From 6d55f05576851aedc7c53f7438c1d505c22ee78f Mon Sep 17 00:00:00 2001 From: Jakub Narebski Date: Sat, 18 Nov 2006 23:35:39 +0100 Subject: [PATCH] gitweb: Buffer diff header to deal with split patches + git_patchset_body refactoring There are some cases when one line from "raw" git-diff output (raw format) corresponds to more than one patch in the patchset git-diff output. To deal with this buffer git diff header and extended diff header (everything up to actual patch) to check from information from "index .." extended header line if the patch corresponds to the same or next difftree raw line. This could also be used to gather information needed for hyperlinking, and used for printing gitweb quoted filenames, from extended diff header instead of raw git-diff output. While at it, refactor git_patchset_body subroutine from the event-driven, AWK-like state-machine parsing to sequential parsing: for each patch parse (and output) git diff header, parse extended diff header, parse two-line from-file/to-file diff header, parse patch itself; patch ends with the end of input [file] or the line matching m/^diff /. For better understanding the code, there were added assertions in the comments a la Carp::Assert module. Just in case there is commented out code dealing with unexpected end of input (should not happen, hence commented out). Signed-off-by: Jakub Narebski Signed-off-by: Junio C Hamano --- gitweb/gitweb.perl | 235 ++++++++++++++++++++++++++------------------- 1 file changed, 136 insertions(+), 99 deletions(-) diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl index b2482febf..bf58c3bac 100755 --- a/gitweb/gitweb.perl +++ b/gitweb/gitweb.perl @@ -2202,31 +2202,56 @@ sub git_patchset_body { my ($fd, $difftree, $hash, $hash_parent) = @_; my $patch_idx = 0; - my $in_header = 0; - my $patch_found = 0; + my $patch_line; my $diffinfo; my (%from, %to); + my ($from_id, $to_id); print "
\n"; - LINE: - while (my $patch_line = <$fd>) { + # skip to first patch + while ($patch_line = <$fd>) { chomp $patch_line; - if ($patch_line =~ m/^diff /) { # "git diff" header - # beginning of patch (in patchset) - if ($patch_found) { - # close extended header for previous empty patch - if ($in_header) { - print "
\n" # class="diff extended_header" - } - # close previous patch - print "\n"; # class="patch" - } else { - # first patch in patchset - $patch_found = 1; + last if ($patch_line =~ m/^diff /); + } + + PATCH: + while ($patch_line) { + my @diff_header; + + # git diff header + #assert($patch_line =~ m/^diff /) if DEBUG; + #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed + push @diff_header, $patch_line; + + # extended diff header + EXTENDED_HEADER: + while ($patch_line = <$fd>) { + chomp $patch_line; + + last EXTENDED_HEADER if ($patch_line =~ m/^--- /); + + if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) { + $from_id = $1; + $to_id = $2; } - print "
\n"; + + push @diff_header, $patch_line; + } + #last PATCH unless $patch_line; + my $last_patch_line = $patch_line; + + # check if current patch belong to current raw line + # and parse raw git-diff line if needed + if (defined $diffinfo && + $diffinfo->{'from_id'} eq $from_id && + $diffinfo->{'to_id'} eq $to_id) { + # this is split patch + print "
\n"; + } else { + # advance raw git-diff output if needed + $patch_idx++ if defined $diffinfo; # read and prepare patch information if (ref($difftree->[$patch_idx]) eq "HASH") { @@ -2247,100 +2272,112 @@ sub git_patchset_body { hash=>$diffinfo->{'to_id'}, file_name=>$to{'file'}); } - $patch_idx++; - - # print "git diff" header - $patch_line =~ s!^(diff (.*?) )"?a/.*$!$1!; - if ($from{'href'}) { - $patch_line .= $cgi->a({-href => $from{'href'}, -class => "path"}, - 'a/' . esc_path($from{'file'})); - } else { # file was added - $patch_line .= 'a/' . esc_path($from{'file'}); - } - $patch_line .= ' '; - if ($to{'href'}) { - $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"}, - 'b/' . esc_path($to{'file'})); - } else { # file was deleted - $patch_line .= 'b/' . esc_path($to{'file'}); - } - - print "
$patch_line
\n"; - print "
\n"; - $in_header = 1; - next LINE; + # this is first patch for raw difftree line with $patch_idx index + # we index @$difftree array from 0, but number patches from 1 + print "
\n"; } - if ($in_header) { - if ($patch_line !~ m/^---/) { - # match - if ($patch_line =~ s!^((copy|rename) from ).*$!$1! && $from{'href'}) { - $patch_line .= $cgi->a({-href=>$from{'href'}, -class=>"path"}, - esc_path($from{'file'})); - } - if ($patch_line =~ s!^((copy|rename) to ).*$!$1! && $to{'href'}) { - $patch_line = $cgi->a({-href=>$to{'href'}, -class=>"path"}, - esc_path($to{'file'})); - } - # match - if ($patch_line =~ m/\s(\d{6})$/) { - $patch_line .= ' (' . - file_type_long($1) . - ')'; + # print "git diff" header + $patch_line = shift @diff_header; + $patch_line =~ s!^(diff (.*?) )"?a/.*$!$1!; + if ($from{'href'}) { + $patch_line .= $cgi->a({-href => $from{'href'}, -class => "path"}, + 'a/' . esc_path($from{'file'})); + } else { # file was added + $patch_line .= 'a/' . esc_path($from{'file'}); + } + $patch_line .= ' '; + if ($to{'href'}) { + $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"}, + 'b/' . esc_path($to{'file'})); + } else { # file was deleted + $patch_line .= 'b/' . esc_path($to{'file'}); + } + print "
$patch_line
\n"; + + # print extended diff header + print "
\n" if (@diff_header > 0); + EXTENDED_HEADER: + foreach $patch_line (@diff_header) { + # match + if ($patch_line =~ s!^((copy|rename) from ).*$!$1! && $from{'href'}) { + $patch_line .= $cgi->a({-href=>$from{'href'}, -class=>"path"}, + esc_path($from{'file'})); + } + if ($patch_line =~ s!^((copy|rename) to ).*$!$1! && $to{'href'}) { + $patch_line = $cgi->a({-href=>$to{'href'}, -class=>"path"}, + esc_path($to{'file'})); + } + # match + if ($patch_line =~ m/\s(\d{6})$/) { + $patch_line .= ' (' . + file_type_long($1) . + ')'; + } + # match + if ($patch_line =~ m/^index/) { + my ($from_link, $to_link); + if ($from{'href'}) { + $from_link = $cgi->a({-href=>$from{'href'}, -class=>"hash"}, + substr($diffinfo->{'from_id'},0,7)); + } else { + $from_link = '0' x 7; } - # match - if ($patch_line =~ m/^index/) { - my ($from_link, $to_link); - if ($from{'href'}) { - $from_link = $cgi->a({-href=>$from{'href'}, -class=>"hash"}, - substr($diffinfo->{'from_id'},0,7)); - } else { - $from_link = '0' x 7; - } - if ($to{'href'}) { - $to_link = $cgi->a({-href=>$to{'href'}, -class=>"hash"}, - substr($diffinfo->{'to_id'},0,7)); - } else { - $to_link = '0' x 7; - } - my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'}); - $patch_line =~ s!$from_id\.\.$to_id!$from_link..$to_link!; + if ($to{'href'}) { + $to_link = $cgi->a({-href=>$to{'href'}, -class=>"hash"}, + substr($diffinfo->{'to_id'},0,7)); + } else { + $to_link = '0' x 7; } - print $patch_line . "
\n"; - - } else { - #$in_header && $patch_line =~ m/^---/; - print "
\n"; # class="diff extended_header" - $in_header = 0; + #affirm { + # my ($from_hash, $to_hash) = + # ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/); + # my ($from_id, $to_id) = + # ($diffinfo->{'from_id'}, $diffinfo->{'to_id'}); + # ($from_hash eq $from_id) && ($to_hash eq $to_id); + #} if DEBUG; + my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'}); + $patch_line =~ s!$from_id\.\.$to_id!$from_link..$to_link!; + } + print $patch_line . "
\n"; + } + print "
\n" if (@diff_header > 0); # class="diff extended_header" + + # from-file/to-file diff header + $patch_line = $last_patch_line; + #assert($patch_line =~ m/^---/) if DEBUG; + if ($from{'href'}) { + $patch_line = '--- a/' . + $cgi->a({-href=>$from{'href'}, -class=>"path"}, + esc_path($from{'file'})); + } + print "
$patch_line
\n"; - if ($from{'href'}) { - $patch_line = '--- a/' . - $cgi->a({-href=>$from{'href'}, -class=>"path"}, - esc_path($from{'file'})); - } - print "
$patch_line
\n"; + $patch_line = <$fd>; + #last PATCH unless $patch_line; + chomp $patch_line; - $patch_line = <$fd>; - chomp $patch_line; + #assert($patch_line =~ m/^+++/) if DEBUG; + if ($to{'href'}) { + $patch_line = '+++ b/' . + $cgi->a({-href=>$to{'href'}, -class=>"path"}, + esc_path($to{'file'})); + } + print "
$patch_line
\n"; - #$patch_line =~ m/^+++/; - if ($to{'href'}) { - $patch_line = '+++ b/' . - $cgi->a({-href=>$to{'href'}, -class=>"path"}, - esc_path($to{'file'})); - } - print "
$patch_line
\n"; + # the patch itself + LINE: + while ($patch_line = <$fd>) { + chomp $patch_line; - } + next PATCH if ($patch_line =~ m/^diff /); - next LINE; + print format_diff_line($patch_line); } - print format_diff_line($patch_line); + } continue { + print "
\n"; # class="patch" } - print "
\n" if $in_header; # extended header - - print "
\n" if $patch_found; # class="patch" print "\n"; # class="patchset" } -- 2.26.2