57 lines
2.3 KiB
JavaScript
57 lines
2.3 KiB
JavaScript
/* [MS-CFB] 2.6.1 Compound File Directory Entry */
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function read_directory(dir_start/*:number*/, sector_list/*:SectorList*/, sectors/*:Array<RawBytes>*/, Paths/*:Array<string>*/, nmfs, files, FileIndex, mini) {
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var minifat_store = 0, pl = (Paths.length?2:0);
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var sector = sector_list[dir_start].data;
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var i = 0, namelen = 0, name;
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for(; i < sector.length; i+= 128) {
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var blob/*:CFBlob*/ = /*::(*/sector.slice(i, i+128)/*:: :any)*/;
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prep_blob(blob, 64);
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namelen = blob.read_shift(2);
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name = __utf16le(blob,0,namelen-pl);
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Paths.push(name);
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var o/*:CFBEntry*/ = ({
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name: name,
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type: blob.read_shift(1),
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color: blob.read_shift(1),
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L: blob.read_shift(4, 'i'),
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R: blob.read_shift(4, 'i'),
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C: blob.read_shift(4, 'i'),
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clsid: blob.read_shift(16),
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state: blob.read_shift(4, 'i'),
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start: 0,
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size: 0
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});
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var ctime/*:number*/ = blob.read_shift(2) + blob.read_shift(2) + blob.read_shift(2) + blob.read_shift(2);
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if(ctime !== 0) o.ct = read_date(blob, blob.l-8);
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var mtime/*:number*/ = blob.read_shift(2) + blob.read_shift(2) + blob.read_shift(2) + blob.read_shift(2);
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if(mtime !== 0) o.mt = read_date(blob, blob.l-8);
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o.start = blob.read_shift(4, 'i');
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o.size = blob.read_shift(4, 'i');
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if(o.size < 0 && o.start < 0) { o.size = o.type = 0; o.start = ENDOFCHAIN; o.name = ""; }
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if(o.type === 5) { /* root */
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minifat_store = o.start;
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if(nmfs > 0 && minifat_store !== ENDOFCHAIN) sector_list[minifat_store].name = "!StreamData";
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/*minifat_size = o.size;*/
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} else if(o.size >= 4096 /* MSCSZ */) {
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o.storage = 'fat';
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if(sector_list[o.start] === undefined) sector_list[o.start] = get_sector_list(sectors, o.start, sector_list.fat_addrs, sector_list.ssz);
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sector_list[o.start].name = o.name;
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o.content = (sector_list[o.start].data.slice(0,o.size)/*:any*/);
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} else {
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o.storage = 'minifat';
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if(o.size < 0) o.size = 0;
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else if(minifat_store !== ENDOFCHAIN && o.start !== ENDOFCHAIN && sector_list[minifat_store]) {
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o.content = get_mfat_entry(o, sector_list[minifat_store].data, (sector_list[mini]||{}).data);
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}
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}
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if(o.content) prep_blob(o.content, 0);
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files[name] = o;
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FileIndex.push(o);
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}
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}
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function read_date(blob/*:RawBytes|CFBlob*/, offset/*:number*/)/*:Date*/ {
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return new Date(( ( (__readUInt32LE(blob,offset+4)/1e7)*Math.pow(2,32)+__readUInt32LE(blob,offset)/1e7 ) - 11644473600)*1000);
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}
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