diff options
Diffstat (limited to 'git-p4.py')
| -rwxr-xr-x | git-p4.py | 160 |
1 files changed, 114 insertions, 46 deletions
@@ -8,7 +8,13 @@ # License: MIT <http://www.opensource.org/licenses/mit-license.php> # -import optparse, sys, os, marshal, subprocess, shelve +import sys +if sys.hexversion < 0x02040000: + # The limiter is the subprocess module + sys.stderr.write("git-p4: requires Python 2.4 or later.\n") + sys.exit(1) + +import optparse, os, marshal, subprocess, shelve import tempfile, getopt, os.path, time, platform import re, shutil @@ -566,29 +572,49 @@ def gitConfigList(key): _gitConfig[key] = read_pipe("git config --get-all %s" % key, ignore_error=True).strip().split(os.linesep) return _gitConfig[key] -def p4BranchesInGit(branchesAreInRemotes = True): +def p4BranchesInGit(branchesAreInRemotes=True): + """Find all the branches whose names start with "p4/", looking + in remotes or heads as specified by the argument. Return + a dictionary of { branch: revision } for each one found. + The branch names are the short names, without any + "p4/" prefix.""" + branches = {} cmdline = "git rev-parse --symbolic " if branchesAreInRemotes: - cmdline += " --remotes" + cmdline += "--remotes" else: - cmdline += " --branches" + cmdline += "--branches" for line in read_pipe_lines(cmdline): line = line.strip() - ## only import to p4/ - if not line.startswith('p4/') or line == "p4/HEAD": + # only import to p4/ + if not line.startswith('p4/'): + continue + # special symbolic ref to p4/master + if line == "p4/HEAD": continue - branch = line - # strip off p4 - branch = re.sub ("^p4/", "", line) + # strip off p4/ prefix + branch = line[len("p4/"):] branches[branch] = parseRevision(line) + return branches +def branch_exists(branch): + """Make sure that the given ref name really exists.""" + + cmd = [ "git", "rev-parse", "--symbolic", "--verify", branch ] + p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE) + out, _ = p.communicate() + if p.returncode: + return False + # expect exactly one line of output: the branch name + return out.rstrip() == branch + def findUpstreamBranchPoint(head = "HEAD"): branches = p4BranchesInGit() # map from depot-path to branch name @@ -921,7 +947,8 @@ class P4Submit(Command, P4UserMap): optparse.make_option("--dry-run", "-n", dest="dry_run", action="store_true"), optparse.make_option("--prepare-p4-only", dest="prepare_p4_only", action="store_true"), optparse.make_option("--conflict", dest="conflict_behavior", - choices=self.conflict_behavior_choices) + choices=self.conflict_behavior_choices), + optparse.make_option("--branch", dest="branch"), ] self.description = "Submit changes from git to the perforce depot." self.usage += " [name of git branch to submit into perforce depot]" @@ -934,6 +961,7 @@ class P4Submit(Command, P4UserMap): self.isWindows = (platform.system() == "Windows") self.exportLabels = False self.p4HasMoveCommand = p4_has_move_command() + self.branch = None def check(self): if len(p4CmdList("opened ...")) > 0: @@ -1670,6 +1698,8 @@ class P4Submit(Command, P4UserMap): print "All commits applied!" sync = P4Sync() + if self.branch: + sync.branch = self.branch sync.run([]) rebase = P4Rebase() @@ -2523,13 +2553,6 @@ class P4Sync(Command, P4UserMap): branch = branch[len(self.projectName):] self.knownBranches[branch] = branch - def listExistingP4GitBranches(self): - # branches holds mapping from name to commit - branches = p4BranchesInGit(self.importIntoRemotes) - self.p4BranchesInGit = branches.keys() - for branch in branches.keys(): - self.initialParents[self.refPrefix + branch] = branches[branch] - def updateOptionDict(self, d): option_keys = {} if self.keepRepoPath: @@ -2701,6 +2724,7 @@ class P4Sync(Command, P4UserMap): files = self.extractFilesFromCommit(description) self.commit(description, files, self.branch, self.initialParent) + # only needed once, to connect to the previous commit self.initialParent = "" except IOError: print self.gitError.read() @@ -2766,34 +2790,31 @@ class P4Sync(Command, P4UserMap): def run(self, args): self.depotPaths = [] self.changeRange = "" - self.initialParent = "" self.previousDepotPaths = [] + self.hasOrigin = False # map from branch depot path to parent branch self.knownBranches = {} self.initialParents = {} - self.hasOrigin = originP4BranchesExist() - if not self.syncWithOrigin: - self.hasOrigin = False if self.importIntoRemotes: self.refPrefix = "refs/remotes/p4/" else: self.refPrefix = "refs/heads/p4/" - if self.syncWithOrigin and self.hasOrigin: - if not self.silent: - print "Syncing with origin first by calling git fetch origin" - system("git fetch origin") + if self.syncWithOrigin: + self.hasOrigin = originP4BranchesExist() + if self.hasOrigin: + if not self.silent: + print 'Syncing with origin first, using "git fetch origin"' + system("git fetch origin") + branch_arg_given = bool(self.branch) if len(self.branch) == 0: self.branch = self.refPrefix + "master" if gitBranchExists("refs/heads/p4") and self.importIntoRemotes: system("git update-ref %s refs/heads/p4" % self.branch) - system("git branch -D p4"); - # create it /after/ importing, when master exists - if not gitBranchExists(self.refPrefix + "HEAD") and self.importIntoRemotes and gitBranchExists(self.branch): - system("git symbolic-ref %sHEAD %s" % (self.refPrefix, self.branch)) + system("git branch -D p4") # accept either the command-line option, or the configuration variable if self.useClientSpec: @@ -2810,12 +2831,25 @@ class P4Sync(Command, P4UserMap): if args == []: if self.hasOrigin: createOrUpdateBranchesFromOrigin(self.refPrefix, self.silent) - self.listExistingP4GitBranches() + + # branches holds mapping from branch name to sha1 + branches = p4BranchesInGit(self.importIntoRemotes) + + # restrict to just this one, disabling detect-branches + if branch_arg_given: + short = self.branch.split("/")[-1] + if short in branches: + self.p4BranchesInGit = [ short ] + else: + self.p4BranchesInGit = branches.keys() if len(self.p4BranchesInGit) > 1: if not self.silent: print "Importing from/into multiple branches" self.detectBranches = True + for branch in branches.keys(): + self.initialParents[self.refPrefix + branch] = \ + branches[branch] if self.verbose: print "branches: %s" % self.p4BranchesInGit @@ -2852,13 +2886,21 @@ class P4Sync(Command, P4UserMap): if p4Change > 0: self.depotPaths = sorted(self.previousDepotPaths) self.changeRange = "@%s,#head" % p4Change - if not self.detectBranches: - self.initialParent = parseRevision(self.branch) if not self.silent and not self.detectBranches: print "Performing incremental import into %s git branch" % self.branch + # accept multiple ref name abbreviations: + # refs/foo/bar/branch -> use it exactly + # p4/branch -> prepend refs/remotes/ or refs/heads/ + # branch -> prepend refs/remotes/p4/ or refs/heads/p4/ if not self.branch.startswith("refs/"): - self.branch = "refs/heads/" + self.branch + if self.importIntoRemotes: + prepend = "refs/remotes/" + else: + prepend = "refs/heads/" + if not self.branch.startswith("p4/"): + prepend += "p4/" + self.branch = prepend + self.branch if len(args) == 0 and self.depotPaths: if not self.silent: @@ -2969,8 +3011,21 @@ class P4Sync(Command, P4UserMap): else: # catch "git p4 sync" with no new branches, in a repo that # does not have any existing p4 branches - if len(args) == 0 and not self.p4BranchesInGit: - die("No remote p4 branches. Perhaps you never did \"git p4 clone\" in here."); + if len(args) == 0: + if not self.p4BranchesInGit: + die("No remote p4 branches. Perhaps you never did \"git p4 clone\" in here.") + + # The default branch is master, unless --branch is used to + # specify something else. Make sure it exists, or complain + # nicely about how to use --branch. + if not self.detectBranches: + if not branch_exists(self.branch): + if branch_arg_given: + die("Error: branch %s does not exist." % self.branch) + else: + die("Error: no branch %s; perhaps specify one with --branch." % + self.branch) + if self.verbose: print "Getting p4 changes for %s...%s" % (', '.join(self.depotPaths), self.changeRange) @@ -2988,6 +3043,14 @@ class P4Sync(Command, P4UserMap): self.updatedBranches = set() + if not self.detectBranches: + if args: + # start a new branch + self.initialParent = "" + else: + # build on a previous revision + self.initialParent = parseRevision(self.branch) + self.importChanges(changes) if not self.silent: @@ -3020,6 +3083,13 @@ class P4Sync(Command, P4UserMap): read_pipe("git update-ref -d %s" % branch) os.rmdir(os.path.join(os.environ.get("GIT_DIR", ".git"), self.tempBranchLocation)) + # Create a symbolic ref p4/HEAD pointing to p4/<branch> to allow + # a convenient shortcut refname "p4". + if self.importIntoRemotes: + head_ref = self.refPrefix + "HEAD" + if not gitBranchExists(head_ref) and gitBranchExists(self.branch): + system(["git", "symbolic-ref", head_ref, self.branch]) + return True class P4Rebase(Command): @@ -3129,17 +3199,15 @@ class P4Clone(P4Sync): if not P4Sync.run(self, depotPaths): return False - if self.branch != "master": - if self.importIntoRemotes: - masterbranch = "refs/remotes/p4/master" - else: - masterbranch = "refs/heads/p4/master" - if gitBranchExists(masterbranch): - system("git branch master %s" % masterbranch) - if not self.cloneBare: - system("git checkout -f") - else: - print "Could not detect main branch. No checkout/master branch created." + + # create a master branch and check out a work tree + if gitBranchExists(self.branch): + system([ "git", "branch", "master", self.branch ]) + if not self.cloneBare: + system([ "git", "checkout", "-f" ]) + else: + print 'Not checking out any branch, use ' \ + '"git checkout -q -b master <branch>"' # auto-set this variable if invoked with --use-client-spec if self.useClientSpec_from_options: |