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
This commit is contained in:
Junio C Hamano
@ -483,6 +483,11 @@ git-p4.skipUserNameCheck::
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user map, 'git p4' exits. This option can be used to force
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user map, 'git p4' exits. This option can be used to force
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submission regardless.
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submission regardless.
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git-p4.attemptRCSCleanup:
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If enabled, 'git p4 submit' will attempt to cleanup RCS keywords
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($Header$, etc). These would otherwise cause merge conflicts and prevent
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the submit going ahead. This option should be considered experimental at
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present.
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IMPLEMENTATION DETAILS
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IMPLEMENTATION DETAILS
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----------------------
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----------------------
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@ -10,7 +10,7 @@
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import optparse, sys, os, marshal, subprocess, shelve
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import optparse, sys, os, marshal, subprocess, shelve
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import tempfile, getopt, os.path, time, platform
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import tempfile, getopt, os.path, time, platform
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import re
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import re, shutil
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verbose = False
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verbose = False
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@ -186,6 +186,47 @@ def split_p4_type(p4type):
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mods = s[1]
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mods = s[1]
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return (base, mods)
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return (base, mods)
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#
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# return the raw p4 type of a file (text, text+ko, etc)
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#
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def p4_type(file):
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results = p4CmdList(["fstat", "-T", "headType", file])
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return results[0]['headType']
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#
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# Given a type base and modifier, return a regexp matching
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# the keywords that can be expanded in the file
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#
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def p4_keywords_regexp_for_type(base, type_mods):
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if base in ("text", "unicode", "binary"):
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kwords = None
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if "ko" in type_mods:
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kwords = 'Id|Header'
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elif "k" in type_mods:
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kwords = 'Id|Header|Author|Date|DateTime|Change|File|Revision'
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else:
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return None
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pattern = r"""
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\$ # Starts with a dollar, followed by...
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(%s) # one of the keywords, followed by...
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(:[^$]+)? # possibly an old expansion, followed by...
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\$ # another dollar
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""" % kwords
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return pattern
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else:
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return None
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#
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# Given a file, return a regexp matching the possible
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# RCS keywords that will be expanded, or None for files
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# with kw expansion turned off.
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#
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def p4_keywords_regexp_for_file(file):
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if not os.path.exists(file):
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return None
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else:
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(type_base, type_mods) = split_p4_type(p4_type(file))
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return p4_keywords_regexp_for_type(type_base, type_mods)
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def setP4ExecBit(file, mode):
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def setP4ExecBit(file, mode):
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# Reopens an already open file and changes the execute bit to match
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# Reopens an already open file and changes the execute bit to match
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@ -753,6 +794,29 @@ class P4Submit(Command, P4UserMap):
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return result
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return result
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def patchRCSKeywords(self, file, pattern):
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# Attempt to zap the RCS keywords in a p4 controlled file matching the given pattern
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(handle, outFileName) = tempfile.mkstemp(dir='.')
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try:
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outFile = os.fdopen(handle, "w+")
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inFile = open(file, "r")
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regexp = re.compile(pattern, re.VERBOSE)
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for line in inFile.readlines():
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line = regexp.sub(r'$\1$', line)
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outFile.write(line)
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inFile.close()
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outFile.close()
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# Forcibly overwrite the original file
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os.unlink(file)
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shutil.move(outFileName, file)
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except:
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# cleanup our temporary file
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os.unlink(outFileName)
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print "Failed to strip RCS keywords in %s" % file
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raise
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print "Patched up RCS keywords in %s" % file
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def p4UserForCommit(self,id):
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def p4UserForCommit(self,id):
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# Return the tuple (perforce user,git email) for a given git commit id
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# Return the tuple (perforce user,git email) for a given git commit id
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self.getUserMapFromPerforceServer()
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self.getUserMapFromPerforceServer()
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@ -918,6 +982,7 @@ class P4Submit(Command, P4UserMap):
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filesToDelete = set()
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filesToDelete = set()
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editedFiles = set()
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editedFiles = set()
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filesToChangeExecBit = {}
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filesToChangeExecBit = {}
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for line in diff:
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for line in diff:
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diff = parseDiffTreeEntry(line)
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diff = parseDiffTreeEntry(line)
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modifier = diff['status']
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modifier = diff['status']
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@ -964,9 +1029,45 @@ class P4Submit(Command, P4UserMap):
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patchcmd = diffcmd + " | git apply "
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patchcmd = diffcmd + " | git apply "
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tryPatchCmd = patchcmd + "--check -"
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tryPatchCmd = patchcmd + "--check -"
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applyPatchCmd = patchcmd + "--check --apply -"
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applyPatchCmd = patchcmd + "--check --apply -"
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patch_succeeded = True
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if os.system(tryPatchCmd) != 0:
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if os.system(tryPatchCmd) != 0:
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fixed_rcs_keywords = False
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patch_succeeded = False
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print "Unfortunately applying the change failed!"
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print "Unfortunately applying the change failed!"
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# Patch failed, maybe it's just RCS keyword woes. Look through
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# the patch to see if that's possible.
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if gitConfig("git-p4.attemptRCSCleanup","--bool") == "true":
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file = None
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pattern = None
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kwfiles = {}
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for file in editedFiles | filesToDelete:
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# did this file's delta contain RCS keywords?
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pattern = p4_keywords_regexp_for_file(file)
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if pattern:
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# this file is a possibility...look for RCS keywords.
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regexp = re.compile(pattern, re.VERBOSE)
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for line in read_pipe_lines(["git", "diff", "%s^..%s" % (id, id), file]):
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if regexp.search(line):
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if verbose:
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print "got keyword match on %s in %s in %s" % (pattern, line, file)
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kwfiles[file] = pattern
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break
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for file in kwfiles:
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if verbose:
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print "zapping %s with %s" % (line,pattern)
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self.patchRCSKeywords(file, kwfiles[file])
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fixed_rcs_keywords = True
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if fixed_rcs_keywords:
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print "Retrying the patch with RCS keywords cleaned up"
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if os.system(tryPatchCmd) == 0:
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patch_succeeded = True
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if not patch_succeeded:
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print "What do you want to do?"
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print "What do you want to do?"
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response = "x"
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response = "x"
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while response != "s" and response != "a" and response != "w":
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while response != "s" and response != "a" and response != "w":
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@ -1585,15 +1686,12 @@ class P4Sync(Command, P4UserMap):
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# Note that we do not try to de-mangle keywords on utf16 files,
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# Note that we do not try to de-mangle keywords on utf16 files,
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# even though in theory somebody may want that.
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# even though in theory somebody may want that.
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if type_base in ("text", "unicode", "binary"):
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pattern = p4_keywords_regexp_for_type(type_base, type_mods)
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if "ko" in type_mods:
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if pattern:
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text = ''.join(contents)
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regexp = re.compile(pattern, re.VERBOSE)
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text = re.sub(r'\$(Id|Header):[^$]*\$', r'$\1$', text)
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text = ''.join(contents)
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contents = [ text ]
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text = regexp.sub(r'$\1$', text)
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elif "k" in type_mods:
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contents = [ text ]
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text = ''.join(contents)
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text = re.sub(r'\$(Id|Header|Author|Date|DateTime|Change|File|Revision):[^$]*\$', r'$\1$', text)
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contents = [ text ]
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self.gitStream.write("M %s inline %s\n" % (git_mode, relPath))
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self.gitStream.write("M %s inline %s\n" % (git_mode, relPath))
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388
t/t9810-git-p4-rcs.sh
Executable file
388
t/t9810-git-p4-rcs.sh
Executable file
@ -0,0 +1,388 @@
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#!/bin/sh
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test_description='git-p4 rcs keywords'
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. ./lib-git-p4.sh
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test_expect_success 'start p4d' '
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start_p4d
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'
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#
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# Make one file with keyword lines at the top, and
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# enough plain text to be able to test modifications
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# far away from the keywords.
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#
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test_expect_success 'init depot' '
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(
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cd "$cli" &&
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cat <<-\EOF >filek &&
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$Id$
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/* $Revision$ */
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# $Change$
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line4
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line5
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line6
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line7
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line8
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EOF
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cp filek fileko &&
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sed -i "s/Revision/Revision: do not scrub me/" fileko
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cp fileko file_text &&
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sed -i "s/Id/Id: do not scrub me/" file_text
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p4 add -t text+k filek &&
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p4 submit -d "filek" &&
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p4 add -t text+ko fileko &&
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p4 submit -d "fileko" &&
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p4 add -t text file_text &&
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p4 submit -d "file_text"
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)
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'
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#
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# Generate these in a function to make it easy to use single quote marks.
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#
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write_scrub_scripts () {
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cat >"$TRASH_DIRECTORY/scrub_k.py" <<-\EOF &&
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import re, sys
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sys.stdout.write(re.sub(r'(?i)\$(Id|Header|Author|Date|DateTime|Change|File|Revision):[^$]*\$', r'$\1$', sys.stdin.read()))
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EOF
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cat >"$TRASH_DIRECTORY/scrub_ko.py" <<-\EOF
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import re, sys
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sys.stdout.write(re.sub(r'(?i)\$(Id|Header):[^$]*\$', r'$\1$', sys.stdin.read()))
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EOF
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}
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test_expect_success 'scrub scripts' '
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write_scrub_scripts
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'
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#
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# Compare $cli/file to its scrubbed version, should be different.
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# Compare scrubbed $cli/file to $git/file, should be same.
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#
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scrub_k_check () {
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file="$1" &&
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scrub="$TRASH_DIRECTORY/$file" &&
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"$PYTHON_PATH" "$TRASH_DIRECTORY/scrub_k.py" <"$git/$file" >"$scrub" &&
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! test_cmp "$cli/$file" "$scrub" &&
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test_cmp "$git/$file" "$scrub" &&
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rm "$scrub"
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}
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scrub_ko_check () {
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file="$1" &&
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scrub="$TRASH_DIRECTORY/$file" &&
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"$PYTHON_PATH" "$TRASH_DIRECTORY/scrub_ko.py" <"$git/$file" >"$scrub" &&
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! test_cmp "$cli/$file" "$scrub" &&
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test_cmp "$git/$file" "$scrub" &&
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rm "$scrub"
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}
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#
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# Modify far away from keywords. If no RCS lines show up
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# in the diff, there is no conflict.
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#
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test_expect_success 'edit far away from RCS lines' '
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test_when_finished cleanup_git &&
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"$GITP4" clone --dest="$git" //depot &&
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|
(
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cd "$git" &&
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git config git-p4.skipSubmitEdit true &&
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sed -i "s/^line7/line7 edit/" filek &&
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git commit -m "filek line7 edit" filek &&
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"$GITP4" submit &&
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scrub_k_check filek
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)
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'
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#
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# Modify near the keywords. This will require RCS scrubbing.
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#
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test_expect_success 'edit near RCS lines' '
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test_when_finished cleanup_git &&
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"$GITP4" clone --dest="$git" //depot &&
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|
(
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|
cd "$git" &&
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git config git-p4.skipSubmitEdit true &&
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git config git-p4.attemptRCSCleanup true &&
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sed -i "s/^line4/line4 edit/" filek &&
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git commit -m "filek line4 edit" filek &&
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"$GITP4" submit &&
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scrub_k_check filek
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)
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|
'
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|
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|
#
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# Modify the keywords themselves. This also will require RCS scrubbing.
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|
#
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|
test_expect_success 'edit keyword lines' '
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|
test_when_finished cleanup_git &&
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|
"$GITP4" clone --dest="$git" //depot &&
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|
(
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|
cd "$git" &&
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|
git config git-p4.skipSubmitEdit true &&
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|
git config git-p4.attemptRCSCleanup true &&
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|
sed -i "/Revision/d" filek &&
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|
git commit -m "filek remove Revision line" filek &&
|
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|
"$GITP4" submit &&
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|
scrub_k_check filek
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|
)
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|
'
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|
|
||||||
|
#
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||||||
|
# Scrubbing text+ko files should not alter all keywords, just Id, Header.
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||||||
|
#
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||||||
|
test_expect_success 'scrub ko files differently' '
|
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|
test_when_finished cleanup_git &&
|
||||||
|
"$GITP4" clone --dest="$git" //depot &&
|
||||||
|
(
|
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|
cd "$git" &&
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|
git config git-p4.skipSubmitEdit true &&
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|
git config git-p4.attemptRCSCleanup true &&
|
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|
sed -i "s/^line4/line4 edit/" fileko &&
|
||||||
|
git commit -m "fileko line4 edit" fileko &&
|
||||||
|
"$GITP4" submit &&
|
||||||
|
scrub_ko_check fileko &&
|
||||||
|
! scrub_k_check fileko
|
||||||
|
)
|
||||||
|
'
|
||||||
|
|
||||||
|
# hack; git-p4 submit should do it on its own
|
||||||
|
test_expect_success 'cleanup after failure' '
|
||||||
|
(
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||||||
|
cd "$cli" &&
|
||||||
|
p4 revert ...
|
||||||
|
)
|
||||||
|
'
|
||||||
|
|
||||||
|
#
|
||||||
|
# Do not scrub anything but +k or +ko files. Sneak a change into
|
||||||
|
# the cli file so that submit will get a conflict. Make sure that
|
||||||
|
# scrubbing doesn't make a mess of things.
|
||||||
|
#
|
||||||
|
# Assumes that git-p4 exits leaving the p4 file open, with the
|
||||||
|
# conflict-generating patch unapplied.
|
||||||
|
#
|
||||||
|
# This might happen only if the git repo is behind the p4 repo at
|
||||||
|
# submit time, and there is a conflict.
|
||||||
|
#
|
||||||
|
test_expect_success 'do not scrub plain text' '
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||||||
|
test_when_finished cleanup_git &&
|
||||||
|
"$GITP4" clone --dest="$git" //depot &&
|
||||||
|
(
|
||||||
|
cd "$git" &&
|
||||||
|
git config git-p4.skipSubmitEdit true &&
|
||||||
|
git config git-p4.attemptRCSCleanup true &&
|
||||||
|
sed -i "s/^line4/line4 edit/" file_text &&
|
||||||
|
git commit -m "file_text line4 edit" file_text &&
|
||||||
|
(
|
||||||
|
cd "$cli" &&
|
||||||
|
p4 open file_text &&
|
||||||
|
sed -i "s/^line5/line5 p4 edit/" file_text &&
|
||||||
|
p4 submit -d "file5 p4 edit"
|
||||||
|
) &&
|
||||||
|
! "$GITP4" submit &&
|
||||||
|
(
|
||||||
|
# exepct something like:
|
||||||
|
# file_text - file(s) not opened on this client
|
||||||
|
# but not copious diff output
|
||||||
|
cd "$cli" &&
|
||||||
|
p4 diff file_text >wc &&
|
||||||
|
test_line_count = 1 wc
|
||||||
|
)
|
||||||
|
)
|
||||||
|
'
|
||||||
|
|
||||||
|
# hack; git-p4 submit should do it on its own
|
||||||
|
test_expect_success 'cleanup after failure 2' '
|
||||||
|
(
|
||||||
|
cd "$cli" &&
|
||||||
|
p4 revert ...
|
||||||
|
)
|
||||||
|
'
|
||||||
|
|
||||||
|
create_kw_file () {
|
||||||
|
cat <<\EOF >"$1"
|
||||||
|
/* A file
|
||||||
|
Id: $Id$
|
||||||
|
Revision: $Revision$
|
||||||
|
File: $File$
|
||||||
|
*/
|
||||||
|
int main(int argc, const char **argv) {
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
EOF
|
||||||
|
}
|
||||||
|
|
||||||
|
test_expect_success 'add kwfile' '
|
||||||
|
(
|
||||||
|
cd "$cli" &&
|
||||||
|
echo file1 >file1 &&
|
||||||
|
p4 add file1 &&
|
||||||
|
p4 submit -d "file 1" &&
|
||||||
|
create_kw_file kwfile1.c &&
|
||||||
|
p4 add kwfile1.c &&
|
||||||
|
p4 submit -d "Add rcw kw file" kwfile1.c
|
||||||
|
)
|
||||||
|
'
|
||||||
|
|
||||||
|
p4_append_to_file () {
|
||||||
|
f="$1" &&
|
||||||
|
p4 edit -t ktext "$f" &&
|
||||||
|
echo "/* $(date) */" >>"$f" &&
|
||||||
|
p4 submit -d "appending a line in p4"
|
||||||
|
}
|
||||||
|
|
||||||
|
# Create some files with RCS keywords. If they get modified
|
||||||
|
# elsewhere then the version number gets bumped which then
|
||||||
|
# results in a merge conflict if we touch the RCS kw lines,
|
||||||
|
# even though the change itself would otherwise apply cleanly.
|
||||||
|
test_expect_success 'cope with rcs keyword expansion damage' '
|
||||||
|
test_when_finished cleanup_git &&
|
||||||
|
"$GITP4" clone --dest="$git" //depot &&
|
||||||
|
(
|
||||||
|
cd "$git" &&
|
||||||
|
git config git-p4.skipSubmitEdit true &&
|
||||||
|
git config git-p4.attemptRCSCleanup true &&
|
||||||
|
(cd ../cli && p4_append_to_file kwfile1.c) &&
|
||||||
|
old_lines=$(wc -l <kwfile1.c) &&
|
||||||
|
perl -n -i -e "print unless m/Revision:/" kwfile1.c &&
|
||||||
|
new_lines=$(wc -l <kwfile1.c) &&
|
||||||
|
test $new_lines = $(($old_lines - 1)) &&
|
||||||
|
|
||||||
|
git add kwfile1.c &&
|
||||||
|
git commit -m "Zap an RCS kw line" &&
|
||||||
|
"$GITP4" submit &&
|
||||||
|
"$GITP4" rebase &&
|
||||||
|
git diff p4/master &&
|
||||||
|
"$GITP4" commit &&
|
||||||
|
echo "try modifying in both" &&
|
||||||
|
cd "$cli" &&
|
||||||
|
p4 edit kwfile1.c &&
|
||||||
|
echo "line from p4" >>kwfile1.c &&
|
||||||
|
p4 submit -d "add a line in p4" kwfile1.c &&
|
||||||
|
cd "$git" &&
|
||||||
|
echo "line from git at the top" | cat - kwfile1.c >kwfile1.c.new &&
|
||||||
|
mv kwfile1.c.new kwfile1.c &&
|
||||||
|
git commit -m "Add line in git at the top" kwfile1.c &&
|
||||||
|
"$GITP4" rebase &&
|
||||||
|
"$GITP4" submit
|
||||||
|
)
|
||||||
|
'
|
||||||
|
|
||||||
|
test_expect_success 'cope with rcs keyword file deletion' '
|
||||||
|
test_when_finished cleanup_git &&
|
||||||
|
(
|
||||||
|
cd "$cli" &&
|
||||||
|
echo "\$Revision\$" >kwdelfile.c &&
|
||||||
|
p4 add -t ktext kwdelfile.c &&
|
||||||
|
p4 submit -d "Add file to be deleted" &&
|
||||||
|
cat kwdelfile.c &&
|
||||||
|
grep 1 kwdelfile.c
|
||||||
|
) &&
|
||||||
|
"$GITP4" clone --dest="$git" //depot &&
|
||||||
|
(
|
||||||
|
cd "$git" &&
|
||||||
|
grep Revision kwdelfile.c &&
|
||||||
|
git rm -f kwdelfile.c &&
|
||||||
|
git commit -m "Delete a file containing RCS keywords" &&
|
||||||
|
git config git-p4.skipSubmitEdit true &&
|
||||||
|
git config git-p4.attemptRCSCleanup true &&
|
||||||
|
"$GITP4" submit
|
||||||
|
) &&
|
||||||
|
(
|
||||||
|
cd "$cli" &&
|
||||||
|
p4 sync &&
|
||||||
|
! test -f kwdelfile.c
|
||||||
|
)
|
||||||
|
'
|
||||||
|
|
||||||
|
# If you add keywords in git of the form $Header$ then everything should
|
||||||
|
# work fine without any special handling.
|
||||||
|
test_expect_success 'Add keywords in git which match the default p4 values' '
|
||||||
|
test_when_finished cleanup_git &&
|
||||||
|
"$GITP4" clone --dest="$git" //depot &&
|
||||||
|
(
|
||||||
|
cd "$git" &&
|
||||||
|
echo "NewKW: \$Revision\$" >>kwfile1.c &&
|
||||||
|
git add kwfile1.c &&
|
||||||
|
git commit -m "Adding RCS keywords in git" &&
|
||||||
|
git config git-p4.skipSubmitEdit true &&
|
||||||
|
git config git-p4.attemptRCSCleanup true &&
|
||||||
|
"$GITP4" submit
|
||||||
|
) &&
|
||||||
|
(
|
||||||
|
cd "$cli" &&
|
||||||
|
p4 sync &&
|
||||||
|
test -f kwfile1.c &&
|
||||||
|
grep "NewKW.*Revision.*[0-9]" kwfile1.c
|
||||||
|
|
||||||
|
)
|
||||||
|
'
|
||||||
|
|
||||||
|
# If you add keywords in git of the form $Header:#1$ then things will fail
|
||||||
|
# unless git-p4 takes steps to scrub the *git* commit.
|
||||||
|
#
|
||||||
|
test_expect_failure 'Add keywords in git which do not match the default p4 values' '
|
||||||
|
test_when_finished cleanup_git &&
|
||||||
|
"$GITP4" clone --dest="$git" //depot &&
|
||||||
|
(
|
||||||
|
cd "$git" &&
|
||||||
|
echo "NewKW2: \$Revision:1\$" >>kwfile1.c &&
|
||||||
|
git add kwfile1.c &&
|
||||||
|
git commit -m "Adding RCS keywords in git" &&
|
||||||
|
git config git-p4.skipSubmitEdit true &&
|
||||||
|
git config git-p4.attemptRCSCleanup true &&
|
||||||
|
"$GITP4" submit
|
||||||
|
) &&
|
||||||
|
(
|
||||||
|
cd "$cli" &&
|
||||||
|
p4 sync &&
|
||||||
|
grep "NewKW2.*Revision.*[0-9]" kwfile1.c
|
||||||
|
|
||||||
|
)
|
||||||
|
'
|
||||||
|
|
||||||
|
# Check that the existing merge conflict handling still works.
|
||||||
|
# Modify kwfile1.c in git, and delete in p4. We should be able
|
||||||
|
# to skip the git commit.
|
||||||
|
#
|
||||||
|
test_expect_success 'merge conflict handling still works' '
|
||||||
|
test_when_finished cleanup_git &&
|
||||||
|
(
|
||||||
|
cd "$cli" &&
|
||||||
|
echo "Hello:\$Id\$" >merge2.c &&
|
||||||
|
echo "World" >>merge2.c &&
|
||||||
|
p4 add -t ktext merge2.c &&
|
||||||
|
p4 submit -d "add merge test file"
|
||||||
|
) &&
|
||||||
|
"$GITP4" clone --dest="$git" //depot &&
|
||||||
|
(
|
||||||
|
cd "$git" &&
|
||||||
|
sed -e "/Hello/d" merge2.c >merge2.c.tmp &&
|
||||||
|
mv merge2.c.tmp merge2.c &&
|
||||||
|
git add merge2.c &&
|
||||||
|
git commit -m "Modifying merge2.c"
|
||||||
|
) &&
|
||||||
|
(
|
||||||
|
cd "$cli" &&
|
||||||
|
p4 delete merge2.c &&
|
||||||
|
p4 submit -d "remove merge test file"
|
||||||
|
) &&
|
||||||
|
(
|
||||||
|
cd "$git" &&
|
||||||
|
test -f merge2.c &&
|
||||||
|
git config git-p4.skipSubmitEdit true &&
|
||||||
|
git config git-p4.attemptRCSCleanup true &&
|
||||||
|
!(echo "s" | "$GITP4" submit) &&
|
||||||
|
git rebase --skip &&
|
||||||
|
! test -f merge2.c
|
||||||
|
)
|
||||||
|
'
|
||||||
|
|
||||||
|
|
||||||
|
test_expect_success 'kill p4d' '
|
||||||
|
kill_p4d
|
||||||
|
'
|
||||||
|
|
||||||
|
test_done
|
||||||
Reference in New Issue
Block a user