/[Frey]/branches/zimbardo/lib/Frey/Web.pm
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Contents of /branches/zimbardo/lib/Frey/Web.pm

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Revision 629 - (show annotations)
Sat Nov 29 22:45:22 2008 UTC (15 years, 4 months ago) by dpavlin
Original Path: trunk/lib/Frey/Web.pm
File size: 13446 byte(s)
HTTP::Engine server skeleton
1 package Frey::Web;
2 use Moose::Role;
3
4 with 'Frey::Session';
5
6 use Frey::Types;
7
8 #use Continuity::Widget::DomNode;
9 use Data::Dump qw/dump/;
10 use Carp qw/confess cluck/;
11 use File::Slurp;
12
13 use Frey::Bookmarklet;
14 use Frey::ClassBrowser;
15 use Frey::INC;
16
17 use Frey::SVK;
18
19 use Text::Tabs; # expand, unexpand
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 cluck "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 => 120,
71 );
72
73 my %escape = ('<'=>'&lt;', '>'=>'&gt;', '&'=>'&amp;', '"'=>'&quot;');
74 my $escape_re = join '|' => keys %escape;
75
76 sub html_escape {
77 my ( $self, $html ) = @_;
78 $html =~ s/($escape_re)/$escape{$1}/g;
79 return $html;
80 }
81
82 sub html_dump {
83 my ( $self, $dump ) = @_;
84 $dump = dump( $dump ) if ref($dump);
85 my $width = $self->html_dump_width;
86 $dump =~ s{(\n[^\n]{$width})([^\n]+?)([^\n]{5})}{\n$1...$3}gs;
87 $dump = $self->html_escape( $dump );
88 $dump =~ s{\Q...\E}{&hellip;}gs;
89 # $dump =~ $self->editor_links( $dump ); # FIXME include this
90 return "<code>$dump</code>";
91 }
92
93 sub popup { my $self = shift; $self->popup_dropdown('popup', @_); }
94 sub dropdown { my $self = shift; $self->popup_dropdown('dropdown', @_); }
95
96 our $re_html = qr{<(?:!--.+?--|(\w+).+?/\1|[^>]+/)>}s; # relaxed html check for one semi-valid tag
97
98 sub popup_dropdown {
99 my ( $self, $type, $name, $content, $full ) = @_;
100
101 $content = $self->html_dump($content) if ref $content;
102
103 $content = qq|<span>$content</span>| unless $content =~ m{^\s*<(span|a|code).+?/\1>\s*};
104
105 $content =~ s{<span>(<code>[^<]+</code>)</span>}{$1} && $self->TODO("code wrapped in span");
106
107 warn "## $type [$name] = ", length( $content ), " bytes"; # if $self->debug; # FIXME
108
109 if ( $name =~ m{::} && $name !~ $re_html ) {
110 return qq|<a class="frey-$type" target="$name" href="/$name">$name $content</a>\n|;
111 } elsif ( $name =~ s{^\s*(<a)\s+}{$1 class="frey-$type"} ) {
112 return qq|$name $content\n|;
113 } else {
114 return qq|<span class="frey-$type">$name $content</span>\n|;
115 }
116 }
117
118 sub _inline_path {
119 my ( $self, $path ) = @_;
120 -s $path < $self->inline_smaller_than;
121 }
122
123 sub _head_html {
124 my $self = shift;
125 my $out = '';
126 foreach my $path ( @head ) {
127 $path =~ s!^/!!;
128 if ( $path =~ m/\.js$/ ) {
129 $out .= $self->_inline_path( $path ) ?
130 qq|<script type="text/javascript">\n/* inline $path */\n\n| . read_file($path) . qq|\n</script>| :
131 qq|<script type="text/javascript" src="/$path"></script>|;
132 } elsif ( $path =~ m/\.css$/ ) {
133 $out .= $self->_inline_path( $path ) ?
134 qq|<style type="text/css">\n/* inline $path */\n\n| . read_file( $path ) . qq|\n</style>| :
135 qq|<link type="text/css" rel="stylesheet" href="/$path" media="screen">|;
136 } elsif ( $path =~ m{<.+>}s ) {
137 $out .= $path;
138 } else {
139 confess "don't know how to render $path";
140 }
141 $out .= "\n";
142 }
143 return $out;
144 }
145
146 =head2 add_head
147
148 $o->add_head( 'path/to/external.js' );
149
150 my $size = $o->add_head( 'path/to/external.css' );
151
152 $o->add_head( '<!-- html content -->' );
153
154 =cut
155
156 sub add_head {
157 my ( $self, $path ) = @_;
158 return if ! defined $path || $path eq '';
159 $path =~ s!^/!!;
160
161 if ( $path =~ $re_html ) {
162 push @head, $path;
163 } elsif ( -e $path ) {
164 if ( $path =~ m/\.(?:js|css)$/ ) {
165 push @head, $path;
166 } else {
167 confess "can't add_head( $path ) it's not js or css";
168 }
169 return -s $path;
170 } else {
171 confess "can't find $path: $!";
172 }
173
174 }
175
176 sub add_css {
177 my ($self,$css) = @_;
178 my ( $package, $path, $line ) = caller;
179 $self->add_head( qq|
180 <style type="text/css">
181 /* via $package at $path line $line */
182 $css
183 </style>
184 | );
185 }
186
187 our $reload_counter = 0;
188
189
190 =head2 page
191
192 $self->page(
193 title => 'page title',
194 head => '<!-- optional head markup -->',
195 body => '<b>Page Body</b>',
196 );
197
198 =cut
199
200 our @status;
201 sub status { @status };
202
203 our $icon_html;
204
205 sub page {
206 my $self = shift;
207 my $a = {@_};
208
209 warn "## page ",dump($a);
210
211 $reload_counter++;
212
213 my $status_line = '';
214
215 foreach my $part ( @status ) {
216 foreach my $name ( keys %$part ) {
217 $status_line .= $self->popup( $name, $part->{$name} );
218 }
219 }
220
221 my $url = $self->request_url;
222 $url =~ s{\?reload=\d+}{};
223
224 my $body = $a->{body};
225 if ( ! $body ) {
226 my $run = $a->{run} || 'as_markup';
227 warn "# no body, invoke $self->$run on ", ref($self);
228 $body = $self->$run;
229 }
230 if ( $self->content_type !~ m{html} ) {
231 warn "# return only $self body ", $self->content_type;
232 return $body
233 } elsif ( ! defined $body ) {
234 warn "# no body";
235 $body = '<!-- no body -->';
236 }
237
238 $status_line .= $self->warnings_html;
239
240 my ($exit,$description) = ('exit','stop server');
241 ($exit,$description) = ('restart','restart server')
242 if $ENV{FREY_RESTART}; # tune labels on exit link
243
244 my $right =
245 qq|
246 <span class="right">
247 <a title="reload $url" href="/reload$url">reload</a>
248 <a title="$description" href="/exit$url">$exit</a>
249 </span>
250 |;
251
252 my $svk = Frey::SVK->new;
253 my $info = $svk->info;
254 my $revision = $svk->info->{Revision} || '';
255 $revision = $1 if $info->{'Mirrored From'} =~ m{Rev\.\s+(\d+)};
256
257 $self->add_icon unless $icon_html;
258
259 my $html = join("\n",
260 qq|<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"><html><head>|,
261 $self->_head_html,
262 '<title>' . ( $self->title || $a->{title} || ref($self) ) . '</title>',
263 '<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">',
264 ( $icon_html || '<!-- no icon -->' ),
265 ( $a->{head} || '' ),
266 qq|
267 </head><body>
268 $body
269 <div class="frey-status-line">
270 <a href="/">Frey</a> $Frey::VERSION $revision
271 $status_line
272 $right
273 </div>
274 </body></html>
275 |,
276 );
277
278 warn "## >>> page ",length($html), " bytes\n" if $self->debug;
279
280 return $html;
281 }
282
283 =head2 editor
284
285 Create HTML editor link with optional line and title
286
287 my $html = $self->editor( $class, $line, $title );
288
289 =cut
290
291 sub editor {
292 my ( $self, $class, $line, $title ) = @_;
293 confess "need class" unless $class;
294 if ( ! defined $title ) {
295 $title = "edit $class";
296 $title .= " line $line" if $line;
297 }
298 $line ||= 1;
299 qq|<a target="editor" href="/editor+$class+$line"| .
300 ( $title ? qq| title="$title"| : '' ) .
301 qq|>$class</a>|;
302 }
303
304 =head2 editor_links
305
306 Create HTML links to editor for perl error message
307
308 my $html = $self->editor_links( $error )
309
310 =cut
311
312 sub editor_links {
313 my ( $self, $error ) = @_;
314
315 # $error =~ s[(bless\({\s+.+?\s+},\s+)("[^"]+")(\) at)][<span class="frey-dropdown">$1<code>$2</code>$3</span>]gs; # FIXME insert bless hiding back
316
317 $error =~ s{at\s+(\S+)\s+line\s+(\d+)}
318 {at <a target="editor" href="/editor+$1+$2">$1</a> line $2}gsm;
319
320 $error =~ s{(via (?:package) "?)([\w:]+)("?)}
321 {$1<a target="editor" href="/editor+$2+1">$2</a>$3}gsm;
322
323 return $error;
324 }
325
326 sub error {
327 my $self = shift;
328 my $error = join(" ", @_);
329
330 my @backtrace = $self->backtrace;
331 $error .= "\n\t" . join( "\n\t", @backtrace ) if @backtrace;
332
333 warn "ERROR: $error\n";
334 return
335 qq|<pre class="frey-error">|
336 . $self->editor_links( $error ) .
337 qq|</pre>|
338 ;
339 }
340
341 =head1 Status line
342
343 =head2 add_status
344
345 $self->add_status( { name => { some => 'data' } } );
346
347 $self->add_status( "append to last status popup" );
348
349 =cut
350
351 sub add_status {
352 my ( $self, $data ) = @_;
353 push @status, { 'X' => [ $self->backtrace ] };
354 if ( ref($data) ) {
355 push @status, $data;
356 } else {
357 if ( defined $status[ $#status ] ) {
358 $status[ $#status ]->{ '+' } = $data;
359 } else {
360 push @status, { '+' => $data };
361 }
362 }
363 }
364
365 =head2 clean_status
366
367 Called at beginning of each request
368
369 $self->clean_status;
370
371 =cut
372
373 sub clean_status {
374 my ($self) = shift;
375 @head = ( 'static/frey.css' );
376 my $params = { request_url => $self->request_url };
377 @status = (
378 { 'ClassBrowser' => Frey::ClassBrowser->new( %$params, usage_on_top => 0 )->as_markup },
379 { 'Bookmarklets' => Frey::Bookmarklet->new( %$params )->as_markup },
380 { 'INC' => Frey::INC->new( %$params )->as_markup },
381 );
382 $icon_html = '';
383 }
384
385 =head2 status_parts
386
387 Dump all status line parts
388
389 $self->status_parts
390
391 =cut
392
393 sub status_parts {
394 warn "## status parts ", dump( map { keys %$_ } @status );
395 }
396
397 =for debug
398
399 sub DEMOLISH {
400 my ( $self ) = @_;
401 warn "## $self DEMOLISH status ", $#status + 1, " elements ", dump( map { keys %$_ } @status ) if @status;
402 }
403
404 =cut
405
406 =head2 add_icon
407
408 Frey::Foo->add_icon; # /static/icons/Frey/Foo.png
409 Frey::Foo->add_icon('warning'); # /static/icons/Frey/Foo/warning.png
410
411 =cut
412
413 sub icon_path {
414 my ($self,$class,$variant) = @_;
415 my $icon = $class;
416 $icon =~ s{::}{/}g;
417 $icon .= "/$variant" if $variant;
418 my $path = 'static/icons/' . $icon . '.png';
419 if ( -e $path ) {
420 warn "# $class from $self icon_path $path" if $self->debug;
421 return $path;
422 } else {
423 $self->TODO( "add $path icon for $class" );
424 return undef;
425 }
426 }
427
428 sub add_icon {
429 my ($self,$variant) = @_;
430
431 my $class = ref($self);
432 $class = $self->class if $self->can('class');
433 my $icon_path = $self->icon_path( $class, $variant ) || return;
434
435 $icon_html .= qq|<link rel="icon" type="image/png" href="/$icon_path">|;
436 warn "# using icon $icon_path";
437
438 =for later
439
440 # FIXME http://en.wikipedia.org/wiki/Favicon suggest just rel="icon" but that doesn't seem to work!
441 my $ico_path = $icon_path;
442 $ico_path =~ s{png$}{ico};
443 if ( ! -e $ico_path ) {
444 system "convert $icon_path $ico_path";
445 warn "# convert $icon_path $ico_path : $@";
446 }
447 $icon_html .= qq|<link rel="shortcut icon" type="image/x-icon" href="/$ico_path">| if -e $ico_path;
448
449 =cut
450
451 }
452
453 my $warn_colors = {
454 '#' => '#444',
455 '##' => '#888',
456 };
457
458 my $multiline_markers = {
459 '(' => ')',
460 '{' => '}',
461 '[' => ']',
462 '"' => '"',
463 };
464
465 my $multiline_re = '[\\' . join('\\', keys %$multiline_markers ) . ']';
466 warn "## multiline markers ", dump( $multiline_markers ), " -> $multiline_re";
467
468 sub log_path {
469 $Frey::Bootstrap::log_path || die "no log_path?";
470 }
471
472 sub warnings_html {
473 my ($self,$level) = shift;
474 $level ||= $self->debug,
475 my $path = $self->log_path;
476
477 my $max = 30;
478 my $pos = 0;
479 my @warnings = ( '' x $max ); # XXX circualar buffer for 50 lines
480 my $line = 0;
481 my $multiline_end;
482
483 # XXX do we really want to do this every time?
484 my $css = qq|/* short css classes for levels */\n|;
485 my $level_to_class;
486 foreach ( keys %$warn_colors ) {
487 my $l = length($_);
488 my $class = 'l' . $l;
489 $css .= qq|.$class { color: $warn_colors->{$_} }\n|;
490 $level_to_class->{ $_ } = $class;
491 }
492 $self->add_css( $css );
493
494 open(my $log, '<', $path) || die "can't open $path: $!";
495 while(<$log>) {
496 chomp;
497 $line++;
498
499 my $style = '';
500
501 =for filter
502
503 if ( $multiline_end ) {
504 if ( m{^\Q$multiline_end\E} || m{^\s.+\Q$multiline_end\E;$} ) {
505 # warn "## $line end of $multiline_end in '$_'\n";
506 undef $multiline_end;
507 } else {
508 # warn "## $line skipped\n";
509 }
510 } elsif ( m{^(#*)\s+} ) {
511 my $l = $1 ? length($1) : 0;
512 if ( $l > $level ) {
513 undef $multiline_end;
514 $multiline_end = $multiline_markers->{$1} if m{($multiline_re)$};
515 # warn "## $line start $1 .. $multiline_end level $l > $level for '$_'\n" if $multiline_end;
516 next;
517 }
518
519 =cut
520 if ( m{^(#*)} ) {
521
522 my $level = $1;
523 my $msg = $_;
524
525 my $spacer = ' ';
526 my $real_msg = expand( $msg );
527 if ( length($real_msg) > $self->html_dump_width ) {
528
529 $real_msg = substr( $msg, 0, $self->html_dump_width );
530 $msg = unexpand( $real_msg );
531 $spacer = '&hellip;'
532 }
533
534 $msg = $self->html_escape( $msg );
535
536 if ( my $class = $level_to_class->{ $level } ) {
537 $msg = qq|<span class="$class">$msg</span>|;
538 }
539
540 #$msg .= $spacer . qq|<a target="editor" href="/editor+$path+$line" style="float: right;">$line</a>\n|;
541 $msg = qq|<a target="editor" href="/editor+$path+$line" style="float: right;">$line</a>$msg|
542 . ( $spacer ? $spacer : '' )
543 . "\n"; # XXX <pre> needs this
544
545 $warnings[ $pos++ % $max ] = $msg;
546 }
547 }
548 warn "log has $line lines tell position ",tell($log);
549 close($log) || die "can't close $path: $!";
550
551 my $size = -s $path;
552
553 my $warnings = join("",
554 map { $warnings[ ( $pos + $_ ) % $max ] || '' } 0 .. ( $max - 1 )
555 );
556
557 my $s = length($warnings);
558
559 return
560 # need to wrap editor link into span so we can have links in warnings
561 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>|
562 . $self->editor_links( $warnings )
563 . qq|</code></span></a>|
564 ;
565 }
566
567
568 =head2 backtrace
569
570 Show backtrace with links to editor
571
572 my @backtrace = $self->backtrace;
573
574 =cut
575
576 sub backtrace {
577 my ($self) = @_;
578
579 my @backtrace;
580 foreach ( 0 .. 5 ) {
581 my (
582 $package,$path,$line
583 # subroutine hasargs
584 # wantarray evaltext is_require
585 # hints bitmask hinthash
586 ) = caller($_) or last;
587
588 push @backtrace,
589 qq|via $package at $path line $line|;
590 }
591 #warn "# backtrace: ", dump( @backtrace ) if @backtrace;
592 return @backtrace;
593 }
594
595 1;

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