Use symbolic name SHORT_NAME_AMBIGUOUS as error return value

[thirdparty/git.git] / git-cvsimport.perl

diff --git a/git-cvsimport.perl b/git-cvsimport.perl
index bbb83fb71cab2d177e98a1c648974bb2bca4607a..fc207fc47e2860f9d8b1ed4154596b6e8d897a11 100755 (executable)
--- a/git-cvsimport.perl
+++ b/git-cvsimport.perl
@@ -29,19 +29,63 @@ use IPC::Open2;
 $SIG{'PIPE'}="IGNORE";
 $ENV{'TZ'}="UTC";
 
-our($opt_h,$opt_o,$opt_v,$opt_k,$opt_u,$opt_d,$opt_p,$opt_C,$opt_z,$opt_i,$opt_s,$opt_m,$opt_M);
+our($opt_h,$opt_o,$opt_v,$opt_k,$opt_u,$opt_d,$opt_p,$opt_C,$opt_z,$opt_i,$opt_P, $opt_s,$opt_m,$opt_M,$opt_A);
+my (%conv_author_name, %conv_author_email);
 
 sub usage() {
        print STDERR <<END;
 Usage: ${\basename $0}     # fetch/update GIT from CVS
-       [-o branch-for-HEAD] [-h] [-v] [-d CVSROOT]
-       [-p opts-for-cvsps] [-C GIT_repository] [-z fuzz]
-       [-i] [-k] [-u] [-s subst] [-m] [-M regex] [CVS_module]
+       [-o branch-for-HEAD] [-h] [-v] [-d CVSROOT] [-A author-conv-file]
+       [-p opts-for-cvsps] [-C GIT_repository] [-z fuzz] [-i] [-k] [-u]
+       [-s subst] [-m] [-M regex] [CVS_module]
 END
        exit(1);
 }
 
-getopts("hivmkuo:d:p:C:z:s:M:") or usage();
+sub read_author_info($) {
+       my ($file) = @_;
+       my $user;
+       open my $f, '<', "$file" or die("Failed to open $file: $!\n");
+
+       while (<$f>) {
+               # Expected format is this:
+               #   exon=Andreas Ericsson <ae@op5.se>
+               if (m/^(\S+?)\s*=\s*(.+?)\s*<(.+)>\s*$/) {
+                       $user = $1;
+                       $conv_author_name{$user} = $2;
+                       $conv_author_email{$user} = $3;
+               }
+               # However, we also read from CVSROOT/users format
+               # to ease migration.
+               elsif (/^(\w+):(['"]?)(.+?)\2\s*$/) {
+                       my $mapped;
+                       ($user, $mapped) = ($1, $3);
+                       if ($mapped =~ /^\s*(.*?)\s*<(.*)>\s*$/) {
+                               $conv_author_name{$user} = $1;
+                               $conv_author_email{$user} = $2;
+                       }
+                       elsif ($mapped =~ /^<?(.*)>?$/) {
+                               $conv_author_name{$user} = $user;
+                               $conv_author_email{$user} = $1;
+                       }
+               }
+               # NEEDSWORK: Maybe warn on unrecognized lines?
+       }
+       close ($f);
+}
+
+sub write_author_info($) {
+       my ($file) = @_;
+       open my $f, '>', $file or
+         die("Failed to open $file for writing: $!");
+
+       foreach (keys %conv_author_name) {
+               print $f "$_=$conv_author_name{$_} <$conv_author_email{$_}>\n";
+       }
+       close ($f);
+}
+
+getopts("hivmkuo:d:p:C:z:s:M:P:A:") or usage();
 usage if $opt_h;
 
 @ARGV <= 1 or usage();
@@ -337,6 +381,10 @@ sub file {
        }
        close ($fh);
 
+       if ($res eq '') {
+           die "Looks like the server has gone away while fetching $fn $rev -- exiting!";
+       }
+
        return ($name, $res);
 }
 
@@ -433,7 +481,11 @@ unless(-d $git_dir) {
                       "Either use the correct '-o branch' option,\n".
                       "or import to a new repository.\n";
 
-       $last_branch = basename(readlink("$git_dir/HEAD"));
+       open(F, "git-symbolic-ref HEAD |") or
+               die "Cannot run git-symbolic-ref: $!\n";
+       chomp ($last_branch = <F>);
+       $last_branch = basename($last_branch);
+       close(F);
        unless($last_branch) {
                warn "Cannot read the last branch name: $! -- assuming 'master'\n";
                $last_branch = "master";
@@ -445,7 +497,7 @@ CVS2GIT_HEAD exists.
 Make sure your working directory corresponds to HEAD and remove CVS2GIT_HEAD.
 You may need to run
 
-    git-read-tree -m -u CVS2GIT_HEAD HEAD
+    git read-tree -m -u CVS2GIT_HEAD HEAD
 EOM
        }
        system('cp', "$git_dir/HEAD", "$git_dir/CVS2GIT_HEAD");
@@ -481,17 +533,30 @@ EOM
 -d $git_dir
        or die "Could not create git subdir ($git_dir).\n";
 
+# now we read (and possibly save) author-info as well
+-f "$git_dir/cvs-authors" and
+  read_author_info("$git_dir/cvs-authors");
+if ($opt_A) {
+       read_author_info($opt_A);
+       write_author_info("$git_dir/cvs-authors");
+}
+
 my $pid = open(CVS,"-|");
 die "Cannot fork: $!\n" unless defined $pid;
 unless($pid) {
        my @opt;
        @opt = split(/,/,$opt_p) if defined $opt_p;
        unshift @opt, '-z', $opt_z if defined $opt_z;
+       unshift @opt, '-q'         unless defined $opt_v;
        unless (defined($opt_p) && $opt_p =~ m/--no-cvs-direct/) {
                push @opt, '--cvs-direct';
        }
-       exec("cvsps",@opt,"-u","-A",'--root',$opt_d,$cvs_tree);
-       die "Could not start cvsps: $!\n";
+       if ($opt_P) {
+           exec("cat", $opt_P);
+       } else {
+           exec("cvsps","--norc",@opt,"-u","-A",'--root',$opt_d,$cvs_tree);
+           die "Could not start cvsps: $!\n";
+       }
 }
 
 
@@ -636,6 +701,7 @@ my $commit = sub {
                my($xtag) = $tag;
                $xtag =~ s/\s+\*\*.*$//; # Remove stuff like ** INVALID ** and ** FUNKY **
                $xtag =~ tr/_/\./ if ( $opt_u );
+               $xtag =~ s/[\/]/$opt_s/g;
                
                my $pid = open2($in, $out, 'git-mktag');
                print $out "object $cid\n".
@@ -688,6 +754,9 @@ while(<CVS>) {
                s/\s+$//;
                if (/^(.*?)\s+<(.*)>/) {
                    ($author_name, $author_email) = ($1, $2);
+               } elsif ($conv_author_name{$_}) {
+                       $author_name = $conv_author_name{$_};
+                       $author_email = $conv_author_email{$_};
                } else {
                    $author_name = $author_email = $_;
                }
@@ -820,8 +889,7 @@ if($orig_branch) {
        print "DONE; creating $orig_branch branch\n" if $opt_v;
        system("cp","$git_dir/refs/heads/$opt_o","$git_dir/refs/heads/master")
                unless -f "$git_dir/refs/heads/master";
-       unlink("$git_dir/HEAD");
-       symlink("refs/heads/$orig_branch","$git_dir/HEAD");
+       system('git-update-ref', 'HEAD', "$orig_branch");
        unless ($opt_i) {
                system('git checkout');
                die "checkout failed: $?\n" if $?;