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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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