1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
|
<?php
/**
*
* This file is part of the phpBB Forum Software package.
*
* @copyright (c) phpBB Limited <https://www.phpbb.com>
* @license GNU General Public License, version 2 (GPL-2.0)
*
* For full copyright and license information, please see
* the docs/CREDITS.txt file.
*
*/
namespace phpbb\textformatter\s9e;
use phpbb\textformatter\s9e\factory;
use s9e\TextFormatter\Configurator\Helpers\TemplateHelper;
use s9e\TextFormatter\Configurator\Items\UnsafeTemplate;
class bbcode_merger
{
/**
* @var \s9e\TextFormatter\Configurator $configurator Configurator instance used to inspect BBCodes
*/
protected $configurator;
/**
* @param \phpbb\textformatter\s9e\factory $factory
*/
public function __construct(factory $factory)
{
$this->configurator = $factory->get_configurator();
}
/**
* Merge two BBCode definitions
*
* All of the arrays contain a "usage" element and a "template" element
*
* @throws InvalidArgumentException if a definition cannot be interpreted
* @throws RuntimeException if something unexpected occurs
*
* @param array $without BBCode definition without an attribute
* @param array $with BBCode definition with an attribute
* @return array Merged definition
*/
public function merge_bbcodes(array $without, array $with)
{
$without = $this->create_bbcode($without);
$with = $this->create_bbcode($with);
// Select the appropriate strategy for merging this BBCode
if ($this->is_content_bbcode($without, $with))
{
$merged = $this->merge_content_bbcode($without, $with);
}
else
{
$merged = $this->merge_optional_bbcode($without, $with);
}
$merged['template'] = $this->normalize_template($merged['template']);
return $merged;
}
/**
* Create a custom BBCode for inspection
*
* @param array $definition Original BBCode definition
* @return array Updated definition containing a BBCode object and a Tag
*/
protected function create_bbcode(array $definition)
{
$bbcode = $this->configurator->BBCodes->addCustom(
$definition['usage'],
new UnsafeTemplate($definition['template'])
);
$definition['bbcode'] = $bbcode;
$definition['tag'] = $this->configurator->tags[$bbcode->tagName];
return $definition;
}
/**
* Indent given template for readability
*
* @param string $template
* @return string
*/
protected function indent_template($template)
{
$dom = TemplateHelper::loadTemplate($template);
$dom->formatOutput = true;
$template = TemplateHelper::saveTemplate($dom);
// Remove the first level of indentation if the template starts with whitespace
if (preg_match('(^\\n +)', $template, $m))
{
$template = str_replace($m[0], "\n", $template);
}
return trim($template);
}
/**
* Test whether the two definitions form a "content"-style BBCode
*
* Such BBCodes include the [URL] BBCode, which uses its text content as
* attribute if none is provided
*
* @param array $without BBCode definition without an attribute
* @param array $with BBCode definition with an attribute
* @return array Merged definition
*/
protected function is_content_bbcode(array $without, array $with)
{
// Test whether we find the same non-TEXT token between "]" and "[" in the usage
// as between ">" and "<" in the template
return (preg_match('(\\]\\s*(\\{(?!TEXT)[^}]+\\})\\s*\\[)', $without['usage'], $m)
&& preg_match('(>[^<]*?' . preg_quote($m[1]) . '[^>]*?<)s', $without['template']));
}
/**
* Merge the two BBCode definitions of a "content"-style BBCode
*
* @param array $without BBCode definition without an attribute
* @param array $with BBCode definition with an attribute
* @return array Merged definition
*/
protected function merge_content_bbcode(array $without, array $with)
{
// Convert [X={X}] into [X={X;useContent}]
$usage = preg_replace('(\\})', ';useContent}', $with['usage'], 1);
// Use the template from the definition that uses an attribute
$template = $with['tag']->template;
return ['usage' => $usage, 'template' => $template];
}
/**
* Merge the two BBCode definitions of a BBCode with an optional argument
*
* Such BBCodes include the [QUOTE] BBCode, which takes an optional argument
* but otherwise does not behave differently
*
* @param array $without BBCode definition without an attribute
* @param array $with BBCode definition with an attribute
* @return array Merged definition
*/
protected function merge_optional_bbcode(array $without, array $with)
{
// Convert [X={X}] into [X={X?}]
$usage = preg_replace('(\\})', '?}', $with['usage'], 1);
// Build a template for both versions
$template = '<xsl:choose><xsl:when test="@' . $with['bbcode']->defaultAttribute . '">' . $with['tag']->template . '</xsl:when><xsl:otherwise>' . $without['tag']->template . '</xsl:otherwise></xsl:choose>';
return ['usage' => $usage, 'template' => $template];
}
/**
* Normalize a template
*
* @param string $template
* @return string
*/
protected function normalize_template($template)
{
// Normalize the template to simplify it
$template = $this->configurator->templateNormalizer->normalizeTemplate($template);
// Convert xsl:value-of elements back to {L_} tokens where applicable
$template = preg_replace('(<xsl:value-of select="\\$(L_\\w+)"/>)', '{$1}', $template);
// Beautify the template
$template = $this->indent_template($template);
return $template;
}
}
|
