zip-iterator
Version:
Extract contents from zip archive type using an iterator API using streams or paths. Use stream interface and pipe transforms to add decompression algorithms
62 lines • 2.31 kB
JavaScript
// From: https://github.com/bower/decompress-zip/blob/master/lib/structures.js
;
Object.defineProperty(exports, "__esModule", {
value: true
});
Object.defineProperty(exports, "default", {
enumerable: true,
get: function() {
return parseExternalFileAttributes;
}
});
function parseExternalFileAttributes(externalAttributes, platform) {
var types = {
// In theory, any of these could be set. Realistically, though, it will
// be regular, directory or symlink
1: 'namedpipe',
2: 'character',
4: 'directory',
6: 'block',
8: 'file',
10: 'symlink',
12: 'socket'
};
switch(platform){
case 3:
return {
platform: 'Unix',
type: types[externalAttributes >> 28 & 0x0f],
mode: externalAttributes >> 16 & 0xfff
};
// case 0: // MSDOS
default:
{
if (platform !== 0) {
console.warn("Possibly unsupported ZIP platform type, ".concat(platform));
}
var attribs = {
A: externalAttributes >> 5 & 0x01,
D: externalAttributes >> 4 & 0x01,
V: externalAttributes >> 3 & 0x01,
S: externalAttributes >> 2 & 0x01,
H: externalAttributes >> 1 & 0x01,
R: externalAttributes & 0x01
};
// With no better guidance we'll make the default permissions ugo+r
var mode = 292;
if (attribs.D) {
mode |= 73; // Set the execute bit
}
if (!attribs.R) {
mode |= 146; // Set the write bit
}
mode &= ~process.umask();
return {
platform: 'DOS',
type: attribs.D ? 'directory' : 'file',
mode: mode
};
}
}
}
/* CJS INTEROP */ if (exports.__esModule && exports.default) { try { Object.defineProperty(exports.default, '__esModule', { value: true }); for (var key in exports) { exports.default[key] = exports[key]; } } catch (_) {}; module.exports = exports.default; }