模組:China Expwy Name

可在模組:China Expwy Name/doc建立此模組的說明文件

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-- Module:China Expwy Name - Lua module for China Expwy Name template
-----------------------------------------------------------------------
-- For the {{China Expwy Name}} code-name convensions

local p = {}

-- Icon width for different code, according to GB5768-2009
local width_translation = {
    [1] = "22px",
    [2] = "27px",
    [3] = "32px",
    [4] = "37px"
}
-- Province library
local province_lib = mw.loadData("Module:China Expwy Name/Province")
-- Main expressway code-name translation library
local expwy_lib = mw.loadData("Module:China Expwy Name/NameFromCode")
local image_refs = mw.loadData("Module:China Expwy Name/ImageRefs")
-- Code translation against ambiguity, such as G1501s
local code_translation = mw.loadData("Module:China Expwy Name/TranslateCode")

function trim(s)
  return s:match "^%s*(.-)%s*$"
end

function clean_tags(s)
    return string.gsub(string.gsub(trim(s), '<.->', ''), "'", "")
end

function internal_translatecode(province, id)
    if code_translation[province] == nil or code_translation[province][id] == nil then
        return id
    else
        return code_translation[province][id]
    end
end

-- Functionality for code-name conversion
function p.fullname(frame)
    if frame.args[1] == nil then
        return "error"
    else
        id = clean_tags(string.upper(frame.args[1]))
    end
    if frame.args[2] == nil then
        province = "CHINA"
    else
        province = trim(string.upper(frame.args[2]))
    end
    if province_lib.chn_lib[province] ~= nil then
        province = province_lib.chn_lib[province]
    end
    if expwy_lib[province] == nil then
        return "error"
    elseif expwy_lib[province][id] == nil then
        return "error"
    else
        return expwy_lib[province][id]
    end
end

-- Functionality for raw code fetching (e.g., G1501SH -> G1501)
function p.translatecode(frame)
    if frame.args[1] == nil then
        return ""
    else
        id = clean_tags(string.upper(frame.args[1]))
    end
    if frame.args[2] == nil then
        province = "CHINA"
    else
        province = trim(string.upper(frame.args[2]))
    end
    if province_lib.chn_lib[province] ~= nil then
        province = province_lib.chn_lib[province]
    end
    return internal_translatecode(province, id)
end

function internal_image_link(frame, typ, link)
    if frame.args[1] == nil then
        return ""
    else
        id = clean_tags(string.upper(frame.args[1]))
    end
    
    if frame.args[2] == nil or trim(frame.args[2]) == '' then
        province = "CHINA"
    else
        province = trim(string.upper(frame.args[2]))
    end
    if province_lib.chn_lib[province] ~= nil then
        province = province_lib.chn_lib[province]
    end
    
    true_code = internal_translatecode(province, id)
    true_code_len = string.len(true_code) - 1
    if frame.args[3] ~= nil and string.upper(frame.args[3]) ~= "D" then
        image_width = frame.args[3]
    else
        if width_translation[true_code_len] == nil then
            return ""
        else
            image_width = width_translation[true_code_len]
        end
    end

    image_ref_exists = false
    if typ == 0 then -- sign no name
        base_image_name = province_lib.db[province].image_prefix .. " Expwy " .. true_code .. " sign no name"
        if image_refs[province] ~= nil and image_refs[province][true_code] ~= nil and image_refs[province][true_code].no_name ~= nil then
            image_ref_exists = image_refs[province][true_code].no_name
        end
    else -- sign with name
        base_image_name = province_lib.db[province].image_prefix .. " Expwy " .. id .. " sign with name"
        if image_refs[province] ~= nil and image_refs[province][id] ~= nil and image_refs[province][id].with_name ~= nil then
            image_ref_exists = image_refs[province][id].with_name
        end
    end

    if not image_ref_exists then
        svg_title = mw.title.makeTitle("File", base_image_name .. '.svg')
        image_ref_exists = svg_title.fileExists
    end

    if image_ref_exists then
        if link == nil then
            return '[[File:' .. base_image_name .. '.svg|' .. image_width .. '|' .. true_code .. ']]'
        else
            return '[[File:' .. base_image_name .. '.svg|' .. image_width .. '|' .. true_code .. '|link=' .. link .. ']]'
        end
    else
        return ""
    end
end

-- Functionality for sign width fetching
function p.image_no_name(frame)
    return internal_image_link(frame, 0, nil)
end

-- Functionality for sign width fetching
function p.image_with_name(frame)
    return internal_image_link(frame, 1, nil)
end

function p.image_link_with_name(frame)
    return internal_image_link(frame, 1, p.fullname(frame))
end

function p.image_link_no_name(frame)
    return internal_image_link(frame, 0, p.fullname(frame))
end

-- Functionality for sign width fetching
function p.signwidth(frame)
    if frame.args[1] == nil then
        return width_translation[1]
    else
        id = clean_tags(string.upper(frame.args[1]))
    end
    
    if frame.args[2] == nil then
        province = "CHINA"
    else
        province = trim(string.upper(frame.args[2]))
    end
    
    if province_lib.chn_lib[province] ~= nil then
        province = province_lib.chn_lib[province]
    end
    
    true_code_len = string.len(internal_translatecode(province, id)) - 1
    if width_translation[true_code_len] == nil then
        return width_translation[1]
    else
        return width_translation[true_code_len]
    end
end

function p.province_short_name(frame)
    if frame.args[1] == nil then
        return ""
    end
    province = trim(string.upper(frame.args[1]))
    if province_lib.chn_lib[province] ~= nil then
        province = province_lib.chn_lib[province]
    end
    if province_lib.db[province] == nil then
        return ""
    end
    return province_lib.db[province].short_name
end

function p.province_highway_link(frame)
    if frame.args[1] == nil then
        return ""
    end
    province = trim(string.upper(frame.args[1]))
    if province_lib.chn_lib[province] ~= nil then
        province = province_lib.chn_lib[province]
    end
    if province_lib.db[province] == nil then
        return ""
    end
    return '[[' .. province_lib.db[province].expwy_link .. ']]'
end

function p.enumerate_road_ids(frame)
    out_str = ''
    for province, pset in pairs(expwy_lib) do
        for road_id, road_name in pairs(pset) do
            true_code = internal_translatecode(province, road_id)
            road_str = province .. '|' .. province_lib.db[province].image_prefix .. '|' .. road_id .. '|' .. true_code
            if out_str == '' then
                out_str = road_str
            else
                out_str = out_str .. ';' .. road_str
            end
        end
    end
    return out_str
end

return p