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authorJunio C Hamano <gitster@pobox.com>2012-02-23 21:30:31 (GMT)
committerJunio C Hamano <gitster@pobox.com>2012-02-23 21:30:31 (GMT)
commitd065f687452a666c74f353306bb14debe48e40d3 (patch)
tree275b59fe9f16903a0c7b1ebbecd74aeb7778afa7 /contrib/fast-import/git-p4
parentfd1727f5fa1ca1817eee36f99c9245dc2217ecac (diff)
parent60df071c6cce6ee3f92f62042da11c62fe113817 (diff)
downloadgit-d065f687452a666c74f353306bb14debe48e40d3.zip
git-d065f687452a666c74f353306bb14debe48e40d3.tar.gz
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Merge branch 'ld/git-p4-expanded-keywords'
* ld/git-p4-expanded-keywords: : Teach git-p4 to unexpand $RCS$-like keywords that are embedded in : tracked contents in order to reduce unnecessary merge conflicts. git-p4: add initial support for RCS keywords
Diffstat (limited to 'contrib/fast-import/git-p4')
-rwxr-xr-xcontrib/fast-import/git-p4118
1 files changed, 108 insertions, 10 deletions
diff --git a/contrib/fast-import/git-p4 b/contrib/fast-import/git-p4
index d2fd265..0539553 100755
--- a/contrib/fast-import/git-p4
+++ b/contrib/fast-import/git-p4
@@ -10,7 +10,7 @@
import optparse, sys, os, marshal, subprocess, shelve
import tempfile, getopt, os.path, time, platform
-import re
+import re, shutil
verbose = False
@@ -186,6 +186,47 @@ def split_p4_type(p4type):
mods = s[1]
return (base, mods)
+#
+# return the raw p4 type of a file (text, text+ko, etc)
+#
+def p4_type(file):
+ results = p4CmdList(["fstat", "-T", "headType", file])
+ return results[0]['headType']
+
+#
+# Given a type base and modifier, return a regexp matching
+# the keywords that can be expanded in the file
+#
+def p4_keywords_regexp_for_type(base, type_mods):
+ if base in ("text", "unicode", "binary"):
+ kwords = None
+ if "ko" in type_mods:
+ kwords = 'Id|Header'
+ elif "k" in type_mods:
+ kwords = 'Id|Header|Author|Date|DateTime|Change|File|Revision'
+ else:
+ return None
+ pattern = r"""
+ \$ # Starts with a dollar, followed by...
+ (%s) # one of the keywords, followed by...
+ (:[^$]+)? # possibly an old expansion, followed by...
+ \$ # another dollar
+ """ % kwords
+ return pattern
+ else:
+ return None
+
+#
+# Given a file, return a regexp matching the possible
+# RCS keywords that will be expanded, or None for files
+# with kw expansion turned off.
+#
+def p4_keywords_regexp_for_file(file):
+ if not os.path.exists(file):
+ return None
+ else:
+ (type_base, type_mods) = split_p4_type(p4_type(file))
+ return p4_keywords_regexp_for_type(type_base, type_mods)
def setP4ExecBit(file, mode):
# Reopens an already open file and changes the execute bit to match
@@ -753,6 +794,29 @@ class P4Submit(Command, P4UserMap):
return result
+ def patchRCSKeywords(self, file, pattern):
+ # Attempt to zap the RCS keywords in a p4 controlled file matching the given pattern
+ (handle, outFileName) = tempfile.mkstemp(dir='.')
+ try:
+ outFile = os.fdopen(handle, "w+")
+ inFile = open(file, "r")
+ regexp = re.compile(pattern, re.VERBOSE)
+ for line in inFile.readlines():
+ line = regexp.sub(r'$\1$', line)
+ outFile.write(line)
+ inFile.close()
+ outFile.close()
+ # Forcibly overwrite the original file
+ os.unlink(file)
+ shutil.move(outFileName, file)
+ except:
+ # cleanup our temporary file
+ os.unlink(outFileName)
+ print "Failed to strip RCS keywords in %s" % file
+ raise
+
+ print "Patched up RCS keywords in %s" % file
+
def p4UserForCommit(self,id):
# Return the tuple (perforce user,git email) for a given git commit id
self.getUserMapFromPerforceServer()
@@ -918,6 +982,7 @@ class P4Submit(Command, P4UserMap):
filesToDelete = set()
editedFiles = set()
filesToChangeExecBit = {}
+
for line in diff:
diff = parseDiffTreeEntry(line)
modifier = diff['status']
@@ -964,9 +1029,45 @@ class P4Submit(Command, P4UserMap):
patchcmd = diffcmd + " | git apply "
tryPatchCmd = patchcmd + "--check -"
applyPatchCmd = patchcmd + "--check --apply -"
+ patch_succeeded = True
if os.system(tryPatchCmd) != 0:
+ fixed_rcs_keywords = False
+ patch_succeeded = False
print "Unfortunately applying the change failed!"
+
+ # Patch failed, maybe it's just RCS keyword woes. Look through
+ # the patch to see if that's possible.
+ if gitConfig("git-p4.attemptRCSCleanup","--bool") == "true":
+ file = None
+ pattern = None
+ kwfiles = {}
+ for file in editedFiles | filesToDelete:
+ # did this file's delta contain RCS keywords?
+ pattern = p4_keywords_regexp_for_file(file)
+
+ if pattern:
+ # this file is a possibility...look for RCS keywords.
+ regexp = re.compile(pattern, re.VERBOSE)
+ for line in read_pipe_lines(["git", "diff", "%s^..%s" % (id, id), file]):
+ if regexp.search(line):
+ if verbose:
+ print "got keyword match on %s in %s in %s" % (pattern, line, file)
+ kwfiles[file] = pattern
+ break
+
+ for file in kwfiles:
+ if verbose:
+ print "zapping %s with %s" % (line,pattern)
+ self.patchRCSKeywords(file, kwfiles[file])
+ fixed_rcs_keywords = True
+
+ if fixed_rcs_keywords:
+ print "Retrying the patch with RCS keywords cleaned up"
+ if os.system(tryPatchCmd) == 0:
+ patch_succeeded = True
+
+ if not patch_succeeded:
print "What do you want to do?"
response = "x"
while response != "s" and response != "a" and response != "w":
@@ -1585,15 +1686,12 @@ class P4Sync(Command, P4UserMap):
# Note that we do not try to de-mangle keywords on utf16 files,
# even though in theory somebody may want that.
- if type_base in ("text", "unicode", "binary"):
- if "ko" in type_mods:
- text = ''.join(contents)
- text = re.sub(r'\$(Id|Header):[^$]*\$', r'$\1$', text)
- contents = [ text ]
- elif "k" in type_mods:
- text = ''.join(contents)
- text = re.sub(r'\$(Id|Header|Author|Date|DateTime|Change|File|Revision):[^$]*\$', r'$\1$', text)
- contents = [ text ]
+ pattern = p4_keywords_regexp_for_type(type_base, type_mods)
+ if pattern:
+ regexp = re.compile(pattern, re.VERBOSE)
+ text = ''.join(contents)
+ text = regexp.sub(r'$\1$', text)
+ contents = [ text ]
self.gitStream.write("M %s inline %s\n" % (git_mode, relPath))