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von raredesign | Dez 3, 2019 | Allgemein | 0 Kommentare
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| Current Path : /usr/share/doc/python-debian/examples/deb822/ |
| Current File : //usr/share/doc/python-debian/examples/deb822/render-dctrl |
#!/usr/bin/python
# render-dctrl
# Copyright (C) 2009 Stefano Zacchiroli <zack@debian.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# Requirements (Debian packages): python-debian python-markdown
usage = """Usage: render-dctrl [OPTION ...] [FILE ...]
Render a 822-like listing of Debian packages (AKA "Packages" file) to
XHTML, rendering (long) descriptions as Markdown text. Render text
coming from FILEs, if given, or from standard input otherwise. Typical
usage is within a dctrl-tools pipeline, example:
grep-available -s Package,Depends,Description ocaml | render-dctrl > foo.html
Warning: beware of #525525 and thus avoid using "-s Description" alone."""
import re
import string
import sys
from debian import deb822
from markdown import markdown
from optparse import OptionParser
options = None # global, for cmdline options
css = """
body { font-family: sans-serif; }
dt {
font-weight: bold;
}
dd {
margin-bottom: 5pt;
}
div.package {
border: solid 1pt;
margin-top: 10pt;
padding-left: 2pt;
padding-right: 2pt;
}
.raw {
font-family: monospace;
background: #ddd;
padding-left: 2pt;
padding-right: 2pt;
}
.shortdesc {
text-decoration: underline;
margin-bottom: 5pt;
display: block;
}
.longdesc {
background: #eee;
}
span.package {
font-family: monospace;
font-size: 110%;
}
.uid {
float: right;
font-size: x-small;
padding-right: 10pt;
}
"""
html_header = """<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<style type="text/css">%s</style>
</head>
<body>
""" % css
html_trailer = """ </body>
</html>
"""
mdwn_list_line = re.compile(r'^(\s*)[\*\+\-]') # Markdown list item line
# mdwn_head_line = re.compile(r'^(\s*)#') # Markdown header
padding = re.compile(r'^(\s*)')
def get_indent(s):
m = padding.match(s)
if m:
return len(m.group(1))
else:
return 0
def render_longdesc(lines):
print '<div class="longdesc">'
lines = map(lambda s: s[1:], lines) # strip 822 heading space
curpara, paragraphs = [], []
inlist, listindent = False, 0
store_para = lambda: paragraphs.append(string.join(curpara, '\n') + '\n')
add_indent = lambda n, s: string.expandtabs('\t', n) + s
for l in lines: # recognize Markdown paragraphs
if l.rstrip() == '.': # RULE 1: split paragraphs at Debian's "."
store_para()
curpara, inlist, listindent = [], False, 0
else:
if inlist: # currently in a list
if get_indent(l) <= listindent: # RULE 3: leave list on underflow
store_para()
curpara, inlinst, linstindent = [l], False, 0
else: # the list goes on ...
curpara.append(l)
else: # currently not in a list
if mdwn_list_line.match(l): # new list start
if curpara: # RULE 2: handle list item *not* at para start
store_para()
curpara, inlist, listindent = [l], True, get_indent(l)
elif get_indent(l) >= 1: # RULE 4: hande non-list verbatim
if curpara and get_indent(curpara[-1]) < 4:
store_para()
curpara = []
curpara.append(add_indent(3, l))
else:
curpara.append(l)
if curpara:
store_para()
for p in paragraphs: # render paragraphs
print markdown(p)
print '</div>'
def render_field(field, val):
field = field.lower()
print '<dt>%s</dt>' % field
print '<dd class="%s">' % field
if field == 'description':
lines = val.split('\n')
print '<span class="shortdesc">%s</span>' % lines[0]
render_longdesc(lines[1:])
elif field == 'package':
print '<a href="#%s" class="uid">id</a>' % val
print '<span id="%s" class="package">%s</span>' % (val, val)
elif field in []: # fields not to be typeset as "raw"
print '<span class="%s">%s</span>' % (field, val)
else:
print '<span class="raw">%s</span>' % val
print '</dd>'
def render_file(f):
global options, html_header, html_trailer
if options.print_header:
print html_header
for pkg in deb822.Packages.iter_paragraphs(f):
print '<div class="package">'
print '<dl class="fields">'
for (field, val) in pkg.iteritems():
render_field(field, val)
print '</dl>'
print '</div>\n'
if options.print_header:
print html_trailer
def main():
global options, usage
parser = OptionParser(usage=usage)
parser.add_option("-n", "--no-headers",
action="store_false", dest="print_header", default=True,
help="suppress printing of HTML header/trailer")
(options, args) = parser.parse_args()
if len(args):
for fname in args:
render_file(open(fname))
else:
render_file(sys.stdin)
if __name__ == '__main__':
main()
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