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

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Revision 540 - (show annotations)
Wed Nov 26 18:02:38 2008 UTC (15 years, 4 months ago) by dpavlin
Original Path: trunk/lib/Frey/Web.pm
File size: 10030 byte(s)
extracted %INC dumper into own class
1 package Frey::Web;
2 use Moose::Role;
3
4 with 'Frey::Backtrace';
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 has 'head' => (
20 is => 'rw',
21 isa => 'ArrayRef[Str]',
22 default => sub { [ 'static/frey.css' ] },
23 );
24
25 has 'request_url' => (
26 is => 'rw',
27 isa => 'Uri', coerce => 1,
28 default => '/',
29 );
30
31 has 'title' => (
32 is => 'rw',
33 isa => 'Str',
34 lazy => 1,
35 default => sub {
36 my ($self) = @_;
37 ref($self);
38 },
39 );
40
41 has 'content_type' => (
42 is => 'rw',
43 isa => 'Str',
44 default => 'text/html',
45 documentation => 'Content-type header',
46 );
47
48 has 'dump_max_bytes' => (
49 is => 'rw',
50 isa => 'Int',
51 default => 4096,
52 documentation => 'Maximum dump size sent to browser before truncation',
53 );
54
55 has 'inline_smaller_than' => (
56 is => 'rw',
57 isa => 'Int',
58 default => 10240,
59 documentation => 'Inline JavaScript and CSS to reduce round-trips',
60 );
61
62 has 'chop_warning' => (
63 is => 'rw',
64 isa => 'Int',
65 default => 80,
66 documentation => 'Crop lines longer',
67 );
68
69 my %escape = ('<'=>'&lt;', '>'=>'&gt;', '&'=>'&amp;', '"'=>'&quot;');
70 my $escape_re = join '|' => keys %escape;
71
72 sub html_escape {
73 my ( $self, $html ) = @_;
74 $html =~ s/($escape_re)/$escape{$1}/g;
75 return $html;
76 }
77
78 sub html_dump {
79 my $self = shift;
80 $self->html_escape( dump( @_ ) );
81 }
82
83 sub dom2html {
84 # warn "## dom2html ",dump( @_ );
85 return Continuity::Widget::DomNode->create( @_ )->to_string;
86 }
87
88 sub _inline_path {
89 my ( $self, $path ) = @_;
90 -s $path < $self->inline_smaller_than;
91 }
92
93 sub _head_html {
94 my $self = shift;
95 my $out = '';
96 foreach my $path ( @{ $self->head } ) {
97 $path =~ s!^/!!;
98 if ( $path =~ m/\.js$/ ) {
99 $out .= $self->_inline_path( $path ) ?
100 qq|<!-- $path --><script type="text/javascript">\n| . read_file($path) . qq|\n</script>| :
101 qq|<script type="text/javascript" src="/$path"></script>|;
102 } elsif ( $path =~ m/\.css$/ ) {
103 $out .= $self->_inline_path( $path ) ?
104 qq|<!-- $path --><style type="text/css">\n| . read_file( $path ) . qq|\n</style>| :
105 qq|<link type="text/css" rel="stylesheet" href="/$path" media="screen">|;
106 } elsif ( $path =~ m{<.+>}s ) {
107 $out .= $path;
108 } else {
109 confess "don't know how to render $path";
110 }
111 $out .= "\n";
112 }
113 return $out;
114 }
115
116 =head2 add_head
117
118 $o->add_head( 'path/to/external.js' );
119
120 my $size = $o->add_head( 'path/to/external.css' );
121
122 $o->add_head( '<!-- html content -->' );
123
124 =cut
125
126 sub add_head {
127 my ( $self, $path ) = @_;
128 return if ! defined $path || $path eq '';
129 $path =~ s!^/!!;
130
131 if ( $path =~ m{<.*>}s ) {
132 push @{ $self->head }, $path;
133 } elsif ( -e $path ) {
134 if ( $path =~ m/\.(?:js|css)$/ ) {
135 push @{ $self->head }, $path;
136 } else {
137 confess "can't add_head( $path ) it's not js or css";
138 }
139 return -s $path;
140 } else {
141 confess "can't find $path: $!";
142 }
143
144 }
145
146 our $reload_counter = 0;
147
148
149 =head2 page
150
151 $self->page(
152 title => 'page title',
153 head => '<!-- optional head markup -->',
154 body => '<b>Page Body</b>',
155 );
156
157 =cut
158
159 our @status;
160 sub status { @status };
161
162 our $icon_html;
163
164 sub popup {
165 my ( $self, $name, $content, $full ) = @_;
166
167 if ( ref($content) ) {
168 $content = '<code>' . dump($content) . '</code>';
169 my $l = length($content);
170 $content = qq|<span>$l bytes</span>| if ! $full && $l > $self->dump_max_bytes;
171 } else {
172 $content = qq|<span>$content</span>|;
173 }
174
175 warn "## popup [$name] = ", length( $content ), " bytes" if $self->debug;
176 return qq|<span class="frey-popup">$name $content</span>\n|;
177 }
178
179 sub page {
180 my $self = shift;
181 my $a = {@_};
182
183 warn "## page ",dump($a);
184
185 $reload_counter++;
186
187 my $status_line = '';
188
189 unshift @status, { 'ClassBrowser' => Frey::ClassBrowser->new( usage_on_top => 0 )->as_markup };
190 # unshift @status, { 'Bookmarklets' => Frey::Bookmarklet->new->as_markup };
191 unshift @status, { 'INC' => Frey::INC->new->as_markup };
192
193 foreach my $part ( @status ) {
194 foreach my $name ( keys %$part ) {
195 $status_line .= $self->popup( $name, $part->{$name} );
196 }
197 }
198
199 my $url = $self->request_url;
200 $url =~ s{\?reload=\d+}{};
201
202 my $body = $a->{body};
203 $body ||= $self->as_markup if $self->can('as_markup');
204 if ( $self->content_type !~ m{html} ) {
205 warn "# return only $self body ", $self->content_type;
206 return $body
207 } elsif ( ! defined $body ) {
208 warn "# no body";
209 $body = '<!-- no body -->';
210 }
211
212 $status_line .= $self->warnings_html;
213
214 my ($exit,$description) = ('exit','stop server');
215 ($exit,$description) = ('restart','restart server')
216 if $ENV{FREY_RESTART}; # tune labels on exit link
217
218 my $right =
219 qq|
220 <span class="right">
221 <a title="reload $url" href="/reload$url">reload</a>
222 <a title="$description" href="/exit$url">$exit</a>
223 </span>
224 |;
225
226 my $info = Frey::SVK->info;
227 my $revision = Frey::SVK->info->{Revision} || '';
228 $revision = $1 if $info->{'Mirrored From'} =~ m{Rev\.\s+(\d+)};
229
230 $self->add_icon unless $icon_html;
231
232 my $html = join("\n",
233 qq|<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"><html><head>|,
234 $self->_head_html,
235 '<title>' . ( $self->title || $a->{title} || ref($self) ) . '</title>',
236 '<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">',
237 ( $icon_html || '<!-- no icon -->' ),
238 ( $a->{head} || '' ),
239 qq|
240 </head><body>
241 $body
242 <div class="frey-status-line">
243 <a href="/">Frey</a> $Frey::VERSION $revision
244 $status_line
245 $right
246 </div>
247 </body></html>
248 |,
249 );
250
251 warn "## >>> page ",length($html), " bytes\n" if $self->debug;
252
253 return $html;
254 }
255
256 =head2 editor
257
258 Create HTML editor link with optional line and title
259
260 my $html = $self->editor( $class, $line, $title );
261
262 =cut
263
264 sub editor {
265 my ( $self, $class, $line, $title ) = @_;
266 confess "need class" unless $class;
267 if ( ! defined $title ) {
268 $title = "edit $class";
269 $title .= " line $line" if $line;
270 }
271 $line ||= 1;
272 qq|<a target="editor" href="/editor+$class+$line"| .
273 ( $title ? qq| title="$title"| : '' ) .
274 qq|>$class</a>|;
275 }
276
277 =head2 editor_links
278
279 Create HTML links to editor for perl error message
280
281 my $html = $self->editor_links( $error )
282
283 =cut
284
285 sub editor_links {
286 my ( $self, $error ) = @_;
287
288 $error =~ s{at\s+(\S+)\s+line\s+(\d+)}
289 {at <a target="editor" href="/editor+$1+$2">$1</a> line $2}gsm;
290
291 $error =~ s{(via package ")([\w:]+)(")}
292 {$1<a target="editor" href="/editor+$2+1">$2</a>$3}gsm;
293
294 return $error;
295 }
296
297 sub error {
298 my $self = shift;
299 my $error = join(" ", @_);
300
301 my @backtrace = $self->backtrace;
302 $error .= "\n\t" . join( "\n\t", @backtrace ) if @backtrace;
303
304 warn "ERROR: $error\n";
305 return
306 qq|<pre class="frey-error">|
307 . $self->editor_links( $error ) .
308 qq|</pre>|
309 ;
310 }
311
312 sub add_status {
313 my ( $self, $data ) = @_;
314 push @status, $data;
315 }
316
317 sub clean_status {
318 @status = ();
319 $icon_html = '';
320 }
321
322 sub status_parts {
323 warn "## status parts ", dump( map { keys %$_ } @status );
324 }
325
326 sub DEMOLISH {
327 my ( $self ) = @_;
328 warn "## $self DEMOLISH status ", $#status + 1, " elements ", dump( map { keys %$_ } @status ) if @status;
329 }
330
331 =head2 add_icon
332
333 Frey::Foo->add_icon; # /static/icons/Frey/Foo.png
334 Frey::Foo->add_icon('warning'); # /static/icons/Frey/Foo/warning.png
335
336 =cut
337
338 sub icon_path {
339 my ($self,$class,$variant) = @_;
340 my $icon = $class;
341 $icon =~ s{::}{/}g;
342 $icon .= "/$variant" if $variant;
343 my $path = 'static/icons/' . $icon . '.png';
344 if ( -e $path ) {
345 warn "# $class from $self icon_path $path";
346 return $path;
347 } else {
348 warn "TODO: add $path icon for $class";
349 return undef;
350 }
351 }
352
353 sub add_icon {
354 my ($self,$variant) = @_;
355
356 my $class = ref($self);
357 $class = $self->class if $self->can('class');
358 my $icon_path = $self->icon_path( $class, $variant ) || return;
359
360 $icon_html .= qq|<link rel="icon" type="image/png" href="/$icon_path">|;
361 warn "# using icon $icon_path";
362
363 =for later
364
365 # FIXME http://en.wikipedia.org/wiki/Favicon suggest just rel="icon" but that doesn't seem to work!
366 my $ico_path = $icon_path;
367 $ico_path =~ s{png$}{ico};
368 if ( ! -e $ico_path ) {
369 system "convert $icon_path $ico_path";
370 warn "# convert $icon_path $ico_path : $@";
371 }
372 $icon_html .= qq|<link rel="shortcut icon" type="image/x-icon" href="/$ico_path">| if -e $ico_path;
373
374 =cut
375
376 }
377
378 my $warn_colors = {
379 '#' => '#444',
380 '##' => '#888',
381 };
382
383 my $multiline_markers = {
384 '(' => ')',
385 '{' => '}',
386 '[' => ']',
387 '"' => '"',
388 };
389
390 my $multiline_re = '[\\' . join('\\', keys %$multiline_markers ) . ']';
391 warn "## multiline markers ", dump( $multiline_markers ), " -> $multiline_re";
392
393 sub log_path {
394 $Frey::Bootstrap::log_path || warn "no log_path?";
395 }
396
397 sub warnings_html {
398 my ($self,$level) = shift;
399 $level ||= $self->debug,
400 my $path = $self->log_path;
401
402 my $warnings;
403 my $line = 0;
404 my $multiline_end;
405
406 open(my $log, '<', $path) || die "can't open $path: $!";
407 while(<$log>) {
408 chomp;
409 $line++;
410
411 my $style = '';
412
413 if ( $multiline_end ) {
414 if ( m{^\Q$multiline_end\E} || m{^\s.+\Q$multiline_end\E;$} ) {
415 # warn "## $line end of $multiline_end in '$_'\n";
416 undef $multiline_end;
417 } else {
418 # warn "## $line skipped\n";
419 }
420 } elsif ( m{^(#*)\s+} ) {
421 my $l = $1 ? length($1) : 0;
422 if ( $l > $level ) {
423 undef $multiline_end;
424 $multiline_end = $multiline_markers->{$1} if m{($multiline_re)$};
425 # warn "## $line start $1 .. $multiline_end level $l > $level for '$_'\n" if $multiline_end;
426 next;
427 }
428
429 $style = $warn_colors->{$1}
430 ? ' style="color:' . $warn_colors->{$1} . '"'
431 : '';
432
433 my $msg = $self->html_escape( $_ );
434 my $spacer = ' ';
435 if ( length($msg) > $self->chop_warning ) {
436 $msg = substr( $msg, 0, $self->chop_warning );
437 $spacer = '&hellip;'
438 }
439 $msg =~ s{^\s}{&nbsp;}g;
440 $warnings .= qq|<tt$style>$msg</tt>$spacer<small><a target="editor" href="/editor+$path+$line">+$line</a></small><br/>|;
441 # FIXME <tt> should be <code> but CSS hates me
442 }
443 }
444 close($log) || die "can't close $path: $!";
445
446 return
447 qq|<span class="frey-popup"><a target="editor" href="/editor+$path+$line" title="open $path level $level">warn</a><span>|
448 . $self->editor_links( $warnings )
449 . qq|</span></span>|
450 ;
451 }
452
453 1;

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