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1 | <? |
2 | |
3 | /** |
4 | ** i18n.php |
5 | ** |
6 | ** This file contains variuos functions that are needed to do |
7 | ** internationalization of SquirrelMail. |
8 | ** |
9 | ** Internally iso-8859-1 is used as character set. Other characters |
10 | ** are encoded using Unicode entities according to HTML 4.0. |
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11 | ** |
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12 | **/ |
13 | |
14 | $i18n_php = true; |
15 | |
16 | // Decodes a string to the internal encoding from the given charset |
17 | function charset_decode ($charset, $string) { |
18 | // All HTML special characters are 7 bit and can be replaced first |
19 | $string = htmlspecialchars ($string); |
20 | |
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21 | $charset = strtolower($charset); |
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22 | |
23 | if (ereg("iso-8859-(.*)", $charset, $res)) { |
24 | if ($res[1] == "1") |
25 | return charset_decode_iso_8859_1 ($string); |
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26 | if ($res[1] == "7") |
27 | return charset_decode_iso_8859_7 ($string); |
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28 | else if ($res[1] == "15") |
29 | return charset_decode_iso_8859_15 ($string); |
30 | else |
31 | return charset_decode_iso_8859_default ($string); |
32 | } else if ($charset == "ns_4551-1") { |
33 | return charset_decode_ns_4551_1 ($string); |
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34 | } else |
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35 | return $string; |
36 | } |
37 | |
38 | // iso-8859-1 is the same as Latin 1 and is normally used |
39 | // in western europe. |
40 | function charset_decode_iso_8859_1 ($string) { |
41 | // This is only debug code as long as the internal |
42 | // character set is iso-8859-1 |
43 | |
44 | // Latin small letter o with stroke |
45 | while (ereg("\370", $string)) |
46 | $string = ereg_replace ("\370", "ø", $string); |
47 | |
48 | return ($string); |
49 | } |
50 | |
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51 | // iso-8859-1 is Greek. |
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52 | function charset_decode_iso_8859_7 ($string) { |
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53 | // Could not find Unicode equivalent of 0xA1 and 0xA2 |
54 | // 0xA4, 0xA5, 0xAA, 0xAE, 0xD2 and 0xFF should not be used |
55 | $string = strtr($string, "\241\242\244\245\252\256\322\377", |
56 | "????????"); |
57 | |
58 | // Horizontal bar (parentheki pavla) |
59 | while (ereg("\257", $string)) |
60 | $string = ereg_replace ("\257", "―", $string); |
61 | |
62 | // ISO-8859-7 characters from 11/04 (0xB4) to 11/06 (0xB6) |
63 | // These are Unicode 900-902 |
64 | while (ereg("([\264-\266])", $string, $res)) { |
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65 | $replace = "&#." . ord($res[1])+720 . ";"; |
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66 | ereg_repleace("[\264-\266]", $replace, $string); |
67 | } |
68 | |
69 | // 11/07 (0xB7) Middle dot is the same in iso-8859-1 |
70 | |
71 | // ISO-8859-7 characters from 11/08 (0xB8) to 11/10 (0xBA) |
72 | // These are Unicode 900-902 |
73 | while (ereg("([\270-\272])", $string, $res)) { |
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74 | $replace = "&#." . ord($res[1])+720 . ";"; |
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75 | ereg_repleace("[\270-\272]", $replace, $string); |
76 | } |
77 | |
78 | // 11/11 (0xBB) Right angle quotation mark is the same as in |
79 | // iso-8859-1 |
80 | |
81 | // And now the rest of the charset |
82 | while (ereg("([\273-\376])", $string, $res)) { |
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83 | $replace = "&#." . ord($res[1])+720 . ";"; |
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84 | ereg_repleace("[\273-\376]", $replace, $string); |
85 | } |
86 | |
87 | return $string; |
88 | } |
89 | |
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90 | // iso-8859-15 is Latin 15 and has very much the same use as Latin 1 |
91 | // but has the Euro symbol and some characters needed for French. |
92 | function charset_decode_iso_8859_15 ($string) { |
93 | // Euro sign |
94 | while (ereg("\244", $replace)) |
95 | $string = ereg_replace ("\244", "€", $string); |
96 | // Latin capital letter S with caron |
97 | while (ereg("\246", $string)) |
98 | $string = ereg_replace ("\244", "Š", $string); |
99 | // Latin small letter s with caron |
100 | while (ereg("\250", $string)) |
101 | $string = ereg_replace ("\250", "š", $string); |
102 | // Latin capital letter Z with caron |
103 | while (ereg("\264", $string)) |
104 | $string = ereg_replace ("\264", "Ž", $string); |
105 | // Latin small letter z with caron |
106 | while (ereg("\270", $string)) |
107 | $string = ereg_replace ("\270", "ž", $string); |
108 | // Latin capital ligature OE |
109 | while (ereg("\274", $string)) |
110 | $string = ereg_replace ("\274", "Œ", $string); |
111 | // Latin small ligature oe |
112 | while (ereg("\275", $string)) |
113 | $string = ereg_replace ("\275", "œ", $string); |
114 | // Latin capital letter Y with diaeresis |
115 | while (ereg("\276", $string)) |
116 | $string = ereg_replace ("\276", "Ÿ", $string); |
117 | |
118 | return ($string); |
119 | } |
120 | |
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121 | // Remove all 8 bit characters from all other ISO-8859 character sets |
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122 | function charset_decode_iso_8859_default ($string) { |
123 | return (strtr($string, "\240\241\242\243\244\245\246\247". |
124 | "\250\251\252\253\254\255\256\257". |
125 | "\260\261\262\263\264\265\266\267". |
126 | "\270\271\272\273\274\275\276\277". |
127 | "\300\301\302\303\304\305\306\307". |
128 | "\310\311\312\313\314\315\316\317". |
129 | "\320\321\322\323\324\325\326\327". |
130 | "\330\331\332\333\334\335\336\337". |
131 | "\340\341\342\343\344\345\346\347". |
132 | "\350\351\352\353\354\355\356\357". |
133 | "\360\361\362\363\364\365\366\367". |
134 | "\370\371\372\373\374\375\376\377", |
135 | "????????????????????????????????????????". |
136 | "????????????????????????????????????????". |
137 | "????????????????????????????????????????". |
138 | "????????")); |
139 | |
140 | } |
141 | |
142 | // This is the same as ISO-646-NO and is used by some |
143 | // Microsoft programs when sending Norwegian characters |
144 | function charset_decode_ns_4551_1 ($string) { |
145 | // These characters are: |
146 | // Latin capital letter AE |
147 | // Latin capital letter O with stroke |
148 | // Latin capital letter A with ring above |
149 | // and the same as small letters |
150 |