GlossaryReplacer::internalSaveAnchorLink() - Code Metrics - magabriel/trefoil - Measure and Improve Code Quality continuously with Scrutinizer

GlossaryReplacer::internalSaveAnchorLink() A
last analyzed 2018-11-26 10:45 UTC

↳ Parent: GlossaryReplacer

Complexity

Conditions	1
Paths	1

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	5
CRAP Score	1

Importance

Changes

Metric	Value
dl	0
loc	9
ccs	5
cts	5
cp	1
rs	9.9666
c	0
b	0
f	0
cc	1
nc	1
nop	1
crap	1

<?php
/*
 * This file is part of the trefoil application.
 *
 * (c) Miguel Angel Gabriel <[email protected]>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
namespace Trefoil\Helpers;

/**
 * Replaces terms of a glossary into a given text (HTML).
 *
 * 'options' parameter can have the following values:
 *
 *     'coverage': ['all', 'item', 'first'], where:
 *          'all' : replace all ocurrences of term with a link to the definition.
 *          'item': (default) only first ocurrence into current text.
 *          'first': first ocurrence in this or other text pieces (for this to work the Glossary object
 *                  instance received must be the that was passed to each of the GlossaryReplacer objects
 *                  that process all the text pieces).
 *     'elements' ['chapter'] # items where global terms should be replaced.
 *
 * Other options are ignored.
 */
class GlossaryReplacer
{
    /**
     * The Glossary object
     *
     * @var Glossary
     */
    protected $glossary;

    /**
     * The HTML text to replace into
     *
     * @var string
     */
    protected $text;

    /**
     * The options for glossary processing
     *
     * @var array
     */
    protected $glossaryOptions = array();

    /**
     * Identifier for the text to be used in setting cross-references
     *
     * @var string
     */
    protected $textId;

    /**
     * The TextPreserver instance
     *
     * @var TextPreserver
     */
    protected $textPreserver;

    /**
     * A Twig instance to render the template
     *
     * @var \Twig_Environment
     */
    private $twig;

    /**
     * @return string
     *
     * @internal Should be protected but made public for PHP 5.3 compat
     */
    public function getTextId()
    {
        return $this->textId;
    }

    /**
     * @return array
     *
     * @internal Should be protected but made public for PHP 5.3 compat
     */
    public function getGlossaryOptions()
    {
        return $this->glossaryOptions;
    }

    /**
     * @param Glossary          $glossary        The glossary object
     * @param TextPreserver     $textPreserver   A TextPreserver instance
     * @param string            $text            The text to replace into
     * @param string            $textId          The id of the text, for cross-reference
     * @param array             $glossaryOptions The options to apply
     * @param \Twig_Environment $twig            Twig loader to load the template from
     */
    public function __construct(Glossary $glossary,
                                TextPreserver $textPreserver,
                                $text,
                                $textId,
                                $glossaryOptions = array(),
                                \Twig_Environment $twig)
    {
        $this->glossary = $glossary;
        $this->textPreserver = $textPreserver;
        $this->text = $text;
        $this->textId = $textId;
        $this->glossaryOptions = $glossaryOptions;
        $this->twig = $twig;
    }

    /**
     * Do al the replacements of glossary terms into text, returning the result.
     * Also, the glossary object will be modified for each term with the anchorlinks created into the text
     * and the Xrefs for further reference.
     *
     * @return string
     */
    public function replace()
    {
        if (!$this->glossary->count()) {
            // no glossary terms
            return $this->text;
        }

        // set the TextPeserver instance for this text processing
        $this->textPreserver->setText($this->text);

        // save existing values of tags contents we don't want to get modified into
        $this->textPreserver->preserveHtmlTags(array('a', 'pre'));

        // save existing values of attributes we don't want to get modified into
        $this->textPreserver->preserveHtmlTagAttributes(array('title', 'alt', 'src', 'href'));

        // get the modified text
        $text = $this->textPreserver->getText();

        // process each variant of each term
        foreach ($this->glossary as $glossaryItem/* @var $glossaryItem GlossaryItem */) {

            foreach ($glossaryItem->getVariants() as $variant) {
                $newText = $this->replaceTermVariant($text, $glossaryItem, $variant);

                if ($newText != $text) {
                    // at least a replacement ocurred
                    if ('item' == $this->glossaryOptions['coverage']) {
                        // already replaced once in this item, so ignore subsequent ocurrences and variants
                        $text = $newText;
                        break;
                    }
                }

                $text = $newText;
            }
        }

        // refresh the modified text into the TextPreserver and restore all saved strings
        $this->textPreserver->setText($text);
        $text = $this->textPreserver->restore();

        return $text;
    }

    /**
     * Replace a term variant into the content of certain tags
     *
     * @param string       $text
     * @param GlossaryItem $glossaryItem
     * @param string       $variant      The variant to replace
     *
     * @return string
     */
    protected function replaceTermVariant($text, GlossaryItem $glossaryItem, $variant)
    {
        // construct regexp to replace only into certain tags
        $tags = array('p', 'li', 'dd');

        $patterns = array();
        foreach ($tags as $tag) {
            $patterns[] = sprintf('/<(?<tag>%s)>(?<content>.*)<\/%s>/Ums', $tag, $tag);
        }

        // replace all occurrences of $variant into text $item with a glossary link
        // PHP 5.3 compat
        $me = $this;

        $text = preg_replace_callback(
            $patterns,
            function ($matches) use ($me, $glossaryItem, $variant) {
                // extract what to replace
                $tag = $matches['tag'];
                $tagContent = $matches['content'];

                // do the replacement
                $newContent = $me->internalReplaceTermVariantIntoString($tagContent, $glossaryItem, $variant);

                // reconstruct the original tag with the modified text
                return sprintf('<%s>%s</%s>', $tag, $newContent, $tag);
            },
            $text
        );

        return $text;
    }

    /**
     * Replace a term variant into a given string
     * 
     * The rendering expects a Twig template called "auto-glossary-term.twig" to be loadable.
     * Sample template:
     * 
     *      {% spaceless %}
     *      <span class="auto-glossary-term">
     *          <a href="#auto-glossary-{{ reference }}" id="auto-glossary-term-{{ reference }}">{{ term }}</a>
     *      </span>
     *      {% endspaceless %}
     * 
     * @param string       $text
     * @param GlossaryItem $glossaryItem
     * @param string       $variant      The variant to replace
     *
     * @return string
     *
     * @internal Should be protected but made public for PHP 5.3 compat
     */
    public function internalReplaceTermVariantIntoString($text, GlossaryItem $glossaryItem, $variant)
    {
        // construct the regexp to replace inside the tag content
        $regExp = '/';
        $regExp .= '(^|\W)'; // $1 = previous delimiter or start of string
        $regExp .= '(' . $variant . ')'; // $2 = the term to replace
        $regExp .= '(\W|$)'; // $3 = following delimiter or end of string
        $regExp .= '/ui'; // unicode, case-insensitive

        // replace all ocurrences of $variant into $tagContent with a glossary link

        // PHP 5.3 compat
        $me = $this;
        $textPreserver = $this->textPreserver;
        $twig = $this->twig;

        $text = preg_replace_callback(
            $regExp,
            function ($matches) use ($me, $glossaryItem, $variant, $textPreserver, $twig) {
                // look if already replaced once in this item, so just leave it unchanged
                $options = $me->getGlossaryOptions();
                if ('item' == $options['coverage']) {
                    foreach ($glossaryItem->getXref() as $variant => $xRefs) {
                        if (isset($xRefs[$me->getTextId()])) {
                            return $matches[0];
                        }
                    }
                }

                /* if coverage type is "first" and term is already defined,
                 * don't replace the term again
                */
                if ('first' == $options['coverage'] && $glossaryItem->getXref()) {
                    // already replaced elsewhere, just leave it unchanged
                    return $matches[0];
                }

                /* create the anchor link from the slug
                 * and get the number given to the anchor link just created
                 */
                $anchorLink = $me->internalSaveAnchorLink($glossaryItem);

                // save the placeholder for this slug to be replaced later
                $placeHolder = $textPreserver->internalCreatePlacehoder($anchorLink);

                // save the placeholder for this term (to avoid further unwanted matches into)
                $placeHolder2 = $textPreserver->internalCreatePlacehoder($matches[2]);

                // create replacement for link
                $repl = $twig->render('auto-glossary-term.twig',
                                      array(
                                          'reference' => $placeHolder,
                                          'term'      => $placeHolder2, 
                                          'item'      => $glossaryItem
                                      ));

                // save xref
                $glossaryItem->addXref($variant, $me->getTextId());

                // return reconstructed match
                return $matches[1] . $repl . $matches[3];
            },
            $text
        );

        return $text;
    }

    /**
     * Save an anchor link to be registered later
     *
     * @param GlossaryItem $glossaryItem
     *
     * @return int The anchor link saved
     *
     * @internal Should be protected but made public for PHP 5.3 compat
     */
    public function internalSaveAnchorLink(GlossaryItem $glossaryItem)
    {
        $count = count($glossaryItem->getAnchorLinks());

        $savedAnchorLink = $glossaryItem->getSlug() . '-' . $count;
        $glossaryItem->addAnchorLink($savedAnchorLink);

        return $savedAnchorLink;
    }
}


1		<?php
2		/*
3		* This file is part of the trefoil application.
4		*
5		* (c) Miguel Angel Gabriel <[email protected]>
6		*
7		* For the full copyright and license information, please view the LICENSE
8		* file that was distributed with this source code.
9		*/
10		namespace Trefoil\Helpers;
11
12		/**
13		* Replaces terms of a glossary into a given text (HTML).
14		*
15		* 'options' parameter can have the following values:
16		*
17		* 'coverage': ['all', 'item', 'first'], where:
18		* 'all' : replace all ocurrences of term with a link to the definition.
19		* 'item': (default) only first ocurrence into current text.
20		* 'first': first ocurrence in this or other text pieces (for this to work the Glossary object
21		* instance received must be the that was passed to each of the GlossaryReplacer objects
22		* that process all the text pieces).
23		* 'elements' ['chapter'] # items where global terms should be replaced.
24		*
25		* Other options are ignored.
26		*/
27		class GlossaryReplacer
28		{
29		/**
30		* The Glossary object
31		*
32		* @var Glossary
33		*/
34		protected $glossary;
35
36		/**
37		* The HTML text to replace into
38		*
39		* @var string
40		*/
41		protected $text;
42
43		/**
44		* The options for glossary processing
45		*
46		* @var array
47		*/
48		protected $glossaryOptions = array();
49
50		/**
51		* Identifier for the text to be used in setting cross-references
52		*
53		* @var string
54		*/
55		protected $textId;
56
57		/**
58		* The TextPreserver instance
59		*
60		* @var TextPreserver
61		*/
62		protected $textPreserver;
63
64		/**
65		* A Twig instance to render the template
66		*
67		* @var \Twig_Environment
68		*/
69		private $twig;
70
71		/**
72		* @return string
73		*
74		* @internal Should be protected but made public for PHP 5.3 compat
75		*/
76	1	public function getTextId()
77		{
78	1	return $this->textId;
79		}
80
81		/**
82		* @return array
83		*
84		* @internal Should be protected but made public for PHP 5.3 compat
85		*/
86	1	public function getGlossaryOptions()
87		{
88	1	return $this->glossaryOptions;
89		}
90
91		/**
92		* @param Glossary $glossary The glossary object
93		* @param TextPreserver $textPreserver A TextPreserver instance
94		* @param string $text The text to replace into
95		* @param string $textId The id of the text, for cross-reference
96		* @param array $glossaryOptions The options to apply
97		* @param \Twig_Environment $twig Twig loader to load the template from
98		*/
99	1	public function __construct(Glossary $glossary,
100		TextPreserver $textPreserver,
101		$text,
102		$textId,
103		$glossaryOptions = array(),
104		\Twig_Environment $twig)
105		{
106	1	$this->glossary = $glossary;
107	1	$this->textPreserver = $textPreserver;
108	1	$this->text = $text;
109	1	$this->textId = $textId;
110	1	$this->glossaryOptions = $glossaryOptions;
111	1	$this->twig = $twig;
112	1	}
113
114		/**
115		* Do al the replacements of glossary terms into text, returning the result.
116		* Also, the glossary object will be modified for each term with the anchorlinks created into the text
117		* and the Xrefs for further reference.
118		*
119		* @return string
120		*/
121	1	public function replace()
122		{
123	1	if (!$this->glossary->count()) {
124		// no glossary terms
125		return $this->text;
126		}
127
128		// set the TextPeserver instance for this text processing
129	1	$this->textPreserver->setText($this->text);
130
131		// save existing values of tags contents we don't want to get modified into
132	1	$this->textPreserver->preserveHtmlTags(array('a', 'pre'));
133
134		// save existing values of attributes we don't want to get modified into
135	1	$this->textPreserver->preserveHtmlTagAttributes(array('title', 'alt', 'src', 'href'));
136
137		// get the modified text
138	1	$text = $this->textPreserver->getText();
139
140		// process each variant of each term
141	1	foreach ($this->glossary as $glossaryItem/* @var $glossaryItem GlossaryItem */) {
142
143	1	foreach ($glossaryItem->getVariants() as $variant) {
144	1	$newText = $this->replaceTermVariant($text, $glossaryItem, $variant);
145
146	1	if ($newText != $text) {
147		// at least a replacement ocurred
148	1	if ('item' == $this->glossaryOptions['coverage']) {
149		// already replaced once in this item, so ignore subsequent ocurrences and variants
150	1	$text = $newText;
151	1	break;
152		}
153		}
154
155	1	$text = $newText;
156	1	}
157	1	}
158
159		// refresh the modified text into the TextPreserver and restore all saved strings
160	1	$this->textPreserver->setText($text);
161	1	$text = $this->textPreserver->restore();
162
163	1	return $text;
164		}
165
166		/**
167		* Replace a term variant into the content of certain tags
168		*
169		* @param string $text
170		* @param GlossaryItem $glossaryItem
171		* @param string $variant The variant to replace
172		*
173		* @return string
174		*/
175	1	protected function replaceTermVariant($text, GlossaryItem $glossaryItem, $variant)
176		{
177		// construct regexp to replace only into certain tags
178	1	$tags = array('p', 'li', 'dd');
179
180	1	$patterns = array();
181	1	foreach ($tags as $tag) {
182	1	$patterns[] = sprintf('/<(?<tag>%s)>(?<content>.*)<\/%s>/Ums', $tag, $tag);
183	1	}
184
185		// replace all occurrences of $variant into text $item with a glossary link
186		// PHP 5.3 compat
187	1	$me = $this;
188
189	1	$text = preg_replace_callback(
190	1	$patterns,
191		function ($matches) use ($me, $glossaryItem, $variant) {
192		// extract what to replace
193	1	$tag = $matches['tag'];
194	1	$tagContent = $matches['content'];
195
196		// do the replacement
197	1	$newContent = $me->internalReplaceTermVariantIntoString($tagContent, $glossaryItem, $variant);
198
199		// reconstruct the original tag with the modified text
200	1	return sprintf('<%s>%s</%s>', $tag, $newContent, $tag);
201	1	},
202		$text
203	1	);
204
205	1	return $text;
206		}
207
208		/**
209		* Replace a term variant into a given string
210		*
211		* The rendering expects a Twig template called "auto-glossary-term.twig" to be loadable.
212		* Sample template:
213		*
214		* {% spaceless %}
215		* <span class="auto-glossary-term">
216		* <a href="#auto-glossary-{{ reference }}" id="auto-glossary-term-{{ reference }}">{{ term }}</a>
217		* </span>
218		* {% endspaceless %}
219		*
220		* @param string $text
221		* @param GlossaryItem $glossaryItem
222		* @param string $variant The variant to replace
223		*
224		* @return string
225		*
226		* @internal Should be protected but made public for PHP 5.3 compat
227		*/
228	1	public function internalReplaceTermVariantIntoString($text, GlossaryItem $glossaryItem, $variant)
229		{
230		// construct the regexp to replace inside the tag content
231	1	$regExp = '/';
232	1	$regExp .= '(^\|\W)'; // $1 = previous delimiter or start of string
233	1	$regExp .= '(' . $variant . ')'; // $2 = the term to replace
234	1	$regExp .= '(\W\|$)'; // $3 = following delimiter or end of string
235	1	$regExp .= '/ui'; // unicode, case-insensitive
236
237		// replace all ocurrences of $variant into $tagContent with a glossary link
238
239		// PHP 5.3 compat
240	1	$me = $this;
241	1	$textPreserver = $this->textPreserver;
242	1	$twig = $this->twig;
243
244	1	$text = preg_replace_callback(
245	1	$regExp,
246	1	function ($matches) use ($me, $glossaryItem, $variant, $textPreserver, $twig) {
247		// look if already replaced once in this item, so just leave it unchanged
248	1	$options = $me->getGlossaryOptions();
249	1	if ('item' == $options['coverage']) {
250	1	foreach ($glossaryItem->getXref() as $variant => $xRefs) {
251	1	if (isset($xRefs[$me->getTextId()])) {
252	1	return $matches[0];
253		}
254	1	}
255	1	}
256
257		/* if coverage type is "first" and term is already defined,
258		* don't replace the term again
259		*/
260	1	if ('first' == $options['coverage'] && $glossaryItem->getXref()) {
261		// already replaced elsewhere, just leave it unchanged
262		return $matches[0];
263		}
264
265		/* create the anchor link from the slug
266		* and get the number given to the anchor link just created
267		*/
268	1	$anchorLink = $me->internalSaveAnchorLink($glossaryItem);
269
270		// save the placeholder for this slug to be replaced later
271	1	$placeHolder = $textPreserver->internalCreatePlacehoder($anchorLink);
272
273		// save the placeholder for this term (to avoid further unwanted matches into)
274	1	$placeHolder2 = $textPreserver->internalCreatePlacehoder($matches[2]);
275
276		// create replacement for link
277	1	$repl = $twig->render('auto-glossary-term.twig',
278		array(
279	1	'reference' => $placeHolder,
280	1	'term' => $placeHolder2,
281		'item' => $glossaryItem
282	1	));
283
284		// save xref
285	1	$glossaryItem->addXref($variant, $me->getTextId());
286
287		// return reconstructed match
288	1	return $matches[1] . $repl . $matches[3];
289	1	},
290		$text
291	1	);
292
293	1	return $text;
294		}
295
296		/**
297		* Save an anchor link to be registered later
298		*
299		* @param GlossaryItem $glossaryItem
300		*
301		* @return int The anchor link saved
302		*
303		* @internal Should be protected but made public for PHP 5.3 compat
304		*/
305	1	public function internalSaveAnchorLink(GlossaryItem $glossaryItem)
306		{
307	1	$count = count($glossaryItem->getAnchorLinks());
308
309	1	$savedAnchorLink = $glossaryItem->getSlug() . '-' . $count;
310	1	$glossaryItem->addAnchorLink($savedAnchorLink);
311
312	1	return $savedAnchorLink;
313		}
314		}
315

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GlossaryReplacer::internalSaveAnchorLink() A last analyzed 2018-11-26 10:45 UTC

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GlossaryReplacer::internalSaveAnchorLink() A
last analyzed 2018-11-26 10:45 UTC