]> git.ipfire.org Git - thirdparty/git.git/blobdiff - git-p4.py
Merge branch 'ls/p4-keep-empty-commits' into maint
[thirdparty/git.git] / git-p4.py
index 4ad7c6890cf57860a280169e73188a443cdc949c..a7ec1187066b90675f55e44103ba54e03d132caa 100755 (executable)
--- a/git-p4.py
+++ b/git-p4.py
@@ -43,6 +43,9 @@ verbose = False
 # Only labels/tags matching this will be imported/exported
 defaultLabelRegexp = r'[a-zA-Z0-9_\-.]+$'
 
+# Grab changes in blocks of this many revisions, unless otherwise requested
+defaultBlockSize = 512
+
 def p4_build_cmd(cmd):
     """Build a suitable p4 command line.
 
@@ -131,13 +134,11 @@ def read_pipe(c, ignore_error=False):
         sys.stderr.write('Reading pipe: %s\n' % str(c))
 
     expand = isinstance(c,basestring)
-    p = subprocess.Popen(c, stdout=subprocess.PIPE, shell=expand)
-    pipe = p.stdout
-    val = pipe.read()
-    if p.wait() and not ignore_error:
-        die('Command failed: %s' % str(c))
-
-    return val
+    p = subprocess.Popen(c, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=expand)
+    (out, err) = p.communicate()
+    if p.returncode != 0 and not ignore_error:
+        die('Command failed: %s\nError: %s' % (str(c), err))
+    return out
 
 def p4_read_pipe(c, ignore_error=False):
     real_cmd = p4_build_cmd(c)
@@ -189,14 +190,16 @@ def p4_has_move_command():
     # assume it failed because @... was invalid changelist
     return True
 
-def system(cmd):
+def system(cmd, ignore_error=False):
     expand = isinstance(cmd,basestring)
     if verbose:
         sys.stderr.write("executing %s\n" % str(cmd))
     retcode = subprocess.call(cmd, shell=expand)
-    if retcode:
+    if retcode and not ignore_error:
         raise CalledProcessError(retcode, cmd)
 
+    return retcode
+
 def p4_system(cmd):
     """Specifically invoke p4 as the system command. """
     real_cmd = p4_build_cmd(cmd)
@@ -249,6 +252,10 @@ def p4_reopen(type, f):
 def p4_move(src, dest):
     p4_system(["move", "-k", wildcard_encode(src), wildcard_encode(dest)])
 
+def p4_last_change():
+    results = p4CmdList(["changes", "-m", "1"])
+    return int(results[0]['change'])
+
 def p4_describe(change):
     """Make sure it returns a valid result by checking for
        the presence of field "time".  Return a dict of the
@@ -502,12 +509,14 @@ def p4Cmd(cmd):
 def p4Where(depotPath):
     if not depotPath.endswith("/"):
         depotPath += "/"
-    depotPath = depotPath + "..."
-    outputList = p4CmdList(["where", depotPath])
+    depotPathLong = depotPath + "..."
+    outputList = p4CmdList(["where", depotPathLong])
     output = None
     for entry in outputList:
         if "depotFile" in entry:
-            if entry["depotFile"] == depotPath:
+            # Search for the base client side depot path, as long as it starts with the branch's P4 path.
+            # The base path always ends with "/...".
+            if entry["depotFile"].find(depotPath) == 0 and entry["depotFile"][-4:] == "/...":
                 output = entry
                 break
         elif "data" in entry:
@@ -533,7 +542,12 @@ def p4Where(depotPath):
     return clientPath
 
 def currentGitBranch():
-    return read_pipe("git name-rev HEAD").split(" ")[1].strip()
+    retcode = system(["git", "symbolic-ref", "-q", "HEAD"], ignore_error=True)
+    if retcode != 0:
+        # on a detached head
+        return None
+    else:
+        return read_pipe(["git", "name-rev", "HEAD"]).split(" ")[1].strip()
 
 def isValidGitDir(path):
     if (os.path.exists(path + "/HEAD")
@@ -740,43 +754,77 @@ def createOrUpdateBranchesFromOrigin(localRefPrefix = "refs/remotes/p4/", silent
 def originP4BranchesExist():
         return gitBranchExists("origin") or gitBranchExists("origin/p4") or gitBranchExists("origin/p4/master")
 
-def p4ChangesForPaths(depotPaths, changeRange, block_size):
+
+def p4ParseNumericChangeRange(parts):
+    changeStart = int(parts[0][1:])
+    if parts[1] == '#head':
+        changeEnd = p4_last_change()
+    else:
+        changeEnd = int(parts[1])
+
+    return (changeStart, changeEnd)
+
+def chooseBlockSize(blockSize):
+    if blockSize:
+        return blockSize
+    else:
+        return defaultBlockSize
+
+def p4ChangesForPaths(depotPaths, changeRange, requestedBlockSize):
     assert depotPaths
-    assert block_size
 
-    # Parse the change range into start and end
+    # Parse the change range into start and end. Try to find integer
+    # revision ranges as these can be broken up into blocks to avoid
+    # hitting server-side limits (maxrows, maxscanresults). But if
+    # that doesn't work, fall back to using the raw revision specifier
+    # strings, without using block mode.
+
     if changeRange is None or changeRange == '':
-        changeStart = '@1'
-        changeEnd = '#head'
+        changeStart = 1
+        changeEnd = p4_last_change()
+        block_size = chooseBlockSize(requestedBlockSize)
     else:
         parts = changeRange.split(',')
         assert len(parts) == 2
-        changeStart = parts[0]
-        changeEnd = parts[1]
+        try:
+            (changeStart, changeEnd) = p4ParseNumericChangeRange(parts)
+            block_size = chooseBlockSize(requestedBlockSize)
+        except:
+            changeStart = parts[0][1:]
+            changeEnd = parts[1]
+            if requestedBlockSize:
+                die("cannot use --changes-block-size with non-numeric revisions")
+            block_size = None
 
     # Accumulate change numbers in a dictionary to avoid duplicates
     changes = {}
 
     for p in depotPaths:
         # Retrieve changes a block at a time, to prevent running
-        # into a MaxScanRows error from the server.
-        start = changeStart
-        end = changeEnd
-        get_another_block = True
-        while get_another_block:
-            new_changes = []
+        # into a MaxResults/MaxScanRows error from the server.
+
+        while True:
             cmd = ['changes']
-            cmd += ['-m', str(block_size)]
-            cmd += ["%s...%s,%s" % (p, start, end)]
+
+            if block_size:
+                end = min(changeEnd, changeStart + block_size)
+                revisionRange = "%d,%d" % (changeStart, end)
+            else:
+                revisionRange = "%s,%s" % (changeStart, changeEnd)
+
+            cmd += ["%s...@%s" % (p, revisionRange)]
+
             for line in p4_read_pipe_lines(cmd):
                 changeNum = int(line.split(" ")[1])
-                new_changes.append(changeNum)
                 changes[changeNum] = True
-            if len(new_changes) == block_size:
-                get_another_block = True
-                end = '@' + str(min(new_changes))
-            else:
-                get_another_block = False
+
+            if not block_size:
+                break
+
+            if end >= changeEnd:
+                break
+
+            changeStart = end + 1
 
     changelist = changes.keys()
     changelist.sort()
@@ -1246,7 +1294,7 @@ class P4Submit(Command, P4UserMap):
             editor = os.environ.get("P4EDITOR")
         else:
             editor = read_pipe("git var GIT_EDITOR").strip()
-        system([editor, template_file])
+        system(["sh", "-c", ('%s "$@"' % editor), editor, template_file])
 
         # If the file was not saved, prompt to see if this patch should
         # be skipped.  But skip this verification step if configured so.
@@ -1495,44 +1543,47 @@ class P4Submit(Command, P4UserMap):
         #
         # Let the user edit the change description, then submit it.
         #
-        if self.edit_template(fileName):
-            # read the edited message and submit
-            ret = True
-            tmpFile = open(fileName, "rb")
-            message = tmpFile.read()
-            tmpFile.close()
-            if self.isWindows:
-                message = message.replace("\r\n", "\n")
-            submitTemplate = message[:message.index(separatorLine)]
-            p4_write_pipe(['submit', '-i'], submitTemplate)
-
-            if self.preserveUser:
-                if p4User:
-                    # Get last changelist number. Cannot easily get it from
-                    # the submit command output as the output is
-                    # unmarshalled.
-                    changelist = self.lastP4Changelist()
-                    self.modifyChangelistUser(changelist, p4User)
-
-            # The rename/copy happened by applying a patch that created a
-            # new file.  This leaves it writable, which confuses p4.
-            for f in pureRenameCopy:
-                p4_sync(f, "-f")
+        submitted = False
 
-        else:
+        try:
+            if self.edit_template(fileName):
+                # read the edited message and submit
+                tmpFile = open(fileName, "rb")
+                message = tmpFile.read()
+                tmpFile.close()
+                if self.isWindows:
+                    message = message.replace("\r\n", "\n")
+                submitTemplate = message[:message.index(separatorLine)]
+                p4_write_pipe(['submit', '-i'], submitTemplate)
+
+                if self.preserveUser:
+                    if p4User:
+                        # Get last changelist number. Cannot easily get it from
+                        # the submit command output as the output is
+                        # unmarshalled.
+                        changelist = self.lastP4Changelist()
+                        self.modifyChangelistUser(changelist, p4User)
+
+                # The rename/copy happened by applying a patch that created a
+                # new file.  This leaves it writable, which confuses p4.
+                for f in pureRenameCopy:
+                    p4_sync(f, "-f")
+                submitted = True
+
+        finally:
             # skip this patch
-            ret = False
-            print "Submission cancelled, undoing p4 changes."
-            for f in editedFiles:
-                p4_revert(f)
-            for f in filesToAdd:
-                p4_revert(f)
-                os.remove(f)
-            for f in filesToDelete:
-                p4_revert(f)
+            if not submitted:
+                print "Submission cancelled, undoing p4 changes."
+                for f in editedFiles:
+                    p4_revert(f)
+                for f in filesToAdd:
+                    p4_revert(f)
+                    os.remove(f)
+                for f in filesToDelete:
+                    p4_revert(f)
 
         os.remove(fileName)
-        return ret
+        return submitted
 
     # Export git tags as p4 labels. Create a p4 label and then tag
     # with that.
@@ -1608,8 +1659,6 @@ class P4Submit(Command, P4UserMap):
     def run(self, args):
         if len(args) == 0:
             self.master = currentGitBranch()
-            if len(self.master) == 0 or not gitBranchExists("refs/heads/%s" % self.master):
-                die("Detecting current git branch failed!")
         elif len(args) == 1:
             self.master = args[0]
             if not branchExists(self.master):
@@ -1617,9 +1666,10 @@ class P4Submit(Command, P4UserMap):
         else:
             return False
 
-        allowSubmit = gitConfig("git-p4.allowSubmit")
-        if len(allowSubmit) > 0 and not self.master in allowSubmit.split(","):
-            die("%s is not in git-p4.allowSubmit" % self.master)
+        if self.master:
+            allowSubmit = gitConfig("git-p4.allowSubmit")
+            if len(allowSubmit) > 0 and not self.master in allowSubmit.split(","):
+                die("%s is not in git-p4.allowSubmit" % self.master)
 
         [upstream, settings] = findUpstreamBranchPoint()
         self.depotPath = settings['depot-paths'][0]
@@ -1653,7 +1703,10 @@ class P4Submit(Command, P4UserMap):
         if self.useClientSpec:
             self.clientSpecDirs = getClientSpec()
 
-        if self.useClientSpec:
+        # Check for the existance of P4 branches
+        branchesDetected = (len(p4BranchesInGit().keys()) > 1)
+
+        if self.useClientSpec and not branchesDetected:
             # all files are relative to the client spec
             self.clientPath = getClientRoot()
         else:
@@ -1684,7 +1737,12 @@ class P4Submit(Command, P4UserMap):
         self.check()
 
         commits = []
-        for line in read_pipe_lines(["git", "rev-list", "--no-merges", "%s..%s" % (self.origin, self.master)]):
+        if self.master:
+            commitish = self.master
+        else:
+            commitish = 'HEAD'
+
+        for line in read_pipe_lines(["git", "rev-list", "--no-merges", "%s..%s" % (self.origin, commitish)]):
             commits.append(line.strip())
         commits.reverse()
 
@@ -1904,10 +1962,14 @@ class View(object):
             if "unmap" in res:
                 # it will list all of them, but only one not unmap-ped
                 continue
+            if gitConfigBool("core.ignorecase"):
+                res['depotFile'] = res['depotFile'].lower()
             self.client_spec_path_cache[res['depotFile']] = self.convert_client_path(res["clientFile"])
 
         # not found files or unmap files set to ""
         for depotFile in fileArgs:
+            if gitConfigBool("core.ignorecase"):
+                depotFile = depotFile.lower()
             if depotFile not in self.client_spec_path_cache:
                 self.client_spec_path_cache[depotFile] = ""
 
@@ -1916,6 +1978,9 @@ class View(object):
            depot file should live.  Returns "" if the file should
            not be mapped in the client."""
 
+        if gitConfigBool("core.ignorecase"):
+            depot_path = depot_path.lower()
+
         if depot_path in self.client_spec_path_cache:
             return self.client_spec_path_cache[depot_path]
 
@@ -1969,7 +2034,7 @@ class P4Sync(Command, P4UserMap):
         self.syncWithOrigin = True
         self.importIntoRemotes = True
         self.maxChanges = ""
-        self.changes_block_size = 500
+        self.changes_block_size = None
         self.keepRepoPath = False
         self.depotPaths = None
         self.p4BranchesInGit = []
@@ -2140,10 +2205,17 @@ class P4Sync(Command, P4UserMap):
             # them back too.  This is not needed to the cygwin windows version,
             # just the native "NT" type.
             #
-            text = p4_read_pipe(['print', '-q', '-o', '-', file['depotFile']])
-            if p4_version_string().find("/NT") >= 0:
-                text = text.replace("\r\n", "\n")
-            contents = [ text ]
+            try:
+                text = p4_read_pipe(['print', '-q', '-o', '-', '%s@%s' % (file['depotFile'], file['change'])])
+            except Exception as e:
+                if 'Translation of file content failed' in str(e):
+                    type_base = 'binary'
+                else:
+                    raise e
+            else:
+                if p4_version_string().find('/NT') >= 0:
+                    text = text.replace('\r\n', '\n')
+                contents = [ text ]
 
         if type_base == "apple":
             # Apple filetype files will be streamed as a concatenation of
@@ -2270,8 +2342,11 @@ class P4Sync(Command, P4UserMap):
         else:
             return "%s <a@b>" % userid
 
-    # Stream a p4 tag
     def streamTag(self, gitStream, labelName, labelDetails, commit, epoch):
+        """ Stream a p4 tag.
+        commit is either a git commit, or a fast-import mark, ":<p4commit>"
+        """
+
         if verbose:
             print "writing tag %s for commit %s" % (labelName, commit)
         gitStream.write("tag %s\n" % labelName)
@@ -2338,7 +2413,7 @@ class P4Sync(Command, P4UserMap):
             return
 
         self.gitStream.write("commit %s\n" % branch)
-#        gitStream.write("mark :%s\n" % details["change"])
+        self.gitStream.write("mark :%s\n" % details["change"])
         self.committedChanges.add(int(details["change"]))
         committer = ""
         if author not in self.users:
@@ -2457,13 +2532,19 @@ class P4Sync(Command, P4UserMap):
             if change.has_key('change'):
                 # find the corresponding git commit; take the oldest commit
                 changelist = int(change['change'])
-                gitCommit = read_pipe(["git", "rev-list", "--max-count=1",
-                     "--reverse", ":/\[git-p4:.*change = %d\]" % changelist])
-                if len(gitCommit) == 0:
-                    print "could not find git commit for changelist %d" % changelist
-                else:
-                    gitCommit = gitCommit.strip()
+                if changelist in self.committedChanges:
+                    gitCommit = ":%d" % changelist       # use a fast-import mark
                     commitFound = True
+                else:
+                    gitCommit = read_pipe(["git", "rev-list", "--max-count=1",
+                        "--reverse", ":/\[git-p4:.*change = %d\]" % changelist], ignore_error=True)
+                    if len(gitCommit) == 0:
+                        print "importing label %s: could not find git commit for changelist %d" % (name, changelist)
+                    else:
+                        commitFound = True
+                        gitCommit = gitCommit.strip()
+
+                if commitFound:
                     # Convert from p4 time format
                     try:
                         tmwhen = time.strptime(labelDetails['Update'], "%Y/%m/%d %H:%M:%S")