ParsedText::overwrite() - Code Metrics - Inspection of "WiP" - s9e/TextFormatter - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Branch — wip/litedown (039d9d)

by Josh

created 2017-10-16 16:53 UTC

ParsedText::overwrite() A

↳ Parent: ParsedText

Complexity

Conditions	2
Paths	2

Size

Total Lines	7
Code Lines	3

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	6
CRAP Score	2

Importance

Changes

Metric	Value
dl	0
loc	7
ccs	6
cts	6
cp	1
rs	9.4285
c	0
b	0
f	0
cc	2
eloc	3
nc	2
nop	2
crap	2

<?php

/**
* @package   s9e\TextFormatter
* @copyright Copyright (c) 2010-2017 The s9e Authors
* @license   http://www.opensource.org/licenses/mit-license.php The MIT License
*/
namespace s9e\TextFormatter\Plugins\Litedown\Parser;

use ArrayAccess;

class ParsedText implements ArrayAccess
{
	/**
	* @var bool Whether to decode HTML entities when decoding text
	*/
	public $decodeHtmlEntities = false;

	/**
	* @var bool Whether text contains escape characters
	*/
	protected $hasEscapedChars = false;

	/**
	* @var array Array of [label => link info]
	*/
	public $linkReferences = [];

	/**
	* @var string Text being parsed
	*/
	protected $text;

	/**
	* @param string $text Original text
	*/
	public function __construct($text)
	{
		if (strpos($text, '\\') !== false && preg_match('/\\\\[!"\'()*[\\\\\\]^_`~]/', $text))
		{
			$this->hasEscapedChars = true;

			// Encode escaped literals that have a special meaning otherwise, so that we don't have
			// to take them into account in regexps
			$text = strtr(
				$text,
				[
					'\\!' => "\x1B0", '\\"' => "\x1B1", "\\'" => "\x1B2", '\\('  => "\x1B3",
					'\\)' => "\x1B4", '\\*' => "\x1B5", '\\[' => "\x1B6", '\\\\' => "\x1B7",
					'\\]' => "\x1B8", '\\^' => "\x1B9", '\\_' => "\x1BA", '\\`'  => "\x1BB",
					'\\~' => "\x1BC"
				]
			);
		}

		// We append a couple of lines and a non-whitespace character at the end of the text in
		// order to trigger the closure of all open blocks such as quotes and lists
		$this->text = $text . "\n\n\x17";
	}

	/**
	* @return string
	*/
	public function __toString()
	{
		return $this->text;
	}

	/**
	* Decode a chunk of encoded text to be used as an attribute value
	*
	* Decodes escaped literals and removes slashes and 0x1A characters
	*
	* @param  string $str Encoded text
	* @return string      Decoded text
	*/
	public function decode($str)
	{
		if ($this->decodeHtmlEntities && strpos($str, '&') !== false)
		{
			$str = html_entity_decode($str, ENT_QUOTES, 'UTF-8');
		}
		$str = str_replace("\x1A", '', $str);

		if ($this->hasEscapedChars)
		{
			$str = strtr(
				$str,
				[
					"\x1B0" => '!', "\x1B1" => '"', "\x1B2" => "'", "\x1B3" => '(',
					"\x1B4" => ')', "\x1B5" => '*', "\x1B6" => '[', "\x1B7" => '\\',
					"\x1B8" => ']', "\x1B9" => '^', "\x1BA" => '_', "\x1BB" => '`',
					"\x1BC" => '~'
				]
			);
		}

		return $str;
	}

	/**
	* Test whether given position is preceded by whitespace
	*
	* @param  integer $pos
	* @return bool
	*/
	public function isAfterWhitespace($pos)
	{
		return ($pos > 0 && $this->isWhitespace($this->text[$pos - 1]));
	}

	/**
	* Test whether given character is alphanumeric
	*
	* @param  string $chr
	* @return bool
	*/
	public function isAlnum($chr)
	{
		return (strpos(' abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789', $chr) > 0);
	}

	/**
	* Test whether given position is followed by whitespace
	*
	* @param  integer $pos
	* @return bool
	*/
	public function isBeforeWhitespace($pos)
	{
		return $this->isWhitespace($this->text[$pos + 1]);
	}

	/**
	* Test whether a length of text is surrounded by alphanumeric characters
	*
	* @param  integer $pos Start of the text
	* @param  integer $len Length of the text
	* @return bool
	*/
	public function isSurroundedByAlnum($pos, $len)
	{
		return ($pos > 0 && $this->isAlnum($this->text[$pos - 1]) && $this->isAlnum($this->text[$pos + $len]));
	}

	/**
	* Test whether given character is an ASCII whitespace character
	*
	* NOTE: newlines are normalized to LF before parsing so we don't have to check for CR
	*
	* @param  string $chr
	* @return bool
	*/
	public function isWhitespace($chr)
	{
		return (strpos(" \n\t", $chr) !== false);
	}

	/**
	* Mark the boundary of a block in the original text
	*
	* @param  integer $pos
	* @return void
	*/
	public function markBoundary($pos)
	{
		$this->text[$pos] = "\x17";
	}

	/**
	* @param  mixed $offset
	* @return bool
	*/
	public function offsetExists($offset)
	{
		return isset($this->text[$offset]);
	}

	/**
	* @param  mixed  $offset
	* @return string
	*/
	public function offsetGet($offset)
	{
		return $this->text[$offset];
	}

	/**
	* @param  mixed  $offset
	* @param  string $offset
	* @return void
	*/
	public function offsetSet($offset, $value)
	{
		$this->text[$offset] = $value;
	}

	/**
	* @param  mixed  $offset
	* @return void
	*/
	public function offsetUnset($offset)
	{
		unset($this->text[$offset]);
	}

	/**
	* Overwrite part of the text with substitution characters ^Z (0x1A)
	*
	* @param  integer $pos Start of the range
	* @param  integer $len Length of text to overwrite
	* @return void
	*/
	public function overwrite($pos, $len)
	{
		if ($len > 0)
		{
			$this->text = substr($this->text, 0, $pos) . str_repeat("\x1A", $len) . substr($this->text, $pos + $len);
		}
	}
}

1		<?php
2
3		/**
4		* @package s9e\TextFormatter
5		* @copyright Copyright (c) 2010-2017 The s9e Authors
6		* @license http://www.opensource.org/licenses/mit-license.php The MIT License
7		*/
8		namespace s9e\TextFormatter\Plugins\Litedown\Parser;
9
10		use ArrayAccess;
11
12		class ParsedText implements ArrayAccess
13		{
14		/**
15		* @var bool Whether to decode HTML entities when decoding text
16		*/
17		public $decodeHtmlEntities = false;
18
19		/**
20		* @var bool Whether text contains escape characters
21		*/
22		protected $hasEscapedChars = false;
23
24		/**
25		* @var array Array of [label => link info]
26		*/
27		public $linkReferences = [];
28
29		/**
30		* @var string Text being parsed
31		*/
32		protected $text;
33
34		/**
35		* @param string $text Original text
36		*/
37	263	public function __construct($text)
38		{
39	263	if (strpos($text, '\\') !== false && preg_match('/\\\\[!"\'()*[\\\\\\]^_`~]/', $text))
40	263	{
41	15	$this->hasEscapedChars = true;
42
43		// Encode escaped literals that have a special meaning otherwise, so that we don't have
44		// to take them into account in regexps
45	15	$text = strtr(
46	15	$text,
47		[
48	15	'\\!' => "\x1B0", '\\"' => "\x1B1", "\\'" => "\x1B2", '\\(' => "\x1B3",
49	15	'\\)' => "\x1B4", '\\*' => "\x1B5", '\\[' => "\x1B6", '\\\\' => "\x1B7",
50	15	'\\]' => "\x1B8", '\\^' => "\x1B9", '\\_' => "\x1BA", '\\`' => "\x1BB",
51		'\\~' => "\x1BC"
52	15	]
53	15	);
54	15	}
55
56		// We append a couple of lines and a non-whitespace character at the end of the text in
57		// order to trigger the closure of all open blocks such as quotes and lists
58	263	$this->text = $text . "\n\n\x17";
59	263	}
60
61		/**
62		* @return string
63		*/
64	263	public function __toString()
65		{
66	263	return $this->text;
67		}
68
69		/**
70		* Decode a chunk of encoded text to be used as an attribute value
71		*
72		* Decodes escaped literals and removes slashes and 0x1A characters
73		*
74		* @param string $str Encoded text
75		* @return string Decoded text
76		*/
77	69	public function decode($str)
78		{
79	69	if ($this->decodeHtmlEntities && strpos($str, '&') !== false)
80	69	{
81	1	$str = html_entity_decode($str, ENT_QUOTES, 'UTF-8');
82	1	}
83	69	$str = str_replace("\x1A", '', $str);
84
85	69	if ($this->hasEscapedChars)
86	69	{
87	7	$str = strtr(
88	7	$str,
89		[
90	7	"\x1B0" => '!', "\x1B1" => '"', "\x1B2" => "'", "\x1B3" => '(',
91	7	"\x1B4" => ')', "\x1B5" => '*', "\x1B6" => '[', "\x1B7" => '\\',
92	7	"\x1B8" => ']', "\x1B9" => '^', "\x1BA" => '_', "\x1BB" => '`',
93		"\x1BC" => '~'
94	7	]
95	7	);
96	7	}
97
98	69	return $str;
99		}
100
101		/**
102		* Test whether given position is preceded by whitespace
103		*
104		* @param integer $pos
105		* @return bool
106		*/
107	59	public function isAfterWhitespace($pos)
108		{
109	59	return ($pos > 0 && $this->isWhitespace($this->text[$pos - 1]));
110		}
111
112		/**
113		* Test whether given character is alphanumeric
114		*
115		* @param string $chr
116		* @return bool
117		*/
118	8	public function isAlnum($chr)
119		{
120	8	return (strpos(' abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789', $chr) > 0);
121		}
122
123		/**
124		* Test whether given position is followed by whitespace
125		*
126		* @param integer $pos
127		* @return bool
128		*/
129	59	public function isBeforeWhitespace($pos)
130		{
131	59	return $this->isWhitespace($this->text[$pos + 1]);
132		}
133
134		/**
135		* Test whether a length of text is surrounded by alphanumeric characters
136		*
137		* @param integer $pos Start of the text
138		* @param integer $len Length of the text
139		* @return bool
140		*/
141	8	public function isSurroundedByAlnum($pos, $len)
142		{
143	8	return ($pos > 0 && $this->isAlnum($this->text[$pos - 1]) && $this->isAlnum($this->text[$pos + $len]));
144		}
145
146		/**
147		* Test whether given character is an ASCII whitespace character
148		*
149		* NOTE: newlines are normalized to LF before parsing so we don't have to check for CR
150		*
151		* @param string $chr
152		* @return bool
153		*/
154	59	public function isWhitespace($chr)
155		{
156	59	return (strpos(" \n\t", $chr) !== false);
157		}
158
159		/**
160		* Mark the boundary of a block in the original text
161		*
162		* @param integer $pos
163		* @return void
164		*/
165	263	public function markBoundary($pos)
166		{
167	263	$this->text[$pos] = "\x17";
168	263	}
169
170		/**
171		* @param mixed $offset
172		* @return bool
173		*/
174		public function offsetExists($offset)
175		{
176		return isset($this->text[$offset]);
177		}
178
179		/**
180		* @param mixed $offset
181		* @return string
182		*/
183	130	public function offsetGet($offset)
184		{
185	130	return $this->text[$offset];
186		}
187
188		/**
189		* @param mixed $offset
190		* @param string $offset
191		* @return void
192		*/
193		public function offsetSet($offset, $value)
194		{
195		$this->text[$offset] = $value;
196		}
197
198		/**
199		* @param mixed $offset
200		* @return void
201		*/
202		public function offsetUnset($offset)
203		{
204		unset($this->text[$offset]);
205		}
206
207		/**
208		* Overwrite part of the text with substitution characters ^Z (0x1A)
209		*
210		* @param integer $pos Start of the range
211		* @param integer $len Length of text to overwrite
212		* @return void
213		*/
214	169	public function overwrite($pos, $len)
215		{
216	169	if ($len > 0)
217	169	{
218	169	$this->text = substr($this->text, 0, $pos) . str_repeat("\x1A", $len) . substr($this->text, $pos + $len);
219	169	}
220		}
221		}

s9e / TextFormatter

Branch — wip/litedown (039d9d)

ParsedText::overwrite() A

Complexity

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Duplication

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