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fix: signed 13 and 32 bit ints (l and s formats)

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This commit is contained in:
Andrey Sidorov 2014-03-31 14:05:51 +11:00
parent a930aa4d13
commit 33005e8f76
1 changed files with 21 additions and 11 deletions
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32
lib/unpackstream.js
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@ -55,7 +55,7 @@ ReadFormatRequest.prototype.execute = function(bufferlist, tag1, tag2)
// maybe best approach is to wait all data required for format and then process fixed buffer
// TODO: byte order!!!
switch (arg) {
case 'C':
case 'C':
this.data.push(bufferlist.getbyte());
break;
case 'S':
@ -121,7 +121,7 @@ UnpackStream.prototype.unpackTo = function(destination, names_formats, callback)
{
var names = [];
var format = '';
for (var i=0; i < names_formats.length; ++i)
{
var off = 0;
@ -172,7 +172,7 @@ UnpackStream.prototype.resume = function()
}
UnpackStream.prototype.getbyte = function()
{
{
var res = 0;
var b = this.readlist[0];
if (this.offset + 1 < b.length)
@ -180,7 +180,7 @@ UnpackStream.prototype.getbyte = function()
res = b[this.offset];
this.offset++;
this.length--;
} else {
// last byte in current buffer, shift read list
@ -202,7 +202,7 @@ UnpackStream.prototype.pstr = function(str)
if (len == 0)
return; // nothing to write
var buf = new Buffer(len);
buf.write(str, 'binary');
buf.write(str, 'binary');
this.write_queue.push(buf);
}
*/
@ -211,7 +211,7 @@ UnpackStream.prototype.pstr = function(str)
UnpackStream.prototype.pack = function(format, args)
{
var packetlength = 0;
var arg = 0;
for (var i = 0; i < format.length; ++i)
{
@ -238,20 +238,30 @@ UnpackStream.prototype.pack = function(format, args)
{
switch(format[i])
{
case 'x':
case 'x':
buf[offset++] = 0;
break;
case 'C':
var n = args[arg++];
buf[offset++] = n;
break;
case 's': // TODO: implement signed INT16!!!
case 's':
var n = args[arg++];
buf.writeInt16LE(n, offset);
offset += 2;
break;
case 'S':
var n = args[arg++];
buf[offset++] = n & 0xff;
buf[offset++] = (n >> 8) & 0xff;
break;
case 'l': // TODO: implement signed INT32!!!
case 'l':
var n = args[arg++];
buf.writeInt32LE(n, offset);
offset += 4;
break;
case 'L':
var n = args[arg++];
buf[offset++] = n & 0xff;
@ -281,7 +291,7 @@ UnpackStream.prototype.pack = function(format, args)
for (; c < len; ++c)
buf[offset++] = 0;
break;
}
}
}
this.write_queue.push(buf);
this.write_length += buf.length;
@ -290,7 +300,7 @@ UnpackStream.prototype.pack = function(format, args)
UnpackStream.prototype.flush = function(stream)
{
// TODO: measure performance benefit of
// TODO: measure performance benefit of
// creating and writing one big concatenated buffer
// TODO: check write result