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#! /usr/bin/python3
from __future__ import print_function
import sys
import textwrap
import re
import xml.dom.minidom
if len(sys.argv) < 3:
print("Usage: %s help.xml install|live" % sys.argv[0], file=sys.stderr)
sys.exit(1)
if sys.version >= '3':
# Force encoding to UTF-8 even in non-UTF-8 locales.
import io
sys.stdout = io.TextIOWrapper(
sys.stdout.detach(), encoding="UTF-8", line_buffering=True)
else:
# Avoid having to do .encode('UTF-8') everywhere. This is a pain; I wish
# Python supported something like "sys.stdout.encoding = 'UTF-8'".
def fix_stdout():
import codecs
sys.stdout = codecs.EncodedFile(sys.stdout, 'UTF-8')
def null_decode(input, errors='strict'):
return input, len(input)
sys.stdout.decode = null_decode
fix_stdout()
document = xml.dom.minidom.parse(sys.argv[1])
mode = sys.argv[2]
text = ""
paratext = ""
def getText(nodelist):
text = ""
for node in nodelist:
if node.nodeType == node.ELEMENT_NODE:
if node.tagName == "link":
text += "<\x12%s\x13%s\x10>" % (node.getAttribute("linkend"),
getText(node.childNodes))
elif node.tagName == "ulink":
text += "\x11%s\x10" % node.getAttribute("url")
elif node.tagName in ("emphasis", "screen", "literal"):
text += "\x11%s\x10" % getText(node.childNodes)
elif node.tagName == "userinput":
text += "\x11%s\x10" % getText(node.childNodes).rstrip("\x10")
elif node.tagName == "optional":
text += "[%s]" % getText(node.childNodes)
else:
text += getText(node.childNodes)
elif node.nodeType == node.TEXT_NODE:
text += node.data
return re.sub(re.compile(r'^ +| +$', re.MULTILINE), '', text.strip())
def fill(text, width=76, indent=''):
squashed = re.sub(r'\n+', ' ', text)
wrapper = textwrap.TextWrapper(width=width, initial_indent=indent,
subsequent_indent=indent)
# Eww - but textwrap doesn't provide any other way to turn off
# hyphenation ... This may break in a future version of Python.
wrapper.wordsep_re = re.compile(r'(\s+)')
return wrapper.fill(squashed)
def stripLinks(text):
return re.sub(r'\x12.+?\x13(.+?)\x10', r'\1', text)
def handleReference(reference):
for refentry in reference.getElementsByTagName("refentry"):
handleRefEntry(refentry)
sys.stdout.write("\0\n")
def handleRefEntry(refentry):
global text
sys.stdout.write("\x04")
handleRefNameDiv(refentry.getElementsByTagName("refnamediv")[0])
handleRefSection(refentry.getElementsByTagName("refsection")[0])
sys.stdout.write(text.rstrip('\n'))
text = ''
def handleRefNameDiv(refnamediv):
global text
refdescriptor = refnamediv.getElementsByTagName("refdescriptor")[0]
keycap = refdescriptor.getElementsByTagName("keycap")[0]
linkname = getText(keycap.childNodes)
refname = refnamediv.getElementsByTagName("refname")[0]
title = getText(refname.childNodes)
text += "\x12%s\x14%s\x10" % (linkname, title)
def handleRefSection(refsection):
for node in refsection.childNodes:
if node.nodeType == node.ELEMENT_NODE:
if node.tagName == "title":
handleRefSectionTitle(node)
elif node.tagName == "segmentedlist":
handleSegmentedList(node)
elif node.tagName == "variablelist":
handleVariableList(node)
elif node.tagName == "informalexample":
handleInformalExample(node)
elif node.tagName == "para":
handlePara(node)
else:
handleRefSection(node)
def handleRefSectionTitle(title):
global text
if len(title.childNodes) > 0:
text += "\x11%s\x10" % getText(title.childNodes)
text += "\n\n"
def handleSegmentedList(segmentedlist):
global text
segmentedlistclass = segmentedlist.getAttribute("class")
if segmentedlistclass == "helpindex":
keywidth = 7
elif segmentedlistclass == "bootparams-hardware":
keywidth = 39
elif segmentedlistclass == "bootparams-disk":
keywidth = 29
else: # segmentedlistclass == "bootparams-installer"
keywidth = 40
handleSegmentedListTitle(segmentedlist.getElementsByTagName("title")[0])
handleSegTitles(segmentedlist.getElementsByTagName("segtitle"), keywidth)
handleSegListItems(segmentedlist.getElementsByTagName("seglistitem"),
keywidth)
text += "\n"
def handleSegmentedListTitle(title):
global text
if len(title.childNodes) > 0:
text += "\x11%s\x10" % getText(title.childNodes)
text += "\n\n"
def handleSegTitles(segtitles, keywidth):
global text
if len(segtitles) >= 2:
text += "\x11%-*s%s\x10" % (keywidth, getText(segtitles[0].childNodes),
getText(segtitles[1].childNodes))
text += "\n\n"
def handleSegListItems(seglistitems, keywidth):
global text
for seglistitem in seglistitems:
segs = seglistitem.getElementsByTagName("seg")
key = fill(getText(segs[0].childNodes))
plainkey = stripLinks(key.split("\n")[-1])
topic = getText(segs[1].childNodes)
if len(plainkey) > keywidth - 1:
text += "%s\n%s%s" % (key, " " * keywidth, topic)
else:
text += "%s%s%s" % (key, " " * (keywidth - len(plainkey)), topic)
text += "\n"
def handleVariableList(variablelist):
global text
for varlistentry in variablelist.getElementsByTagName("varlistentry"):
handleVarListEntry(varlistentry)
text += "\n"
def handleVarListEntry(varlistentry):
global text
terms = varlistentry.getElementsByTagName("term")
text += ", ".join(map(
lambda term: "\x11%s\x10" % getText(term.childNodes), terms))
text += "\n"
listitem = varlistentry.getElementsByTagName("listitem")[0]
text += fill(getText(listitem.childNodes), 76, ' ')
text += "\n"
def handleInformalExample(informalexample):
global text
for screen in informalexample.getElementsByTagName("screen"):
text += " " + getText(screen.childNodes)
text += "\n\n"
# This whole nobreak business sucks. It's there because
# Locale::Po4a::Docbook doesn't want to translate <phrase> elements within
# <para>s separately, but instead globs them together into one big msgid.
# To work around this, we do <para class="nobreak"> <para class="nobreak">
# ... <para>, but of course then we have to make sure to collect all the
# text up to the break and make sure to fill it together.
def handlePara(para):
global text, paratext
if paratext != "":
lastchar = ord(paratext[-1])
if lastchar >= 32 and lastchar <= 127 and not paratext[-1].isspace():
paratext += " "
paratext += getText(para.childNodes)
if (not para.hasAttribute("class") or
para.getAttribute("class") != "nobreak"):
text += fill(paratext)
text += "\n\n"
paratext = ""
def preprocess(parent):
global mode
nodelist = parent.childNodes
for node in nodelist:
if node.nodeType == node.ELEMENT_NODE:
if node.hasAttribute("condition"):
match = True
for condition in node.getAttribute("condition").split(';'):
if condition != "gfxboot" and condition != mode:
match = False
break
if not match:
parent.removeChild(node).unlink()
continue
preprocess(node)
preprocess(document)
reference = document.getElementsByTagName("reference")[0]
handleReference(reference)
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