text: """SCons.Tool.javah
  
  Tool-specific initialization for javah.
  
  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, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014 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/javah.py  2014/03/02 14:18:15 garyo"
  
  import os.path
  
  import SCons.Action
  import SCons.Builder
  import SCons.Node.FS
  import SCons.Tool.javac
  import SCons.Util
  
  def emit_java_headers(target, source, env):
      """Create and return lists of Java stub header files that will
      be created from a set of class files.
      """
      class_suffix = env.get('JAVACLASSSUFFIX', '.class')
      classdir = env.get('JAVACLASSDIR')
  
      if not classdir:
          try:
              s = source[0]
          except IndexError:
              classdir = '.'
          else:
              try:
                  classdir = s.attributes.java_classdir
              except AttributeError:
                  classdir = '.'
      classdir = env.Dir(classdir).rdir()
  
      if str(classdir) == '.':
          c_ = None
      else:
          c_ = str(classdir) + os.sep
  
      slist = []
      for src in source:
          try:
              classname = src.attributes.java_classname
          except AttributeError:
              classname = str(src)
              if c_ and classname[:len(c_)] == c_:
                  classname = classname[len(c_):]
              if class_suffix and classname[-len(class_suffix):] == class_suffix:
                  classname = classname[:-len(class_suffix)]
              classname = SCons.Tool.javac.classname(classname)
          s = src.rfile()
          s.attributes.java_classname = classname
          slist.append(s)
  
      s = source[0].rfile()
      if not hasattr(s.attributes, 'java_classdir'):
          s.attributes.java_classdir = classdir
  
      if target[0].__class__ is SCons.Node.FS.File:
          tlist = target
      else:
          if not isinstance(target[0], SCons.Node.FS.Dir):
              target[0].__class__ = SCons.Node.FS.Dir
              target[0]._morph()
          tlist = []
          for s in source:
              fname = s.attributes.java_classname.replace('.', '_') + '.h'
              t = target[0].File(fname)
              t.attributes.java_lookupdir = target[0]
              tlist.append(t)
  
      return tlist, source
  
  def JavaHOutFlagGenerator(target, source, env, for_signature):
      try:
          t = target[0]
      except (AttributeError, IndexError, TypeError):
          t = target
      try:
          return '-d ' + str(t.attributes.java_lookupdir)
      except AttributeError:
          return '-o ' + str(t)
  
  def getJavaHClassPath(env,target, source, for_signature):
      path = "${SOURCE.attributes.java_classdir}"
      if 'JAVACLASSPATH' in env and env['JAVACLASSPATH']:
          path = SCons.Util.AppendPath(path, env['JAVACLASSPATH'])
      return "-classpath %s" % (path)
  
  def generate(env):
      """Add Builders and construction variables for javah to an Environment."""
      java_javah = SCons.Tool.CreateJavaHBuilder(env)
      java_javah.emitter = emit_java_headers
  
      env['_JAVAHOUTFLAG']    = JavaHOutFlagGenerator
      env['JAVAH']            = 'javah'
      env['JAVAHFLAGS']       = SCons.Util.CLVar('')
      env['_JAVAHCLASSPATH']  = getJavaHClassPath
      env['JAVAHCOM']         = '$JAVAH $JAVAHFLAGS $_JAVAHOUTFLAG $_JAVAHCLASSPATH ${SOURCES.attributes.java_classname}'
      env['JAVACLASSSUFFIX']  = '.class'
  
  def exists(env):
      return env.Detect('javah')
  
  # Local Variables:
  # tab-width:4
  # indent-tabs-mode:nil
  # End:
  # vim: set expandtab tabstop=4 shiftwidth=4:
  