-- Module for different search and replace operations on strings.
local p = {}
-- Takes one string parameter, and returns the string with all characters with special meaning for Lua patterns escaped with a preceding `%`.
function p.escape_pattern(text)
-- Replaces each occurrence of any of ().%+-*?[^$ with a `%` and then the character.
local r = string.gsub(text, "[%(%)%.%%%+%-%*%?%[%^%$]", "%%%1")
return r
end
-- Returns the first parameter, with all occurrences of the second parameter replaced with the third parameter.
-- All special characters are ignored: {{#invoke:StringReplace|replace_all|test.a%1$foo|%1|bar}} results in `test.abarfoo`.
function p.replace_all(frame)
local str = frame.args[1]
local strToFind = frame.args[2]
local strToreplaceWith = frame.args[3]
local r = string.gsub(str, p.escape_pattern(strToFind), p.escape_pattern(strToreplaceWith))
return r
end
p['encode wiki page name'] = function( frame )
local x = mw.ustring.gsub(
frame.args[1] or '',
'[\'"&_]',
{
["'"] = ''',
['"'] = '"',
['&'] = '&',
['_'] = ' ',
}
)
return mw.text.trim( x )
end
return p
