mirror of
https://github.com/kasmtech/KasmVNC.git
synced 2024-11-28 11:04:12 +01:00
105 lines
2.5 KiB
C++
105 lines
2.5 KiB
C++
/* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
|
|
*
|
|
* This is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This software is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this software; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
|
|
* USA.
|
|
*/
|
|
|
|
#include <rdr/HexOutStream.h>
|
|
#include <rdr/Exception.h>
|
|
|
|
using namespace rdr;
|
|
|
|
const int DEFAULT_BUF_LEN = 16384;
|
|
|
|
static inline size_t min(size_t a, size_t b) {return a<b ? a : b;}
|
|
|
|
HexOutStream::HexOutStream(OutStream& os)
|
|
: out_stream(os), offset(0), bufSize(DEFAULT_BUF_LEN)
|
|
{
|
|
if (bufSize % 2)
|
|
bufSize--;
|
|
ptr = start = new U8[bufSize];
|
|
end = start + bufSize;
|
|
}
|
|
|
|
HexOutStream::~HexOutStream() {
|
|
delete [] start;
|
|
}
|
|
|
|
|
|
char HexOutStream::intToHex(int i) {
|
|
if ((i>=0) && (i<=9))
|
|
return '0'+i;
|
|
else if ((i>=10) && (i<=15))
|
|
return 'a'+(i-10);
|
|
else
|
|
throw rdr::Exception("intToHex failed");
|
|
}
|
|
|
|
char* HexOutStream::binToHexStr(const char* data, size_t length) {
|
|
char* buffer = new char[length*2+1];
|
|
for (size_t i=0; i<length; i++) {
|
|
buffer[i*2] = intToHex((data[i] >> 4) & 15);
|
|
buffer[i*2+1] = intToHex((data[i] & 15));
|
|
if (!buffer[i*2] || !buffer[i*2+1]) {
|
|
delete [] buffer;
|
|
return 0;
|
|
}
|
|
}
|
|
buffer[length*2] = 0;
|
|
return buffer;
|
|
}
|
|
|
|
|
|
void
|
|
HexOutStream::writeBuffer() {
|
|
U8* pos = start;
|
|
while (pos != ptr) {
|
|
out_stream.check(2);
|
|
U8* optr = out_stream.getptr();
|
|
U8* oend = out_stream.getend();
|
|
size_t length = min(ptr-pos, (oend-optr)/2);
|
|
|
|
for (size_t i=0; i<length; i++) {
|
|
optr[i*2] = intToHex((pos[i] >> 4) & 0xf);
|
|
optr[i*2+1] = intToHex(pos[i] & 0xf);
|
|
}
|
|
|
|
out_stream.setptr(optr + length*2);
|
|
pos += length;
|
|
}
|
|
offset += ptr - start;
|
|
ptr = start;
|
|
}
|
|
|
|
size_t HexOutStream::length()
|
|
{
|
|
return offset + ptr - start;
|
|
}
|
|
|
|
void
|
|
HexOutStream::flush() {
|
|
writeBuffer();
|
|
out_stream.flush();
|
|
}
|
|
|
|
void HexOutStream::overrun(size_t needed) {
|
|
if (needed > bufSize)
|
|
throw Exception("HexOutStream overrun: buffer size exceeded");
|
|
|
|
writeBuffer();
|
|
}
|
|
|