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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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