Merge branch 'jc/diff'

[git.git] / git-cvsimport.perl

diff --git a/git-cvsimport.perl b/git-cvsimport.perl
index 76f6246a31b86dd54ca0556f76a8511d73be8ec7..50f5d9642a17eef42d9a28e36201a808e655f54f 100755 (executable)
--- a/git-cvsimport.perl
+++ b/git-cvsimport.perl
@@ -17,7 +17,7 @@ use strict;
 use warnings;
 use Getopt::Std;
 use File::Spec;
-use File::Temp qw(tempfile);
+use File::Temp qw(tempfile tmpnam);
 use File::Path qw(mkpath);
 use File::Basename qw(basename dirname);
 use Time::Local;
@@ -465,10 +465,14 @@ $git_dir = getwd()."/".$git_dir unless $git_dir =~ m#^/#;
 $ENV{"GIT_DIR"} = $git_dir;
 my $orig_git_index;
 $orig_git_index = $ENV{GIT_INDEX_FILE} if exists $ENV{GIT_INDEX_FILE};
-my ($git_ih, $git_index) = tempfile('gitXXXXXX', SUFFIX => '.idx',
-                                   DIR => File::Spec->tmpdir());
-close ($git_ih);
-$ENV{GIT_INDEX_FILE} = $git_index;
+
+my %index; # holds filenames of one index per branch
+$index{$opt_o} = tmpnam();
+
+$ENV{GIT_INDEX_FILE} = $index{$opt_o};
+system("git-read-tree", $opt_o);
+die "read-tree failed: $?\n" if $?;
+
 unless(-d $git_dir) {
        system("git-init-db");
        die "Cannot init the GIT db at $git_tree: $?\n" if $?;
@@ -496,6 +500,10 @@ unless(-d $git_dir) {
        $tip_at_start = `git-rev-parse --verify HEAD`;
 
        # populate index
+       unless ($index{$last_branch}) {
+           $index{$last_branch} = tmpnam();
+       }
+       $ENV{GIT_INDEX_FILE} = $index{$last_branch};
        system('git-read-tree', $last_branch);
        die "read-tree failed: $?\n" if $?;
 
@@ -529,25 +537,39 @@ if ($opt_A) {
        write_author_info("$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';
+
+#
+# run cvsps into a file unless we are getting
+# it passed as a file via $opt_P
+#
+unless ($opt_P) {
+       print "Running cvsps...\n" if $opt_v;
+       my $pid = open(CVSPS,"-|");
+       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) && $opt_p =~ m/--no-cvs-direct/) {
+                       push @opt, '--cvs-direct';
+               }
+               exec("cvsps","--norc",@opt,"-u","-A",'--root',$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: $!\n";
+       my ($cvspsfh, $cvspsfile) = tempfile('gitXXXXXX', SUFFIX => '.cvsps',
+                                            DIR => File::Spec->tmpdir());
+       while (<CVSPS>) {
+           print $cvspsfh $_;
        }
+       close CVSPS;
+       close $cvspsfh;
+       $opt_P = $cvspsfile;
 }
 
 
+open(CVS, "<$opt_P") or die $!;
+
 ## cvsps output:
 #---------------------
 #PatchSet 314
@@ -595,7 +617,11 @@ sub write_tree () {
 }
 
 my($patchset,$date,$author_name,$author_email,$branch,$ancestor,$tag,$logmsg);
-my(@old,@new,@skipped);
+my(@old,@new,@skipped,%ignorebranch);
+
+# commits that cvsps cannot place anywhere...
+$ignorebranch{'#CVSPS_NO_BRANCH'} = 1;
+
 sub commit {
        update_index(@old, @new);
        @old = @new = ();
@@ -751,7 +777,16 @@ while(<CVS>) {
                        $state = 11;
                        next;
                }
+               if (exists $ignorebranch{$branch}) {
+                       print STDERR "Skipping $branch\n";
+                       $state = 11;
+                       next;
+               }
                if($ancestor) {
+                       if($ancestor eq $branch) {
+                               print STDERR "Branch $branch erroneously stems from itself -- changed ancestor to $opt_o\n";
+                               $ancestor = $opt_o;
+                       }
                        if(-f "$git_dir/refs/heads/$branch") {
                                print STDERR "Branch $branch already exists!\n";
                                $state=11;
@@ -759,6 +794,7 @@ while(<CVS>) {
                        }
                        unless(open(H,"$git_dir/refs/heads/$ancestor")) {
                                print STDERR "Branch $ancestor does not exist!\n";
+                               $ignorebranch{$branch} = 1;
                                $state=11;
                                next;
                        }
@@ -766,6 +802,7 @@ while(<CVS>) {
                        close(H);
                        unless(open(H,"> $git_dir/refs/heads/$branch")) {
                                print STDERR "Could not create branch $branch: $!\n";
+                               $ignorebranch{$branch} = 1;
                                $state=11;
                                next;
                        }
@@ -776,8 +813,27 @@ while(<CVS>) {
                }
                if(($ancestor || $branch) ne $last_branch) {
                        print "Switching from $last_branch to $branch\n" if $opt_v;
-                       system("git-read-tree", $branch);
-                       die "read-tree failed: $?\n" if $?;
+                       unless ($index{$branch}) {
+                           $index{$branch} = tmpnam();
+                           $ENV{GIT_INDEX_FILE} = $index{$branch};
+                           system("git-read-tree", $branch);
+                           die "read-tree failed: $?\n" if $?;
+                       }
+                       # just in case
+                       $ENV{GIT_INDEX_FILE} = $index{$branch};
+                       if ($ancestor) {
+                           print "have ancestor $ancestor" if $opt_v;
+                           system("git-read-tree", $ancestor);
+                           die "read-tree failed: $?\n" if $?;
+                       }
+               } else {
+                       # just in case
+                       unless ($index{$branch}) {
+                           $index{$branch} = tmpnam();
+                           $ENV{GIT_INDEX_FILE} = $index{$branch};
+                           system("git-read-tree", $branch);
+                           die "read-tree failed: $?\n" if $?;
+                       }
                }
                $last_branch = $branch if $branch ne $last_branch;
                $state = 9;
@@ -841,7 +897,9 @@ while(<CVS>) {
 }
 commit() if $branch and $state != 11;
 
-unlink($git_index);
+foreach my $git_index (values %index) {
+    unlink($git_index);
+}
 
 if (defined $orig_git_index) {
        $ENV{GIT_INDEX_FILE} = $orig_git_index;