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/*
* barrier -- mouse and keyboard sharing utility
* Copyright (C) 2012-2016 Symless Ltd.
* Copyright (C) 2004 Chris Schoeneman
*
* This package is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* found in the file LICENSE that should have accompanied this file.
*
* This package 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 program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "barrier/IClipboard.h"
#include "common/stdvector.h"
//
// IClipboard
//
void
IClipboard::unmarshall(IClipboard* clipboard, const String& data, Time time)
{
assert(clipboard != NULL);
const char* index = data.data();
if (clipboard->open(time)) {
// clear existing data
clipboard->empty();
// read the number of formats
const UInt32 numFormats = readUInt32(index);
index += 4;
// read each format
for (UInt32 i = 0; i < numFormats; ++i) {
// get the format id
IClipboard::EFormat format =
static_cast<IClipboard::EFormat>(readUInt32(index));
index += 4;
// get the size of the format data
UInt32 size = readUInt32(index);
index += 4;
// save the data if it's a known format. if either the client
// or server supports more clipboard formats than the other
// then one of them will get a format >= kNumFormats here.
if (format <IClipboard::kNumFormats) {
clipboard->add(format, String(index, size));
}
index += size;
}
// done
clipboard->close();
}
}
String
IClipboard::marshall(const IClipboard* clipboard)
{
// return data format:
// 4 bytes => number of formats included
// 4 bytes => format enum
// 4 bytes => clipboard data size n
// n bytes => clipboard data
// back to the second 4 bytes if there is another format
assert(clipboard != NULL);
String data;
std::vector<String> formatData;
formatData.resize(IClipboard::kNumFormats);
// FIXME -- use current time
if (clipboard->open(0)) {
// compute size of marshalled data
UInt32 size = 4;
UInt32 numFormats = 0;
for (UInt32 format = 0; format != IClipboard::kNumFormats; ++format) {
if (clipboard->has(static_cast<IClipboard::EFormat>(format))) {
++numFormats;
formatData[format] =
clipboard->get(static_cast<IClipboard::EFormat>(format));
size += 4 + 4 + (UInt32)formatData[format].size();
}
}
// allocate space
data.reserve(size);
// marshall the data
writeUInt32(&data, numFormats);
for (UInt32 format = 0; format != IClipboard::kNumFormats; ++format) {
if (clipboard->has(static_cast<IClipboard::EFormat>(format))) {
writeUInt32(&data, format);
writeUInt32(&data, (UInt32)formatData[format].size());
data += formatData[format];
}
}
clipboard->close();
}
return data;
}
bool
IClipboard::copy(IClipboard* dst, const IClipboard* src)
{
assert(dst != NULL);
assert(src != NULL);
return copy(dst, src, src->getTime());
}
bool
IClipboard::copy(IClipboard* dst, const IClipboard* src, Time time)
{
assert(dst != NULL);
assert(src != NULL);
bool success = false;
if (src->open(time)) {
if (dst->open(time)) {
if (dst->empty()) {
for (SInt32 format = 0;
format != IClipboard::kNumFormats; ++format) {
IClipboard::EFormat eFormat = (IClipboard::EFormat)format;
if (src->has(eFormat)) {
dst->add(eFormat, src->get(eFormat));
}
}
success = true;
}
dst->close();
}
src->close();
}
return success;
}
UInt32
IClipboard::readUInt32(const char* buf)
{
const unsigned char* ubuf = reinterpret_cast<const unsigned char*>(buf);
return (static_cast<UInt32>(ubuf[0]) << 24) |
(static_cast<UInt32>(ubuf[1]) << 16) |
(static_cast<UInt32>(ubuf[2]) << 8) |
static_cast<UInt32>(ubuf[3]);
}
void
IClipboard::writeUInt32(String* buf, UInt32 v)
{
*buf += static_cast<UInt8>((v >> 24) & 0xff);
*buf += static_cast<UInt8>((v >> 16) & 0xff);
*buf += static_cast<UInt8>((v >> 8) & 0xff);
*buf += static_cast<UInt8>( v & 0xff);
}
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