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80 lines
1.9 KiB
JavaScript

'use strict';
const {
NODE_END,
ATTRIBUTE_NODE,
CDATA_SECTION_NODE,
COMMENT_NODE,
DOCUMENT_TYPE_NODE,
ELEMENT_NODE,
TEXT_NODE
} = require('./constants.js');
const {END, NEXT, VALUE} = require('./symbols.js');
const {getEnd} = require('./utils.js');
const loopSegment = ({[NEXT]: next, [END]: end}, json) => {
while (next !== end) {
switch (next.nodeType) {
case ATTRIBUTE_NODE:
attrAsJSON(next, json);
break;
case TEXT_NODE:
case COMMENT_NODE:
case CDATA_SECTION_NODE:
characterDataAsJSON(next, json);
break;
case ELEMENT_NODE:
elementAsJSON(next, json);
next = getEnd(next);
break;
case DOCUMENT_TYPE_NODE:
documentTypeAsJSON(next, json);
break;
}
next = next[NEXT];
}
const last = json.length - 1;
const value = json[last];
if (typeof value === 'number' && value < 0)
json[last] += NODE_END;
else
json.push(NODE_END);
};
const attrAsJSON = (attr, json) => {
json.push(ATTRIBUTE_NODE, attr.name);
const value = attr[VALUE].trim();
if (value)
json.push(value);
};
exports.attrAsJSON = attrAsJSON;
const characterDataAsJSON = (node, json) => {
const value = node[VALUE];
if (value.trim())
json.push(node.nodeType, value);
};
exports.characterDataAsJSON = characterDataAsJSON;
const nonElementAsJSON = (node, json) => {
json.push(node.nodeType);
loopSegment(node, json);
};
exports.nonElementAsJSON = nonElementAsJSON;
const documentTypeAsJSON = ({name, publicId, systemId}, json) => {
json.push(DOCUMENT_TYPE_NODE, name);
if (publicId)
json.push(publicId);
if (systemId)
json.push(systemId);
};
exports.documentTypeAsJSON = documentTypeAsJSON;
const elementAsJSON = (element, json) => {
json.push(ELEMENT_NODE, element.localName);
loopSegment(element, json);
};
exports.elementAsJSON = elementAsJSON;