Mercurial > cpython-lru_cache-weakref

annotate Misc/faq2html.py @ 4566:6403c94de50d legacy-trunk

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Added safeguard against failure in __del__.
author Guido van Rossum <guido@python.org>
date Wed, 27 Nov 1996 19:39:58 +0000
parents 8892da9554a5
children 73758db2f464
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 #!/usr/local/bin/python
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2
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3 # A somewhat-generalized FAQ-to-HTML converter (by Ka-Ping Yee, 10 Sept 96)
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4
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5 # Reads a text file given on standard input or named as first argument, and
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6 # generates HTML 2.0 on standard output. Recognizes these constructions:
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7 #
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8 # HTML element pattern at the beginning of a line
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9 #
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10 # section heading (<number><period>)+<space>
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11 # numbered list element <1-2 spaces>(<number><period>)+<space>
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12 # unnumbered list element <0-2 spaces><hyphen or asterisk><space>
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13 # preformatted section <more than two spaces>
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14 #
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15 # Heading level is determined by the number of (<number><period>) segments.
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16 # Blank lines force a separation of elements; if none of the above four
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17 # types is indicated, a new paragraph begins. A line beginning with many
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18 # spaces is interpreted as a continuation (instead of preformatted) after
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19 # a list element. Headings are anchored; paragraphs starting with "Q." are
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20 # emphasized, and those marked with "A." get their first sentence emphasized.
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21 #
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22 # Hyperlinks are created from references to:
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23 # URLs, explicitly marked using <URL:scheme://host...>
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24 # other questions, of the form "question <number>(<period><number>)*"
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25 # sections, of the form "section <number>".
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26
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27 import sys, string, regex, regsub, regex_syntax
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28 regex.set_syntax(regex_syntax.RE_SYNTAX_AWK)
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29
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30 # --------------------------------------------------------- regular expressions
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31 orditemprog = regex.compile(' ?([1-9][0-9]*\.)+ +')
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32 itemprog = regex.compile(' ? ?[-*] +')
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33 headingprog = regex.compile('([1-9][0-9]*\.)+ +')
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34 prefmtprog = regex.compile(' ')
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35 blankprog = regex.compile('^[ \t\r\n]$')
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36 questionprog = regex.compile(' *Q\. +')
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37 answerprog = regex.compile(' *A\. +')
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38 sentprog = regex.compile('(([^.:;?!(]|[.:;?!][^ \t\r\n])+[.:;?!]?)')
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39
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40 mailhdrprog = regex.compile('^(Subject|Newsgroups|Followup-To|From|Reply-To'
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41 '|Approved|Archive-Name|Version|Last-Modified): +', regex.casefold)
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42 urlprog = regex.compile('&lt;URL:([^&]+)&gt;')
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43 addrprog = regex.compile('&lt;([^>@:]+@[^&@:]+)&gt;')
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44 qrefprog = regex.compile('question +([1-9](\.[0-9]+)*)')
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45 srefprog = regex.compile('section +([1-9][0-9]*)')
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46 entityprog = regex.compile('[&<>]')
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47
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48 # ------------------------------------------------------------ global variables
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49 body = []
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50 ollev = ullev = 0
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51 element = content = secnum = version = ''
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52
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53 # ----------------------------------------------------- for making nested lists
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54 def dnol():
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55 global body, ollev
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56 ollev = ollev + 1
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57 if body[-1] == '</li>': del body[-1]
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58 body.append('<ol>')
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59
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60 def upol():
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61 global body, ollev
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62 ollev = ollev - 1
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63 body.append(ollev and '</ol></li>' or '</ol>')
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64
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65 # --------------------------------- output one element and convert its contents
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66 def spew(clearol=0, clearul=0):
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67 global content, body, ollev, ullev
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68
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69 if content:
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70 if entityprog.search(content) > -1:
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71 content = regsub.gsub('&', '&amp;', content)
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72 content = regsub.gsub('<', '&lt;', content)
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73 content = regsub.gsub('>', '&gt;', content)
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74
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75 n = questionprog.match(content)
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76 if n > 0:
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77 content = '<em>' + content[n:] + '</em>'
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78 if ollev: # question reference in index
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79 fragid = regsub.gsub('^ +|\.? +$', '', secnum)
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80 content = '<a href="#%s">%s</a>' % (fragid, content)
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81
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82 if element[0] == 'h': # heading in the main text
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83 fragid = regsub.gsub('^ +|\.? +$', '', secnum)
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84 content = secnum + '<a name="%s">%s</a>' % (fragid, content)
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85
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86 n = answerprog.match(content)
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87 if n > 0: # answer paragraph
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88 content = regsub.sub(sentprog, '<strong>\\1</strong>', content[n:])
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89
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90 body.append('<' + element + '>' + content)
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91 body.append('</' + element + '>')
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92 content = ''
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93
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94 while clearol and ollev: upol()
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95 if clearul and ullev: body.append('</ul>'); ullev = 0
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96
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97 # ---------------------------------------------------------------- main program
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98 faq = len(sys.argv)>1 and sys.argv[1] and open(sys.argv[1]) or sys.stdin
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99 lines = faq.readlines()
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100
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101 for line in lines:
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102 if line[2:9] == '=======': # <hr> will appear *before*
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103 body.append('<hr>') # the underlined heading
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104 continue
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105
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106 n = orditemprog.match(line)
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107 if n > 0: # make ordered list item
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108 spew(0, 'clear ul')
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109 secnum = line[:n]
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110 level = string.count(secnum, '.')
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111 while level > ollev: dnol()
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112 while level < ollev: upol()
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113 element, content = 'li', line[n:]
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114 continue
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115
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116 n = itemprog.match(line)
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117 if n > 0: # make unordered list item
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118 spew('clear ol', 0)
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119 if ullev == 0: body.append('<ul>'); ullev = 1
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120 element, content = 'li', line[n:]
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121 continue
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122
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123 n = headingprog.match(line)
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124 if n > 0: # make heading element
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125 spew('clear ol', 'clear ul')
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126 secnum = line[:n]
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127 sys.stderr.write(line)
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128 element, content = 'h%d' % string.count(secnum, '.'), line[n:]
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129 continue
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130
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131 n = 0
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132 if not secnum: # haven't hit body yet
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133 n = mailhdrprog.match(line)
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134 v = version and -1 or regex.match('Version: ', line)
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135 if v > 0 and not version: version = line[v:]
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136 if n <= 0 and element != 'li': # not pre if after a list item
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137 n = prefmtprog.match(line)
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138 if n > 0: # make preformatted element
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139 if element == 'pre':
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140 content = content + line
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141 else:
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142 spew('clear ol', 'clear ul')
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143 element, content = 'pre', line
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144 continue
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145
4265
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146 if blankprog.match(line) > 0: # force a new element
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147 spew()
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148 element = ''
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149 elif element: # continue current element
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150 content = content + line
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151 else: # no element; make paragraph
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152 spew('clear ol', 'clear ul')
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153 element, content = 'p', line
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154
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155 spew() # output last element
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156
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157 body = string.joinfields(body, '')
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158 body = regsub.gsub(urlprog, '<a href="\\1">\\1</a>', body)
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159 body = regsub.gsub(addrprog, '<a href="mailto:\\1">\\1</a>', body)
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160 body = regsub.gsub(qrefprog, '<a href="#\\1">question \\1</a>', body)
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161 body = regsub.gsub(srefprog, '<a href="#\\1">section \\1</a>', body)
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162
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163 print '<!doctype html public "-//IETF//DTD HTML 2.0//EN"><html>'
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164 print '<head><title>Python Frequently-Asked Questions v' + version
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165 print "</title></head><body>(This file was generated using Ping's"
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166 print '<a href="faq2html.py">faq2html.py</a>.)'
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167 print body + '</body></html>'