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# -*- Mode: Python -*-
# vi:si:et:sw=4:sts=4:ts=4
"""
use the output from gst-xmlinspect.py to mangle tmpl/*.sgml and
insert/overwrite Short Description and Long Description
"""
# FIXME: right now it uses pygst and scans on its own;
# we really should use inspect/*.xml instead since the result of
# gst-xmlinspect.py is commited by the docs maintainer, who can be
# expected to have pygst, but this step should be done for every docs build,
# so no pygst allowed
# read in inspect/*.xml
# for every tmpl/element-(name).xml: mangle with details from element
import glob
import re
import sys
import os
class Tmpl:
def __init__(self, filename):
self.filename = filename
self._sectionids = []
self._sections = {}
def read(self):
"""
Read and parse the sections from the given file.
"""
lines = open(self.filename).readlines()
matcher = re.compile("<!-- ##### SECTION (\S+) ##### -->\n")
id = None
for line in lines:
match = matcher.search(line)
if match:
id = match.expand("\\1")
self._sectionids.append(id)
self._sections[id] = []
else:
if not id:
sys.stderr.write(
"WARNING: line before a SECTION header: %s" % line)
else:
self._sections[id].append(line)
def get_section(self, id):
"""
Get the content from the given section.
"""
return self._sections[id]
def set_section(self, id, content):
"""
Replace the given section id with the given content.
"""
self._sections[id] = content
def output(self):
"""
Return the output of the current template in the tmpl/*.sgml format.
"""
lines = []
for id in self._sectionids:
lines.append("<!-- ##### SECTION %s ##### -->\n" % id)
for line in self._sections[id]:
lines.append(line)
return "".join(lines)
def write(self, backup=False):
"""
Write out the template file again, backing up the previous one.
"""
if backup:
target = self.filename + ".mangle.bak"
os.rename(self.filename, target)
handle = open(self.filename, "w")
handle.write(self.output())
handle.close()
from xml.dom.ext.reader import Sax2
from xml.dom.NodeFilter import NodeFilter
def get_elements(file):
elements = {}
handle = open(file)
reader = Sax2.Reader()
doc = reader.fromStream(handle)
handle.close()
walker = doc.createTreeWalker(doc.documentElement,
NodeFilter.SHOW_ELEMENT, None, 0)
while walker.currentNode and walker.currentNode.tagName != 'elements':
walker.nextNode()
# we're at elements now
el = walker.firstChild()
while walker.currentNode:
element = walker.firstChild()
# loop over children of <element>
name = None
description = None
while walker.currentNode:
if walker.currentNode.tagName == 'name':
name = walker.currentNode.firstChild.data.encode('UTF-8')
if walker.currentNode.tagName == 'description':
description = walker.currentNode.firstChild.data.encode('UTF-8')
if not walker.nextSibling(): break
# back up to <element>
walker.parentNode()
elements[name] = {'description': description}
if not walker.nextSibling(): break
return elements
def main():
if not len(sys.argv) == 3:
sys.stderr.write('Please specify the inspect/ dir and the tmpl/ dir')
sys.exit(1)
inspectdir = sys.argv[1]
tmpldir = sys.argv[2]
# parse all .xml files; build map of element name -> short desc
#for file in glob.glob("inspect/plugin-*.xml"):
elements = {}
for file in glob.glob("%s/plugin-*.xml" % inspectdir):
elements.update(get_elements(file))
for file in glob.glob("%s/element-*.sgml" % tmpldir):
base = os.path.basename(file)
element = base[len("element-"):-len(".sgml")]
tmpl = Tmpl(file)
tmpl.read()
if element in elements.keys():
description = elements[element]['description']
tmpl.set_section("Short_Description", "%s\n\n" % description)
# put in an include if not yet there
line = '<include xmlns="http://www.w3.org/2003/XInclude" href="' + \
'element-' + element + '-details.xml" />\n'
section = tmpl.get_section("Long_Description")
if not section[0] == line:
section.insert(0, line)
tmpl.set_section("Long_Description", section)
tmpl.write()
main()
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