98 lines
2.6 KiB
JavaScript
98 lines
2.6 KiB
JavaScript
import { debug } from '../../util';
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import { STORAGE_TYPES } from './constants';
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import { Directory } from './directory';
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export function uint32ToDate(val) {
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// yyyyyyy m|mmmm ddddd|000hhhhh|00mmmmmm
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if (val) {
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var yearMonthDay = val & 0xffff;
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var hourMinute = val >> 16;
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var year = yearMonthDay >> 9;
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var month = (yearMonthDay & 0x01E0) >> 5;
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var day = yearMonthDay & 0x001F;
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var hour = hourMinute >> 8;
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var min = hourMinute & 0xff;
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return new Date(1900 + year, month - 1, day, hour, min);
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}
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return null;
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}
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export function dateToUint32(date) {
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// yyyyyyy m|mmmm ddddd|000hhhhh|00mmmmmm
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var val = 0;
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if (date) {
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var year = date.getYear() - 1900;
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var month = date.getMonth() + 1;
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var day = date.getDate();
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var hour = date.getHour();
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var min = date.getMinute();
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var yearMonthDay = year << 9 | month << 5 | day;
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var hourMinute = hour << 8 | min;
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val = hourMinute << 16 | yearMonthDay;
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}
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return val;
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}
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export function readFileName(block, offset, nameLength, caseBits) {
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var name = '';
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if (!(caseBits & 0x8000)) {
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caseBits = 0;
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}
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for (var idx = 0; idx < nameLength; idx++) {
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caseBits <<= 1;
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var char = String.fromCharCode(block.getUint8(offset + idx));
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name += caseBits & 0x8000 ? char.toLowerCase() : char;
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}
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return name;
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}
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export function writeFileName(block, offset, name) {
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var caseBits = 0;
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for (var idx = 0; idx < name.length; idx++) {
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caseBits <<= 1;
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var charCode = name.charCodeAt(idx);
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if (charCode > 0x60 && charCode < 0x7B) {
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caseBits |= 0x1;
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charCode -= 0x20;
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}
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block.setUint8(offset + idx, charCode);
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}
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return caseBits;
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}
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export function dumpDirectory(volume, dirEntry, depth) {
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var dir = new Directory(volume, dirEntry);
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dir.read();
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for (var idx = 0; idx < dir.entries.length; idx++) {
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var fileEntry = dir.entries[idx];
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if (fileEntry.storageType !== STORAGE_TYPES.DELETED) {
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debug(depth, fileEntry.name);
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if (fileEntry.storageType === STORAGE_TYPES.DIRECTORY) {
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dumpDirectory(volume, fileEntry, depth + ' ');
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}
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}
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}
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}
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export function dump(volume) {
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var vdh = volume.vdh();
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debug(vdh.name);
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for (var idx = 0; idx < vdh.entries.length; idx++) {
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var fileEntry = vdh.entries[idx];
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debug(fileEntry.name);
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if (fileEntry.storageType === STORAGE_TYPES.DIRECTORY) {
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dumpDirectory(volume, fileEntry, ' ');
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}
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}
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}
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