User:Js/urldecoder.js
< User:Js
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 | This user script seems to have a documentation page at User:Js/urldecoder. |
//[[user:js/urldecoder]]
function urlDecoderButton(){
var tlb = document.getElementById('toolbar')
if (!tlb) return
var bt = document.createElement('input')
bt.type = 'button'; bt.onclick = urlDecoderRun
bt.value = '→[\[]]'; bt.id = 'urlDecoder'
bt.title = 'Decode URL before cursor or all URLs in selected text'
bt.style.cssText = 'background:#adbede; height:22px; vertical-align:top; padding:0'
tlb.appendChild(bt)
if (!window.urlDecoderKey) return
bt.accessKey = urlDecoderKey
bt.title += ' ['+urlDecoderKey+']'
updateTooltipAccessKeys([bt])
}
if (wgAction=='edit' || wgAction=='submit') addOnloadHook(urlDecoderButton)
function urlDecoderRun(){ //main function
var httpRegExp = '(https?:\\/\\/[^\\]\\[\\n\\r<>" ]+)' // except []<>"
var beforeCursor = new RegExp('(\\[{0,2})'+httpRegExp+'( +[^\\]\n]+)?\\]{0,2}$', 'i')
var localPrefix = getPrefixes(wgServer.substring(7))
if (wgServer == 'https://secure.wikimedia.org')
localPrefix = getPrefixes(wgScript.split('/')[2]+'.'+wgScript.split('/')[1]+'.org')
var newText, linkSize, txtarea = document.editform.wpTextbox1
var isBeforeCursor = false
if (document.selection) { //IE/Opera
var scrollTop = document.documentElement.scrollTop
txtarea.focus()
range = document.selection.createRange()
if (!range.moveStart) return
if (range.text){
newText = processSelText(range.text)
}else { //no selection
if (!(rr=range.duplicate())) return
rr.moveStart('character', - 1000)
linkSize = processBeforeCursor(rr.text)
if (!linkSize) return
range.moveStart('character', - linkSize) //select matched
}
//replace text
if (newText != range.text){
range.text = newText
if (navigator.userAgent.indexOf('MSIE') != -1) newText = newText.replace(/\r/g,'') //for IE: do not count \r
range.moveStart('character', - newText.length)
range.select()
}
document.documentElement.scrollTop = scrollTop //restore window scroll position
}else if (txtarea.selectionStart || txtarea.selectionStart == '0') { // Mozilla
var scrollTop = txtarea.scrollTop, txt = txtarea.value
txtarea.focus()
var startPos = txtarea.selectionStart, endPos = txtarea.selectionEnd
if (startPos != endPos){
newText = processSelText(txt.substring(startPos, endPos))
}else{ //no selection
linkSize = processBeforeCursor(txt.substring((endPos-1000>0?endPos-1000:0), endPos))
if (!linkSize) return
startPos = endPos - linkSize //select matched
}
//replace text
if (newText != txt.substring(startPos, endPos)){
txtarea.value = txt.substring(0, startPos) + newText + txt.substring(endPos, txtarea.value.length)
txtarea.selectionEnd = startPos + newText.length
txtarea.selectionStart = startPos
}
txtarea.scrollTop = scrollTop
}//end of main function
function processBeforeCursor(str){ //looks for http: inside string, returns it's distance to cursor, also sets newText var
isBeforeCursor = true
var pos = str.lastIndexOf('http://') //to cut out possible preceding http links
if (pos == -1) pos = str.lastIndexOf('https://')
if (pos == -1) return 0
else if (pos > 10) str = str.substring(pos-2) //cut chars before http, leaving some room for possible [
var ma = str.match(beforeCursor) // result: (whole string)' '[', 'http:...', ' name]'
if (!ma) return 0
if (ma[3]) //link with name: add brackets just in case
newText = decodeMatchedLink(ma[0], '[', ma[2], ma[3]+']')
else //just url: add closing bracket if there is leading bracket
newText = decodeMatchedLink(ma[0], ma[1], ma[2], ma[1]?']':'')
return ma[0].length
}
function processSelText(txt){
txt = txt.replace(RegExp('(\\[{0,2})' + httpRegExp + '([^\\]\\[\\n\\r]*?\\]\\]?)?', 'ig'),
decodeMatchedLink)
if (window.urlDecoderIntLinks) txt = txt.replace(/\[\[[^\]\|\n]+/g, decodeWikiLink)
return txt
}
function decodeMatchedLink(str, bracket, url, rest){//gets: (whole string), '[', url, ' name]'
if (!bracket) return decodeLink(url) + str.substring(url.length) //just url
if (!rest) return str //no matching closing bracket
var name = rest.replace(/^ +|\]+$/g,'') //trim leading spaces and ending brackets
str = decodeLink(url, name)
if (str.charAt(0) != '[' ) str = '['+str+']' //not wikilink - restore single brackets
return str
}
function decodeLink(url, name){ //name is optional
var parts, endingDots, result
if (name) name = name.replace(/^ +| +$/g,'') //trim spaces
//secure Wikimedia link into non-secure
url = url.replace(/https:\/\/secure.wikimedia.org\/(\w+)\/(\w+)\/([^\]\|\n\r ]+)/, 'http://$2.$1.org/$3')
//bugzilla
if (parts = url.match(/^https:\/\/bugzilla\.wikimedia.org\/show_bug\.cgi\?id=(\d+)/))
return '[\[mediazilla:'+parts[1]+ (name?'|'+name:'') + ']]'
//decode %
if (url.indexOf('%') != -1) try { url = decodeURI(url) } catch(e){}
url = url.replace(/%(3B|2F|2C|3A)/g, function(s){return decodeURIComponent(s)}) // ;/,:
//encode back some chars not allowed by MediaWiki
url = url.replace(/[ <>"\[\]]/g, function(s){return encodeURIComponent(s)}) //"
if (isBeforeCursor)
for (var n in window.urlDecoderEngNames) //to eng keywords
url = url.replace(RegExp('(title=|wiki\/)('+urlDecoderEngNames[n]+':)'), '$1' + n + ':')
//analyze
parts = url.substring(7).split('/')
var domain = parts[0]
var linkPrefix = getPrefixes(domain)
//return unchanged if cannot convert into wiki link
if (!linkPrefix || parts[1] != 'wiki' || url.indexOf('?')!=-1)
return name ? '[' + url + ' ' + name + ']' : url
//convert to wiki link
var title = url.substring(parts[0].length + parts[1].length + 9) //get part after /wiki/
title = decodeWikiLink(title)
var prefixes = ''
if (linkPrefix[0] && (linkPrefix[0] != localPrefix[0])) prefixes += linkPrefix[0]
if (linkPrefix[1] && (linkPrefix[1] != localPrefix[1])) prefixes += ':'+linkPrefix[1]
if (prefixes) prefixes += ':'
if (!prefixes && isColonNeeded(title)) prefixes = ':' //leading colon for cat/file
//return result
result = '[\[' + prefixes + title
if (name) result += '|' + name + ']]'
else result = (result + ']]').replace(/(\.+)\]\]/,']]$1') //url. -> [[w]]. not [[w.]]
return result
}
function decodeWikiLink(link){
link = link.replace(/_/g, ' ').replace(/^ +| +$/g, '')
var parts = link.split('#')
if (parts.length != 2) return link
var anchor = parts[1], hidIdx = -1, hidden = []
link = parts[0]
anchor = anchor.replace( //hide IPs
/(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)/,
function(s){ hidden[++hidIdx] = s; return '\x01' + hidIdx + '\x02' }
)
//decode 4, 3 and 2-byte: http://en.wikipedia.org/wiki/UTF-8
anchor = anchor.replace(/\.F[0-4]\.[89AB][\dA-F]\.[89AB][\dA-F]\.[89AB][\dA-F]/g, deChar)
anchor = anchor.replace(/\.E[\dA-F]\.[89AB][\dA-F]\.[89AB][\dA-F]/g, deChar)
anchor = anchor.replace(/\.[CD][\dA-F]\.[89AB][\dA-F]/g, deChar)
//decode reserved 1-byte chars: http://meta.wikimedia.org/wiki/Url , http://en.wikipedia.org/wiki/Percent_encoding
anchor = anchor.replace(/\.[2-5][0-9A-F]/g, function(str){
var ch = deChar(str) // ;:@&=+$,/?%#[]<>
if ((ch != ':') &&
((encodeURIComponent(ch).replace(/%/,'.') == str) || ('!*\'()'.indexOf(ch) != -1)))
return ch
else
return str //do not decode e.g. %35 which is '5' and not supposed to be encoded
})
function deChar(str){ return tryDecode(str.replace(/\.([0-9A-F][0-9A-F])/g, '%$1')) }
function tryDecode(s){ try {s = decodeURIComponent(s)} catch(e){}; return s }
//unhide IPs
for (var i=hidIdx; i>=0; i--) anchor = anchor.replace('\x01'+i+'\x02', hidden[i])
//return
return link + '#' + anchor
}
function getPrefixes(domain){ //en.wikipedia.org -> [ 'w', 'en'] , using projPrefix{}
var projPrefix = {
'test.wikipedia.org':'testwiki',
'wikipedia.org':'w',
'wikibooks.org':'b',
'wikinews.org':'n',
'wikiquote.org':'q',
'wikisource.org':'s',
'wikiversity.org':'v',
'wiktionary.org':'wikt',
'mediawiki.org':'mw',
'www.wikimedia.org':'foundation',
'wikimedia.org':'*',
'wikimediafoundation.org':'foundation'
}
domain = domain.toLowerCase()
var proj, isFound
for (proj in projPrefix) if (domain.indexOf(proj) != -1) {isFound=true; break}
if (!isFound) return null
var prefix = projPrefix[proj], lang = ''
if (prefix == '*') prefix = domain.split('.')[0] // .wikimedia.org project
else if ((domain=domain.replace(proj, '')) && (domain != 'www.')) lang = domain.split('.')[0] //multi-lang project
//else if (prefix.charAt(0) == ':'){ //multi-lang project if (pp.length == 3) lang = pp[0]
return [prefix, lang]
}
function isColonNeeded(pg){
if (pg.indexOf(':')==-1) return false
urlDecoderNS = window.urlDecoderNS || {}
urlDecoderNS.en = 'image'
var ns = urlDecoderNS[wgContentLanguage]
if (typeof ns != 'string') ns = requestColonNS()
return RegExp('^('+ns+'|file|category) *:','i').test(pg)
}
function requestColonNS(){
var whatsthis = ' <a href="http://en.wikipedia.org/wiki/user:js/urldecoder#Localization" target=_blank>(?)</a>'
showMsg('Requesting namespaces...'+whatsthis)
var aj = sajax_init_object(), q = null, ns = []
aj.open('GET', '/w/api.php?format=json&action=query&meta=siteinfo&siprop=namespaces|namespacealiases', false)
aj.send(null)
try { eval('q='+aj.responseText); q = q.query
} catch(e){return null}
ns.push(q.namespaces[6]['*']); ns.push(q.namespaces[14]['*'])
for (var k in q.namespacealiases)
if (q.namespacealiases[k].id==6 || q.namespacealiases[k].id==14)
ns.push(q.namespacealiases[k]['*'])
ns = ns.join('|').toLowerCase()
urlDecoderNS[wgContentLanguage] = ns
showMsg("<code>urlDecoderNS = {'"+wgContentLanguage+"':'"+ns+"'}<code>"+whatsthis)
return ns
}
function showMsg(htm){
var dv = document.getElementById('edit-msg')
if (!dv){
dv = document.createElement('div')
dv.id = 'edit-msg'; dv.style.cssText = 'margin:5px; border:1px solid gray'
var tbox = document.getElementById('wpTextbox1')
tbox.parentNode.insertBefore(dv, tbox)
}
dv.innerHTML = htm; dv.style.display = ''
setTimeout(hideMsg, 15000)
}
function hideMsg(){
var dv = document.getElementById('edit-msg')
dv.style.display = 'none'
}
}