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Serendipity
4fe7dc47e4
- 新增国际化系统，支持中英文切换 - 添加语言选择对话框和语言切换按钮回调 - 扩展配置系统以支持语言设置存储 - 创建语言文件目录结构和占位文件 - 更新主窗口支持UI文本动态刷新
183 lines
6.2 KiB
HTML
183 lines
6.2 KiB
HTML
<!-- Creator : groff version 1.22.3 -->
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
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"http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<head>
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<meta name="generator" content="groff -Thtml, see www.gnu.org">
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<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
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<meta name="Content-Style" content="text/css">
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<style type="text/css">
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p { margin-top: 0; margin-bottom: 0; vertical-align: top }
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pre { margin-top: 0; margin-bottom: 0; vertical-align: top }
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table { margin-top: 0; margin-bottom: 0; vertical-align: top }
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h1 { text-align: center }
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</style>
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<title>GETTEXT</title>
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</head>
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<body>
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<h1 align="center">GETTEXT</h1>
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<a href="#NAME">NAME</a><br>
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<a href="#SYNOPSIS">SYNOPSIS</a><br>
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<a href="#DESCRIPTION">DESCRIPTION</a><br>
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<a href="#RETURN VALUE">RETURN VALUE</a><br>
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<a href="#ERRORS">ERRORS</a><br>
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<a href="#BUGS">BUGS</a><br>
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<a href="#SEE ALSO">SEE ALSO</a><br>
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<hr>
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<h2>NAME
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<a name="NAME"></a>
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</h2>
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<p style="margin-left:11%; margin-top: 1em">gettext,
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dgettext, dcgettext - translate message</p>
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<h2>SYNOPSIS
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<a name="SYNOPSIS"></a>
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</h2>
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<p style="margin-left:11%; margin-top: 1em"><b>#include
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<libintl.h></b></p>
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<p style="margin-left:11%; margin-top: 1em"><b>char *
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gettext (const char *</b> <i>msgid</i><b>); <br>
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char * dgettext (const char *</b> <i>domainname</i><b>,
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const char *</b> <i>msgid</i><b>); <br>
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char * dcgettext (const char *</b> <i>domainname</i><b>,
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const char *</b> <i>msgid</i><b>, <br>
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int</b> <i>category</i><b>);</b></p>
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<h2>DESCRIPTION
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<a name="DESCRIPTION"></a>
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</h2>
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<p style="margin-left:11%; margin-top: 1em">The
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<b>gettext</b>, <b>dgettext</b> and <b>dcgettext</b>
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functions attempt to translate a text string into the
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user’s native language, by looking up the translation
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in a message catalog.</p>
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<p style="margin-left:11%; margin-top: 1em">The
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<i>msgid</i> argument identifies the message to be
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translated. By convention, it is the English version of the
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message, with non-ASCII characters replaced by ASCII
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approximations. This choice allows the translators to work
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with message catalogs, called PO files, that contain both
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the English and the translated versions of each message, and
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can be installed using the <b>msgfmt</b> utility.</p>
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<p style="margin-left:11%; margin-top: 1em">A message
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domain is a set of translatable <i>msgid</i> messages.
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Usually, every software package has its own message domain.
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The domain name is used to determine the message catalog
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where the translation is looked up; it must be a non-empty
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string. For the <b>gettext</b> function, it is specified
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through a preceding <b>textdomain</b> call. For the
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<b>dgettext</b> and <b>dcgettext</b> functions, it is passed
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as the <i>domainname</i> argument; if this argument is NULL,
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the domain name specified through a preceding
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<b>textdomain</b> call is used instead.</p>
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<p style="margin-left:11%; margin-top: 1em">Translation
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lookup operates in the context of the current locale. For
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the <b>gettext</b> and <b>dgettext</b> functions, the
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<b>LC_MESSAGES</b> locale facet is used. It is determined by
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a preceding call to the <b>setlocale</b> function.
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<b>setlocale (LC_ALL, "")</b> initializes the
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<b>LC_MESSAGES</b> locale based on the first nonempty value
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of the three environment variables <b>LC_ALL</b>,
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<b>LC_MESSAGES</b>, <b>LANG</b>; see <b>setlocale</b>(3).
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For the <b>dcgettext</b> function, the locale facet is
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determined by the <i>category</i> argument, which should be
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one of the <b>LC_xxx</b> constants defined in the
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<locale.h> header, excluding <b>LC_ALL</b>. In both
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cases, the functions also use the <b>LC_CTYPE</b> locale
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facet in order to convert the translated message from the
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translator’s codeset to the current locale’s
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codeset, unless overridden by a prior call to the
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<b>bind_textdomain_codeset</b> function.</p>
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<p style="margin-left:11%; margin-top: 1em">The message
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catalog used by the functions is at the pathname
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<i>dirname</i>/<i>locale</i>/<i>category</i>/<i>domainname</i>.mo.
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Here <i>dirname</i> is the directory specified through
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<b>bindtextdomain</b>. Its default is system and
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configuration dependent; typically it is
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<i>prefix</i>/share/locale, where <i>prefix</i> is the
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installation prefix of the package. <i>locale</i> is the
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name of the current locale facet; the GNU implementation
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also tries generalizations, such as the language name
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without the territory name. <i>category</i> is
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<b>LC_MESSAGES</b> for the <b>gettext</b> and
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<b>dgettext</b> functions, or the argument passed to the
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<b>dcgettext</b> function.</p>
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<p style="margin-left:11%; margin-top: 1em">If the
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<b>LANGUAGE</b> environment variable is set to a nonempty
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value, and the locale is not the "C" locale, the
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value of <b>LANGUAGE</b> is assumed to contain a colon
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separated list of locale names. The functions will attempt
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to look up a translation of <i>msgid</i> in each of the
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locales in turn. This is a GNU extension.</p>
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<p style="margin-left:11%; margin-top: 1em">In the
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"C" locale, or if none of the used catalogs
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contain a translation for <i>msgid</i>, the <b>gettext</b>,
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<b>dgettext</b> and <b>dcgettext</b> functions return
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<i>msgid</i>.</p>
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<h2>RETURN VALUE
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<a name="RETURN VALUE"></a>
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</h2>
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<p style="margin-left:11%; margin-top: 1em">If a
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translation was found in one of the specified catalogs, it
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is converted to the locale’s codeset and returned. The
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resulting string is statically allocated and must not be
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modified or freed. Otherwise <i>msgid</i> is returned.</p>
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<h2>ERRORS
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<a name="ERRORS"></a>
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</h2>
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<p style="margin-left:11%; margin-top: 1em"><b>errno</b> is
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not modified.</p>
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<h2>BUGS
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<a name="BUGS"></a>
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</h2>
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<p style="margin-left:11%; margin-top: 1em">The return type
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ought to be <b>const char *</b>, but is <b>char *</b> to
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avoid warnings in C code predating ANSI C.</p>
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<p style="margin-left:11%; margin-top: 1em">When an empty
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string is used for <i>msgid</i>, the functions may return a
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nonempty string.</p>
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<h2>SEE ALSO
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<a name="SEE ALSO"></a>
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</h2>
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<p style="margin-left:11%; margin-top: 1em"><b>ngettext</b>(3),
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<b>dngettext</b>(3), <b>dcngettext</b>(3),
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<b>setlocale</b>(3), <b>textdomain</b>(3),
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<b>bindtextdomain</b>(3), <b>bind_textdomain_codeset</b>(3),
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<b>msgfmt</b>(1)</p>
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<hr>
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</body>
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</html>
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