76 lines
2.9 KiB
JavaScript
76 lines
2.9 KiB
JavaScript
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"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.RowParser = void 0;
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const column_1 = require("./column");
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const Token_1 = require("./Token");
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const EMPTY_STRING = '';
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class RowParser {
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constructor(parserOptions) {
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this.parserOptions = parserOptions;
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this.columnParser = new column_1.ColumnParser(parserOptions);
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}
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static isEmptyRow(row) {
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return row.join(EMPTY_STRING).replace(/\s+/g, EMPTY_STRING) === EMPTY_STRING;
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}
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parse(scanner) {
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const { parserOptions } = this;
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const { hasMoreData } = scanner;
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const currentScanner = scanner;
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const columns = [];
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let currentToken = this.getStartToken(currentScanner, columns);
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while (currentToken) {
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if (Token_1.Token.isTokenRowDelimiter(currentToken)) {
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currentScanner.advancePastToken(currentToken);
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// if ends with CR and there is more data, keep unparsed due to possible
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// coming LF in CRLF
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if (!currentScanner.hasMoreCharacters &&
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Token_1.Token.isTokenCarriageReturn(currentToken, parserOptions) &&
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hasMoreData) {
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return null;
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}
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currentScanner.truncateToCursor();
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return columns;
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}
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if (!this.shouldSkipColumnParse(currentScanner, currentToken, columns)) {
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const item = this.columnParser.parse(currentScanner);
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if (item === null) {
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return null;
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}
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columns.push(item);
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}
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currentToken = currentScanner.nextNonSpaceToken;
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}
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if (!hasMoreData) {
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currentScanner.truncateToCursor();
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return columns;
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}
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return null;
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}
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getStartToken(scanner, columns) {
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const currentToken = scanner.nextNonSpaceToken;
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if (currentToken !== null && Token_1.Token.isTokenDelimiter(currentToken, this.parserOptions)) {
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columns.push('');
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return scanner.nextNonSpaceToken;
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}
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return currentToken;
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}
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shouldSkipColumnParse(scanner, currentToken, columns) {
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const { parserOptions } = this;
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if (Token_1.Token.isTokenDelimiter(currentToken, parserOptions)) {
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scanner.advancePastToken(currentToken);
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// if the delimiter is at the end of a line
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const nextToken = scanner.nextCharacterToken;
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if (!scanner.hasMoreCharacters || (nextToken !== null && Token_1.Token.isTokenRowDelimiter(nextToken))) {
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columns.push('');
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return true;
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}
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if (nextToken !== null && Token_1.Token.isTokenDelimiter(nextToken, parserOptions)) {
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columns.push('');
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return true;
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}
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}
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return false;
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}
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}
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exports.RowParser = RowParser;
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//# sourceMappingURL=RowParser.js.map
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