text: """SCons.Tool.pdftex
  
  Tool-specific initialization for pdftex.
  Generates .pdf files from .tex files
  
  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 - 2015 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.
  #
  
  __revision__ = "src/engine/SCons/Tool/pdftex.py rel_2.3.5:3347:d31d5a4e74b6 2015/07/31 14:36:10 bdbaddog"
  
  import os
  import SCons.Action
  import SCons.Util
  import SCons.Tool.tex
  
  PDFTeXAction = None
  
  # This action might be needed more than once if we are dealing with
  # labels and bibtex.
  PDFLaTeXAction = None
  
  def PDFLaTeXAuxAction(target = None, source= None, env=None):
      result = SCons.Tool.tex.InternalLaTeXAuxAction( PDFLaTeXAction, target, source, env )
      return result
  
  def PDFTeXLaTeXFunction(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."""
      basedir = os.path.split(str(source[0]))[0]
      abspath = os.path.abspath(basedir)
  
      if SCons.Tool.tex.is_LaTeX(source,env,abspath):
          result = PDFLaTeXAuxAction(target,source,env)
          if result != 0:
              SCons.Tool.tex.check_file_error_message(env['PDFLATEX'])
      else:
          result = PDFTeXAction(target,source,env)
          if result != 0:
              SCons.Tool.tex.check_file_error_message(env['PDFTEX'])
      return result
  
  PDFTeXLaTeXAction = None
  
  def generate(env):
      """Add Builders and construction variables for pdftex to an Environment."""
      global PDFTeXAction
      if PDFTeXAction is None:
          PDFTeXAction = SCons.Action.Action('$PDFTEXCOM', '$PDFTEXCOMSTR')
  
      global PDFLaTeXAction
      if PDFLaTeXAction is None:
          PDFLaTeXAction = SCons.Action.Action("$PDFLATEXCOM", "$PDFLATEXCOMSTR")
  
      global PDFTeXLaTeXAction
      if PDFTeXLaTeXAction is None:
          PDFTeXLaTeXAction = SCons.Action.Action(PDFTeXLaTeXFunction,
                                strfunction=SCons.Tool.tex.TeXLaTeXStrFunction)
  
      env.AppendUnique(LATEXSUFFIXES=SCons.Tool.LaTeXSuffixes)
  
      import pdf
      pdf.generate(env)
  
      bld = env['BUILDERS']['PDF']
      bld.add_action('.tex', PDFTeXLaTeXAction)
      bld.add_emitter('.tex', SCons.Tool.tex.tex_pdf_emitter)
  
      # Add the epstopdf builder after the pdftex builder 
      # so pdftex is the default for no source suffix
      pdf.generate2(env)
  
      SCons.Tool.tex.generate_common(env)
  
  def exists(env):
      SCons.Tool.tex.generate_darwin(env)
      return env.Detect('pdftex')
  
  # Local Variables:
  # tab-width:4
  # indent-tabs-mode:nil
  # End:
  # vim: set expandtab tabstop=4 shiftwidth=4:
  