token
if token.tag == 'text':
token.content = token.content.rstrip(DELIMITERS)
break
if token.tag == 'link':
del tokens[ii]
elif token.tag == 'text':
toklen = token_length(token)
if over >= toklen:
del tokens[ii]
else:
token.content = truncate_to_nearest_word(
token.content, toklen - over)
return ''.join(t.content for t in tokens)