Difference between revisions of "Module:Ustring"

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(to consolidate common function to Module:LuaCall, for ease to maintain bug fix and improvement. Some bug fixes and improvements has been done there but not yet here. One of common functions like tostringOrNumber() will also be shared there. This is not proxying, but to share common code with other modules.)
m (20 revisions imported)
 
(5 intermediate revisions by 2 users not shown)
Line 1: Line 1:
local p = require("Module:LuaCall").import(mw.ustring)
+
require('Module:No globals')
 
+
return setmetatable({}, {
for k, v in pairs(p) do
+
__index = function(t, k)
p[k] = function(frame)
+
local what = mw.ustring[k]
local args = frame.args
+
if type(what) ~= "function" then
--for _, v in ipairs(args) do
+
return what
-- args[_] = tonumber(v) or v:gsub("^\\", "", 1)
+
end
--end
+
return function(frame)
if args.tag then
+
local args = frame.args
local tag = {name = args.tag, content = v(frame), args = {}}
+
for _, v in ipairs(args) do
 +
args[_] = tonumber(v) or v:gsub("^\\", "", 1)
 +
end
 +
if not args.tag then
 +
return (what(unpack(args)))
 +
end
 +
local tagargs = {}
 
for x, y in pairs(args) do
 
for x, y in pairs(args) do
if type(x)~='number' and x~='tag' then tag.args[x] = y end
+
if type(x) ~= 'number' and x ~= 'tag' then tagargs[x] = y end
 
end
 
end
return frame:extensionTag(tag)
+
return frame:extensionTag{name = args.tag, content = what(unpack(args)), args = tagargs}
 
end
 
end
return (v(frame))
 
 
end
 
end
end
+
})
 
 
return p
 

Latest revision as of 05:05, 30 September 2020

This module directly imports all functions from the

  1. redirect Template:Scribunto library. Documentation for each function can be found there.

The module takes an indefinite number of arguments. All arguments are coerced as number type if possible. If you wish for something to remain a string, you can simply escape it by insert \ at the beginning of the string.

You can also wrap results in tags. All non-number indexed arguments will be passed to

  1. redirect Template:Scribunto

Usage

{{#invoke:Ustring|function_name|arg1|arg2|...}} is equivalent to

  1. redirect Template:Scribunto

Example using mw.ustring.sub

{{#invoke:Ustring|sub|abcde|2|4}}

produces:

bcd

Example using mw.ustring.gsub

{{#invoke:Ustring|gsub|1234|23|}}

produces:

14

Example using mw.ustring.char

&#{{#invoke:ustring|char|49|48|59}}

produces:




This is nice for escaping character sequences in other modules; for example:

p = {}
function p.main(frame)
  local str = '1-2-2{{#invoke:ustring|char|45}}1-3'
  return frame:preprocess(str:gsub('-', '/'))-- == '1/2/2-1/3'
end
return p

Example using mw.ustring.match

{{#invoke:Ustring|match|abcde|(c%w)}}

produces:

cd

Note: Only the first match is returned. Additional returns are omitted because mw.ustring.gsub's second return value is generally undesirable.

Example using tag arguments

{{#invoke:Ustring|match
|{{Module:Ustring}}|%s%s%sif%snot%s[^%s]+%sthen.+%
<!--enter an actual newline character to match '\n'-->%s%s%send
|tag=syntaxhighlight|lang=lua}}

produces:

			if not args.tag then
				return (what(unpack(args)))
			end
			local tagargs = {}
			for x, y in pairs(args) do
				if type(x) ~= 'number' and x ~= 'tag' then tagargs[x] = y end
			end

Note that:

<syntaxhighlight lang="lua">{{#invoke:Ustring|match
|{{Module:Ustring}}|%s%s%sif%snot%s[^%s]+%sthen.+%
<!--enter an actual newline character to match '\n'-->%s%s%send}}</syntaxhighlight>

produces:

{{#invoke:Ustring|match
|{{Module:Ustring}}|%s%s%sif%snot%s[^%s]+%sthen.+%
<!--enter an actual newline character to match '\n'-->%s%s%send}}

Errors

Errors from accessing

  1. redirect Template:Scribunto should be maintained, e.g.:

{{#invoke:Ustring|xyzzy}}

should produce:

Template:Script error

and

{{#invoke:Ustring|maxPatternLength}}

should produce:

Template:Script error

See also


require('Module:No globals')
return setmetatable({}, {
	__index = function(t, k)
		local what = mw.ustring[k]
		if type(what) ~= "function" then
			return what
		end
		return function(frame)
			local args = frame.args
			for _, v in ipairs(args) do
				args[_] = tonumber(v) or v:gsub("^\\", "", 1)
			end
			if not args.tag then
				return (what(unpack(args)))
			end
			local tagargs = {}
			for x, y in pairs(args) do
				if type(x) ~= 'number' and x ~= 'tag' then tagargs[x] = y end
			end
			return frame:extensionTag{name = args.tag, content = what(unpack(args)), args = tagargs}
		end
	end
})