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() 76
