Wikipedia:Lua/Modul/Sort/en

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Sort – module with auxilary functions to create sortable keys.

Functions for templates

• The sort functions (Tlatin left only) evaluate the first parameter as term to be sorted.
  • If there is no first parameter provided by #invoke the first parameter of surrounding template transclusion will be used.
• Optional parameters of #invoke specify input and result format and further capabilities.

Return value is always the sort key.

Tlatin

Alphanumeric terms in latin based scripts are reduced to basic characters of ASCII set.

Optional parameters

v

Variant

Default: ISO (simplify all diacritic characters; ligatures of two letters)

• DIN5007m2 (DIN 5007 Variante 2)

• Various typografic codes for spaces, horizontal dashes and invisible characters are reduced to ASCII.
• Multiple whitespace is reduced to single space.

Casing (upcased/downcased) will remain; that can be eliminated easily from result.

textOrder

The value is 1 if the first string is lexical less than second string else empty.

Mandatory parameters, leading whitespace is significant

1

first string

2

second string

failsafe

Version management

The Failsafe interface is heading for version management of globally distributed Lua modules. It enables modules equipped with this interface to

• ensure, that a library module required by a template or another module available as local copy does support certain functionality, or complain if not.
• administrate global updating and linking of module codes via Wikidata.

The Failsafe interface is present both at template level and for direct Lua access.

The functions in detail are (not all supported yet completely by every library):

Parameter

Value	Result	current
nothing false	local version ID	»2024-01-01«
Minimal version	version ID required at least date in ISO format It will be compared whether the current local implementation matches this version or later. empty, if minimal version not achieved	2001-01-01 → »2024-01-01« 2099-01-01 → »«
wikidata	version ID of global upstream version ID at Wikidata local, if not found there	»2024-01-01«
item	ID of the Wikidata item empty if not defined Q24205172
~	Corresponding version ID locally and registered at Wikidata empty, if up to date version ID at Wikidata, if not equal	»«
@	Is the current (module) page linked correctly with Wikidata item? empty, if linked to the item which is supposed Iitem ID, if not	»Q24205172«
The return value is in template programming empty or under Lua false, otherwis a non-empty string as described.

Examples (test page)

A test page illustrates results on input formats.

Date and time

That is implemented by the module DateTime.

Functions for Lua modules (API)

All functions described above can be used by other modules:

local lucky, Sort = pcall( require, "Module:Sort" )
if type( Sort ) == "table" then
    Sort = Sort()
else
    -- In the event of errors, Sort is an error message.
    return "<span class='error'>" .. Sort .. "</span>"
end

Sort.lex( adjust, apply, adapt )

Similar to Tlatin.

adjust

term (string)

mandatory

apply

base script (string)

• "latin"
• "cyrillic"
• "greek"
• "uni"

currently latin available only

adapt

variant (string, optional)

• "DIN5007m2"

Sort.failsafe( atleast )

Versioning interface similar to failsafe

atleast

optional

nil or minimum version or wikidata or ~ for synchronisation

returns: Version ID as string or false

Until 2023 Sort = Sort.Sort() has been recommended for initialization.

Installation on other WMF projects

Follow the steps:

1. Copy main module Module:Sort into your project.
   • If possible keep the name Sort.
   • If another name is required due to conflict or naming convention or non-latin script then choose a different one.
2. Register this module at d:Q24205172.
3. Copy desired sub modules, and keep the chosen root name.
4. Ready.
5. Consider translation of doc page.
6. Consider Module:Sort/local adaption to local wiki.

Adaption to local wiki

Module:Sort/local, if present, permits local configuration.

simpleDatePattern

pattern for #time: – formatting one particular day

Default: j M Y

Usage

General library; no limitations.

Dependencies

No other than sub modules.

Sub modules

• Module:Sort/latin containing the collation table for latin based scripts.
• Module:Sort/latinDIN5007m2 containing the collation table for DIN 5007 Variante 2.
• Module:Sort/latinAT containing the collation table specific for Austrian.
• Module:Sort/latinCS containing the collation table specific for Czechoslovakian.
• Module:Sort/latinDA containing the collation table specific for Danish.
• Module:Sort/latinScand containing a collation table specific for scandinavian languages.
• Module:Sort/currency containing a collation table for currency symbols.
• Module:Sort/utf8max2bytes containing a collation table only reducing to 2 Bytes in UTF-8.
• Module:Sort/unquote supports discarding of quotation marks.
• Module:Sort/local adaption to local wiki.

Envisioned

• Module:Sort/cyrillic – containing collation table for cyrillic based scripts (Ukrainian etc.).
• Module:Sort/greek – containing collation table for greek scripts (polytonic).
• Module:Sort/uni – containing collation table for all (letter based?) script systems.

Internationalisation

Not necessary.