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"""SCons.Tool.tex
Tool-specific initialization for TeX.
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__
#
# 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.
#
__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
import os.path
import re
import string
import SCons.Action
import SCons.Defaults
import SCons.Node
import SCons.Node.FS
import SCons.Util
# Define an action to build a generic tex file. This is sufficient for all
# tex files.
TeXAction = SCons.Action.Action("$TEXCOM", "$TEXCOMSTR")
# Define an action to build a latex file. This action might be needed more
# than once if we are dealing with labels and bibtex
LaTeXAction = SCons.Action.Action("$LATEXCOM", "$LATEXCOMSTR")
# Define an action to run BibTeX on a file.
BibTeXAction = SCons.Action.Action("$BIBTEXCOM", "$BIBTEXCOMSTR")
def LaTeXAuxAction(target = None, source= None, env=None):
"""A builder for LaTeX files that checks the output in the aux file
and decides how many times to use LaTeXAction, and BibTeXAction."""
# Get the base name of the target
basename, ext = os.path.splitext(str(target[0]))
# Run LaTeX once to generate a new aux file.
LaTeXAction(target,source,env)
# Now if bibtex will need to be run.
content = open(basename + ".aux","rb").read()
if string.find(content, "bibdata") != -1:
bibfile = env.fs.File(basename)
BibTeXAction(None,bibfile,env)
# Now check if latex needs to be run yet again.
for trial in range(3):
content = open(basename + ".log","rb").read()
if not re.search("^LaTeX Warning:.*Rerun",content,re.MULTILINE):
break
LaTeXAction(target,source,env)
return 0
LaTeX_re = re.compile("\\\\document(style|class)")
def is_LaTeX(flist):
# Scan a file list to decide if it's TeX- or LaTeX-flavored.
for f in flist:
content = f.get_contents()
if LaTeX_re.search(content):
return 1
return 0
def TeXLaTeXFunction(target = None, source= None, env=None):
"""A builder for TeX and LaTeX that scans the source file to
decide the "flavor" of the source and then executes the appropriate
program."""
if is_LaTeX(source):
LaTeXAuxAction(target,source,env)
else:
TeXAction(target,source,env)
return 0
TeXLaTeXAction = SCons.Action.Action(TeXLaTeXFunction,
strfunction=None)
def generate(env):
"""Add Builders and construction variables for TeX to an Environment."""
try:
bld = env['BUILDERS']['DVI']
except KeyError:
bld = SCons.Defaults.DVI()
env['BUILDERS']['DVI'] = bld
bld.add_action('.tex', TeXLaTeXAction)
env['TEX'] = 'tex'
env['TEXFLAGS'] = SCons.Util.CLVar('')
env['TEXCOM'] = '$TEX $TEXFLAGS $SOURCES'
# Duplicate from latex.py. If latex.py goes away, then this is still OK.
env['LATEX'] = 'latex'
env['LATEXFLAGS'] = SCons.Util.CLVar('')
env['LATEXCOM'] = '$LATEX $LATEXFLAGS $SOURCES'
env['BIBTEX'] = 'bibtex'
env['BIBTEXFLAGS'] = SCons.Util.CLVar('')
env['BIBTEXCOM'] = '$BIBTEX $BIBTEXFLAGS $SOURCES'
def exists(env):
return env.Detect('tex')
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