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- #!/usr/local/bin/python
-
- # A somewhat-generalized FAQ-to-HTML converter (by Ka-Ping Yee, 10 Sept 96)
-
- # Reads a text file given on standard input or named as first argument, and
- # generates HTML 2.0 on standard output. Recognizes these constructions:
- #
- # HTML element pattern at the beginning of a line
- #
- # section heading (<number><period>)+<space>
- # numbered list element <1-2 spaces>(<number><period>)+<space>
- # unnumbered list element <0-2 spaces><hyphen or asterisk><space>
- # preformatted section <more than two spaces>
- #
- # Heading level is determined by the number of (<number><period>) segments.
- # Blank lines force a separation of elements; if none of the above four
- # types is indicated, a new paragraph begins. A line beginning with many
- # spaces is interpreted as a continuation (instead of preformatted) after
- # a list element. Headings are anchored; paragraphs starting with "Q." are
- # emphasized, and those marked with "A." get their first sentence emphasized.
- #
- # Hyperlinks are created from references to:
- # URLs, explicitly marked using <URL:scheme://host...>
- # other questions, of the form "question <number>(<period><number>)*"
- # sections, of the form "section <number>".
-
- import sys, string, regex, regsub, regex_syntax
- regex.set_syntax(regex_syntax.RE_SYNTAX_AWK)
-
- # --------------------------------------------------------- regular expressions
- orditemprog = regex.compile(' ?([1-9][0-9]*\.)+ +')
- itemprog = regex.compile(' ? ?[-*] +')
- headingprog = regex.compile('([1-9][0-9]*\.)+ +')
- prefmtprog = regex.compile(' ')
- blankprog = regex.compile('^[ \t\r\n]$')
- questionprog = regex.compile(' *Q\. +')
- answerprog = regex.compile(' *A\. +')
- sentprog = regex.compile('(([^.:;?!(]|[.:;?!][^ \t\r\n])+[.:;?!]?)')
-
- mailhdrprog = regex.compile('^(Subject|Newsgroups|Followup-To|From|Reply-To'
- '|Approved|Archive-Name|Version|Last-Modified): +', regex.casefold)
- urlprog = regex.compile('<URL:([^&]+)>')
- addrprog = regex.compile('<([^>@:]+@[^&@:]+)>')
- qrefprog = regex.compile('question +([1-9](\.[0-9]+)*)')
- srefprog = regex.compile('section +([1-9][0-9]*)')
- entityprog = regex.compile('[&<>]')
-
- # ------------------------------------------------------------ global variables
- body = []
- ollev = ullev = 0
- element = content = secnum = version = ''
-
- # ----------------------------------------------------- for making nested lists
- def dnol():
- global body, ollev
- ollev = ollev + 1
- if body[-1] == '</li>': del body[-1]
- body.append('<ol>')
-
- def upol():
- global body, ollev
- ollev = ollev - 1
- body.append(ollev and '</ol></li>' or '</ol>')
-
- # --------------------------------- output one element and convert its contents
- def spew(clearol=0, clearul=0):
- global content, body, ollev, ullev
-
- if content:
- if entityprog.search(content) > -1:
- content = regsub.gsub('&', '&', content)
- content = regsub.gsub('<', '<', content)
- content = regsub.gsub('>', '>', content)
-
- n = questionprog.match(content)
- if n > 0:
- content = '<em>' + content[n:] + '</em>'
- if ollev: # question reference in index
- fragid = regsub.gsub('^ +|\.? +$', '', secnum)
- content = '<a href="#%s">%s</a>' % (fragid, content)
-
- if element[0] == 'h': # heading in the main text
- fragid = regsub.gsub('^ +|\.? +$', '', secnum)
- content = secnum + '<a name="%s">%s</a>' % (fragid, content)
-
- n = answerprog.match(content)
- if n > 0: # answer paragraph
- content = regsub.sub(sentprog, '<strong>\\1</strong>', content[n:])
-
- body.append('<' + element + '>' + content)
- body.append('</' + element + '>')
- content = ''
-
- while clearol and ollev: upol()
- if clearul and ullev: body.append('</ul>'); ullev = 0
-
- # ---------------------------------------------------------------- main program
- faq = len(sys.argv)>1 and sys.argv[1] and open(sys.argv[1]) or sys.stdin
- lines = faq.readlines()
-
- for line in lines:
- if line[2:9] == '=======': # <hr> will appear *before*
- body.append('<hr>') # the underlined heading
- continue
-
- n = orditemprog.match(line)
- if n > 0: # make ordered list item
- spew(0, 'clear ul')
- secnum = line[:n]
- level = string.count(secnum, '.')
- while level > ollev: dnol()
- while level < ollev: upol()
- element, content = 'li', line[n:]
- continue
-
- n = itemprog.match(line)
- if n > 0: # make unordered list item
- spew('clear ol', 0)
- if ullev == 0: body.append('<ul>'); ullev = 1
- element, content = 'li', line[n:]
- continue
-
- n = headingprog.match(line)
- if n > 0: # make heading element
- spew('clear ol', 'clear ul')
- secnum = line[:n]
- sys.stderr.write(line)
- element, content = 'h%d' % string.count(secnum, '.'), line[n:]
- continue
-
- n = 0
- if not secnum: # haven't hit body yet
- n = mailhdrprog.match(line)
- v = version and -1 or regex.match('Version: ', line)
- if v > 0 and not version: version = line[v:]
- if n <= 0 and element != 'li': # not pre if after a list item
- n = prefmtprog.match(line)
- if n > 0: # make preformatted element
- if element == 'pre':
- content = content + line
- else:
- spew('clear ol', 'clear ul')
- element, content = 'pre', line
- continue
-
- if blankprog.match(line) > 0: # force a new element
- spew()
- element = ''
- elif element: # continue current element
- content = content + line
- else: # no element; make paragraph
- spew('clear ol', 'clear ul')
- element, content = 'p', line
-
- spew() # output last element
-
- body = string.joinfields(body, '')
- body = regsub.gsub(urlprog, '<a href="\\1">\\1</a>', body)
- body = regsub.gsub(addrprog, '<a href="mailto:\\1">\\1</a>', body)
- body = regsub.gsub(qrefprog, '<a href="#\\1">question \\1</a>', body)
- body = regsub.gsub(srefprog, '<a href="#\\1">section \\1</a>', body)
-
- print '<!doctype html public "-//IETF//DTD HTML 2.0//EN"><html>'
- print '<head><title>Python Frequently-Asked Questions v' + version
- print "</title></head><body>(This file was generated using Ping's"
- print '<a href="faq2html.py">faq2html.py</a>.)'
- print body + '</body></html>'
-