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Side by Side Diff: tools/concatenate-files.py

Issue 317633003: Revert "Support external startup data in V8." (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 6 years, 6 months ago
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1 #!/usr/bin/env python
2 #
3 # Copyright 2014 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 utility concatenates several files into one. On Unix-like systems
31 # it is equivalent to:
32 # cat file1 file2 file3 ...files... > target
33 #
34 # The reason for writing a seperate utility is that 'cat' is not available
35 # on all supported build platforms, but Python is, and hence this provides
36 # us with an easy and uniform way of doing this on all platforms.
37
38 import optparse
39
40
41 def Concatenate(filenames):
42 """Concatenate files.
43
44 Args:
45 files: Array of file names.
46 The last name is the target; all earlier ones are sources.
47
48 Returns:
49 True, if the operation was successful.
50 """
51 if len(filenames) < 2:
52 print "An error occured generating %s:\nNothing to do." % filenames[-1]
53 return False
54
55 try:
56 with open(filenames[-1], "wb") as target:
57 for filename in filenames[:-1]:
58 with open(filename, "rb") as current:
59 target.write(current.read())
60 return True
61 except IOError as e:
62 print "An error occured when writing %s:\n%s" % (filenames[-1], e)
63 return False
64
65
66 def main():
67 parser = optparse.OptionParser()
68 parser.set_usage("""Concatenate several files into one.
69 Equivalent to: cat file1 ... > target.""")
70 (options, args) = parser.parse_args()
71 exit(0 if Concatenate(args) else 1)
72
73
74 if __name__ == "__main__":
75 main()
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