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luagsublua-patterns

gsub a text with code

In Lua I have the following text and want for format it:

Incoming:

<UNIT STYLE="BOLD">Example</UNIT>
<UNIT STYLE="HANDLE">Example 2</UNIT>
<UNIT STYLE="THR">Example 3</UNIT>

Expected result:

<BOLD>Example</BOLD>
<UNIT STYLE="HANDLE">Example 2</UNIT>
<UNIT STYLE="THR">Example 3</UNIT>

The values can be different (e.g. Example, This is a Text...). How to this? Do I have to use gsub with a pattern?

Solution

  • Yes, gsub is the way to go:

    s=[[
<UNIT STYLE="BOLD">Example</UNIT>
<UNIT STYLE="HANDLE">Example 2</UNIT>
<UNIT STYLE="THR">Example 3</UNIT>
]]

print(s:gsub('<UNIT STYLE="BOLD">(.-)</UNIT>','<BOLD>%1</BOLD>'))

    Try also this:

    print(s:gsub('<UNIT STYLE="(.-)">(.-)</UNIT>','<%1>%2<%1>'))