File: create.php

package info (click to toggle)
simplepie 1.2.1-3
  • links: PTS, VCS
  • area: main
  • in suites: jessie, jessie-kfreebsd, wheezy
  • size: 7,020 kB
  • ctags: 4,652
  • sloc: php: 27,500; sql: 32; sh: 4; makefile: 2
file content (173 lines) | stat: -rw-r--r-- 3,832 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
<?php

require_once 'simplepie.class.php';

function normalize_character_set($charset)
{
	return strtolower(preg_replace('/(?:[^a-zA-Z0-9]+|([^0-9])0+)/', '\1', $charset));
}

function build_character_set_list()
{
	$file = new SimplePie_File('http://www.iana.org/assignments/character-sets');
	if (!$file->success && !($file->method & SIMPLEPIE_FILE_SOURCE_REMOTE === 0 || ($file->status_code === 200 || $file->status_code > 206 && $file->status_code < 300)))
	{
		return false;
	}
	else
	{
		$data = explode("\n", $file->body);
		unset($file);
		
		foreach ($data as $line)
		{
			// New character set
			if (preg_match('/^Name:\s+(\S+)/', $line, $match))
			{
				// If we already have one, push it on to the array
				if (isset($aliases))
				{
					foreach ($aliases as &$alias)
					{
						$alias = normalize_character_set($alias);
					}
					$charsets[$preferred] = array_unique($aliases);
					natsort($charsets[$preferred]);
				}
				
				$aliases = array($match[1]);
				$preferred = $match[1];
			}
			// Another alias
			elseif (preg_match('/^Alias:\s+(\S+)(\s+\(preferred MIME name\))?\s*$/', $line, $match))
			{
				if ($match[1] !== 'None')
				{
					$aliases[] = $match[1];
					if ($match[2])
					{
						$preferred = $match[1];
					}
				}
			}
		}
		
		// Compatibility replacements
		// From http://www.whatwg.org/specs/web-apps/current-work/multipage/parsing.html#misinterpreted-for-compatibility
		$compat = array(
			'EUC-KR' => 'windows-949',
			'GB2312' => 'GBK',
			'GB_2312-80' => 'GBK',
			'ISO-8859-1' => 'windows-1252',
			'ISO-8859-9' => 'windows-1254',
			'ISO-8859-11' => 'windows-874',
			'KS_C_5601-1987' => 'windows-949',
			'Shift_JIS' => 'Windows-31J',
			'TIS-620' => 'windows-874',
			//'US-ASCII' => 'windows-1252',
		);
		
		foreach ($compat as $real => $replace)
		{
			if (isset($charsets[$real]) && isset($charsets[$replace]))
			{
				$charsets[$replace] = array_merge($charsets[$replace], $charsets[$real]);
				unset($charsets[$real]);
			}
			elseif (isset($charsets[$real]))
			{
				$charsets[$replace] = $charsets[$real];
				$charsets[$replace][] = normalize_character_set($replace);
				unset($charsets[$real]);
			}
			else
			{
				$charsets[$replace][] = normalize_character_set($real);
			}
			$charsets[$replace] = array_unique($charsets[$replace]);
			natsort($charsets[$replace]);
		}
		
		// Sort it
		uksort($charsets, 'strnatcasecmp');
		
		// Check that nothing matches more than one
		$all = call_user_func_array('array_merge', $charsets);
		$all_count = array_count_values($all);
		if (max($all_count) > 1)
		{
			echo "Duplicated charsets:\n";
			foreach ($all_count as $charset => $count)
			{
				if ($count > 1)
				{
					echo "$charset\n";
				}
			}
		}
		
		// And we're done!
		return $charsets;
	}
}

function charset($charset)
{
	$normalized_charset = normalize_character_set($charset);
	if ($charsets = build_character_set_list())
	{
		foreach ($charsets as $preferred => $aliases)
		{
			if (in_array($normalized_charset, $aliases))
			{
				return $preferred;
			}
		}
		return $charset;
	}
	else
	{
		return false;
	}
}

function build_function()
{
	if ($charsets = build_character_set_list())
	{
		$return = <<<EOF
public static function encoding(\$charset)
{
	// Normalization from UTS #22
	switch (strtolower(preg_replace('/(?:[^a-zA-Z0-9]+|([^0-9])0+)/', '\\1', \$charset)))
	{

EOF;
		foreach ($charsets as $preferred => $aliases)
		{
			foreach ($aliases as $alias)
			{
				$return .= "\t\tcase " . var_export($alias, true) . ":\n";
			}
			$return .= "\t\t\treturn " . var_export($preferred, true) . ";\n\n";
		}
		$return .= <<<EOF
		default:
			return \$charset;
	}
}
EOF;
		return $return;
	}
	else
	{
		return false;
	}
}

if (php_sapi_name() === 'cli' && realpath($_SERVER['argv'][0]) === __FILE__)
{
	echo build_function();
}

?>