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|
"""SCons.Tool.docbook
Tool-specific initialization for Docbook.
There normally shouldn't be any need to import this module directly.
It will usually be imported through the generic SCons.Tool.Tool()
selection method.
"""
#
# Copyright (c) 2001-7,2010 The SCons Foundation
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
import os
import glob
import re
import SCons.Action
import SCons.Builder
import SCons.Defaults
import SCons.Script
import SCons.Tool
import SCons.Util
# Get full path to this script
scriptpath = os.path.dirname(os.path.realpath(__file__))
# Local folder for the collection of DocBook XSLs
db_xsl_folder = 'docbook-xsl-1.76.1'
# Do we have libxml2/libxslt/lxml?
has_libxml2 = True
has_lxml = True
try:
import libxml2
import libxslt
except:
has_libxml2 = False
try:
import lxml
except:
has_lxml = False
# Set this to True, to prefer xsltproc over libxml2 and lxml
prefer_xsltproc = False
# Regexs for parsing Docbook XML sources of MAN pages
re_manvolnum = re.compile("<manvolnum>([^<]*)</manvolnum>")
re_refname = re.compile("<refname>([^<]*)</refname>")
#
# Helper functions
#
def __extend_targets_sources(target, source):
""" Prepare the lists of target and source files. """
if not SCons.Util.is_List(target):
target = [target]
if not source:
source = target[:]
elif not SCons.Util.is_List(source):
source = [source]
if len(target) < len(source):
target.extend(source[len(target):])
return target, source
def __init_xsl_stylesheet(kw, env, user_xsl_var, default_path):
if kw.get('DOCBOOK_XSL','') == '':
xsl_style = kw.get('xsl', env.subst(user_xsl_var))
if xsl_style == '':
path_args = [scriptpath, db_xsl_folder] + default_path
xsl_style = os.path.join(*path_args)
kw['DOCBOOK_XSL'] = xsl_style
def __select_builder(lxml_builder, libxml2_builder, cmdline_builder):
""" Selects a builder, based on which Python modules are present. """
if prefer_xsltproc:
return cmdline_builder
if not has_libxml2:
# At the moment we prefer libxml2 over lxml, the latter can lead
# to conflicts when installed together with libxml2.
if has_lxml:
return lxml_builder
else:
return cmdline_builder
return libxml2_builder
def __ensure_suffix(t, suffix):
""" Ensure that the target t has the given suffix. """
tpath = str(t)
if not tpath.endswith(suffix):
return tpath+suffix
return t
def __ensure_suffix_stem(t, suffix):
""" Ensure that the target t has the given suffix, and return the file's stem. """
tpath = str(t)
if not tpath.endswith(suffix):
stem = tpath
tpath += suffix
return tpath, stem
else:
stem, ext = os.path.splitext(tpath)
return t, stem
def __get_xml_text(root):
""" Return the text for the given root node (xml.dom.minidom). """
txt = ""
for e in root.childNodes:
if (e.nodeType == e.TEXT_NODE):
txt += e.data
return txt
def __create_output_dir(base_dir):
""" Ensure that the output directory base_dir exists. """
root, tail = os.path.split(base_dir)
dir = None
if tail:
if base_dir.endswith('/'):
dir = base_dir
else:
dir = root
else:
if base_dir.endswith('/'):
dir = base_dir
if dir and not os.path.isdir(dir):
os.makedirs(dir)
#
# Supported command line tools and their call "signature"
#
xsltproc_com = {'xsltproc' : '$DOCBOOK_XSLTPROC $DOCBOOK_XSLTPROCFLAGS -o $TARGET $DOCBOOK_XSL $SOURCE',
'saxon' : '$DOCBOOK_XSLTPROC $DOCBOOK_XSLTPROCFLAGS -o $TARGET $DOCBOOK_XSL $SOURCE $DOCBOOK_XSLTPROCPARAMS',
'saxon-xslt' : '$DOCBOOK_XSLTPROC $DOCBOOK_XSLTPROCFLAGS -o $TARGET $DOCBOOK_XSL $SOURCE $DOCBOOK_XSLTPROCPARAMS',
'xalan' : '$DOCBOOK_XSLTPROC $DOCBOOK_XSLTPROCFLAGS -q -out $TARGET -xsl $DOCBOOK_XSL -in $SOURCE'}
xmllint_com = {'xmllint' : '$DOCBOOK_XMLLINT $DOCBOOK_XMLLINTFLAGS --xinclude $SOURCE > $TARGET'}
fop_com = {'fop' : '$DOCBOOK_FOP $DOCBOOK_FOPFLAGS -fo $SOURCE -pdf $TARGET',
'xep' : '$DOCBOOK_FOP $DOCBOOK_FOPFLAGS -valid -fo $SOURCE -pdf $TARGET',
'jw' : '$DOCBOOK_FOP $DOCBOOK_FOPFLAGS -f docbook -b pdf $SOURCE -o $TARGET'}
def __detect_cl_tool(env, chainkey, cdict):
"""
Helper function, picks a command line tool from the list
and initializes its environment variables.
"""
if env.get(chainkey,'') == '':
clpath = ''
for cltool in cdict:
clpath = env.WhereIs(cltool)
if clpath:
env[chainkey] = clpath
if not env[chainkey + 'COM']:
env[chainkey + 'COM'] = cdict[cltool]
def _detect(env):
"""
Detect all the command line tools that we might need for creating
the requested output formats.
"""
global prefer_xsltproc
if env.get('DOCBOOK_PREFER_XSLTPROC',''):
prefer_xsltproc = True
if ((not has_libxml2 and not has_lxml) or (prefer_xsltproc)):
# Try to find the XSLT processors
__detect_cl_tool(env, 'DOCBOOK_XSLTPROC', xsltproc_com)
__detect_cl_tool(env, 'DOCBOOK_XMLLINT', xmllint_com)
__detect_cl_tool(env, 'DOCBOOK_FOP', fop_com)
#
# Scanners
#
include_re = re.compile('fileref\\s*=\\s*["|\']([^\\n]*)["|\']')
sentity_re = re.compile('<!ENTITY\\s+%*\\s*[^\\s]+\\s+SYSTEM\\s+["|\']([^\\n]*)["|\']>')
def __xml_scan(node, env, path, arg):
""" Simple XML file scanner, detecting local images and XIncludes as implicit dependencies. """
# Does the node exist yet?
if not os.path.isfile(str(node)):
return []
if env.get('DOCBOOK_SCANENT',''):
# Use simple pattern matching for system entities..., no support
# for recursion yet.
contents = node.get_text_contents()
return sentity_re.findall(contents)
xsl_file = os.path.join(scriptpath,'utils','xmldepend.xsl')
if not has_libxml2 or prefer_xsltproc:
if has_lxml and not prefer_xsltproc:
from lxml import etree
xsl_tree = etree.parse(xsl_file)
doc = etree.parse(str(node))
result = doc.xslt(xsl_tree)
depfiles = [x.strip() for x in str(result).splitlines() if x.strip() != "" and not x.startswith("<?xml ")]
return depfiles
else:
# Try to call xsltproc
xsltproc = env.subst("$DOCBOOK_XSLTPROC")
if xsltproc and xsltproc.endswith('xsltproc'):
result = env.backtick(' '.join([xsltproc, xsl_file, str(node)]))
depfiles = [x.strip() for x in str(result).splitlines() if x.strip() != "" and not x.startswith("<?xml ")]
return depfiles
else:
# Use simple pattern matching, there is currently no support
# for xi:includes...
contents = node.get_text_contents()
return include_re.findall(contents)
styledoc = libxml2.parseFile(xsl_file)
style = libxslt.parseStylesheetDoc(styledoc)
doc = libxml2.parseFile(str(node))
result = style.applyStylesheet(doc, None)
depfiles = []
for x in str(result).splitlines():
if x.strip() != "" and not x.startswith("<?xml "):
depfiles.extend(x.strip().split())
style.freeStylesheet()
doc.freeDoc()
result.freeDoc()
return depfiles
# Creating the instance of our XML dependency scanner
docbook_xml_scanner = SCons.Script.Scanner(function = __xml_scan,
argument = None)
#
# Builders
#
def __build_libxml2(target, source, env):
"""
General XSLT builder (HTML/FO), using the libxml2 module.
"""
xsl_style = env.subst('$DOCBOOK_XSL')
styledoc = libxml2.parseFile(xsl_style)
style = libxslt.parseStylesheetDoc(styledoc)
doc = libxml2.readFile(str(source[0]),None,libxml2.XML_PARSE_NOENT)
# Support for additional parameters
parampass = {}
if parampass:
result = style.applyStylesheet(doc, parampass)
else:
result = style.applyStylesheet(doc, None)
style.saveResultToFilename(str(target[0]), result, 0)
style.freeStylesheet()
doc.freeDoc()
result.freeDoc()
return None
def __build_lxml(target, source, env):
"""
General XSLT builder (HTML/FO), using the lxml module.
"""
from lxml import etree
xsl_style = env.subst('$DOCBOOK_XSL')
xsl_tree = etree.parse(xsl_style)
transform = etree.XSLT(xsl_tree)
doc = etree.parse(str(source[0]))
# Support for additional parameters
parampass = {}
if parampass:
result = transform(doc, **parampass)
else:
result = transform(doc)
try:
of = open(str(target[0]), "w")
of.write(of.write(etree.tostring(result, pretty_print=True)))
of.close()
except:
pass
return None
def __xinclude_libxml2(target, source, env):
"""
Resolving XIncludes, using the libxml2 module.
"""
doc = libxml2.readFile(str(source[0]), None, libxml2.XML_PARSE_NOENT)
doc.xincludeProcess()
doc.saveFile(str(target[0]))
doc.freeDoc()
return None
def __xinclude_lxml(target, source, env):
"""
Resolving XIncludes, using the lxml module.
"""
from lxml import etree
doc = etree.parse(str(source[0]))
doc.xinclude()
try:
doc.write(str(target[0]), xml_declaration=True,
encoding="UTF-8", pretty_print=True)
except:
pass
return None
__libxml2_builder = SCons.Builder.Builder(
action = __build_libxml2,
src_suffix = '.xml',
source_scanner = docbook_xml_scanner)
__lxml_builder = SCons.Builder.Builder(
action = __build_lxml,
src_suffix = '.xml',
source_scanner = docbook_xml_scanner)
__xinclude_libxml2_builder = SCons.Builder.Builder(
action = __xinclude_libxml2,
suffix = '.xml',
src_suffix = '.xml',
source_scanner = docbook_xml_scanner)
__xinclude_lxml_builder = SCons.Builder.Builder(
action = __xinclude_lxml,
suffix = '.xml',
src_suffix = '.xml',
source_scanner = docbook_xml_scanner)
__xsltproc_builder = SCons.Builder.Builder(
action = SCons.Action.Action('$DOCBOOK_XSLTPROCCOM','$DOCBOOK_XSLTPROCCOMSTR'),
src_suffix = '.xml',
source_scanner = docbook_xml_scanner)
__xmllint_builder = SCons.Builder.Builder(
action = SCons.Action.Action('$DOCBOOK_XMLLINTCOM','$DOCBOOK_XMLLINTCOMSTR'),
suffix = '.xml',
src_suffix = '.xml',
source_scanner = docbook_xml_scanner)
__fop_builder = SCons.Builder.Builder(
action = SCons.Action.Action('$DOCBOOK_FOPCOM','$DOCBOOK_FOPCOMSTR'),
suffix = '.pdf',
src_suffix = '.fo',
ensure_suffix=1)
def DocbookHtml(env, target, source=None, *args, **kw):
"""
A pseudo-Builder, providing a Docbook toolchain for HTML output.
"""
# Init list of targets/sources
target, source = __extend_targets_sources(target, source)
# Init XSL stylesheet
__init_xsl_stylesheet(kw, env, '$DOCBOOK_DEFAULT_XSL_HTML', ['html','docbook.xsl'])
# Setup builder
__builder = __select_builder(__lxml_builder, __libxml2_builder, __xsltproc_builder)
# Create targets
result = []
for t,s in zip(target,source):
r = __builder.__call__(env, __ensure_suffix(t,'.html'), s, **kw)
env.Depends(r, kw['DOCBOOK_XSL'])
result.extend(r)
return result
def DocbookHtmlChunked(env, target, source=None, *args, **kw):
"""
A pseudo-Builder, providing a Docbook toolchain for chunked HTML output.
"""
# Init target/source
if not SCons.Util.is_List(target):
target = [target]
if not source:
source = target
target = ['index.html']
elif not SCons.Util.is_List(source):
source = [source]
# Init XSL stylesheet
__init_xsl_stylesheet(kw, env, '$DOCBOOK_DEFAULT_XSL_HTMLCHUNKED', ['html','chunkfast.xsl'])
# Setup builder
__builder = __select_builder(__lxml_builder, __libxml2_builder, __xsltproc_builder)
# Detect base dir
base_dir = kw.get('base_dir', '')
if base_dir:
__create_output_dir(base_dir)
# Create targets
result = []
r = __builder.__call__(env, base_dir+__ensure_suffix(str(target[0]), '.html'), source[0], **kw)
env.Depends(r, kw['DOCBOOK_XSL'])
result.extend(r)
# Add supporting files for cleanup
env.Clean(r, glob.glob(base_dir+'*.html'))
return result
def DocbookHtmlhelp(env, target, source=None, *args, **kw):
"""
A pseudo-Builder, providing a Docbook toolchain for HTMLHELP output.
"""
# Init target/source
if not SCons.Util.is_List(target):
target = [target]
if not source:
source = target
target = ['index.html']
elif not SCons.Util.is_List(source):
source = [source]
# Init XSL stylesheet
__init_xsl_stylesheet(kw, env, '$DOCBOOK_DEFAULT_XSL_HTMLHELP', ['htmlhelp','htmlhelp.xsl'])
# Setup builder
__builder = __select_builder(__lxml_builder, __libxml2_builder, __xsltproc_builder)
# Detect base dir
base_dir = kw.get('base_dir', '')
if base_dir:
__create_output_dir(base_dir)
# Create targets
result = []
r = __builder.__call__(env, base_dir+__ensure_suffix(str(target[0]), '.html'), source[0], **kw)
env.Depends(r, kw['DOCBOOK_XSL'])
result.extend(r)
# Add supporting files for cleanup
env.Clean(r, ['toc.hhc', 'htmlhelp.hhp', 'index.hhk'] +
glob.glob(base_dir+'[ar|bk|ch]*.html'))
return result
def DocbookPdf(env, target, source=None, *args, **kw):
"""
A pseudo-Builder, providing a Docbook toolchain for PDF output.
"""
# Init list of targets/sources
target, source = __extend_targets_sources(target, source)
# Init XSL stylesheet
__init_xsl_stylesheet(kw, env, '$DOCBOOK_DEFAULT_XSL_PDF', ['fo','docbook.xsl'])
# Setup builder
__builder = __select_builder(__lxml_builder, __libxml2_builder, __xsltproc_builder)
# Create targets
result = []
for t,s in zip(target,source):
t, stem = __ensure_suffix_stem(t, '.pdf')
xsl = __builder.__call__(env, stem+'.fo', s, **kw)
result.extend(xsl)
env.Depends(xsl, kw['DOCBOOK_XSL'])
result.extend(__fop_builder.__call__(env, t, xsl, **kw))
return result
def DocbookMan(env, target, source=None, *args, **kw):
"""
A pseudo-Builder, providing a Docbook toolchain for Man page output.
"""
# Init list of targets/sources
target, source = __extend_targets_sources(target, source)
# Init XSL stylesheet
__init_xsl_stylesheet(kw, env, '$DOCBOOK_DEFAULT_XSL_MAN', ['manpages','docbook.xsl'])
# Setup builder
__builder = __select_builder(__lxml_builder, __libxml2_builder, __xsltproc_builder)
# Create targets
result = []
for t,s in zip(target,source):
volnum = "1"
outfiles = []
srcfile = __ensure_suffix(str(s),'.xml')
if os.path.isfile(srcfile):
try:
import xml.dom.minidom
dom = xml.dom.minidom.parse(__ensure_suffix(str(s),'.xml'))
# Extract volume number, default is 1
for node in dom.getElementsByTagName('refmeta'):
for vol in node.getElementsByTagName('manvolnum'):
volnum = __get_xml_text(vol)
# Extract output filenames
for node in dom.getElementsByTagName('refnamediv'):
for ref in node.getElementsByTagName('refname'):
outfiles.append(__get_xml_text(ref)+'.'+volnum)
except:
# Use simple regex parsing
f = open(__ensure_suffix(str(s),'.xml'), 'r')
content = f.read()
f.close()
for m in re_manvolnum.finditer(content):
volnum = m.group(1)
for m in re_refname.finditer(content):
outfiles.append(m.group(1)+'.'+volnum)
if not outfiles:
# Use stem of the source file
spath = str(s)
if not spath.endswith('.xml'):
outfiles.append(spath+'.'+volnum)
else:
stem, ext = os.path.splitext(spath)
outfiles.append(stem+'.'+volnum)
else:
# We have to completely rely on the given target name
outfiles.append(t)
__builder.__call__(env, outfiles[0], s, **kw)
env.Depends(outfiles[0], kw['DOCBOOK_XSL'])
result.append(outfiles[0])
if len(outfiles) > 1:
env.Clean(outfiles[0], outfiles[1:])
return result
def DocbookSlidesPdf(env, target, source=None, *args, **kw):
"""
A pseudo-Builder, providing a Docbook toolchain for PDF slides output.
"""
# Init list of targets/sources
target, source = __extend_targets_sources(target, source)
# Init XSL stylesheet
__init_xsl_stylesheet(kw, env, '$DOCBOOK_DEFAULT_XSL_SLIDESPDF', ['slides','fo','plain.xsl'])
# Setup builder
__builder = __select_builder(__lxml_builder, __libxml2_builder, __xsltproc_builder)
# Create targets
result = []
for t,s in zip(target,source):
t, stem = __ensure_suffix_stem(t, '.pdf')
xsl = __builder.__call__(env, stem+'.fo', s, **kw)
env.Depends(xsl, kw['DOCBOOK_XSL'])
result.extend(xsl)
result.extend(__fop_builder.__call__(env, t, xsl, **kw))
return result
def DocbookSlidesHtml(env, target, source=None, *args, **kw):
"""
A pseudo-Builder, providing a Docbook toolchain for HTML slides output.
"""
# Init list of targets/sources
if not SCons.Util.is_List(target):
target = [target]
if not source:
source = target
target = ['index.html']
elif not SCons.Util.is_List(source):
source = [source]
# Init XSL stylesheet
__init_xsl_stylesheet(kw, env, '$DOCBOOK_DEFAULT_XSL_SLIDESHTML', ['slides','html','plain.xsl'])
# Setup builder
__builder = __select_builder(__lxml_builder, __libxml2_builder, __xsltproc_builder)
# Detect base dir
base_dir = kw.get('base_dir', '')
if base_dir:
__create_output_dir(base_dir)
# Create targets
result = []
r = __builder.__call__(env, base_dir+__ensure_suffix(str(target[0]), '.html'), source[0], **kw)
env.Depends(r, kw['DOCBOOK_XSL'])
result.extend(r)
# Add supporting files for cleanup
env.Clean(r, [base_dir+'toc.html'] +
glob.glob(base_dir+'foil*.html'))
return result
def DocbookXInclude(env, target, source, *args, **kw):
"""
A pseudo-Builder, for resolving XIncludes in a separate processing step.
"""
# Init list of targets/sources
target, source = __extend_targets_sources(target, source)
# Setup builder
__builder = __select_builder(__xinclude_lxml_builder,__xinclude_libxml2_builder,__xmllint_builder)
# Create targets
result = []
for t,s in zip(target,source):
result.extend(__builder.__call__(env, t, s, **kw))
return result
def DocbookXslt(env, target, source=None, *args, **kw):
"""
A pseudo-Builder, applying a simple XSL transformation to the input file.
"""
# Init list of targets/sources
target, source = __extend_targets_sources(target, source)
# Init XSL stylesheet
kw['DOCBOOK_XSL'] = kw.get('xsl', 'transform.xsl')
# Setup builder
__builder = __select_builder(__lxml_builder, __libxml2_builder, __xsltproc_builder)
# Create targets
result = []
for t,s in zip(target,source):
r = __builder.__call__(env, t, s, **kw)
env.Depends(r, kw['DOCBOOK_XSL'])
result.extend(r)
return result
def generate(env):
"""Add Builders and construction variables for docbook to an Environment."""
env.SetDefault(
# Default names for customized XSL stylesheets
DOCBOOK_DEFAULT_XSL_HTML = '',
DOCBOOK_DEFAULT_XSL_HTMLCHUNKED = '',
DOCBOOK_DEFAULT_XSL_HTMLHELP = '',
DOCBOOK_DEFAULT_XSL_PDF = '',
DOCBOOK_DEFAULT_XSL_MAN = '',
DOCBOOK_DEFAULT_XSL_SLIDESPDF = '',
DOCBOOK_DEFAULT_XSL_SLIDESHTML = '',
# Paths to the detected executables
DOCBOOK_XSLTPROC = '',
DOCBOOK_XMLLINT = '',
DOCBOOK_FOP = '',
# Additional flags for the text processors
DOCBOOK_XSLTPROCFLAGS = SCons.Util.CLVar(''),
DOCBOOK_XMLLINTFLAGS = SCons.Util.CLVar(''),
DOCBOOK_FOPFLAGS = SCons.Util.CLVar(''),
DOCBOOK_XSLTPROCPARAMS = SCons.Util.CLVar(''),
# Default command lines for the detected executables
DOCBOOK_XSLTPROCCOM = xsltproc_com['xsltproc'],
DOCBOOK_XMLLINTCOM = xmllint_com['xmllint'],
DOCBOOK_FOPCOM = fop_com['fop'],
# Screen output for the text processors
DOCBOOK_XSLTPROCCOMSTR = None,
DOCBOOK_XMLLINTCOMSTR = None,
DOCBOOK_FOPCOMSTR = None,
)
_detect(env)
try:
env.AddMethod(DocbookHtml, "DocbookHtml")
env.AddMethod(DocbookHtmlChunked, "DocbookHtmlChunked")
env.AddMethod(DocbookHtmlhelp, "DocbookHtmlhelp")
env.AddMethod(DocbookPdf, "DocbookPdf")
env.AddMethod(DocbookMan, "DocbookMan")
env.AddMethod(DocbookSlidesPdf, "DocbookSlidesPdf")
env.AddMethod(DocbookSlidesHtml, "DocbookSlidesHtml")
env.AddMethod(DocbookXInclude, "DocbookXInclude")
env.AddMethod(DocbookXslt, "DocbookXslt")
except AttributeError:
# Looks like we use a pre-0.98 version of SCons...
from SCons.Script.SConscript import SConsEnvironment
SConsEnvironment.DocbookHtml = DocbookHtml
SConsEnvironment.DocbookHtmlChunked = DocbookHtmlChunked
SConsEnvironment.DocbookHtmlhelp = DocbookHtmlhelp
SConsEnvironment.DocbookPdf = DocbookPdf
SConsEnvironment.DocbookMan = DocbookMan
SConsEnvironment.DocbookSlidesPdf = DocbookSlidesPdf
SConsEnvironment.DocbookSlidesHtml = DocbookSlidesHtml
SConsEnvironment.DocbookXInclude = DocbookXInclude
SConsEnvironment.DocbookXslt = DocbookXslt
def exists(env):
return 1
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