|
1
|
|
|
<?php |
|
2
|
|
|
/* |
|
3
|
|
|
* citeproc-php |
|
4
|
|
|
* |
|
5
|
|
|
* @link http://github.com/seboettg/citeproc-php for the source repository |
|
6
|
|
|
* @copyright Copyright (c) 2017 Sebastian Böttger. |
|
7
|
|
|
* @license https://opensource.org/licenses/MIT |
|
8
|
|
|
*/ |
|
9
|
|
|
|
|
10
|
|
|
namespace Seboettg\CiteProc\Util; |
|
11
|
|
|
|
|
12
|
|
|
use Seboettg\CiteProc\Style\Options\PageRangeFormats; |
|
13
|
|
|
|
|
14
|
|
|
/** |
|
15
|
|
|
* Class PageHelper |
|
16
|
|
|
* @package Seboettg\CiteProc\Util |
|
17
|
|
|
* @author Sebastian Böttger <[email protected]> |
|
18
|
|
|
*/ |
|
19
|
|
|
class PageHelper |
|
20
|
|
|
{ |
|
21
|
|
|
|
|
22
|
|
|
public static function processPageRangeFormats($ranges, $pageRangeFormat) |
|
23
|
|
|
{ |
|
24
|
|
|
list($from, $to) = $ranges; |
|
25
|
|
|
|
|
26
|
|
|
if (!empty($pageRangeFormat) ) { |
|
27
|
|
|
|
|
28
|
|
|
switch ($pageRangeFormat) { |
|
29
|
|
|
case PageRangeFormats::MINIMAL: |
|
30
|
|
|
$resTo = self::renderMinimal($from, $to); |
|
31
|
|
|
break; |
|
32
|
|
|
case PageRangeFormats::MINIMAL_TWO: |
|
33
|
|
|
if (strlen($to) > 2) { |
|
34
|
|
|
$resTo = self::renderMinimal($from, $to, strlen($to)-2); |
|
35
|
|
|
} else { |
|
36
|
|
|
$resTo = $to; |
|
37
|
|
|
} |
|
38
|
|
|
break; |
|
39
|
|
|
case PageRangeFormats::CHICAGO: |
|
40
|
|
|
$resTo = self::renderChicago($from, $to); |
|
41
|
|
|
break; |
|
42
|
|
|
case PageRangeFormats::EXPANDED: |
|
43
|
|
|
default: |
|
44
|
|
|
$resTo = $to; |
|
45
|
|
|
} |
|
46
|
|
|
return "$from-$resTo"; |
|
47
|
|
|
} |
|
48
|
|
|
return "$from-$to"; |
|
49
|
|
|
} |
|
50
|
|
|
|
|
51
|
|
|
/** |
|
52
|
|
|
* |
|
53
|
|
|
* @param $from |
|
54
|
|
|
* @param $to |
|
55
|
|
|
* @param int $limit |
|
56
|
|
|
* @return string |
|
57
|
|
|
*/ |
|
58
|
|
|
private static function renderMinimal($from, $to, $limit = 1) |
|
59
|
|
|
{ |
|
60
|
|
|
$resTo = ""; |
|
61
|
|
|
for ($i = strlen($to) - 1; $i >= $limit; --$i) { |
|
62
|
|
|
$digitTo = $to{$i}; |
|
63
|
|
|
$digitFrom = $from{$i}; |
|
64
|
|
|
if ($digitTo !== $digitFrom) { |
|
65
|
|
|
$resTo = $digitTo . $resTo; |
|
66
|
|
|
} |
|
67
|
|
|
} |
|
68
|
|
|
return $resTo; |
|
69
|
|
|
} |
|
70
|
|
|
|
|
71
|
|
|
private static function renderChicago($from, $to) |
|
72
|
|
|
{ |
|
73
|
|
|
if ($from == 100 || $from % 100 === 0) { |
|
74
|
|
|
return $to; |
|
75
|
|
|
} else if ($from < 100) { |
|
76
|
|
|
return $to; |
|
77
|
|
|
} else if ($from % 100 < 10) { |
|
78
|
|
|
return self::renderMinimal($from, $to); //Use changed part only, omitting unneeded zeros |
|
79
|
|
|
} else if (strlen($from) == 4) { |
|
80
|
|
|
if ($from % 1000 != $to % 1000) { |
|
81
|
|
|
return $to; |
|
82
|
|
|
} |
|
83
|
|
|
return self::renderMinimal($from, $to); |
|
84
|
|
|
} else if (strlen($from) != 4 && $from % 100 >= 10 && $from % 100 <= 99) { |
|
85
|
|
|
$resTo = substr($to,-2); |
|
86
|
|
|
$from_ = substr($from, 0, strlen($from) - 2); |
|
87
|
|
|
$to_ = substr($to, 0, strlen($to) - 2); |
|
88
|
|
|
if ($from_ != $to_ && strlen($from_) == strlen($to_)) { |
|
89
|
|
|
for ($i = strlen($from_)-1; $i >= 0 && $to_{$i} != $from_{$i}; --$i) { |
|
90
|
|
|
$resTo = $to{$i} . $resTo; |
|
91
|
|
|
} |
|
92
|
|
|
} |
|
93
|
|
|
return $resTo; |
|
94
|
|
|
} |
|
95
|
|
|
return self::renderMinimal($from, $to, 1); |
|
96
|
|
|
} |
|
97
|
|
|
} |
seboettg /
citeproc-php
