# Copyright (C) 2005 Fredrik Kuivinen
#
-import sys, math, random, os, re, signal, tempfile, stat, errno, traceback
+import sys
+sys.path.append('''@@GIT_PYTHON_PATH@@''')
+
+import math, random, os, re, signal, tempfile, stat, errno, traceback
from heapq import heappush, heappop
from sets import Set
-sys.path.append('''@@GIT_PYTHON_PATH@@''')
from gitMergeCommon import *
outputIndent = 0
# The entry point to the merge code
# ---------------------------------
-def merge(h1, h2, branch1Name, branch2Name, graph, callDepth=0):
+def merge(h1, h2, branch1Name, branch2Name, graph, callDepth=0, ancestor=None):
'''Merge the commits h1 and h2, return the resulting virtual
commit object and a flag indicating the cleaness of the merge.'''
assert(isinstance(h1, Commit) and isinstance(h2, Commit))
- assert(isinstance(graph, Graph))
global outputIndent
output(h2)
sys.stdout.flush()
- ca = getCommonAncestors(graph, h1, h2)
+ if ancestor:
+ ca = [ancestor]
+ else:
+ assert(isinstance(graph, Graph))
+ ca = getCommonAncestors(graph, h1, h2)
output('found', len(ca), 'common ancestor(s):')
for x in ca:
output(x)
[shaRes, clean] = mergeTrees(h1.tree(), h2.tree(), mergedCA.tree(),
branch1Name, branch2Name)
- if clean or cacheOnly:
+ if graph and (clean or cacheOnly):
res = Commit(None, [h1, h2], tree=shaRes)
graph.addNode(res)
else:
def getFilesAndDirs(tree):
files = Set()
dirs = Set()
- out = runProgram(['git-ls-tree', '-r', '-z', tree])
+ out = runProgram(['git-ls-tree', '-r', '-z', '-t', tree])
for l in out.split('\0'):
m = getFilesRE.match(l)
if m:
orig = runProgram(['git-unpack-file', oSha]).rstrip()
src1 = runProgram(['git-unpack-file', aSha]).rstrip()
src2 = runProgram(['git-unpack-file', bSha]).rstrip()
- [out, code] = runProgram(['merge',
- '-L', branch1Name + '/' + aPath,
- '-L', 'orig/' + oPath,
- '-L', branch2Name + '/' + bPath,
- src1, orig, src2], returnCode=True)
+ try:
+ [out, code] = runProgram(['merge',
+ '-L', branch1Name + '/' + aPath,
+ '-L', 'orig/' + oPath,
+ '-L', branch2Name + '/' + bPath,
+ src1, orig, src2], returnCode=True)
+ except ProgramError, e:
+ print >>sys.stderr, e
+ die("Failed to execute 'merge'. merge(1) is used as the "
+ "file-level merge tool. Is 'merge' in your path?")
sha = runProgram(['git-hash-object', '-t', 'blob', '-w',
src1]).rstrip()
try:
createDir = not stat.S_ISDIR(os.lstat(p).st_mode)
- except:
+ except OSError:
createDir = True
if createDir:
runProgram(['git-update-index', '--add', '--cacheinfo',
'0%o' % mode, sha, path])
+def setIndexStages(path,
+ oSHA1, oMode,
+ aSHA1, aMode,
+ bSHA1, bMode,
+ clear=True):
+ istring = []
+ if clear:
+ istring.append("0 " + ("0" * 40) + "\t" + path + "\0")
+ if oMode:
+ istring.append("%o %s %d\t%s\0" % (oMode, oSHA1, 1, path))
+ if aMode:
+ istring.append("%o %s %d\t%s\0" % (aMode, aSHA1, 2, path))
+ if bMode:
+ istring.append("%o %s %d\t%s\0" % (bMode, bSHA1, 3, path))
+
+ runProgram(['git-update-index', '-z', '--index-info'],
+ input="".join(istring))
+
def removeFile(clean, path):
updateCache = cacheOnly or clean
updateWd = not cacheOnly
except OSError, e:
if e.errno != errno.ENOENT and e.errno != errno.EISDIR:
raise
+ try:
+ os.removedirs(os.path.dirname(path))
+ except OSError:
+ pass
def uniquePath(path, branch):
def fileExists(path):
continue
ren1.processed = True
- removeFile(True, ren1.srcName)
+
if ren2:
# Renamed in 1 and renamed in 2
assert(ren1.srcName == ren2.srcName)
'adding as', dstName2, 'instead.')
removeFile(False, ren2.dstName)
else:
- dstName2 = ren1.dstName
+ dstName2 = ren2.dstName
+ setIndexStages(dstName1,
+ None, None,
+ ren1.dstSha, ren1.dstMode,
+ None, None)
+ setIndexStages(dstName2,
+ None, None,
+ None, None,
+ ren2.dstSha, ren2.dstMode)
- updateFile(False, ren1.dstSha, ren1.dstMode, dstName1)
- updateFile(False, ren2.dstSha, ren2.dstMode, dstName2)
else:
+ removeFile(True, ren1.srcName)
+
[resSha, resMode, clean, merge] = \
mergeFile(ren1.srcName, ren1.srcSha, ren1.srcMode,
ren1.dstName, ren1.dstSha, ren1.dstMode,
cleanMerge = False
if not cacheOnly:
- updateFileExt(ren1.dstSha, ren1.dstMode, ren1.dstName,
- updateCache=True, updateWd=False)
+ setIndexStages(ren1.dstName,
+ ren1.srcSha, ren1.srcMode,
+ ren1.dstSha, ren1.dstMode,
+ ren2.dstSha, ren2.dstMode)
+
updateFile(clean, resSha, resMode, ren1.dstName)
else:
+ removeFile(True, ren1.srcName)
+
# Renamed in 1, maybe changed in 2
if renamesA == renames1:
stage = 3
tryMerge = True
if tryMerge:
+
+ oName, oSHA1, oMode = ren1.srcName, ren1.srcSha, ren1.srcMode
+ aName, bName = ren1.dstName, ren1.srcName
+ aSHA1, bSHA1 = ren1.dstSha, srcShaOtherBranch
+ aMode, bMode = ren1.dstMode, srcModeOtherBranch
+ aBranch, bBranch = branchName1, branchName2
+
+ if renamesA != renames1:
+ aName, bName = bName, aName
+ aSHA1, bSHA1 = bSHA1, aSHA1
+ aMode, bMode = bMode, aMode
+ aBranch, bBranch = bBranch, aBranch
+
[resSha, resMode, clean, merge] = \
- mergeFile(ren1.srcName, ren1.srcSha, ren1.srcMode,
- ren1.dstName, ren1.dstSha, ren1.dstMode,
- ren1.srcName, srcShaOtherBranch, srcModeOtherBranch,
- branchName1, branchName2)
+ mergeFile(oName, oSHA1, oMode,
+ aName, aSHA1, aMode,
+ bName, bSHA1, bMode,
+ aBranch, bBranch);
if merge or not clean:
output('Renaming', fmtRename(ren1.srcName, ren1.dstName))
cleanMerge = False
if not cacheOnly:
- updateFileExt(ren1.dstSha, ren1.dstMode, ren1.dstName,
- updateCache=True, updateWd=False)
+ setIndexStages(ren1.dstName,
+ oSHA1, oMode,
+ aSHA1, aMode,
+ bSHA1, bMode)
+
updateFile(clean, resSha, resMode, ren1.dstName)
return cleanMerge
if cacheOnly:
updateFile(False, sha, mode, path)
else:
- updateFileExt(aSha, aMode, path,
- updateCache=True, updateWd=False)
updateFileExt(sha, mode, path, updateCache=False, updateWd=True)
else:
die("ERROR: Fatal merge failure, shouldn't happen.")
# main entry point as merge strategy module
# The first parameters up to -- are merge bases, and the rest are heads.
-# This strategy module figures out merge bases itself, so we only
-# get heads.
if len(sys.argv) < 4:
usage()
+bases = []
for nextArg in xrange(1, len(sys.argv)):
if sys.argv[nextArg] == '--':
if len(sys.argv) != nextArg + 3:
except IndexError:
usage()
break
+ else:
+ bases.append(sys.argv[nextArg])
print 'Merging', h1, 'with', h2
h1 = runProgram(['git-rev-parse', '--verify', h1 + '^0']).rstrip()
h2 = runProgram(['git-rev-parse', '--verify', h2 + '^0']).rstrip()
- graph = buildGraph([h1, h2])
-
- [dummy, clean] = merge(graph.shaMap[h1], graph.shaMap[h2],
- firstBranch, secondBranch, graph)
+ if len(bases) == 1:
+ base = runProgram(['git-rev-parse', '--verify',
+ bases[0] + '^0']).rstrip()
+ ancestor = Commit(base, None)
+ [dummy, clean] = merge(Commit(h1, None), Commit(h2, None),
+ firstBranch, secondBranch, None, 0,
+ ancestor)
+ else:
+ graph = buildGraph([h1, h2])
+ [dummy, clean] = merge(graph.shaMap[h1], graph.shaMap[h2],
+ firstBranch, secondBranch, graph)
print ''
except: