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1 #!/usr/bin/env python | 1 #!/usr/bin/env python |
2 # Copyright (c) 2012 The Chromium Authors. All rights reserved. | 2 # Copyright (c) 2012 The Chromium Authors. All rights reserved. |
3 # Use of this source code is governed by a BSD-style license that can be | 3 # Use of this source code is governed by a BSD-style license that can be |
4 # found in the LICENSE file. | 4 # found in the LICENSE file. |
5 | 5 |
6 """ This module is a utility for applying an xml patch to an xml file. | 6 """ This module is a utility for applying an xml patch to an xml file. |
7 | 7 |
8 The format of the patch is described in the documentation for | 8 The format of the patch is described in the documentation for |
9 the patch_xml() function. | 9 the patch_xml() function. |
10 """ | 10 """ |
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132 find_target = None | 132 find_target = None |
133 | 133 |
134 # Otherwise this source element doesn't match any patch operations, add it. | 134 # Otherwise this source element doesn't match any patch operations, add it. |
135 else: | 135 else: |
136 new_element.append(copy.deepcopy(source_child)) | 136 new_element.append(copy.deepcopy(source_child)) |
137 | 137 |
138 # Raise exceptions if find/remove didn't finish before the end of the source. | 138 # Raise exceptions if find/remove didn't finish before the end of the source. |
139 if find_target is not None: | 139 if find_target is not None: |
140 raise Exception('Find operation never matched:' + find_target.tag) | 140 raise Exception('Find operation never matched:' + find_target.tag) |
141 elif len(remove_targets) != 0: | 141 elif len(remove_targets) != 0: |
142 raise Exception('Remove operation never matched: ' + remove_targets) | 142 raise Exception('Remove operation never matched: ' + str(remove_targets)) |
143 | 143 |
144 # We may have more add operations after source has run empty: | 144 # We may have more add operations after source has run empty: |
145 while patch_index < len(patch_children): | 145 while patch_index < len(patch_children): |
146 if IsPatchAddTag(patch_children[patch_index].tag): | 146 if IsPatchAddTag(patch_children[patch_index].tag): |
147 for addition in patch_children[patch_index]: | 147 for addition in patch_children[patch_index]: |
148 new_element.append(copy.deepcopy(addition)) | 148 new_element.append(copy.deepcopy(addition)) |
149 patch_index += 1 | 149 patch_index += 1 |
150 else: | 150 else: |
151 raise Exception('Non-add operation attempted after source end. ' + | 151 raise Exception('Non-add operation attempted after source end. ' + |
152 'Tag: %s, Children %s' % | 152 'Tag: %s, Children %s' % |
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165 # Because the tag can be a sub-element of arbitrary elements it could inherit | 165 # Because the tag can be a sub-element of arbitrary elements it could inherit |
166 # any default namespace. | 166 # any default namespace. |
167 return tag.endswith('PatchAdd') | 167 return tag.endswith('PatchAdd') |
168 | 168 |
169 | 169 |
170 def IsPatchRemoveTag(tag): | 170 def IsPatchRemoveTag(tag): |
171 # We look at the end of the tag because we need to ignore the namespace. | 171 # We look at the end of the tag because we need to ignore the namespace. |
172 # Because the tag can be a sub-element of arbitrary elements it could inherit | 172 # Because the tag can be a sub-element of arbitrary elements it could inherit |
173 # any default namespace. | 173 # any default namespace. |
174 return tag.endswith('PatchRemove') | 174 return tag.endswith('PatchRemove') |
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