blob: 0869d6b56115176bca5885a4de03beac23f8f7fd (
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
44
45
46
47
48
49
50
51
|
/*
* Copyright (c) 2010 Remko Tronçon
* Licensed under the GNU General Public License v3.
* See Documentation/Licenses/GPLv3.txt for more information.
*/
#include <Swiften/Compress/ZLibCodecompressor.h>
#include <cassert>
#include <string.h>
#include <Swiften/Compress/ZLibException.h>
namespace Swift {
static const int CHUNK_SIZE = 1024; // If you change this, also change the unittest
ZLibCodecompressor::ZLibCodecompressor() {
memset(&stream_, 0, sizeof(z_stream));
stream_.zalloc = Z_NULL;
stream_.zfree = Z_NULL;
stream_.opaque = Z_NULL;
}
ZLibCodecompressor::~ZLibCodecompressor() {
}
SafeByteArray ZLibCodecompressor::process(const SafeByteArray& input) {
SafeByteArray output;
stream_.avail_in = input.size();
stream_.next_in = reinterpret_cast<Bytef*>(const_cast<unsigned char*>(vecptr(input)));
int outputPosition = 0;
do {
output.resize(outputPosition + CHUNK_SIZE);
stream_.avail_out = CHUNK_SIZE;
stream_.next_out = reinterpret_cast<Bytef*>(vecptr(output) + 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