gitweb: Use git-diff-tree patch output for commitdiff
Get rid of git_diff_print invocation in git_commitdiff and therefore external diff (/usr/bin/diff) invocation, and use only git-diff-tree to generate patch. git_commitdiff and git_commitdiff_plain are collapsed into one subroutine git_commitdiff, with format (currently 'html' which is default format corresponding to git_commitdiff, and 'plain' corresponding to git_commitdiff_plain) specified in argument. Separate patch (diff) pretty-printing into git_patchset_body. It is used in git_commitdiff. Separate patch (diff) line formatting from git_diff_print into format_diff_line function. It is used in git_patchset_body. While at it, add $hash parameter to git_difftree_body, according to rule that inner functions should use parameter passing, and not global variables. CHANGES TO OUTPUT: * "commitdiff" now products patches with renaming and copying detection (git-diff-tree is invoked with -M and -C options). Empty patches (mode changes and pure renames and copying) are not written currently. Former version broke renaming and copying, and didn't notice mode changes, like this version. * "commitdiff" output is now divided into several div elements of class "log", "patchset" and "patch". * "commitdiff_plain" now only generates X-Git-Tag: line only if there is tag pointing to the current commit. Former version which wrote first tag following current commit was broken[*1*]; besides we are interested rather in tags _preceding_ the commit, and _heads_ following the commit. X-Git-Url: now is current URL; former version tried[*2*] to output URL to HTML version of commitdiff. * "commitdiff_plain" is generated by git-diff-tree, and has therefore has git specific extensions to diff format: "git diff" header and optional extended header lines. FOOTNOTES [*1*] First it generated rev-list starting from HEAD even if hash_base parameter was set, second it wasn't corrected according to changes made in git_get_references (formerly read_info_ref) output, third even for older version of read_info_ref output it didn't work for multiple tags pointing to the current commit (rare). [*2*] It wrote URL for commitdiff without hash_parent, which produces diff to first parent and is not the same as current diff if it is diff of merge commit to non-first parent. Signed-off-by: Jakub Narebski <jnareb@gmail.com> Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Jakub Narebski
Junio C Hamano
parent
498fe00201
commit
eee08903b2
@ -524,6 +524,27 @@ sub format_subject_html {
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}
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}
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sub format_diff_line {
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my $line = shift;
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my $char = substr($line, 0, 1);
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my $diff_class = "";
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chomp $line;
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if ($char eq '+') {
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$diff_class = " add";
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} elsif ($char eq "-") {
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$diff_class = " rem";
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} elsif ($char eq "@") {
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$diff_class = " chunk_header";
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} elsif ($char eq "\\") {
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# skip errors (incomplete lines)
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return "";
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}
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$line = untabify($line);
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return "<div class=\"diff$diff_class\">" . esc_html($line) . "</div>\n";
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}
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## ----------------------------------------------------------------------
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## git utility subroutines, invoking git commands
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@ -1367,7 +1388,7 @@ sub git_print_simplified_log {
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## functions printing large fragments of HTML
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sub git_difftree_body {
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my ($difftree, $parent) = @_;
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my ($difftree, $hash, $parent) = @_;
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print "<div class=\"list_head\">\n";
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if ($#{$difftree} > 10) {
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@ -1518,6 +1539,101 @@ sub git_difftree_body {
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print "</table>\n";
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}
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sub git_patchset_body {
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my ($patchset, $difftree, $hash, $hash_parent) = @_;
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my $patch_idx = 0;
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my $in_header = 0;
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my $patch_found = 0;
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my %diffinfo;
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print "<div class=\"patchset\">\n";
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LINE: foreach my $patch_line (@$patchset) {
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if ($patch_line =~ m/^diff /) { # "git diff" header
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# beginning of patch (in patchset)
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if ($patch_found) {
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# close previous patch
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print "</div>\n"; # class="patch"
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} else {
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# first patch in patchset
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$patch_found = 1;
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}
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print "<div class=\"patch\">\n";
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%diffinfo = parse_difftree_raw_line($difftree->[$patch_idx++]);
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# for now, no extended header, hence we skip empty patches
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# companion to next LINE if $in_header;
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if ($diffinfo{'from_id'} eq $diffinfo{'to_id'}) { # no change
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$in_header = 1;
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next LINE;
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}
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if ($diffinfo{'status'} eq "A") { # added
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print "<div class=\"diff_info\">" . file_type($diffinfo{'to_mode'}) . ":" .
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$cgi->a({-href => href(action=>"blob", hash_base=>$hash,
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hash=>$diffinfo{'to_id'}, file_name=>$diffinfo{'file'})},
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$diffinfo{'to_id'}) . "(new)" .
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"</div>\n"; # class="diff_info"
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} elsif ($diffinfo{'status'} eq "D") { # deleted
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print "<div class=\"diff_info\">" . file_type($diffinfo{'from_mode'}) . ":" .
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$cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
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hash=>$diffinfo{'from_id'}, file_name=>$diffinfo{'file'})},
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$diffinfo{'from_id'}) . "(deleted)" .
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"</div>\n"; # class="diff_info"
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} elsif ($diffinfo{'status'} eq "R" || # renamed
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$diffinfo{'status'} eq "C") { # copied
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print "<div class=\"diff_info\">" .
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file_type($diffinfo{'from_mode'}) . ":" .
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$cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
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hash=>$diffinfo{'from_id'}, file_name=>$diffinfo{'from_file'})},
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$diffinfo{'from_id'}) .
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" -> " .
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file_type($diffinfo{'to_mode'}) . ":" .
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$cgi->a({-href => href(action=>"blob", hash_base=>$hash,
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hash=>$diffinfo{'to_id'}, file_name=>$diffinfo{'to_file'})},
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$diffinfo{'to_id'});
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print "</div>\n"; # class="diff_info"
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} else { # modified, mode changed, ...
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print "<div class=\"diff_info\">" .
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file_type($diffinfo{'from_mode'}) . ":" .
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$cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
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hash=>$diffinfo{'from_id'}, file_name=>$diffinfo{'file'})},
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$diffinfo{'from_id'}) .
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" -> " .
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file_type($diffinfo{'to_mode'}) . ":" .
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$cgi->a({-href => href(action=>"blob", hash_base=>$hash,
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hash=>$diffinfo{'to_id'}, file_name=>$diffinfo{'file'})},
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$diffinfo{'to_id'});
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print "</div>\n"; # class="diff_info"
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}
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#print "<div class=\"diff extended_header\">\n";
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$in_header = 1;
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next LINE;
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} # start of patch in patchset
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if ($in_header && $patch_line =~ m/^---/) {
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#print "</div>\n"
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$in_header = 0;
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}
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next LINE if $in_header;
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print format_diff_line($patch_line);
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}
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print "</div>\n" if $patch_found; # class="patch"
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print "</div>\n"; # class="patchset"
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}
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# . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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sub git_shortlog_body {
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# uses global variable $project
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my ($revlist, $from, $to, $refs, $extra) = @_;
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@ -2556,7 +2672,7 @@ sub git_commit {
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git_print_log($co{'comment'});
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print "</div>\n";
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git_difftree_body(\@difftree, $parent);
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git_difftree_body(\@difftree, $hash, $parent);
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git_footer_html();
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}
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@ -2600,7 +2716,7 @@ sub git_blobdiff_plain {
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}
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sub git_commitdiff {
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mkdir($git_temp, 0700);
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my $format = shift || 'html';
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my %co = parse_commit($hash);
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if (!%co) {
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die_error(undef, "Unknown commit object");
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@ -2608,141 +2724,104 @@ sub git_commitdiff {
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if (!defined $hash_parent) {
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$hash_parent = $co{'parent'} || '--root';
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}
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open my $fd, "-|", $GIT, "diff-tree", '-r', $hash_parent, $hash
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or die_error(undef, "Open git-diff-tree failed");
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my @difftree = map { chomp; $_ } <$fd>;
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close $fd or die_error(undef, "Reading git-diff-tree failed");
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# read commitdiff
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my $fd;
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my @difftree;
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my @patchset;
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if ($format eq 'html') {
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open $fd, "-|", $GIT, "diff-tree", '-r', '-M', '-C',
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"--patch-with-raw", "--full-index", $hash_parent, $hash
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or die_error(undef, "Open git-diff-tree failed");
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while (chomp(my $line = <$fd>)) {
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# empty line ends raw part of diff-tree output
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last unless $line;
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push @difftree, $line;
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}
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@patchset = map { chomp; $_ } <$fd>;
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close $fd
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or die_error(undef, "Reading git-diff-tree failed");
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} elsif ($format eq 'plain') {
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open $fd, "-|", $GIT, "diff-tree", '-r', '-p', '-B', $hash_parent, $hash
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or die_error(undef, "Open git-diff-tree failed");
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} else {
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die_error(undef, "Unknown commitdiff format");
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}
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# non-textual hash id's can be cached
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my $expires;
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if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
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$expires = "+1d";
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}
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my $refs = git_get_references();
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my $ref = format_ref_marker($refs, $co{'id'});
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my $formats_nav =
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$cgi->a({-href => href(action=>"commitdiff_plain", hash=>$hash, hash_parent=>$hash_parent)},
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"plain");
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git_header_html(undef, $expires);
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git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
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git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
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print "<div class=\"page_body\">\n";
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git_print_simplified_log($co{'comment'}, 1); # skip title
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print "<br/>\n";
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foreach my $line (@difftree) {
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# ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M ls-files.c'
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# ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M rev-tree.c'
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if ($line !~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
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next;
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}
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my $from_mode = $1;
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my $to_mode = $2;
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my $from_id = $3;
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my $to_id = $4;
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my $status = $5;
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my $file = validate_input(unquote($6));
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if ($status eq "A") {
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print "<div class=\"diff_info\">" . file_type($to_mode) . ":" .
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$cgi->a({-href => href(action=>"blob", hash_base=>$hash,
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hash=>$to_id, file_name=>$file)},
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$to_id) . "(new)" .
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"</div>\n";
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git_diff_print(undef, "/dev/null", $to_id, "b/$file");
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} elsif ($status eq "D") {
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print "<div class=\"diff_info\">" . file_type($from_mode) . ":" .
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$cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
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hash=>$from_id, file_name=>$file)},
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$from_id) . "(deleted)" .
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"</div>\n";
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git_diff_print($from_id, "a/$file", undef, "/dev/null");
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} elsif ($status eq "M") {
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if ($from_id ne $to_id) {
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print "<div class=\"diff_info\">" .
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file_type($from_mode) . ":" .
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$cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
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hash=>$from_id, file_name=>$file)},
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$from_id) .
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" -> " .
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file_type($to_mode) . ":" .
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$cgi->a({-href => href(action=>"blob", hash_base=>$hash,
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hash=>$to_id, file_name=>$file)},
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$to_id);
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print "</div>\n";
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git_diff_print($from_id, "a/$file", $to_id, "b/$file");
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}
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}
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}
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print "<br/>\n" .
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"</div>";
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git_footer_html();
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}
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sub git_commitdiff_plain {
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mkdir($git_temp, 0700);
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my %co = parse_commit($hash);
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if (!%co) {
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die_error(undef, "Unknown commit object");
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}
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if (!defined $hash_parent) {
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$hash_parent = $co{'parent'} || '--root';
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}
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open my $fd, "-|", $GIT, "diff-tree", '-r', $hash_parent, $hash
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or die_error(undef, "Open git-diff-tree failed");
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my @difftree = map { chomp; $_ } <$fd>;
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close $fd or die_error(undef, "Reading diff-tree failed");
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# write commit message
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if ($format eq 'html') {
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my $refs = git_get_references();
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my $ref = format_ref_marker($refs, $co{'id'});
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my $formats_nav =
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$cgi->a({-href => href(action=>"commitdiff_plain",
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hash=>$hash, hash_parent=>$hash_parent)},
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"plain");
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# try to figure out the next tag after this commit
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my $tagname;
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my $refs = git_get_references("tags");
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open $fd, "-|", $GIT, "rev-list", "HEAD";
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my @commits = map { chomp; $_ } <$fd>;
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close $fd;
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foreach my $commit (@commits) {
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if (defined $refs->{$commit}) {
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$tagname = $refs->{$commit}
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}
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if ($commit eq $hash) {
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last;
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}
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}
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git_header_html(undef, $expires);
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git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
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git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
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print "<div class=\"page_body\">\n";
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print "<div class=\"log\">\n";
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git_print_simplified_log($co{'comment'}, 1); # skip title
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print "</div>\n"; # class="log"
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print $cgi->header(-type => "text/plain",
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-charset => 'utf-8',
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-content_disposition => "inline; filename=\"git-$hash.patch\"");
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my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
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my $comment = $co{'comment'};
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print <<TEXT;
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} elsif ($format eq 'plain') {
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my $refs = git_get_references("tags");
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my @tagnames;
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if (exists $refs->{$hash}) {
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@tagnames = map { s|^tags/|| } $refs->{$hash};
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}
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my $filename = basename($project) . "-$hash.patch";
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print $cgi->header(
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-type => 'text/plain',
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-charset => 'utf-8',
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-expires => $expires,
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-content_disposition => qq(inline; filename="$filename"));
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my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
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print <<TEXT;
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From: $co{'author'}
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Date: $ad{'rfc2822'} ($ad{'tz_local'})
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Subject: $co{'title'}
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TEXT
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if (defined $tagname) {
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print "X-Git-Tag: $tagname\n";
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}
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print "X-Git-Url: $my_url?p=$project;a=commitdiff;h=$hash\n" .
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"\n";
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foreach my $line (@$comment) {;
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print "$line\n";
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}
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print "---\n\n";
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foreach my $line (@difftree) {
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if ($line !~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
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next;
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foreach my $tag (@tagnames) {
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print "X-Git-Tag: $tag\n";
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}
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my $from_id = $3;
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my $to_id = $4;
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my $status = $5;
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my $file = $6;
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if ($status eq "A") {
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git_diff_print(undef, "/dev/null", $to_id, "b/$file", "plain");
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} elsif ($status eq "D") {
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git_diff_print($from_id, "a/$file", undef, "/dev/null", "plain");
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} elsif ($status eq "M") {
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git_diff_print($from_id, "a/$file", $to_id, "b/$file", "plain");
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print "X-Git-Url: " . $cgi->self_url() . "\n\n";
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foreach my $line (@{$co{'comment'}}) {
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print "$line\n";
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}
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print "---\n\n";
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}
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# write patch
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if ($format eq 'html') {
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#git_difftree_body(\@difftree, $hash, $hash_parent);
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#print "<br/>\n";
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git_patchset_body(\@patchset, \@difftree, $hash, $hash_parent);
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print "</div>\n"; # class="page_body"
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git_footer_html();
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} elsif ($format eq 'plain') {
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local $/ = undef;
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print <$fd>;
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close $fd
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or print "Reading git-diff-tree failed\n";
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}
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}
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sub git_commitdiff_plain {
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git_commitdiff('plain');
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}
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sub git_history {
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