sub usage() {
print <<EOT;
-$0 [-f] [-n] <source> <dest>
-$0 [-f] [-k] [-n] <source> ... <dest directory>
-
-In the first form, source must exist and be either a file,
-symlink or directory, dest must not exist. It renames source to dest.
-In the second form, the last argument has to be an existing
-directory; the given sources will be moved into this directory.
-
-Updates the git cache to reflect the change.
-Use "git commit" to make the change permanently.
-
-Options:
- -f Force renaming/moving, even if target exists
- -k Continue on error by skipping
- not-existing or not revision-controlled source
- -n Do nothing; show what would happen
+$0 [-f] [-n] <source> <destination>
+$0 [-f] [-n] [-k] <source> ... <destination directory>
EOT
exit(1);
}
-# Sanity checks:
-my $GIT_DIR = $ENV{'GIT_DIR'} || ".git";
-
-unless ( -d $GIT_DIR && -d $GIT_DIR . "/objects" &&
- -d $GIT_DIR . "/objects/" && -d $GIT_DIR . "/refs") {
- print "Git repository not found.";
- usage();
-}
-
-
our ($opt_n, $opt_f, $opt_h, $opt_k, $opt_v);
getopts("hnfkv") || usage;
usage() if $opt_h;
@ARGV >= 1 or usage;
+my $GIT_DIR = `git rev-parse --git-dir`;
+exit 1 if $?; # rev-parse would have given "not a git dir" message.
+chomp($GIT_DIR);
+
my (@srcArgs, @dstArgs, @srcs, @dsts);
my ($src, $dst, $base, $dstDir);
+# remove any trailing slash in arguments
+for (@ARGV) { s/\/*$//; }
+
my $argCount = scalar @ARGV;
if (-d $ARGV[$argCount-1]) {
$dstDir = $ARGV[$argCount-1];
@srcArgs = @ARGV[0..$argCount-2];
-
+
foreach $src (@srcArgs) {
$base = $src;
$base =~ s/^.*\///;
}
}
else {
- if ($argCount != 2) {
+ if ($argCount < 2) {
+ print "Error: need at least two arguments\n";
+ exit(1);
+ }
+ if ($argCount > 2) {
print "Error: moving to directory '"
. $ARGV[$argCount-1]
- . "' not possible; not exisiting\n";
- usage;
+ . "' not possible; not existing\n";
+ exit(1);
}
@srcArgs = ($ARGV[0]);
@dstArgs = ($ARGV[1]);
$dstDir = "";
}
+my $subdir_prefix = `git rev-parse --show-prefix`;
+chomp($subdir_prefix);
+
+# run in git base directory, so that git-ls-files lists all revisioned files
+chdir "$GIT_DIR/..";
+
+# normalize paths, needed to compare against versioned files and update-index
+# also, this is nicer to end-users by doing ".//a/./b/.//./c" ==> "a/b/c"
+for (@srcArgs, @dstArgs) {
+ # prepend git prefix as we run from base directory
+ $_ = $subdir_prefix.$_;
+ s|^\./||;
+ s|/\./|/| while (m|/\./|);
+ s|//+|/|g;
+ # Also "a/b/../c" ==> "a/c"
+ 1 while (s,(^|/)[^/]+/\.\./,$1,);
+}
+
my (@allfiles,@srcfiles,@dstfiles);
my $safesrc;
my (%overwritten, %srcForDst);
$/ = "\0";
-open(F,"-|","git-ls-files","-z")
+open(F, 'git-ls-files -z |')
or die "Failed to open pipe from git-ls-files: " . $!;
@allfiles = map { chomp; $_; } <F>;
$dst = shift @dstArgs;
$bad = "";
+ for ($src, $dst) {
+ # Be nicer to end-users by doing ".//a/./b/.//./c" ==> "a/b/c"
+ s|^\./||;
+ s|/\./|/| while (m|/\./|);
+ s|//+|/|g;
+ # Also "a/b/../c" ==> "a/c"
+ 1 while (s,(^|/)[^/]+/\.\./,$1,);
+ }
+
if ($opt_v) {
print "Checking rename of '$src' to '$dst'\n";
}
$bad = "bad source '$src'";
}
+ $safesrc = quotemeta($src);
+ @srcfiles = grep /^$safesrc(\/|$)/, @allfiles;
+
$overwritten{$dst} = 0;
if (($bad eq "") && -e $dst) {
$bad = "destination '$dst' already exists";
- if (-f $dst && $opt_f) {
- print "Warning: $bad; will overwrite!\n";
- $bad = "";
- $overwritten{$dst} = 1;
+ if ($opt_f) {
+ # only files can overwrite each other: check both source and destination
+ if (-f $dst && (scalar @srcfiles == 1)) {
+ print "Warning: $bad; will overwrite!\n";
+ $bad = "";
+ $overwritten{$dst} = 1;
+ }
+ else {
+ $bad = "Can not overwrite '$src' with '$dst'";
+ }
}
}
- if (($bad eq "") && ($src eq $dstDir)) {
+ if (($bad eq "") && ($dst =~ /^$safesrc\//)) {
$bad = "can not move directory '$src' into itself";
}
if ($bad eq "") {
- $safesrc = quotemeta($src);
- @srcfiles = grep /^$safesrc(\/|$)/, @allfiles;
if (scalar @srcfiles == 0) {
$bad = "'$src' not under version control";
}
next;
}
print "Error: $bad\n";
- usage();
+ exit(1);
}
push @srcs, $src;
push @dsts, $dst;
# Final pass: rename/move
my (@deletedfiles,@addedfiles,@changedfiles);
+$bad = "";
while(scalar @srcs > 0) {
$src = shift @srcs;
$dst = shift @dsts;
if ($opt_n || $opt_v) { print "Renaming $src to $dst\n"; }
if (!$opt_n) {
- rename($src,$dst)
- or die "rename failed: $!";
+ if (!rename($src,$dst)) {
+ $bad = "renaming '$src' failed: $!";
+ if ($opt_k) {
+ print "Warning: skipped: $bad\n";
+ $bad = "";
+ next;
+ }
+ last;
+ }
}
$safesrc = quotemeta($src);
push @deletedfiles, @srcfiles;
if (scalar @srcfiles == 1) {
+ # $dst can be a directory with 1 file inside
if ($overwritten{$dst} ==1) {
- push @changedfiles, $dst;
+ push @changedfiles, $dstfiles[0];
+
} else {
- push @addedfiles, $dst;
+ push @addedfiles, $dstfiles[0];
}
}
else {
}
if ($opt_n) {
+ if (@changedfiles) {
print "Changed : ". join(", ", @changedfiles) ."\n";
+ }
+ if (@addedfiles) {
print "Adding : ". join(", ", @addedfiles) ."\n";
+ }
+ if (@deletedfiles) {
print "Deleting : ". join(", ", @deletedfiles) ."\n";
- exit(1);
+ }
}
-
-my $rc;
-if (scalar @changedfiles >0) {
- $rc = system("git-update-index","--",@changedfiles);
- die "git-update-index failed to update changed files with code $?\n" if $rc;
+else {
+ if (@changedfiles) {
+ open(H, "| git-update-index -z --stdin")
+ or die "git-update-index failed to update changed files with code $!\n";
+ foreach my $fileName (@changedfiles) {
+ print H "$fileName\0";
+ }
+ close(H);
+ }
+ if (@addedfiles) {
+ open(H, "| git-update-index --add -z --stdin")
+ or die "git-update-index failed to add new names with code $!\n";
+ foreach my $fileName (@addedfiles) {
+ print H "$fileName\0";
+ }
+ close(H);
+ }
+ if (@deletedfiles) {
+ open(H, "| git-update-index --remove -z --stdin")
+ or die "git-update-index failed to remove old names with code $!\n";
+ foreach my $fileName (@deletedfiles) {
+ print H "$fileName\0";
+ }
+ close(H);
+ }
}
-if (scalar @addedfiles >0) {
- $rc = system("git-update-index","--add","--",@addedfiles);
- die "git-update-index failed to add new names with code $?\n" if $rc;
+
+if ($bad ne "") {
+ print "Error: $bad\n";
+ exit(1);
}
-$rc = system("git-update-index","--remove","--",@deletedfiles);
-die "git-update-index failed to remove old names with code $?\n" if $rc;