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35 lines
1.1 KiB
JavaScript
35 lines
1.1 KiB
JavaScript
'use strict';
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const debug = require("debug")("iso9660:parse:path-table");
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const roundEven = require("../../round-even");
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const parsePathTableRecord = require("./path-table-record");
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module.exports = function parsePathTable(buffer, sectorSize) {
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function roundToNextSector(position) {
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return Math.ceil(position / sectorSize) * sectorSize;
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}
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let records = [];
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let pos = 0;
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while (pos < buffer.length) {
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let recordIdentifierLength = buffer.readUInt8(pos);
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let recordLength = roundEven(recordIdentifierLength + 8);
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if (recordIdentifierLength === 0) {
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/* Reached the end of records for this section, throw away the remainder. */
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debug("Ran out of records, skipping to next sector...");
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pos = roundToNextSector(pos);
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} else {
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let parsedRecord = parsePathTableRecord(buffer.slice(pos, pos + recordLength), "L");
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debug(`Found: ${parsedRecord.identifier.filename}`);
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records.push(parsedRecord);
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pos += recordLength;
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}
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}
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return records;
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};
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