barrier/platform/CMSWindowsClipboardAnyTextConverter.cpp

132 lines
2.6 KiB
C++
Raw Normal View History

#include "CMSWindowsClipboardAnyTextConverter.h"
//
// CMSWindowsClipboardAnyTextConverter
//
CMSWindowsClipboardAnyTextConverter::CMSWindowsClipboardAnyTextConverter()
{
// do nothing
}
CMSWindowsClipboardAnyTextConverter::~CMSWindowsClipboardAnyTextConverter()
{
// do nothing
}
IClipboard::EFormat
CMSWindowsClipboardAnyTextConverter::getFormat() const
{
return IClipboard::kText;
}
HANDLE
CMSWindowsClipboardAnyTextConverter::fromIClipboard(const CString& data) const
{
// convert linefeeds and then convert to desired encoding
CString text = doFromIClipboard(convertLinefeedToWin32(data));
UInt32 size = text.size();
// copy to memory handle
HGLOBAL gData = GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, size);
if (gData != NULL) {
// get a pointer to the allocated memory
char* dst = (char*)GlobalLock(gData);
if (dst != NULL) {
memcpy(dst, text.data(), size);
GlobalUnlock(gData);
}
else {
GlobalFree(gData);
gData = NULL;
}
}
return gData;
}
CString
CMSWindowsClipboardAnyTextConverter::toIClipboard(HANDLE data) const
{
// get datator
const char* src = (const char*)GlobalLock(data);
UInt32 srcSize = (UInt32)GlobalSize(data);
if (src == NULL || srcSize <= 1) {
return CString();
}
// convert text
CString text = doToIClipboard(CString(src, srcSize));
// release handle
GlobalUnlock(data);
// convert newlines
return convertLinefeedToUnix(text);
}
CString
CMSWindowsClipboardAnyTextConverter::convertLinefeedToWin32(
const CString& src) const
{
// note -- we assume src is a valid UTF-8 string
// count newlines in string
UInt32 numNewlines = 0;
UInt32 n = src.size();
for (const char* scan = src.c_str(); n > 0; ++scan, --n) {
if (*scan == '\n') {
++numNewlines;
}
}
if (numNewlines == 0) {
return src;
}
// allocate new string
CString dst;
dst.reserve(src.size() + numNewlines);
// copy string, converting newlines
n = src.size();
for (const char* scan = src.c_str(); n > 0; ++scan, --n) {
if (scan[0] == '\n') {
dst += '\r';
}
dst += scan[0];
}
return dst;
}
CString
CMSWindowsClipboardAnyTextConverter::convertLinefeedToUnix(
const CString& src) const
{
// count newlines in string
UInt32 numNewlines = 0;
UInt32 n = src.size();
for (const char* scan = src.c_str(); n > 0; ++scan, --n) {
if (scan[0] == '\r' && scan[1] == '\n') {
++numNewlines;
}
}
if (numNewlines == 0) {
return src;
}
// allocate new string
CString dst;
dst.reserve(src.size());
// copy string, converting newlines
n = src.size();
for (const char* scan = src.c_str(); n > 0; ++scan, --n) {
if (scan[0] != '\r' || scan[1] != '\n') {
dst += scan[0];
}
}
return dst;
}