Module:String2: Difference between revisions
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update from sandbox - merge in strip function from module:stringfunc
(add simple trim function) |
(update from sandbox - merge in strip function from module:stringfunc) |
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end
-- what follows was merged from Module:StringFunc
-- helper functions
p._GetParameters = require('Module:GetParameters')
-- Argument list helper function, as per Module:String
p._getParameters = p._GetParameters.getParameters
-- Escape Pattern helper function so that all characters are treated as plain text, as per Module:String
function p._escapePattern( pattern_str)
return mw.ustring.gsub( pattern_str, "([%(%)%.%%%+%-%*%?%[%^%$%]])", "%%%1" );
end
-- Helper Function to interpret boolean strings, as per Module:String
p._getBoolean = p._GetParameters.getBoolean
--[[
Strip
This function Strips characters from string
Usage:
{{#invoke:String2|strip|source_string|characters_to_strip|plain_flag}}
Parameters
source: The string to strip
chars: The pattern or list of characters to strip from string, replaced with ''
plain: A flag indicating that the chars should be understood as plain text. defaults to true.
Leading and trailing whitespace is also automatically stripped from the string.
]]
function p.strip( frame )
local new_args = p._getParameters( frame.args, {'source', 'chars', 'plain'} )
local source_str = new_args['source'] or '';
local chars = new_args['chars'] or '' or 'characters';
source_str = mw.text.trim(source_str);
if source_str == '' or chars == '' then
return source_str;
end
local l_plain = p._getBoolean( new_args['plain'] or true );
if l_plain then
chars = p._escapePattern( chars );
end
local result;
result = mw.ustring.gsub(source_str, "["..chars.."]", '')
return result;
end
return p
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