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582a65b06f
Implement full case mapping according to SpecialCasing.txt and also full case folding according to CaseFolding.txt (F). There are a number of caveats: * Only language-agnostic and unconditional full case mapping is implemented. The only language-agnostic conditional case mapping rule relates to Greek sigma in final position (Final_Sigma). Correctly handling this requires both arbitrary lookahead and lookbehind, which would require some larger changes to how the case mapping is implemented. This is a possible future extension. * The only language-specific handling that is implemented is for Turkish dotted/undotted Is, if the ISO-8859-9 encoding is used. This matches the previous behavior and makes sure that no codepoints not supported by the encoding are produced. A future extension would be to also handle the Turkish mappings specified by SpecialCasing.txt based on the mbfl internal language. * Full case folding is implemented, but case-insensitive mb_* operations continue to use simple case folding. The reason is that full case folding of the haystack string may change the position at which a match occurred. This would have to be mapped back into the position in the original string. * mb_convert_case() exposes both the full and the simple case mapping / folding, where full is the default. The constants are: * MB_CASE_LOWER (used by mb_strtolower) * MB_CASE_UPPER (used by mb_strtolower) * MB_CASE_TITLE * MB_CASE_FOLD * MB_CASE_LOWER_SIMPLE * MB_CASE_UPPER_SIMPLE * MB_CASE_TITLE_SIMPLE * MB_CASE_FOLD_SIMPLE (used by case-insensitive operations)
45 lines
1.0 KiB
PHP
45 lines
1.0 KiB
PHP
--TEST--
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Bug #69267: mb_strtolower fails on titlecase characters
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--FILE--
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<?php
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$str_l = "džljnjdz";
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$str_u = "DŽLJNJDZ";
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$str_t = "DžLjNjDz";
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var_dump(mb_strtolower($str_l));
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var_dump(mb_strtolower($str_u));
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var_dump(mb_strtolower($str_t));
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var_dump(mb_strtoupper($str_l));
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var_dump(mb_strtoupper($str_u));
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var_dump(mb_strtoupper($str_t));
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var_dump(mb_convert_case($str_l, MB_CASE_TITLE));
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var_dump(mb_convert_case($str_u, MB_CASE_TITLE));
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var_dump(mb_convert_case($str_t, MB_CASE_TITLE));
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$str_l = "ᾳ";
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$str_t = "ᾼ";
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var_dump(mb_strtolower($str_l));
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var_dump(mb_strtolower($str_t));
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var_dump(mb_strtoupper($str_l));
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var_dump(mb_strtoupper($str_t));
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var_dump(mb_convert_case($str_l, MB_CASE_TITLE));
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var_dump(mb_convert_case($str_t, MB_CASE_TITLE));
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?>
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--EXPECT--
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string(8) "džljnjdz"
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string(8) "džljnjdz"
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string(8) "džljnjdz"
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string(8) "DŽLJNJDZ"
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string(8) "DŽLJNJDZ"
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string(8) "DŽLJNJDZ"
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string(8) "Džljnjdz"
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string(8) "Džljnjdz"
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string(8) "Džljnjdz"
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string(3) "ᾳ"
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string(3) "ᾳ"
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string(4) "ΑΙ"
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string(4) "ΑΙ"
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string(3) "ᾼ"
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string(3) "ᾼ"
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