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| <h5 class="subsubsection">8.2.1.4 How to specify the output character set <code>gettext</code> uses</h5> |
| |
| <p><code>gettext</code> not only looks up a translation in a message catalog. It |
| also converts the translation on the fly to the desired output character |
| set. This is useful if the user is working in a different character set |
| than the translator who created the message catalog, because it avoids |
| distributing variants of message catalogs which differ only in the |
| character set. |
| |
| <p>The output character set is, by default, the value of <code>nl_langinfo |
| (CODESET)</code>, which depends on the <code>LC_CTYPE</code> part of the current |
| locale. But programs which store strings in a locale independent way |
| (e.g. UTF-8) can request that <code>gettext</code> and related functions |
| return the translations in that encoding, by use of the |
| <code>bind_textdomain_codeset</code> function. |
| |
| <p>Note that the <var>msgid</var> argument to <code>gettext</code> is not subject to |
| character set conversion. Also, when <code>gettext</code> does not find a |
| translation for <var>msgid</var>, it returns <var>msgid</var> unchanged – |
| independently of the current output character set. It is therefore |
| recommended that all <var>msgid</var>s be US-ASCII strings. |
| |
| <!-- libintl.h --> |
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| — Function: char * <b>bind_textdomain_codeset</b> (<var>const char *domainname, const char *codeset</var>)<var><a name="index-bind_005ftextdomain_005fcodeset-816"></a></var><br> |
| <blockquote><p>The <code>bind_textdomain_codeset</code> function can be used to specify the |
| output character set for message catalogs for domain <var>domainname</var>. |
| The <var>codeset</var> argument must be a valid codeset name which can be used |
| for the <code>iconv_open</code> function, or a null pointer. |
| |
| <p>If the <var>codeset</var> parameter is the null pointer, |
| <code>bind_textdomain_codeset</code> returns the currently selected codeset |
| for the domain with the name <var>domainname</var>. It returns <code>NULL</code> if |
| no codeset has yet been selected. |
| |
| <p>The <code>bind_textdomain_codeset</code> function can be used several times. |
| If used multiple times with the same <var>domainname</var> argument, the |
| later call overrides the settings made by the earlier one. |
| |
| <p>The <code>bind_textdomain_codeset</code> function returns a pointer to a |
| string containing the name of the selected codeset. The string is |
| allocated internally in the function and must not be changed by the |
| user. If the system went out of core during the execution of |
| <code>bind_textdomain_codeset</code>, the return value is <code>NULL</code> and the |
| global variable <var>errno</var> is set accordingly. </p></blockquote></div> |
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