1  #!/usr/bin/env python
  2  # Copyright (C) 2014 Apple Inc. All rights reserved.
  3  #
  4  # Redistribution and use in source and binary forms, with or without
  5  # modification, are permitted provided that the following conditions
  6  # are met:
  7  # 1.  Redistributions of source code must retain the above copyright
  8  #     notice, this list of conditions and the following disclaimer.
  9  # 2.  Redistributions in binary form must reproduce the above copyright
 10  #     notice, this list of conditions and the following disclaimer in the
 11  #     documentation and/or other materials provided with the distribution.
 12  #
 13  # THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
 14  # EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 15  # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 16  # DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
 17  # DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 18  # (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 19  # LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 20  # ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 21  # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 22  # SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 23  
 24  from __future__ import print_function
 25  import io
 26  import os
 27  from optparse import OptionParser
 28  import sys
 29  from jsmin import jsmin
 30  is_3 = sys.version_info >= (3, 0)
 31  
 32  
 33  def stringifyCodepoint(code):
 34      if code < 128:
 35          return '{0:d}'.format(code)
 36      else:
 37          return "'\\x{0:02x}'".format(code)
 38  
 39  
 40  def chunk(list, chunkSize):
 41      for i in range(0, len(list), chunkSize):
 42          yield list[i:i + chunkSize]
 43  
 44  
 45  def main():
 46      parser = OptionParser(usage="usage: %prog [options] header source [input [input...]]")
 47      parser.add_option('--no-minify', action='store_true', help='Do not run the input files through jsmin')
 48      parser.add_option('-n', '--namespace', help='Namespace to use')
 49      (options, arguments) = parser.parse_args()
 50      if not options.namespace:
 51          print('Error: must provide a namespace')
 52          parser.print_usage()
 53          exit(-1)
 54      if len(arguments) < 3:
 55          print('Error: must provide at least 3 arguments')
 56          parser.print_usage()
 57          exit(-1)
 58  
 59      namespace = options.namespace
 60      headerPath = arguments[0]
 61      sourcePath = arguments[1]
 62      inputPaths = arguments[2:]
 63  
 64      headerFile = open(headerPath, 'w')
 65      print('namespace {0:s} {{'.format(namespace), file=headerFile)
 66  
 67      sourceFile = open(sourcePath, 'w')
 68      print('#include "{0:s}"'.format(os.path.basename(headerPath)), file=sourceFile)
 69      print('namespace {0:s} {{'.format(namespace), file=sourceFile)
 70  
 71      for inputFileName in inputPaths:
 72  
 73          if is_3:
 74              inputStream = io.open(inputFileName, encoding='utf-8')
 75          else:
 76              inputStream = io.FileIO(inputFileName)
 77  
 78          data = inputStream.read()
 79  
 80          if not options.no_minify:
 81              characters = jsmin(data)
 82          else:
 83              characters = data
 84  
 85          if is_3:
 86              codepoints = bytearray(characters, encoding='utf-8')
 87          else:
 88              codepoints = list(map(ord, characters))
 89  
 90          # Use the size of codepoints instead of the characters
 91          # because UTF-8 characters may need more than one byte.
 92          size = len(codepoints)
 93  
 94          variableName = os.path.splitext(os.path.basename(inputFileName))[0]
 95  
 96          print('extern const char {0:s}JavaScript[{1:d}];'.format(variableName, size), file=headerFile)
 97          print('const char {0:s}JavaScript[{1:d}] = {{'.format(variableName, size), file=sourceFile)
 98  
 99          for codepointChunk in chunk(codepoints, 16):
100              print('    {0:s},'.format(','.join(map(stringifyCodepoint, codepointChunk))), file=sourceFile)
101  
102          print('};', file=sourceFile)
103  
104      print('}} // namespace {0:s}'.format(namespace), file=headerFile)
105      print('}} // namespace {0:s}'.format(namespace), file=sourceFile)
106  
107  if __name__ == '__main__':
108      main()