On Monday, 4 April 2016 at 08:26:07 UTC, Thomas Brix Larsen wrote:
On Sunday, 3 April 2016 at 02:03:29 UTC, stunaep wrote:
I am trying to use the bzip2 bindings that are available on
code.dlang.org/packages, but I am having a really hard time
using it due to the pointers. It needs to be an array once
it's decompressed.
Here is what I have:
import std.stdio;
import bzlib;
void main(string[] args)
{
File f = File("./test.bz2");
ubyte[] data = new ubyte[f.size];
f.rawRead(data);
writeln(data);
ubyte* output;
uint avail_out;
bz_stream* stream = new bz_stream();
stream.avail_out = avail_out;
stream.next_out = output;
int init_error = BZ2_bzDecompressInit(stream, 0, 0);
int bzipresult = BZ2_bzDecompress(stream);
stream.avail_in = cast(uint) data.length;
stream.next_in = cast(ubyte*) data;
bzipresult = BZ2_bzDecompress(stream);
int read = stream.total_out_lo32;
BZ2_bzDecompressEnd(stream);
delete stream;
writeln(output);
}
It's not working at all so any help would be very much
appreciated.
You need to allocate the output array:
import std.stdio;
import bzlib;
void main(string[] args)
{
File f = File("./test.bz2");
auto data = new ubyte[](f.size);
f.rawRead(data);
writeln(data);
auto output = new ubyte[](4096);
scope stream = new bz_stream();
stream.avail_out = cast(uint)output.length;
stream.next_out = output.ptr;
int init_error = BZ2_bzDecompressInit(stream, 0, 0);
int bzipresult = BZ2_bzDecompress(stream);
stream.avail_in = cast(uint)data.length;
stream.next_in = data.ptr;
bzipresult = BZ2_bzDecompress(stream);
int read = stream.total_out_lo32;
BZ2_bzDecompressEnd(stream);
writeln(output);
}
Can you please explain what the scope keyword does and if there
is any benefit to using
"new byte[](size)" over "new byte[size]" with a 1D array?
