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Added functionality to read UTF-8 entry name from 0x7075 extra info #105

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Added functionality to read UTF-8 entry name from 0x7075 extra info #105

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23 changes: 23 additions & 0 deletions node_stream_zip.js
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Original file line number Diff line number Diff line change
Expand Up @@ -130,6 +130,7 @@ const consts = {
ID_IBM1: 0x0065,
ID_IBM2: 0x0066,
ID_POSZIP: 0x4690,
ID_UNICODE_PATH: 0x7075,

EF_ZIP64_OR_32: 0xffffffff,
EF_ZIP64_OR_16: 0xffff,
Expand Down Expand Up @@ -910,10 +911,24 @@ class ZipEntry {
if (consts.ID_ZIP64 === signature) {
this.parseZip64Extra(data, offset, size);
}
if (consts.ID_UNICODE_PATH === signature) {
this.parseUnicodeFileName(data, offset, size);
}
offset += size;
}
}

parseUnicodeFileName(data, offset, length) {
readUInt8(data, offset) // version
offset += 1
length -= 1
var nameCRC32 = readUInt32LE(data, offset)
offset += 4
length -= 4
const nameData = data.slice(offset, (offset += length));
this.name = nameData.toString('utf-8')
}

parseZip64Extra(data, offset, length) {
if (length >= 8 && this.size === consts.EF_ZIP64_OR_32) {
this.size = readUInt64LE(data, offset);
Expand Down Expand Up @@ -1207,4 +1222,12 @@ function readUInt64LE(buffer, offset) {
return buffer.readUInt32LE(offset + 4) * 0x0000000100000000 + buffer.readUInt32LE(offset);
}

function readUInt32LE(buffer, offset) {
return buffer.readUInt32LE(offset);
}

function readUInt8(buffer, offset) {
return buffer.readUInt8(offset)
}

module.exports = StreamZip;