一个示范gettext实现L10N的小例子-阿里云开发者社区

一个示范gettext实现L10N的小例子

2017-11-26 1225

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简介：

这是来自《Free/Open Source Software Guide to Localization》里面Chapter10的示例，简单明了，我在RedHat5.3上尝试了一把，终于明白了gettext的使用方法，虽然还很浅显哈哈，但对我来说意义非凡！小弟一直想整个可以随便国际化本地化的程序，不知道如何入手，《Free/Open Source Software Guide to Localization》给了我相当的指导，推荐大家阅读O(∩_∩)O~

废话不说，直接上代码，helloworldintl.c：

#include<libintl.h>

#include<locale.h>

#include<stdio.h>

#define _(String) gettext (String)

#define _t(String1,String2,n) ngettext (String1,String2,n)

int main()

{

int i;

setlocale(LC_ALL,"");

bindtextdomain( "helloworldintl", "/usr/share/locale");

textdomain( "helloworldintl");

printf(_( "again"));

printf( "\n");

printf(_( "Hello World"));

printf( "\n");

printf(_( "These text demonstrate that translation using po files is easier\n"));

scanf( "%d",&i);

printf(_t( "This number %d is of singular form", "This number %d is of plural form",i),i);

printf( "\n");

printf(_( "The magic number is %d\n"),i);

printf(_( "These are additional words"));

printf( "\n");

printf(_( "I love translation\n"));

} //main

Step 1:
执行如下命令提取程序中的字符串：
xgettext -d helloworldintl -o helloworldintl.pot --keyword=_t:1,2 -k_ -s helloworldintl.c
注意-k参数后面有个下划线，表示需要提取以下划线引用gettext函数的相关字符串。我弄了好几次才弄对的！

Step 2:
然后随便用Linux上的支持Unicode的文本编辑器，比如gedit打开helloworldintl.pot，瞧下内容：

# SOME DESCRIPTIVE TITLE.

# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER

# This file is distributed under the same license as the PACKAGE package.

# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.

#, fuzzy

msgid ""

msgstr ""
"Project-Id-Version: Brant I18N Hello World 1.0\n"
"Report-Msgid-Bugs-To: \n"
"POT-Creation-Date: 2009-12-16 17:15+0800\n"
"PO-Revision-Date: 2009-12-16 17:15+0800\n"
"Last-Translator: BrantC <BrantC@xxx.com>\n"
"Language-Team: BrantC <BrantC@xxx.com>\n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"
"Plural-Forms: nplurals=2; plural=n != 11;\n"

#: helloworldintl.c:17

#, c-format

msgid "Hello World"

msgstr ""

#: helloworldintl.c:26

#, c-format

msgid "I love translation\n"

msgstr "\n"

#: helloworldintl.c:23

#, c-format

msgid "The magic number is %d\n"

msgstr " %d\n"

#: helloworldintl.c:24

#, c-format

msgid "These are additional words"

msgstr ""

#: helloworldintl.c:19

#, c-format

msgid "These text demonstrate that translation using po files is easier\n"

msgstr "po\n"

#: helloworldintl.c:21

#, c-format

msgid "This number %d is of singular form"

msgid_plural "This number %d is of plural form"

msgstr[0] " %d "

msgstr[1] " %d "

#: helloworldintl.c:14

#, c-format

msgid "again"

msgstr ""

Step 3:
把这个pot文件copy为po文件，即helloworldintl.po文件，这种po文件时要给LS team的，他们就把字符串翻译更新到po文件中，翻译后的po文件，如下：

# SOME DESCRIPTIVE TITLE.

# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER

# This file is distributed under the same license as the PACKAGE package.

# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.

#, fuzzy

msgid ""

#: helloworldintl.c:17

#, c-format

msgid "Hello World"

msgstr "你好，世界"

#: helloworldintl.c:26

#, c-format

msgid "I love translation\n"

msgstr "我爱翻译\n"

#: helloworldintl.c:23

#, c-format

msgid "The magic number is %d\n"

msgstr "这个神齐的数字是 %d\n"

#: helloworldintl.c:24

#, c-format

msgid "These are additional words"

msgstr "这些是附加的单词"

#: helloworldintl.c:19

#, c-format

msgid "These text demonstrate that translation using po files is easier\n"

msgstr "这些示例文本通过po文件翻译更容易\n"

#: helloworldintl.c:21

#, c-format

msgid "This number %d is of singular form"

msgid_plural "This number %d is of plural form"

msgstr[0] "这个数字 %d 是单数形式"

msgstr[1] "这个数字 %d 是复数形式"

#: helloworldintl.c:14

#, c-format

msgid "again"

msgstr "重试"

Step 4:
然后，执行下面的命令生成mo文件：
msgfmt helloworldintl.po -o helloworldintl.m

Step 5:
然后把mo文件copy到相应的locale目录下面，我这里是/usr/share/locale/zh_CN.GB2312/LC_MESSAGES/.

Step 6:
现在可以算大功告成，执行中文版的helloworldintl：

执行英文版的helloworldintl：

哈哈，完美：）