မဝ်ဂျူ:utilities
This module exports various general utility functions, which can be used by other modules.
pattern_escape
ပလေဝ်ဒါန်pattern_escape(text)
Escapes the magic characters used in patterns (Lua's version of regular expressions). For example, "^$()%.[]*+-?" becomes "<strong class="error"><span class="scribunto-error mw-scribunto-error-56ea91cf">Script error: The function "pattern_escape" does not exist.</span></strong>".
format_categories
ပလေဝ်ဒါန်format_categories(categories, lang, sort_key, sort_base, force_output)
Formats a list (table) of category names. The output is a string consisting of all categories with [[Category:...]] applied to each one, and the given sort key added. If the namespace is not the main, Appendix or Reconstruction namespaces, the output will be an empty string unless force_output is given. If no sort key is given:
- A default one is generated by using
sort_base(if given) or the current subpage name, and by removing hyphens from the beginning (so that suffixes can be sorted without a key). - If a sort key is available for the given language, it is then used to create a sort key that follows the rules for that language.
template_categorize
ပလေဝ်ဒါန်{{#invoke:utilities|template_categorize}}
This function is used by the {{categorize}}, {{catlangname}} and {{catlangcode}} templates.
catfix
ပလေဝ်ဒါန်This function adds a "catfix", which is used on language-specific category pages to add language attributes and often script classes to all entry names. The addition of language attributes and script classes makes the entry names display better (using the language- or script-specific styles specified in MediaWiki:Common.css), which is particularly important for non-English languages that do not have consistent font support in browsers.
Language attributes are added for all languages, but script classes are only added for languages with one script listed in their data file, or for languages that have a default script listed in the catfix_script list in Module:utilities/data. Some languages clearly have a default script, but still have other scripts listed in their data file and therefore need their default script to be specified. Others do not have a default script.
- Serbo-Croatian is regularly written in both the Latin and Cyrillic scripts. Because it uses two scripts, Serbo-Croation cannot have a script class applied to entries in its category pages, as only one script class can be specified at a time.
- Russian is usually written in the Cyrillic script (
Cyrl), but Braille (Brai) is also listed in its data file. So Russian needs an entry in thecatfix_scriptlist, so that theCyrl(Cyrillic) script class will be applied to entries in its category pages.
To find the scripts listed for a language, go to Module:languages and use the search box to find the data file for the language. To find out what a script code means, search the script code in Module:scripts/data
local mw = mw
local package = package
local table = table
local anchor_encode = mw.uri.anchorEncode
local concat = table.concat
local decode_entities -- Assigned when needed.
local format = string.format
local get_by_code -- Assigned when needed.
local insert = table.insert
local ipairs = ipairs
local remove_links -- Assigned when needed.
local require = require
local tonumber = tonumber
local trim -- Assigned when needed.
local type = type
local unstrip = mw.text.unstrip
local export = {}
do
local loaded = package.loaded
local loader = package.loaders[2]
--[==[
Like require, but return false if a module does not exist instead of throwing an error.
Outputs are cached in {package.loaded}, which is faster for all module types, but much faster for nonexistent modules since require will attempt to use the full loader each time (since they don't get cached in {package.loaded}).
]==]
function export.safe_require(modname)
local module = loaded[modname]
if module ~= nil then
return module
end
-- The loader returns a function if the module exists, or nil if it doesn't, and checking this is faster than using pcall with require. If found, we still use require instead of loading and caching directly, because require contains safety checks against infinite loading loops (and we do want those to throw an error).
module = loader(modname)
if module then
return require(modname)
end
loaded[modname] = false
return false
end
end
--[==[
Convert decimal to hexadecimal.
Note: About three times as fast as the hex library.
]==]
function export.dec_to_hex(dec)
dec = tonumber(dec)
if dec == nil or dec % 1 ~= 0 then
error("Input should be a decimal integer.")
end
return format("%X", dec)
end
--[==[
A helper function to strip wiki markup, giving the plaintext of what is displayed on the page.
]==]
function export.get_plaintext(text)
text = text
:gsub("%[%[", "\1")
:gsub("%]%]", "\2")
-- Remove strip markers and HTML tags.
text = unstrip(text):gsub("<[^<>\1\2]+>", "")
-- Parse internal links for the display text, and remove categories.
if remove_links == nil then
remove_links = require("Module:links").remove_links
end
text = remove_links(text)
-- Remove files.
for _, falsePositive in ipairs({"File", "Image"}) do
text = text:gsub("\1" .. falsePositive .. ":[^\1\2]+\2", "")
end
-- Parse external links for the display text.
text = text:gsub("%[(https?://[^%[%]]+)%]",
function(capture)
return capture:match("https?://[^%s%]]+%s([^%]]+)") or ""
end)
-- Any remaining square brackets aren't involved in links, but must be escaped to avoid creating new links.
:gsub("\1", "[[")
:gsub("\2", "]]")
:gsub("%[", "[")
:gsub("]", "]")
-- Strip bold, italics and soft hyphens.
:gsub("('*)'''(.-'*)'''", "%1%2")
:gsub("('*)''(.-'*)''", "%1%2")
:gsub("", "")
if decode_entities == nil then
local m_str_utils = require("Module:string utilities")
decode_entities = m_str_utils.decode_entities
trim = m_str_utils.trim
end
-- Get any HTML entities and trim.
-- Note: don't decode URL percent encoding, as it shouldn't be used in display text and may cause problems if % is used.
return trim(decode_entities(text))
end
do
local title_obj, category_namespaces, page_data, pagename, pagename_defaultsort
--[==[
Format the categories with the appropriate sort key.
* `categories` is a list of categories. Each entry in the list can be either a string (the full category, minus
the {"Category:"} prefix) or an object. In the latter case, the object should have fields
** `cat`: the full category, minus the {"Category:"} prefix (required);
** `lang`: optional language object to override the overall `lang`;
** `sort_key`: optional sort key to override the overall `sort_key`;
** `sort_base`: optional sort base to override the overall `sort_base`;
** `sc`: optional script object to override the overall `sc`.
* `lang` is an object encapsulating a language; if {nil}, the object for language code {"und"} (undetermined) will
be used. `lang` is used when computing the sort key (either from the subpage name or sort base).
* `sort_key` is placed in the category invocation, and indicates how the page will sort in the respective category.
Normally '''do not use this'''. Instead, leave it {nil}, and if you need to a control the sort order, use
{sort_base}, so that language-specific normalization is applied on top of the specified sort base. If neither
{sort_key} nor {sort_base} is specified, the default is to apply language-specific normalization to the subpage
name; see below.
* `sort_base` lets you override the default sort key while still maintaining appropriate language-specific
normalization. If {nil} is specified, this defaults to the subpage name, which is the portion of the full pagename
after subtracting the namespace prefix (and, in certain namespaces such as {User:}, but notably not in the
mainspace, after subtracting anything up through the final slash). The actual sort key is derived from the sort
base approximately by lowercasing, applying language-specific normalization and then uppercasing; note that the
same process is applied in deriving the sort key when no sort base is specified. For example, for French, Spanish,
etc. the normalization process maps accented letters to their unaccented equivalents, so that e.g. in French,
{{m|fr|ça}} sorts after {{m|fr|ca}} (instead of after the default Wikimedia sort order, which is approximately
based on Unicode sort order and places ç after z) and {{m|fr|côté}} sorts after {{m|fr|coté}} (instead of between
c and d). Similarly, in Russian the normalization process converts Cyrillic ё to a string consisting of Cyrillic е
followed by U+10FFFF, so that effectively ё sorts after е instead of the default Wikimedia sort, which (I think)
puts ё after я, the last letter of the Cyrillic alphabet.
* `force_output` forces normal output in all namespaces. Normally, nothing is output if the page isn't in the main,
Appendix:, Thesaurus:, Reconstruction: or Citations: namespaces.
* `sc` is a script object; if nil, the default will be derived from the sort base (or its default value, the
subpage name) by calling {lang:findBestScript()}. The value of `sc` is used during the sort base normalization
process; for example, languages with multiple scripts will often have script-specific normalization processes.
]==]
function export.format_categories(categories, lang, sort_key, sort_base, force_output, sc)
if type(lang) == "table" and not lang.getCode then
error("The second argument to format_categories should be a language object.")
end
title_obj = title_obj or mw.title.getCurrentTitle()
category_namespaces = category_namespaces or mw.loadData("Module:utilities/data").category_namespaces
if not (
force_output or
category_namespaces[title_obj.namespace] or
title_obj.prefixedText == "Wiktionary:Sandbox"
) then
return ""
elseif not page_data then
page_data = mw.loadData("Module:headword/data").page
pagename = page_data.encoded_pagename
pagename_defaultsort = page_data.pagename_defaultsort
end
local extra_categories
local function generate_sort_key(lang, sort_key, sort_base, sc)
-- Generate a default sort key.
-- If the sort key is "-", bypass the process of generating a sort key altogether. This is desirable when categorising (e.g.) translation requests, as the pages to be categorised are always in English/Translingual.
if sort_key == "-" then
sort_key = sort_base and sort_base:uupper() or pagename_defaultsort
else
if not lang then
if get_by_code == nil then
get_by_code = require("Module:languages").getByCode
end
lang = get_by_code("und")
end
sort_base = lang:makeSortKey(sort_base or pagename, sc) or pagename_defaultsort
if not sort_key or sort_key == "" then
sort_key = sort_base
elseif lang:getCode() ~= "und" then
if not extra_categories then
extra_categories = {}
end
insert(extra_categories, lang:getFullName() .. " terms with " .. (
sort_key:uupper() == sort_base and "redundant" or
"non-redundant non-automated"
) .. " sortkeys")
end
end
if not sort_key or sort_key == "" then
sort_key = pagename_defaultsort
end
return sort_key
end
local ret = {}
local default_sort_key = generate_sort_key(lang, sort_key, sort_base, sc)
local ins_point = 0
local function process_category(cat)
local this_sort_key
if type(cat) == "string" then
this_sort_key = default_sort_key
else
this_sort_key = generate_sort_key(cat.lang or lang, cat.sort_key or sort_key,
cat.sort_base or sort_base, cat.sc or sc)
cat = cat.cat
end
ins_point = ins_point + 1
ret[ins_point] = "[[Category:" .. cat .. "|" .. this_sort_key .. "]]"
end
for _, cat in ipairs(categories) do
process_category(cat)
end
if extra_categories then
for _, cat in ipairs(extra_categories) do
process_category(cat)
end
end
return concat(ret)
end
end
do
local catfix_scripts
--[==[
Add a "catfix", which is used on language-specific category pages to add language attributes and often script
classes to all entry names. The addition of language attributes and script classes makes the entry names display
better (using the language- or script-specific styles specified in [[MediaWiki:Common.css]]), which is particularly
important for non-English languages that do not have consistent font support in browsers.
Language attributes are added for all languages, but script classes are only added for languages with one script
listed in their data file, or for languages that have a default script listed in the {catfix_script} list in
[[Module:utilities/data]]. Some languages clearly have a default script, but still have other scripts listed in
their data file and therefore need their default script to be specified. Others do not have a default script.
* Serbo-Croatian is regularly written in both the Latin and Cyrillic scripts. Because it uses two scripts,
Serbo-Croatian cannot have a script class applied to entries in its category pages, as only one script class
can be specified at a time.
* Russian is usually written in the Cyrillic script ({{cd|Cyrl}}), but Braille ({{cd|Brai}}) is also listed in
its data file. So Russian needs an entry in the {catfix_script} list, so that the {{cd|Cyrl}} (Cyrillic) script
class will be applied to entries in its category pages.
To find the scripts listed for a language, go to [[Module:languages]] and use the search box to find the data file
for the language. To find out what a script code means, search the script code in [[Module:scripts/data]].
]==]
function export.catfix(lang, sc)
if not lang or not lang.getCanonicalName then
error('The first argument to the function "catfix" should be a language object from [[Module:languages]] or [[Module:etymology languages]].')
end
if sc and not sc.getCode then
error('The second argument to the function "catfix" should be a script object from [[Module:scripts]].')
end
local canonicalName = lang:getCanonicalName()
local fullName = lang:getFullName()
-- To add script classes to links on pages created by category boilerplate templates.
if not sc then
catfix_scripts = catfix_scripts or mw.loadData("Module:utilities/data").catfix_scripts
sc = catfix_scripts[lang:getCode()] or catfix_scripts[lang:getFullCode()]
if sc then
sc = require("Module:scripts").getByCode(sc)
end
end
local catfix_class = anchor_encode("CATFIX-" .. canonicalName)
if fullName ~= canonicalName then
catfix_class = catfix_class .. " " .. anchor_encode("CATFIX-" .. fullName)
end
return "<span id=\"catfix\" style=\"display:none;\" class=\"" .. catfix_class .. "\">" ..
require("Module:script utilities").tag_text(" ", lang, sc, nil) ..
"</span>"
end
end
--[==[
Given a type (as a string) and an arbitrary number of entities, checks whether all of those entities are language,
family, script, writing system or Wikimedia language objects. Useful for error handling in functions that require
one of these kinds of object.
If `noErr` is set, the function returns false instead of throwing an error, which allows customised error handling to
be done in the calling function.
]==]
function export.check_object(typ, noErr, ...)
local function fail(message)
if noErr then
return false
else
error(message, 3)
end
end
local objs = {...}
if #objs == 0 then
return fail("Must provide at least one object to check.")
end
for _, obj in ipairs(objs) do
if type(obj) ~= "table" or type(obj.hasType) ~= "function" then
return fail("Function expected a " .. typ .. " object, but received a " .. type(obj) .. " instead.")
elseif not (typ == "object" or obj:hasType(typ)) then
for _, wrong_type in ipairs{"family", "language", "script", "Wikimedia language", "writing system"} do
if obj:hasType(wrong_type) then
return fail("Function expected a " .. typ .. " object, but received a " .. wrong_type .. " object instead.")
end
end
return fail("Function expected a " .. typ .. " object, but received another type of object instead.")
end
end
return true
end
return export