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Editing File: /usr/share/nodejs/saxes/saxes.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.SaxesParser = exports.EVENTS = void 0;
const ed5 = require("xmlchars/xml/1.0/ed5");
const ed2 = require("xmlchars/xml/1.1/ed2");
const NSed3 = require("xmlchars/xmlns/1.0/ed3");
var isS = ed5.isS;
var isChar10 = ed5.isChar;
var isNameStartChar = ed5.isNameStartChar;
var isNameChar = ed5.isNameChar;
var S_LIST = ed5.S_LIST;
var NAME_RE = ed5.NAME_RE;
var isChar11 = ed2.isChar;
var isNCNameStartChar = NSed3.isNCNameStartChar;
var isNCNameChar = NSed3.isNCNameChar;
var NC_NAME_RE = NSed3.NC_NAME_RE;
const XML_NAMESPACE = "http://www.w3.org/XML/1998/namespace";
const XMLNS_NAMESPACE = "http://www.w3.org/2000/xmlns/";
const rootNS = {
    // eslint-disable-next-line @typescript-eslint/no-explicit-any, @typescript-eslint/no-unsafe-assignment
    __proto__: null,
    xml: XML_NAMESPACE,
    xmlns: XMLNS_NAMESPACE,
};
const XML_ENTITIES = {
    // eslint-disable-next-line @typescript-eslint/no-explicit-any, @typescript-eslint/no-unsafe-assignment
    __proto__: null,
    amp: "&",
    gt: ">",
    lt: "<",
    quot: "\"",
    apos: "'",
};
// EOC: end-of-chunk
const EOC = -1;
const NL_LIKE = -2;
const S_BEGIN = 0; // Initial state.
const S_BEGIN_WHITESPACE = 1; // leading whitespace
const S_DOCTYPE = 2; // <!DOCTYPE
const S_DOCTYPE_QUOTE = 3; // <!DOCTYPE "//blah
const S_DTD = 4; // <!DOCTYPE "//blah" [ ...
const S_DTD_QUOTED = 5; // <!DOCTYPE "//blah" [ "foo
const S_DTD_OPEN_WAKA = 6;
const S_DTD_OPEN_WAKA_BANG = 7;
const S_DTD_COMMENT = 8; //  will be recorded as
            // a comment of " blah -- bloo "
            this.state = S_DTD_COMMENT;
        }
    }
    sDTDPI() {
        if (this.captureToChar(QUESTION)) {
            this.text += "?";
            this.state = S_DTD_PI_ENDING;
        }
    }
    sDTDPIEnding() {
        const c = this.getCodeNorm();
        this.text += String.fromCodePoint(c);
        if (c === GREATER) {
            this.state = S_DTD;
        }
    }
    sText() {
        //
        // We did try a version of saxes where the S_TEXT state was split in two
        // states: one for text inside the root element, and one for text
        // outside. This was avoiding having to test this.tags.length to decide
        // what implementation to actually use.
        //
        // Peformance testing on gigabyte-size files did not show any advantage to
        // using the two states solution instead of the current one. Conversely, it
        // made the code a bit more complicated elsewhere. For instance, a comment
        // can appear before the root element so when a comment ended it was
        // necessary to determine whether to return to the S_TEXT state or to the
        // new text-outside-root state.
        //
        if (this.tags.length !== 0) {
            this.handleTextInRoot();
        }
        else {
            this.handleTextOutsideRoot();
        }
    }
    sEntity() {
        // This is essentially a specialized version of captureToChar(SEMICOLON...)
        let { i: start } = this;
        const { chunk } = this;
        // eslint-disable-next-line no-labels, no-restricted-syntax
        loop: 
        // eslint-disable-next-line no-constant-condition
        while (true) {
            switch (this.getCode()) {
                case NL_LIKE:
                    this.entity += `${chunk.slice(start, this.prevI)}\n`;
                    start = this.i;
                    break;
                case SEMICOLON: {
                    const { entityReturnState } = this;
                    const entity = this.entity + chunk.slice(start, this.prevI);
                    this.state = entityReturnState;
                    let parsed;
                    if (entity === "") {
                        this.fail("empty entity name.");
                        parsed = "&;";
                    }
                    else {
                        parsed = this.parseEntity(entity);
                        this.entity = "";
                    }
                    if (entityReturnState !== S_TEXT || this.textHandler !== undefined) {
                        this.text += parsed;
                    }
                    // eslint-disable-next-line no-labels
                    break loop;
                }
                case EOC:
                    this.entity += chunk.slice(start);
                    // eslint-disable-next-line no-labels
                    break loop;
                default:
            }
        }
    }
    sOpenWaka() {
        // Reminder: a state handler is called with at least one character
        // available in the current chunk. So the first call to get code inside of
        // a state handler cannot return ``EOC``. That's why we don't test
        // for it.
        const c = this.getCode();
        // either a /, ?, !, or text is coming next.
        if (isNameStartChar(c)) {
            this.state = S_OPEN_TAG;
            this.unget();
            this.xmlDeclPossible = false;
        }
        else {
            switch (c) {
                case FORWARD_SLASH:
                    this.state = S_CLOSE_TAG;
                    this.xmlDeclPossible = false;
                    break;
                case BANG:
                    this.state = S_OPEN_WAKA_BANG;
                    this.openWakaBang = "";
                    this.xmlDeclPossible = false;
                    break;
                case QUESTION:
                    this.state = S_PI_FIRST_CHAR;
                    break;
                default:
                    this.fail("disallowed character in tag name");
                    this.state = S_TEXT;
                    this.xmlDeclPossible = false;
            }
        }
    }
    sOpenWakaBang() {
        this.openWakaBang += String.fromCodePoint(this.getCodeNorm());
        switch (this.openWakaBang) {
            case "[CDATA[":
                if (!this.sawRoot && !this.reportedTextBeforeRoot) {
                    this.fail("text data outside of root node.");
                    this.reportedTextBeforeRoot = true;
                }
                if (this.closedRoot && !this.reportedTextAfterRoot) {
                    this.fail("text data outside of root node.");
                    this.reportedTextAfterRoot = true;
                }
                this.state = S_CDATA;
                this.openWakaBang = "";
                break;
            case "--":
                this.state = S_COMMENT;
                this.openWakaBang = "";
                break;
            case "DOCTYPE":
                this.state = S_DOCTYPE;
                if (this.doctype || this.sawRoot) {
                    this.fail("inappropriately located doctype declaration.");
                }
                this.openWakaBang = "";
                break;
            default:
                // 7 happens to be the maximum length of the string that can possibly
                // match one of the cases above.
                if (this.openWakaBang.length >= 7) {
                    this.fail("incorrect syntax.");
                }
        }
    }
    sComment() {
        if (this.captureToChar(MINUS)) {
            this.state = S_COMMENT_ENDING;
        }
    }
    sCommentEnding() {
        var _a;
        const c = this.getCodeNorm();
        if (c === MINUS) {
            this.state = S_COMMENT_ENDED;
            (_a = this.commentHandler) === null || _a === void 0 ? void 0 : _a.call(this, this.text);
            this.text = "";
        }
        else {
            this.text += `-${String.fromCodePoint(c)}`;
            this.state = S_COMMENT;
        }
    }
    sCommentEnded() {
        const c = this.getCodeNorm();
        if (c !== GREATER) {
            this.fail("malformed comment.");
            //  will be recorded as
            // a comment of " blah -- bloo "
            this.text += `--${String.fromCodePoint(c)}`;
            this.state = S_COMMENT;
        }
        else {
            this.state = S_TEXT;
        }
    }
    sCData() {
        if (this.captureToChar(CLOSE_BRACKET)) {
            this.state = S_CDATA_ENDING;
        }
    }
    sCDataEnding() {
        const c = this.getCodeNorm();
        if (c === CLOSE_BRACKET) {
            this.state = S_CDATA_ENDING_2;
        }
        else {
            this.text += `]${String.fromCodePoint(c)}`;
            this.state = S_CDATA;
        }
    }
    sCDataEnding2() {
        var _a;
        const c = this.getCodeNorm();
        switch (c) {
            case GREATER: {
                (_a = this.cdataHandler) === null || _a === void 0 ? void 0 : _a.call(this, this.text);
                this.text = "";
                this.state = S_TEXT;
                break;
            }
            case CLOSE_BRACKET:
                this.text += "]";
                break;
            default:
                this.text += `]]${String.fromCodePoint(c)}`;
                this.state = S_CDATA;
        }
    }
    // We need this separate state to check the first character fo the pi target
    // with this.nameStartCheck which allows less characters than this.nameCheck.
    sPIFirstChar() {
        const c = this.getCodeNorm();
        // This is first because in the case where the file is well-formed this is
        // the branch taken. We optimize for well-formedness.
        if (this.nameStartCheck(c)) {
            this.piTarget += String.fromCodePoint(c);
            this.state = S_PI_REST;
        }
        else if (c === QUESTION || isS(c)) {
            this.fail("processing instruction without a target.");
            this.state = c === QUESTION ? S_PI_ENDING : S_PI_BODY;
        }
        else {
            this.fail("disallowed character in processing instruction name.");
            this.piTarget += String.fromCodePoint(c);
            this.state = S_PI_REST;
        }
    }
    sPIRest() {
        // Capture characters into a piTarget while ``this.nameCheck`` run on the
        // character read returns true.
        const { chunk, i: start } = this;
        // eslint-disable-next-line no-constant-condition
        while (true) {
            const c = this.getCodeNorm();
            if (c === EOC) {
                this.piTarget += chunk.slice(start);
                return;
            }
            // NL cannot satisfy this.nameCheck so we don't have to test specifically
            // for it.
            if (!this.nameCheck(c)) {
                this.piTarget += chunk.slice(start, this.prevI);
                const isQuestion = c === QUESTION;
                if (isQuestion || isS(c)) {
                    if (this.piTarget === "xml") {
                        if (!this.xmlDeclPossible) {
                            this.fail("an XML declaration must be at the start of the document.");
                        }
                        this.state = isQuestion ? S_XML_DECL_ENDING : S_XML_DECL_NAME_START;
                    }
                    else {
                        this.state = isQuestion ? S_PI_ENDING : S_PI_BODY;
                    }
                }
                else {
                    this.fail("disallowed character in processing instruction name.");
                    this.piTarget += String.fromCodePoint(c);
                }
                break;
            }
        }
    }
    sPIBody() {
        if (this.text.length === 0) {
            const c = this.getCodeNorm();
            if (c === QUESTION) {
                this.state = S_PI_ENDING;
            }
            else if (!isS(c)) {
                this.text = String.fromCodePoint(c);
            }
        }
        // The question mark character is not valid inside any of the XML
        // declaration name/value pairs.
        else if (this.captureToChar(QUESTION)) {
            this.state = S_PI_ENDING;
        }
    }
    sPIEnding() {
        var _a;
        const c = this.getCodeNorm();
        if (c === GREATER) {
            const { piTarget } = this;
            if (piTarget.toLowerCase() === "xml") {
                this.fail("the XML declaration must appear at the start of the document.");
            }
            (_a = this.piHandler) === null || _a === void 0 ? void 0 : _a.call(this, {
                target: piTarget,
                body: this.text,
            });
            this.piTarget = this.text = "";
            this.state = S_TEXT;
        }
        else if (c === QUESTION) {
            // We ran into ?? as part of a processing instruction. We initially took
            // the first ? as a sign that the PI was ending, but it is not. So we have
            // to add it to the body but we take the new ? as a sign that the PI is
            // ending.
            this.text += "?";
        }
        else {
            this.text += `?${String.fromCodePoint(c)}`;
            this.state = S_PI_BODY;
        }
        this.xmlDeclPossible = false;
    }
    sXMLDeclNameStart() {
        const c = this.skipSpaces();
        // The question mark character is not valid inside any of the XML
        // declaration name/value pairs.
        if (c === QUESTION) {
            // It is valid to go to S_XML_DECL_ENDING from this state.
            this.state = S_XML_DECL_ENDING;
            return;
        }
        if (c !== EOC) {
            this.state = S_XML_DECL_NAME;
            this.name = String.fromCodePoint(c);
        }
    }
    sXMLDeclName() {
        const c = this.captureTo(XML_DECL_NAME_TERMINATOR);
        // The question mark character is not valid inside any of the XML
        // declaration name/value pairs.
        if (c === QUESTION) {
            this.state = S_XML_DECL_ENDING;
            this.name += this.text;
            this.text = "";
            this.fail("XML declaration is incomplete.");
            return;
        }
        if (!(isS(c) || c === EQUAL)) {
            return;
        }
        this.name += this.text;
        this.text = "";
        if (!this.xmlDeclExpects.includes(this.name)) {
            switch (this.name.length) {
                case 0:
                    this.fail("did not expect any more name/value pairs.");
                    break;
                case 1:
                    this.fail(`expected the name ${this.xmlDeclExpects[0]}.`);
                    break;
                default:
                    this.fail(`expected one of ${this.xmlDeclExpects.join(", ")}`);
            }
        }
        this.state = c === EQUAL ? S_XML_DECL_VALUE_START : S_XML_DECL_EQ;
    }
    sXMLDeclEq() {
        const c = this.getCodeNorm();
        // The question mark character is not valid inside any of the XML
        // declaration name/value pairs.
        if (c === QUESTION) {
            this.state = S_XML_DECL_ENDING;
            this.fail("XML declaration is incomplete.");
            return;
        }
        if (isS(c)) {
            return;
        }
        if (c !== EQUAL) {
            this.fail("value required.");
        }
        this.state = S_XML_DECL_VALUE_START;
    }
    sXMLDeclValueStart() {
        const c = this.getCodeNorm();
        // The question mark character is not valid inside any of the XML
        // declaration name/value pairs.
        if (c === QUESTION) {
            this.state = S_XML_DECL_ENDING;
            this.fail("XML declaration is incomplete.");
            return;
        }
        if (isS(c)) {
            return;
        }
        if (!isQuote(c)) {
            this.fail("value must be quoted.");
            this.q = SPACE;
        }
        else {
            this.q = c;
        }
        this.state = S_XML_DECL_VALUE;
    }
    sXMLDeclValue() {
        const c = this.captureTo([this.q, QUESTION]);
        // The question mark character is not valid inside any of the XML
        // declaration name/value pairs.
        if (c === QUESTION) {
            this.state = S_XML_DECL_ENDING;
            this.text = "";
            this.fail("XML declaration is incomplete.");
            return;
        }
        if (c === EOC) {
            return;
        }
        const value = this.text;
        this.text = "";
        switch (this.name) {
            case "version": {
                this.xmlDeclExpects = ["encoding", "standalone"];
                const version = value;
                this.xmlDecl.version = version;
                // This is the test specified by XML 1.0 but it is fine for XML 1.1.
                if (!/^1\.[0-9]+$/.test(version)) {
                    this.fail("version number must match /^1\\.[0-9]+$/.");
                }
                // When forceXMLVersion is set, the XML declaration is ignored.
                else if (!this.opt.forceXMLVersion) {
                    this.setXMLVersion(version);
                }
                break;
            }
            case "encoding":
                if (!/^[A-Za-z][A-Za-z0-9._-]*$/.test(value)) {
                    this.fail("encoding value must match \
/^[A-Za-z0-9][A-Za-z0-9._-]*$/.");
                }
                this.xmlDeclExpects = ["standalone"];
                this.xmlDecl.encoding = value;
                break;
            case "standalone":
                if (value !== "yes" && value !== "no") {
                    this.fail("standalone value must match \"yes\" or \"no\".");
                }
                this.xmlDeclExpects = [];
                this.xmlDecl.standalone = value;
                break;
            default:
            // We don't need to raise an error here since we've already raised one
            // when checking what name was expected.
        }
        this.name = "";
        this.state = S_XML_DECL_SEPARATOR;
    }
    sXMLDeclSeparator() {
        const c = this.getCodeNorm();
        // The question mark character is not valid inside any of the XML
        // declaration name/value pairs.
        if (c === QUESTION) {
            // It is valid to go to S_XML_DECL_ENDING from this state.
            this.state = S_XML_DECL_ENDING;
            return;
        }
        if (!isS(c)) {
            this.fail("whitespace required.");
            this.unget();
        }
        this.state = S_XML_DECL_NAME_START;
    }
    sXMLDeclEnding() {
        var _a;
        const c = this.getCodeNorm();
        if (c === GREATER) {
            if (this.piTarget !== "xml") {
                this.fail("processing instructions are not allowed before root.");
            }
            else if (this.name !== "version" &&
                this.xmlDeclExpects.includes("version")) {
                this.fail("XML declaration must contain a version.");
            }
            (_a = this.xmldeclHandler) === null || _a === void 0 ? void 0 : _a.call(this, this.xmlDecl);
            this.name = "";
            this.piTarget = this.text = "";
            this.state = S_TEXT;
        }
        else {
            // We got here because the previous character was a ?, but the question
            // mark character is not valid inside any of the XML declaration
            // name/value pairs.
            this.fail("The character ? is disallowed anywhere in XML declarations.");
        }
        this.xmlDeclPossible = false;
    }
    sOpenTag() {
        var _a;
        const c = this.captureNameChars();
        if (c === EOC) {
            return;
        }
        const tag = this.tag = {
            name: this.name,
            attributes: Object.create(null),
        };
        this.name = "";
        if (this.xmlnsOpt) {
            this.topNS = tag.ns = Object.create(null);
        }
        (_a = this.openTagStartHandler) === null || _a === void 0 ? void 0 : _a.call(this, tag);
        this.sawRoot = true;
        if (!this.fragmentOpt && this.closedRoot) {
            this.fail("documents may contain only one root.");
        }
        switch (c) {
            case GREATER:
                this.openTag();
                break;
            case FORWARD_SLASH:
                this.state = S_OPEN_TAG_SLASH;
                break;
            default:
                if (!isS(c)) {
                    this.fail("disallowed character in tag name.");
                }
                this.state = S_ATTRIB;
        }
    }
    sOpenTagSlash() {
        if (this.getCode() === GREATER) {
            this.openSelfClosingTag();
        }
        else {
            this.fail("forward-slash in opening tag not followed by >.");
            this.state = S_ATTRIB;
        }
    }
    sAttrib() {
        const c = this.skipSpaces();
        if (c === EOC) {
            return;
        }
        if (isNameStartChar(c)) {
            this.unget();
            this.state = S_ATTRIB_NAME;
        }
        else if (c === GREATER) {
            this.openTag();
        }
        else if (c === FORWARD_SLASH) {
            this.state = S_OPEN_TAG_SLASH;
        }
        else {
            this.fail("disallowed character in attribute name.");
        }
    }
    sAttribName() {
        const c = this.captureNameChars();
        if (c === EQUAL) {
            this.state = S_ATTRIB_VALUE;
        }
        else if (isS(c)) {
            this.state = S_ATTRIB_NAME_SAW_WHITE;
        }
        else if (c === GREATER) {
            this.fail("attribute without value.");
            this.pushAttrib(this.name, this.name);
            this.name = this.text = "";
            this.openTag();
        }
        else if (c !== EOC) {
            this.fail("disallowed character in attribute name.");
        }
    }
    sAttribNameSawWhite() {
        const c = this.skipSpaces();
        switch (c) {
            case EOC:
                return;
            case EQUAL:
                this.state = S_ATTRIB_VALUE;
                break;
            default:
                this.fail("attribute without value.");
                // Should we do this???
                // this.tag.attributes[this.name] = "";
                this.text = "";
                this.name = "";
                if (c === GREATER) {
                    this.openTag();
                }
                else if (isNameStartChar(c)) {
                    this.unget();
                    this.state = S_ATTRIB_NAME;
                }
                else {
                    this.fail("disallowed character in attribute name.");
                    this.state = S_ATTRIB;
                }
        }
    }
    sAttribValue() {
        const c = this.getCodeNorm();
        if (isQuote(c)) {
            this.q = c;
            this.state = S_ATTRIB_VALUE_QUOTED;
        }
        else if (!isS(c)) {
            this.fail("unquoted attribute value.");
            this.state = S_ATTRIB_VALUE_UNQUOTED;
            this.unget();
        }
    }
    sAttribValueQuoted() {
        // We deliberately do not use captureTo here. The specialized code we use
        // here is faster than using captureTo.
        const { q, chunk } = this;
        let { i: start } = this;
        // eslint-disable-next-line no-constant-condition
        while (true) {
            switch (this.getCode()) {
                case q:
                    this.pushAttrib(this.name, this.text + chunk.slice(start, this.prevI));
                    this.name = this.text = "";
                    this.q = null;
                    this.state = S_ATTRIB_VALUE_CLOSED;
                    return;
                case AMP:
                    this.text += chunk.slice(start, this.prevI);
                    this.state = S_ENTITY;
                    this.entityReturnState = S_ATTRIB_VALUE_QUOTED;
                    return;
                case NL:
                case NL_LIKE:
                case TAB:
                    this.text += `${chunk.slice(start, this.prevI)} `;
                    start = this.i;
                    break;
                case LESS:
                    this.text += chunk.slice(start, this.prevI);
                    this.fail("disallowed character.");
                    return;
                case EOC:
                    this.text += chunk.slice(start);
                    return;
                default:
            }
        }
    }
    sAttribValueClosed() {
        const c = this.getCodeNorm();
        if (isS(c)) {
            this.state = S_ATTRIB;
        }
        else if (c === GREATER) {
            this.openTag();
        }
        else if (c === FORWARD_SLASH) {
            this.state = S_OPEN_TAG_SLASH;
        }
        else if (isNameStartChar(c)) {
            this.fail("no whitespace between attributes.");
            this.unget();
            this.state = S_ATTRIB_NAME;
        }
        else {
            this.fail("disallowed character in attribute name.");
        }
    }
    sAttribValueUnquoted() {
        // We don't do anything regarding EOL or space handling for unquoted
        // attributes. We already have failed by the time we get here, and the
        // contract that saxes upholds states that upon failure, it is not safe to
        // rely on the data passed to event handlers (other than
        // ``onerror``). Passing "bad" data is not a problem.
        const c = this.captureTo(ATTRIB_VALUE_UNQUOTED_TERMINATOR);
        switch (c) {
            case AMP:
                this.state = S_ENTITY;
                this.entityReturnState = S_ATTRIB_VALUE_UNQUOTED;
                break;
            case LESS:
                this.fail("disallowed character.");
                break;
            case EOC:
                break;
            default:
                if (this.text.includes("]]>")) {
                    this.fail("the string \"]]>\" is disallowed in char data.");
                }
                this.pushAttrib(this.name, this.text);
                this.name = this.text = "";
                if (c === GREATER) {
                    this.openTag();
                }
                else {
                    this.state = S_ATTRIB;
                }
        }
    }
    sCloseTag() {
        const c = this.captureNameChars();
        if (c === GREATER) {
            this.closeTag();
        }
        else if (isS(c)) {
            this.state = S_CLOSE_TAG_SAW_WHITE;
        }
        else if (c !== EOC) {
            this.fail("disallowed character in closing tag.");
        }
    }
    sCloseTagSawWhite() {
        switch (this.skipSpaces()) {
            case GREATER:
                this.closeTag();
                break;
            case EOC:
                break;
            default:
                this.fail("disallowed character in closing tag.");
        }
    }
    // END OF STATE ENGINE METHODS
    handleTextInRoot() {
        // This is essentially a specialized version of captureTo which is optimized
        // for performing the ]]> check. A previous version of this code, checked
        // ``this.text`` for the presence of ]]>. It simplified the code but was
        // very costly when character data contained a lot of entities to be parsed.
        //
        // Since we are using a specialized loop, we also keep track of the presence
        // of ]]> in text data. The sequence ]]> is forbidden to appear as-is.
        //
        let { i: start, forbiddenState } = this;
        const { chunk, textHandler: handler } = this;
        // eslint-disable-next-line no-labels, no-restricted-syntax
        scanLoop: 
        // eslint-disable-next-line no-constant-condition
        while (true) {
            switch (this.getCode()) {
                case LESS: {
                    this.state = S_OPEN_WAKA;
                    if (handler !== undefined) {
                        const { text } = this;
                        const slice = chunk.slice(start, this.prevI);
                        if (text.length !== 0) {
                            handler(text + slice);
                            this.text = "";
                        }
                        else if (slice.length !== 0) {
                            handler(slice);
                        }
                    }
                    forbiddenState = FORBIDDEN_START;
                    // eslint-disable-next-line no-labels
                    break scanLoop;
                }
                case AMP:
                    this.state = S_ENTITY;
                    this.entityReturnState = S_TEXT;
                    if (handler !== undefined) {
                        this.text += chunk.slice(start, this.prevI);
                    }
                    forbiddenState = FORBIDDEN_START;
                    // eslint-disable-next-line no-labels
                    break scanLoop;
                case CLOSE_BRACKET:
                    switch (forbiddenState) {
                        case FORBIDDEN_START:
                            forbiddenState = FORBIDDEN_BRACKET;
                            break;
                        case FORBIDDEN_BRACKET:
                            forbiddenState = FORBIDDEN_BRACKET_BRACKET;
                            break;
                        case FORBIDDEN_BRACKET_BRACKET:
                            break;
                        default:
                            throw new Error("impossible state");
                    }
                    break;
                case GREATER:
                    if (forbiddenState === FORBIDDEN_BRACKET_BRACKET) {
                        this.fail("the string \"]]>\" is disallowed in char data.");
                    }
                    forbiddenState = FORBIDDEN_START;
                    break;
                case NL_LIKE:
                    if (handler !== undefined) {
                        this.text += `${chunk.slice(start, this.prevI)}\n`;
                    }
                    start = this.i;
                    forbiddenState = FORBIDDEN_START;
                    break;
                case EOC:
                    if (handler !== undefined) {
                        this.text += chunk.slice(start);
                    }
                    // eslint-disable-next-line no-labels
                    break scanLoop;
                default:
                    forbiddenState = FORBIDDEN_START;
            }
        }
        this.forbiddenState = forbiddenState;
    }
    handleTextOutsideRoot() {
        // This is essentially a specialized version of captureTo which is optimized
        // for a specialized task. We keep track of the presence of non-space
        // characters in the text since these are errors when appearing outside the
        // document root element.
        let { i: start } = this;
        const { chunk, textHandler: handler } = this;
        let nonSpace = false;
        // eslint-disable-next-line no-labels, no-restricted-syntax
        outRootLoop: 
        // eslint-disable-next-line no-constant-condition
        while (true) {
            const code = this.getCode();
            switch (code) {
                case LESS: {
                    this.state = S_OPEN_WAKA;
                    if (handler !== undefined) {
                        const { text } = this;
                        const slice = chunk.slice(start, this.prevI);
                        if (text.length !== 0) {
                            handler(text + slice);
                            this.text = "";
                        }
                        else if (slice.length !== 0) {
                            handler(slice);
                        }
                    }
                    // eslint-disable-next-line no-labels
                    break outRootLoop;
                }
                case AMP:
                    this.state = S_ENTITY;
                    this.entityReturnState = S_TEXT;
                    if (handler !== undefined) {
                        this.text += chunk.slice(start, this.prevI);
                    }
                    nonSpace = true;
                    // eslint-disable-next-line no-labels
                    break outRootLoop;
                case NL_LIKE:
                    if (handler !== undefined) {
                        this.text += `${chunk.slice(start, this.prevI)}\n`;
                    }
                    start = this.i;
                    break;
                case EOC:
                    if (handler !== undefined) {
                        this.text += chunk.slice(start);
                    }
                    // eslint-disable-next-line no-labels
                    break outRootLoop;
                default:
                    if (!isS(code)) {
                        nonSpace = true;
                    }
            }
        }
        if (!nonSpace) {
            return;
        }
        // We use the reportedTextBeforeRoot and reportedTextAfterRoot flags
        // to avoid reporting errors for every single character that is out of
        // place.
        if (!this.sawRoot && !this.reportedTextBeforeRoot) {
            this.fail("text data outside of root node.");
            this.reportedTextBeforeRoot = true;
        }
        if (this.closedRoot && !this.reportedTextAfterRoot) {
            this.fail("text data outside of root node.");
            this.reportedTextAfterRoot = true;
        }
    }
    pushAttribNS(name, value) {
        var _a;
        const { prefix, local } = this.qname(name);
        const attr = { name, prefix, local, value };
        this.attribList.push(attr);
        (_a = this.attributeHandler) === null || _a === void 0 ? void 0 : _a.call(this, attr);
        if (prefix === "xmlns") {
            const trimmed = value.trim();
            if (this.currentXMLVersion === "1.0" && trimmed === "") {
                this.fail("invalid attempt to undefine prefix in XML 1.0");
            }
            this.topNS[local] = trimmed;
            nsPairCheck(this, local, trimmed);
        }
        else if (name === "xmlns") {
            const trimmed = value.trim();
            this.topNS[""] = trimmed;
            nsPairCheck(this, "", trimmed);
        }
    }
    pushAttribPlain(name, value) {
        var _a;
        const attr = { name, value };
        this.attribList.push(attr);
        (_a = this.attributeHandler) === null || _a === void 0 ? void 0 : _a.call(this, attr);
    }
    /**
     * End parsing. This performs final well-formedness checks and resets the
     * parser to a clean state.
     *
     * @returns this
     */
    end() {
        var _a, _b;
        if (!this.sawRoot) {
            this.fail("document must contain a root element.");
        }
        const { tags } = this;
        while (tags.length > 0) {
            const tag = tags.pop();
            this.fail(`unclosed tag: ${tag.name}`);
        }
        if ((this.state !== S_BEGIN) && (this.state !== S_TEXT)) {
            this.fail("unexpected end.");
        }
        const { text } = this;
        if (text.length !== 0) {
            (_a = this.textHandler) === null || _a === void 0 ? void 0 : _a.call(this, text);
            this.text = "";
        }
        this._closed = true;
        (_b = this.endHandler) === null || _b === void 0 ? void 0 : _b.call(this);
        this._init();
        return this;
    }
    /**
     * Resolve a namespace prefix.
     *
     * @param prefix The prefix to resolve.
     *
     * @returns The namespace URI or ``undefined`` if the prefix is not defined.
     */
    resolve(prefix) {
        var _a, _b;
        let uri = this.topNS[prefix];
        if (uri !== undefined) {
            return uri;
        }
        const { tags } = this;
        for (let index = tags.length - 1; index >= 0; index--) {
            uri = tags[index].ns[prefix];
            if (uri !== undefined) {
                return uri;
            }
        }
        uri = this.ns[prefix];
        if (uri !== undefined) {
            return uri;
        }
        return (_b = (_a = this.opt).resolvePrefix) === null || _b === void 0 ? void 0 : _b.call(_a, prefix);
    }
    /**
     * Parse a qname into its prefix and local name parts.
     *
     * @param name The name to parse
     *
     * @returns
     */
    qname(name) {
        // This is faster than using name.split(":").
        const colon = name.indexOf(":");
        if (colon === -1) {
            return { prefix: "", local: name };
        }
        const local = name.slice(colon + 1);
        const prefix = name.slice(0, colon);
        if (prefix === "" || local === "" || local.includes(":")) {
            this.fail(`malformed name: ${name}.`);
        }
        return { prefix, local };
    }
    processAttribsNS() {
        var _a;
        const { attribList } = this;
        const tag = this.tag;
        {
            // add namespace info to tag
            const { prefix, local } = this.qname(tag.name);
            tag.prefix = prefix;
            tag.local = local;
            const uri = tag.uri = (_a = this.resolve(prefix)) !== null && _a !== void 0 ? _a : "";
            if (prefix !== "") {
                if (prefix === "xmlns") {
                    this.fail("tags may not have \"xmlns\" as prefix.");
                }
                if (uri === "") {
                    this.fail(`unbound namespace prefix: ${JSON.stringify(prefix)}.`);
                    tag.uri = prefix;
                }
            }
        }
        if (attribList.length === 0) {
            return;
        }
        const { attributes } = tag;
        const seen = new Set();
        // Note: do not apply default ns to attributes:
        //   http://www.w3.org/TR/REC-xml-names/#defaulting
        for (const attr of attribList) {
            const { name, prefix, local } = attr;
            let uri;
            let eqname;
            if (prefix === "") {
                uri = name === "xmlns" ? XMLNS_NAMESPACE : "";
                eqname = name;
            }
            else {
                uri = this.resolve(prefix);
                // if there's any attributes with an undefined namespace,
                // then fail on them now.
                if (uri === undefined) {
                    this.fail(`unbound namespace prefix: ${JSON.stringify(prefix)}.`);
                    uri = prefix;
                }
                eqname = `{${uri}}${local}`;
            }
            if (seen.has(eqname)) {
                this.fail(`duplicate attribute: ${eqname}.`);
            }
            seen.add(eqname);
            attr.uri = uri;
            attributes[name] = attr;
        }
        this.attribList = [];
    }
    processAttribsPlain() {
        const { attribList } = this;
        // eslint-disable-next-line prefer-destructuring
        const attributes = this.tag.attributes;
        for (const { name, value } of attribList) {
            if (attributes[name] !== undefined) {
                this.fail(`duplicate attribute: ${name}.`);
            }
            attributes[name] = value;
        }
        this.attribList = [];
    }
    /**
     * Handle a complete open tag. This parser code calls this once it has seen
     * the whole tag. This method checks for well-formeness and then emits
     * ``onopentag``.
     */
    openTag() {
        var _a;
        this.processAttribs();
        const { tags } = this;
        const tag = this.tag;
        tag.isSelfClosing = false;
        // There cannot be any pending text here due to the onopentagstart that was
        // necessarily emitted before we get here. So we do not check text.
        (_a = this.openTagHandler) === null || _a === void 0 ? void 0 : _a.call(this, tag);
        tags.push(tag);
        this.state = S_TEXT;
        this.name = "";
    }
    /**
     * Handle a complete self-closing tag. This parser code calls this once it has
     * seen the whole tag. This method checks for well-formeness and then emits
     * ``onopentag`` and ``onclosetag``.
     */
    openSelfClosingTag() {
        var _a, _b, _c;
        this.processAttribs();
        const { tags } = this;
        const tag = this.tag;
        tag.isSelfClosing = true;
        // There cannot be any pending text here due to the onopentagstart that was
        // necessarily emitted before we get here. So we do not check text.
        (_a = this.openTagHandler) === null || _a === void 0 ? void 0 : _a.call(this, tag);
        (_b = this.closeTagHandler) === null || _b === void 0 ? void 0 : _b.call(this, tag);
        const top = this.tag = (_c = tags[tags.length - 1]) !== null && _c !== void 0 ? _c : null;
        if (top === null) {
            this.closedRoot = true;
        }
        this.state = S_TEXT;
        this.name = "";
    }
    /**
     * Handle a complete close tag. This parser code calls this once it has seen
     * the whole tag. This method checks for well-formeness and then emits
     * ``onclosetag``.
     */
    closeTag() {
        const { tags, name } = this;
        // Our state after this will be S_TEXT, no matter what, and we can clear
        // tagName now.
        this.state = S_TEXT;
        this.name = "";
        if (name === "") {
            this.fail("weird empty close tag.");
            this.text += "</>";
            return;
        }
        const handler = this.closeTagHandler;
        let l = tags.length;
        while (l-- > 0) {
            const tag = this.tag = tags.pop();
            this.topNS = tag.ns;
            handler === null || handler === void 0 ? void 0 : handler(tag);
            if (tag.name === name) {
                break;
            }
            this.fail("unexpected close tag.");
        }
        if (l === 0) {
            this.closedRoot = true;
        }
        else if (l < 0) {
            this.fail(`unmatched closing tag: ${name}.`);
            this.text += `</${name}>`;
        }
    }
    /**
     * Resolves an entity. Makes any necessary well-formedness checks.
     *
     * @param entity The entity to resolve.
     *
     * @returns The parsed entity.
     */
    parseEntity(entity) {
        // startsWith would be significantly slower for this test.
        if (entity[0] !== "#") {
            const defined = this.ENTITIES[entity];
            if (defined !== undefined) {
                return defined;
            }
            this.fail(this.isName(entity) ? "undefined entity." :
                "disallowed character in entity name.");
            return `&${entity};`;
        }
        let num = NaN;
        if (entity[1] === "x" && /^#x[0-9a-f]+$/i.test(entity)) {
            num = parseInt(entity.slice(2), 16);
        }
        else if (/^#[0-9]+$/.test(entity)) {
            num = parseInt(entity.slice(1), 10);
        }
        // The character reference is required to match the CHAR production.
        if (!this.isChar(num)) {
            this.fail("malformed character entity.");
            return `&${entity};`;
        }
        return String.fromCodePoint(num);
    }
}
exports.SaxesParser = SaxesParser;
//# sourceMappingURL=saxes.js.map

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