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Fix patching of files with Windows line endings on Posix systems

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This commit is contained in:
Marshall Greenblatt 2018-05-15 03:19:24 -07:00
parent 67708d07f2
commit dcf533cc3c
1 changed files with 39 additions and 1 deletions
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40
tools/patch_updater.py
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@ -192,10 +192,40 @@ for patch in patches:
added_paths.append(patch_path_abs)
if not options.revert:
# Chromium files are occasionally (incorrectly) checked in with Windows
# line endings. This will cause the patch tool to fail when attempting
# to patch those files on Posix systems. Convert any such files to Posix
# line endings before applying the patch.
converted_files = []
for patch_path in patch_paths:
patch_path_abs = os.path.abspath(os.path.join(patch_root_abs, \
patch_path))
if os.path.exists(patch_path_abs):
with open(patch_path_abs, 'rb') as fp:
contents = fp.read()
if "\r\n" in contents:
msg('Converting to Posix line endings for %s' % patch_path_abs)
converted_files.append(patch_path_abs)
contents = contents.replace("\r\n", "\n")
with open(patch_path_abs, 'wb') as fp:
fp.write(contents)
# Apply the patch file.
msg('Applying patch to %s' % patch_root_abs)
patch_string = open(patch_file, 'rb').read()
result = exec_cmd('patch -p0', patch_root_abs, patch_string)
if len(converted_files) > 0:
# Restore Windows line endings in converted files so that the diff is
# correct if/when the patch file is re-saved.
for patch_path_abs in converted_files:
with open(patch_path_abs, 'rb') as fp:
contents = fp.read()
msg('Converting to Windows line endings for %s' % patch_path_abs)
contents = contents.replace("\n", "\r\n")
with open(patch_path_abs, 'wb') as fp:
fp.write(contents)
if result['err'] != '':
raise Exception('Failed to apply patch file: %s' % result['err'])
sys.stdout.write(result['out'])
@ -238,10 +268,18 @@ for patch in patches:
# Re-create the patch file.
patch_paths_str = ' '.join(patch_paths)
cmd = 'git diff --no-prefix --relative --ignore-space-at-eol %s' % patch_paths_str
cmd = 'git diff --no-prefix --relative %s' % patch_paths_str
result = exec_cmd(cmd, patch_root_abs)
if result['err'] != '' and result['err'].find('warning:') != 0:
raise Exception('Failed to create patch file: %s' % result['err'])
if "\r\n" in result['out']:
# Patch files should always be saved with Posix line endings.
# This will avoid problems when attempting to re-apply the patch
# file on Posix systems.
msg('Converting to Posix line endings for %s' % patch_file)
result['out'] = result['out'].replace("\r\n", "\n")
f = open(patch_file, 'wb')
f.write(result['out'])
f.close()