source: trunk/synergy/lib/platform/CPMClipboardAnyTextConverter.cpp

/*
 * synergy -- mouse and keyboard sharing utility
 * Copyright (C) 2002 Chris Schoeneman
 * Copyright (C) 2006 Knut St. Osmundsen
 *
 * 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 COPYING 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.
 */

#include "CPMClipboardAnyTextConverter.h"
#include "CLog.h"

//
// CPMClipboardAnyTextConverter
//

CPMClipboardAnyTextConverter::CPMClipboardAnyTextConverter()
{
        // do nothing
}

CPMClipboardAnyTextConverter::~CPMClipboardAnyTextConverter()
{
        // do nothing
}

IClipboard::EFormat
CPMClipboardAnyTextConverter::getFormat() const
{
        return IClipboard::kText;
}
ULONG
CPMClipboardAnyTextConverter::getPMFormatInfo() const
{
    return CFI_POINTER;
}

ULONG
CPMClipboardAnyTextConverter::fromIClipboard(const CString& data) const
{
        // convert linefeeds and then convert to desired encoding
        CString text = doFromIClipboard(convertLinefeedToPM(data));
        UInt32 cb = text.size();

        // copy to memory handle
    PVOID pv = NULL;
    APIRET rc = DosAllocSharedMem(&pv, NULL, cb + 1, PAG_READ | PAG_WRITE | PAG_COMMIT | OBJ_GETTABLE | OBJ_GIVEABLE);
    if (rc == NO_ERROR) {
                const char *psz = text.c_str();
LOG((CLOG_DEBUG "fromIClipboard: psz='%s' cb=%d strlen=%d\n", psz, cb, strlen(psz)));
        return (ULONG)memcpy(pv, psz, cb);
    }
    return 0;
}

void
CPMClipboardAnyTextConverter::freePMData(ULONG ulPMData) const
{
    DosFreeMem((PVOID)ulPMData);
}

CString
CPMClipboardAnyTextConverter::toIClipboard(ULONG data) const
{
        // convert text
    const char *psz = (const char *)data;
LOG((CLOG_DEBUG "toIClipboard: psz='%s' strlen=%d\n", psz, strlen(psz)));
        CString raw = CString(psz);
LOG((CLOG_DEBUG "toIClipboard: raw='%s'\n", raw.c_str()));
        CString text = doToIClipboard(raw);
LOG((CLOG_DEBUG "toIClipboard: text='%s'\n", text.c_str()));

        // convert newlines
        return convertLinefeedToUnix(text);
}

CString
CPMClipboardAnyTextConverter::convertLinefeedToPM(const CString& src) const
{
        // note -- we assume src is a valid UTF-8 string    L

        // 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
CPMClipboardAnyTextConverter::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;
}