Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 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() |