Refactor sentence scanning (#1213)
* Update tests * Update extractSentence implementation * Remove old extractSentence implementation * Optimize maps/sets
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toasted-nutbread
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@ -24,6 +24,20 @@
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class DocumentUtil {
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constructor() {
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this._transparentColorPattern = /rgba\s*\([^)]*,\s*0(?:\.0+)?\s*\)/;
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const quoteArray = [
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['「', '」'],
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['『', '』'],
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['\'', '\''],
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['"', '"']
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];
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this._terminatorSet = new Set(['…', '。', '．', '.', '？', '?', '！', '!']);
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this._startQuoteMap = new Map();
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this._endQuoteMap = new Map();
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for (const [char1, char2] of quoteArray) {
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this._startQuoteMap.set(char1, char2);
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this._endQuoteMap.set(char2, char1);
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}
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}
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getRangeFromPoint(x, y, deepContentScan) {
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@ -64,72 +78,79 @@ class DocumentUtil {
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}
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extractSentence(source, extent, layoutAwareScan) {
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const quotesFwd = {'「': '」', '『': '』', "'": "'", '"': '"'};
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const quotesBwd = {'」': '「', '』': '『', "'": "'", '"': '"'};
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const terminators = '…。．.？?！!';
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const terminatorSet = this._terminatorSet;
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const startQuoteMap = this._startQuoteMap;
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const endQuoteMap = this._endQuoteMap;
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const sourceLocal = source.clone();
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const position = sourceLocal.setStartOffset(extent, layoutAwareScan);
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sourceLocal.setEndOffset(extent * 2 - position, layoutAwareScan, true);
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const content = sourceLocal.text();
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// Scan text
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source = source.clone();
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const startLength = source.setStartOffset(extent, layoutAwareScan);
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const endLength = source.setEndOffset(extent * 2 - startLength, layoutAwareScan, true);
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const text = source.text();
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const textLength = text.length;
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const textEndAnchor = textLength - endLength;
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let pos1 = startLength;
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let pos2 = textEndAnchor;
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// Move backward
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let quoteStack = [];
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for (; pos1 > 0; --pos1) {
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const c = text[pos1 - 1];
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if (c === '\n') { break; }
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let startPos = 0;
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for (let i = position; i >= startPos; --i) {
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const c = content[i];
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if (c === '\n') {
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startPos = i + 1;
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if (quoteStack.length === 0 && terminatorSet.has(c)) {
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break;
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}
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if (quoteStack.length === 0 && (terminators.includes(c) || c in quotesFwd)) {
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startPos = i + 1;
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break;
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}
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if (quoteStack.length > 0 && c === quoteStack[0]) {
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quoteStack.pop();
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} else if (c in quotesBwd) {
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quoteStack.unshift(quotesBwd[c]);
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}
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}
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quoteStack = [];
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let endPos = content.length;
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for (let i = position; i <= endPos; ++i) {
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const c = content[i];
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if (c === '\n') {
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endPos = i + 1;
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break;
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}
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if (quoteStack.length === 0) {
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if (terminators.includes(c)) {
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endPos = i + 1;
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break;
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} else if (c in quotesBwd) {
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endPos = i;
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let otherQuote = startQuoteMap.get(c);
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if (typeof otherQuote !== 'undefined') {
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if (quoteStack.length === 0) {
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break;
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} else if (quoteStack[0] === c) {
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quoteStack.pop();
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}
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} else {
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otherQuote = endQuoteMap.get(c);
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if (typeof otherQuote !== 'undefined') {
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quoteStack.unshift(otherQuote);
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}
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}
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}
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if (quoteStack.length > 0 && c === quoteStack[0]) {
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quoteStack.pop();
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} else if (c in quotesFwd) {
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quoteStack.unshift(quotesFwd[c]);
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// Move forward
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quoteStack = [];
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for (; pos2 < textLength; ++pos2) {
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const c = text[pos2];
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if (c === '\n') { break; }
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if (quoteStack.length === 0 && terminatorSet.has(c)) {
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++pos2;
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break;
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}
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let otherQuote = endQuoteMap.get(c);
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if (typeof otherQuote !== 'undefined') {
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if (quoteStack.length === 0) {
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break;
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} else if (quoteStack[0] === c) {
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quoteStack.pop();
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}
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} else {
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otherQuote = startQuoteMap.get(c);
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if (typeof otherQuote !== 'undefined') {
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quoteStack.unshift(otherQuote);
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}
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}
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}
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const text = content.substring(startPos, endPos);
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const padding = text.length - text.replace(/^\s+/, '').length;
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// Trim whitespace
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for (; pos1 < startLength && this._isWhitespace(text[pos1]); ++pos1) { /* NOP */ }
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for (; pos2 > textEndAnchor && this._isWhitespace(text[pos2 - 1]); --pos2) { /* NOP */ }
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// Result
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return {
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text: text.trim(),
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offset: position - startPos - padding
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text: text.substring(pos1, pos2),
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offset: startLength - pos1
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};
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}
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@ -43,6 +43,54 @@
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<span>真白「心配してくださって、ありがとございます」</span>
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</div>
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<div
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class="test"
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data-test-type="scan"
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data-element-from-point-selector="span"
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data-caret-range-from-point-selector="span"
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data-start-node-selector="span"
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data-start-offset="16"
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data-end-node-selector="span"
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data-end-offset="16"
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data-result-type="TextSourceRange",
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data-sentence-extent="100"
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data-sentence="心配して「くださって」、ありがと「ございます」"
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>
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<span>真白「心配して「くださって」、ありがと「ございます」」</span>
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</div>
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<div
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class="test"
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data-test-type="scan"
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data-element-from-point-selector="span"
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data-caret-range-from-point-selector="span"
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data-start-node-selector="span"
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data-start-offset="4"
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data-end-node-selector="span"
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data-end-offset="4"
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data-result-type="TextSourceRange",
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data-sentence-extent="100"
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data-sentence="ありがとございます。"
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>
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<span>ありがとございます。ありがとございます。</span>
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</div>
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<div
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class="test"
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data-test-type="scan"
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data-element-from-point-selector="span"
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data-caret-range-from-point-selector="span"
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data-start-node-selector="span"
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data-start-offset="14"
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data-end-node-selector="span"
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data-end-offset="14"
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data-result-type="TextSourceRange",
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data-sentence-extent="100"
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data-sentence="ありがとございます。"
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>
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<span>ありがとございます。ありがとございます。</span>
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</div>
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<div
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class="test"
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data-test-type="scan"
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