/[Frey]/branches/zimbardo/lib/Frey/Web.pm
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Revision 1045 - (show annotations)
Thu Mar 12 20:56:04 2009 UTC (15 years ago) by dpavlin
Original Path: trunk/lib/Frey/Web.pm
File size: 17881 byte(s)
javascript might have in it something which looks like html, but we still want to wrap it correctly
1 package Frey::Web;
2 use Moose::Role;
3
4 with 'Frey::Session';
5
6 use Data::Dump qw/dump/;
7 use Carp qw/confess cluck carp/;
8 use File::Slurp;
9 use Text::Tabs; # expand, unexpand
10
11 use lib 'lib';
12
13 use Frey::Types;
14
15 use Frey::Bookmarklet;
16 use Frey::Class::Browser;
17 use Frey::INC;
18
19 use Frey::SVK;
20
21 our @head;
22 sub head { @head }
23
24 has 'request_url' => (
25 is => 'rw',
26 isa => 'Uri', coerce => 1,
27 required => 1,
28 default => sub {
29 carp "undefined request_url";
30 '/';
31 },
32 );
33
34 has 'title' => (
35 is => 'rw',
36 isa => 'Str',
37 lazy => 1,
38 default => sub {
39 my ($self) = @_;
40 ref($self);
41 },
42 );
43
44 has 'content_type' => (
45 is => 'rw',
46 isa => 'Str',
47 default => 'text/html',
48 documentation => 'Content-type header',
49 );
50
51 has 'dump_max_bytes' => (
52 is => 'rw',
53 isa => 'Int',
54 default => 4096,
55 documentation => 'maximum dump size sent to browser before truncation',
56 );
57
58 has 'inline_smaller_than' => (
59 is => 'rw',
60 isa => 'Int',
61 default => 10240,
62 documentation => 'inline JavaScript and CSS to reduce round-trips',
63 );
64
65 has 'html_dump_width' => (
66 documentation => 'crop longer lines in dumps',
67 is => 'rw',
68 isa => 'Int',
69 # required => 1, # FIXME we can't have required fields with defaults because Frey::Action isn't smart enough and asks for them
70 default => 250,
71 );
72
73 has 'wrap_in_page' => (
74 documentation => 'wrap full html page with status bar around content',
75 is => 'rw',
76 isa => 'Bool',
77 default => 1,
78 );
79
80 my %escape = ('<'=>'&lt;', '>'=>'&gt;', '&'=>'&amp;', '"'=>'&quot;');
81 my $escape_re = join '|' => keys %escape;
82
83 sub html_escape {
84 my ( $self, $html ) = @_;
85 return '' unless defined $html;
86 $html =~ s/($escape_re)/$escape{$1}/g;
87 return $html;
88 }
89
90 # from Mojo::ByteStream
91 sub url_escape {
92 my ( $self, $url, $pattern ) = @_;
93 $pattern ||= 'A-Za-z0-9\-\.\_\~';
94 $url =~ s/([^$pattern])/sprintf('%%%02X',ord($1))/ge;
95 return $url;
96 }
97
98 sub html_dump {
99 my ( $self, $dump ) = @_;
100 $dump = dump( $dump ) if ref($dump);
101 my $width = $self->html_dump_width;
102 $dump =~ s{(\n[^\n]{$width})([^\n]+?)([^\n]{5})}{\n$1...$3}gs;
103 $dump = $self->html_escape( $dump );
104 $dump =~ s{\Q...\E}{&hellip;}gs;
105 # $dump =~ $self->html_links( $dump ); # FIXME include this
106 return "<code>$dump</code>";
107 }
108
109 sub popup { my $self = shift; $self->popup_dropdown('popup', @_); }
110 sub dropdown { my $self = shift; $self->popup_dropdown('dropdown', @_); }
111
112 our $re_html = qr{<(?:!--|(\w+)|[^>]+)/?>}s; # relaxed html check for one semi-valid tag
113
114 sub popup_dropdown {
115 my ( $self, $type, $name, $content, $full ) = @_;
116
117 $content = $self->html_dump($content) if ref $content;
118
119 $content = qq|<span>$content</span>| unless $content =~ m{^\s*<(span|a|code).+?/\1>\s*};
120
121 $content =~ s{<span>(<code>[^<]+</code>)</span>}{$1} && $self->TODO("code wrapped in span");
122
123 warn "## $type [$name] = ", length( $content ), " bytes"; # if $self->debug; # FIXME
124
125 if ( $name =~ m{::} && $name !~ $re_html ) {
126 return qq|<a class="frey-$type" target="$name" href="/$name">$name $content</a>\n|;
127 } elsif ( $name =~ s{^\s*(<a)\s+}{$1 class="frey-$type"} ) {
128 return qq|$name $content\n|;
129 } else {
130 return qq|<span class="frey-$type">$name $content</span>\n|;
131 }
132 }
133
134 sub _inline {
135 my ( $self, $path ) = @_;
136 return unless defined $path;
137 warn "# _inline $path";
138 -e $path && -s $path < $self->inline_smaller_than && -s $path;
139 }
140
141 sub _head_html {
142 my $self = shift;
143 my $out = '';
144 foreach my $path ( @head ) {
145 $path =~ s!^/!!;
146 if ( $path =~ m/\.js$/ ) {
147 my $size;
148 $out .= $size = _inline( $path ) ?
149 qq|<script type="text/javascript">\n/* inline $path $size bytes */\n\n| . read_file($path) . qq|\n</script>| :
150 qq|<script type="text/javascript" src="/$path"></script>|;
151 } elsif ( $path =~ m/\.css$/ ) {
152 my $size;
153 $out .= $size = _inline( $path ) ?
154 qq|<style type="text/css">\n/* inline $path $size bytes */\n\n| . read_file( $path ) . qq|\n</style>| :
155 qq|<link type="text/css" rel="stylesheet" href="/$path" media="screen">|;
156 } elsif ( $path =~ m{<.+>}s ) {
157 $out .= $path;
158 } else {
159 confess "don't know how to render $path";
160 }
161 $out .= "\n";
162 }
163 return $out;
164 }
165
166 =head2 add_head
167
168 $o->add_head( 'path/to/external.js' );
169
170 my $size = $o->add_head( 'path/to/external.css' );
171
172 $o->add_head( '<!-- html content -->' );
173
174 =cut
175
176 sub add_head {
177 my ( $self, $path ) = @_;
178 return if ! defined $path || $path eq '';
179 $path =~ s!^/!!;
180
181 if ( $path =~ $re_html ) {
182 push @head, $path;
183 } elsif ( -e $path ) {
184 if ( $path =~ m/\.(?:js|css)$/ ) {
185 push @head, $path;
186 } else {
187 confess "can't add_head( $path ) it's not js or css";
188 }
189 return -s $path;
190 } else {
191 confess "can't find $path: $!";
192 }
193
194 }
195
196 sub _add_css_js {
197 my ( $self, $what, $content ) = @_;
198
199 my $tag = $what eq 'css' ? 'style' : 'script';
200 my $type = $what eq 'css' ? 'text/css' : 'text/javascript';
201 my $head;
202
203 my ( $package, $path, $line ) = caller(1);
204
205 $content = "/$content" if $content !~ m{[\n\r]} && -e $content;
206 if ( $content =~ $re_html && $what ne 'js' ) {
207 $head = qq|
208 $content
209 <!-- $type via $package at $path line $line -->
210 |;
211 } elsif ( $content =~ m{^(/\w+|https?://)} && $content !~ m{[\n\r]} ) {
212 if ( $what eq 'js' ) {
213 $head = qq|
214 <$tag type="$type" src="$content">
215 /* $what via $package at $path line $line */
216 </$tag>
217 |;
218 } else {
219 $head = qq|
220 <link rel="stylesheet" type="$type" href="$content">
221 <!-- $what via $package at $path line $line -->
222 |;
223 }
224 } else {
225 $head = qq|
226 <$tag type="$type">
227 /* via $package at $path line $line */
228 $content
229 </$tag>
230 |;
231 };
232 $self->add_head( $head );
233 }
234
235 sub add_css {
236 my ($self,$css) = @_;
237 $self->_add_css_js( 'css', $css );
238 }
239
240 sub add_js {
241 my ($self,$js) = @_;
242 $self->_add_css_js( 'js', $js );
243 }
244
245 our $reload_counter = 0;
246
247
248 =head2 html_page
249
250 $self->html_page(
251 title => 'page title',
252 head => '<!-- optional head markup -->',
253 body => '<b>Page Body</b>',
254 );
255
256 =cut
257
258 our @status;
259 sub status { @status };
260
261 our $icon_html;
262
263 sub html_page {
264 my $self = shift;
265 my $a = {@_};
266
267 $reload_counter++;
268
269 my $status_line = '';
270
271 foreach my $part ( @status ) {
272 foreach my $name ( keys %$part ) {
273 $status_line .= $self->popup( $name, $part->{$name} );
274 }
275 }
276
277 my $url = $self->request_url;
278 $url =~ s{\?reload=\d+}{};
279
280 my $body = $a->{body};
281 if ( ! $body ) {
282 my $run = $a->{run} || 'as_markup';
283 warn "# no body, invoke $self->$run on ", ref($self);
284 $body = $self->$run;
285 }
286 if ( $self->content_type !~ m{html} || ! $self->wrap_in_page ) {
287 warn "# return only $self body ", $self->content_type;
288 return $body
289 } elsif ( ! defined $body ) {
290 warn "# no body";
291 $body = '<!-- no body -->';
292 }
293
294 $status_line .= $self->warnings_html;
295
296 my ($exit,$description) = ('exit','stop server');
297 ($exit,$description) = ('restart','restart server')
298 if $ENV{FREY_RESTART}; # tune labels on exit link
299
300 my $right =
301 qq|
302 <span class="frey-status-right">
303 <a title="reload $url" href="/reload$url">reload</a>
304 <a title="$description" href="/exit$url" target="exit">$exit</a>
305 </span>
306 |;
307
308 my $svk = Frey::SVK->new;
309 my $info = $svk->info;
310 my $revision = $svk->info->{Revision} || '';
311 $revision = $1 if $info->{'Mirrored From'} =~ m{Rev\.\s+(\d+)};
312
313 $self->add_icon unless $icon_html;
314
315 my $title = undef
316 || $a->{title}
317 || $self->title
318 || ref($self)
319 ;
320
321 # $title =~ s{(\w)\w+::}{$1:}g; # XXX compress names of classes
322
323 $self->add_css(qq|
324 body {
325 padding-bottom: 3em; /* don't overlap status line */
326 }
327 |);
328
329 my $html = join("\n",
330 qq|<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"><html><head>|,
331 $self->_head_html,
332 qq|<title>$title</title>|,
333 '<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">',
334 ( $icon_html || '<!-- no icon -->' ),
335 ( $a->{head} || '' ),
336 qq|
337 </head><body>
338 $body
339 <div class="frey-status-line">
340 <a href="/">Frey</a> $Frey::VERSION $revision
341 $status_line
342 $right
343 </div>
344 </body></html>
345 |,
346 );
347
348 warn "## >>> page ",length($html), " bytes\n" if $self->debug;
349
350 return $html;
351 }
352
353 =head2 editor
354
355 Create HTML editor link with optional line and title
356
357 my $html = $self->editor( $class, $line, $title );
358
359 =cut
360
361 sub editor {
362 my ( $self, $class, $line, $title ) = @_;
363 confess "need class" unless $class;
364 if ( ! defined $title ) {
365 $title = "edit $class";
366 $title .= " line $line" if $line;
367 }
368 $line ||= 1;
369 qq|<a target="editor" href="/editor+$class+$line"| .
370 ( $title ? qq| title="$title"| : '' ) .
371 qq|>$class</a>|;
372 }
373
374 =head2 html_links
375
376 Create HTML links to editor for perl error message
377
378 my $html = $self->html_links( $error )
379
380 =cut
381
382 sub html_links {
383 my ( $self, $error ) = @_;
384
385 $error = $self->strip_full_path( $error );
386
387 # $error =~ s[(bless\({\s+.+?\s+},\s+)("[^"]+")(\) at)][<span class="frey-dropdown">$1<code>$2</code>$3</span>]gs; # FIXME insert bless hiding back
388
389 # perl's backtrace
390 $error =~ s{at\s+(\S+)\s+line\s+(\d+)}
391 {at <a target="editor" href="/editor+$1+$2" title="vi $1 +$2">$1</a> line $2}gsm;
392
393 $error =~ s{(via (?:package)\s+"?)([\w:]+)("?)}
394 {$1<a target="$2" href="/$2" title="introspect $2">$2</a>$3}gsm
395 || # or anything that looks like "Class::Name"
396 $error =~ s{"(\w+(?:::\w+)+)"}
397 {"<a target="$1" href="/$1" title="introspect $1">$1</a>"}gsm;
398
399 # method error messages
400 # FIXME replace with link to Frey::Introspect data
401 $error =~ s{(method ")(\w+)(" via)}
402 {$1<a target="$2" href="/Frey::Shell::Grep/as_markup?pattern=$2" title="grep $2">$2</a>$3}gsm;
403
404 # link paths to editor
405 $error =~ s{((?:lib|t)/[\S]+)\s+(\d+\s+bytes)}
406 {<a target="editor" href="/editor+$1+1" title="vi $1 [$2]">$1</a>}gsm;
407
408 $error =~ s{(class ")([\w:]+)(")}
409 {$1<a target="$2" href="/$2" title="introspect $2">$2</a>$3}gsm;
410
411 return $error;
412 }
413
414 sub html_self {
415 my $self = shift;
416 my $html = $self;
417 $html =~ s{([\w:]+)=}{<a target="$1" href="/$1" title="introspect $1">$1</a>=}gsm;
418 return $html;
419 }
420
421 =head2 error
422
423 This method will return error to browser and backtrace unless
424 error message ends with LF C<\n> just like L<warn>
425
426 =cut
427
428 sub error {
429 my $self = shift;
430 my $error = join(" ", @_);
431
432 my $fatal = '';
433 my $backtrace = '';
434
435 if ( $error !~ m{\n$} ) {
436 if ( my @backtrace = $self->backtrace ) {
437 $backtrace =
438 "\n" . $self->html_self . "->error backtrace\n\t"
439 . $self->html_links( join( "\n\t", @backtrace ) )
440 ;
441 $fatal = qq| frey-fatal|;
442 }
443 }
444
445 warn "ERROR: $error\n";
446 $self->add_icon('error');
447 $error = $self->html_links( $error );
448 return qq|<pre class="frey-error$fatal">$error $backtrace</pre>| ;
449 }
450
451 =head1 Status line
452
453 =head2 add_status
454
455 $self->add_status( { name => { some => 'data' } } );
456
457 $self->add_status( "append to last status popup" );
458
459 =cut
460
461 sub add_status {
462 my ( $self, $data ) = @_;
463 die "no data" unless $data;
464 if ( ref $data ) {
465 push @status, $data;
466 } else {
467 if ( defined $status[ $#status ] ) {
468 $status[ $#status ]->{ '+' } = $data;
469 } else {
470 push @status, { '+' => $data };
471 }
472 }
473 }
474
475 =head2 clean_status
476
477 Called at beginning of each request
478
479 $self->clean_status;
480
481 =cut
482
483 sub clean_status {
484 my ($self) = shift;
485 @head = ( 'static/frey.css' );
486 @status = (
487 { 'ClassBrowser' => Frey::Class::Browser->new( usage_sort => 1, usage_on_top => 0 )->as_markup },
488 { 'Bookmarklets' => Frey::Bookmarklet->new->as_markup },
489 { 'INC' => Frey::INC->new->as_markup },
490 );
491 $icon_html = '';
492 }
493
494 =head2 status_parts
495
496 Dump all status line parts
497
498 $self->status_parts
499
500 =cut
501
502 sub status_parts {
503 warn "## status parts ", dump( map { keys %$_ } @status );
504 }
505
506 =for debug
507
508 sub DEMOLISH {
509 my ( $self ) = @_;
510 warn "## $self DEMOLISH status ", $#status + 1, " elements ", dump( map { keys %$_ } @status ) if @status;
511 }
512
513 =cut
514
515 =head2 add_icon
516
517 Frey::Foo->add_icon; # /static/icons/Frey/Foo.png
518 Frey::Foo->add_icon('warning'); # /static/icons/Frey/Foo/warning.png
519
520 =cut
521
522 sub icon_path {
523 my ($self,$class,$variant) = @_;
524
525 sub icon_exists {
526 my $class = shift;
527 $class =~ s{::}{/}g;
528 $class .= "/$variant" if $variant;
529 my $icon_path = 'static/icons/' . $class . '.png';
530 return $icon_path if -e $icon_path;
531 return;
532 }
533
534 my $path = icon_exists( $class );
535 if ( ! $path ) {
536 my $super_class = $class;
537 while ( $super_class =~ s{::[^:]+$}{} && ! $path ) {
538 $path = icon_exists( $super_class ) unless $super_class eq 'Frey'; # don't default on Frey icon
539 }
540 }
541
542 if ( ! $path ) {
543 $self->TODO( "add icon for $class" . ( $variant ? " variant $variant" : '' ) );
544 return undef;
545 }
546
547 warn "# $class from $self icon_path $path" if $self->debug;
548 return $path;
549 }
550
551 sub add_icon {
552 my ($self,$variant) = @_;
553
554 my $class = $self->class if $self->can('class');
555 #$class ||= $self->title;
556 $class ||= ref($self);
557 my $icon_path = $self->icon_path( $class, $variant ) || return;
558
559 $icon_html .= qq|<link rel="icon" type="image/png" href="/$icon_path">|;
560 warn "# using icon $icon_path";
561
562 =for later
563
564 # FIXME http://en.wikipedia.org/wiki/Favicon suggest just rel="icon" but that doesn't seem to work!
565 my $ico_path = $icon_path;
566 $ico_path =~ s{png$}{ico};
567 if ( ! -e $ico_path ) {
568 system "convert $icon_path $ico_path";
569 warn "# convert $icon_path $ico_path : $@";
570 }
571 $icon_html .= qq|<link rel="shortcut icon" type="image/x-icon" href="/$ico_path">| if -e $ico_path;
572
573 =cut
574
575 }
576
577 my $warn_colors = {
578 '#' => '#444',
579 '##' => '#888',
580 };
581
582 my $multiline_markers = {
583 '(' => ')',
584 '{' => '}',
585 '[' => ']',
586 '"' => '"',
587 };
588
589 =for later
590
591 my $multiline_re = '[\\' . join('\\', keys %$multiline_markers ) . ']';
592 warn "## multiline markers ", dump( $multiline_markers ), " -> $multiline_re";
593
594 =cut
595
596 sub log_path {
597 $Frey::Bootstrap::log_path || die "no log_path?";
598 }
599
600 our $pwd = `pwd`;
601 chomp $pwd;
602
603 sub strip_full_path {
604 my ($self, $msg) = @_;
605 # Mojo seems to expand warn messages to full path which is annoying
606 $msg =~ s{/[^/]+/\.\./}{/}gs;
607 $msg =~ s{$pwd/*}{}gs;
608 return $msg;
609 }
610
611 our $last_log_pos = 0;
612 our $last_log_line = 0;
613
614 sub warnings_html {
615 my ($self,$level) = shift;
616 $level ||= $self->debug,
617 my $path = $self->log_path;
618
619 my $max = 30;
620 my $pos = 0;
621 my @warnings = ( '' x $max ); # XXX circualar buffer for 50 lines
622 my $line = $last_log_line;
623 my $multiline_end;
624
625 # XXX do we really want to do this every time?
626 my $css = qq|/* short css classes for levels */\n|;
627 my $level_to_class;
628 foreach ( keys %$warn_colors ) {
629 my $l = length($_);
630 my $class = 'l' . $l;
631 $css .= qq|.$class { color: $warn_colors->{$_} }\n|;
632 $level_to_class->{ $_ } = $class;
633 }
634 $self->add_css( $css );
635
636 open(my $log, '<', $path) || die "can't open $path: $!";
637 seek($log, $last_log_pos, 0) || warn "can't seek: $!";
638 while(<$log>) {
639 chomp;
640 $line++;
641
642 next if m{^\s+(Mojo|Class::MOP|Moose)::};
643
644 my $style = '';
645
646 =for filter
647
648 if ( $multiline_end ) {
649 if ( m{^\Q$multiline_end\E} || m{^\s.+\Q$multiline_end\E;$} ) {
650 # warn "## $line end of $multiline_end in '$_'\n";
651 undef $multiline_end;
652 } else {
653 # warn "## $line skipped\n";
654 }
655 } elsif ( m{^(#*)\s+} ) {
656 my $l = $1 ? length($1) : 0;
657 if ( $l > $level ) {
658 undef $multiline_end;
659 $multiline_end = $multiline_markers->{$1} if m{($multiline_re)$};
660 # warn "## $line start $1 .. $multiline_end level $l > $level for '$_'\n" if $multiline_end;
661 next;
662 }
663
664 =cut
665 if ( m{^(#*)} ) {
666
667 my $level = $1;
668 my $msg = $self->strip_full_path( $_ );
669
670 my $spacer = ' ';
671 my $real_msg = expand( $msg );
672 if ( length($real_msg) > $self->html_dump_width ) {
673
674 $real_msg = substr( $msg, 0, $self->html_dump_width );
675 $msg = unexpand( $real_msg );
676 $spacer = '&hellip;'
677 }
678
679 $msg = $self->html_escape( $msg );
680
681 if ( my $class = $level_to_class->{ $level } ) {
682 $msg = qq|<span class="$class">$msg</span>|;
683 }
684
685 #$msg .= $spacer . qq|<a target="editor" href="/editor+$path+$line" style="float: right;">$line</a>\n|;
686 $msg = qq|<a target="editor" href="/editor+$path+$line" style="float: right;">$line</a>$msg|
687 . ( $spacer ? $spacer : '' )
688 . "\n"; # XXX <pre> needs this
689
690 $warnings[ $pos++ % $max ] = $msg;
691 }
692 }
693 $last_log_pos = tell($log);
694 $last_log_line = $line;
695 warn "log has $line lines tell position $last_log_pos";
696 close($log) || die "can't close $path: $!";
697
698 my $size = -s $path;
699
700 my $warnings = join("",
701 map { $warnings[ ( $pos + $_ ) % $max ] || '' } 0 .. ( $max - 1 )
702 );
703
704 my $s = length($warnings);
705
706 return
707 # need to wrap editor link into span so we can have links in warnings
708 qq|<span class="frey-popup"><a target="editor" href="/editor+$path+$line" title="$path \| $size -> $s bytes \| $line -> $pos lines \| level $level">warn</a><code>|
709 . $self->html_links( $warnings )
710 . qq|</code></span>|
711 ;
712 }
713
714
715 =head2 backtrace
716
717 Show backtrace with links to editor
718
719 my @backtrace = $self->backtrace;
720
721 =cut
722
723 sub backtrace {
724 my ($self) = @_;
725
726 my @backtrace;
727 foreach ( 1 .. 5 ) { # 0 = backtrace
728 my (
729 $package,$path,$line
730 # subroutine hasargs
731 # wantarray evaltext is_require
732 # hints bitmask hinthash
733 ) = caller($_) or last;
734
735 push @backtrace,
736 qq|via "$package" at $path line $line|;
737 }
738 #warn "# backtrace: ", dump( @backtrace ) if @backtrace;
739 return @backtrace;
740 }
741
742 =head2 checkbox
743
744 Generate checkbox html markup from some attribute
745
746 my $html = $self->checkbox('attribute_name', $value);
747
748 =cut
749
750 sub checkbox {
751 my ($self,$name,$value) = @_;
752 my $checked = '';
753 my $all_checkboxes = eval { $self->$name };
754 warn "ERROR tried to get checkbox value for '$name' which is unknown: $@" if $@;
755 $all_checkboxes = [ $all_checkboxes ] unless ref($all_checkboxes) eq 'ARRAY'; # sigh, too chatty
756 $checked = ' checked' if grep { defined $_ && $_ eq $value } @$all_checkboxes;
757 warn "# checkbox $name $value $checked\t", $self->dump( $self->$name );
758 qq|<input name="$name" value="$value" type="checkbox"$checked>|;
759 }
760
761 =head2 strip
762
763 Strip whitespace around content
764
765 my $stripped = strip(' no more whitespace around this ');
766
767 =cut
768
769 sub strip {
770 my $t = shift;
771 $t =~ s{^\s+}{}gs;
772 $t =~ s{>\s+<}{><}gs;
773 $t =~ s{\s+$}{}gs;
774 return $t;
775 }
776
777 1;

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