Modhul:StringFunc
Dhokumèntasi modhul iki bisa digawé ing Modhul:StringFunc/doc
local p = {}
--[[
Strip
This function Strips charecters from string
Usage:
{{#invoke:StringFunc|strip|source_string|charecters_to_strip|plain_flag}}
Parameters
source: The string to strip
chars: The pattern or list of charecters 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 '';
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
--[[
Split
This function Splits a string based on a separator, returns nth substring based on count.
Usage:
{{#invoke:StringFunc|split|source_string|separator|count}}
Parameters:
source: The string to return a subset of
separator: The string to split on
count: The nth substring based on the separator to return
]]
function p.split( frame )
local new_args = p._getParameters( frame.args, {'source', 'separator', 'count'} )
local source_str = new_args['source'] or '';
local separator = new_args['separator'] or '';
local separator_len = mw.ustring.len(separator);
if source_str == '' or separator == '' then
return source_str;
end
local ret_count = tonumber( new_args['count'] ) or 1;
if ret_count < 1 then
return "";
end
local start = 1;
local iter = mw.ustring.find(source_str, separator, start, true);
if iter == nil then
if ret_count == 1 then
return source_str;
else
return "";
end
else
iter = iter - 1;
end
if ret_count == 1 then
return mw.ustring.sub( source_str, start, iter);
end
for i=2, ret_count do
start = iter+separator_len + 1;
iter = mw.ustring.find(source_str, separator, start, true);
if iter == nil then
if ret_count == i then
return mw.ustring.sub(source_str, start, mw.ustring.len(source_str));
else
return "";
end
else
iter = iter - 1;
end
end
return mw.ustring.sub( source_str,start,iter);
end
function p.isNumber( frame )
local new_args = p._getParameters( frame.args, {'source'} )
local source_str = new_args['source'] or ''
if source_str == '' then
return "false"
end
if tonumber(source_str) == nil and tonumber(string.gsub(source_str, ",", ".", 1) .. '') == nil then
return "false"
end
return "true"
end
-- Argument list helper function, as per Module:String
function p._getParameters( frame_args, arg_list)
local new_args = {};
local index = 1;
local value;
for i, arg in ipairs( arg_list ) do
value = frame_args[arg]
if value == nil then
value = frame_args[index];
index = index + 1;
end
new_args[arg] = value;
end
return new_args;
end
-- Escape Pattern helper function so that all charecters 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
function p._getBoolean( boolean_str )
local boolean_value;
if type( boolean_str ) == 'string' then
boolean_str = boolean_str:lower();
if boolean_str == 'false' or boolean_str == 'no' or boolean_str == 'O' or boolean_str == '' then
boolean_value = false;
else
boolean_value = true;
end
elseif type(boolean_str) == 'boolean' then
boolean_value = boolean_str;
else
error( 'No boolean value found' );
end
return boolean_value
end
return p