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authorJohannes Schindelin <Johannes.Schindelin@gmx.de>2008-05-14 15:29:49 +0100
committerJunio C Hamano <gitster@pobox.com>2008-05-15 16:52:31 -0700
commitd775734c40afed216160437c59a45c93bdf28689 (patch)
tree9767b442e6052ca8a1981d9ef8d710c1adb2116e /git-cvsexportcommit.perl
parent57e0e3ebd6fac2bf5fe46fd946dae6129b07f474 (diff)
downloadgit-d775734c40afed216160437c59a45c93bdf28689.tar.gz
cvsexportcommit: introduce -W for shared working trees (between Git and CVS)
If you have a CVS checkout, it is easy to import the CVS history by calling "git cvsimport". However, interacting with the CVS repository using "git cvsexportcommit" was cumbersome, since that script assumes separate working directories for Git and CVS. Now, you can call cvsexportcommit with the -W option. This will automatically discover the GIT_DIR, and it will check out the parent commit before exporting the commit. The intended workflow is this: $ CVSROOT=$URL cvs co module $ cd module $ git cvsimport hack, hack, hack, making two commits, cleaning them up using rebase -i. $ git cvsexportcommit -W -c -p -u HEAD^ $ git cvsexportcommit -W -c -p -u HEAD Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'git-cvsexportcommit.perl')
-rwxr-xr-xgit-cvsexportcommit.perl35
1 files changed, 30 insertions, 5 deletions
diff --git a/git-cvsexportcommit.perl b/git-cvsexportcommit.perl
index 317a890271..eaa3218e79 100755
--- a/git-cvsexportcommit.perl
+++ b/git-cvsexportcommit.perl
@@ -7,15 +7,15 @@ use Data::Dumper;
use File::Basename qw(basename dirname);
use File::Spec;
-our ($opt_h, $opt_P, $opt_p, $opt_v, $opt_c, $opt_f, $opt_a, $opt_m, $opt_d, $opt_u, $opt_w);
+our ($opt_h, $opt_P, $opt_p, $opt_v, $opt_c, $opt_f, $opt_a, $opt_m, $opt_d, $opt_u, $opt_w, $opt_W);
-getopts('uhPpvcfam:d:w:');
+getopts('uhPpvcfam:d:w:W');
$opt_h && usage();
die "Need at least one commit identifier!" unless @ARGV;
-if ($opt_w) {
+if ($opt_w || $opt_W) {
# Remember where GIT_DIR is before changing to CVS checkout
unless ($ENV{GIT_DIR}) {
# No GIT_DIR set. Figure it out for ourselves
@@ -25,7 +25,9 @@ if ($opt_w) {
}
# Make sure GIT_DIR is absolute
$ENV{GIT_DIR} = File::Spec->rel2abs($ENV{GIT_DIR});
+}
+if ($opt_w) {
if (! -d $opt_w."/CVS" ) {
die "$opt_w is not a CVS checkout";
}
@@ -116,6 +118,15 @@ if ($parent) {
}
}
+my $go_back_to = 0;
+
+if ($opt_W) {
+ $opt_v && print "Resetting to $parent\n";
+ $go_back_to = `git symbolic-ref HEAD 2> /dev/null ||
+ git rev-parse HEAD` || die "Could not determine current branch";
+ system("git checkout -q $parent^0") && die "Could not check out $parent^0";
+}
+
$opt_v && print "Applying to CVS commit $commit from parent $parent\n";
# grab the commit message
@@ -260,7 +271,11 @@ if ($dirty) {
}
print "Applying\n";
-`GIT_DIR= git-apply $context --summary --numstat --apply <.cvsexportcommit.diff` || die "cannot patch";
+if ($opt_W) {
+ system("git checkout -q $commit^0") && die "cannot patch";
+} else {
+ `GIT_DIR= git-apply $context --summary --numstat --apply <.cvsexportcommit.diff` || die "cannot patch";
+}
print "Patch applied successfully. Adding new files and directories to CVS\n";
my $dirtypatch = 0;
@@ -313,7 +328,9 @@ if ($dirtypatch) {
print "using a patch program. After applying the patch and resolving the\n";
print "problems you may commit using:";
print "\n cd \"$opt_w\"" if $opt_w;
- print "\n $cmd\n\n";
+ print "\n $cmd\n";
+ print "\n git checkout $go_back_to\n" if $go_back_to;
+ print "\n";
exit(1);
}
@@ -333,6 +350,14 @@ if ($opt_c) {
# clean up
unlink(".cvsexportcommit.diff");
+if ($opt_W) {
+ system("git checkout $go_back_to") && die "cannot move back to $go_back_to";
+ if (!($go_back_to =~ /^[0-9a-fA-F]{40}$/)) {
+ system("git symbolic-ref HEAD $go_back_to") &&
+ die "cannot move back to $go_back_to";
+ }
+}
+
# CVS version 1.11.x and 1.12.x sleeps the wrong way to ensure the timestamp
# used by CVS and the one set by subsequence file modifications are different.
# If they are not different CVS will not detect changes.