Lua/Corona字符串文字 [英] Lua / Corona String Text

问题描述

用几个变量填充文本的命令是什么.

what would be the command to fill a text with a few variables.

ex>天:％1是第％3周中的第％2天"

ex> "Day: %1 is the %2th day in the %3th week"

其中％1可能是5，％2可能是10，％3 12

where %1 could be 5 , %2 could be 10 and %3 12

在另一文本中，可能是: 例如，在％3周中，第％2天是您的一天:％1"

in another text it could be: ex> "in the %3 week the %2th day is your Day: %1"

在％1始终获得变量1，％2变量2和％3变量3

while always the %1 get variable 1, %2 variable 2 and %3 variable 3

我希望我可以理解它:)

i hope i made it understandable :)

关于我的语言文件和语法，变量有时会位于不同的位置 位置.

its about my Language File and about grammer the variables would sit sometimes at different possitions.

谢谢 克里斯

推荐答案

Lua内置的用一些变量填充文本"功能是

Lua's built-in "fill a text with a few variables" function is string.format, which works like C's printf family of functions.

您可以编写一个使用gsub查找%n的所有实例，抓住n的实例，然后按位置查找您的参数之一，从而按照自己的方式工作:

You can write one that works they way you want by using gsub to find all instances of %n, grab the n and use that to look up one of your arguments by position:

function format(fmt, ...)
    local args = {...}
    return (fmt:gsub('%%(%d)', function(i) return args[tonumber(i)] end))
end

现在，您可以让占位符按位置引用自变量:

Now you can have your place holders refer to arguments by position:

format("Day: %1 is the %2th day in the %3th week", day, weekday, week)     --> Day: 22 is the 2th day in the 3th week    
format("in the %3 week the %2th day is your Day: %1", day, weekday, week)  --> in the 3 week the 2th day is your Day: 22 
format("%1 %2 %3 %2 %1", day, weekday, week)                               --> 22 2 3 2 22                               

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