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モジュール:File (ソースを閲覧)

2023年5月8日 (月) 09:09時点における版

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-- Module for handling Media files (Origin: Wikimedia Commons)
-- Module for handling Media files (Origin: Wikimedia Commons)


-- Helpers
require('strict')
local h = {}
 
h.expandPage = function(fullPageName, args)
-- ==================================================
-- This expansion may fail, use it with pcall and inspect error status
-- === helper Lookup table ==========================
return mw.getCurrentFrame():expandTemplate{title = ':' .. fullPageName, args}
-- ==================================================
end
 
h.expandPageNoFail = function(fullPageName, args)
local extensionMap = {
local ok, wikiText = pcall(h.expandPage, fullPageName, args)
if ok then
return wikiText
end
return ''
end
-- Limits in megapixels are currently stored in Commons templates, they could be in this module.
-- There may be more limits for other supported mime types (djvu, flac, ogv, pdf, svg, webm, xcf).
h.maxthumbMap = {
-- ['image/gif'] = h.expandPageNoFail('Template:LargeTIFF/limit', {}), -- current value is '50' but higher now
['image/png' ] = h.expandPageNoFail('Template:LargePNG/limit', {}), -- current value is '2500'
['image/tiff'] = h.expandPageNoFail('Template:LargeTIFF/limit', {}), -- current value is '50' but higher now
}
h.maxthumbMap['image/gif' ] = h.maxthumbMap['image/tiff'] -- current value is '50' but higher now
h.extensionMap = {
-- File types with full support in Commons (See [[c:Commons:File types]]).
-- File types with full support in Commons (See [[c:Commons:File types]]).
DJVU = 'image/vnd.djvu',
DJVU = 'image/vnd.djvu',
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FLV  = 'video/x-flv', -- (deprecated, replaced by MP4) please convert to OGV or WEBM
FLV  = 'video/x-flv', -- (deprecated, replaced by MP4) please convert to OGV or WEBM
ICO  = 'image/vnd.microsoft.icon', -- used in MediaWiki resources for 'website icons'
ICO  = 'image/vnd.microsoft.icon', -- used in MediaWiki resources for 'website icons'
MP4  = 'video/mp4', -- please convert to OGV or WEBM
MP4  = 'video/mp4',  
QT  = 'video/quicktime', -- (deprecated, replaced by MP4) please convert to OGV or WEBM
QT  = 'video/quicktime', -- (deprecated, replaced by MP4) please convert to OGV or WEBM
RA  = 'audio/vnd.rn-realaudio', -- (deprecated, replaced by MP3) please convert to OGA
RA  = 'audio/vnd.rn-realaudio', -- (deprecated, replaced by MP3) please convert to OGA
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XLS  = 'application/vnd.ms-excel', -- please convert to PDF, DJVU, or Wiki
XLS  = 'application/vnd.ms-excel', -- please convert to PDF, DJVU, or Wiki
}
}
h.parse = require("Module:HTMLParser").parse


local File = function(title)
-- ==================================================
local funcs = {}
-- === Local functions ==============================
local titleInstance, metadataInstance
-- ==================================================
 
local function filename(frame)
return frame.args[1] or frame.args["file"] or frame.args["title"]
end


function getTitle()
local function getMetadata(frame)
if titleInstance == nil then
local fname = filename(frame)
titleInstance = mw.title.new(title, 6)
local title
end
if fname then
return titleInstance
        title = mw.title.new(fname, 6)
else
        title = mw.title.getCurrentTitle()
end
if title then
return title.file
else
return {exists=false}
end
end
end


function getFullName()
-- ==================================================
return getTitle().prefixedText
-- === External functions ===========================
end
-- ==================================================
local p = {}


-- =p.File("Foo.bar.svg").extension()
-- p.csExtension("Foo.bar.svg")
-- @return "svg"
-- @return "svg"
funcs.extension = function()
function p.csExtension(frame)
local parts = mw.text.split(title, '.', true)
local fname = filename(frame) or mw.title.getCurrentTitle().text
local parts = mw.text.split(fname, '.', true)
if #parts>1 then
return parts[#parts]
return parts[#parts]
else
return ''
end
end
end


-- =p.File("Foo.bar.svg").woExtension()
function p.extension(frame)
-- @return "Foo.bar"
return p.csExtension(frame):lower()
-- Original author: Bawolff at [[Module:FileName]]
end
funcs.woExtension = function()
local parts = mw.text.split(title , '.', true)
local upTo = #parts - 1
if upTo == 0 then upTo = 1 end
return table.concat(parts, '.', 1, upTo)
end
function getMetadata()
if metadataInstance == nil then
metadataInstance = getTitle().file
end
return metadataInstance
end
funcs.metadata = function()
return getMetadata()
end


-- Mapping file extensions to MIME-types (only MIME types accepted for files in Commons).
function p.extensionUpper(frame)
-- Works even if file still does not exist.
return p.csExtension(frame):upper()
-- =p.File('Foo.bar.svg').extension()
end
-- @return 'image/svg+xml'
funcs.mime = function()
local ok, metadata = pcall(funcs.metadata())
if ok and metadata.exists then
-- Note: does not work if file does not exist, where metadata == {'exists': false} only
return metadata.mimeType
end
-- mw.log('mime() is deprecated. Use metadata().mimeType.')
return h.extensionMap[funcs.extension():upper()] or 'unknown'
end


-- =p.File('Foo.bar.tiff').maxthumb()
-- p.woExtension("Foo.bar.svg")
funcs.maxthumb = function()
-- @return "Foo.bar"
return h.maxthumbMap[funcs.mime()] or 'unknown @Module:File'
-- Original author: Bawolff at [[Module:FileName]]
end
function p.woExtension(frame)
local fname = filename(frame) or mw.title.getCurrentTitle().text
local parts = mw.text.split(fname , '.', true)
local upTo = #parts - 1
if upTo == 0 then upTo = 1 end
return table.concat(parts, '.', 1, upTo)
end


funcs.dateWorkCreated = function()
function p.mime(frame)
-- Parse the expanded wiki text into an html root node and select a child node by specific ID.
local meta  = getMetadata(frame)
local root = h.parse('<html>' ..
if meta.exists then
h.expandPageNoFail(getFullName(), {})
return meta.mimeType
:gsub('<nowiki>.*?</nowiki>', '')
else
.. '</html>')
return extensionMap[p.extensionUpper(frame)] or 'unknown'
local tdElem = root('#fileinfotpl_date')
for td in pairs(tdElem) do -- We queried an ID so there should be only one result in this loop.
-- We need the next sibling, which doesn't seem to be directly supported by HTMLParser.
-- ... so ask him for the parent <tr> node and find the first <time> element in it.
local timeElem = td.parent('time')
for t in pairs(timeElem) do
return t.attributes['datetime']
end
end
end
end
end


return funcs
function p.mimeType(frame)
return getMetadata(frame).mimeType
end
end
h.getFile = function(frame)
 
return File(frame.args[1] or frame.args["file"] or frame.args["title"] or mw.title.getCurrentTitle().text)
function p.fileExists(frame)
return getMetadata(frame).exists or ''
end
end


-- @exports
local p = {}
p.File = File
p.extension = function(frame)
return h.getFile(frame).extension():lower()
end
p.extensionUpper = function(frame)
return h.getFile(frame).extension():upper()
end
p.csExtension = function(frame)
return h.getFile(frame).extension()
end
p.woExtension = function(frame)
return h.getFile(frame).woExtension()
end
p.mime = function(frame)
return h.getFile(frame).mime()
end
p.fileExists = function(frame)
return h.getFile(frame).metadata().exists or ''
end
-- This one won't throw errors at you
-- This one won't throw errors at you
p.fileExistsRelaxed = function(frame)
function p.fileExistsRelaxed(frame)
local ok, metadata = pcall(h.getFile(frame).metadata)
local ok, metadata = pcall(getMetadata(frame))
if ok then
if ok then
return metadata.exists or ''
return metadata.exists or ''
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end
end
end
end
p.mimeType = function(frame)
 
return h.getFile(frame).metadata().mimeType
function p.maxthumb(frame)
-- Limits in megapixels are currently stored in Commons templates, they could be in this module.
-- There may be more limits for other supported mime types (djvu, flac, ogv, pdf, svg, webm, xcf).
local maxthumbMap = {
['image/gif']  = 1000,
['image/png' ] = 2500, -- see Template:LargePNG/limit
['image/tiff'] = 1000, -- see Template:LargeTIFF/limit
}
local mime = p.mime(frame)
return maxthumbMap[mime] or 'unknown @Module:File'
end
end
p.maxthumb = function(frame)
 
return h.getFile(frame).maxthumb()
function p.dateWorkCreated(frame)
return '' -- no longer supported
end
end
p.dateWorkCreated = function(frame)
 
return h.getFile(frame).dateWorkCreated(frame) or ''
function p.width(frame)
return getMetadata(frame).width
end
end
p.width = function(frame)
 
return h.getFile(frame).metadata().width
function p.height(frame)
return getMetadata(frame).height
end
end
p.height = function(frame)
 
return h.getFile(frame).metadata().height
function p.dimensions(frame)
local d = getMetadata(frame)
if d.exists then
return d.width .. ' × ' .. d.height
else
return ''
end
end
end
p.dimensions = function(frame)
 
local d = h.getFile(frame).metadata()
function p.size(frame)
return d.width .. ' × ' .. d.height
return getMetadata(frame).size
end
end
p.size = function(frame)
 
return h.getFile(frame).metadata().size
function p.pageCount(frame)
end
local pages = getMetadata(frame).pages or {1}
p.pageCount = function(frame)
local pages = h.getFile(frame).metadata().pages or {1}
return #pages
return #pages
end
end
-- Module autotest
p.runTests = function()
local toTest = require('Module:File/tests/all')
local result = true
for i, t in ipairs(toTest) do
local f = File(t.fileName)
local stringResult = ''
local ret = true
local results = {
extension = (t.extension == f.extension()),
extensionLower = (t.extensionLower == f.extension():lower()),
extensionUpper = (t.extensionUpper == f.extension():upper()),
woExtension = (t.woExtension == f.woExtension()),
mime = (t.mime == f.mime()),
maxthumb = (not (tonumber(f.maxthumb()) == nil) == t.maxthumbIsNumber),
dateWorkCreated = t.dateWorkCreated == f.dateWorkCreated()
}
for k, v in pairs(results) do
stringResult = stringResult .. k .. ': ' .. (v and 'ok    ' or 'failed') .. ' '
ret = ret and v
end
mw.log(i, ret and 'passed' or 'FAILED', t.typeOfFileName, (not ret) and ('\n\t>>\t' .. t.fileName .. '\n\t>>\t' .. stringResult) or '')
result = result and ret
end
return result
end
-- p.h = h -- if needed for running some tests


return p
return p
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