blob: a14f09d0d663efea804bf759460fbacc499424bf (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
|
#include "Swiften/Compress/ZLibCodecompressor.h"
#include <cassert>
#include "Swiften/Compress/ZLibException.h"
namespace Swift {
static const int CHUNK_SIZE = 1024; // If you change this, also change the unittest
ZLibCodecompressor::ZLibCodecompressor() {
stream_.zalloc = Z_NULL;
stream_.zfree = Z_NULL;
stream_.opaque = Z_NULL;
}
ZLibCodecompressor::~ZLibCodecompressor() {
}
ByteArray ZLibCodecompressor::process(const ByteArray& input) {
ByteArray output;
stream_.avail_in = input.getSize();
stream_.next_in = reinterpret_cast<Bytef*>(const_cast<char*>(input.getData()));
int outputPosition = 0;
do {
output.resize(outputPosition + CHUNK_SIZE);
stream_.avail_out = CHUNK_SIZE;
stream_.next_out = reinterpret_cast<Bytef*>(output.getData() + outputPosition);
int result = processZStream();
if (result != Z_OK && result != Z_BUF_ERROR) {
throw ZLibException(/* stream_.msg */);
}
outputPosition += CHUNK_SIZE;
}
while (stream_.avail_out == 0);
if (stream_.avail_in != 0) {
throw ZLibException();
}
output.resize(outputPosition - stream_.avail_out);
return output;
}
}
|
Swift