Commit | Line | Data |
---|---|---|
6855525e JL |
1 | <?php |
2 | ||
3 | /** | |
4 | * | |
5 | * "Pre-filter" the source text. | |
6 | * | |
7 | * @category Text | |
8 | * | |
9 | * @package Text_Wiki | |
10 | * | |
11 | * @author Paul M. Jones <pmjones@php.net> | |
12 | * | |
13 | * @license LGPL | |
14 | * | |
15 | * @version $Id: Prefilter.php,v 1.3 2005/02/23 17:38:29 pmjones Exp $ | |
16 | * | |
17 | */ | |
18 | ||
19 | /** | |
20 | * | |
21 | * "Pre-filter" the source text. | |
22 | * | |
23 | * Convert DOS and Mac line endings to Unix, concat lines ending in a | |
24 | * backslash \ with the next line, convert tabs to 4-spaces, add newlines | |
25 | * to the top and end of the source text, compress 3 or more newlines to | |
26 | * 2 newlines. | |
27 | * | |
28 | * @category Text | |
29 | * | |
30 | * @package Text_Wiki | |
31 | * | |
32 | * @author Paul M. Jones <pmjones@php.net> | |
33 | * | |
34 | */ | |
35 | ||
36 | class Text_Wiki_Parse_Prefilter extends Text_Wiki_Parse { | |
37 | ||
38 | ||
39 | /** | |
40 | * | |
41 | * Simple parsing method. | |
42 | * | |
43 | * @access public | |
44 | * | |
45 | */ | |
46 | ||
47 | function parse() | |
48 | { | |
49 | // convert DOS line endings | |
50 | $this->wiki->source = str_replace("\r\n", "\n", | |
51 | $this->wiki->source); | |
52 | ||
53 | // convert Macintosh line endings | |
54 | $this->wiki->source = str_replace("\r", "\n", | |
55 | $this->wiki->source); | |
56 | ||
57 | // concat lines ending in a backslash | |
58 | $this->wiki->source = str_replace("\\\n", "", | |
59 | $this->wiki->source); | |
60 | ||
61 | // convert tabs to four-spaces | |
62 | $this->wiki->source = str_replace("\t", " ", | |
63 | $this->wiki->source); | |
64 | ||
65 | // add extra newlines at the top and end; this | |
66 | // seems to help many rules. | |
67 | $this->wiki->source = "\n" . $this->wiki->source . "\n\n"; | |
68 | ||
69 | // finally, compress all instances of 3 or more newlines | |
70 | // down to two newlines. | |
71 | $find = "/\n{3,}/m"; | |
72 | $replace = "\n\n"; | |
73 | $this->wiki->source = preg_replace($find, $replace, | |
74 | $this->wiki->source); | |
75 | } | |
76 | ||
77 | } | |
78 | ?> |