查看“模块:Emoji”的源代码

local p = {}

local data = require('Module:emoji/data')

local function getEmojiMeta(data, name)
    -- 获取该名称 emoji 的元数据, 处理别名
    local meta = name
    while true do
        meta = data.emojis[meta]
        if type(meta) == 'table' then
            return meta, true
        elseif meta == nil then
            return 'emoji遗失, 名称: ' .. name, false
        elseif type(meta) ~= 'string' then
            return 'emoji配置不正确, 类型: ' .. type(meta), false
        end
    end
end

local function resolveVariety(meta, varietyName)
    -- 处理变种 (如果指定了)
    -- 变种暂时不支持别名 (懒)
    meta = (meta.aliases or {})[varietyName]
    if meta == nil then
        return 'emoji变种遗失, 变种名称: ' .. varietyName, false
    elseif type(meta) == 'string' then
        return 'emoji变种暂未支持别名', false
    elseif type(meta) ~= 'table' then
        return 'emoji变种配置不正确, 类型:' .. type(meta), false
    end
    return meta, true
end

function p.emoji()
    local frame = mw.getCurrentFrame():getParent()
    local name = frame.args[1]
    local var = nil

    -- 接受两种格式来指定变种:
    -- {{e|名称/变种名}}
    -- {{e|名称|变种名}}
    local varSepPosi = string.find(name, '/')
    if varSepPosi ~= nil then
        var = string.sub(name, varSepPosi + 1)
        name = string.sub(name, 1, varSepPosi - 1)
    else
        var = frame.args[2]
    end

    local metaOrError, succ = getEmojiMeta(data, name)
    if not succ then
        return frame:expandTemplate {
            title = '？',
            args = {
                '[[help:emoji|❓]]',
                metaOrError,
            },
        }
    end
    local meta = metaOrError
    
    if var ~= nil then
        local metaOrError, succ = resolveVariety(meta, var)
        if not succ then
            return frame:expandTemplate {
                title = '？',
                args = {
                    '[[help:emoji|❓]]',
                    metaOrError,
                },
            }
        end
        meta = metaOrError
    end

    if type(meta.position) ~= 'table'
        or type(meta.position[1]) ~= 'number'
        or type(meta.position[2]) ~= 'number' 
    then
        return frame:expandTemplate {
            title = '？',
            args = {
                '[[help:emoji|❓]]',
                'emoji位置配置不正确',
            },
        }
    end

    local image = data.texture.image
    local row = meta.position[1]
    local col = meta.position[2]
    local width = data.texture.unitSize[1]
    local height = data.texture.unitSize[2]
    local y = row * height
    local x = col * width
    
    return frame:expandTemplate {
        title = 'image crop‎‎',
        width = width,
        height = height,
        y = y,
        x = x,
        image = '[[File:' .. image .. '|link=help:emoji]]',
    }

end

return p