Directory macros/luatex/generic/luakeys
luakeys
luakeys
is a Lua module that can parse key-value options like the TeX packages keyval, kvsetkeys, kvoptions, xkeyval, pgfkeys etc. do. luakeys
, however, accompilshes this task entirely, by using the Lua language and doesn’t rely on TeX. Therefore this package can only be used with the TeX engine LuaTeX. Since luakeys
uses LPeg, the parsing mechanism should be pretty robust.
License
Copyright 2021-2024 Josef Friedrich
This work may be distributed and/or modified under the conditions of the LaTeX Project Public License, either version 1.3c of this license or (at your option) any later version. The latest version of this license is in
http://www.latex-project.org/lppl.txt
and version 1.3c or later is part of all distributions of LaTeX version 2008/05/04 or later.
This work has the LPPL maintenance status maintained
.
The Current Maintainer of this work is Josef Friedrich.
Documentation
Key-value pair definitions
local defs = { key = { -- Allow different key names. -- or a single string: alias = 'k' alias = { 'k', 'ke' }, -- The key is always included in the result. If no default value is -- definied, true is taken as the value. always_present = false, -- Only values listed in the array table are allowed. choices = { 'one', 'two', 'three' }, -- Possible data types: -- any, boolean, dimension, integer, number, string, list data_type = 'string', -- To provide a default value for each naked key individually. default = true, -- Can serve as a comment. description = 'Describe your key-value pair.', -- The key belongs to a mutually exclusive group of keys. exclusive_group = 'name', -- > \MacroName macro = 'MacroName', -- > \MacroName -- See http://www.lua.org/manual/5.3/manual.html#6.4.1 match = '^%d%d%d%d%-%d%d%-%d%d$', -- The name of the key, can be omitted name = 'key', -- Convert opposite (naked) keys -- into a boolean value and store this boolean under a target key: -- show -> opposite_keys = true -- hide -> opposite_keys = false -- Short form: opposite_keys = { 'show', 'hide' } opposite_keys = { [true] = 'show', [false] = 'hide' }, -- Pick a value by its data type: -- 'any', 'string', 'number', 'dimension', 'integer', 'boolean'. pick = false, -- ’false’ disables the picking. -- A function whose return value is passed to the key. process = function(value, input, result, unknown) return value end, -- To enforce that a key must be specified. required = true, -- To build nested key-value pair definitions. sub_keys = { key_level_2 = { } }, } }
Parser options (opts)
local opts = { -- Result table that is filled with each call of the parse function. accumulated_result = accumulated_result, -- Configure the delimiter that assigns a value to a key. assignment_operator = '=', -- Automatically convert dimensions into scaled points (1cm -> 1864679). convert_dimensions = false, -- Print the result table to the console. debug = false, -- The default value for naked keys (keys without a value). default = true, -- A table with some default values. The result table is merged with -- this table. defaults = { key = 'value' }, -- Key-value pair definitions. defs = { key = { default = 'value' } }, -- Specify the strings that are recognized as boolean false values. false_aliases = { 'false', 'FALSE', 'False' }, -- lower, snake, upper format_keys = { 'snake' }, -- Configure the delimiter that marks the beginning of a group. group_begin = '{', -- Configure the delimiter that marks the end of a group. group_end = '}', -- Listed in the order of execution hooks = { kv_string = function(kv_string) return kv_string end, -- Visit all key-value pairs recursively. keys_before_opts = function(key, value, depth, current, result) return key, value end, -- Visit the result table. result_before_opts = function(result) end, -- Visit all key-value pairs recursively. keys_before_def = function(key, value, depth, current, result) return key, value end, -- Visit the result table. result_before_def = function(result) end, -- Visit all key-value pairs recursively. keys = function(key, value, depth, current, result) return key, value end, -- Visit the result table. result = function(result) end, }, invert_flag = '!', -- Configure the delimiter that separates list items from each other. list_separator = ',', -- If true, naked keys are converted to values: -- { one = true, two = true, three = true } -> { 'one', 'two', 'three' } naked_as_value = false, -- Throw no error if there are unknown keys. no_error = false, -- Configure the delimiter that marks the beginning of a string. quotation_begin = '"', -- Configure the delimiter that marks the end of a string. quotation_end = '"', -- Specify the strings that are recognized as boolean true values. true_aliases = { 'true', 'TRUE', 'True' }, -- { key = { 'value' } } -> { key = 'value' } unpack = false, } local result = luakeys.parse('one,two,three', opts)
Development
luakeys
is developed using the Lua extension in Visual Studio Code. This extension understands the modified EmmyLua annotations. The Lua code is automatically formatted with the help of the LuaFormatter.
Tasks
Installing
make install
Testing
The framework busted is used for the tests.
luarocks install busted busted --exclude-tags=skip test/lua/*.lua
or
make test
Release a new version
This project uses semantic versioning.
Update version in:
- luakeys-doc.tex
- luakeys-debug.sty
- luakeys.sty
- luakeys.lua
Update copyright in:
- LICENSE
- luakeys-debug.sty
- luakeys-debug.tex
- luakeys.lua
- luakeys.sty
- luakeys.tex
- README.md
Summarize the changes in the luakeys-doc.tex as changes.
Create a new git tag git tag -sa 0.7.0
.
Download the contents of this package in one zip archive (442.3k).
luakeys – A Lua module for parsing key-value options
This package provides a Lua module that can parse key-value options like the TeX packages keyval, kvsetkeys, kvoptions, xkeyval, pgfkeys etc. luakeys, however, accomplishes this task entirely by using the Lua language and does not rely on TeX. Therefore this package can only be used with the TeX engine LuaTeX. Since luakeys uses LPeg, the parsing mechanism should be pretty robust.
Package | luakeys |
Bug tracker | https://github.com/Josef-Friedrich/luakeys/issues |
Repository | https://github.com/Josef-Friedrich/luakeys |
Version | 0.15.0 2024-09-29 |
Licenses | The LaTeX Project Public License 1.3c |
Copyright | 2021–2024 Josef Friedrich |
Maintainer | Josef Friedrich |
Contained in | TeX Live as luakeys MiKTeX as luakeys |
Topics | Key-Val LuaTeX |