From ce425eb4e16e5038ffc322cbafc80d641b0ad5eb Mon Sep 17 00:00:00 2001 From: Yang Zhao Date: Fri, 13 Dec 2019 15:52:46 -0800 Subject: [PATCH] git-p4: simplify regex pattern generation for parsing diff-tree It is not clear why a generator was used to create the regex used to parse git-diff-tree output; I assume an early implementation required it, but is not part of the mainline change. Simply use a lazily initialized global instead. Signed-off-by: Yang Zhao Reviewed-by: Ben Keene Signed-off-by: Junio C Hamano --- git-p4.py | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) diff --git a/git-p4.py b/git-p4.py index b7e31d4738..3af8df9f83 100755 --- a/git-p4.py +++ b/git-p4.py @@ -544,12 +544,7 @@ def getGitTags(): gitTags.add(tag) return gitTags -def diffTreePattern(): - # This is a simple generator for the diff tree regex pattern. This could be - # a class variable if this and parseDiffTreeEntry were a part of a class. - pattern = re.compile(':(\d+) (\d+) (\w+) (\w+) ([A-Z])(\d+)?\t(.*?)((\t(.*))|$)') - while True: - yield pattern +_diff_tree_pattern = None def parseDiffTreeEntry(entry): """Parses a single diff tree entry into its component elements. @@ -570,7 +565,11 @@ def parseDiffTreeEntry(entry): If the pattern is not matched, None is returned.""" - match = diffTreePattern().next().match(entry) + global _diff_tree_pattern + if not _diff_tree_pattern: + _diff_tree_pattern = re.compile(':(\d+) (\d+) (\w+) (\w+) ([A-Z])(\d+)?\t(.*?)((\t(.*))|$)') + + match = _diff_tree_pattern.match(entry) if match: return { 'src_mode': match.group(1),