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| 1 #!/usr/bin/env python |
| 2 # |
| 3 # Copyright 2011 the V8 project authors. All rights reserved. |
| 4 # Redistribution and use in source and binary forms, with or without |
| 5 # modification, are permitted provided that the following conditions are |
| 6 # met: |
| 7 # |
| 8 # * Redistributions of source code must retain the above copyright |
| 9 # notice, this list of conditions and the following disclaimer. |
| 10 # * Redistributions in binary form must reproduce the above |
| 11 # copyright notice, this list of conditions and the following |
| 12 # disclaimer in the documentation and/or other materials provided |
| 13 # with the distribution. |
| 14 # * Neither the name of Google Inc. nor the names of its |
| 15 # contributors may be used to endorse or promote products derived |
| 16 # from this software without specific prior written permission. |
| 17 # |
| 18 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 19 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 20 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 21 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 22 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 23 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 24 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 25 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 26 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 27 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 28 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 29 |
| 30 # This is a utility for converting I18N JavaScript source code into C-style |
| 31 # char arrays. It is used for embedded JavaScript code in the V8 |
| 32 # library. |
| 33 # This is a pared down copy of v8/tools/js2c.py that avoids use of |
| 34 # v8/src/natives.h and produces different cc template. |
| 35 |
| 36 import os, re, sys, string |
| 37 |
| 38 |
| 39 def ToCArray(lines): |
| 40 result = [] |
| 41 for chr in lines: |
| 42 value = ord(chr) |
| 43 assert value < 128 |
| 44 result.append(str(value)) |
| 45 result.append("0") |
| 46 return ", ".join(result) |
| 47 |
| 48 |
| 49 def RemoveCommentsAndTrailingWhitespace(lines): |
| 50 lines = re.sub(r'//.*\n', '\n', lines) # end-of-line comments |
| 51 lines = re.sub(re.compile(r'/\*.*?\*/', re.DOTALL), '', lines) # comments. |
| 52 lines = re.sub(r'\s+\n+', '\n', lines) # trailing whitespace |
| 53 return lines |
| 54 |
| 55 |
| 56 def ReadFile(filename): |
| 57 file = open(filename, "rt") |
| 58 try: |
| 59 lines = file.read() |
| 60 finally: |
| 61 file.close() |
| 62 return lines |
| 63 |
| 64 |
| 65 EVAL_PATTERN = re.compile(r'\beval\s*\('); |
| 66 WITH_PATTERN = re.compile(r'\bwith\s*\('); |
| 67 |
| 68 |
| 69 def Validate(lines, file): |
| 70 lines = RemoveCommentsAndTrailingWhitespace(lines) |
| 71 # Because of simplified context setup, eval and with is not |
| 72 # allowed in the natives files. |
| 73 eval_match = EVAL_PATTERN.search(lines) |
| 74 if eval_match: |
| 75 raise ("Eval disallowed in natives: %s" % file) |
| 76 with_match = WITH_PATTERN.search(lines) |
| 77 if with_match: |
| 78 raise ("With statements disallowed in natives: %s" % file) |
| 79 |
| 80 |
| 81 HEADER_TEMPLATE = """\ |
| 82 // Copyright 2011 Google Inc. All Rights Reserved. |
| 83 |
| 84 // This file was generated from .js source files by gyp. If you |
| 85 // want to make changes to this file you should either change the |
| 86 // javascript source files or the i18n-js2c.py script. |
| 87 |
| 88 #include "src/extensions/experimental/i18n-natives.h" |
| 89 |
| 90 namespace v8 { |
| 91 namespace internal { |
| 92 |
| 93 // static |
| 94 const char* I18Natives::GetScriptSource() { |
| 95 // JavaScript source gets injected here. |
| 96 static const char i18n_source[] = {%s}; |
| 97 |
| 98 return i18n_source; |
| 99 } |
| 100 |
| 101 } // internal |
| 102 } // v8 |
| 103 """ |
| 104 |
| 105 |
| 106 def JS2C(source, target): |
| 107 filename = str(source) |
| 108 |
| 109 lines = ReadFile(filename) |
| 110 Validate(lines, filename) |
| 111 data = ToCArray(lines) |
| 112 |
| 113 # Emit result |
| 114 output = open(target, "w") |
| 115 output.write(HEADER_TEMPLATE % data) |
| 116 output.close() |
| 117 |
| 118 |
| 119 def main(): |
| 120 target = sys.argv[1] |
| 121 source = sys.argv[2] |
| 122 JS2C(source, target) |
| 123 |
| 124 |
| 125 if __name__ == "__main__": |
| 126 main() |
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