debug log seek error'; + } + $log = do { local $/; <$log> } // do { + warn "readline(log): $!"; + return '
debug log read error'; + }; + $ctx->{-linkify} //= PublicInbox::Linkify->new; + "
debug log:\n\n". + $ctx->{-linkify}->to_html($log).''; +} + +sub stream_blob_parse_hdr { # {parse_hdr} for Qspawn + my ($r, $bref, $ctx) = @_; + my ($git, $oid, $type, $size, $di) = @{$ctx->{-res}}; + my @cl = ('Content-Length', $size); + if (!defined $r) { # sysread error + html_page($ctx, 500, dbg_log($ctx)); + } elsif (index($$bref, "\0") >= 0) { + [200, [qw(Content-Type application/octet-stream), @cl] ]; + } else { + my $n = length($$bref); + if ($n >= $BIN_DETECT || $n == $size) { + return [200, [ 'Content-Type', + 'text/plain; charset=UTF-8', @cl ] ]; + } + if ($r == 0) { + my $log = dbg_log($ctx); + warn "premature EOF on $oid $log"; + return html_page($ctx, 500, $log); + } + undef; # bref keeps growing + } +} + +sub stream_large_blob ($$) { + my ($ctx, $res) = @_; + $ctx->{-res} = $res; my ($git, $oid, $type, $size, $di) = @$res; my $cmd = ['git', "--git-dir=$git->{git_dir}", 'cat-file', $type, $oid]; my $qsp = PublicInbox::Qspawn->new($cmd); - my @cl = ('Content-Length', $size); my $env = $ctx->{env}; $env->{'qspawn.wcb'} = delete $ctx->{-wcb}; - $qsp->psgi_return($env, undef, sub { - my ($r, $bref) = @_; - if (!defined $r) { # error - html_page($ctx, 500, $logref); - } elsif (index($$bref, "\0") >= 0) { - my $ct = 'application/octet-stream'; - [200, ['Content-Type', $ct, @cl ] ]; - } else { - my $n = bytes::length($$bref); - if ($n >= $BIN_DETECT || $n == $size) { - my $ct = 'text/plain; charset=UTF-8'; - return [200, ['Content-Type', $ct, @cl] ]; + $qsp->psgi_return($env, undef, \&stream_blob_parse_hdr, $ctx); +} + +sub show_other_result ($$) { # tag + my ($bref, $ctx) = @_; + if (my $qsp_err = delete $ctx->{-qsp_err}) { + return html_page($ctx, 500, dbg_log($ctx) . + "git show error:$qsp_err"); + } + my $l = PublicInbox::Linkify->new; + utf8::decode($$bref); + html_page($ctx, 200, '
', $l->to_html($$bref), '
glossary +-------- +Commit objects reference one tree, and zero or more parents. + +Single parent commits can typically generate a patch in +unified diff format via `git format-patch'. + +Multiple parents means the commit is a merge. + +Root commits have no ancestor. Note that it is +possible to have multiple root commits when merging independent histories. + +Every commit references one top-level tree object.+EOM + $x = $ctx->zflush($x, $ctx->_html_end); + my $res_hdr = delete $ctx->{-res_hdr}; + push @$res_hdr, 'Content-Length', length($x); + delete($ctx->{env}->{'qspawn.wcb'})->([200, $res_hdr, [$x]]); } -sub solve_result { - my ($ctx, $res, $log, $hints, $fn) = @_; +sub stream_patch_parse_hdr { # {parse_hdr} for Qspawn + my ($r, $bref, $ctx) = @_; + if (!defined $r) { # sysread error + html_page($ctx, 500, dbg_log($ctx)); + } elsif (index($$bref, "\n\n") >= 0) { + my $eml = bless { hdr => $bref }, 'PublicInbox::Eml'; + my $fn = to_filename($eml->header('Subject') // ''); + $fn = substr($fn // 'PATCH-no-subject', 6); # drop "PATCH-" + return [ 200, [ 'Content-Type', 'text/plain; charset=UTF-8', + 'Content-Disposition', + qq(inline; filename=$fn.patch) ] ]; + } elsif ($r == 0) { + my $log = dbg_log($ctx); + warn "premature EOF on $ctx->{patch_oid} $log"; + return html_page($ctx, 500, $log); + } else { + undef; # bref keeps growing until "\n\n" + } +} + +sub show_patch ($$) { + my ($ctx, $res) = @_; + my ($git, $oid) = @$res; + my @cmd = ('git', "--git-dir=$git->{git_dir}", + qw(format-patch -1 --stdout -C), + "--signature=git format-patch -1 --stdout -C $oid", $oid); + my $qsp = PublicInbox::Qspawn->new(\@cmd); + $ctx->{env}->{'qspawn.wcb'} = delete $ctx->{-wcb}; + $ctx->{patch_oid} = $oid; + $qsp->psgi_return($ctx->{env}, undef, \&stream_patch_parse_hdr, $ctx); +} + +sub show_commit ($$) { + my ($ctx, $res) = @_; + return show_patch($ctx, $res) if ($ctx->{fn} // '') =~ /\.patch\z/; + my ($git, $oid) = @$res; + # patch-id needs two passes, and we use the initial show to ensure + # a patch embedded inside the commit message body doesn't get fed + # to patch-id: + my $cmd = [ '/bin/sh', '-c', + "git show --encoding=UTF-8 '$SHOW_FMT'". + " -z --no-notes --no-patch $oid >h && ". + 'git show --encoding=UTF-8 --pretty=format:%n -M'. + " --stat -p $oid >p && ". + "git patch-id --stable
$git->{git_dir} }; + my $qsp = PublicInbox::Qspawn->new($cmd, $e, { -C => "$ctx->{-tmp}" }); + $qsp->{qsp_err} = \($ctx->{-qsp_err} = ''); + $ctx->{env}->{'qspawn.wcb'} = delete $ctx->{-wcb}; + $ctx->{git} = $git; + $qsp->psgi_qx($ctx->{env}, undef, \&show_commit_start, $ctx); +} + +sub show_other ($$) { + my ($ctx, $res) = @_; + my ($git, $oid, $type, $size) = @$res; + $size > $MAX_SIZE and return html_page($ctx, 200, + ascii_html($type)." $oid is too big to show\n". dbg_log($ctx)); + my $cmd = ['git', "--git-dir=$git->{git_dir}", + qw(show --encoding=UTF-8 --no-color --no-abbrev), $oid ]; + my $qsp = PublicInbox::Qspawn->new($cmd); + $qsp->{qsp_err} = \($ctx->{-qsp_err} = ''); + $qsp->psgi_qx($ctx->{env}, undef, \&show_other_result, $ctx); +} - unless (seek($log, 0, 0)) { - $ctx->{env}->{'psgi.errors'}->print("seek(log): $!\n"); - return html_page($ctx, 500, \'seek error'); +sub show_tree_result ($$) { + my ($bref, $ctx) = @_; + if (my $qsp_err = delete $ctx->{-qsp_err}) { + return html_page($ctx, 500, dbg_log($ctx) . + "git ls-tree -z error:$qsp_err"); } - $log = do { local $/; <$log> }; + my @ent = split(/\0/, $$bref); + my $qp = delete $ctx->{qp}; + my $l = $ctx->{-linkify} //= PublicInbox::Linkify->new; + my $pfx = $qp->{b}; + $$bref = "
tree $ctx->{tree_oid}"; + if (defined $pfx) { + my $x = ascii_html($pfx); + $pfx .= '/'; + $$bref .= qq( path: $x\n); + } else { + $pfx = ''; + $$bref .= qq[ (path unknown)\n]; + } + my ($x, $m, $t, $oid, $sz, $f, $n); + $$bref .= "\n size name"; + for (@ent) { + ($x, $f) = split(/\t/, $_, 2); + undef $_; + ($m, $t, $oid, $sz) = split(/ +/, $x, 4); + $m = $GIT_MODE{$m} // '?'; + utf8::decode($f); + $n = ascii_html($f); + if ($m eq 'g') { # gitlink submodule commit + $$bref .= "\ng\t\t$n @ commit$oid"; + next; + } + my $q = 'b='.ascii_html(uri_escape_path($pfx.$f)); + if ($m eq 'd') { $n .= '/' } + elsif ($m eq 'x') { $n = "$n" } + elsif ($m eq 'l') { $n = "$n" } + $$bref .= qq(\n$m\t$sz\t$n); + } + $$bref .= dbg_log($ctx); + $$bref .= <+EOM + chop $$bref; + html_page($ctx, 200, $$bref); +} + +sub show_tree ($$) { + my ($ctx, $res) = @_; + my ($git, $oid, undef, $size) = @$res; + $size > $MAX_SIZE and return html_page($ctx, 200, + "tree $oid is too big to show\n". dbg_log($ctx)); + my $cmd = [ 'git', "--git-dir=$git->{git_dir}", + qw(ls-tree -z -l --no-abbrev), $oid ]; + my $qsp = PublicInbox::Qspawn->new($cmd); + $ctx->{tree_oid} = $oid; + $qsp->{qsp_err} = \($ctx->{-qsp_err} = ''); + $qsp->psgi_qx($ctx->{env}, undef, \&show_tree_result, $ctx); +} - $res or return html_page($ctx, 404, \$log); - $ref eq 'ARRAY' or return html_page($ctx, 500, \$log); +# user_cb for SolverGit, called as: user_cb->($result_or_error, $uarg) +sub solve_result { + my ($res, $ctx) = @_; + my $hints = delete $ctx->{hints}; + $res or return html_page($ctx, 404, dbg_log($ctx)); + ref($res) eq 'ARRAY' or return html_page($ctx, 500, dbg_log($ctx)); my ($git, $oid, $type, $size, $di) = @$res; - my $path = to_filename($di->{path_b} || $hints->{path_b} || 'blob'); + return show_commit($ctx, $res) if $type eq 'commit'; + return show_tree($ctx, $res) if $type eq 'tree'; + return show_other($ctx, $res) if $type ne 'blob'; + my $path = to_filename($di->{path_b} // $hints->{path_b} // 'blob'); my $raw_link = "(raw)"; - if ($size > $max_size) { - return stream_large_blob($ctx, $res, \$log, $fn) if defined $fn; - $log = "glossary +-------- +Tree objects belong to commits or other tree objects. Trees may +reference blobs, sub-trees, or commits of submodules. - my $ref = ref($res); - my $l = PublicInbox::Linkify->new; - $l->linkify_1($log); - $log = ' debug log:' . - $l->linkify_2(ascii_html($log)) . ''; +Path names are stored in tree objects, but trees do not know +their own path name. A tree's path name comes from their parent tree, +or it is the root tree referenced by a commit object. Thus, this web UI +relies on the `b=' URI parameter as a hint to display the path name. + +Commit objects may be stored in trees to reference submodules.
Too big to show, download available\n" . - "$oid $type $size bytes $raw_link" . $log; - return html_page($ctx, 500, \$log); + if ($size > $MAX_SIZE) { + return stream_large_blob($ctx, $res) if defined $ctx->{fn}; + return html_page($ctx, 200, <
$e" . $log; - return html_page($ctx, 500, \$log); + warn "$e ($git->{git_dir})"; + return html_page($ctx, 500, "
$e".dbg_log($ctx)) } - my $binary = index($$blob, "\0") >= 0; - if (defined $fn) { + my $bin = index(substr($$blob, 0, $BIN_DETECT), "\0") >= 0; + if (defined $ctx->{fn}) { my $h = [ 'Content-Length', $size, 'Content-Type' ]; - push(@$h, ($binary ? 'application/octet-stream' : 'text/plain')); + push(@$h, ($bin ? 'application/octet-stream' : 'text/plain')); return delete($ctx->{-wcb})->([200, $h, [ $$blob ]]); } - if ($binary) { - $log = "
$oid $type $size bytes (binary)" . - " $raw_link" . $log; - return html_page($ctx, 200, \$log); - } + $bin and return html_page($ctx, 200, + "
blob $oid $size bytes (binary)" . + " $raw_link".dbg_log($ctx)); # TODO: detect + convert to ensure validity utf8::decode($$blob); - my $nl = ($$blob =~ tr/\n/\n/); + my $nl = ($$blob =~ s/\r?\n/\n/sg); my $pad = length($nl); - $l->linkify_1($$blob); + ($ctx->{-linkify} //= PublicInbox::Linkify->new)->linkify_1($$blob); my $ok = $hl->do_hl($blob, $path) if $hl; if ($ok) { - src_escape($$ok); $blob = $ok; } else { $$blob = ascii_html($$blob); } - # using some of the same CSS class names and ids as cgit - $log = "
$oid $type $size bytes $raw_link" . + my $x = "
blob $oid $size bytes $raw_link" . "
" . join('', map { - sprintf("% ${pad}u\n", $_) - } (1..$nl)) . ' | ' .
- '
|
"; + $x .= sprintf("% ${pad}u\n", $_) for (1..$nl); + $x .= '
";
- html_page($ctx, 200, \$log);
+ # using some of the same CSS class names and ids as cgit
+ html_page($ctx, 200, $x, $ctx->{-linkify}->linkify_2($$blob),
+ '