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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