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21 lines
696 B
JavaScript
21 lines
696 B
JavaScript
'use strict';
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const Promise = require("bluebird");
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const parsePathTable = require("../parse/path-table");
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module.exports = function readPathTable(image) {
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return Promise.try(() => {
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return image.getPrimaryVolumeDescriptor();
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}).then((primaryVolumeDescriptor) => {
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return Promise.try(() => {
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let start = primaryVolumeDescriptor.data.pathTableLocationL * primaryVolumeDescriptor.data.sectorSize;
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let end = start + primaryVolumeDescriptor.data.pathTableSize - 1;
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return image.readRange(start, end);
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}).then((buffer) => {
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return parsePathTable(buffer, primaryVolumeDescriptor.data.sectorSize);
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});
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});
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}
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