maxbuttons / assets / libraries / scssphp / src / Formatter.php

Formatter.php in MaxButtons – Create buttons 7.13, at assets/libraries/scssphp/src/Formatter.php

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1	<?php
2	/**
3	* SCSSPHP
4	*
5	* @copyright 2012-2018 Leaf Corcoran
6	*
7	* @license http://opensource.org/licenses/MIT MIT
8	*
9	* @link http://leafo.github.io/scssphp
10	*/
11
12	namespace Leafo\ScssPhp;
13
14	use Leafo\ScssPhp\Formatter\OutputBlock;
15	use Leafo\ScssPhp\SourceMap\SourceMapGenerator;
16
17	/**
18	* Base formatter
19	*
20	* @author Leaf Corcoran <leafot@gmail.com>
21	*/
22	abstract class Formatter
23	{
24	/**
25	* @var integer
26	*/
27	public $indentLevel;
28
29	/**
30	* @var string
31	*/
32	public $indentChar;
33
34	/**
35	* @var string
36	*/
37	public $break;
38
39	/**
40	* @var string
41	*/
42	public $open;
43
44	/**
45	* @var string
46	*/
47	public $close;
48
49	/**
50	* @var string
51	*/
52	public $tagSeparator;
53
54	/**
55	* @var string
56	*/
57	public $assignSeparator;
58
59	/**
60	* @var boolean
61	*/
62	public $keepSemicolons;
63
64	/**
65	* @var \Leafo\ScssPhp\Formatter\OutputBlock
66	*/
67	protected $currentBlock;
68
69	/**
70	* @var integer
71	*/
72	protected $currentLine;
73
74	/**
75	* @var integer
76	*/
77	protected $currentColumn;
78
79	/**
80	* @var \Leafo\ScssPhp\SourceMap\SourceMapGenerator
81	*/
82	protected $sourceMapGenerator;
83
84	/**
85	* Initialize formatter
86	*
87	* @api
88	*/
89	abstract public function __construct();
90
91	/**
92	* Return indentation (whitespace)
93	*
94	* @return string
95	*/
96	protected function indentStr()
97	{
98	return '';
99	}
100
101	/**
102	* Return property assignment
103	*
104	* @api
105	*
106	* @param string $name
107	* @param mixed $value
108	*
109	* @return string
110	*/
111	public function property($name, $value)
112	{
113	return rtrim($name) . $this->assignSeparator . $value . ';';
114	}
115
116	/**
117	* Strip semi-colon appended by property(); it's a separator, not a terminator
118	*
119	* @api
120	*
121	* @param array $lines
122	*/
123	public function stripSemicolon(&$lines)
124	{
125	if ($this->keepSemicolons) {
126	return;
127	}
128
129	if (($count = count($lines))
130	&& substr($lines[$count - 1], -1) === ';'
131	) {
132	$lines[$count - 1] = substr($lines[$count - 1], 0, -1);
133	}
134	}
135
136	/**
137	* Output lines inside a block
138	*
139	* @param \Leafo\ScssPhp\Formatter\OutputBlock $block
140	*/
141	protected function blockLines(OutputBlock $block)
142	{
143	$inner = $this->indentStr();
144
145	$glue = $this->break . $inner;
146
147	$this->write($inner . implode($glue, $block->lines));
148
149	if (! empty($block->children)) {
150	$this->write($this->break);
151	}
152	}
153
154	/**
155	* Output block selectors
156	*
157	* @param \Leafo\ScssPhp\Formatter\OutputBlock $block
158	*/
159	protected function blockSelectors(OutputBlock $block)
160	{
161	$inner = $this->indentStr();
162
163	$this->write($inner
164	. implode($this->tagSeparator, $block->selectors)
165	. $this->open . $this->break);
166	}
167
168	/**
169	* Output block children
170	*
171	* @param \Leafo\ScssPhp\Formatter\OutputBlock $block
172	*/
173	protected function blockChildren(OutputBlock $block)
174	{
175	foreach ($block->children as $child) {
176	$this->block($child);
177	}
178	}
179
180	/**
181	* Output non-empty block
182	*
183	* @param \Leafo\ScssPhp\Formatter\OutputBlock $block
184	*/
185	protected function block(OutputBlock $block)
186	{
187	if (empty($block->lines) && empty($block->children)) {
188	return;
189	}
190
191	$this->currentBlock = $block;
192
193	$pre = $this->indentStr();
194
195	if (! empty($block->selectors)) {
196	$this->blockSelectors($block);
197
198	$this->indentLevel++;
199	}
200
201	if (! empty($block->lines)) {
202	$this->blockLines($block);
203	}
204
205	if (! empty($block->children)) {
206	$this->blockChildren($block);
207	}
208
209	if (! empty($block->selectors)) {
210	$this->indentLevel--;
211
212	if (empty($block->children)) {
213	$this->write($this->break);
214	}
215
216	$this->write($pre . $this->close . $this->break);
217	}
218	}
219
220	/**
221	* Entry point to formatting a block
222	*
223	* @api
224	*
225	* @param \Leafo\ScssPhp\Formatter\OutputBlock $block An abstract syntax tree
226	* @param \Leafo\ScssPhp\SourceMap\SourceMapGenerator\|null $sourceMapGenerator Optional source map generator
227	*
228	* @return string
229	*/
230	public function format(OutputBlock $block, SourceMapGenerator $sourceMapGenerator = null)
231	{
232	$this->sourceMapGenerator = null;
233
234	if ($sourceMapGenerator) {
235	$this->currentLine = 1;
236	$this->currentColumn = 0;
237	$this->sourceMapGenerator = $sourceMapGenerator;
238	}
239
240	ob_start();
241
242	$this->block($block);
243
244	$out = ob_get_clean();
245
246	return $out;
247	}
248
249	/**
250	* @param string $str
251	*/
252	protected function write($str)
253	{
254	if ($this->sourceMapGenerator) {
255	$this->sourceMapGenerator->addMapping(
256	$this->currentLine,
257	$this->currentColumn,
258	$this->currentBlock->sourceLine,
259	$this->currentBlock->sourceColumn - 1, //columns from parser are off by one
260	$this->currentBlock->sourceName
261	);
262
263	$lines = explode("\n", $str);
264	$lineCount = count($lines);
265	$this->currentLine += $lineCount-1;
266
267	$lastLine = array_pop($lines);
268
269	$this->currentColumn = ($lineCount === 1 ? $this->currentColumn : 0) + strlen($lastLine);
270	}
271
272	echo $str;
273	}
274	}
275