将语言环境设置为系统默认 UTF-8 [英] Set locale to system default UTF-8

问题描述

在 rApache 中运行 R 时，区域设置继承自 Apache 网络服务器，因此 Sys.getlocale() 始终等于 "C".我希望我的网络应用程序使用 UTF8，所以我使用:

When running R inside rApache, the locale is inherited from the Apache webserver, and therefore Sys.getlocale() is always equal to "C". I would like my web application to use UTF8, so I use:

Sys.setlocale("LC_ALL", 'en_US.UTF-8')

但是，这在没有此语言环境可用的机器上不起作用:

However this doesn't work on machines that do not have this locale available:

1: Setting LC_CTYPE failed, using "C" 
2: Setting LC_COLLATE failed, using "C" 
3: Setting LC_TIME failed, using "C" 
4: Setting LC_MESSAGES failed, using "C" 
5: Setting LC_MONETARY failed, using "C"

有什么办法可以使用Sys.setlocale 将locale 设置为系统默认的UTF-8?IE.也可以在 Windows 或德国 Linux 上运行的东西?

Is there any way to use Sys.setlocale to set the locale to the system default UTF-8? I.e. something that would also work on Windows or a German Linux?

推荐答案

回答我自己的问题:在 Ubuntu 上，默认的 LANG 定义在 /etc/default/locale:

Answering my own question: On Ubuntu the default LANG is defined in /etc/default/locale:

jeroen@dev:~⟫ cat /etc/default/locale
# Created by cloud-init v. 0.7.7 on Wed, 29 Jun 2016 11:02:51 +0000
LANG="en_US.UTF-8"

所以在 R 中我们可以这样做:

So in R we could do something like:

readRenviron("/etc/default/locale")
LANG <- Sys.getenv("LANG")
if(nchar(LANG))
   Sys.setlocale("LC_ALL", LANG)

Apache 在 /etc/apache2/envvars 中也有一行可以取消注释以启用此功能.

Apache also has a line in /etc/apache2/envvars that can be uncommented to enable this.

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