[3] | 1 | """irclog -- an IRC log beautifier for the Trac wiki""" |
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| 2 | |
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| 3 | # Copyright (c) 2005, Simon E. Ward |
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| 4 | # Copyright (c) 2005, Marius Gedminas |
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| 5 | # Copyright (c) 2000, Jeffrey W. Waugh |
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| 6 | |
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| 7 | # Trac Wiki-Processor: |
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| 8 | # Simon Ward <simon@mivok.net> |
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| 9 | # Python port: |
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| 10 | # Marius Gedminas <marius@pov.lt> |
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| 11 | # Original Author: |
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| 12 | # Jeff Waugh <jdub@perkypants.org> |
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| 13 | # Contributors: |
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| 14 | # Rick Welykochy <rick@praxis.com.au> |
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| 15 | # Alexander Else <aelse@uu.net> |
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| 16 | # |
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| 17 | # Released under the terms of the GNU GPL |
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| 18 | # http://www.gnu.org/copyleft/gpl.html |
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| 19 | |
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| 20 | import re |
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| 21 | from StringIO import StringIO |
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| 22 | |
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| 23 | IRCLOG2HTML_VERSION = "2.3" |
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| 24 | IRCLOG2HTML_RELEASE = "2005-03-28" |
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| 25 | |
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| 26 | URL_REGEXP = re.compile(r'((http|https|ftp|gopher|news)://[^ \'")>]*)') |
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| 27 | |
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| 28 | def createlinks(text): |
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| 29 | """Replace possible URLs with links.""" |
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| 30 | return URL_REGEXP.sub(r'<a href="\1">\1</a>', text) |
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| 31 | |
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| 32 | def escape(s): |
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| 33 | """Replace ampersands, pointies, control characters. |
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| 34 | |
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| 35 | >>> escape('Hello & <world>') |
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| 36 | 'Hello & <world>' |
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| 37 | >>> escape('Hello & <world>') |
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| 38 | 'Hello & <world>' |
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| 39 | |
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| 40 | Control characters (ASCII 0 to 31) are stripped away |
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| 41 | |
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| 42 | >>> escape(''.join([chr(x) for x in range(32)])) |
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| 43 | '' |
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| 44 | |
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| 45 | """ |
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| 46 | s = s.replace('&', '&').replace('<', '<').replace('>', '>') |
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| 47 | return ''.join([c for c in s if ord(c) > 0x1F]) |
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| 48 | |
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| 49 | def shorttime(time): |
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| 50 | """Strip date and seconds from time. |
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| 51 | |
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| 52 | >>> shorttime('12:45:17') |
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| 53 | '12:45' |
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| 54 | >>> shorttime('12:45') |
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| 55 | '12:45' |
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| 56 | >>> shorttime('2005-02-04T12:45') |
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| 57 | '12:45' |
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| 58 | |
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| 59 | """ |
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| 60 | if 'T' in time: |
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| 61 | time = time.split('T')[-1] |
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| 62 | elif ' ' in time: |
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| 63 | time = time.split(' ')[-1] |
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| 64 | if time.count(':') > 1: |
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| 65 | time = ':'.join(time.split(':')[:2]) |
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| 66 | return time |
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| 67 | |
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| 68 | |
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| 69 | class Enum(object): |
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| 70 | """Enumerated value.""" |
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| 71 | |
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| 72 | def __init__(self, value): |
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| 73 | self.value = value |
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| 74 | |
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| 75 | def __repr__(self): |
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| 76 | return self.value |
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| 77 | |
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| 78 | |
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| 79 | class LogParser(object): |
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| 80 | """Parse an IRC log file. |
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| 81 | |
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| 82 | When iterated, yields the following events: |
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| 83 | |
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| 84 | time, COMMENT, (nick, text) |
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| 85 | time, ACTION, text |
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| 86 | time, JOIN, text |
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| 87 | time, PART, text, |
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| 88 | time, NICKCHANGE, (text, oldnick, newnick) |
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| 89 | time, SERVER, text |
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| 90 | |
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| 91 | """ |
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| 92 | |
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| 93 | COMMENT = Enum('COMMENT') |
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| 94 | ACTION = Enum('ACTION') |
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| 95 | JOIN = Enum('JOIN') |
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| 96 | PART = Enum('PART') |
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| 97 | NICKCHANGE = Enum('NICKCHANGE') |
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| 98 | SERVER = Enum('SERVER') |
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| 99 | OTHER = Enum('OTHER') |
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| 100 | |
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| 101 | TIME_REGEXP = re.compile( |
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| 102 | r'^\[?(' # Optional [ |
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| 103 | r'(?:\d{4}-\d{2}-\d{2}T|\d{2}-\w{3}-\d{4} |\w{3} \d{2} )?' |
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| 104 | # Optional date |
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| 105 | r'\d\d:\d\d(:\d\d)?' # Mandatory HH:MM, optional :SS |
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| 106 | r')\]? +') # Optional ], mandatory space |
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| 107 | NICK_REGEXP = re.compile(r'^(?:<(.*?)>|([a-zA-Z\[\\\]^_`{|}][a-zA-Z0-9\[\\\]^_`{|}-]+))\s') |
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| 108 | JOIN_REGEXP = re.compile(r'^(?:\*\*\*|-->)\s.*joined') |
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| 109 | PART_REGEXP = re.compile(r'^(?:\*\*\*|<--)\s.*(quit|left)') |
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| 110 | SERVMSG_REGEXP = re.compile(r'^(?:\*\*\*|---)\s') |
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| 111 | NICK_CHANGE_REGEXP = re.compile( |
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| 112 | r'^(?:\*\*\*|---)\s+(.*?) (?:are|is) now known as (.*)') |
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| 113 | |
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| 114 | def __init__(self, infile): |
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| 115 | self.infile = infile |
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| 116 | |
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| 117 | def __iter__(self): |
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| 118 | for line in self.infile: |
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| 119 | line = line.rstrip('\r\n') |
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| 120 | if not line: |
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| 121 | continue |
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| 122 | |
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| 123 | m = self.TIME_REGEXP.match(line) |
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| 124 | if m: |
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| 125 | time = m.group(1) |
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| 126 | line = line[len(m.group(0)):] |
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| 127 | else: |
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| 128 | time = None |
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| 129 | |
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| 130 | m = self.NICK_REGEXP.match(line) |
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| 131 | if m: |
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| 132 | nick = m.group(1) or m.group(2) |
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| 133 | text = line[len(m.group(0)):] |
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| 134 | yield time, self.COMMENT, (nick, text) |
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| 135 | elif line.startswith('* ') or line.startswith('*\t'): |
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| 136 | yield time, self.ACTION, line |
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| 137 | elif self.JOIN_REGEXP.match(line): |
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| 138 | yield time, self.JOIN, line |
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| 139 | elif self.PART_REGEXP.match(line): |
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| 140 | yield time, self.PART, line |
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| 141 | else: |
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| 142 | m = self.NICK_CHANGE_REGEXP.match(line) |
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| 143 | if m: |
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| 144 | oldnick = m.group(1) |
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| 145 | newnick = m.group(2) |
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| 146 | yield time, self.NICKCHANGE, (line, oldnick, newnick) |
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| 147 | elif self.SERVMSG_REGEXP.match(line): |
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| 148 | yield time, self.SERVER, line |
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| 149 | else: |
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| 150 | yield time, self.OTHER, line |
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| 151 | |
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| 152 | |
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| 153 | class NickClassifier(object): |
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| 154 | """Assign style classes to nicknames.""" |
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| 155 | |
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| 156 | def __init__(self, maxclasses=30, default_classes=None): |
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| 157 | self.nickcount = 0 |
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| 158 | self.maxclasses = maxclasses |
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| 159 | self.nick_classes = {} |
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| 160 | if default_classes: |
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| 161 | self.nick_classes.update(default_classes) |
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| 162 | |
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| 163 | def __getitem__(self, nick): |
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| 164 | cls = self.nick_classes.get(nick) |
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| 165 | if not cls: |
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| 166 | self.nickcount += 1 |
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| 167 | fieldlen = len(str(self.maxclasses)) |
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| 168 | cls = ('nc%%0%dd' % fieldlen) % (self.nickcount % self.maxclasses) |
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| 169 | self.nick_classes[nick] = cls |
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| 170 | return cls |
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| 171 | |
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| 172 | def change(self, oldnick, newnick): |
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| 173 | if oldnick in self.nick_classes: |
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| 174 | self.nick_classes[newnick] = self.nick_classes.pop(oldnick) |
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| 175 | |
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| 176 | |
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| 177 | class AbstractStyle(object): |
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| 178 | """A style defines the way output is formatted. |
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| 179 | |
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| 180 | This is not a real class, rather it is an description of how style |
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| 181 | classes should be written. |
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| 182 | """ |
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| 183 | |
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| 184 | name = "stylename" |
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| 185 | description = "Single-line description" |
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| 186 | |
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| 187 | def __init__(self, outfile, classes=None): |
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| 188 | """Create a text formatter for writing to outfile. |
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| 189 | |
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| 190 | `classes` may have the following attributes: |
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| 191 | part |
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| 192 | join |
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| 193 | server |
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| 194 | nickchange |
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| 195 | action |
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| 196 | """ |
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| 197 | self.outfile = outfile |
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| 198 | self.classes = classes or {} |
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| 199 | |
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| 200 | def servermsg(self, time, what, line): |
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| 201 | """Output a generic server message. |
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| 202 | |
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| 203 | `time` is a string. |
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| 204 | `line` is not escaped. |
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| 205 | `what` is one of LogParser event constants (e.g. LogParser.JOIN). |
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| 206 | """ |
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| 207 | |
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| 208 | def nicktext(self, time, nick, text, htmlclass): |
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| 209 | """Output a comment uttered by someone. |
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| 210 | |
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| 211 | `time` is a string. |
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| 212 | `nick` and `text` are not escaped. |
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| 213 | `htmlclass` is a string. |
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| 214 | """ |
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| 215 | |
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| 216 | |
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| 217 | class XHTMLStyle(AbstractStyle): |
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| 218 | """Text style, produces XHTML that can be styled with CSS""" |
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| 219 | |
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| 220 | name = 'xhtml' |
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| 221 | description = __doc__ |
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| 222 | |
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| 223 | CLASSMAP = { |
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| 224 | LogParser.ACTION: 'action', |
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| 225 | LogParser.JOIN: 'join', |
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| 226 | LogParser.PART: 'part', |
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| 227 | LogParser.NICKCHANGE: 'nickchange', |
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| 228 | LogParser.SERVER: 'servermsg', |
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| 229 | LogParser.OTHER: 'other', |
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| 230 | } |
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| 231 | |
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| 232 | prefix = '<div class="irclog">' |
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| 233 | suffix = """</div> |
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| 234 | <div class="generatedby"> |
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| 235 | <p>Generated by irclog wiki-processor |
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| 236 | (<a href="mailto:simon@mivok.net">Simon Ward</a>), |
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| 237 | based on irclog2html.py %(VERSION)s by |
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| 238 | <a href="mailto:marius@pov.lt">Marius Gedminas</a> |
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| 239 | - find it at <a href="http://mg.pov.lt/irclog2html/">mg.pov.lt</a>!</p> |
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| 240 | </div> """ % { 'VERSION': IRCLOG2HTML_VERSION } |
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| 241 | |
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| 242 | def link(self, url, title): |
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| 243 | # Intentionally not escaping title so that &entities; work |
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| 244 | if url: |
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| 245 | print >> self.outfile, ('<a href="%s">%s</a>' |
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| 246 | % (escape(urllib.quote(url)), |
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| 247 | title or escape(url))), |
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| 248 | elif title: |
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| 249 | print >> self.outfile, ('<span class="disabled">%s</span>' |
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| 250 | % title), |
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| 251 | |
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| 252 | def servermsg(self, time, what, text): |
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| 253 | """Output a generic server message. |
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| 254 | |
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| 255 | `time` is a string. |
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| 256 | `line` is not escaped. |
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| 257 | `what` is one of LogParser event constants (e.g. LogParser.JOIN). |
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| 258 | """ |
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| 259 | text = escape(text) |
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| 260 | text = createlinks(text) |
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| 261 | if time: |
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| 262 | displaytime = shorttime(time) |
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| 263 | print >> self.outfile, ('<p id="t%s" class="%s">' |
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| 264 | '<a href="#t%s" class="time">%s</a> ' |
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| 265 | '%s</p>' |
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| 266 | % (time, self.CLASSMAP[what], time, |
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| 267 | displaytime, text)) |
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| 268 | else: |
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| 269 | print >> self.outfile, ('<p class="%s">%s</p>' |
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| 270 | % (self.CLASSMAP[what], text)) |
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| 271 | |
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| 272 | def nicktext(self, time, nick, text, htmlclass): |
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| 273 | """Output a comment uttered by someone. |
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| 274 | |
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| 275 | `time` is a string. |
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| 276 | `nick` and `text` are not escaped. |
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| 277 | `htmlclass` is a string. |
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| 278 | """ |
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| 279 | nick = escape(nick) |
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| 280 | text = escape(text) |
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| 281 | text = createlinks(text) |
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| 282 | text = text.replace(' ', ' ') |
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| 283 | if time: |
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| 284 | displaytime = shorttime(time) |
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| 285 | print >> self.outfile, ('<p id="t%s" class="comment %s">' |
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| 286 | '<a href="#t%s" class="time">%s</a> ' |
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| 287 | '<span class="nick"><%s></span>' |
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| 288 | ' <span class="text">%s</span></p>' |
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| 289 | % (time, htmlclass, time, displaytime, |
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| 290 | nick, text)) |
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| 291 | else: |
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| 292 | print >> self.outfile, ('<p class="comment %s">' |
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| 293 | '<span class="nick"><%s></span>' |
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| 294 | ' <span class="text">%s</span></p>' |
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| 295 | % (htmlclass, nick, text)) |
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| 296 | |
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| 297 | |
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| 298 | class XHTMLTableStyle(XHTMLStyle): |
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| 299 | """Table style, produces XHTML that can be styled with CSS""" |
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| 300 | |
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| 301 | name = 'xhtmltable' |
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| 302 | description = __doc__ |
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| 303 | |
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| 304 | prefix = '<table class="irclog">' |
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| 305 | suffix = '</table>' |
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| 306 | |
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| 307 | def servermsg(self, time, what, text): |
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| 308 | text = escape(text) |
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| 309 | text = createlinks(text) |
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| 310 | if time: |
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| 311 | displaytime = shorttime(time) |
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| 312 | print >> self.outfile, ('<tr id="t%s">' |
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| 313 | '<td class="%s" colspan="2">%s</td>' |
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| 314 | '<td><a href="#t%s" class="time">%s</a></td>' |
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| 315 | '</tr>' |
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| 316 | % (time, self.CLASSMAP[what], text, |
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| 317 | time, displaytime)) |
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| 318 | else: |
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| 319 | print >> self.outfile, ('<tr>' |
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| 320 | '<td class="%s" colspan="3">%s</td>' |
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| 321 | '</tr>' |
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| 322 | % (self.CLASSMAP[what], text)) |
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| 323 | |
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| 324 | def nicktext(self, time, nick, text, htmlclass): |
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| 325 | nick = escape(nick) |
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| 326 | text = escape(text) |
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| 327 | text = createlinks(text) |
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| 328 | text = text.replace(' ', ' ') |
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| 329 | if time: |
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| 330 | displaytime = shorttime(time) |
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| 331 | print >> self.outfile, ('<tr class="%s" id="t%s">' |
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| 332 | '<th class="nick">%s</th>' |
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| 333 | '<td class="text">%s</td>' |
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| 334 | '<td class="time">' |
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| 335 | '<a href="#t%s" class="time">%s</a></td>' |
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| 336 | '</tr>' |
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| 337 | % (htmlclass, time, nick, text, |
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| 338 | time, displaytime)) |
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| 339 | else: |
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| 340 | print >> self.outfile, ('<tr class="%s">' |
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| 341 | '<th class="nick">%s</th>' |
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| 342 | '<td class="text" colspan="2">%s</td>' |
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| 343 | '</tr>' % (htmlclass, nick, text)) |
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| 344 | |
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| 345 | |
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| 346 | def execute(hdf, text, env): |
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| 347 | textbuf = StringIO(text) |
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| 348 | htmlbuf = StringIO() |
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| 349 | |
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| 350 | parser = LogParser(textbuf) |
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| 351 | formatter = XHTMLTableStyle(htmlbuf) |
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| 352 | nick_classes = NickClassifier(maxclasses=20) |
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| 353 | htmlbuf.write(formatter.prefix) |
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| 354 | for time, what, info in parser: |
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| 355 | if what == LogParser.COMMENT: |
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| 356 | nick, text = info |
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| 357 | nickclass = nick_classes[nick] |
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| 358 | formatter.nicktext(time, nick, text, nickclass) |
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| 359 | else: |
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| 360 | if what == LogParser.NICKCHANGE: |
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| 361 | text, oldnick, newnick = info |
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| 362 | nick_classes.change(oldnick, newnick) |
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| 363 | else: |
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| 364 | text = info |
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| 365 | formatter.servermsg(time, what, text) |
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| 366 | |
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| 367 | # Footer |
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| 368 | htmlbuf.write(formatter.suffix) |
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| 369 | return htmlbuf.getvalue() |
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