1
|
|
|
<?php |
2
|
|
|
# |
3
|
|
|
# Markdown Extra - A text-to-HTML conversion tool for web writers |
4
|
|
|
# |
5
|
|
|
# PHP Markdown & Extra |
6
|
|
|
# Copyright (c) 2004-2008 Michel Fortin |
7
|
|
|
# <http://www.michelf.com/projects/php-markdown/> |
8
|
|
|
# |
9
|
|
|
# Original Markdown |
10
|
|
|
# Copyright (c) 2004-2006 John Gruber |
11
|
|
|
# <http://daringfireball.net/projects/markdown/> |
12
|
|
|
# |
13
|
|
|
|
14
|
|
|
|
15
|
|
|
define( 'MARKDOWN_VERSION', "1.0.1m" ); # Sat 21 Jun 2008 |
16
|
|
|
define( 'MARKDOWNEXTRA_VERSION', "1.2.3" ); # Wed 31 Dec 2008 |
17
|
|
|
|
18
|
|
|
|
19
|
|
|
# |
20
|
|
|
# Global default settings: |
21
|
|
|
# |
22
|
|
|
|
23
|
|
|
# Change to ">" for HTML output |
24
|
|
|
@define( 'MARKDOWN_EMPTY_ELEMENT_SUFFIX', " />"); |
|
|
|
|
25
|
|
|
|
26
|
|
|
# Define the width of a tab for code blocks. |
27
|
|
|
@define( 'MARKDOWN_TAB_WIDTH', 4 ); |
|
|
|
|
28
|
|
|
|
29
|
|
|
# Optional title attribute for footnote links and backlinks. |
30
|
|
|
@define( 'MARKDOWN_FN_LINK_TITLE', "" ); |
|
|
|
|
31
|
|
|
@define( 'MARKDOWN_FN_BACKLINK_TITLE', "" ); |
|
|
|
|
32
|
|
|
|
33
|
|
|
# Optional class attribute for footnote links and backlinks. |
34
|
|
|
@define( 'MARKDOWN_FN_LINK_CLASS', "" ); |
|
|
|
|
35
|
|
|
@define( 'MARKDOWN_FN_BACKLINK_CLASS', "" ); |
|
|
|
|
36
|
|
|
|
37
|
|
|
|
38
|
|
|
# |
39
|
|
|
# WordPress settings: |
40
|
|
|
# |
41
|
|
|
|
42
|
|
|
# Change to false to remove Markdown from posts and/or comments. |
43
|
|
|
@define( 'MARKDOWN_WP_POSTS', true ); |
|
|
|
|
44
|
|
|
@define( 'MARKDOWN_WP_COMMENTS', true ); |
|
|
|
|
45
|
|
|
|
46
|
|
|
|
47
|
|
|
|
48
|
|
|
### Standard Function Interface ### |
49
|
|
|
|
50
|
|
|
@define( 'MARKDOWN_PARSER_CLASS', 'MarkdownExtra_Parser' ); |
|
|
|
|
51
|
|
|
|
52
|
|
|
function Markdown($text) { |
|
|
|
|
53
|
|
|
# |
54
|
|
|
# Initialize the parser and return the result of its transform method. |
55
|
|
|
# |
56
|
|
|
# Setup static parser variable. |
57
|
|
|
static $parser; |
58
|
|
|
if (!isset($parser)) { |
59
|
|
|
$parser_class = MARKDOWN_PARSER_CLASS; |
60
|
|
|
$parser = new $parser_class; |
61
|
|
|
} |
62
|
|
|
|
63
|
|
|
# Transform text using parser. |
64
|
|
|
return $parser->transform($text); |
65
|
|
|
} |
66
|
|
|
|
67
|
|
|
|
68
|
|
|
### WordPress Plugin Interface ### |
69
|
|
|
|
70
|
|
|
/* |
71
|
|
|
Plugin Name: Markdown Extra |
72
|
|
|
Plugin URI: http://www.michelf.com/projects/php-markdown/ |
73
|
|
|
Description: <a href="http://daringfireball.net/projects/markdown/syntax">Markdown syntax</a> allows you to write using an easy-to-read, easy-to-write plain text format. Based on the original Perl version by <a href="http://daringfireball.net/">John Gruber</a>. <a href="http://www.michelf.com/projects/php-markdown/">More...</a> |
74
|
|
|
Version: 1.2.2 |
75
|
|
|
Author: Michel Fortin |
76
|
|
|
Author URI: http://www.michelf.com/ |
77
|
|
|
*/ |
78
|
|
|
|
79
|
|
|
if (isset($wp_version)) { |
80
|
|
|
# More details about how it works here: |
81
|
|
|
# <http://www.michelf.com/weblog/2005/wordpress-text-flow-vs-markdown/> |
82
|
|
|
|
83
|
|
|
# Post content and excerpts |
84
|
|
|
# - Remove WordPress paragraph generator. |
85
|
|
|
# - Run Markdown on excerpt, then remove all tags. |
86
|
|
|
# - Add paragraph tag around the excerpt, but remove it for the excerpt rss. |
87
|
|
|
if (MARKDOWN_WP_POSTS) { |
88
|
|
|
remove_filter('the_content', 'wpautop'); |
89
|
|
|
remove_filter('the_content_rss', 'wpautop'); |
90
|
|
|
remove_filter('the_excerpt', 'wpautop'); |
91
|
|
|
add_filter('the_content', 'mdwp_MarkdownPost', 6); |
92
|
|
|
add_filter('the_content_rss', 'mdwp_MarkdownPost', 6); |
93
|
|
|
add_filter('get_the_excerpt', 'mdwp_MarkdownPost', 6); |
94
|
|
|
add_filter('get_the_excerpt', 'trim', 7); |
95
|
|
|
add_filter('the_excerpt', 'mdwp_add_p'); |
96
|
|
|
add_filter('the_excerpt_rss', 'mdwp_strip_p'); |
97
|
|
|
|
98
|
|
|
remove_filter('content_save_pre', 'balanceTags', 50); |
99
|
|
|
remove_filter('excerpt_save_pre', 'balanceTags', 50); |
100
|
|
|
add_filter('the_content', 'balanceTags', 50); |
101
|
|
|
add_filter('get_the_excerpt', 'balanceTags', 9); |
102
|
|
|
} |
103
|
|
|
|
104
|
|
|
# Add a footnote id prefix to posts when inside a loop. |
105
|
|
|
function mdwp_MarkdownPost($text) { |
|
|
|
|
106
|
|
|
static $parser; |
107
|
|
|
if (!$parser) { |
108
|
|
|
$parser_class = MARKDOWN_PARSER_CLASS; |
109
|
|
|
$parser = new $parser_class; |
110
|
|
|
} |
111
|
|
|
if (is_single() || is_page() || is_feed()) { |
112
|
|
|
$parser->fn_id_prefix = ""; |
113
|
|
|
} else { |
114
|
|
|
$parser->fn_id_prefix = get_the_ID() . "."; |
115
|
|
|
} |
116
|
|
|
return $parser->transform($text); |
117
|
|
|
} |
118
|
|
|
|
119
|
|
|
# Comments |
120
|
|
|
# - Remove WordPress paragraph generator. |
121
|
|
|
# - Remove WordPress auto-link generator. |
122
|
|
|
# - Scramble important tags before passing them to the kses filter. |
123
|
|
|
# - Run Markdown on excerpt then remove paragraph tags. |
124
|
|
|
if (MARKDOWN_WP_COMMENTS) { |
125
|
|
|
remove_filter('comment_text', 'wpautop', 30); |
126
|
|
|
remove_filter('comment_text', 'make_clickable'); |
127
|
|
|
add_filter('pre_comment_content', 'Markdown', 6); |
128
|
|
|
add_filter('pre_comment_content', 'mdwp_hide_tags', 8); |
129
|
|
|
add_filter('pre_comment_content', 'mdwp_show_tags', 12); |
130
|
|
|
add_filter('get_comment_text', 'Markdown', 6); |
131
|
|
|
add_filter('get_comment_excerpt', 'Markdown', 6); |
132
|
|
|
add_filter('get_comment_excerpt', 'mdwp_strip_p', 7); |
133
|
|
|
|
134
|
|
|
global $mdwp_hidden_tags, $mdwp_placeholders; |
135
|
|
|
$mdwp_hidden_tags = explode(' ', |
136
|
|
|
'<p> </p> <pre> </pre> <ol> </ol> <ul> </ul> <li> </li>'); |
137
|
|
|
$mdwp_placeholders = explode(' ', str_rot13( |
138
|
|
|
'pEj07ZbbBZ U1kqgh4w4p pre2zmeN6K QTi31t9pre ol0MP1jzJR '. |
139
|
|
|
'ML5IjmbRol ulANi1NsGY J7zRLJqPul liA8ctl16T K9nhooUHli')); |
140
|
|
|
} |
141
|
|
|
|
142
|
|
|
function mdwp_add_p($text) { |
|
|
|
|
143
|
|
|
if (!preg_match('{^$|^<(p|ul|ol|dl|pre|blockquote)>}i', $text)) { |
144
|
|
|
$text = '<p>'.$text.'</p>'; |
145
|
|
|
$text = preg_replace('{\n{2,}}', "</p>\n\n<p>", $text); |
146
|
|
|
} |
147
|
|
|
return $text; |
148
|
|
|
} |
149
|
|
|
|
150
|
|
|
function mdwp_strip_p($t) { return preg_replace('{</?p>}i', '', $t); } |
|
|
|
|
151
|
|
|
|
152
|
|
|
function mdwp_hide_tags($text) { |
|
|
|
|
153
|
|
|
global $mdwp_hidden_tags, $mdwp_placeholders; |
154
|
|
|
return str_replace($mdwp_hidden_tags, $mdwp_placeholders, $text); |
155
|
|
|
} |
156
|
|
|
function mdwp_show_tags($text) { |
|
|
|
|
157
|
|
|
global $mdwp_hidden_tags, $mdwp_placeholders; |
158
|
|
|
return str_replace($mdwp_placeholders, $mdwp_hidden_tags, $text); |
159
|
|
|
} |
160
|
|
|
} |
161
|
|
|
|
162
|
|
|
|
163
|
|
|
### bBlog Plugin Info ### |
164
|
|
|
|
165
|
|
|
function identify_modifier_markdown() { |
166
|
|
|
return array( |
167
|
|
|
'name' => 'markdown', |
168
|
|
|
'type' => 'modifier', |
169
|
|
|
'nicename' => 'PHP Markdown Extra', |
170
|
|
|
'description' => 'A text-to-HTML conversion tool for web writers', |
171
|
|
|
'authors' => 'Michel Fortin and John Gruber', |
172
|
|
|
'licence' => 'GPL', |
173
|
|
|
'version' => MARKDOWNEXTRA_VERSION, |
174
|
|
|
'help' => '<a href="http://daringfireball.net/projects/markdown/syntax">Markdown syntax</a> allows you to write using an easy-to-read, easy-to-write plain text format. Based on the original Perl version by <a href="http://daringfireball.net/">John Gruber</a>. <a href="http://www.michelf.com/projects/php-markdown/">More...</a>', |
175
|
|
|
); |
176
|
|
|
} |
177
|
|
|
|
178
|
|
|
|
179
|
|
|
### Smarty Modifier Interface ### |
180
|
|
|
|
181
|
|
|
function smarty_modifier_markdown($text) { |
|
|
|
|
182
|
|
|
return Markdown($text); |
183
|
|
|
} |
184
|
|
|
|
185
|
|
|
|
186
|
|
|
### Textile Compatibility Mode ### |
187
|
|
|
|
188
|
|
|
# Rename this file to "classTextile.php" and it can replace Textile everywhere. |
189
|
|
|
|
190
|
|
|
if (strcasecmp(substr(__FILE__, -16), "classTextile.php") == 0) { |
191
|
|
|
# Try to include PHP SmartyPants. Should be in the same directory. |
192
|
|
|
@include_once 'smartypants.php'; |
|
|
|
|
193
|
|
|
# Fake Textile class. It calls Markdown instead. |
194
|
|
|
class Textile { |
195
|
|
|
function TextileThis($text, $lite='', $encode='') { |
|
|
|
|
196
|
|
|
if ($lite == '' && $encode == '') $text = Markdown($text); |
197
|
|
|
if (function_exists('SmartyPants')) $text = SmartyPants($text); |
198
|
|
|
return $text; |
199
|
|
|
} |
200
|
|
|
# Fake restricted version: restrictions are not supported for now. |
201
|
|
|
function TextileRestricted($text, $lite='', $noimage='') { |
|
|
|
|
202
|
|
|
return $this->TextileThis($text, $lite); |
203
|
|
|
} |
204
|
|
|
# Workaround to ensure compatibility with TextPattern 4.0.3. |
205
|
|
|
function blockLite($text) { return $text; } |
|
|
|
|
206
|
|
|
} |
207
|
|
|
} |
208
|
|
|
|
209
|
|
|
|
210
|
|
|
|
211
|
|
|
# |
212
|
|
|
# Markdown Parser Class |
213
|
|
|
# |
214
|
|
|
|
215
|
|
|
class Markdown_Parser { |
216
|
|
|
|
217
|
|
|
# Regex to match balanced [brackets]. |
218
|
|
|
# Needed to insert a maximum bracked depth while converting to PHP. |
219
|
|
|
var $nested_brackets_depth = 6; |
|
|
|
|
220
|
|
|
var $nested_brackets_re; |
221
|
|
|
|
222
|
|
|
var $nested_url_parenthesis_depth = 4; |
|
|
|
|
223
|
|
|
var $nested_url_parenthesis_re; |
|
|
|
|
224
|
|
|
|
225
|
|
|
# Table of hash values for escaped characters: |
226
|
|
|
var $escape_chars = '\`*_{}[]()>#+-.!'; |
227
|
|
|
var $escape_chars_re; |
228
|
|
|
|
229
|
|
|
# Change to ">" for HTML output. |
230
|
|
|
var $empty_element_suffix = MARKDOWN_EMPTY_ELEMENT_SUFFIX; |
231
|
|
|
var $tab_width = MARKDOWN_TAB_WIDTH; |
232
|
|
|
|
233
|
|
|
# Change to `true` to disallow markup or entities. |
234
|
|
|
var $no_markup = false; |
235
|
|
|
var $no_entities = false; |
236
|
|
|
|
237
|
|
|
# Predefined urls and titles for reference links and images. |
238
|
|
|
var $predef_urls = array(); |
239
|
|
|
var $predef_titles = array(); |
240
|
|
|
|
241
|
|
|
|
242
|
|
|
function Markdown_Parser() { |
|
|
|
|
243
|
|
|
# |
244
|
|
|
# Constructor function. Initialize appropriate member variables. |
245
|
|
|
# |
246
|
|
|
$this->_initDetab(); |
247
|
|
|
$this->prepareItalicsAndBold(); |
248
|
|
|
|
249
|
|
|
$this->nested_brackets_re = |
250
|
|
|
str_repeat('(?>[^\[\]]+|\[', $this->nested_brackets_depth). |
251
|
|
|
str_repeat('\])*', $this->nested_brackets_depth); |
252
|
|
|
|
253
|
|
|
$this->nested_url_parenthesis_re = |
254
|
|
|
str_repeat('(?>[^()\s]+|\(', $this->nested_url_parenthesis_depth). |
255
|
|
|
str_repeat('(?>\)))*', $this->nested_url_parenthesis_depth); |
256
|
|
|
|
257
|
|
|
$this->escape_chars_re = '['.preg_quote($this->escape_chars).']'; |
258
|
|
|
|
259
|
|
|
# Sort document, block, and span gamut in ascendent priority order. |
260
|
|
|
asort($this->document_gamut); |
261
|
|
|
asort($this->block_gamut); |
262
|
|
|
asort($this->span_gamut); |
263
|
|
|
} |
264
|
|
|
|
265
|
|
|
|
266
|
|
|
# Internal hashes used during transformation. |
267
|
|
|
var $urls = array(); |
268
|
|
|
var $titles = array(); |
269
|
|
|
var $html_hashes = array(); |
270
|
|
|
|
271
|
|
|
# Status flag to avoid invalid nesting. |
272
|
|
|
var $in_anchor = false; |
273
|
|
|
|
274
|
|
|
|
275
|
|
|
function setup() { |
|
|
|
|
276
|
|
|
# |
277
|
|
|
# Called before the transformation process starts to setup parser |
278
|
|
|
# states. |
279
|
|
|
# |
280
|
|
|
# Clear global hashes. |
281
|
|
|
$this->urls = $this->predef_urls; |
282
|
|
|
$this->titles = $this->predef_titles; |
283
|
|
|
$this->html_hashes = array(); |
284
|
|
|
|
285
|
|
|
$in_anchor = false; |
|
|
|
|
286
|
|
|
} |
287
|
|
|
|
288
|
|
|
function teardown() { |
|
|
|
|
289
|
|
|
# |
290
|
|
|
# Called after the transformation process to clear any variable |
291
|
|
|
# which may be taking up memory unnecessarly. |
292
|
|
|
# |
293
|
|
|
$this->urls = array(); |
294
|
|
|
$this->titles = array(); |
295
|
|
|
$this->html_hashes = array(); |
296
|
|
|
} |
297
|
|
|
|
298
|
|
|
|
299
|
|
|
function transform($text) { |
|
|
|
|
300
|
|
|
# |
301
|
|
|
# Main function. Performs some preprocessing on the input text |
302
|
|
|
# and pass it through the document gamut. |
303
|
|
|
# |
304
|
|
|
$this->setup(); |
305
|
|
|
|
306
|
|
|
# Remove UTF-8 BOM and marker character in input, if present. |
307
|
|
|
$text = preg_replace('{^\xEF\xBB\xBF|\x1A}', '', $text); |
308
|
|
|
|
309
|
|
|
# Standardize line endings: |
310
|
|
|
# DOS to Unix and Mac to Unix |
311
|
|
|
$text = preg_replace('{\r\n?}', "\n", $text); |
312
|
|
|
|
313
|
|
|
# Make sure $text ends with a couple of newlines: |
314
|
|
|
$text .= "\n\n"; |
315
|
|
|
|
316
|
|
|
# Convert all tabs to spaces. |
317
|
|
|
$text = $this->detab($text); |
318
|
|
|
|
319
|
|
|
# Turn block-level HTML blocks into hash entries |
320
|
|
|
$text = $this->hashHTMLBlocks($text); |
321
|
|
|
|
322
|
|
|
# Strip any lines consisting only of spaces and tabs. |
323
|
|
|
# This makes subsequent regexen easier to write, because we can |
324
|
|
|
# match consecutive blank lines with /\n+/ instead of something |
325
|
|
|
# contorted like /[ ]*\n+/ . |
326
|
|
|
$text = preg_replace('/^[ ]+$/m', '', $text); |
327
|
|
|
|
328
|
|
|
# Run document gamut methods. |
329
|
|
|
foreach ($this->document_gamut as $method => $priority) { |
330
|
|
|
$text = $this->$method($text); |
331
|
|
|
} |
332
|
|
|
|
333
|
|
|
$this->teardown(); |
334
|
|
|
|
335
|
|
|
return $text . "\n"; |
336
|
|
|
} |
337
|
|
|
|
338
|
|
|
var $document_gamut = array( |
339
|
|
|
# Strip link definitions, store in hashes. |
340
|
|
|
"stripLinkDefinitions" => 20, |
341
|
|
|
|
342
|
|
|
"runBasicBlockGamut" => 30, |
343
|
|
|
); |
344
|
|
|
|
345
|
|
|
|
346
|
|
View Code Duplication |
function stripLinkDefinitions($text) { |
|
|
|
|
347
|
|
|
# |
348
|
|
|
# Strips link definitions from text, stores the URLs and titles in |
349
|
|
|
# hash references. |
350
|
|
|
# |
351
|
|
|
$less_than_tab = $this->tab_width - 1; |
352
|
|
|
|
353
|
|
|
# Link defs are in the form: ^[id]: url "optional title" |
354
|
|
|
$text = preg_replace_callback('{ |
355
|
|
|
^[ ]{0,'.$less_than_tab.'}\[(.+)\][ ]?: # id = $1 |
356
|
|
|
[ ]* |
357
|
|
|
\n? # maybe *one* newline |
358
|
|
|
[ ]* |
359
|
|
|
<?(\S+?)>? # url = $2 |
360
|
|
|
[ ]* |
361
|
|
|
\n? # maybe one newline |
362
|
|
|
[ ]* |
363
|
|
|
(?: |
364
|
|
|
(?<=\s) # lookbehind for whitespace |
365
|
|
|
["(] |
366
|
|
|
(.*?) # title = $3 |
367
|
|
|
[")] |
368
|
|
|
[ ]* |
369
|
|
|
)? # title is optional |
370
|
|
|
(?:\n+|\Z) |
371
|
|
|
}xm', |
372
|
|
|
array(&$this, '_stripLinkDefinitions_callback'), |
373
|
|
|
$text); |
374
|
|
|
return $text; |
375
|
|
|
} |
376
|
|
|
function _stripLinkDefinitions_callback($matches) { |
|
|
|
|
377
|
|
|
$link_id = strtolower($matches[1]); |
378
|
|
|
$this->urls[$link_id] = $matches[2]; |
379
|
|
|
$this->titles[$link_id] =& $matches[3]; |
380
|
|
|
return ''; # String that will replace the block |
381
|
|
|
} |
382
|
|
|
|
383
|
|
|
|
384
|
|
|
function hashHTMLBlocks($text) { |
|
|
|
|
385
|
|
|
if ($this->no_markup) return $text; |
386
|
|
|
|
387
|
|
|
$less_than_tab = $this->tab_width - 1; |
388
|
|
|
|
389
|
|
|
# Hashify HTML blocks: |
390
|
|
|
# We only want to do this for block-level HTML tags, such as headers, |
391
|
|
|
# lists, and tables. That's because we still want to wrap <p>s around |
392
|
|
|
# "paragraphs" that are wrapped in non-block-level tags, such as anchors, |
393
|
|
|
# phrase emphasis, and spans. The list of tags we're looking for is |
394
|
|
|
# hard-coded: |
395
|
|
|
# |
396
|
|
|
# * List "a" is made of tags which can be both inline or block-level. |
397
|
|
|
# These will be treated block-level when the start tag is alone on |
398
|
|
|
# its line, otherwise they're not matched here and will be taken as |
399
|
|
|
# inline later. |
400
|
|
|
# * List "b" is made of tags which are always block-level; |
401
|
|
|
# |
402
|
|
|
$block_tags_a_re = 'ins|del'; |
403
|
|
|
$block_tags_b_re = 'p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|address|'. |
404
|
|
|
'script|noscript|form|fieldset|iframe|math'; |
405
|
|
|
|
406
|
|
|
# Regular expression for the content of a block tag. |
407
|
|
|
$nested_tags_level = 4; |
408
|
|
|
$attr = ' |
409
|
|
|
(?> # optional tag attributes |
410
|
|
|
\s # starts with whitespace |
411
|
|
|
(?> |
412
|
|
|
[^>"/]+ # text outside quotes |
413
|
|
|
| |
414
|
|
|
/+(?!>) # slash not followed by ">" |
415
|
|
|
| |
416
|
|
|
"[^"]*" # text inside double quotes (tolerate ">") |
417
|
|
|
| |
418
|
|
|
\'[^\']*\' # text inside single quotes (tolerate ">") |
419
|
|
|
)* |
420
|
|
|
)? |
421
|
|
|
'; |
422
|
|
|
$content = |
423
|
|
|
str_repeat(' |
424
|
|
|
(?> |
425
|
|
|
[^<]+ # content without tag |
426
|
|
|
| |
427
|
|
|
<\2 # nested opening tag |
428
|
|
|
'.$attr.' # attributes |
429
|
|
|
(?> |
430
|
|
|
/> |
431
|
|
|
| |
432
|
|
|
>', $nested_tags_level). # end of opening tag |
433
|
|
|
'.*?'. # last level nested tag content |
434
|
|
|
str_repeat(' |
435
|
|
|
</\2\s*> # closing nested tag |
436
|
|
|
) |
437
|
|
|
| |
438
|
|
|
<(?!/\2\s*> # other tags with a different name |
439
|
|
|
) |
440
|
|
|
)*', |
441
|
|
|
$nested_tags_level); |
442
|
|
|
$content2 = str_replace('\2', '\3', $content); |
443
|
|
|
|
444
|
|
|
# First, look for nested blocks, e.g.: |
445
|
|
|
# <div> |
446
|
|
|
# <div> |
447
|
|
|
# tags for inner block must be indented. |
448
|
|
|
# </div> |
449
|
|
|
# </div> |
450
|
|
|
# |
451
|
|
|
# The outermost tags must start at the left margin for this to match, and |
452
|
|
|
# the inner nested divs must be indented. |
453
|
|
|
# We need to do this before the next, more liberal match, because the next |
454
|
|
|
# match will start at the first `<div>` and stop at the first `</div>`. |
455
|
|
|
$text = preg_replace_callback('{(?> |
456
|
|
|
(?> |
457
|
|
|
(?<=\n\n) # Starting after a blank line |
458
|
|
|
| # or |
459
|
|
|
\A\n? # the beginning of the doc |
460
|
|
|
) |
461
|
|
|
( # save in $1 |
462
|
|
|
|
463
|
|
|
# Match from `\n<tag>` to `</tag>\n`, handling nested tags |
464
|
|
|
# in between. |
465
|
|
|
|
466
|
|
|
[ ]{0,'.$less_than_tab.'} |
467
|
|
|
<('.$block_tags_b_re.')# start tag = $2 |
468
|
|
|
'.$attr.'> # attributes followed by > and \n |
469
|
|
|
'.$content.' # content, support nesting |
470
|
|
|
</\2> # the matching end tag |
471
|
|
|
[ ]* # trailing spaces/tabs |
472
|
|
|
(?=\n+|\Z) # followed by a newline or end of document |
473
|
|
|
|
474
|
|
|
| # Special version for tags of group a. |
475
|
|
|
|
476
|
|
|
[ ]{0,'.$less_than_tab.'} |
477
|
|
|
<('.$block_tags_a_re.')# start tag = $3 |
478
|
|
|
'.$attr.'>[ ]*\n # attributes followed by > |
479
|
|
|
'.$content2.' # content, support nesting |
480
|
|
|
</\3> # the matching end tag |
481
|
|
|
[ ]* # trailing spaces/tabs |
482
|
|
|
(?=\n+|\Z) # followed by a newline or end of document |
483
|
|
|
|
484
|
|
|
| # Special case just for <hr />. It was easier to make a special |
485
|
|
|
# case than to make the other regex more complicated. |
486
|
|
|
|
487
|
|
|
[ ]{0,'.$less_than_tab.'} |
488
|
|
|
<(hr) # start tag = $2 |
489
|
|
|
'.$attr.' # attributes |
490
|
|
|
/?> # the matching end tag |
491
|
|
|
[ ]* |
492
|
|
|
(?=\n{2,}|\Z) # followed by a blank line or end of document |
493
|
|
|
|
494
|
|
|
| # Special case for standalone HTML comments: |
495
|
|
|
|
496
|
|
|
[ ]{0,'.$less_than_tab.'} |
497
|
|
|
(?s: |
498
|
|
|
<!-- .*? --> |
499
|
|
|
) |
500
|
|
|
[ ]* |
501
|
|
|
(?=\n{2,}|\Z) # followed by a blank line or end of document |
502
|
|
|
|
503
|
|
|
| # PHP and ASP-style processor instructions (<? and <%) |
504
|
|
|
|
505
|
|
|
[ ]{0,'.$less_than_tab.'} |
506
|
|
|
(?s: |
507
|
|
|
<([?%]) # $2 |
508
|
|
|
.*? |
509
|
|
|
\2> |
510
|
|
|
) |
511
|
|
|
[ ]* |
512
|
|
|
(?=\n{2,}|\Z) # followed by a blank line or end of document |
513
|
|
|
|
514
|
|
|
) |
515
|
|
|
)}Sxmi', |
516
|
|
|
array(&$this, '_hashHTMLBlocks_callback'), |
517
|
|
|
$text); |
518
|
|
|
|
519
|
|
|
return $text; |
520
|
|
|
} |
521
|
|
|
function _hashHTMLBlocks_callback($matches) { |
|
|
|
|
522
|
|
|
$text = $matches[1]; |
523
|
|
|
$key = $this->hashBlock($text); |
524
|
|
|
return "\n\n$key\n\n"; |
525
|
|
|
} |
526
|
|
|
|
527
|
|
|
|
528
|
|
|
function hashPart($text, $boundary = 'X') { |
|
|
|
|
529
|
|
|
# |
530
|
|
|
# Called whenever a tag must be hashed when a function insert an atomic |
531
|
|
|
# element in the text stream. Passing $text to through this function gives |
532
|
|
|
# a unique text-token which will be reverted back when calling unhash. |
533
|
|
|
# |
534
|
|
|
# The $boundary argument specify what character should be used to surround |
535
|
|
|
# the token. By convension, "B" is used for block elements that needs not |
536
|
|
|
# to be wrapped into paragraph tags at the end, ":" is used for elements |
537
|
|
|
# that are word separators and "X" is used in the general case. |
538
|
|
|
# |
539
|
|
|
# Swap back any tag hash found in $text so we do not have to `unhash` |
540
|
|
|
# multiple times at the end. |
541
|
|
|
$text = $this->unhash($text); |
542
|
|
|
|
543
|
|
|
# Then hash the block. |
544
|
|
|
static $i = 0; |
545
|
|
|
$key = "$boundary\x1A" . ++$i . $boundary; |
546
|
|
|
$this->html_hashes[$key] = $text; |
547
|
|
|
return $key; # String that will replace the tag. |
548
|
|
|
} |
549
|
|
|
|
550
|
|
|
|
551
|
|
|
function hashBlock($text) { |
|
|
|
|
552
|
|
|
# |
553
|
|
|
# Shortcut function for hashPart with block-level boundaries. |
554
|
|
|
# |
555
|
|
|
return $this->hashPart($text, 'B'); |
556
|
|
|
} |
557
|
|
|
|
558
|
|
|
|
559
|
|
|
var $block_gamut = array( |
560
|
|
|
# |
561
|
|
|
# These are all the transformations that form block-level |
562
|
|
|
# tags like paragraphs, headers, and list items. |
563
|
|
|
# |
564
|
|
|
"doHeaders" => 10, |
565
|
|
|
"doHorizontalRules" => 20, |
566
|
|
|
|
567
|
|
|
"doLists" => 40, |
568
|
|
|
"doCodeBlocks" => 50, |
569
|
|
|
"doBlockQuotes" => 60, |
570
|
|
|
); |
571
|
|
|
|
572
|
|
|
function runBlockGamut($text) { |
|
|
|
|
573
|
|
|
# |
574
|
|
|
# Run block gamut tranformations. |
575
|
|
|
# |
576
|
|
|
# We need to escape raw HTML in Markdown source before doing anything |
577
|
|
|
# else. This need to be done for each block, and not only at the |
578
|
|
|
# begining in the Markdown function since hashed blocks can be part of |
579
|
|
|
# list items and could have been indented. Indented blocks would have |
580
|
|
|
# been seen as a code block in a previous pass of hashHTMLBlocks. |
581
|
|
|
$text = $this->hashHTMLBlocks($text); |
582
|
|
|
|
583
|
|
|
return $this->runBasicBlockGamut($text); |
584
|
|
|
} |
585
|
|
|
|
586
|
|
|
function runBasicBlockGamut($text) { |
|
|
|
|
587
|
|
|
# |
588
|
|
|
# Run block gamut tranformations, without hashing HTML blocks. This is |
589
|
|
|
# useful when HTML blocks are known to be already hashed, like in the first |
590
|
|
|
# whole-document pass. |
591
|
|
|
# |
592
|
|
|
foreach ($this->block_gamut as $method => $priority) { |
593
|
|
|
$text = $this->$method($text); |
594
|
|
|
} |
595
|
|
|
|
596
|
|
|
# Finally form paragraph and restore hashed blocks. |
597
|
|
|
$text = $this->formParagraphs($text); |
598
|
|
|
|
599
|
|
|
return $text; |
600
|
|
|
} |
601
|
|
|
|
602
|
|
|
|
603
|
|
|
function doHorizontalRules($text) { |
|
|
|
|
604
|
|
|
# Do Horizontal Rules: |
605
|
|
|
return preg_replace( |
606
|
|
|
'{ |
607
|
|
|
^[ ]{0,3} # Leading space |
608
|
|
|
([-*_]) # $1: First marker |
609
|
|
|
(?> # Repeated marker group |
610
|
|
|
[ ]{0,2} # Zero, one, or two spaces. |
611
|
|
|
\1 # Marker character |
612
|
|
|
){2,} # Group repeated at least twice |
613
|
|
|
[ ]* # Tailing spaces |
614
|
|
|
$ # End of line. |
615
|
|
|
}mx', |
616
|
|
|
"\n".$this->hashBlock("<hr$this->empty_element_suffix")."\n", |
617
|
|
|
$text); |
618
|
|
|
} |
619
|
|
|
|
620
|
|
|
|
621
|
|
|
var $span_gamut = array( |
622
|
|
|
# |
623
|
|
|
# These are all the transformations that occur *within* block-level |
624
|
|
|
# tags like paragraphs, headers, and list items. |
625
|
|
|
# |
626
|
|
|
# Process character escapes, code spans, and inline HTML |
627
|
|
|
# in one shot. |
628
|
|
|
"parseSpan" => -30, |
629
|
|
|
|
630
|
|
|
# Process anchor and image tags. Images must come first, |
631
|
|
|
# because ![foo][f] looks like an anchor. |
632
|
|
|
"doImages" => 10, |
633
|
|
|
"doAnchors" => 20, |
634
|
|
|
|
635
|
|
|
# Make links out of things like `<http://example.com/>` |
636
|
|
|
# Must come after doAnchors, because you can use < and > |
637
|
|
|
# delimiters in inline links like [this](<url>). |
638
|
|
|
"doAutoLinks" => 30, |
639
|
|
|
"encodeAmpsAndAngles" => 40, |
640
|
|
|
|
641
|
|
|
"doItalicsAndBold" => 50, |
642
|
|
|
"doHardBreaks" => 60, |
643
|
|
|
); |
644
|
|
|
|
645
|
|
|
function runSpanGamut($text) { |
|
|
|
|
646
|
|
|
# |
647
|
|
|
# Run span gamut tranformations. |
648
|
|
|
# |
649
|
|
|
foreach ($this->span_gamut as $method => $priority) { |
650
|
|
|
$text = $this->$method($text); |
651
|
|
|
} |
652
|
|
|
|
653
|
|
|
return $text; |
654
|
|
|
} |
655
|
|
|
|
656
|
|
|
|
657
|
|
|
function doHardBreaks($text) { |
|
|
|
|
658
|
|
|
# Do hard breaks: |
659
|
|
|
return preg_replace_callback('/ {2,}\n/', |
660
|
|
|
array(&$this, '_doHardBreaks_callback'), $text); |
661
|
|
|
} |
662
|
|
|
function _doHardBreaks_callback($matches) { |
|
|
|
|
663
|
|
|
return $this->hashPart("<br$this->empty_element_suffix\n"); |
664
|
|
|
} |
665
|
|
|
|
666
|
|
|
|
667
|
|
|
function doAnchors($text) { |
|
|
|
|
668
|
|
|
# |
669
|
|
|
# Turn Markdown link shortcuts into XHTML <a> tags. |
670
|
|
|
# |
671
|
|
|
if ($this->in_anchor) return $text; |
672
|
|
|
$this->in_anchor = true; |
673
|
|
|
|
674
|
|
|
# |
675
|
|
|
# First, handle reference-style links: [link text] [id] |
676
|
|
|
# |
677
|
|
|
$text = preg_replace_callback('{ |
678
|
|
|
( # wrap whole match in $1 |
679
|
|
|
\[ |
680
|
|
|
('.$this->nested_brackets_re.') # link text = $2 |
681
|
|
|
\] |
682
|
|
|
|
683
|
|
|
[ ]? # one optional space |
684
|
|
|
(?:\n[ ]*)? # one optional newline followed by spaces |
685
|
|
|
|
686
|
|
|
\[ |
687
|
|
|
(.*?) # id = $3 |
688
|
|
|
\] |
689
|
|
|
) |
690
|
|
|
}xs', |
691
|
|
|
array(&$this, '_doAnchors_reference_callback'), $text); |
692
|
|
|
|
693
|
|
|
# |
694
|
|
|
# Next, inline-style links: [link text](url "optional title") |
695
|
|
|
# |
696
|
|
|
$text = preg_replace_callback('{ |
697
|
|
|
( # wrap whole match in $1 |
698
|
|
|
\[ |
699
|
|
|
('.$this->nested_brackets_re.') # link text = $2 |
700
|
|
|
\] |
701
|
|
|
\( # literal paren |
702
|
|
|
[ ]* |
703
|
|
|
(?: |
704
|
|
|
<(\S*)> # href = $3 |
705
|
|
|
| |
706
|
|
|
('.$this->nested_url_parenthesis_re.') # href = $4 |
707
|
|
|
) |
708
|
|
|
[ ]* |
709
|
|
|
( # $5 |
710
|
|
|
([\'"]) # quote char = $6 |
711
|
|
|
(.*?) # Title = $7 |
712
|
|
|
\6 # matching quote |
713
|
|
|
[ ]* # ignore any spaces/tabs between closing quote and ) |
714
|
|
|
)? # title is optional |
715
|
|
|
\) |
716
|
|
|
) |
717
|
|
|
}xs', |
718
|
|
|
array(&$this, '_DoAnchors_inline_callback'), $text); |
719
|
|
|
|
720
|
|
|
# |
721
|
|
|
# Last, handle reference-style shortcuts: [link text] |
722
|
|
|
# These must come last in case you've also got [link test][1] |
723
|
|
|
# or [link test](/foo) |
724
|
|
|
# |
725
|
|
|
// $text = preg_replace_callback('{ |
726
|
|
|
// ( # wrap whole match in $1 |
727
|
|
|
// \[ |
728
|
|
|
// ([^\[\]]+) # link text = $2; can\'t contain [ or ] |
729
|
|
|
// \] |
730
|
|
|
// ) |
731
|
|
|
// }xs', |
732
|
|
|
// array(&$this, '_doAnchors_reference_callback'), $text); |
733
|
|
|
|
734
|
|
|
$this->in_anchor = false; |
735
|
|
|
return $text; |
736
|
|
|
} |
737
|
|
|
function _doAnchors_reference_callback($matches) { |
|
|
|
|
738
|
|
|
$whole_match = $matches[1]; |
739
|
|
|
$link_text = $matches[2]; |
740
|
|
|
$link_id =& $matches[3]; |
741
|
|
|
|
742
|
|
|
if ($link_id == "") { |
743
|
|
|
# for shortcut links like [this][] or [this]. |
744
|
|
|
$link_id = $link_text; |
745
|
|
|
} |
746
|
|
|
|
747
|
|
|
# lower-case and turn embedded newlines into spaces |
748
|
|
|
$link_id = strtolower($link_id); |
749
|
|
|
$link_id = preg_replace('{[ ]?\n}', ' ', $link_id); |
750
|
|
|
|
751
|
|
|
if (isset($this->urls[$link_id])) { |
752
|
|
|
$url = $this->urls[$link_id]; |
753
|
|
|
$url = $this->encodeAttribute($url); |
754
|
|
|
|
755
|
|
|
$result = "<a href=\"$url\""; |
756
|
|
View Code Duplication |
if ( isset( $this->titles[$link_id] ) ) { |
|
|
|
|
757
|
|
|
$title = $this->titles[$link_id]; |
758
|
|
|
$title = $this->encodeAttribute($title); |
759
|
|
|
$result .= " title=\"$title\""; |
760
|
|
|
} |
761
|
|
|
|
762
|
|
|
$link_text = $this->runSpanGamut($link_text); |
763
|
|
|
$result .= ">$link_text</a>"; |
764
|
|
|
$result = $this->hashPart($result); |
765
|
|
|
} |
766
|
|
|
else { |
767
|
|
|
$result = $whole_match; |
768
|
|
|
} |
769
|
|
|
return $result; |
770
|
|
|
} |
771
|
|
View Code Duplication |
function _doAnchors_inline_callback($matches) { |
|
|
|
|
772
|
|
|
$whole_match = $matches[1]; |
|
|
|
|
773
|
|
|
$link_text = $this->runSpanGamut($matches[2]); |
774
|
|
|
$url = $matches[3] == '' ? $matches[4] : $matches[3]; |
775
|
|
|
$title =& $matches[7]; |
776
|
|
|
|
777
|
|
|
$url = $this->encodeAttribute($url); |
778
|
|
|
|
779
|
|
|
$result = "<a href=\"$url\""; |
780
|
|
|
if (isset($title)) { |
781
|
|
|
$title = $this->encodeAttribute($title); |
782
|
|
|
$result .= " title=\"$title\""; |
783
|
|
|
} |
784
|
|
|
|
785
|
|
|
$link_text = $this->runSpanGamut($link_text); |
786
|
|
|
$result .= ">$link_text</a>"; |
787
|
|
|
|
788
|
|
|
return $this->hashPart($result); |
789
|
|
|
} |
790
|
|
|
|
791
|
|
|
|
792
|
|
|
function doImages($text) { |
|
|
|
|
793
|
|
|
# |
794
|
|
|
# Turn Markdown image shortcuts into <img> tags. |
795
|
|
|
# |
796
|
|
|
# |
797
|
|
|
# First, handle reference-style labeled images: ![alt text][id] |
798
|
|
|
# |
799
|
|
|
$text = preg_replace_callback('{ |
800
|
|
|
( # wrap whole match in $1 |
801
|
|
|
!\[ |
802
|
|
|
('.$this->nested_brackets_re.') # alt text = $2 |
803
|
|
|
\] |
804
|
|
|
|
805
|
|
|
[ ]? # one optional space |
806
|
|
|
(?:\n[ ]*)? # one optional newline followed by spaces |
807
|
|
|
|
808
|
|
|
\[ |
809
|
|
|
(.*?) # id = $3 |
810
|
|
|
\] |
811
|
|
|
|
812
|
|
|
) |
813
|
|
|
}xs', |
814
|
|
|
array(&$this, '_doImages_reference_callback'), $text); |
815
|
|
|
|
816
|
|
|
# |
817
|
|
|
# Next, handle inline images:  |
818
|
|
|
# Don't forget: encode * and _ |
819
|
|
|
# |
820
|
|
|
$text = preg_replace_callback('{ |
821
|
|
|
( # wrap whole match in $1 |
822
|
|
|
!\[ |
823
|
|
|
('.$this->nested_brackets_re.') # alt text = $2 |
824
|
|
|
\] |
825
|
|
|
\s? # One optional whitespace character |
826
|
|
|
\( # literal paren |
827
|
|
|
[ ]* |
828
|
|
|
(?: |
829
|
|
|
<(\S*)> # src url = $3 |
830
|
|
|
| |
831
|
|
|
('.$this->nested_url_parenthesis_re.') # src url = $4 |
832
|
|
|
) |
833
|
|
|
[ ]* |
834
|
|
|
( # $5 |
835
|
|
|
([\'"]) # quote char = $6 |
836
|
|
|
(.*?) # title = $7 |
837
|
|
|
\6 # matching quote |
838
|
|
|
[ ]* |
839
|
|
|
)? # title is optional |
840
|
|
|
\) |
841
|
|
|
) |
842
|
|
|
}xs', |
843
|
|
|
array(&$this, '_doImages_inline_callback'), $text); |
844
|
|
|
|
845
|
|
|
return $text; |
846
|
|
|
} |
847
|
|
|
function _doImages_reference_callback($matches) { |
|
|
|
|
848
|
|
|
$whole_match = $matches[1]; |
849
|
|
|
$alt_text = $matches[2]; |
850
|
|
|
$link_id = strtolower($matches[3]); |
851
|
|
|
|
852
|
|
|
if ($link_id == "") { |
853
|
|
|
$link_id = strtolower($alt_text); # for shortcut links like ![this][]. |
854
|
|
|
} |
855
|
|
|
|
856
|
|
|
$alt_text = $this->encodeAttribute($alt_text); |
857
|
|
|
if (isset($this->urls[$link_id])) { |
858
|
|
|
$url = $this->encodeAttribute($this->urls[$link_id]); |
859
|
|
|
$result = "<img src=\"$url\" alt=\"$alt_text\""; |
860
|
|
View Code Duplication |
if (isset($this->titles[$link_id])) { |
|
|
|
|
861
|
|
|
$title = $this->titles[$link_id]; |
862
|
|
|
$title = $this->encodeAttribute($title); |
863
|
|
|
$result .= " title=\"$title\""; |
864
|
|
|
} |
865
|
|
|
$result .= $this->empty_element_suffix; |
866
|
|
|
$result = $this->hashPart($result); |
867
|
|
|
} |
868
|
|
|
else { |
869
|
|
|
# If there's no such link ID, leave intact: |
870
|
|
|
$result = $whole_match; |
871
|
|
|
} |
872
|
|
|
|
873
|
|
|
return $result; |
874
|
|
|
} |
875
|
|
View Code Duplication |
function _doImages_inline_callback($matches) { |
|
|
|
|
876
|
|
|
$whole_match = $matches[1]; |
|
|
|
|
877
|
|
|
$alt_text = $matches[2]; |
878
|
|
|
$url = $matches[3] == '' ? $matches[4] : $matches[3]; |
879
|
|
|
$title =& $matches[7]; |
880
|
|
|
|
881
|
|
|
$alt_text = $this->encodeAttribute($alt_text); |
882
|
|
|
$url = $this->encodeAttribute($url); |
883
|
|
|
$result = "<img src=\"$url\" alt=\"$alt_text\""; |
884
|
|
|
if (isset($title)) { |
885
|
|
|
$title = $this->encodeAttribute($title); |
886
|
|
|
$result .= " title=\"$title\""; # $title already quoted |
887
|
|
|
} |
888
|
|
|
$result .= $this->empty_element_suffix; |
889
|
|
|
|
890
|
|
|
return $this->hashPart($result); |
891
|
|
|
} |
892
|
|
|
|
893
|
|
|
|
894
|
|
View Code Duplication |
function doHeaders($text) { |
|
|
|
|
895
|
|
|
# Setext-style headers: |
896
|
|
|
# Header 1 |
897
|
|
|
# ======== |
898
|
|
|
# |
899
|
|
|
# Header 2 |
900
|
|
|
# -------- |
901
|
|
|
# |
902
|
|
|
$text = preg_replace_callback('{ ^(.+?)[ ]*\n(=+|-+)[ ]*\n+ }mx', |
903
|
|
|
array(&$this, '_doHeaders_callback_setext'), $text); |
904
|
|
|
|
905
|
|
|
# atx-style headers: |
906
|
|
|
# # Header 1 |
907
|
|
|
# ## Header 2 |
908
|
|
|
# ## Header 2 with closing hashes ## |
909
|
|
|
# ... |
910
|
|
|
# ###### Header 6 |
911
|
|
|
# |
912
|
|
|
$text = preg_replace_callback('{ |
913
|
|
|
^(\#{1,6}) # $1 = string of #\'s |
914
|
|
|
[ ]* |
915
|
|
|
(.+?) # $2 = Header text |
916
|
|
|
[ ]* |
917
|
|
|
\#* # optional closing #\'s (not counted) |
918
|
|
|
\n+ |
919
|
|
|
}xm', |
920
|
|
|
array(&$this, '_doHeaders_callback_atx'), $text); |
921
|
|
|
|
922
|
|
|
return $text; |
923
|
|
|
} |
924
|
|
|
function _doHeaders_callback_setext($matches) { |
|
|
|
|
925
|
|
|
# Terrible hack to check we haven't found an empty list item. |
926
|
|
View Code Duplication |
if ($matches[2] == '-' && preg_match('{^-(?: |$)}', $matches[1])) |
|
|
|
|
927
|
|
|
return $matches[0]; |
928
|
|
|
|
929
|
|
|
$level = $matches[2]{0} == '=' ? 1 : 2; |
930
|
|
|
$block = "<h$level>".$this->runSpanGamut($matches[1])."</h$level>"; |
931
|
|
|
return "\n" . $this->hashBlock($block) . "\n\n"; |
932
|
|
|
} |
933
|
|
|
function _doHeaders_callback_atx($matches) { |
|
|
|
|
934
|
|
|
$level = strlen($matches[1]); |
935
|
|
|
$block = "<h$level>".$this->runSpanGamut($matches[2])."</h$level>"; |
936
|
|
|
return "\n" . $this->hashBlock($block) . "\n\n"; |
937
|
|
|
} |
938
|
|
|
|
939
|
|
|
|
940
|
|
|
function doLists($text) { |
|
|
|
|
941
|
|
|
# |
942
|
|
|
# Form HTML ordered (numbered) and unordered (bulleted) lists. |
943
|
|
|
# |
944
|
|
|
$less_than_tab = $this->tab_width - 1; |
945
|
|
|
|
946
|
|
|
# Re-usable patterns to match list item bullets and number markers: |
947
|
|
|
$marker_ul_re = '[*+-]'; |
948
|
|
|
$marker_ol_re = '\d+[.]'; |
949
|
|
|
$marker_any_re = "(?:$marker_ul_re|$marker_ol_re)"; |
|
|
|
|
950
|
|
|
|
951
|
|
|
$markers_relist = array($marker_ul_re, $marker_ol_re); |
952
|
|
|
|
953
|
|
|
foreach ($markers_relist as $marker_re) { |
954
|
|
|
# Re-usable pattern to match any entirel ul or ol list: |
955
|
|
|
$whole_list_re = ' |
956
|
|
|
( # $1 = whole list |
957
|
|
|
( # $2 |
958
|
|
|
[ ]{0,'.$less_than_tab.'} |
959
|
|
|
('.$marker_re.') # $3 = first list item marker |
960
|
|
|
[ ]+ |
961
|
|
|
) |
962
|
|
|
(?s:.+?) |
963
|
|
|
( # $4 |
964
|
|
|
\z |
965
|
|
|
| |
966
|
|
|
\n{2,} |
967
|
|
|
(?=\S) |
968
|
|
|
(?! # Negative lookahead for another list item marker |
969
|
|
|
[ ]* |
970
|
|
|
'.$marker_re.'[ ]+ |
971
|
|
|
) |
972
|
|
|
) |
973
|
|
|
) |
974
|
|
|
'; // mx |
975
|
|
|
|
976
|
|
|
# We use a different prefix before nested lists than top-level lists. |
977
|
|
|
# See extended comment in _ProcessListItems(). |
978
|
|
|
|
979
|
|
|
if ($this->list_level) { |
980
|
|
|
$text = preg_replace_callback('{ |
981
|
|
|
^ |
982
|
|
|
'.$whole_list_re.' |
983
|
|
|
}mx', |
984
|
|
|
array(&$this, '_doLists_callback'), $text); |
985
|
|
|
} |
986
|
|
|
else { |
987
|
|
|
$text = preg_replace_callback('{ |
988
|
|
|
(?:(?<=\n)\n|\A\n?) # Must eat the newline |
989
|
|
|
'.$whole_list_re.' |
990
|
|
|
}mx', |
991
|
|
|
array(&$this, '_doLists_callback'), $text); |
992
|
|
|
} |
993
|
|
|
} |
994
|
|
|
|
995
|
|
|
return $text; |
996
|
|
|
} |
997
|
|
|
function _doLists_callback($matches) { |
|
|
|
|
998
|
|
|
# Re-usable patterns to match list item bullets and number markers: |
999
|
|
|
$marker_ul_re = '[*+-]'; |
1000
|
|
|
$marker_ol_re = '\d+[.]'; |
1001
|
|
|
$marker_any_re = "(?:$marker_ul_re|$marker_ol_re)"; |
|
|
|
|
1002
|
|
|
|
1003
|
|
|
$list = $matches[1]; |
1004
|
|
|
$list_type = preg_match("/$marker_ul_re/", $matches[3]) ? "ul" : "ol"; |
1005
|
|
|
|
1006
|
|
|
$marker_any_re = ( $list_type == "ul" ? $marker_ul_re : $marker_ol_re ); |
1007
|
|
|
|
1008
|
|
|
$list .= "\n"; |
1009
|
|
|
$result = $this->processListItems($list, $marker_any_re); |
1010
|
|
|
|
1011
|
|
|
$result = $this->hashBlock("<$list_type>\n" . $result . "</$list_type>"); |
1012
|
|
|
return "\n". $result ."\n\n"; |
1013
|
|
|
} |
1014
|
|
|
|
1015
|
|
|
var $list_level = 0; |
1016
|
|
|
|
1017
|
|
|
/** |
1018
|
|
|
* @param string $list_str |
1019
|
|
|
* @param string $marker_any_re |
1020
|
|
|
*/ |
1021
|
|
|
function processListItems($list_str, $marker_any_re) { |
|
|
|
|
1022
|
|
|
# |
1023
|
|
|
# Process the contents of a single ordered or unordered list, splitting it |
1024
|
|
|
# into individual list items. |
1025
|
|
|
# |
1026
|
|
|
# The $this->list_level global keeps track of when we're inside a list. |
1027
|
|
|
# Each time we enter a list, we increment it; when we leave a list, |
1028
|
|
|
# we decrement. If it's zero, we're not in a list anymore. |
1029
|
|
|
# |
1030
|
|
|
# We do this because when we're not inside a list, we want to treat |
1031
|
|
|
# something like this: |
1032
|
|
|
# |
1033
|
|
|
# I recommend upgrading to version |
1034
|
|
|
# 8. Oops, now this line is treated |
1035
|
|
|
# as a sub-list. |
1036
|
|
|
# |
1037
|
|
|
# As a single paragraph, despite the fact that the second line starts |
1038
|
|
|
# with a digit-period-space sequence. |
1039
|
|
|
# |
1040
|
|
|
# Whereas when we're inside a list (or sub-list), that line will be |
1041
|
|
|
# treated as the start of a sub-list. What a kludge, huh? This is |
1042
|
|
|
# an aspect of Markdown's syntax that's hard to parse perfectly |
1043
|
|
|
# without resorting to mind-reading. Perhaps the solution is to |
1044
|
|
|
# change the syntax rules such that sub-lists must start with a |
1045
|
|
|
# starting cardinal number; e.g. "1." or "a.". |
1046
|
|
|
|
1047
|
|
|
$this->list_level++; |
1048
|
|
|
|
1049
|
|
|
# trim trailing blank lines: |
1050
|
|
|
$list_str = preg_replace("/\n{2,}\\z/", "\n", $list_str); |
1051
|
|
|
|
1052
|
|
|
$list_str = preg_replace_callback('{ |
1053
|
|
|
(\n)? # leading line = $1 |
1054
|
|
|
(^[ ]*) # leading whitespace = $2 |
1055
|
|
|
('.$marker_any_re.' # list marker and space = $3 |
1056
|
|
|
(?:[ ]+|(?=\n)) # space only required if item is not empty |
1057
|
|
|
) |
1058
|
|
|
((?s:.*?)) # list item text = $4 |
1059
|
|
|
(?:(\n+(?=\n))|\n) # tailing blank line = $5 |
1060
|
|
|
(?= \n* (\z | \2 ('.$marker_any_re.') (?:[ ]+|(?=\n)))) |
1061
|
|
|
}xm', |
1062
|
|
|
array(&$this, '_processListItems_callback'), $list_str); |
1063
|
|
|
|
1064
|
|
|
$this->list_level--; |
1065
|
|
|
return $list_str; |
1066
|
|
|
} |
1067
|
|
|
function _processListItems_callback($matches) { |
|
|
|
|
1068
|
|
|
$item = $matches[4]; |
1069
|
|
|
$leading_line =& $matches[1]; |
1070
|
|
|
$leading_space =& $matches[2]; |
1071
|
|
|
$marker_space = $matches[3]; |
1072
|
|
|
$tailing_blank_line =& $matches[5]; |
1073
|
|
|
|
1074
|
|
View Code Duplication |
if ($leading_line || $tailing_blank_line || |
|
|
|
|
1075
|
|
|
preg_match('/\n{2,}/', $item)) |
1076
|
|
|
{ |
1077
|
|
|
# Replace marker with the appropriate whitespace indentation |
1078
|
|
|
$item = $leading_space . str_repeat(' ', strlen($marker_space)) . $item; |
1079
|
|
|
$item = $this->runBlockGamut($this->outdent($item)."\n"); |
1080
|
|
|
} |
1081
|
|
|
else { |
1082
|
|
|
# Recursion for sub-lists: |
1083
|
|
|
$item = $this->doLists($this->outdent($item)); |
1084
|
|
|
$item = preg_replace('/\n+$/', '', $item); |
1085
|
|
|
$item = $this->runSpanGamut($item); |
1086
|
|
|
} |
1087
|
|
|
|
1088
|
|
|
return "<li>" . $item . "</li>\n"; |
1089
|
|
|
} |
1090
|
|
|
|
1091
|
|
|
|
1092
|
|
|
function doCodeBlocks($text) { |
|
|
|
|
1093
|
|
|
# |
1094
|
|
|
# Process Markdown `<pre><code>` blocks. |
1095
|
|
|
# |
1096
|
|
|
$text = preg_replace_callback('{ |
1097
|
|
|
(?:\n\n|\A\n?) |
1098
|
|
|
( # $1 = the code block -- one or more lines, starting with a space/tab |
1099
|
|
|
(?> |
1100
|
|
|
[ ]{'.$this->tab_width.'} # Lines must start with a tab or a tab-width of spaces |
1101
|
|
|
.*\n+ |
1102
|
|
|
)+ |
1103
|
|
|
) |
1104
|
|
|
((?=^[ ]{0,'.$this->tab_width.'}\S)|\Z) # Lookahead for non-space at line-start, or end of doc |
1105
|
|
|
}xm', |
1106
|
|
|
array(&$this, '_doCodeBlocks_callback'), $text); |
1107
|
|
|
|
1108
|
|
|
return $text; |
1109
|
|
|
} |
1110
|
|
|
function _doCodeBlocks_callback($matches) { |
|
|
|
|
1111
|
|
|
$codeblock = $matches[1]; |
1112
|
|
|
|
1113
|
|
|
$codeblock = $this->outdent($codeblock); |
1114
|
|
|
$codeblock = htmlspecialchars($codeblock, ENT_NOQUOTES); |
1115
|
|
|
|
1116
|
|
|
# trim leading newlines and trailing newlines |
1117
|
|
|
$codeblock = preg_replace('/\A\n+|\n+\z/', '', $codeblock); |
1118
|
|
|
|
1119
|
|
|
$codeblock = "<pre><code>$codeblock\n</code></pre>"; |
1120
|
|
|
return "\n\n".$this->hashBlock($codeblock)."\n\n"; |
1121
|
|
|
} |
1122
|
|
|
|
1123
|
|
|
|
1124
|
|
|
/** |
1125
|
|
|
* @param string $code |
1126
|
|
|
*/ |
1127
|
|
|
function makeCodeSpan($code) { |
|
|
|
|
1128
|
|
|
# |
1129
|
|
|
# Create a code span markup for $code. Called from handleSpanToken. |
1130
|
|
|
# |
1131
|
|
|
$code = htmlspecialchars(trim($code), ENT_NOQUOTES); |
1132
|
|
|
return $this->hashPart("<code>$code</code>"); |
1133
|
|
|
} |
1134
|
|
|
|
1135
|
|
|
|
1136
|
|
|
var $em_relist = array( |
1137
|
|
|
'' => '(?:(?<!\*)\*(?!\*)|(?<!_)_(?!_))(?=\S)(?![.,:;]\s)', |
1138
|
|
|
'*' => '(?<=\S)(?<!\*)\*(?!\*)', |
1139
|
|
|
'_' => '(?<=\S)(?<!_)_(?!_)', |
1140
|
|
|
); |
1141
|
|
|
var $strong_relist = array( |
1142
|
|
|
'' => '(?:(?<!\*)\*\*(?!\*)|(?<!_)__(?!_))(?=\S)(?![.,:;]\s)', |
1143
|
|
|
'**' => '(?<=\S)(?<!\*)\*\*(?!\*)', |
1144
|
|
|
'__' => '(?<=\S)(?<!_)__(?!_)', |
1145
|
|
|
); |
1146
|
|
|
var $em_strong_relist = array( |
1147
|
|
|
'' => '(?:(?<!\*)\*\*\*(?!\*)|(?<!_)___(?!_))(?=\S)(?![.,:;]\s)', |
1148
|
|
|
'***' => '(?<=\S)(?<!\*)\*\*\*(?!\*)', |
1149
|
|
|
'___' => '(?<=\S)(?<!_)___(?!_)', |
1150
|
|
|
); |
1151
|
|
|
var $em_strong_prepared_relist; |
|
|
|
|
1152
|
|
|
|
1153
|
|
|
function prepareItalicsAndBold() { |
|
|
|
|
1154
|
|
|
# |
1155
|
|
|
# Prepare regular expressions for seraching emphasis tokens in any |
1156
|
|
|
# context. |
1157
|
|
|
# |
1158
|
|
|
foreach ($this->em_relist as $em => $em_re) { |
1159
|
|
|
foreach ($this->strong_relist as $strong => $strong_re) { |
1160
|
|
|
# Construct list of allowed token expressions. |
1161
|
|
|
$token_relist = array(); |
1162
|
|
|
if (isset($this->em_strong_relist["$em$strong"])) { |
1163
|
|
|
$token_relist[] = $this->em_strong_relist["$em$strong"]; |
1164
|
|
|
} |
1165
|
|
|
$token_relist[] = $em_re; |
1166
|
|
|
$token_relist[] = $strong_re; |
1167
|
|
|
|
1168
|
|
|
# Construct master expression from list. |
1169
|
|
|
$token_re = '{('. implode('|', $token_relist) .')}'; |
1170
|
|
|
$this->em_strong_prepared_relist["$em$strong"] = $token_re; |
1171
|
|
|
} |
1172
|
|
|
} |
1173
|
|
|
} |
1174
|
|
|
|
1175
|
|
|
function doItalicsAndBold($text) { |
|
|
|
|
1176
|
|
|
$token_stack = array(''); |
1177
|
|
|
$text_stack = array(''); |
1178
|
|
|
$em = ''; |
|
|
|
|
1179
|
|
|
$strong = ''; |
1180
|
|
|
$tree_char_em = false; |
1181
|
|
|
|
1182
|
|
|
while (1) { |
1183
|
|
|
# |
1184
|
|
|
# Get prepared regular expression for seraching emphasis tokens |
1185
|
|
|
# in current context. |
1186
|
|
|
# |
1187
|
|
|
$token_re = $this->em_strong_prepared_relist["$em$strong"]; |
1188
|
|
|
|
1189
|
|
|
# |
1190
|
|
|
# Each loop iteration seach for the next emphasis token. |
1191
|
|
|
# Each token is then passed to handleSpanToken. |
1192
|
|
|
# |
1193
|
|
|
$parts = preg_split($token_re, $text, 2, PREG_SPLIT_DELIM_CAPTURE); |
1194
|
|
|
$text_stack[0] .= $parts[0]; |
1195
|
|
|
$token =& $parts[1]; |
1196
|
|
|
$text =& $parts[2]; |
1197
|
|
|
|
1198
|
|
View Code Duplication |
if (empty($token)) { |
|
|
|
|
1199
|
|
|
# Reached end of text span: empty stack without emitting. |
1200
|
|
|
# any more emphasis. |
1201
|
|
|
while ($token_stack[0]) { |
1202
|
|
|
$text_stack[1] .= array_shift($token_stack); |
1203
|
|
|
$text_stack[0] .= array_shift($text_stack); |
1204
|
|
|
} |
1205
|
|
|
break; |
1206
|
|
|
} |
1207
|
|
|
|
1208
|
|
|
$token_len = strlen($token); |
1209
|
|
|
if ($tree_char_em) { |
1210
|
|
|
# Reached closing marker while inside a three-char emphasis. |
1211
|
|
|
if ($token_len == 3) { |
1212
|
|
|
# Three-char closing marker, close em and strong. |
1213
|
|
|
array_shift($token_stack); |
1214
|
|
|
$span = array_shift($text_stack); |
1215
|
|
|
$span = $this->runSpanGamut($span); |
1216
|
|
|
$span = "<strong><em>$span</em></strong>"; |
1217
|
|
|
$text_stack[0] .= $this->hashPart($span); |
1218
|
|
|
$em = ''; |
1219
|
|
|
$strong = ''; |
1220
|
|
|
} else { |
1221
|
|
|
# Other closing marker: close one em or strong and |
1222
|
|
|
# change current token state to match the other |
1223
|
|
|
$token_stack[0] = str_repeat($token{0}, 3-$token_len); |
1224
|
|
|
$tag = $token_len == 2 ? "strong" : "em"; |
1225
|
|
|
$span = $text_stack[0]; |
1226
|
|
|
$span = $this->runSpanGamut($span); |
1227
|
|
|
$span = "<$tag>$span</$tag>"; |
1228
|
|
|
$text_stack[0] = $this->hashPart($span); |
1229
|
|
|
$$tag = ''; # $$tag stands for $em or $strong |
1230
|
|
|
} |
1231
|
|
|
$tree_char_em = false; |
1232
|
|
|
} else if ($token_len == 3) { |
1233
|
|
|
if ($em) { |
1234
|
|
|
# Reached closing marker for both em and strong. |
1235
|
|
|
# Closing strong marker: |
1236
|
|
|
for ($i = 0; $i < 2; ++$i) { |
1237
|
|
|
$shifted_token = array_shift($token_stack); |
1238
|
|
|
$tag = strlen($shifted_token) == 2 ? "strong" : "em"; |
1239
|
|
|
$span = array_shift($text_stack); |
1240
|
|
|
$span = $this->runSpanGamut($span); |
1241
|
|
|
$span = "<$tag>$span</$tag>"; |
1242
|
|
|
$text_stack[0] .= $this->hashPart($span); |
1243
|
|
|
$$tag = ''; # $$tag stands for $em or $strong |
1244
|
|
|
} |
1245
|
|
|
} else { |
1246
|
|
|
# Reached opening three-char emphasis marker. Push on token |
1247
|
|
|
# stack; will be handled by the special condition above. |
1248
|
|
|
$em = $token{0}; |
1249
|
|
|
$strong = "$em$em"; |
1250
|
|
|
array_unshift($token_stack, $token); |
1251
|
|
|
array_unshift($text_stack, ''); |
1252
|
|
|
$tree_char_em = true; |
1253
|
|
|
} |
1254
|
|
|
} else if ($token_len == 2) { |
1255
|
|
|
if ($strong) { |
1256
|
|
|
# Unwind any dangling emphasis marker: |
1257
|
|
View Code Duplication |
if (strlen($token_stack[0]) == 1) { |
|
|
|
|
1258
|
|
|
$text_stack[1] .= array_shift($token_stack); |
1259
|
|
|
$text_stack[0] .= array_shift($text_stack); |
1260
|
|
|
} |
1261
|
|
|
# Closing strong marker: |
1262
|
|
|
array_shift($token_stack); |
1263
|
|
|
$span = array_shift($text_stack); |
1264
|
|
|
$span = $this->runSpanGamut($span); |
1265
|
|
|
$span = "<strong>$span</strong>"; |
1266
|
|
|
$text_stack[0] .= $this->hashPart($span); |
1267
|
|
|
$strong = ''; |
1268
|
|
|
} else { |
1269
|
|
|
array_unshift($token_stack, $token); |
1270
|
|
|
array_unshift($text_stack, ''); |
1271
|
|
|
$strong = $token; |
1272
|
|
|
} |
1273
|
|
|
} else { |
1274
|
|
|
# Here $token_len == 1 |
1275
|
|
|
if ($em) { |
1276
|
|
|
if (strlen($token_stack[0]) == 1) { |
1277
|
|
|
# Closing emphasis marker: |
1278
|
|
|
array_shift($token_stack); |
1279
|
|
|
$span = array_shift($text_stack); |
1280
|
|
|
$span = $this->runSpanGamut($span); |
1281
|
|
|
$span = "<em>$span</em>"; |
1282
|
|
|
$text_stack[0] .= $this->hashPart($span); |
1283
|
|
|
$em = ''; |
1284
|
|
|
} else { |
1285
|
|
|
$text_stack[0] .= $token; |
1286
|
|
|
} |
1287
|
|
|
} else { |
1288
|
|
|
array_unshift($token_stack, $token); |
1289
|
|
|
array_unshift($text_stack, ''); |
1290
|
|
|
$em = $token; |
1291
|
|
|
} |
1292
|
|
|
} |
1293
|
|
|
} |
1294
|
|
|
return $text_stack[0]; |
1295
|
|
|
} |
1296
|
|
|
|
1297
|
|
|
|
1298
|
|
|
function doBlockQuotes($text) { |
|
|
|
|
1299
|
|
|
$text = preg_replace_callback('/ |
1300
|
|
|
( # Wrap whole match in $1 |
1301
|
|
|
(?> |
1302
|
|
|
^[ ]*>[ ]? # ">" at the start of a line |
1303
|
|
|
.+\n # rest of the first line |
1304
|
|
|
(.+\n)* # subsequent consecutive lines |
1305
|
|
|
\n* # blanks |
1306
|
|
|
)+ |
1307
|
|
|
) |
1308
|
|
|
/xm', |
1309
|
|
|
array(&$this, '_doBlockQuotes_callback'), $text); |
1310
|
|
|
|
1311
|
|
|
return $text; |
1312
|
|
|
} |
1313
|
|
|
function _doBlockQuotes_callback($matches) { |
|
|
|
|
1314
|
|
|
$bq = $matches[1]; |
|
|
|
|
1315
|
|
|
# trim one level of quoting - trim whitespace-only lines |
1316
|
|
|
$bq = preg_replace('/^[ ]*>[ ]?|^[ ]+$/m', '', $bq); |
1317
|
|
|
$bq = $this->runBlockGamut($bq); # recurse |
1318
|
|
|
|
1319
|
|
|
$bq = preg_replace('/^/m', " ", $bq); |
1320
|
|
|
# These leading spaces cause problem with <pre> content, |
1321
|
|
|
# so we need to fix that: |
1322
|
|
|
$bq = preg_replace_callback('{(\s*<pre>.+?</pre>)}sx', |
1323
|
|
|
array(&$this, '_DoBlockQuotes_callback2'), $bq); |
1324
|
|
|
|
1325
|
|
|
return "\n". $this->hashBlock("<blockquote>\n$bq\n</blockquote>")."\n\n"; |
1326
|
|
|
} |
1327
|
|
|
function _doBlockQuotes_callback2($matches) { |
|
|
|
|
1328
|
|
|
$pre = $matches[1]; |
1329
|
|
|
$pre = preg_replace('/^ /m', '', $pre); |
1330
|
|
|
return $pre; |
1331
|
|
|
} |
1332
|
|
|
|
1333
|
|
|
|
1334
|
|
|
function formParagraphs($text) { |
|
|
|
|
1335
|
|
|
# |
1336
|
|
|
# Params: |
1337
|
|
|
# $text - string to process with html <p> tags |
1338
|
|
|
# |
1339
|
|
|
# Strip leading and trailing lines: |
1340
|
|
|
$text = preg_replace('/\A\n+|\n+\z/', '', $text); |
1341
|
|
|
|
1342
|
|
|
$grafs = preg_split('/\n{2,}/', $text, -1, PREG_SPLIT_NO_EMPTY); |
1343
|
|
|
|
1344
|
|
|
# |
1345
|
|
|
# Wrap <p> tags and unhashify HTML blocks |
1346
|
|
|
# |
1347
|
|
|
foreach ($grafs as $key => $value) { |
1348
|
|
|
if (!preg_match('/^B\x1A[0-9]+B$/', $value)) { |
1349
|
|
|
# Is a paragraph. |
1350
|
|
|
$value = $this->runSpanGamut($value); |
1351
|
|
|
$value = preg_replace('/^([ ]*)/', "<p>", $value); |
1352
|
|
|
$value .= "</p>"; |
1353
|
|
|
$grafs[$key] = $this->unhash($value); |
1354
|
|
|
} |
1355
|
|
|
else { |
1356
|
|
|
# Is a block. |
1357
|
|
|
# Modify elements of @grafs in-place... |
1358
|
|
|
$graf = $value; |
1359
|
|
|
$block = $this->html_hashes[$graf]; |
1360
|
|
|
$graf = $block; |
1361
|
|
|
// if (preg_match('{ |
1362
|
|
|
// \A |
1363
|
|
|
// ( # $1 = <div> tag |
1364
|
|
|
// <div \s+ |
1365
|
|
|
// [^>]* |
1366
|
|
|
// \b |
1367
|
|
|
// markdown\s*=\s* ([\'"]) # $2 = attr quote char |
1368
|
|
|
// 1 |
1369
|
|
|
// \2 |
1370
|
|
|
// [^>]* |
1371
|
|
|
// > |
1372
|
|
|
// ) |
1373
|
|
|
// ( # $3 = contents |
1374
|
|
|
// .* |
1375
|
|
|
// ) |
1376
|
|
|
// (</div>) # $4 = closing tag |
1377
|
|
|
// \z |
1378
|
|
|
// }xs', $block, $matches)) |
1379
|
|
|
// { |
1380
|
|
|
// list(, $div_open, , $div_content, $div_close) = $matches; |
1381
|
|
|
// |
1382
|
|
|
// # We can't call Markdown(), because that resets the hash; |
1383
|
|
|
// # that initialization code should be pulled into its own sub, though. |
1384
|
|
|
// $div_content = $this->hashHTMLBlocks($div_content); |
1385
|
|
|
// |
1386
|
|
|
// # Run document gamut methods on the content. |
1387
|
|
|
// foreach ($this->document_gamut as $method => $priority) { |
1388
|
|
|
// $div_content = $this->$method($div_content); |
1389
|
|
|
// } |
1390
|
|
|
// |
1391
|
|
|
// $div_open = preg_replace( |
1392
|
|
|
// '{\smarkdown\s*=\s*([\'"]).+?\1}', '', $div_open); |
1393
|
|
|
// |
1394
|
|
|
// $graf = $div_open . "\n" . $div_content . "\n" . $div_close; |
1395
|
|
|
// } |
1396
|
|
|
$grafs[$key] = $graf; |
1397
|
|
|
} |
1398
|
|
|
} |
1399
|
|
|
|
1400
|
|
|
return implode("\n\n", $grafs); |
1401
|
|
|
} |
1402
|
|
|
|
1403
|
|
|
|
1404
|
|
|
function encodeAttribute($text) { |
|
|
|
|
1405
|
|
|
# |
1406
|
|
|
# Encode text for a double-quoted HTML attribute. This function |
1407
|
|
|
# is *not* suitable for attributes enclosed in single quotes. |
1408
|
|
|
# |
1409
|
|
|
$text = $this->encodeAmpsAndAngles($text); |
1410
|
|
|
$text = str_replace('"', '"', $text); |
1411
|
|
|
return $text; |
1412
|
|
|
} |
1413
|
|
|
|
1414
|
|
|
|
1415
|
|
|
function encodeAmpsAndAngles($text) { |
|
|
|
|
1416
|
|
|
# |
1417
|
|
|
# Smart processing for ampersands and angle brackets that need to |
1418
|
|
|
# be encoded. Valid character entities are left alone unless the |
1419
|
|
|
# no-entities mode is set. |
1420
|
|
|
# |
1421
|
|
|
if ($this->no_entities) { |
1422
|
|
|
$text = str_replace('&', '&', $text); |
1423
|
|
|
} else { |
1424
|
|
|
# Ampersand-encoding based entirely on Nat Irons's Amputator |
1425
|
|
|
# MT plugin: <http://bumppo.net/projects/amputator/> |
1426
|
|
|
$text = preg_replace('/&(?!#?[xX]?(?:[0-9a-fA-F]+|\w+);)/', |
1427
|
|
|
'&', $text);; |
1428
|
|
|
} |
1429
|
|
|
# Encode remaining <'s |
1430
|
|
|
$text = str_replace('<', '<', $text); |
1431
|
|
|
|
1432
|
|
|
return $text; |
1433
|
|
|
} |
1434
|
|
|
|
1435
|
|
|
|
1436
|
|
|
function doAutoLinks($text) { |
|
|
|
|
1437
|
|
|
$text = preg_replace_callback('{<((https?|ftp|dict):[^\'">\s]+)>}i', |
1438
|
|
|
array(&$this, '_doAutoLinks_url_callback'), $text); |
1439
|
|
|
|
1440
|
|
|
# Email addresses: <[email protected]> |
1441
|
|
|
$text = preg_replace_callback('{ |
1442
|
|
|
< |
1443
|
|
|
(?:mailto:)? |
1444
|
|
|
( |
1445
|
|
|
[-.\w\x80-\xFF]+ |
1446
|
|
|
\@ |
1447
|
|
|
[-a-z0-9\x80-\xFF]+(\.[-a-z0-9\x80-\xFF]+)*\.[a-z]+ |
1448
|
|
|
) |
1449
|
|
|
> |
1450
|
|
|
}xi', |
1451
|
|
|
array(&$this, '_doAutoLinks_email_callback'), $text); |
1452
|
|
|
|
1453
|
|
|
return $text; |
1454
|
|
|
} |
1455
|
|
|
function _doAutoLinks_url_callback($matches) { |
|
|
|
|
1456
|
|
|
$url = $this->encodeAttribute($matches[1]); |
1457
|
|
|
$link = "<a href=\"$url\">$url</a>"; |
1458
|
|
|
return $this->hashPart($link); |
1459
|
|
|
} |
1460
|
|
|
function _doAutoLinks_email_callback($matches) { |
|
|
|
|
1461
|
|
|
$address = $matches[1]; |
1462
|
|
|
$link = $this->encodeEmailAddress($address); |
1463
|
|
|
return $this->hashPart($link); |
1464
|
|
|
} |
1465
|
|
|
|
1466
|
|
|
|
1467
|
|
|
function encodeEmailAddress($addr) { |
|
|
|
|
1468
|
|
|
# |
1469
|
|
|
# Input: an email address, e.g. "[email protected]" |
1470
|
|
|
# |
1471
|
|
|
# Output: the email address as a mailto link, with each character |
1472
|
|
|
# of the address encoded as either a decimal or hex entity, in |
1473
|
|
|
# the hopes of foiling most address harvesting spam bots. E.g.: |
1474
|
|
|
# |
1475
|
|
|
# <p><a href="mailto:foo |
1476
|
|
|
# @example.co |
1477
|
|
|
# m">foo@exampl |
1478
|
|
|
# e.com</a></p> |
1479
|
|
|
# |
1480
|
|
|
# Based by a filter by Matthew Wickline, posted to BBEdit-Talk. |
1481
|
|
|
# With some optimizations by Milian Wolff. |
1482
|
|
|
# |
1483
|
|
|
$addr = "mailto:" . $addr; |
1484
|
|
|
$chars = preg_split('/(?<!^)(?!$)/', $addr); |
1485
|
|
|
$seed = (int)abs(crc32($addr) / strlen($addr)); # Deterministic seed. |
1486
|
|
|
|
1487
|
|
|
foreach ($chars as $key => $char) { |
1488
|
|
|
$ord = ord($char); |
1489
|
|
|
# Ignore non-ascii chars. |
1490
|
|
|
if ($ord < 128) { |
1491
|
|
|
$r = ($seed * (1 + $key)) % 100; # Pseudo-random function. |
1492
|
|
|
# roughly 10% raw, 45% hex, 45% dec |
1493
|
|
|
# '@' *must* be encoded. I insist. |
1494
|
|
|
if ($r > 90 && $char != '@') /* do nothing */; |
1495
|
|
|
else if ($r < 45) $chars[$key] = '&#x'.dechex($ord).';'; |
1496
|
|
|
else $chars[$key] = '&#'.$ord.';'; |
1497
|
|
|
} |
1498
|
|
|
} |
1499
|
|
|
|
1500
|
|
|
$addr = implode('', $chars); |
1501
|
|
|
$text = implode('', array_slice($chars, 7)); # text without `mailto:` |
1502
|
|
|
$addr = "<a href=\"$addr\">$text</a>"; |
1503
|
|
|
|
1504
|
|
|
return $addr; |
1505
|
|
|
} |
1506
|
|
|
|
1507
|
|
|
|
1508
|
|
|
function parseSpan($str) { |
|
|
|
|
1509
|
|
|
# |
1510
|
|
|
# Take the string $str and parse it into tokens, hashing embeded HTML, |
1511
|
|
|
# escaped characters and handling code spans. |
1512
|
|
|
# |
1513
|
|
|
$output = ''; |
1514
|
|
|
|
1515
|
|
|
$span_re = '{ |
1516
|
|
|
( |
1517
|
|
|
\\\\'.$this->escape_chars_re.' |
1518
|
|
|
| |
1519
|
|
|
(?<![`\\\\]) |
1520
|
|
|
`+ # code span marker |
1521
|
|
|
'.( $this->no_markup ? '' : ' |
1522
|
|
|
| |
1523
|
|
|
<!-- .*? --> # comment |
1524
|
|
|
| |
1525
|
|
|
<\?.*?\?> | <%.*?%> # processing instruction |
1526
|
|
|
| |
1527
|
|
|
<[/!$]?[-a-zA-Z0-9:]+ # regular tags |
1528
|
|
|
(?> |
1529
|
|
|
\s |
1530
|
|
|
(?>[^"\'>]+|"[^"]*"|\'[^\']*\')* |
1531
|
|
|
)? |
1532
|
|
|
> |
1533
|
|
|
').' |
1534
|
|
|
) |
1535
|
|
|
}xs'; |
1536
|
|
|
|
1537
|
|
|
while (1) { |
1538
|
|
|
# |
1539
|
|
|
# Each loop iteration seach for either the next tag, the next |
1540
|
|
|
# openning code span marker, or the next escaped character. |
1541
|
|
|
# Each token is then passed to handleSpanToken. |
1542
|
|
|
# |
1543
|
|
|
$parts = preg_split($span_re, $str, 2, PREG_SPLIT_DELIM_CAPTURE); |
1544
|
|
|
|
1545
|
|
|
# Create token from text preceding tag. |
1546
|
|
|
if ($parts[0] != "") { |
1547
|
|
|
$output .= $parts[0]; |
1548
|
|
|
} |
1549
|
|
|
|
1550
|
|
|
# Check if we reach the end. |
1551
|
|
|
if (isset($parts[1])) { |
1552
|
|
|
$output .= $this->handleSpanToken($parts[1], $parts[2]); |
1553
|
|
|
$str = $parts[2]; |
1554
|
|
|
} |
1555
|
|
|
else { |
1556
|
|
|
break; |
1557
|
|
|
} |
1558
|
|
|
} |
1559
|
|
|
|
1560
|
|
|
return $output; |
1561
|
|
|
} |
1562
|
|
|
|
1563
|
|
|
|
1564
|
|
|
function handleSpanToken($token, &$str) { |
|
|
|
|
1565
|
|
|
# |
1566
|
|
|
# Handle $token provided by parseSpan by determining its nature and |
1567
|
|
|
# returning the corresponding value that should replace it. |
1568
|
|
|
# |
1569
|
|
|
switch ($token{0}) { |
1570
|
|
|
case "\\": |
1571
|
|
|
return $this->hashPart("&#". ord($token{1}). ";"); |
1572
|
|
|
case "`": |
1573
|
|
|
# Search for end marker in remaining text. |
1574
|
|
|
if (preg_match('/^(.*?[^`])'.preg_quote($token).'(?!`)(.*)$/sm', |
1575
|
|
|
$str, $matches)) |
1576
|
|
|
{ |
1577
|
|
|
$str = $matches[2]; |
1578
|
|
|
$codespan = $this->makeCodeSpan($matches[1]); |
1579
|
|
|
return $this->hashPart($codespan); |
1580
|
|
|
} |
1581
|
|
|
return $token; // return as text since no ending marker found. |
1582
|
|
|
default: |
1583
|
|
|
return $this->hashPart($token); |
1584
|
|
|
} |
1585
|
|
|
} |
1586
|
|
|
|
1587
|
|
|
|
1588
|
|
|
function outdent($text) { |
|
|
|
|
1589
|
|
|
# |
1590
|
|
|
# Remove one level of line-leading tabs or spaces |
1591
|
|
|
# |
1592
|
|
|
return preg_replace('/^(\t|[ ]{1,'.$this->tab_width.'})/m', '', $text); |
1593
|
|
|
} |
1594
|
|
|
|
1595
|
|
|
|
1596
|
|
|
# String length function for detab. `_initDetab` will create a function to |
1597
|
|
|
# hanlde UTF-8 if the default function does not exist. |
1598
|
|
|
var $utf8_strlen = 'mb_strlen'; |
1599
|
|
|
|
1600
|
|
|
/** |
1601
|
|
|
* @param string $text |
1602
|
|
|
*/ |
1603
|
|
|
function detab($text) { |
|
|
|
|
1604
|
|
|
# |
1605
|
|
|
# Replace tabs with the appropriate amount of space. |
1606
|
|
|
# |
1607
|
|
|
# For each line we separate the line in blocks delemited by |
1608
|
|
|
# tab characters. Then we reconstruct every line by adding the |
1609
|
|
|
# appropriate number of space between each blocks. |
1610
|
|
|
|
1611
|
|
|
$text = preg_replace_callback('/^.*\t.*$/m', |
1612
|
|
|
array(&$this, '_detab_callback'), $text); |
1613
|
|
|
|
1614
|
|
|
return $text; |
1615
|
|
|
} |
1616
|
|
|
function _detab_callback($matches) { |
|
|
|
|
1617
|
|
|
$line = $matches[0]; |
1618
|
|
|
$strlen = $this->utf8_strlen; # strlen function for UTF-8. |
1619
|
|
|
|
1620
|
|
|
# Split in blocks. |
1621
|
|
|
$blocks = explode("\t", $line); |
1622
|
|
|
# Add each blocks to the line. |
1623
|
|
|
$line = $blocks[0]; |
1624
|
|
|
unset($blocks[0]); # Do not add first block twice. |
1625
|
|
|
foreach ($blocks as $block) { |
1626
|
|
|
# Calculate amount of space, insert spaces, insert block. |
1627
|
|
|
$amount = $this->tab_width - |
1628
|
|
|
$strlen($line, 'UTF-8') % $this->tab_width; |
1629
|
|
|
$line .= str_repeat(" ", $amount) . $block; |
1630
|
|
|
} |
1631
|
|
|
return $line; |
1632
|
|
|
} |
1633
|
|
|
function _initDetab() { |
|
|
|
|
1634
|
|
|
# |
1635
|
|
|
# Check for the availability of the function in the `utf8_strlen` property |
1636
|
|
|
# (initially `mb_strlen`). If the function is not available, create a |
1637
|
|
|
# function that will loosely count the number of UTF-8 characters with a |
1638
|
|
|
# regular expression. |
1639
|
|
|
# |
1640
|
|
|
if (function_exists($this->utf8_strlen)) return; |
1641
|
|
|
$this->utf8_strlen = create_function('$text', 'return preg_match_all( |
1642
|
|
|
"/[\\\\x00-\\\\xBF]|[\\\\xC0-\\\\xFF][\\\\x80-\\\\xBF]*/", |
1643
|
|
|
$text, $m);'); |
1644
|
|
|
} |
1645
|
|
|
|
1646
|
|
|
|
1647
|
|
|
function unhash($text) { |
|
|
|
|
1648
|
|
|
# |
1649
|
|
|
# Swap back in all the tags hashed by _HashHTMLBlocks. |
1650
|
|
|
# |
1651
|
|
|
return preg_replace_callback('/(.)\x1A[0-9]+\1/', |
1652
|
|
|
array(&$this, '_unhash_callback'), $text); |
1653
|
|
|
} |
1654
|
|
|
function _unhash_callback($matches) { |
|
|
|
|
1655
|
|
|
return $this->html_hashes[$matches[0]]; |
1656
|
|
|
} |
1657
|
|
|
|
1658
|
|
|
} |
1659
|
|
|
|
1660
|
|
|
|
1661
|
|
|
# |
1662
|
|
|
# Markdown Extra Parser Class |
1663
|
|
|
# |
1664
|
|
|
|
1665
|
|
|
class MarkdownExtra_Parser extends Markdown_Parser { |
1666
|
|
|
|
1667
|
|
|
# Prefix for footnote ids. |
1668
|
|
|
var $fn_id_prefix = ""; |
1669
|
|
|
|
1670
|
|
|
# Optional title attribute for footnote links and backlinks. |
1671
|
|
|
var $fn_link_title = MARKDOWN_FN_LINK_TITLE; |
1672
|
|
|
var $fn_backlink_title = MARKDOWN_FN_BACKLINK_TITLE; |
1673
|
|
|
|
1674
|
|
|
# Optional class attribute for footnote links and backlinks. |
1675
|
|
|
var $fn_link_class = MARKDOWN_FN_LINK_CLASS; |
1676
|
|
|
var $fn_backlink_class = MARKDOWN_FN_BACKLINK_CLASS; |
1677
|
|
|
|
1678
|
|
|
# Predefined abbreviations. |
1679
|
|
|
var $predef_abbr = array(); |
1680
|
|
|
|
1681
|
|
|
|
1682
|
|
|
function MarkdownExtra_Parser() { |
|
|
|
|
1683
|
|
|
# |
1684
|
|
|
# Constructor function. Initialize the parser object. |
1685
|
|
|
# |
1686
|
|
|
# Add extra escapable characters before parent constructor |
1687
|
|
|
# initialize the table. |
1688
|
|
|
$this->escape_chars .= ':|'; |
1689
|
|
|
|
1690
|
|
|
# Insert extra document, block, and span transformations. |
1691
|
|
|
# Parent constructor will do the sorting. |
1692
|
|
|
$this->document_gamut += array( |
1693
|
|
|
"doFencedCodeBlocks" => 5, |
1694
|
|
|
"stripFootnotes" => 15, |
1695
|
|
|
"stripAbbreviations" => 25, |
1696
|
|
|
"appendFootnotes" => 50, |
1697
|
|
|
); |
1698
|
|
|
$this->block_gamut += array( |
1699
|
|
|
"doFencedCodeBlocks" => 5, |
1700
|
|
|
"doTables" => 15, |
1701
|
|
|
"doDefLists" => 45, |
1702
|
|
|
); |
1703
|
|
|
$this->span_gamut += array( |
1704
|
|
|
"doFootnotes" => 5, |
1705
|
|
|
"doAbbreviations" => 70, |
1706
|
|
|
); |
1707
|
|
|
|
1708
|
|
|
parent::Markdown_Parser(); |
|
|
|
|
1709
|
|
|
} |
1710
|
|
|
|
1711
|
|
|
|
1712
|
|
|
# Extra variables used during extra transformations. |
1713
|
|
|
var $footnotes = array(); |
1714
|
|
|
var $footnotes_ordered = array(); |
1715
|
|
|
var $abbr_desciptions = array(); |
1716
|
|
|
var $abbr_word_re = ''; |
1717
|
|
|
|
1718
|
|
|
# Give the current footnote number. |
1719
|
|
|
var $footnote_counter = 1; |
1720
|
|
|
|
1721
|
|
|
|
1722
|
|
|
function setup() { |
|
|
|
|
1723
|
|
|
# |
1724
|
|
|
# Setting up Extra-specific variables. |
1725
|
|
|
# |
1726
|
|
|
parent::setup(); |
1727
|
|
|
|
1728
|
|
|
$this->footnotes = array(); |
1729
|
|
|
$this->footnotes_ordered = array(); |
1730
|
|
|
$this->abbr_desciptions = array(); |
1731
|
|
|
$this->abbr_word_re = ''; |
1732
|
|
|
$this->footnote_counter = 1; |
1733
|
|
|
|
1734
|
|
|
foreach ($this->predef_abbr as $abbr_word => $abbr_desc) { |
1735
|
|
|
if ($this->abbr_word_re) |
1736
|
|
|
$this->abbr_word_re .= '|'; |
1737
|
|
|
$this->abbr_word_re .= preg_quote($abbr_word); |
1738
|
|
|
$this->abbr_desciptions[$abbr_word] = trim($abbr_desc); |
1739
|
|
|
} |
1740
|
|
|
} |
1741
|
|
|
|
1742
|
|
|
function teardown() { |
|
|
|
|
1743
|
|
|
# |
1744
|
|
|
# Clearing Extra-specific variables. |
1745
|
|
|
# |
1746
|
|
|
$this->footnotes = array(); |
1747
|
|
|
$this->footnotes_ordered = array(); |
1748
|
|
|
$this->abbr_desciptions = array(); |
1749
|
|
|
$this->abbr_word_re = ''; |
1750
|
|
|
|
1751
|
|
|
parent::teardown(); |
1752
|
|
|
} |
1753
|
|
|
|
1754
|
|
|
|
1755
|
|
|
### HTML Block Parser ### |
1756
|
|
|
|
1757
|
|
|
# Tags that are always treated as block tags: |
1758
|
|
|
var $block_tags_re = 'p|div|h[1-6]|blockquote|pre|table|dl|ol|ul|address|form|fieldset|iframe|hr|legend'; |
1759
|
|
|
|
1760
|
|
|
# Tags treated as block tags only if the opening tag is alone on it's line: |
1761
|
|
|
var $context_block_tags_re = 'script|noscript|math|ins|del'; |
|
|
|
|
1762
|
|
|
|
1763
|
|
|
# Tags where markdown="1" default to span mode: |
1764
|
|
|
var $contain_span_tags_re = 'p|h[1-6]|li|dd|dt|td|th|legend|address'; |
1765
|
|
|
|
1766
|
|
|
# Tags which must not have their contents modified, no matter where |
1767
|
|
|
# they appear: |
1768
|
|
|
var $clean_tags_re = 'script|math'; |
1769
|
|
|
|
1770
|
|
|
# Tags that do not need to be closed. |
1771
|
|
|
var $auto_close_tags_re = 'hr|img'; |
1772
|
|
|
|
1773
|
|
|
|
1774
|
|
|
function hashHTMLBlocks($text) { |
|
|
|
|
1775
|
|
|
# |
1776
|
|
|
# Hashify HTML Blocks and "clean tags". |
1777
|
|
|
# |
1778
|
|
|
# We only want to do this for block-level HTML tags, such as headers, |
1779
|
|
|
# lists, and tables. That's because we still want to wrap <p>s around |
1780
|
|
|
# "paragraphs" that are wrapped in non-block-level tags, such as anchors, |
1781
|
|
|
# phrase emphasis, and spans. The list of tags we're looking for is |
1782
|
|
|
# hard-coded. |
1783
|
|
|
# |
1784
|
|
|
# This works by calling _HashHTMLBlocks_InMarkdown, which then calls |
1785
|
|
|
# _HashHTMLBlocks_InHTML when it encounter block tags. When the markdown="1" |
1786
|
|
|
# attribute is found whitin a tag, _HashHTMLBlocks_InHTML calls back |
1787
|
|
|
# _HashHTMLBlocks_InMarkdown to handle the Markdown syntax within the tag. |
1788
|
|
|
# These two functions are calling each other. It's recursive! |
1789
|
|
|
# |
1790
|
|
|
# |
1791
|
|
|
# Call the HTML-in-Markdown hasher. |
1792
|
|
|
# |
1793
|
|
|
list($text, ) = $this->_hashHTMLBlocks_inMarkdown($text); |
1794
|
|
|
|
1795
|
|
|
return $text; |
1796
|
|
|
} |
1797
|
|
|
function _hashHTMLBlocks_inMarkdown($text, $indent = 0, |
|
|
|
|
1798
|
|
|
$enclosing_tag_re = '', $span = false) |
1799
|
|
|
{ |
1800
|
|
|
# |
1801
|
|
|
# Parse markdown text, calling _HashHTMLBlocks_InHTML for block tags. |
1802
|
|
|
# |
1803
|
|
|
# * $indent is the number of space to be ignored when checking for code |
1804
|
|
|
# blocks. This is important because if we don't take the indent into |
1805
|
|
|
# account, something like this (which looks right) won't work as expected: |
1806
|
|
|
# |
1807
|
|
|
# <div> |
1808
|
|
|
# <div markdown="1"> |
1809
|
|
|
# Hello World. <-- Is this a Markdown code block or text? |
1810
|
|
|
# </div> <-- Is this a Markdown code block or a real tag? |
1811
|
|
|
# <div> |
1812
|
|
|
# |
1813
|
|
|
# If you don't like this, just don't indent the tag on which |
1814
|
|
|
# you apply the markdown="1" attribute. |
1815
|
|
|
# |
1816
|
|
|
# * If $enclosing_tag_re is not empty, stops at the first unmatched closing |
1817
|
|
|
# tag with that name. Nested tags supported. |
1818
|
|
|
# |
1819
|
|
|
# * If $span is true, text inside must treated as span. So any double |
1820
|
|
|
# newline will be replaced by a single newline so that it does not create |
1821
|
|
|
# paragraphs. |
1822
|
|
|
# |
1823
|
|
|
# Returns an array of that form: ( processed text , remaining text ) |
1824
|
|
|
# |
1825
|
|
|
if ($text === '') return array('', ''); |
1826
|
|
|
|
1827
|
|
|
# Regex to check for the presense of newlines around a block tag. |
1828
|
|
|
$newline_before_re = '/(?:^\n?|\n\n)*$/'; |
1829
|
|
|
$newline_after_re = |
1830
|
|
|
'{ |
1831
|
|
|
^ # Start of text following the tag. |
1832
|
|
|
(?>[ ]*<!--.*?-->)? # Optional comment. |
1833
|
|
|
[ ]*\n # Must be followed by newline. |
1834
|
|
|
}xs'; |
1835
|
|
|
|
1836
|
|
|
# Regex to match any tag. |
1837
|
|
|
$block_tag_re = |
1838
|
|
|
'{ |
1839
|
|
|
( # $2: Capture hole tag. |
1840
|
|
|
</? # Any opening or closing tag. |
1841
|
|
|
(?> # Tag name. |
1842
|
|
|
'.$this->block_tags_re.' | |
1843
|
|
|
'.$this->context_block_tags_re.' | |
1844
|
|
|
'.$this->clean_tags_re.' | |
1845
|
|
|
(?!\s)'.$enclosing_tag_re.' |
1846
|
|
|
) |
1847
|
|
|
(?: |
1848
|
|
|
(?=[\s"\'/a-zA-Z0-9]) # Allowed characters after tag name. |
1849
|
|
|
(?> |
1850
|
|
|
".*?" | # Double quotes (can contain `>`) |
1851
|
|
|
\'.*?\' | # Single quotes (can contain `>`) |
1852
|
|
|
.+? # Anything but quotes and `>`. |
1853
|
|
|
)*? |
1854
|
|
|
)? |
1855
|
|
|
> # End of tag. |
1856
|
|
|
| |
1857
|
|
|
<!-- .*? --> # HTML Comment |
1858
|
|
|
| |
1859
|
|
|
<\?.*?\?> | <%.*?%> # Processing instruction |
1860
|
|
|
| |
1861
|
|
|
<!\[CDATA\[.*?\]\]> # CData Block |
1862
|
|
|
| |
1863
|
|
|
# Code span marker |
1864
|
|
|
`+ |
1865
|
|
|
'. ( !$span ? ' # If not in span. |
1866
|
|
|
| |
1867
|
|
|
# Indented code block |
1868
|
|
|
(?> ^[ ]*\n? | \n[ ]*\n ) |
1869
|
|
|
[ ]{'.($indent+4).'}[^\n]* \n |
1870
|
|
|
(?> |
1871
|
|
|
(?: [ ]{'.($indent+4).'}[^\n]* | [ ]* ) \n |
1872
|
|
|
)* |
1873
|
|
|
| |
1874
|
|
|
# Fenced code block marker |
1875
|
|
|
(?> ^ | \n ) |
1876
|
|
|
[ ]{'.($indent).'}~~~+[ ]*\n |
1877
|
|
|
' : '' ). ' # End (if not is span). |
1878
|
|
|
) |
1879
|
|
|
}xs'; |
1880
|
|
|
|
1881
|
|
|
|
1882
|
|
|
$depth = 0; # Current depth inside the tag tree. |
1883
|
|
|
$parsed = ""; # Parsed text that will be returned. |
1884
|
|
|
|
1885
|
|
|
# |
1886
|
|
|
# Loop through every tag until we find the closing tag of the parent |
1887
|
|
|
# or loop until reaching the end of text if no parent tag specified. |
1888
|
|
|
# |
1889
|
|
|
do { |
1890
|
|
|
# |
1891
|
|
|
# Split the text using the first $tag_match pattern found. |
1892
|
|
|
# Text before pattern will be first in the array, text after |
1893
|
|
|
# pattern will be at the end, and between will be any catches made |
1894
|
|
|
# by the pattern. |
1895
|
|
|
# |
1896
|
|
|
$parts = preg_split($block_tag_re, $text, 2, |
1897
|
|
|
PREG_SPLIT_DELIM_CAPTURE); |
1898
|
|
|
|
1899
|
|
|
# If in Markdown span mode, add a empty-string span-level hash |
1900
|
|
|
# after each newline to prevent triggering any block element. |
1901
|
|
|
if ($span) { |
1902
|
|
|
$void = $this->hashPart("", ':'); |
1903
|
|
|
$newline = "$void\n"; |
1904
|
|
|
$parts[0] = $void . str_replace("\n", $newline, $parts[0]) . $void; |
1905
|
|
|
} |
1906
|
|
|
|
1907
|
|
|
$parsed .= $parts[0]; # Text before current tag. |
1908
|
|
|
|
1909
|
|
|
# If end of $text has been reached. Stop loop. |
1910
|
|
|
if (count($parts) < 3) { |
1911
|
|
|
$text = ""; |
1912
|
|
|
break; |
1913
|
|
|
} |
1914
|
|
|
|
1915
|
|
|
$tag = $parts[1]; # Tag to handle. |
1916
|
|
|
$text = $parts[2]; # Remaining text after current tag. |
1917
|
|
|
$tag_re = preg_quote($tag); # For use in a regular expression. |
|
|
|
|
1918
|
|
|
|
1919
|
|
|
# |
1920
|
|
|
# Check for: Code span marker |
1921
|
|
|
# |
1922
|
|
|
if ($tag{0} == "`") { |
1923
|
|
|
# Find corresponding end marker. |
1924
|
|
|
$tag_re = preg_quote($tag); |
1925
|
|
View Code Duplication |
if (preg_match('{^(?>.+?|\n(?!\n))*?(?<!`)'.$tag_re.'(?!`)}', |
|
|
|
|
1926
|
|
|
$text, $matches)) |
1927
|
|
|
{ |
1928
|
|
|
# End marker found: pass text unchanged until marker. |
1929
|
|
|
$parsed .= $tag . $matches[0]; |
1930
|
|
|
$text = substr($text, strlen($matches[0])); |
1931
|
|
|
} |
1932
|
|
|
else { |
1933
|
|
|
# Unmatched marker: just skip it. |
1934
|
|
|
$parsed .= $tag; |
1935
|
|
|
} |
1936
|
|
|
} |
1937
|
|
|
# |
1938
|
|
|
# Check for: Indented code block or fenced code block marker. |
1939
|
|
|
# |
1940
|
|
|
else if ($tag{0} == "\n" || $tag{0} == "~") { |
1941
|
|
|
if ($tag{1} == "\n" || $tag{1} == " ") { |
1942
|
|
|
# Indented code block: pass it unchanged, will be handled |
1943
|
|
|
# later. |
1944
|
|
|
$parsed .= $tag; |
1945
|
|
|
} |
1946
|
|
|
else { |
1947
|
|
|
# Fenced code block marker: find matching end marker. |
1948
|
|
|
$tag_re = preg_quote(trim($tag)); |
1949
|
|
View Code Duplication |
if (preg_match('{^(?>.*\n)+?'.$tag_re.' *\n}', $text, |
|
|
|
|
1950
|
|
|
$matches)) |
1951
|
|
|
{ |
1952
|
|
|
# End marker found: pass text unchanged until marker. |
1953
|
|
|
$parsed .= $tag . $matches[0]; |
1954
|
|
|
$text = substr($text, strlen($matches[0])); |
1955
|
|
|
} |
1956
|
|
|
else { |
1957
|
|
|
# No end marker: just skip it. |
1958
|
|
|
$parsed .= $tag; |
1959
|
|
|
} |
1960
|
|
|
} |
1961
|
|
|
} |
1962
|
|
|
# |
1963
|
|
|
# Check for: Opening Block level tag or |
1964
|
|
|
# Opening Context Block tag (like ins and del) |
1965
|
|
|
# used as a block tag (tag is alone on it's line). |
1966
|
|
|
# |
1967
|
|
|
else if (preg_match('{^<(?:'.$this->block_tags_re.')\b}', $tag) || |
1968
|
|
|
( preg_match('{^<(?:'.$this->context_block_tags_re.')\b}', $tag) && |
1969
|
|
|
preg_match($newline_before_re, $parsed) && |
1970
|
|
|
preg_match($newline_after_re, $text) ) |
1971
|
|
|
) |
1972
|
|
|
{ |
1973
|
|
|
# Need to parse tag and following text using the HTML parser. |
1974
|
|
|
list($block_text, $text) = |
1975
|
|
|
$this->_hashHTMLBlocks_inHTML($tag . $text, "hashBlock", true); |
1976
|
|
|
|
1977
|
|
|
# Make sure it stays outside of any paragraph by adding newlines. |
1978
|
|
|
$parsed .= "\n\n$block_text\n\n"; |
1979
|
|
|
} |
1980
|
|
|
# |
1981
|
|
|
# Check for: Clean tag (like script, math) |
1982
|
|
|
# HTML Comments, processing instructions. |
1983
|
|
|
# |
1984
|
|
|
else if (preg_match('{^<(?:'.$this->clean_tags_re.')\b}', $tag) || |
1985
|
|
|
$tag{1} == '!' || $tag{1} == '?') |
1986
|
|
|
{ |
1987
|
|
|
# Need to parse tag and following text using the HTML parser. |
1988
|
|
|
# (don't check for markdown attribute) |
1989
|
|
|
list($block_text, $text) = |
1990
|
|
|
$this->_hashHTMLBlocks_inHTML($tag . $text, "hashClean", false); |
1991
|
|
|
|
1992
|
|
|
$parsed .= $block_text; |
1993
|
|
|
} |
1994
|
|
|
# |
1995
|
|
|
# Check for: Tag with same name as enclosing tag. |
1996
|
|
|
# |
1997
|
|
|
else if ($enclosing_tag_re !== '' && |
1998
|
|
|
# Same name as enclosing tag. |
1999
|
|
|
preg_match('{^</?(?:'.$enclosing_tag_re.')\b}', $tag)) |
2000
|
|
|
{ |
2001
|
|
|
# |
2002
|
|
|
# Increase/decrease nested tag count. |
2003
|
|
|
# |
2004
|
|
View Code Duplication |
if ($tag{1} == '/') $depth--; |
|
|
|
|
2005
|
|
|
else if ($tag{strlen($tag)-2} != '/') $depth++; |
2006
|
|
|
|
2007
|
|
|
if ($depth < 0) { |
2008
|
|
|
# |
2009
|
|
|
# Going out of parent element. Clean up and break so we |
2010
|
|
|
# return to the calling function. |
2011
|
|
|
# |
2012
|
|
|
$text = $tag . $text; |
2013
|
|
|
break; |
2014
|
|
|
} |
2015
|
|
|
|
2016
|
|
|
$parsed .= $tag; |
2017
|
|
|
} |
2018
|
|
|
else { |
2019
|
|
|
$parsed .= $tag; |
2020
|
|
|
} |
2021
|
|
|
} while ($depth >= 0); |
2022
|
|
|
|
2023
|
|
|
return array($parsed, $text); |
2024
|
|
|
} |
2025
|
|
|
|
2026
|
|
|
/** |
2027
|
|
|
* @param string $text |
2028
|
|
|
* @param string $hash_method |
2029
|
|
|
* @param boolean $md_attr |
2030
|
|
|
*/ |
2031
|
|
|
function _hashHTMLBlocks_inHTML($text, $hash_method, $md_attr) { |
|
|
|
|
2032
|
|
|
# |
2033
|
|
|
# Parse HTML, calling _HashHTMLBlocks_InMarkdown for block tags. |
2034
|
|
|
# |
2035
|
|
|
# * Calls $hash_method to convert any blocks. |
2036
|
|
|
# * Stops when the first opening tag closes. |
2037
|
|
|
# * $md_attr indicate if the use of the `markdown="1"` attribute is allowed. |
2038
|
|
|
# (it is not inside clean tags) |
2039
|
|
|
# |
2040
|
|
|
# Returns an array of that form: ( processed text , remaining text ) |
2041
|
|
|
# |
2042
|
|
|
if ($text === '') return array('', ''); |
2043
|
|
|
|
2044
|
|
|
# Regex to match `markdown` attribute inside of a tag. |
2045
|
|
|
$markdown_attr_re = ' |
2046
|
|
|
{ |
2047
|
|
|
\s* # Eat whitespace before the `markdown` attribute |
2048
|
|
|
markdown |
2049
|
|
|
\s*=\s* |
2050
|
|
|
(?> |
2051
|
|
|
(["\']) # $1: quote delimiter |
2052
|
|
|
(.*?) # $2: attribute value |
2053
|
|
|
\1 # matching delimiter |
2054
|
|
|
| |
2055
|
|
|
([^\s>]*) # $3: unquoted attribute value |
2056
|
|
|
) |
2057
|
|
|
() # $4: make $3 always defined (avoid warnings) |
2058
|
|
|
}xs'; |
2059
|
|
|
|
2060
|
|
|
# Regex to match any tag. |
2061
|
|
|
$tag_re = '{ |
2062
|
|
|
( # $2: Capture hole tag. |
2063
|
|
|
</? # Any opening or closing tag. |
2064
|
|
|
[\w:$]+ # Tag name. |
2065
|
|
|
(?: |
2066
|
|
|
(?=[\s"\'/a-zA-Z0-9]) # Allowed characters after tag name. |
2067
|
|
|
(?> |
2068
|
|
|
".*?" | # Double quotes (can contain `>`) |
2069
|
|
|
\'.*?\' | # Single quotes (can contain `>`) |
2070
|
|
|
.+? # Anything but quotes and `>`. |
2071
|
|
|
)*? |
2072
|
|
|
)? |
2073
|
|
|
> # End of tag. |
2074
|
|
|
| |
2075
|
|
|
<!-- .*? --> # HTML Comment |
2076
|
|
|
| |
2077
|
|
|
<\?.*?\?> | <%.*?%> # Processing instruction |
2078
|
|
|
| |
2079
|
|
|
<!\[CDATA\[.*?\]\]> # CData Block |
2080
|
|
|
) |
2081
|
|
|
}xs'; |
2082
|
|
|
|
2083
|
|
|
$original_text = $text; # Save original text in case of faliure. |
2084
|
|
|
|
2085
|
|
|
$depth = 0; # Current depth inside the tag tree. |
2086
|
|
|
$block_text = ""; # Temporary text holder for current text. |
2087
|
|
|
$parsed = ""; # Parsed text that will be returned. |
2088
|
|
|
|
2089
|
|
|
# |
2090
|
|
|
# Get the name of the starting tag. |
2091
|
|
|
# (This pattern makes $base_tag_name_re safe without quoting.) |
2092
|
|
|
# |
2093
|
|
|
if (preg_match('/^<([\w:$]*)\b/', $text, $matches)) |
2094
|
|
|
$base_tag_name_re = $matches[1]; |
2095
|
|
|
|
2096
|
|
|
# |
2097
|
|
|
# Loop through every tag until we find the corresponding closing tag. |
2098
|
|
|
# |
2099
|
|
|
do { |
2100
|
|
|
# |
2101
|
|
|
# Split the text using the first $tag_match pattern found. |
2102
|
|
|
# Text before pattern will be first in the array, text after |
2103
|
|
|
# pattern will be at the end, and between will be any catches made |
2104
|
|
|
# by the pattern. |
2105
|
|
|
# |
2106
|
|
|
$parts = preg_split($tag_re, $text, 2, PREG_SPLIT_DELIM_CAPTURE); |
2107
|
|
|
|
2108
|
|
|
if (count($parts) < 3) { |
2109
|
|
|
# |
2110
|
|
|
# End of $text reached with unbalenced tag(s). |
2111
|
|
|
# In that case, we return original text unchanged and pass the |
2112
|
|
|
# first character as filtered to prevent an infinite loop in the |
2113
|
|
|
# parent function. |
2114
|
|
|
# |
2115
|
|
|
return array($original_text{0}, substr($original_text, 1)); |
2116
|
|
|
} |
2117
|
|
|
|
2118
|
|
|
$block_text .= $parts[0]; # Text before current tag. |
2119
|
|
|
$tag = $parts[1]; # Tag to handle. |
2120
|
|
|
$text = $parts[2]; # Remaining text after current tag. |
2121
|
|
|
|
2122
|
|
|
# |
2123
|
|
|
# Check for: Auto-close tag (like <hr/>) |
2124
|
|
|
# Comments and Processing Instructions. |
2125
|
|
|
# |
2126
|
|
|
if (preg_match('{^</?(?:'.$this->auto_close_tags_re.')\b}', $tag) || |
2127
|
|
|
$tag{1} == '!' || $tag{1} == '?') |
2128
|
|
|
{ |
2129
|
|
|
# Just add the tag to the block as if it was text. |
2130
|
|
|
$block_text .= $tag; |
2131
|
|
|
} |
2132
|
|
|
else { |
2133
|
|
|
# |
2134
|
|
|
# Increase/decrease nested tag count. Only do so if |
2135
|
|
|
# the tag's name match base tag's. |
2136
|
|
|
# |
2137
|
|
|
if (preg_match('{^</?'.$base_tag_name_re.'\b}', $tag)) { |
|
|
|
|
2138
|
|
View Code Duplication |
if ($tag{1} == '/') $depth--; |
|
|
|
|
2139
|
|
|
else if ($tag{strlen($tag)-2} != '/') $depth++; |
2140
|
|
|
} |
2141
|
|
|
|
2142
|
|
|
# |
2143
|
|
|
# Check for `markdown="1"` attribute and handle it. |
2144
|
|
|
# |
2145
|
|
|
if ($md_attr && |
2146
|
|
|
preg_match($markdown_attr_re, $tag, $attr_m) && |
2147
|
|
|
preg_match('/^1|block|span$/', $attr_m[2] . $attr_m[3])) |
2148
|
|
|
{ |
2149
|
|
|
# Remove `markdown` attribute from opening tag. |
2150
|
|
|
$tag = preg_replace($markdown_attr_re, '', $tag); |
2151
|
|
|
|
2152
|
|
|
# Check if text inside this tag must be parsed in span mode. |
2153
|
|
|
$this->mode = $attr_m[2] . $attr_m[3]; |
|
|
|
|
2154
|
|
|
$span_mode = $this->mode == 'span' || $this->mode != 'block' && |
2155
|
|
|
preg_match('{^<(?:'.$this->contain_span_tags_re.')\b}', $tag); |
2156
|
|
|
|
2157
|
|
|
# Calculate indent before tag. |
2158
|
|
|
if (preg_match('/(?:^|\n)( *?)(?! ).*?$/', $block_text, $matches)) { |
2159
|
|
|
$strlen = $this->utf8_strlen; |
2160
|
|
|
$indent = $strlen($matches[1], 'UTF-8'); |
2161
|
|
|
} else { |
2162
|
|
|
$indent = 0; |
2163
|
|
|
} |
2164
|
|
|
|
2165
|
|
|
# End preceding block with this tag. |
2166
|
|
|
$block_text .= $tag; |
2167
|
|
|
$parsed .= $this->$hash_method($block_text); |
2168
|
|
|
|
2169
|
|
|
# Get enclosing tag name for the ParseMarkdown function. |
2170
|
|
|
# (This pattern makes $tag_name_re safe without quoting.) |
2171
|
|
|
preg_match('/^<([\w:$]*)\b/', $tag, $matches); |
2172
|
|
|
$tag_name_re = $matches[1]; |
2173
|
|
|
|
2174
|
|
|
# Parse the content using the HTML-in-Markdown parser. |
2175
|
|
|
list ($block_text, $text) |
2176
|
|
|
= $this->_hashHTMLBlocks_inMarkdown($text, $indent, |
2177
|
|
|
$tag_name_re, $span_mode); |
2178
|
|
|
|
2179
|
|
|
# Outdent markdown text. |
2180
|
|
|
if ($indent > 0) { |
2181
|
|
|
$block_text = preg_replace("/^[ ]{1,$indent}/m", "", |
2182
|
|
|
$block_text); |
2183
|
|
|
} |
2184
|
|
|
|
2185
|
|
|
# Append tag content to parsed text. |
2186
|
|
|
if (!$span_mode) $parsed .= "\n\n$block_text\n\n"; |
2187
|
|
|
else $parsed .= "$block_text"; |
2188
|
|
|
|
2189
|
|
|
# Start over a new block. |
2190
|
|
|
$block_text = ""; |
2191
|
|
|
} |
2192
|
|
|
else $block_text .= $tag; |
2193
|
|
|
} |
2194
|
|
|
|
2195
|
|
|
} while ($depth > 0); |
2196
|
|
|
|
2197
|
|
|
# |
2198
|
|
|
# Hash last block text that wasn't processed inside the loop. |
2199
|
|
|
# |
2200
|
|
|
$parsed .= $this->$hash_method($block_text); |
2201
|
|
|
|
2202
|
|
|
return array($parsed, $text); |
2203
|
|
|
} |
2204
|
|
|
|
2205
|
|
|
|
2206
|
|
|
function hashClean($text) { |
|
|
|
|
2207
|
|
|
# |
2208
|
|
|
# Called whenever a tag must be hashed when a function insert a "clean" tag |
2209
|
|
|
# in $text, it pass through this function and is automaticaly escaped, |
2210
|
|
|
# blocking invalid nested overlap. |
2211
|
|
|
# |
2212
|
|
|
return $this->hashPart($text, 'C'); |
2213
|
|
|
} |
2214
|
|
|
|
2215
|
|
|
|
2216
|
|
View Code Duplication |
function doHeaders($text) { |
|
|
|
|
2217
|
|
|
# |
2218
|
|
|
# Redefined to add id attribute support. |
2219
|
|
|
# |
2220
|
|
|
# Setext-style headers: |
2221
|
|
|
# Header 1 {#header1} |
2222
|
|
|
# ======== |
2223
|
|
|
# |
2224
|
|
|
# Header 2 {#header2} |
2225
|
|
|
# -------- |
2226
|
|
|
# |
2227
|
|
|
$text = preg_replace_callback( |
2228
|
|
|
'{ |
2229
|
|
|
(^.+?) # $1: Header text |
2230
|
|
|
(?:[ ]+\{\#([-_:a-zA-Z0-9]+)\})? # $2: Id attribute |
2231
|
|
|
[ ]*\n(=+|-+)[ ]*\n+ # $3: Header footer |
2232
|
|
|
}mx', |
2233
|
|
|
array(&$this, '_doHeaders_callback_setext'), $text); |
2234
|
|
|
|
2235
|
|
|
# atx-style headers: |
2236
|
|
|
# # Header 1 {#header1} |
2237
|
|
|
# ## Header 2 {#header2} |
2238
|
|
|
# ## Header 2 with closing hashes ## {#header3} |
2239
|
|
|
# ... |
2240
|
|
|
# ###### Header 6 {#header2} |
2241
|
|
|
# |
2242
|
|
|
$text = preg_replace_callback('{ |
2243
|
|
|
^(\#{1,6}) # $1 = string of #\'s |
2244
|
|
|
[ ]* |
2245
|
|
|
(.+?) # $2 = Header text |
2246
|
|
|
[ ]* |
2247
|
|
|
\#* # optional closing #\'s (not counted) |
2248
|
|
|
(?:[ ]+\{\#([-_:a-zA-Z0-9]+)\})? # id attribute |
2249
|
|
|
[ ]* |
2250
|
|
|
\n+ |
2251
|
|
|
}xm', |
2252
|
|
|
array(&$this, '_doHeaders_callback_atx'), $text); |
2253
|
|
|
|
2254
|
|
|
return $text; |
2255
|
|
|
} |
2256
|
|
|
function _doHeaders_attr($attr) { |
|
|
|
|
2257
|
|
|
if (empty($attr)) return ""; |
2258
|
|
|
return " id=\"$attr\""; |
2259
|
|
|
} |
2260
|
|
|
function _doHeaders_callback_setext($matches) { |
|
|
|
|
2261
|
|
View Code Duplication |
if ($matches[3] == '-' && preg_match('{^- }', $matches[1])) |
|
|
|
|
2262
|
|
|
return $matches[0]; |
2263
|
|
|
$level = $matches[3]{0} == '=' ? 1 : 2; |
2264
|
|
|
$attr = $this->_doHeaders_attr($id =& $matches[2]); |
2265
|
|
|
$block = "<h$level$attr>".$this->runSpanGamut($matches[1])."</h$level>"; |
2266
|
|
|
return "\n" . $this->hashBlock($block) . "\n\n"; |
2267
|
|
|
} |
2268
|
|
|
function _doHeaders_callback_atx($matches) { |
|
|
|
|
2269
|
|
|
$level = strlen($matches[1]); |
2270
|
|
|
$attr = $this->_doHeaders_attr($id =& $matches[3]); |
2271
|
|
|
$block = "<h$level$attr>".$this->runSpanGamut($matches[2])."</h$level>"; |
2272
|
|
|
return "\n" . $this->hashBlock($block) . "\n\n"; |
2273
|
|
|
} |
2274
|
|
|
|
2275
|
|
|
|
2276
|
|
|
function doTables($text) { |
|
|
|
|
2277
|
|
|
# |
2278
|
|
|
# Form HTML tables. |
2279
|
|
|
# |
2280
|
|
|
$less_than_tab = $this->tab_width - 1; |
2281
|
|
|
# |
2282
|
|
|
# Find tables with leading pipe. |
2283
|
|
|
# |
2284
|
|
|
# | Header 1 | Header 2 |
2285
|
|
|
# | -------- | -------- |
2286
|
|
|
# | Cell 1 | Cell 2 |
2287
|
|
|
# | Cell 3 | Cell 4 |
2288
|
|
|
# |
2289
|
|
|
$text = preg_replace_callback(' |
2290
|
|
|
{ |
2291
|
|
|
^ # Start of a line |
2292
|
|
|
[ ]{0,'.$less_than_tab.'} # Allowed whitespace. |
2293
|
|
|
[|] # Optional leading pipe (present) |
2294
|
|
|
(.+) \n # $1: Header row (at least one pipe) |
2295
|
|
|
|
2296
|
|
|
[ ]{0,'.$less_than_tab.'} # Allowed whitespace. |
2297
|
|
|
[|] ([ ]*[-:]+[-| :]*) \n # $2: Header underline |
2298
|
|
|
|
2299
|
|
|
( # $3: Cells |
2300
|
|
|
(?> |
2301
|
|
|
[ ]* # Allowed whitespace. |
2302
|
|
|
[|] .* \n # Row content. |
2303
|
|
|
)* |
2304
|
|
|
) |
2305
|
|
|
(?=\n|\Z) # Stop at final double newline. |
2306
|
|
|
}xm', |
2307
|
|
|
array(&$this, '_doTable_leadingPipe_callback'), $text); |
2308
|
|
|
|
2309
|
|
|
# |
2310
|
|
|
# Find tables without leading pipe. |
2311
|
|
|
# |
2312
|
|
|
# Header 1 | Header 2 |
2313
|
|
|
# -------- | -------- |
2314
|
|
|
# Cell 1 | Cell 2 |
2315
|
|
|
# Cell 3 | Cell 4 |
2316
|
|
|
# |
2317
|
|
|
$text = preg_replace_callback(' |
2318
|
|
|
{ |
2319
|
|
|
^ # Start of a line |
2320
|
|
|
[ ]{0,'.$less_than_tab.'} # Allowed whitespace. |
2321
|
|
|
(\S.*[|].*) \n # $1: Header row (at least one pipe) |
2322
|
|
|
|
2323
|
|
|
[ ]{0,'.$less_than_tab.'} # Allowed whitespace. |
2324
|
|
|
([-:]+[ ]*[|][-| :]*) \n # $2: Header underline |
2325
|
|
|
|
2326
|
|
|
( # $3: Cells |
2327
|
|
|
(?> |
2328
|
|
|
.* [|] .* \n # Row content |
2329
|
|
|
)* |
2330
|
|
|
) |
2331
|
|
|
(?=\n|\Z) # Stop at final double newline. |
2332
|
|
|
}xm', |
2333
|
|
|
array(&$this, '_DoTable_callback'), $text); |
2334
|
|
|
|
2335
|
|
|
return $text; |
2336
|
|
|
} |
2337
|
|
|
function _doTable_leadingPipe_callback($matches) { |
|
|
|
|
2338
|
|
|
$head = $matches[1]; |
2339
|
|
|
$underline = $matches[2]; |
2340
|
|
|
$content = $matches[3]; |
2341
|
|
|
|
2342
|
|
|
# Remove leading pipe for each row. |
2343
|
|
|
$content = preg_replace('/^ *[|]/m', '', $content); |
2344
|
|
|
|
2345
|
|
|
return $this->_doTable_callback(array($matches[0], $head, $underline, $content)); |
2346
|
|
|
} |
2347
|
|
|
function _doTable_callback($matches) { |
|
|
|
|
2348
|
|
|
$head = $matches[1]; |
2349
|
|
|
$underline = $matches[2]; |
2350
|
|
|
$content = $matches[3]; |
2351
|
|
|
|
2352
|
|
|
# Remove any tailing pipes for each line. |
2353
|
|
|
$head = preg_replace('/[|] *$/m', '', $head); |
2354
|
|
|
$underline = preg_replace('/[|] *$/m', '', $underline); |
2355
|
|
|
$content = preg_replace('/[|] *$/m', '', $content); |
2356
|
|
|
|
2357
|
|
|
# Reading alignement from header underline. |
2358
|
|
|
$separators = preg_split('/ *[|] */', $underline); |
2359
|
|
|
foreach ($separators as $n => $s) { |
2360
|
|
|
if (preg_match('/^ *-+: *$/', $s)) $attr[$n] = ' align="right"'; |
|
|
|
|
2361
|
|
|
else if (preg_match('/^ *:-+: *$/', $s))$attr[$n] = ' align="center"'; |
|
|
|
|
2362
|
|
|
else if (preg_match('/^ *:-+ *$/', $s)) $attr[$n] = ' align="left"'; |
2363
|
|
|
else $attr[$n] = ''; |
2364
|
|
|
} |
2365
|
|
|
|
2366
|
|
|
# Parsing span elements, including code spans, character escapes, |
2367
|
|
|
# and inline HTML tags, so that pipes inside those gets ignored. |
2368
|
|
|
$head = $this->parseSpan($head); |
2369
|
|
|
$headers = preg_split('/ *[|] */', $head); |
2370
|
|
|
$col_count = count($headers); |
2371
|
|
|
|
2372
|
|
|
# Write column headers. |
2373
|
|
|
$text = "<table>\n"; |
2374
|
|
|
$text .= "<thead>\n"; |
2375
|
|
|
$text .= "<tr>\n"; |
2376
|
|
|
foreach ($headers as $n => $header) |
2377
|
|
|
$text .= " <th$attr[$n]>".$this->runSpanGamut(trim($header))."</th>\n"; |
2378
|
|
|
$text .= "</tr>\n"; |
2379
|
|
|
$text .= "</thead>\n"; |
2380
|
|
|
|
2381
|
|
|
# Split content by row. |
2382
|
|
|
$rows = explode("\n", trim($content, "\n")); |
2383
|
|
|
|
2384
|
|
|
$text .= "<tbody>\n"; |
2385
|
|
|
foreach ($rows as $row) { |
2386
|
|
|
# Parsing span elements, including code spans, character escapes, |
2387
|
|
|
# and inline HTML tags, so that pipes inside those gets ignored. |
2388
|
|
|
$row = $this->parseSpan($row); |
2389
|
|
|
|
2390
|
|
|
# Split row by cell. |
2391
|
|
|
$row_cells = preg_split('/ *[|] */', $row, $col_count); |
2392
|
|
|
$row_cells = array_pad($row_cells, $col_count, ''); |
2393
|
|
|
|
2394
|
|
|
$text .= "<tr>\n"; |
2395
|
|
|
foreach ($row_cells as $n => $cell) |
2396
|
|
|
$text .= " <td$attr[$n]>".$this->runSpanGamut(trim($cell))."</td>\n"; |
2397
|
|
|
$text .= "</tr>\n"; |
2398
|
|
|
} |
2399
|
|
|
$text .= "</tbody>\n"; |
2400
|
|
|
$text .= "</table>"; |
2401
|
|
|
|
2402
|
|
|
return $this->hashBlock($text) . "\n"; |
2403
|
|
|
} |
2404
|
|
|
|
2405
|
|
|
|
2406
|
|
|
function doDefLists($text) { |
|
|
|
|
2407
|
|
|
# |
2408
|
|
|
# Form HTML definition lists. |
2409
|
|
|
# |
2410
|
|
|
$less_than_tab = $this->tab_width - 1; |
2411
|
|
|
|
2412
|
|
|
# Re-usable pattern to match any entire dl list: |
2413
|
|
|
$whole_list_re = '(?> |
2414
|
|
|
( # $1 = whole list |
2415
|
|
|
( # $2 |
2416
|
|
|
[ ]{0,'.$less_than_tab.'} |
2417
|
|
|
((?>.*\S.*\n)+) # $3 = defined term |
2418
|
|
|
\n? |
2419
|
|
|
[ ]{0,'.$less_than_tab.'}:[ ]+ # colon starting definition |
2420
|
|
|
) |
2421
|
|
|
(?s:.+?) |
2422
|
|
|
( # $4 |
2423
|
|
|
\z |
2424
|
|
|
| |
2425
|
|
|
\n{2,} |
2426
|
|
|
(?=\S) |
2427
|
|
|
(?! # Negative lookahead for another term |
2428
|
|
|
[ ]{0,'.$less_than_tab.'} |
2429
|
|
|
(?: \S.*\n )+? # defined term |
2430
|
|
|
\n? |
2431
|
|
|
[ ]{0,'.$less_than_tab.'}:[ ]+ # colon starting definition |
2432
|
|
|
) |
2433
|
|
|
(?! # Negative lookahead for another definition |
2434
|
|
|
[ ]{0,'.$less_than_tab.'}:[ ]+ # colon starting definition |
2435
|
|
|
) |
2436
|
|
|
) |
2437
|
|
|
) |
2438
|
|
|
)'; // mx |
2439
|
|
|
|
2440
|
|
|
$text = preg_replace_callback('{ |
2441
|
|
|
(?>\A\n?|(?<=\n\n)) |
2442
|
|
|
'.$whole_list_re.' |
2443
|
|
|
}mx', |
2444
|
|
|
array(&$this, '_doDefLists_callback'), $text); |
2445
|
|
|
|
2446
|
|
|
return $text; |
2447
|
|
|
} |
2448
|
|
|
function _doDefLists_callback($matches) { |
|
|
|
|
2449
|
|
|
# Re-usable patterns to match list item bullets and number markers: |
2450
|
|
|
$list = $matches[1]; |
2451
|
|
|
|
2452
|
|
|
# Turn double returns into triple returns, so that we can make a |
2453
|
|
|
# paragraph for the last item in a list, if necessary: |
2454
|
|
|
$result = trim($this->processDefListItems($list)); |
2455
|
|
|
$result = "<dl>\n" . $result . "\n</dl>"; |
2456
|
|
|
return $this->hashBlock($result) . "\n\n"; |
2457
|
|
|
} |
2458
|
|
|
|
2459
|
|
|
|
2460
|
|
|
/** |
2461
|
|
|
* @return string |
2462
|
|
|
*/ |
2463
|
|
|
function processDefListItems($list_str) { |
|
|
|
|
2464
|
|
|
# |
2465
|
|
|
# Process the contents of a single definition list, splitting it |
2466
|
|
|
# into individual term and definition list items. |
2467
|
|
|
# |
2468
|
|
|
$less_than_tab = $this->tab_width - 1; |
2469
|
|
|
|
2470
|
|
|
# trim trailing blank lines: |
2471
|
|
|
$list_str = preg_replace("/\n{2,}\\z/", "\n", $list_str); |
2472
|
|
|
|
2473
|
|
|
# Process definition terms. |
2474
|
|
|
$list_str = preg_replace_callback('{ |
2475
|
|
|
(?>\A\n?|\n\n+) # leading line |
2476
|
|
|
( # definition terms = $1 |
2477
|
|
|
[ ]{0,'.$less_than_tab.'} # leading whitespace |
2478
|
|
|
(?![:][ ]|[ ]) # negative lookahead for a definition |
2479
|
|
|
# mark (colon) or more whitespace. |
2480
|
|
|
(?> \S.* \n)+? # actual term (not whitespace). |
2481
|
|
|
) |
2482
|
|
|
(?=\n?[ ]{0,3}:[ ]) # lookahead for following line feed |
2483
|
|
|
# with a definition mark. |
2484
|
|
|
}xm', |
2485
|
|
|
array(&$this, '_processDefListItems_callback_dt'), $list_str); |
2486
|
|
|
|
2487
|
|
|
# Process actual definitions. |
2488
|
|
|
$list_str = preg_replace_callback('{ |
2489
|
|
|
\n(\n+)? # leading line = $1 |
2490
|
|
|
( # marker space = $2 |
2491
|
|
|
[ ]{0,'.$less_than_tab.'} # whitespace before colon |
2492
|
|
|
[:][ ]+ # definition mark (colon) |
2493
|
|
|
) |
2494
|
|
|
((?s:.+?)) # definition text = $3 |
2495
|
|
|
(?= \n+ # stop at next definition mark, |
2496
|
|
|
(?: # next term or end of text |
2497
|
|
|
[ ]{0,'.$less_than_tab.'} [:][ ] | |
2498
|
|
|
<dt> | \z |
2499
|
|
|
) |
2500
|
|
|
) |
2501
|
|
|
}xm', |
2502
|
|
|
array(&$this, '_processDefListItems_callback_dd'), $list_str); |
2503
|
|
|
|
2504
|
|
|
return $list_str; |
2505
|
|
|
} |
2506
|
|
|
function _processDefListItems_callback_dt($matches) { |
|
|
|
|
2507
|
|
|
$terms = explode("\n", trim($matches[1])); |
2508
|
|
|
$text = ''; |
2509
|
|
|
foreach ($terms as $term) { |
2510
|
|
|
$term = $this->runSpanGamut(trim($term)); |
2511
|
|
|
$text .= "\n<dt>" . $term . "</dt>"; |
2512
|
|
|
} |
2513
|
|
|
return $text . "\n"; |
2514
|
|
|
} |
2515
|
|
|
function _processDefListItems_callback_dd($matches) { |
|
|
|
|
2516
|
|
|
$leading_line = $matches[1]; |
2517
|
|
|
$marker_space = $matches[2]; |
2518
|
|
|
$def = $matches[3]; |
2519
|
|
|
|
2520
|
|
View Code Duplication |
if ($leading_line || preg_match('/\n{2,}/', $def)) { |
|
|
|
|
2521
|
|
|
# Replace marker with the appropriate whitespace indentation |
2522
|
|
|
$def = str_repeat(' ', strlen($marker_space)) . $def; |
2523
|
|
|
$def = $this->runBlockGamut($this->outdent($def . "\n\n")); |
2524
|
|
|
$def = "\n". $def ."\n"; |
2525
|
|
|
} |
2526
|
|
|
else { |
2527
|
|
|
$def = rtrim($def); |
2528
|
|
|
$def = $this->runSpanGamut($this->outdent($def)); |
2529
|
|
|
} |
2530
|
|
|
|
2531
|
|
|
return "\n<dd>" . $def . "</dd>\n"; |
2532
|
|
|
} |
2533
|
|
|
|
2534
|
|
|
|
2535
|
|
|
function doFencedCodeBlocks($text) { |
|
|
|
|
2536
|
|
|
# |
2537
|
|
|
# Adding the fenced code block syntax to regular Markdown: |
2538
|
|
|
# |
2539
|
|
|
# ~~~ |
2540
|
|
|
# Code block |
2541
|
|
|
# ~~~ |
2542
|
|
|
# |
2543
|
|
|
$less_than_tab = $this->tab_width; |
|
|
|
|
2544
|
|
|
|
2545
|
|
|
$text = preg_replace_callback('{ |
2546
|
|
|
(?:\n|\A) |
2547
|
|
|
# 1: Opening marker |
2548
|
|
|
( |
2549
|
|
|
~{3,} # Marker: three tilde or more. |
2550
|
|
|
) |
2551
|
|
|
[ ]* \n # Whitespace and newline following marker. |
2552
|
|
|
|
2553
|
|
|
# 2: Content |
2554
|
|
|
( |
2555
|
|
|
(?> |
2556
|
|
|
(?!\1 [ ]* \n) # Not a closing marker. |
2557
|
|
|
.*\n+ |
2558
|
|
|
)+ |
2559
|
|
|
) |
2560
|
|
|
|
2561
|
|
|
# Closing marker. |
2562
|
|
|
\1 [ ]* \n |
2563
|
|
|
}xm', |
2564
|
|
|
array(&$this, '_doFencedCodeBlocks_callback'), $text); |
2565
|
|
|
|
2566
|
|
|
return $text; |
2567
|
|
|
} |
2568
|
|
|
function _doFencedCodeBlocks_callback($matches) { |
|
|
|
|
2569
|
|
|
$codeblock = $matches[2]; |
2570
|
|
|
$codeblock = htmlspecialchars($codeblock, ENT_NOQUOTES); |
2571
|
|
|
$codeblock = preg_replace_callback('/^\n+/', |
2572
|
|
|
array(&$this, '_doFencedCodeBlocks_newlines'), $codeblock); |
2573
|
|
|
$codeblock = "<pre><code>$codeblock</code></pre>"; |
2574
|
|
|
return "\n\n".$this->hashBlock($codeblock)."\n\n"; |
2575
|
|
|
} |
2576
|
|
|
function _doFencedCodeBlocks_newlines($matches) { |
|
|
|
|
2577
|
|
|
return str_repeat("<br$this->empty_element_suffix", |
2578
|
|
|
strlen($matches[0])); |
2579
|
|
|
} |
2580
|
|
|
|
2581
|
|
|
|
2582
|
|
|
# |
2583
|
|
|
# Redefining emphasis markers so that emphasis by underscore does not |
2584
|
|
|
# work in the middle of a word. |
2585
|
|
|
# |
2586
|
|
|
var $em_relist = array( |
2587
|
|
|
'' => '(?:(?<!\*)\*(?!\*)|(?<![a-zA-Z0-9_])_(?!_))(?=\S)(?![.,:;]\s)', |
2588
|
|
|
'*' => '(?<=\S)(?<!\*)\*(?!\*)', |
2589
|
|
|
'_' => '(?<=\S)(?<!_)_(?![a-zA-Z0-9_])', |
2590
|
|
|
); |
2591
|
|
|
var $strong_relist = array( |
2592
|
|
|
'' => '(?:(?<!\*)\*\*(?!\*)|(?<![a-zA-Z0-9_])__(?!_))(?=\S)(?![.,:;]\s)', |
2593
|
|
|
'**' => '(?<=\S)(?<!\*)\*\*(?!\*)', |
2594
|
|
|
'__' => '(?<=\S)(?<!_)__(?![a-zA-Z0-9_])', |
2595
|
|
|
); |
2596
|
|
|
var $em_strong_relist = array( |
2597
|
|
|
'' => '(?:(?<!\*)\*\*\*(?!\*)|(?<![a-zA-Z0-9_])___(?!_))(?=\S)(?![.,:;]\s)', |
2598
|
|
|
'***' => '(?<=\S)(?<!\*)\*\*\*(?!\*)', |
2599
|
|
|
'___' => '(?<=\S)(?<!_)___(?![a-zA-Z0-9_])', |
2600
|
|
|
); |
2601
|
|
|
|
2602
|
|
|
|
2603
|
|
|
function formParagraphs($text) { |
|
|
|
|
2604
|
|
|
# |
2605
|
|
|
# Params: |
2606
|
|
|
# $text - string to process with html <p> tags |
2607
|
|
|
# |
2608
|
|
|
# Strip leading and trailing lines: |
2609
|
|
|
$text = preg_replace('/\A\n+|\n+\z/', '', $text); |
2610
|
|
|
|
2611
|
|
|
$grafs = preg_split('/\n{2,}/', $text, -1, PREG_SPLIT_NO_EMPTY); |
2612
|
|
|
|
2613
|
|
|
# |
2614
|
|
|
# Wrap <p> tags and unhashify HTML blocks |
2615
|
|
|
# |
2616
|
|
|
foreach ($grafs as $key => $value) { |
2617
|
|
|
$value = trim($this->runSpanGamut($value)); |
2618
|
|
|
|
2619
|
|
|
# Check if this should be enclosed in a paragraph. |
2620
|
|
|
# Clean tag hashes & block tag hashes are left alone. |
2621
|
|
|
$is_p = !preg_match('/^B\x1A[0-9]+B|^C\x1A[0-9]+C$/', $value); |
2622
|
|
|
|
2623
|
|
|
if ($is_p) { |
2624
|
|
|
$value = "<p>$value</p>"; |
2625
|
|
|
} |
2626
|
|
|
$grafs[$key] = $value; |
2627
|
|
|
} |
2628
|
|
|
|
2629
|
|
|
# Join grafs in one text, then unhash HTML tags. |
2630
|
|
|
$text = implode("\n\n", $grafs); |
2631
|
|
|
|
2632
|
|
|
# Finish by removing any tag hashes still present in $text. |
2633
|
|
|
$text = $this->unhash($text); |
2634
|
|
|
|
2635
|
|
|
return $text; |
2636
|
|
|
} |
2637
|
|
|
|
2638
|
|
|
|
2639
|
|
|
### Footnotes |
2640
|
|
|
|
2641
|
|
View Code Duplication |
function stripFootnotes($text) { |
|
|
|
|
2642
|
|
|
# |
2643
|
|
|
# Strips link definitions from text, stores the URLs and titles in |
2644
|
|
|
# hash references. |
2645
|
|
|
# |
2646
|
|
|
$less_than_tab = $this->tab_width - 1; |
2647
|
|
|
|
2648
|
|
|
# Link defs are in the form: [^id]: url "optional title" |
2649
|
|
|
$text = preg_replace_callback('{ |
2650
|
|
|
^[ ]{0,'.$less_than_tab.'}\[\^(.+?)\][ ]?: # note_id = $1 |
2651
|
|
|
[ ]* |
2652
|
|
|
\n? # maybe *one* newline |
2653
|
|
|
( # text = $2 (no blank lines allowed) |
2654
|
|
|
(?: |
2655
|
|
|
.+ # actual text |
2656
|
|
|
| |
2657
|
|
|
\n # newlines but |
2658
|
|
|
(?!\[\^.+?\]:\s)# negative lookahead for footnote marker. |
2659
|
|
|
(?!\n+[ ]{0,3}\S)# ensure line is not blank and followed |
2660
|
|
|
# by non-indented content |
2661
|
|
|
)* |
2662
|
|
|
) |
2663
|
|
|
}xm', |
2664
|
|
|
array(&$this, '_stripFootnotes_callback'), |
2665
|
|
|
$text); |
2666
|
|
|
return $text; |
2667
|
|
|
} |
2668
|
|
|
function _stripFootnotes_callback($matches) { |
|
|
|
|
2669
|
|
|
$note_id = $this->fn_id_prefix . $matches[1]; |
2670
|
|
|
$this->footnotes[$note_id] = $this->outdent($matches[2]); |
2671
|
|
|
return ''; # String that will replace the block |
2672
|
|
|
} |
2673
|
|
|
|
2674
|
|
|
|
2675
|
|
|
function doFootnotes($text) { |
|
|
|
|
2676
|
|
|
# |
2677
|
|
|
# Replace footnote references in $text [^id] with a special text-token |
2678
|
|
|
# which will be replaced by the actual footnote marker in appendFootnotes. |
2679
|
|
|
# |
2680
|
|
|
if (!$this->in_anchor) { |
2681
|
|
|
$text = preg_replace('{\[\^(.+?)\]}', "F\x1Afn:\\1\x1A:", $text); |
2682
|
|
|
} |
2683
|
|
|
return $text; |
2684
|
|
|
} |
2685
|
|
|
|
2686
|
|
|
|
2687
|
|
|
function appendFootnotes($text) { |
|
|
|
|
2688
|
|
|
# |
2689
|
|
|
# Append footnote list to text. |
2690
|
|
|
# |
2691
|
|
|
$text = preg_replace_callback('{F\x1Afn:(.*?)\x1A:}', |
2692
|
|
|
array(&$this, '_appendFootnotes_callback'), $text); |
2693
|
|
|
|
2694
|
|
|
if (!empty($this->footnotes_ordered)) { |
2695
|
|
|
$text .= "\n\n"; |
2696
|
|
|
$text .= "<div class=\"footnotes\">\n"; |
2697
|
|
|
$text .= "<hr". MARKDOWN_EMPTY_ELEMENT_SUFFIX ."\n"; |
2698
|
|
|
$text .= "<ol>\n\n"; |
2699
|
|
|
|
2700
|
|
|
$attr = " rev=\"footnote\""; |
2701
|
|
|
if ($this->fn_backlink_class != "") { |
2702
|
|
|
$class = $this->fn_backlink_class; |
2703
|
|
|
$class = $this->encodeAttribute($class); |
2704
|
|
|
$attr .= " class=\"$class\""; |
2705
|
|
|
} |
2706
|
|
|
if ($this->fn_backlink_title != "") { |
2707
|
|
|
$title = $this->fn_backlink_title; |
2708
|
|
|
$title = $this->encodeAttribute($title); |
2709
|
|
|
$attr .= " title=\"$title\""; |
2710
|
|
|
} |
2711
|
|
|
$num = 0; |
2712
|
|
|
|
2713
|
|
|
while (!empty($this->footnotes_ordered)) { |
2714
|
|
|
$footnote = reset($this->footnotes_ordered); |
2715
|
|
|
$note_id = key($this->footnotes_ordered); |
2716
|
|
|
unset($this->footnotes_ordered[$note_id]); |
2717
|
|
|
|
2718
|
|
|
$footnote .= "\n"; # Need to append newline before parsing. |
2719
|
|
|
$footnote = $this->runBlockGamut("$footnote\n"); |
2720
|
|
|
$footnote = preg_replace_callback('{F\x1Afn:(.*?)\x1A:}', |
2721
|
|
|
array(&$this, '_appendFootnotes_callback'), $footnote); |
2722
|
|
|
|
2723
|
|
|
$attr = str_replace("%%", ++$num, $attr); |
2724
|
|
|
$note_id = $this->encodeAttribute($note_id); |
2725
|
|
|
|
2726
|
|
|
# Add backlink to last paragraph; create new paragraph if needed. |
2727
|
|
|
$backlink = "<a href=\"#fnref:$note_id\"$attr>↩</a>"; |
2728
|
|
|
if (preg_match('{</p>$}', $footnote)) { |
2729
|
|
|
$footnote = substr($footnote, 0, -4) . " $backlink</p>"; |
2730
|
|
|
} else { |
2731
|
|
|
$footnote .= "\n\n<p>$backlink</p>"; |
2732
|
|
|
} |
2733
|
|
|
|
2734
|
|
|
$text .= "<li id=\"fn:$note_id\">\n"; |
2735
|
|
|
$text .= $footnote . "\n"; |
2736
|
|
|
$text .= "</li>\n\n"; |
2737
|
|
|
} |
2738
|
|
|
|
2739
|
|
|
$text .= "</ol>\n"; |
2740
|
|
|
$text .= "</div>"; |
2741
|
|
|
} |
2742
|
|
|
return $text; |
2743
|
|
|
} |
2744
|
|
|
function _appendFootnotes_callback($matches) { |
|
|
|
|
2745
|
|
|
$node_id = $this->fn_id_prefix . $matches[1]; |
2746
|
|
|
|
2747
|
|
|
# Create footnote marker only if it has a corresponding footnote *and* |
2748
|
|
|
# the footnote hasn't been used by another marker. |
2749
|
|
|
if (isset($this->footnotes[$node_id])) { |
2750
|
|
|
# Transfert footnote content to the ordered list. |
2751
|
|
|
$this->footnotes_ordered[$node_id] = $this->footnotes[$node_id]; |
2752
|
|
|
unset($this->footnotes[$node_id]); |
2753
|
|
|
|
2754
|
|
|
$num = $this->footnote_counter++; |
2755
|
|
|
$attr = " rel=\"footnote\""; |
2756
|
|
|
if ($this->fn_link_class != "") { |
2757
|
|
|
$class = $this->fn_link_class; |
2758
|
|
|
$class = $this->encodeAttribute($class); |
2759
|
|
|
$attr .= " class=\"$class\""; |
2760
|
|
|
} |
2761
|
|
|
if ($this->fn_link_title != "") { |
2762
|
|
|
$title = $this->fn_link_title; |
2763
|
|
|
$title = $this->encodeAttribute($title); |
2764
|
|
|
$attr .= " title=\"$title\""; |
2765
|
|
|
} |
2766
|
|
|
|
2767
|
|
|
$attr = str_replace("%%", $num, $attr); |
2768
|
|
|
$node_id = $this->encodeAttribute($node_id); |
2769
|
|
|
|
2770
|
|
|
return |
2771
|
|
|
"<sup id=\"fnref:$node_id\">". |
2772
|
|
|
"<a href=\"#fn:$node_id\"$attr>$num</a>". |
2773
|
|
|
"</sup>"; |
2774
|
|
|
} |
2775
|
|
|
|
2776
|
|
|
return "[^".$matches[1]."]"; |
2777
|
|
|
} |
2778
|
|
|
|
2779
|
|
|
|
2780
|
|
|
### Abbreviations ### |
2781
|
|
|
|
2782
|
|
View Code Duplication |
function stripAbbreviations($text) { |
|
|
|
|
2783
|
|
|
# |
2784
|
|
|
# Strips abbreviations from text, stores titles in hash references. |
2785
|
|
|
# |
2786
|
|
|
$less_than_tab = $this->tab_width - 1; |
2787
|
|
|
|
2788
|
|
|
# Link defs are in the form: [id]*: url "optional title" |
2789
|
|
|
$text = preg_replace_callback('{ |
2790
|
|
|
^[ ]{0,'.$less_than_tab.'}\*\[(.+?)\][ ]?: # abbr_id = $1 |
2791
|
|
|
(.*) # text = $2 (no blank lines allowed) |
2792
|
|
|
}xm', |
2793
|
|
|
array(&$this, '_stripAbbreviations_callback'), |
2794
|
|
|
$text); |
2795
|
|
|
return $text; |
2796
|
|
|
} |
2797
|
|
|
function _stripAbbreviations_callback($matches) { |
|
|
|
|
2798
|
|
|
$abbr_word = $matches[1]; |
2799
|
|
|
$abbr_desc = $matches[2]; |
2800
|
|
|
if ($this->abbr_word_re) |
2801
|
|
|
$this->abbr_word_re .= '|'; |
2802
|
|
|
$this->abbr_word_re .= preg_quote($abbr_word); |
2803
|
|
|
$this->abbr_desciptions[$abbr_word] = trim($abbr_desc); |
2804
|
|
|
return ''; # String that will replace the block |
2805
|
|
|
} |
2806
|
|
|
|
2807
|
|
|
|
2808
|
|
|
function doAbbreviations($text) { |
|
|
|
|
2809
|
|
|
# |
2810
|
|
|
# Find defined abbreviations in text and wrap them in <abbr> elements. |
2811
|
|
|
# |
2812
|
|
|
if ($this->abbr_word_re) { |
2813
|
|
|
// cannot use the /x modifier because abbr_word_re may |
2814
|
|
|
// contain significant spaces: |
2815
|
|
|
$text = preg_replace_callback('{'. |
2816
|
|
|
'(?<![\w\x1A])'. |
2817
|
|
|
'(?:'.$this->abbr_word_re.')'. |
2818
|
|
|
'(?![\w\x1A])'. |
2819
|
|
|
'}', |
2820
|
|
|
array(&$this, '_doAbbreviations_callback'), $text); |
2821
|
|
|
} |
2822
|
|
|
return $text; |
2823
|
|
|
} |
2824
|
|
|
function _doAbbreviations_callback($matches) { |
|
|
|
|
2825
|
|
|
$abbr = $matches[0]; |
2826
|
|
|
if (isset($this->abbr_desciptions[$abbr])) { |
2827
|
|
|
$desc = $this->abbr_desciptions[$abbr]; |
2828
|
|
|
if (empty($desc)) { |
2829
|
|
|
return $this->hashPart("<abbr>$abbr</abbr>"); |
2830
|
|
|
} else { |
2831
|
|
|
$desc = $this->encodeAttribute($desc); |
2832
|
|
|
return $this->hashPart("<abbr title=\"$desc\">$abbr</abbr>"); |
2833
|
|
|
} |
2834
|
|
|
} else { |
2835
|
|
|
return $matches[0]; |
2836
|
|
|
} |
2837
|
|
|
} |
2838
|
|
|
|
2839
|
|
|
} |
2840
|
|
|
|
2841
|
|
|
|
2842
|
|
|
/* |
2843
|
|
|
|
2844
|
|
|
PHP Markdown Extra |
2845
|
|
|
================== |
2846
|
|
|
|
2847
|
|
|
Description |
2848
|
|
|
----------- |
2849
|
|
|
|
2850
|
|
|
This is a PHP port of the original Markdown formatter written in Perl |
2851
|
|
|
by John Gruber. This special "Extra" version of PHP Markdown features |
2852
|
|
|
further enhancements to the syntax for making additional constructs |
2853
|
|
|
such as tables and definition list. |
2854
|
|
|
|
2855
|
|
|
Markdown is a text-to-HTML filter; it translates an easy-to-read / |
2856
|
|
|
easy-to-write structured text format into HTML. Markdown's text format |
2857
|
|
|
is most similar to that of plain text email, and supports features such |
2858
|
|
|
as headers, *emphasis*, code blocks, blockquotes, and links. |
2859
|
|
|
|
2860
|
|
|
Markdown's syntax is designed not as a generic markup language, but |
2861
|
|
|
specifically to serve as a front-end to (X)HTML. You can use span-level |
2862
|
|
|
HTML tags anywhere in a Markdown document, and you can use block level |
2863
|
|
|
HTML tags (like <div> and <table> as well). |
2864
|
|
|
|
2865
|
|
|
For more information about Markdown's syntax, see: |
2866
|
|
|
|
2867
|
|
|
<http://daringfireball.net/projects/markdown/> |
2868
|
|
|
|
2869
|
|
|
|
2870
|
|
|
Bugs |
2871
|
|
|
---- |
2872
|
|
|
|
2873
|
|
|
To file bug reports please send email to: |
2874
|
|
|
|
2875
|
|
|
<[email protected]> |
2876
|
|
|
|
2877
|
|
|
Please include with your report: (1) the example input; (2) the output you |
2878
|
|
|
expected; (3) the output Markdown actually produced. |
2879
|
|
|
|
2880
|
|
|
|
2881
|
|
|
Version History |
2882
|
|
|
--------------- |
2883
|
|
|
|
2884
|
|
|
See the readme file for detailed release notes for this version. |
2885
|
|
|
|
2886
|
|
|
|
2887
|
|
|
Copyright and License |
2888
|
|
|
--------------------- |
2889
|
|
|
|
2890
|
|
|
PHP Markdown & Extra |
2891
|
|
|
Copyright (c) 2004-2008 Michel Fortin |
2892
|
|
|
<http://www.michelf.com/> |
2893
|
|
|
All rights reserved. |
2894
|
|
|
|
2895
|
|
|
Based on Markdown |
2896
|
|
|
Copyright (c) 2003-2006 John Gruber |
2897
|
|
|
<http://daringfireball.net/> |
2898
|
|
|
All rights reserved. |
2899
|
|
|
|
2900
|
|
|
Redistribution and use in source and binary forms, with or without |
2901
|
|
|
modification, are permitted provided that the following conditions are |
2902
|
|
|
met: |
2903
|
|
|
|
2904
|
|
|
* Redistributions of source code must retain the above copyright notice, |
2905
|
|
|
this list of conditions and the following disclaimer. |
2906
|
|
|
|
2907
|
|
|
* Redistributions in binary form must reproduce the above copyright |
2908
|
|
|
notice, this list of conditions and the following disclaimer in the |
2909
|
|
|
documentation and/or other materials provided with the distribution. |
2910
|
|
|
|
2911
|
|
|
* Neither the name "Markdown" nor the names of its contributors may |
2912
|
|
|
be used to endorse or promote products derived from this software |
2913
|
|
|
without specific prior written permission. |
2914
|
|
|
|
2915
|
|
|
This software is provided by the copyright holders and contributors "as |
2916
|
|
|
is" and any express or implied warranties, including, but not limited |
2917
|
|
|
to, the implied warranties of merchantability and fitness for a |
2918
|
|
|
particular purpose are disclaimed. In no event shall the copyright owner |
2919
|
|
|
or contributors be liable for any direct, indirect, incidental, special, |
2920
|
|
|
exemplary, or consequential damages (including, but not limited to, |
2921
|
|
|
procurement of substitute goods or services; loss of use, data, or |
2922
|
|
|
profits; or business interruption) however caused and on any theory of |
2923
|
|
|
liability, whether in contract, strict liability, or tort (including |
2924
|
|
|
negligence or otherwise) arising in any way out of the use of this |
2925
|
|
|
software, even if advised of the possibility of such damage. |
2926
|
|
|
|
2927
|
|
|
*/ |
2928
|
|
|
?> |
|
|
|
|
If you suppress an error, we recommend checking for the error condition explicitly: