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git-p4: Add a helper function to parse the full git diff-tree output.

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Signed-off-by: Chris Pettitt <cpettitt@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Chris Pettitt 2007-11-01 20:43:13 -07:00 committed by Junio C Hamano
parent 3e4bb087a1
commit b43b0a3c5c
1 changed files with 45 additions and 4 deletions
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49
contrib/fast-import/git-p4
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@ -71,6 +71,46 @@ def isP4Exec(kind):
a plus sign, it is also executable"""
return (re.search(r"(^[cku]?x)|\+.*x", kind) != None)
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
def parseDiffTreeEntry(entry):
"""Parses a single diff tree entry into its component elements.
See git-diff-tree(1) manpage for details about the format of the diff
output. This method returns a dictionary with the following elements:
src_mode - The mode of the source file
dst_mode - The mode of the destination file
src_sha1 - The sha1 for the source file
dst_sha1 - The sha1 fr the destination file
status - The one letter status of the diff (i.e. 'A', 'M', 'D', etc)
status_score - The score for the status (applicable for 'C' and 'R'
statuses). This is None if there is no score.
src - The path for the source file.
dst - The path for the destination file. This is only present for
copy or renames. If it is not present, this is None.
If the pattern is not matched, None is returned."""
match = diffTreePattern().next().match(entry)
if match:
return {
'src_mode': match.group(1),
'dst_mode': match.group(2),
'src_sha1': match.group(3),
'dst_sha1': match.group(4),
'status': match.group(5),
'status_score': match.group(6),
'src': match.group(7),
'dst': match.group(10)
}
return None
def p4CmdList(cmd, stdin=None, stdin_mode='w+b'):
cmd = "p4 -G %s" % cmd
if verbose:
@ -494,13 +534,14 @@ class P4Submit(Command):
else:
print "Applying %s" % (read_pipe("git log --max-count=1 --pretty=oneline %s" % id))
diffOpts = ("", "-M")[self.detectRename]
diff = read_pipe_lines("git diff-tree -r --name-status %s \"%s^\" \"%s\"" % (diffOpts, id, id))
diff = read_pipe_lines("git diff-tree -r %s \"%s^\" \"%s\"" % (diffOpts, id, id))
filesToAdd = set()
filesToDelete = set()
editedFiles = set()
for line in diff:
modifier = line[0]
path = line[1:].strip()
diff = parseDiffTreeEntry(line)
modifier = diff['status']
path = diff['src']
if modifier == "M":
system("p4 edit \"%s\"" % path)
editedFiles.add(path)
@ -513,7 +554,7 @@ class P4Submit(Command):
if path in filesToAdd:
filesToAdd.remove(path)
elif modifier == "R":
src, dest = line.strip().split("\t")[1:3]
src, dest = diff['src'], diff['dst']
system("p4 integrate -Dt \"%s\" \"%s\"" % (src, dest))
system("p4 edit \"%s\"" % (dest))
os.unlink(dest)