version 1, including all changes.
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SETLOCALE |
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!!!SETLOCALE |
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NAME |
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SYNOPSIS |
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DESCRIPTION |
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RETURN VALUE |
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CONFORMING TO |
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NOTES |
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SEE ALSO |
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---- |
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!!NAME |
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setlocale - set the current locale. |
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!!SYNOPSIS |
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__#include |
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__ ''category''__, const char *__ ''locale''__); |
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__ |
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!!DESCRIPTION |
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The __setlocale()__ function is used to set or query the |
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program's current locale. |
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If ''locale'' is not __NULL__, the program's current |
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locale is modified according to the arguments. The argument |
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''category'' determines which parts of the program's |
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current locale should be modified. |
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__LC_ALL__ |
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for all of the locale. |
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__LC_COLLATE__ |
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for regular expression matching (it determines the meaning |
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of range expressions and equivalence classes) and string |
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collation. |
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__LC_CTYPE__ |
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for regular expression matching, character classification, |
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conversion, case-sensitive comparison, and wide character |
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functions. |
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__LC_MESSAGES__ |
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for localizable natural-language messages. |
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__LC_MONETARY__ |
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for monetary formatting. |
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__LC_NUMERIC__ |
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for number formatting (such as the decimal point and the |
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thousands separator). |
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__LC_TIME__ |
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for time and date formatting. |
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The argument ''locale'' is a pointer to a character |
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string containing the required setting of ''category''. |
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Such a string is either a well-known constant like |
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''setlocale__. |
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If ''locale'' is ____, each part of the |
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locale that should be modified is set according to the |
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environment variables. The details are implementation |
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dependent. For glibc, first (regardless of ''category''), |
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the environment variable LC_ALL is inspected, next the |
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environment variable with the same name as the category |
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(LC_COLLATE, LC_CTYPE, LC_MESSAGES, LC_MONETARY, LC_NUMERIC, |
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LC_TIME) and finally the environment variable LANG. The |
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first existing environment variable is used. If its value is |
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not a valid locale specification, the locale is unchanged, |
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and __setlocale__ returns NULL. |
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The locale ____ or ____ |
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is a portable locale; its LC_CTYPE part corresponds to the |
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7-bit ASCII character set. |
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A locale name is typically of the form |
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''language''[[_''territory''][[.''codeset''][[@''modifier''], |
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where ''language'' is an ISO 639 language code, |
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''territory'' is an ISO 3166 country code, and |
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''codeset'' is a character set or encoding identifier |
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like __ISO-8859-1__ or __UTF-8__. For a list of all |
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supported locales, try |
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locale(1). |
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If ''locale'' is __NULL__, the current locale is only |
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queried, not modified. |
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On startup of the main program, the portable |
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____ locale is selected as default. A |
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program may be made portable to all locales by calling |
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__setlocale(LC_ALL, __ after program |
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initialization, by using the values returned from a |
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__localeconv()__ call for locale - dependent information, |
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by using the multi-byte and wide character functions for |
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text processing if __MB_CUR_MAX __, and by using |
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__strcoll()__, __wcscoll()__ or __strxfrm()__, |
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__wcsxfrm()__ to compare strings. |
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!!RETURN VALUE |
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A successful call to __setlocale()__ returns an opaque |
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string that corresponds to the locale set. This string may |
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be allocated in static storage. The string returned is such |
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that a subsequent call with that string and its associated |
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category will restore that part of the process's locale. The |
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return value is __NULL__ if the request cannot be |
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honored. |
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!!CONFORMING TO |
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ANSI C, POSIX.1 |
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!!NOTES |
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Linux (that is, GNU libc) supports the portable locales |
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____ and ____. In the |
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good old days there used to be support for the European |
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Latin-1 ____ locale (e.g. in |
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libc-4.5.21 and libc-4.6.27), and the Russian |
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____ (more precisely, |
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__ |
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!!SEE ALSO |
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locale(1), localedef(1), strcoll(3), |
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isalpha(3), localeconv(3), strftime(3), |
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charsets(4), locale(7) |
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---- |