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sax.js
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// wrapper for non-node envs
;(function (sax) {
sax.parser = function (strict, opt) { return new SAXParser(strict, opt) }
sax.SAXParser = SAXParser
sax.SAXStream = SAXStream
sax.createStream = createStream
// When we pass the MAX_BUFFER_LENGTH position, start checking for buffer overruns.
// When we check, schedule the next check for MAX_BUFFER_LENGTH - (max(buffer lengths)),
// since that's the earliest that a buffer overrun could occur. This way, checks are
// as rare as required, but as often as necessary to ensure never crossing this bound.
// Furthermore, buffers are only tested at most once per write(), so passing a very
// large string into write() might have undesirable effects, but this is manageable by
// the caller, so it is assumed to be safe. Thus, a call to write() may, in the extreme
// edge case, result in creating at most one complete copy of the string passed in.
// Set to Infinity to have unlimited buffers.
sax.MAX_BUFFER_LENGTH = 64 * 1024
var buffers = [
"comment", "sgmlDecl", "textNode", "tagName", "doctype",
"procInstName", "procInstBody", "entity", "attribName",
"attribValue", "cdata", "script"
]
sax.EVENTS = // for discoverability.
[ "text"
, "processinginstruction"
, "sgmldeclaration"
, "doctype"
, "comment"
, "attribute"
, "opentag"
, "closetag"
, "opencdata"
, "cdata"
, "closecdata"
, "error"
, "end"
, "ready"
, "script"
, "opennamespace"
, "closenamespace"
]
function SAXParser (strict, opt) {
if (!(this instanceof SAXParser)) return new SAXParser(strict, opt)
var parser = this
clearBuffers(parser)
parser.q = parser.c = ""
parser.bufferCheckPosition = sax.MAX_BUFFER_LENGTH
parser.opt = opt || {}
parser.opt.lowercase = parser.opt.lowercase || parser.opt.lowercasetags
parser.looseCase = parser.opt.lowercase ? "toLowerCase" : "toUpperCase"
parser.tags = []
parser.closed = parser.closedRoot = parser.sawRoot = false
parser.tag = parser.error = null
parser.strict = !!strict
parser.noscript = !!(strict || parser.opt.noscript)
parser.state = S.BEGIN
parser.strictEntities = parser.opt.strictEntities
parser.ENTITIES = parser.strictEntities ? Object.create(sax.XML_ENTITIES) : Object.create(sax.ENTITIES)
parser.attribList = []
// namespaces form a prototype chain.
// it always points at the current tag,
// which protos to its parent tag.
if (parser.opt.xmlns) parser.ns = Object.create(rootNS)
// mostly just for error reporting
parser.trackPosition = parser.opt.position !== false
if (parser.trackPosition) {
parser.position = parser.line = parser.column = 0
}
emit(parser, "onready")
}
if (!Object.create) Object.create = function (o) {
function f () { this.__proto__ = o }
f.prototype = o
return new f
}
if (!Object.getPrototypeOf) Object.getPrototypeOf = function (o) {
return o.__proto__
}
if (!Object.keys) Object.keys = function (o) {
var a = []
for (var i in o) if (o.hasOwnProperty(i)) a.push(i)
return a
}
function checkBufferLength (parser) {
var maxAllowed = Math.max(sax.MAX_BUFFER_LENGTH, 10)
, maxActual = 0
for (var i = 0, l = buffers.length; i < l; i ++) {
var len = parser[buffers[i]].length
if (len > maxAllowed) {
// Text/cdata nodes can get big, and since they're buffered,
// we can get here under normal conditions.
// Avoid issues by emitting the text node now,
// so at least it won't get any bigger.
switch (buffers[i]) {
case "textNode":
closeText(parser)
break
case "cdata":
emitNode(parser, "oncdata", parser.cdata)
parser.cdata = ""
break
case "script":
emitNode(parser, "onscript", parser.script)
parser.script = ""
break
default:
error(parser, "Max buffer length exceeded: "+buffers[i])
}
}
maxActual = Math.max(maxActual, len)
}
// schedule the next check for the earliest possible buffer overrun.
parser.bufferCheckPosition = (sax.MAX_BUFFER_LENGTH - maxActual)
+ parser.position
}
function clearBuffers (parser) {
for (var i = 0, l = buffers.length; i < l; i ++) {
parser[buffers[i]] = ""
}
}
function flushBuffers (parser) {
closeText(parser)
if (parser.cdata !== "") {
emitNode(parser, "oncdata", parser.cdata)
parser.cdata = ""
}
if (parser.script !== "") {
emitNode(parser, "onscript", parser.script)
parser.script = ""
}
}
SAXParser.prototype =
{ end: function () { end(this) }
, write: write
, resume: function () { this.error = null; return this }
, close: function () { return this.write(null) }
, flush: function () { flushBuffers(this) }
}
try {
var Stream = require("stream").Stream
} catch (ex) {
var Stream = function () {}
}
var streamWraps = sax.EVENTS.filter(function (ev) {
return ev !== "error" && ev !== "end"
})
function createStream (strict, opt) {
return new SAXStream(strict, opt)
}
function SAXStream (strict, opt) {
if (!(this instanceof SAXStream)) return new SAXStream(strict, opt)
Stream.apply(this)
this._parser = new SAXParser(strict, opt)
this.writable = true
this.readable = true
var me = this
this._parser.onend = function () {
me.emit("end")
}
this._parser.onerror = function (er) {
me.emit("error", er)
// if didn't throw, then means error was handled.
// go ahead and clear error, so we can write again.
me._parser.error = null
}
this._decoder = null;
streamWraps.forEach(function (ev) {
Object.defineProperty(me, "on" + ev, {
get: function () { return me._parser["on" + ev] },
set: function (h) {
if (!h) {
me.removeAllListeners(ev)
return me._parser["on"+ev] = h
}
me.on(ev, h)
},
enumerable: true,
configurable: false
})
})
}
SAXStream.prototype = Object.create(Stream.prototype,
{ constructor: { value: SAXStream } })
SAXStream.prototype.write = function (data) {
if (typeof Buffer === 'function' &&
typeof Buffer.isBuffer === 'function' &&
Buffer.isBuffer(data)) {
if (!this._decoder) {
var SD = require('string_decoder').StringDecoder
this._decoder = new SD('utf8')
}
data = this._decoder.write(data);
}
this._parser.write(data.toString())
this.emit("data", data)
return true
}
SAXStream.prototype.end = function (chunk) {
if (chunk && chunk.length) this.write(chunk)
this._parser.end()
return true
}
SAXStream.prototype.on = function (ev, handler) {
var me = this
if (!me._parser["on"+ev] && streamWraps.indexOf(ev) !== -1) {
me._parser["on"+ev] = function () {
var args = arguments.length === 1 ? [arguments[0]]
: Array.apply(null, arguments)
args.splice(0, 0, ev)
me.emit.apply(me, args)
}
}
return Stream.prototype.on.call(me, ev, handler)
}
// character classes and tokens
var whitespace = "\r\n\t "
// this really needs to be replaced with character classes.
// XML allows all manner of ridiculous numbers and digits.
, number = "0124356789"
, letter = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
// (Letter | "_" | ":")
, quote = "'\""
, entity = number+letter+"#"
, attribEnd = whitespace + ">"
, CDATA = "[CDATA["
, DOCTYPE = "DOCTYPE"
, XML_NAMESPACE = "http://www.w3.org/XML/1998/namespace"
, XMLNS_NAMESPACE = "http://www.w3.org/2000/xmlns/"
, rootNS = { xml: XML_NAMESPACE, xmlns: XMLNS_NAMESPACE }
// turn all the string character sets into character class objects.
whitespace = charClass(whitespace)
number = charClass(number)
letter = charClass(letter)
// http://www.w3.org/TR/REC-xml/#NT-NameStartChar
// This implementation works on strings, a single character at a time
// as such, it cannot ever support astral-plane characters (10000-EFFFF)
// without a significant breaking change to either this parser, or the
// JavaScript language. Implementation of an emoji-capable xml parser
// is left as an exercise for the reader.
var nameStart = /[:_A-Za-z\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD]/
var nameBody = /[:_A-Za-z\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD\u00B7\u0300-\u036F\u203F-\u2040\.\d-]/
quote = charClass(quote)
entity = charClass(entity)
attribEnd = charClass(attribEnd)
function charClass (str) {
return str.split("").reduce(function (s, c) {
s[c] = true
return s
}, {})
}
function isRegExp (c) {
return Object.prototype.toString.call(c) === '[object RegExp]'
}
function is (charclass, c) {
return isRegExp(charclass) ? !!c.match(charclass) : charclass[c]
}
function not (charclass, c) {
return !is(charclass, c)
}
var S = 0
sax.STATE =
{ BEGIN : S++ // leading byte order mark or whitespace
, BEGIN_WHITESPACE : S++ // leading whitespace
, TEXT : S++ // general stuff
, TEXT_ENTITY : S++ // & and such.
, OPEN_WAKA : S++ // <
, SGML_DECL : S++ // <!BLARG
, SGML_DECL_QUOTED : S++ // <!BLARG foo "bar
, DOCTYPE : S++ // <!DOCTYPE
, DOCTYPE_QUOTED : S++ // <!DOCTYPE "//blah
, DOCTYPE_DTD : S++ // <!DOCTYPE "//blah" [ ...
, DOCTYPE_DTD_QUOTED : S++ // <!DOCTYPE "//blah" [ "foo
, COMMENT_STARTING : S++ // <!-
, COMMENT : S++ // <!--
, COMMENT_ENDING : S++ // <!-- blah -
, COMMENT_ENDED : S++ // <!-- blah --
, CDATA : S++ // <![CDATA[ something
, CDATA_ENDING : S++ // ]
, CDATA_ENDING_2 : S++ // ]]
, PROC_INST : S++ // <?hi
, PROC_INST_BODY : S++ // <?hi there
, PROC_INST_ENDING : S++ // <?hi "there" ?
, OPEN_TAG : S++ // <strong
, OPEN_TAG_SLASH : S++ // <strong /
, ATTRIB : S++ // <a
, ATTRIB_NAME : S++ // <a foo
, ATTRIB_NAME_SAW_WHITE : S++ // <a foo _
, ATTRIB_VALUE : S++ // <a foo=
, ATTRIB_VALUE_QUOTED : S++ // <a foo="bar
, ATTRIB_VALUE_CLOSED : S++ // <a foo="bar"
, ATTRIB_VALUE_UNQUOTED : S++ // <a foo=bar
, ATTRIB_VALUE_ENTITY_Q : S++ // <foo bar="""
, ATTRIB_VALUE_ENTITY_U : S++ // <foo bar="
, CLOSE_TAG : S++ // </a
, CLOSE_TAG_SAW_WHITE : S++ // </a >
, SCRIPT : S++ // <script> ...
, SCRIPT_ENDING : S++ // <script> ... <
}
sax.XML_ENTITIES =
{ "amp" : "&"
, "gt" : ">"
, "lt" : "<"
, "quot" : "\""
, "apos" : "'"
}
sax.ENTITIES =
{ "amp" : "&"
, "gt" : ">"
, "lt" : "<"
, "quot" : "\""
, "apos" : "'"
, "AElig" : 198
, "Aacute" : 193
, "Acirc" : 194
, "Agrave" : 192
, "Aring" : 197
, "Atilde" : 195
, "Auml" : 196
, "Ccedil" : 199
, "ETH" : 208
, "Eacute" : 201
, "Ecirc" : 202
, "Egrave" : 200
, "Euml" : 203
, "Iacute" : 205
, "Icirc" : 206
, "Igrave" : 204
, "Iuml" : 207
, "Ntilde" : 209
, "Oacute" : 211
, "Ocirc" : 212
, "Ograve" : 210
, "Oslash" : 216
, "Otilde" : 213
, "Ouml" : 214
, "THORN" : 222
, "Uacute" : 218
, "Ucirc" : 219
, "Ugrave" : 217
, "Uuml" : 220
, "Yacute" : 221
, "aacute" : 225
, "acirc" : 226
, "aelig" : 230
, "agrave" : 224
, "aring" : 229
, "atilde" : 227
, "auml" : 228
, "ccedil" : 231
, "eacute" : 233
, "ecirc" : 234
, "egrave" : 232
, "eth" : 240
, "euml" : 235
, "iacute" : 237
, "icirc" : 238
, "igrave" : 236
, "iuml" : 239
, "ntilde" : 241
, "oacute" : 243
, "ocirc" : 244
, "ograve" : 242
, "oslash" : 248
, "otilde" : 245
, "ouml" : 246
, "szlig" : 223
, "thorn" : 254
, "uacute" : 250
, "ucirc" : 251
, "ugrave" : 249
, "uuml" : 252
, "yacute" : 253
, "yuml" : 255
, "copy" : 169
, "reg" : 174
, "nbsp" : 160
, "iexcl" : 161
, "cent" : 162
, "pound" : 163
, "curren" : 164
, "yen" : 165
, "brvbar" : 166
, "sect" : 167
, "uml" : 168
, "ordf" : 170
, "laquo" : 171
, "not" : 172
, "shy" : 173
, "macr" : 175
, "deg" : 176
, "plusmn" : 177
, "sup1" : 185
, "sup2" : 178
, "sup3" : 179
, "acute" : 180
, "micro" : 181
, "para" : 182
, "middot" : 183
, "cedil" : 184
, "ordm" : 186
, "raquo" : 187
, "frac14" : 188
, "frac12" : 189
, "frac34" : 190
, "iquest" : 191
, "times" : 215
, "divide" : 247
, "OElig" : 338
, "oelig" : 339
, "Scaron" : 352
, "scaron" : 353
, "Yuml" : 376
, "fnof" : 402
, "circ" : 710
, "tilde" : 732
, "Alpha" : 913
, "Beta" : 914
, "Gamma" : 915
, "Delta" : 916
, "Epsilon" : 917
, "Zeta" : 918
, "Eta" : 919
, "Theta" : 920
, "Iota" : 921
, "Kappa" : 922
, "Lambda" : 923
, "Mu" : 924
, "Nu" : 925
, "Xi" : 926
, "Omicron" : 927
, "Pi" : 928
, "Rho" : 929
, "Sigma" : 931
, "Tau" : 932
, "Upsilon" : 933
, "Phi" : 934
, "Chi" : 935
, "Psi" : 936
, "Omega" : 937
, "alpha" : 945
, "beta" : 946
, "gamma" : 947
, "delta" : 948
, "epsilon" : 949
, "zeta" : 950
, "eta" : 951
, "theta" : 952
, "iota" : 953
, "kappa" : 954
, "lambda" : 955
, "mu" : 956
, "nu" : 957
, "xi" : 958
, "omicron" : 959
, "pi" : 960
, "rho" : 961
, "sigmaf" : 962
, "sigma" : 963
, "tau" : 964
, "upsilon" : 965
, "phi" : 966
, "chi" : 967
, "psi" : 968
, "omega" : 969
, "thetasym" : 977
, "upsih" : 978
, "piv" : 982
, "ensp" : 8194
, "emsp" : 8195
, "thinsp" : 8201
, "zwnj" : 8204
, "zwj" : 8205
, "lrm" : 8206
, "rlm" : 8207
, "ndash" : 8211
, "mdash" : 8212
, "lsquo" : 8216
, "rsquo" : 8217
, "sbquo" : 8218
, "ldquo" : 8220
, "rdquo" : 8221
, "bdquo" : 8222
, "dagger" : 8224
, "Dagger" : 8225
, "bull" : 8226
, "hellip" : 8230
, "permil" : 8240
, "prime" : 8242
, "Prime" : 8243
, "lsaquo" : 8249
, "rsaquo" : 8250
, "oline" : 8254
, "frasl" : 8260
, "euro" : 8364
, "image" : 8465
, "weierp" : 8472
, "real" : 8476
, "trade" : 8482
, "alefsym" : 8501
, "larr" : 8592
, "uarr" : 8593
, "rarr" : 8594
, "darr" : 8595
, "harr" : 8596
, "crarr" : 8629
, "lArr" : 8656
, "uArr" : 8657
, "rArr" : 8658
, "dArr" : 8659
, "hArr" : 8660
, "forall" : 8704
, "part" : 8706
, "exist" : 8707
, "empty" : 8709
, "nabla" : 8711
, "isin" : 8712
, "notin" : 8713
, "ni" : 8715
, "prod" : 8719
, "sum" : 8721
, "minus" : 8722
, "lowast" : 8727
, "radic" : 8730
, "prop" : 8733
, "infin" : 8734
, "ang" : 8736
, "and" : 8743
, "or" : 8744
, "cap" : 8745
, "cup" : 8746
, "int" : 8747
, "there4" : 8756
, "sim" : 8764
, "cong" : 8773
, "asymp" : 8776
, "ne" : 8800
, "equiv" : 8801
, "le" : 8804
, "ge" : 8805
, "sub" : 8834
, "sup" : 8835
, "nsub" : 8836
, "sube" : 8838
, "supe" : 8839
, "oplus" : 8853
, "otimes" : 8855
, "perp" : 8869
, "sdot" : 8901
, "lceil" : 8968
, "rceil" : 8969
, "lfloor" : 8970
, "rfloor" : 8971
, "lang" : 9001
, "rang" : 9002
, "loz" : 9674
, "spades" : 9824
, "clubs" : 9827
, "hearts" : 9829
, "diams" : 9830
}
Object.keys(sax.ENTITIES).forEach(function (key) {
var e = sax.ENTITIES[key]
var s = typeof e === 'number' ? String.fromCharCode(e) : e
sax.ENTITIES[key] = s
})
for (var S in sax.STATE) sax.STATE[sax.STATE[S]] = S
// shorthand
S = sax.STATE
function emit (parser, event, data) {
parser[event] && parser[event](data)
}
function emitNode (parser, nodeType, data) {
if (parser.textNode) closeText(parser)
emit(parser, nodeType, data)
}
function closeText (parser) {
parser.textNode = textopts(parser.opt, parser.textNode)
if (parser.textNode) emit(parser, "ontext", parser.textNode)
parser.textNode = ""
}
function textopts (opt, text) {
if (opt.trim) text = text.trim()
if (opt.normalize) text = text.replace(/\s+/g, " ")
return text
}
function error (parser, er) {
closeText(parser)
if (parser.trackPosition) {
er += "\nLine: "+parser.line+
"\nColumn: "+parser.column+
"\nChar: "+parser.c
}
er = new Error(er)
parser.error = er
emit(parser, "onerror", er)
return parser
}
function end (parser) {
if (parser.sawRoot && !parser.closedRoot) strictFail(parser, "Unclosed root tag")
if ((parser.state !== S.BEGIN) &&
(parser.state !== S.BEGIN_WHITESPACE) &&
(parser.state !== S.TEXT))
error(parser, "Unexpected end")
closeText(parser)
parser.c = ""
parser.closed = true
emit(parser, "onend")
SAXParser.call(parser, parser.strict, parser.opt)
return parser
}
function strictFail (parser, message) {
if (typeof parser !== 'object' || !(parser instanceof SAXParser))
throw new Error('bad call to strictFail');
if (parser.strict) error(parser, message)
}
function newTag (parser) {
if (!parser.strict) parser.tagName = parser.tagName[parser.looseCase]()
var parent = parser.tags[parser.tags.length - 1] || parser
, tag = parser.tag = { name : parser.tagName, attributes : {} }
// will be overridden if tag contails an xmlns="foo" or xmlns:foo="bar"
if (parser.opt.xmlns) tag.ns = parent.ns
parser.attribList.length = 0
}
function qname (name, attribute) {
var i = name.indexOf(":")
, qualName = i < 0 ? [ "", name ] : name.split(":")
, prefix = qualName[0]
, local = qualName[1]
// <x "xmlns"="http://foo">
if (attribute && name === "xmlns") {
prefix = "xmlns"
local = ""
}
return { prefix: prefix, local: local }
}
function attrib (parser) {
if (!parser.strict) parser.attribName = parser.attribName[parser.looseCase]()
if (parser.attribList.indexOf(parser.attribName) !== -1 ||
parser.tag.attributes.hasOwnProperty(parser.attribName)) {
return parser.attribName = parser.attribValue = ""
}
if (parser.opt.xmlns) {
var qn = qname(parser.attribName, true)
, prefix = qn.prefix
, local = qn.local
if (prefix === "xmlns") {
// namespace binding attribute; push the binding into scope
if (local === "xml" && parser.attribValue !== XML_NAMESPACE) {
strictFail( parser
, "xml: prefix must be bound to " + XML_NAMESPACE + "\n"
+ "Actual: " + parser.attribValue )
} else if (local === "xmlns" && parser.attribValue !== XMLNS_NAMESPACE) {
strictFail( parser
, "xmlns: prefix must be bound to " + XMLNS_NAMESPACE + "\n"
+ "Actual: " + parser.attribValue )
} else {
var tag = parser.tag
, parent = parser.tags[parser.tags.length - 1] || parser
if (tag.ns === parent.ns) {
tag.ns = Object.create(parent.ns)
}
tag.ns[local] = parser.attribValue
}
}
// defer onattribute events until all attributes have been seen
// so any new bindings can take effect; preserve attribute order
// so deferred events can be emitted in document order
parser.attribList.push([parser.attribName, parser.attribValue])
} else {
// in non-xmlns mode, we can emit the event right away
parser.tag.attributes[parser.attribName] = parser.attribValue
emitNode( parser
, "onattribute"
, { name: parser.attribName
, value: parser.attribValue } )
}
parser.attribName = parser.attribValue = ""
}
function openTag (parser, selfClosing) {
if (parser.opt.xmlns) {
// emit namespace binding events
var tag = parser.tag
// add namespace info to tag
var qn = qname(parser.tagName)
tag.prefix = qn.prefix
tag.local = qn.local
tag.uri = tag.ns[qn.prefix] || ""
if (tag.prefix && !tag.uri) {
strictFail(parser, "Unbound namespace prefix: "
+ JSON.stringify(parser.tagName))
tag.uri = qn.prefix
}
var parent = parser.tags[parser.tags.length - 1] || parser
if (tag.ns && parent.ns !== tag.ns) {
Object.keys(tag.ns).forEach(function (p) {
emitNode( parser
, "onopennamespace"
, { prefix: p , uri: tag.ns[p] } )
})
}
// handle deferred onattribute events
// Note: do not apply default ns to attributes:
// http://www.w3.org/TR/REC-xml-names/#defaulting
for (var i = 0, l = parser.attribList.length; i < l; i ++) {
var nv = parser.attribList[i]
var name = nv[0]
, value = nv[1]
, qualName = qname(name, true)
, prefix = qualName.prefix
, local = qualName.local
, uri = prefix == "" ? "" : (tag.ns[prefix] || "")
, a = { name: name
, value: value
, prefix: prefix
, local: local
, uri: uri
}
// if there's any attributes with an undefined namespace,
// then fail on them now.
if (prefix && prefix != "xmlns" && !uri) {
strictFail(parser, "Unbound namespace prefix: "
+ JSON.stringify(prefix))
a.uri = prefix
}
parser.tag.attributes[name] = a
emitNode(parser, "onattribute", a)
}
parser.attribList.length = 0
}
parser.tag.isSelfClosing = !!selfClosing
// process the tag
parser.sawRoot = true
parser.tags.push(parser.tag)
emitNode(parser, "onopentag", parser.tag)
if (!selfClosing) {
// special case for <script> in non-strict mode.
if (!parser.noscript && parser.tagName.toLowerCase() === "script") {
parser.state = S.SCRIPT
} else {
parser.state = S.TEXT
}
parser.tag = null
parser.tagName = ""
}
parser.attribName = parser.attribValue = ""
parser.attribList.length = 0
}
function closeTag (parser) {
if (!parser.tagName) {
strictFail(parser, "Weird empty close tag.")
parser.textNode += "</>"
parser.state = S.TEXT
return
}
if (parser.script) {
if (parser.tagName !== "script") {
parser.script += "</" + parser.tagName + ">"
parser.tagName = ""
parser.state = S.SCRIPT
return
}
emitNode(parser, "onscript", parser.script)
parser.script = ""
}
// first make sure that the closing tag actually exists.
// <a><b></c></b></a> will close everything, otherwise.
var t = parser.tags.length
var tagName = parser.tagName
if (!parser.strict) tagName = tagName[parser.looseCase]()
var closeTo = tagName
while (t --) {
var close = parser.tags[t]
if (close.name !== closeTo) {
// fail the first time in strict mode
strictFail(parser, "Unexpected close tag")
} else break
}
// didn't find it. we already failed for strict, so just abort.
if (t < 0) {
strictFail(parser, "Unmatched closing tag: "+parser.tagName)
parser.textNode += "</" + parser.tagName + ">"
parser.state = S.TEXT
return
}
parser.tagName = tagName
var s = parser.tags.length
while (s --> t) {
var tag = parser.tag = parser.tags.pop()
parser.tagName = parser.tag.name
emitNode(parser, "onclosetag", parser.tagName)
var x = {}
for (var i in tag.ns) x[i] = tag.ns[i]
var parent = parser.tags[parser.tags.length - 1] || parser
if (parser.opt.xmlns && tag.ns !== parent.ns) {
// remove namespace bindings introduced by tag
Object.keys(tag.ns).forEach(function (p) {
var n = tag.ns[p]
emitNode(parser, "onclosenamespace", { prefix: p, uri: n })
})
}
}
if (t === 0) parser.closedRoot = true
parser.tagName = parser.attribValue = parser.attribName = ""
parser.attribList.length = 0
parser.state = S.TEXT
}
function parseEntity (parser) {
var entity = parser.entity
, entityLC = entity.toLowerCase()
, num
, numStr = ""
if (parser.ENTITIES[entity])
return parser.ENTITIES[entity]
if (parser.ENTITIES[entityLC])
return parser.ENTITIES[entityLC]
entity = entityLC
if (entity.charAt(0) === "#") {
if (entity.charAt(1) === "x") {
entity = entity.slice(2)
num = parseInt(entity, 16)
numStr = num.toString(16)
} else {
entity = entity.slice(1)
num = parseInt(entity, 10)
numStr = num.toString(10)
}
}
entity = entity.replace(/^0+/, "")
if (numStr.toLowerCase() !== entity) {
strictFail(parser, "Invalid character entity")
return "&"+parser.entity + ";"
}
return String.fromCodePoint(num)
}
function write (chunk) {
var parser = this
if (this.error) throw this.error
if (parser.closed) return error(parser,
"Cannot write after close. Assign an onready handler.")
if (chunk === null) return end(parser)
var i = 0, c = ""
while (parser.c = c = chunk.charAt(i++)) {
if (parser.trackPosition) {
parser.position ++
if (c === "\n") {
parser.line ++
parser.column = 0
} else parser.column ++
}
switch (parser.state) {
case S.BEGIN:
parser.state = S.BEGIN_WHITESPACE
if (c === "\uFEFF") {
continue;
}
// no continue - fall through
case S.BEGIN_WHITESPACE:
if (c === "<") {
parser.state = S.OPEN_WAKA
parser.startTagPosition = parser.position
} else if (not(whitespace,c)) {
// have to process this as a text node.
// weird, but happens.
strictFail(parser, "Non-whitespace before first tag.")
parser.textNode = c
parser.state = S.TEXT
}
continue
case S.TEXT:
if (parser.sawRoot && !parser.closedRoot) {
var starti = i-1
while (c && c!=="<" && c!=="&") {
c = chunk.charAt(i++)
if (c && parser.trackPosition) {
parser.position ++
if (c === "\n") {
parser.line ++
parser.column = 0
} else parser.column ++
}
}
parser.textNode += chunk.substring(starti, i-1)
}
if (c === "<" && !(parser.sawRoot && parser.closedRoot && !parser.strict)) {
parser.state = S.OPEN_WAKA
parser.startTagPosition = parser.position
} else {
if (not(whitespace, c) && (!parser.sawRoot || parser.closedRoot))
strictFail(parser, "Text data outside of root node.")
if (c === "&") parser.state = S.TEXT_ENTITY
else parser.textNode += c
}
continue
case S.SCRIPT:
// only non-strict
if (c === "<") {
parser.state = S.SCRIPT_ENDING
} else parser.script += c
continue
case S.SCRIPT_ENDING:
if (c === "/") {
parser.state = S.CLOSE_TAG
} else {
parser.script += "<" + c
parser.state = S.SCRIPT
}