JSMin::isAlphaNum() - Code Metrics - Inspection of "Add namespace to new controls; fix misc issues" - pradosoft/prado - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — namespace2 ( 8a6673...791eac )

by Fabio

created 2016-11-18 11:07 UTC

JSMin::isAlphaNum() A

↳ Parent: JSMin

Complexity

Conditions	3
Paths	3

Size

Total Lines	3
Code Lines	2

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	3
eloc	2
nc	3
nop	1
dl	0
loc	3
rs	10
c	0
b	0
f	0

<?php
/**
 * jsmin.php - PHP implementation of Douglas Crockford's JSMin.
 *
 * This is pretty much a direct port of jsmin.c to PHP with just a few
 * PHP-specific performance tweaks. Also, whereas jsmin.c reads from stdin and
 * outputs to stdout, this library accepts a string as input and returns another
 * string as output.
 *
 * PHP 5 or higher is required.
 *
 * Permission is hereby granted to use this version of the library under the
 * same terms as jsmin.c, which has the following license:
 *
 * --
 * Copyright (c) 2002 Douglas Crockford  (www.crockford.com)
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
 * of the Software, and to permit persons to whom the Software is furnished to do
 * so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * The Software shall be used for Good, not Evil.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 * --
 *
 * @package Prado\Web\Javascripts
 * @author Ryan Grove <[email protected]>
 * @copyright 2002 Douglas Crockford <[email protected]> (jsmin.c)
 * @copyright 2008 Ryan Grove <[email protected]> (PHP port)
 * @license http://opensource.org/licenses/mit-license.php MIT License
 * @link http://code.google.com/p/jsmin-php/
 */

namespace Prado\Web\Javascripts;

class JSMin {
  const ORD_LF    = 10;
  const ORD_SPACE = 32;

  protected $a           = '';
  protected $b           = '';
  protected $input       = '';
  protected $inputIndex  = 0;
  protected $inputLength = 0;
  protected $lookAhead   = null;
  protected $output      = '';

  // -- Public Static Methods --------------------------------------------------

  public static function minify($js) {
    $jsmin = new JSMin($js);
    return $jsmin->min();
  }

  // -- Public Instance Methods ------------------------------------------------

  public function __construct($input) {
    $this->input       = str_replace("\r\n", "\n", $input);
    $this->inputLength = strlen($this->input);
  }

  // -- Protected Instance Methods ---------------------------------------------

  protected function action($d) {
    switch($d) {
      case 1:

        $this->output .= $this->a;

      case 2:

        $this->a = $this->b;

        if ($this->a === "'" || $this->a === '"') {
          for (;;) {
            $this->output .= $this->a;
            $this->a       = $this->get();

            if ($this->a === $this->b) {
              break;
            }

            if (ord($this->a) <= self::ORD_LF) {
              throw new JSMinException('Unterminated string literal.');
            }

            if ($this->a === '\\') {
              $this->output .= $this->a;
              $this->a       = $this->get();
            }
          }
        }

      case 3:
        $this->b = $this->next();

        if ($this->b === '/' && (
            $this->a === '(' || $this->a === ',' || $this->a === '=' ||
            $this->a === ':' || $this->a === '[' || $this->a === '!' ||
            $this->a === '&' || $this->a === '|' || $this->a === '?')) {

          $this->output .= $this->a . $this->b;

          for (;;) {
            $this->a = $this->get();

            if ($this->a === '/') {
              break;
            } elseif ($this->a === '\\') {
              $this->output .= $this->a;
              $this->a       = $this->get();
            } elseif (ord($this->a) <= self::ORD_LF) {
              throw new JSMinException('Unterminated regular expression '.
                  'literal.');
            }

            $this->output .= $this->a;
          }

          $this->b = $this->next();
        }
    }
  }

  protected function get() {
    $c = $this->lookAhead;
    $this->lookAhead = null;

    if ($c === null) {
      if ($this->inputIndex < $this->inputLength) {
        $c = $this->input[$this->inputIndex];
        $this->inputIndex += 1;
      } else {
        $c = null;
      }
    }

    if ($c === "\r") {
      return "\n";
    }

    if ($c === null || $c === "\n" || ord($c) >= self::ORD_SPACE) {
      return $c;
    }

    return ' ';
  }

  protected function isAlphaNum($c) {
    return ord($c) > 126 || $c === '\\' || preg_match('/^[\w\$]$/', $c) === 1;
  }

  protected function min() {
    $this->a = "\n";
    $this->action(3);

    while ($this->a !== null) {
      switch ($this->a) {
        case ' ':
          if ($this->isAlphaNum($this->b)) {
            $this->action(1);
          } else {
            $this->action(2);
          }
          break;

        case "\n":
          switch ($this->b) {
            case '{':
            case '[':
            case '(':
            case '+':
            case '-':
              $this->action(1);
              break;

            case ' ':
              $this->action(3);
              break;

            default:
              if ($this->isAlphaNum($this->b)) {
                $this->action(1);
              }
              else {
                $this->action(2);
              }
          }
          break;

        default:
          switch ($this->b) {
            case ' ':
              if ($this->isAlphaNum($this->a)) {
                $this->action(1);
                break;
              }

              $this->action(3);
              break;

            case "\n":
              switch ($this->a) {
                case '}':
                case ']':
                case ')':
                case '+':
                case '-':
                case '"':
                case "'":
                  $this->action(1);
                  break;

                default:
                  if ($this->isAlphaNum($this->a)) {
                    $this->action(1);
                  }
                  else {
                    $this->action(3);
                  }
              }
              break;

            default:
              $this->action(1);
              break;
          }
      }
    }

    return $this->output;
  }

  protected function next() {
    $c = $this->get();

    if ($c === '/') {
      switch($this->peek()) {
        case '/':

          for (;;) {
            $c = $this->get();

            if (ord($c) <= self::ORD_LF) {
              return $c;
            }
          }

        case '*':

          $this->get();

          for (;;) {
            switch($this->get()) {
              case '*':
                if ($this->peek() === '/') {
                  $this->get();
                  return ' ';
                }
                break;

              case null:
                throw new JSMinException('Unterminated comment.');
            }
          }

        default:
          return $c;
      }
    }

    return $c;
  }

  protected function peek() {
    $this->lookAhead = $this->get();
    return $this->lookAhead;
  }
}

1			<?php
2			/**
3			* jsmin.php - PHP implementation of Douglas Crockford's JSMin.
4			*
5			* This is pretty much a direct port of jsmin.c to PHP with just a few
6			* PHP-specific performance tweaks. Also, whereas jsmin.c reads from stdin and
7			* outputs to stdout, this library accepts a string as input and returns another
8			* string as output.
9			*
10			* PHP 5 or higher is required.
11			*
12			* Permission is hereby granted to use this version of the library under the
13			* same terms as jsmin.c, which has the following license:
14			*
15			* --
16			* Copyright (c) 2002 Douglas Crockford (www.crockford.com)
17			*
18			* Permission is hereby granted, free of charge, to any person obtaining a copy of
19			* this software and associated documentation files (the "Software"), to deal in
20			* the Software without restriction, including without limitation the rights to
21			* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
22			* of the Software, and to permit persons to whom the Software is furnished to do
23			* so, subject to the following conditions:
24			*
25			* The above copyright notice and this permission notice shall be included in all
26			* copies or substantial portions of the Software.
27			*
28			* The Software shall be used for Good, not Evil.
29			*
30			* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
31			* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
32			* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
33			* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
34			* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
35			* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
36			* SOFTWARE.
37			* --
38			*
39			* @package Prado\Web\Javascripts
40			* @author Ryan Grove <[email protected]>
41			* @copyright 2002 Douglas Crockford <[email protected]> (jsmin.c)
42			* @copyright 2008 Ryan Grove <[email protected]> (PHP port)
43			* @license http://opensource.org/licenses/mit-license.php MIT License
44			* @link http://code.google.com/p/jsmin-php/
45			*/
46
47			namespace Prado\Web\Javascripts;
48
49			class JSMin {
50			const ORD_LF = 10;
51			const ORD_SPACE = 32;
52
53			protected $a = '';
54			protected $b = '';
55			protected $input = '';
56			protected $inputIndex = 0;
57			protected $inputLength = 0;
58			protected $lookAhead = null;
59			protected $output = '';
60
61			// -- Public Static Methods --------------------------------------------------
62
63			public static function minify($js) {
64			$jsmin = new JSMin($js);
65			return $jsmin->min();
66			}
67
68			// -- Public Instance Methods ------------------------------------------------
69
70			public function __construct($input) {
71			$this->input = str_replace("\r\n", "\n", $input);
72			$this->inputLength = strlen($this->input);
73			}
74
75			// -- Protected Instance Methods ---------------------------------------------
76
77			protected function action($d) {
78			switch($d) {
79			case 1:
			0 ignored issues – show Coding Style introduced 2016-02-29 19:57 UTC by Report Bug Copy Issue Report There must be a comment when fall-through is intentional in a non-empty case body Loading history...
80			$this->output .= $this->a;
81
82			case 2:
			0 ignored issues – show Coding Style introduced 2016-02-29 19:57 UTC by Report Bug Copy Issue Report There must be a comment when fall-through is intentional in a non-empty case body Loading history...
83			$this->a = $this->b;
84
85			if ($this->a === "'" \|\| $this->a === '"') {
86			for (;;) {
87			$this->output .= $this->a;
88			$this->a = $this->get();
89
90			if ($this->a === $this->b) {
91			break;
92			}
93
94			if (ord($this->a) <= self::ORD_LF) {
95			throw new JSMinException('Unterminated string literal.');
96			}
97
98			if ($this->a === '\\') {
99			$this->output .= $this->a;
100			$this->a = $this->get();
101			}
102			}
103			}
104
105			case 3:
106			$this->b = $this->next();
107
108			if ($this->b === '/' && (
109			$this->a === '(' \|\| $this->a === ',' \|\| $this->a === '=' \|\|
110			$this->a === ':' \|\| $this->a === '[' \|\| $this->a === '!' \|\|
111			$this->a === '&' \|\| $this->a === '\|' \|\| $this->a === '?')) {
112
113			$this->output .= $this->a . $this->b;
114
115			for (;;) {
116			$this->a = $this->get();
117
118			if ($this->a === '/') {
119			break;
120			} elseif ($this->a === '\\') {
121			$this->output .= $this->a;
122			$this->a = $this->get();
123			} elseif (ord($this->a) <= self::ORD_LF) {
124			throw new JSMinException('Unterminated regular expression '.
125			'literal.');
126			}
127
128			$this->output .= $this->a;
129			}
130
131			$this->b = $this->next();
132			}
133			}
134			}
135
136			protected function get() {
137			$c = $this->lookAhead;
138			$this->lookAhead = null;
139
140			if ($c === null) {
141			if ($this->inputIndex < $this->inputLength) {
142			$c = $this->input[$this->inputIndex];
143			$this->inputIndex += 1;
144			} else {
145			$c = null;
146			}
147			}
148
149			if ($c === "\r") {
150			return "\n";
151			}
152
153			if ($c === null \|\| $c === "\n" \|\| ord($c) >= self::ORD_SPACE) {
154			return $c;
155			}
156
157			return ' ';
158			}
159
160			protected function isAlphaNum($c) {
161			return ord($c) > 126 \|\| $c === '\\' \|\| preg_match('/^[\w\$]$/', $c) === 1;
162			}
163
164			protected function min() {
165			$this->a = "\n";
166			$this->action(3);
167
168			while ($this->a !== null) {
169			switch ($this->a) {
170			case ' ':
171			if ($this->isAlphaNum($this->b)) {
172			$this->action(1);
173			} else {
174			$this->action(2);
175			}
176			break;
177
178			case "\n":
179			switch ($this->b) {
180			case '{':
181			case '[':
182			case '(':
183			case '+':
184			case '-':
185			$this->action(1);
186			break;
187
188			case ' ':
189			$this->action(3);
190			break;
191
192			default:
193			if ($this->isAlphaNum($this->b)) {
194			$this->action(1);
195			}
196			else {
197			$this->action(2);
198			}
199			}
200			break;
201
202			default:
203			switch ($this->b) {
204			case ' ':
205			if ($this->isAlphaNum($this->a)) {
206			$this->action(1);
207			break;
208			}
209
210			$this->action(3);
211			break;
212
213			case "\n":
214			switch ($this->a) {
215			case '}':
216			case ']':
217			case ')':
218			case '+':
219			case '-':
220			case '"':
221			case "'":
222			$this->action(1);
223			break;
224
225			default:
226			if ($this->isAlphaNum($this->a)) {
227			$this->action(1);
228			}
229			else {
230			$this->action(3);
231			}
232			}
233			break;
234
235			default:
236			$this->action(1);
237			break;
238			}
239			}
240			}
241
242			return $this->output;
243			}
244
245			protected function next() {
246			$c = $this->get();
247
248			if ($c === '/') {
249			switch($this->peek()) {
250			case '/':
			0 ignored issues – show Coding Style introduced 2016-02-29 19:57 UTC by Report Bug Copy Issue Report There must be a comment when fall-through is intentional in a non-empty case body Loading history...
251			for (;;) {
252			$c = $this->get();
253
254			if (ord($c) <= self::ORD_LF) {
255			return $c;
256			}
257			}
258
259			case '*':
			0 ignored issues – show Coding Style introduced 2016-02-29 19:57 UTC by Report Bug Copy Issue Report There must be a comment when fall-through is intentional in a non-empty case body Loading history...
260			$this->get();
261
262			for (;;) {
263			switch($this->get()) {
264			case '*':
265			if ($this->peek() === '/') {
266			$this->get();
267			return ' ';
268			}
269			break;
270
271			case null:
272			throw new JSMinException('Unterminated comment.');
273			}
274			}
275
276			default:
277			return $c;
278			}
279			}
280
281			return $c;
282			}
283
284			protected function peek() {
285			$this->lookAhead = $this->get();
286			return $this->lookAhead;
287			}
288			}

pradosoft / prado

Push — namespace2 ( 8a6673...791eac )

JSMin::isAlphaNum() A

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