process_changelist.py
Go to the documentation of this file.00001 #! /usr/bin/env python 00002 00003 # Software License Agreement (BSD License) 00004 # 00005 # Copyright (c) 2008, Willow Garage, Inc. 00006 # All rights reserved. 00007 # 00008 # Redistribution and use in source and binary forms, with or without 00009 # modification, are permitted provided that the following conditions 00010 # are met: 00011 # 00012 # * Redistributions of source code must retain the above copyright 00013 # notice, this list of conditions and the following disclaimer. 00014 # * Redistributions in binary form must reproduce the above 00015 # copyright notice, this list of conditions and the following 00016 # disclaimer in the documentation and/or other materials provided 00017 # with the distribution. 00018 # * Neither the name of Willow Garage, Inc. nor the names of its 00019 # contributors may be used to endorse or promote products derived 00020 # from this software without specific prior written permission. 00021 # 00022 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 00023 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00024 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 00025 # FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 00026 # COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 00027 # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 00028 # BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 00029 # LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 00030 # CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00031 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 00032 # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 00033 # POSSIBILITY OF SUCH DAMAGE. 00034 00035 # author: Vijay Pradeep 00036 00037 import copy 00038 00039 def process_changelist(changelist, str_in): 00040 ''' 00041 Given a changelist, updates the specified parts of str_in. 00042 changelist - List of change requests, each of the form ((start, end), new_text) 00043 ''' 00044 00045 cl_sorted = copy.copy(changelist) 00046 cl_sorted.sort(lambda x,y:cmp(x[0][0], y[0][0])) 00047 00048 for k in range(len(cl_sorted)-1): 00049 if cl_sorted[k][0][1] > cl_sorted[k+1][0][0]: 00050 print "Ordering error between %s and %s" % (cl_sorted[k][0], cl_sorted[k+1][0]) 00051 assert False 00052 00053 str_out = "" 00054 cur_pos = 0 00055 for cur_span, new_text in cl_sorted: 00056 cur_start = cur_span[0] 00057 cur_end = cur_span[1] 00058 str_out = str_out + str_in[cur_pos:cur_start] + new_text 00059 cur_pos = cur_end 00060 00061 str_out = str_out + str_in[cur_pos:] 00062 00063 return str_out