48 lines
1.1 KiB
JavaScript
48 lines
1.1 KiB
JavaScript
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"use strict";
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const anyIntersection = require("./anyIntersection");
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const fill = require("./fill");
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let Object_assign = Object.assign;
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if (typeof Object_assign !== "function") {
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Object_assign = function(target) {
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Array.prototype.slice.call(arguments, 1).forEach(function(obj) {
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Object.keys(obj).forEach(function(key) {
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target[key] = obj[key];
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});
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});
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return target;
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};
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}
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function assign(textPart, fragment) {
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const fragStart = fragment.start;
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const start = Math.max(fragment.start, textPart.start);
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const end = Math.min(fragment.end, textPart.end);
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return Object_assign({}, fragment, {
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start: start,
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end: end,
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text: fragment.text.slice(start - fragStart, end - fragStart)
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});
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}
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function merge(textParts, styleFragments) {
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const cleanText = styleFragments.map(fragment => fragment.text).join("");
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const allParts = textParts
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.concat(fill(textParts, cleanText))
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.sort((a, b) => a.start - b.start);
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return allParts.map(textPart => {
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textPart.fragments = styleFragments
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.filter(fragment => anyIntersection(textPart, fragment))
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.map(fragment => assign(textPart, fragment));
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return textPart;
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});
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}
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module.exports = merge;
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