|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
declare(strict_types=1); |
|
4
|
|
|
|
|
5
|
|
|
/* |
|
6
|
|
|
* This is part of the league/commonmark package. |
|
7
|
|
|
* |
|
8
|
|
|
* (c) Martin Hasoň <[email protected]> |
|
9
|
|
|
* (c) Webuni s.r.o. <[email protected]> |
|
10
|
|
|
* (c) Colin O'Dell <[email protected]> |
|
11
|
|
|
* |
|
12
|
|
|
* For the full copyright and license information, please view the LICENSE |
|
13
|
|
|
* file that was distributed with this source code. |
|
14
|
|
|
*/ |
|
15
|
|
|
|
|
16
|
|
|
namespace League\CommonMark\Extension\Table; |
|
17
|
|
|
|
|
18
|
|
|
use League\CommonMark\Parser\Block\BlockStart; |
|
19
|
|
|
use League\CommonMark\Parser\Block\BlockStartParserInterface; |
|
20
|
|
|
use League\CommonMark\Parser\Block\ParagraphParser; |
|
21
|
|
|
use League\CommonMark\Parser\Cursor; |
|
22
|
|
|
use League\CommonMark\Parser\MarkdownParserStateInterface; |
|
23
|
|
|
|
|
24
|
|
|
final class TableStartParser implements BlockStartParserInterface |
|
25
|
|
|
{ |
|
26
|
63 |
|
public function tryStart(Cursor $cursor, MarkdownParserStateInterface $parserState): ?BlockStart |
|
27
|
|
|
{ |
|
28
|
63 |
|
$paragraph = $parserState->getParagraphContent(); |
|
29
|
63 |
|
if ($paragraph === null || \strpos($paragraph, '|') === false) { |
|
30
|
60 |
|
return BlockStart::none(); |
|
31
|
|
|
} |
|
32
|
|
|
|
|
33
|
33 |
|
$columns = self::parseSeparator($cursor); |
|
34
|
33 |
|
if (\count($columns) === 0) { |
|
35
|
3 |
|
return BlockStart::none(); |
|
36
|
|
|
} |
|
37
|
|
|
|
|
38
|
33 |
|
$lines = \explode("\n", $paragraph); |
|
39
|
33 |
|
$lastLine = \array_pop($lines); |
|
40
|
|
|
|
|
41
|
33 |
|
$headerCells = TableParser::split($lastLine); |
|
42
|
33 |
|
if (\count($headerCells) > \count($columns)) { |
|
43
|
3 |
|
return BlockStart::none(); |
|
44
|
|
|
} |
|
45
|
|
|
|
|
46
|
30 |
|
$cursor->advanceToEnd(); |
|
47
|
|
|
|
|
48
|
30 |
|
$parsers = []; |
|
49
|
|
|
|
|
50
|
30 |
|
if (\count($lines) > 0) { |
|
51
|
|
|
$p = new ParagraphParser(); |
|
52
|
|
|
$p->addLine(\implode("\n", $lines)); |
|
53
|
|
|
$parsers[] = $p; |
|
54
|
|
|
} |
|
55
|
|
|
|
|
56
|
30 |
|
$parsers[] = new TableParser($columns, $headerCells); |
|
57
|
|
|
|
|
58
|
30 |
|
return BlockStart::of(...$parsers) |
|
59
|
30 |
|
->at($cursor) |
|
60
|
30 |
|
->replaceActiveBlockParser(); |
|
61
|
|
|
} |
|
62
|
|
|
|
|
63
|
|
|
/** |
|
64
|
|
|
* @return array<int, string|null> |
|
65
|
|
|
* |
|
66
|
|
|
* @psalm-return array<int, TableCell::ALIGN_*|null> |
|
67
|
|
|
* |
|
68
|
|
|
* @phpstan-return array<int, TableCell::ALIGN_*|null> |
|
69
|
|
|
*/ |
|
70
|
33 |
|
private static function parseSeparator(Cursor $cursor): array |
|
71
|
|
|
{ |
|
72
|
33 |
|
$columns = []; |
|
73
|
33 |
|
$pipes = 0; |
|
74
|
33 |
|
$valid = false; |
|
75
|
|
|
|
|
76
|
33 |
|
while (! $cursor->isAtEnd()) { |
|
77
|
33 |
|
switch ($c = $cursor->getCharacter()) { |
|
78
|
33 |
|
case '|': |
|
79
|
33 |
|
$cursor->advanceBy(1); |
|
80
|
33 |
|
$pipes++; |
|
81
|
33 |
|
if ($pipes > 1) { |
|
82
|
|
|
// More than one adjacent pipe not allowed |
|
83
|
|
|
return []; |
|
84
|
|
|
} |
|
85
|
|
|
|
|
86
|
|
|
// Need at least one pipe, even for a one-column table |
|
87
|
33 |
|
$valid = true; |
|
88
|
33 |
|
break; |
|
89
|
33 |
|
case '-': |
|
90
|
30 |
|
case ':': |
|
91
|
33 |
|
if ($pipes === 0 && \count($columns) > 0) { |
|
92
|
|
|
// Need a pipe after the first column (first column doesn't need to start with one) |
|
93
|
|
|
return []; |
|
94
|
|
|
} |
|
95
|
|
|
|
|
96
|
33 |
|
$left = false; |
|
97
|
33 |
|
$right = false; |
|
98
|
33 |
|
if ($c === ':') { |
|
99
|
6 |
|
$left = true; |
|
100
|
6 |
|
$cursor->advanceBy(1); |
|
101
|
|
|
} |
|
102
|
|
|
|
|
103
|
33 |
|
if ($cursor->match('/^-+/') === null) { |
|
104
|
|
|
// Need at least one dash |
|
105
|
|
|
return []; |
|
106
|
|
|
} |
|
107
|
|
|
|
|
108
|
33 |
|
if ($cursor->getCharacter() === ':') { |
|
109
|
6 |
|
$right = true; |
|
110
|
6 |
|
$cursor->advanceBy(1); |
|
111
|
|
|
} |
|
112
|
|
|
|
|
113
|
33 |
|
$columns[] = self::getAlignment($left, $right); |
|
114
|
|
|
// Next, need another pipe |
|
115
|
33 |
|
$pipes = 0; |
|
116
|
33 |
|
break; |
|
117
|
30 |
|
case ' ': |
|
118
|
3 |
|
case "\t": |
|
119
|
|
|
// White space is allowed between pipes and columns |
|
120
|
30 |
|
$cursor->advanceToNextNonSpaceOrTab(); |
|
121
|
30 |
|
break; |
|
122
|
|
|
default: |
|
123
|
|
|
// Any other character is invalid |
|
124
|
3 |
|
return []; |
|
125
|
|
|
} |
|
126
|
|
|
} |
|
127
|
|
|
|
|
128
|
33 |
|
if (! $valid) { |
|
129
|
|
|
return []; |
|
130
|
|
|
} |
|
131
|
|
|
|
|
132
|
33 |
|
return $columns; |
|
133
|
|
|
} |
|
134
|
|
|
|
|
135
|
|
|
/** |
|
136
|
|
|
* @psalm-return TableCell::ALIGN_*|null |
|
137
|
|
|
* |
|
138
|
|
|
* @phpstan-return TableCell::ALIGN_*|null |
|
139
|
|
|
* |
|
140
|
|
|
* @psalm-pure |
|
141
|
|
|
*/ |
|
142
|
33 |
|
private static function getAlignment(bool $left, bool $right): ?string |
|
143
|
|
|
{ |
|
144
|
33 |
|
if ($left && $right) { |
|
145
|
6 |
|
return TableCell::ALIGN_CENTER; |
|
146
|
|
|
} |
|
147
|
|
|
|
|
148
|
33 |
|
if ($left) { |
|
149
|
3 |
|
return TableCell::ALIGN_LEFT; |
|
150
|
|
|
} |
|
151
|
|
|
|
|
152
|
33 |
|
if ($right) { |
|
153
|
6 |
|
return TableCell::ALIGN_RIGHT; |
|
154
|
|
|
} |
|
155
|
|
|
|
|
156
|
30 |
|
return null; |
|
157
|
|
|
} |
|
158
|
|
|
} |
|
159
|
|
|
|
thephpleague /
commonmark
