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#!/usr/bin/python
#
# p4-fast-export.py
#
# Author: Simon Hausmann <hausmann@kde.org>
# License: MIT <http://www.opensource.org/licenses/mit-license.php>
#
# TODO: - support integrations (at least p4i)
# - support incremental imports
# - create tags
# - instead of reading all files into a variable try to pipe from
# - p4 print directly to stdout. need to figure out file size somehow
# though.
# - support p4 submit (hah!)
# - don't hardcode the import to master
#
import os, string, sys, time
if len(sys.argv) != 2:
sys.stderr.write("usage: %s //depot/path[@revRange]\n" % sys.argv[0]);
sys.stderr.write("\n example:\n");
sys.stderr.write(" %s //depot/my/project/ -- to import everything\n");
sys.stderr.write(" %s //depot/my/project/@1,6 -- to import only from revision 1 to 6\n");
sys.stderr.write("\n");
sys.stderr.write(" (a ... is not needed in the path p4 specification, it's added implicitly)\n");
sys.stderr.write("\n");
sys.exit(1)
prefix = sys.argv[1]
changeRange = ""
try:
atIdx = prefix.index("@")
changeRange = prefix[atIdx:]
prefix = prefix[0:atIdx]
except ValueError:
changeRange = ""
if not prefix.endswith("/"):
prefix += "/"
def describe(change):
output = os.popen("p4 describe %s" % change).readlines()
firstLine = output[0]
splitted = firstLine.split(" ")
author = splitted[3]
author = author[:author.find("@")]
tm = time.strptime(splitted[5] + " " + splitted[6] + time.tzname[0], "%Y/%m/%d %H:%M:%S %Z")
epoch = int(time.mktime(tm))
filesSection = 0
try:
filesSection = output.index("Affected files ...\n")
except ValueError:
sys.stderr.write("Change %s doesn't seem to affect any files. Weird.\n" % change)
return [], [], [], [], []
differencesSection = 0
try:
differencesSection = output.index("Differences ...\n")
except ValueError:
sys.stderr.write("Change %s doesn't seem to have a differences section. Weird.\n" % change)
return [], [], [], [], []
log = output[2:filesSection - 1]
lines = output[filesSection + 2:differencesSection - 1]
changed = []
removed = []
for line in lines:
# chop off "... " and trailing newline
line = line[4:len(line) - 1]
lastSpace = line.rfind(" ")
if lastSpace == -1:
sys.stderr.write("trouble parsing line %s, skipping!\n" % line)
continue
operation = line[lastSpace + 1:]
path = line[:lastSpace]
if operation == "delete":
removed.append(path)
else:
changed.append(path)
return author, log, epoch, changed, removed
def p4cat(path):
return os.popen("p4 print -q \"%s\"" % path).read()
def stripRevision(path):
hashPos = path.rindex("#")
return path[:hashPos]
def getUserMap():
users = {}
output = os.popen("p4 users")
for line in output:
firstSpace = line.index(" ")
secondSpace = line.index(" ", firstSpace + 1)
key = line[:firstSpace]
email = line[firstSpace + 1:secondSpace]
openParenPos = line.index("(", secondSpace)
closedParenPos = line.index(")", openParenPos)
name = line[openParenPos + 1:closedParenPos]
users[key] = name + " " + email
return users
users = getUserMap()
output = os.popen("p4 changes %s...%s" % (prefix, changeRange)).readlines()
changes = []
for line in output:
changeNum = line.split(" ")[1]
changes.append(changeNum)
changes.reverse()
sys.stderr.write("\n")
cnt = 1
for change in changes:
[ author, log, epoch, changedFiles, removedFiles ] = describe(change)
sys.stderr.write("\rimporting revision %s (%s%%)" % (change, cnt * 100 / len(changes)))
cnt = cnt + 1
# sys.stderr.write("%s\n" % log)
# sys.stderr.write("%s\n" % changedFiles)
# sys.stderr.write("%s\n" % removedFiles)
print "commit refs/heads/master"
if author in users:
print "committer %s %s +0000" % (users[author], epoch)
else:
print "committer %s <a@b> %s +0000" % (author, epoch)
print "data <<EOT"
for l in log:
print l[:len(l) - 1]
print "EOT"
print ""
for f in changedFiles:
if not f.startswith(prefix):
sys.stderr.write("\nchanged files: ignoring path %s outside of %s in change %s\n" % (f, prefix, change))
continue
relpath = f[len(prefix):]
print "M 644 inline %s" % stripRevision(relpath)
data = p4cat(f)
print "data %s" % len(data)
sys.stdout.write(data)
print ""
for f in removedFiles:
if not f.startswith(prefix):
sys.stderr.write("\ndeleted files: ignoring path %s outside of %s in change %s\n" % (f, prefix, change))
continue
relpath = f[len(prefix):]
print "D %s" % stripRevision(relpath)
print ""
sys.stderr.write("\n")
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