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Clipbrd.c
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Clipbrd.c
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/********************************************************\
|* *|
|* Program: WinVi *|
|* Author: Raphael Molle *|
|* Compiler: several *|
|* --------------------- -------------------------- *|
|* © Copyright 1994-2009 by Raphael Molle, Berlin *|
|* © Copyleft by GPL See file COPYING for more *|
|* info about terms of use *|
|* *|
\********************************************************/
/* revision log:
* 3-Dec-2000 first publication of source code
* 13-Mar-2003 clipboard paste with codepage conversion
* 15-Jul-2007 support for UTF-16 and UTF-8
* 1-Jan-2009 can now be compiled with VC++ 2008 Express
*/
#include <windows.h>
#include <memory.h>
#include <wchar.h>
#include <stdlib.h>
#include "winvi.h"
#include "page.h"
extern INT OemCodePage, AnsiCodePage;
CHAR BinaryFormat[] = "WinVi bin %lu:";
CHAR BinaryPart[24];
static VOID EbcdicConvert(char huge *dst, LPSTR src, INT n)
{
while (n--) {
INT orig = (BYTE)*src++;
INT mapped = MapEbcdicToAnsi[orig];
*dst++ = mapped != 127 ? mapped : orig;
}
}
extern DWORD MyGetVersion(VOID);
BOOL ClipboardCopy(void)
{ HGLOBAL hMem;
char huge *pMem;
LONG lSize;
BOOL WideCharConvert = FALSE;
UINT Codepage = 0;
/*prepare resources...*/
if (!SelectCount) {
Error(209);
return (FALSE);
}
if (!OpenClipboard(hwndMain)) {
ErrorBox(MB_ICONEXCLAMATION, 302);
return (FALSE);
}
lSize = SelectCount + sizeof(BinaryPart);
if (!(MyGetVersion() & 0x80000000U))
if (UtfEncoding || CharSet == CS_OEM || AnsiCodePage != CP_ACP) {
/*copy as wide chars...*/
Codepage = CharSet == CS_OEM ? OemCodePage : AnsiCodePage;
if (UtfEncoding != 16)
lSize <<= 1;
WideCharConvert = TRUE;
}
hMem = GlobalAlloc(GMEM_MOVEABLE | GMEM_ZEROINIT, lSize);
if (!hMem) {
CloseClipboard();
ErrorBox(MB_ICONEXCLAMATION, 304);
return (FALSE);
}
pMem = GlobalLock(hMem);
if (pMem == NULL) {
CloseClipboard();
GlobalFree(hMem);
ErrorBox(MB_ICONEXCLAMATION, 305);
return (FALSE);
}
/*copy into memory...*/
{ POSITION Pos;
ULONG Bytes = SelectCount;
UINT i;
BOOL NullbyteFound = FALSE;
Pos = SelectStart;
if (UtfEncoding && WideCharConvert) {
POSITION EndPos = Pos;
WCHAR *pw = (WCHAR *)pMem;
Advance(&EndPos, Bytes);
//if (CountBytes(&Pos) != 0 || (i = CharAndAdvance(&Pos)) == C_BOM)
i = CharAndAdvance(&Pos);
for (;;) {
if (ComparePos(&Pos, &EndPos) > 0)
break;
if (i == C_EOF) break;
if (i == C_CRLF) {
if ((char *)pw + 6 > pMem + lSize)
break;
*pw++ = '\r';
i = '\n';
}
if ((char *)pw + 4 > pMem + lSize)
break;
*pw++ = i;
i = CharAndAdvance(&Pos);
}
*pw = '\0';
} else while (Bytes) {
LPSTR p, pNull;
CharAt(&Pos); /*normalize position and enforce page load*/
i = Pos.p->Fill - Pos.i;
if (i > Bytes) i = (UINT)Bytes;
p = Pos.p->PageBuf + Pos.i;
if (!NullbyteFound && (pNull = _fmemchr(p, '\0', i)) != NULL) {
if (ErrorBox(MB_ICONINFORMATION|MB_OKCANCEL, 328) == IDCANCEL) {
CloseClipboard();
GlobalUnlock(hMem);
GlobalFree(hMem);
return (FALSE);
}
NullbyteFound = TRUE;
i = pNull - p + 1;
if (CharSet == CS_EBCDIC) EbcdicConvert(pMem, p, i);
else if (WideCharConvert) {
MultiByteToWideChar(Codepage, 0, p, i, (WCHAR*)pMem, i);
pMem += i;
} else hmemcpy(pMem, p, i);
pMem += i;
Bytes -= --i;
Pos.i += i;
i = wsprintf(BinaryPart, BinaryFormat, Bytes);
if (WideCharConvert) {
MultiByteToWideChar(Codepage, 0, BinaryPart, i,
(WCHAR*)pMem, i);
pMem += i;
} else hmemcpy(pMem, BinaryPart, i);
pMem += i;
continue;
}
if (CharSet == CS_EBCDIC)
EbcdicConvert(pMem, Pos.p->PageBuf + Pos.i, i);
else if (WideCharConvert) {
MultiByteToWideChar(Codepage, 0, Pos.p->PageBuf + Pos.i, i,
(WCHAR*)pMem, i);
if (CharSet == CS_OEM) {
extern WCHAR const MapLowOemToUtf16[33];
PWSTR pw = (WCHAR*)pMem;
INT j;
for (j=i; j>0; --j) {
if (*pw < ' ') {
switch (*pw) {
case '\0':
case '\t':
case '\n':
case '\r': break;
default: *pw = MapLowOemToUtf16[*pw];
}
}
++pw;
}
}
pMem += i;
} else hmemcpy(pMem, Pos.p->PageBuf + Pos.i, i);
pMem += i;
Bytes -= i;
Pos.i += i;
}
}
/*unlock...*/
GlobalUnlock(hMem);
/*clear previous clipboard contents...*/
if (!EmptyClipboard()) {
CloseClipboard();
GlobalFree(hMem);
ErrorBox(MB_ICONEXCLAMATION, 303);
return (FALSE);
}
/*finally, publish...*/
SetClipboardData(WideCharConvert ? CF_UNICODETEXT
: CharSet == CS_OEM ? CF_OEMTEXT
: CF_TEXT, hMem);
CloseClipboard();
CheckClipboard();
return (TRUE);
}
BOOL ClipboardCut(void)
{
if (!ClipboardCopy()) return (FALSE);
DeleteSelected(17);
GetXPos(&CurrCol);
ShowEditCaret();
return (TRUE);
}
BOOL ClipboardPaste(void)
{
HGLOBAL hMem = 0;
LPSTR lpMem;
UINT uFormat = CharSet == CS_OEM ? CF_OEMTEXT : CF_TEXT;
LONG lSize;
MODEENUM SaveMode;
BOOL FreeConversionMemory = FALSE;
if (IsViewOnly()) return(FALSE);
/*prepare resources...*/
if (!OpenClipboard(hwndMain)) {
ErrorBox(MB_ICONEXCLAMATION, 302);
return (FALSE);
}
/*first check for binary data containing null bytes...*/
if (UtfEncoding != 16 && (hMem = GetClipboardData(uFormat)) != 0) {
lSize = GlobalSize(hMem);
if ((lpMem = GlobalLock(hMem)) != NULL) {
LPSTR lp;
LONG lRemain;
lp = _fmemchr(lpMem, '\0', (size_t)lSize);
if (lp != NULL && (lp-lpMem+sizeof(BinaryPart)) <= (size_t)lSize
&& lp[1]==BinaryFormat[0]
&& _fmemchr(lp+1, '\0', lSize-(lp+1-lpMem)) != NULL
&& _fmemcmp(lp+1, BinaryFormat, 10) == 0) {
/*insert first part of null containing binary data...*/
SaveMode = Mode;
if (Mode != InsertMode && Mode != ReplaceMode) {
StartUndoSequence();
Mode = InsertMode;
}
if (SelectCount) DeleteSelected(17);
else EnterDeleteForUndo(&CurrPos, 0, 1); /*force new undo elem*/
Mode = SaveMode;
HideEditCaret();
if (*lpMem) InsertBuffer(lpMem, (UINT)(lp-lpMem), 0);
lRemain = strtoul(lp+11, &lp, 10);
if (*lp != ':') lSize = 0;
else {
if (lSize >= (lp - lpMem) + lRemain) lSize = lRemain;
else lSize = 0;
lpMem = lp + 1;
}
if (lSize) InsertBuffer(lpMem, (UINT)lSize, 1);
GetXPos(&CurrCol);
ShowEditCaret();
/*clean up...*/
GlobalUnlock(hMem);
CloseClipboard();
return (TRUE);
}
GlobalUnlock(hMem);
hMem = 0;
}
}
/*then, if running on Windows NT, try to get wide chars...*/
if (!(MyGetVersion() & 0x80000000U) && CharSet != CS_EBCDIC) {
UINT Cp;
if (UtfEncoding == 8)
Cp = CP_UTF8;
else if (CharSet == CS_ANSI)
Cp = AnsiCodePage;
else Cp = OemCodePage;
if (Cp) {
HGLOBAL hWideCharMem = GetClipboardData(CF_UNICODETEXT);
WCHAR *lpWideCharMem;
if (hWideCharMem) {
lSize = GlobalSize(hWideCharMem);
lpWideCharMem = GlobalLock(hWideCharMem);
if (lpWideCharMem != NULL) {
INT nSizeRequired;
PWCHAR wp;
lSize >>= 1;
wp = wmemchr(lpWideCharMem, '\0', lSize);
if (wp != NULL) lSize = wp - lpWideCharMem;
if (UtfEncoding == 16) {
lSize <<= 1;
if (UtfLsbFirst) {
hMem = hWideCharMem;
lpMem = (LPSTR)lpWideCharMem;
} else {
hMem = GlobalAlloc(GMEM_MOVEABLE, lSize);
if (hMem) {
lpMem = GlobalLock(hMem);
if (lpMem != NULL) {
INT i = 0;
while ((i += 2) <= lSize) {
lpMem[i-2] = *lpWideCharMem >> 8;
lpMem[i-1] = *lpWideCharMem++ & 255;
}
FreeConversionMemory = TRUE;
} else {
GlobalFree(hMem);
hMem = 0;
}
}
}
} else {
nSizeRequired = WideCharToMultiByte
(Cp, 0, lpWideCharMem, lSize,
NULL, 0, NULL, NULL);
hMem = GlobalAlloc(GMEM_MOVEABLE, nSizeRequired);
if (hMem) {
lpMem = GlobalLock(hMem);
if (lpMem != NULL) {
lSize = WideCharToMultiByte
(Cp, 0, lpWideCharMem, lSize,
lpMem, nSizeRequired, NULL, NULL);
FreeConversionMemory = TRUE;
} else {
GlobalFree(hMem);
hMem = 0;
}
}
}
}
if (!hMem) GlobalUnlock(hWideCharMem);
}
}
}
/*next, get text clipboard data in non-wide format...*/
if (!hMem) {
hMem = GetClipboardData(uFormat);
if (!hMem) {
CloseClipboard();
Error(306);
return (FALSE);
}
lSize = GlobalSize(hMem);
#if !defined(WIN32)
if (lSize > 65535) {
CloseClipboard();
ErrorBox(MB_ICONSTOP, 307);
return (FALSE);
}
#endif
lpMem = GlobalLock(hMem);
if (lpMem == NULL) {
CloseClipboard();
ErrorBox(MB_ICONEXCLAMATION, 305);
return (FALSE);
}
{ LPSTR p;
if ((p = _fmemchr(lpMem, '\0', lSize)) != NULL)
lSize = p - lpMem;
}
if (CharSet == CS_EBCDIC) {
HGLOBAL hConvMem = GlobalAlloc(GMEM_MOVEABLE, lSize);
if (hConvMem) {
LPBYTE lpConvMem = GlobalLock(hConvMem);
if (lpConvMem != NULL) {
INT i;
LPBYTE lpMem2 = lpMem;
lpMem = lpConvMem;
for (i = lSize; i > 0; --i)
*lpConvMem++ = MapAnsiToEbcdic[*lpMem2++];
GlobalUnlock(hMem);
hMem = hConvMem;
FreeConversionMemory = TRUE;
} else GlobalFree(hConvMem);
}
}
}
SaveMode = Mode;
if (Mode != InsertMode && Mode != ReplaceMode) {
StartUndoSequence();
Mode = InsertMode;
}
if (SelectCount) DeleteSelected(17);
else EnterDeleteForUndo(&CurrPos, 0, 1); /*force new undo element*/
Mode = SaveMode;
HideEditCaret();
#if 0
// if (lSize && UtfEncoding != 16) {
// LPSTR lp;
// LONG lRemain;
//
// lp = _fmemchr(lpMem, '\0', (size_t)lSize);
// if (lp != NULL && (lp-lpMem+sizeof(BinaryPart)) <= (size_t)lSize
// && lp[1]==BinaryFormat[0]
// && _fmemcmp(lp+1, BinaryFormat, 10) == 0) {
// /*insert first part of null containing binary data...*/
// if (*lpMem) InsertBuffer(lpMem, (UINT)(lp-lpMem), 0);
// lRemain = strtoul(lp+11, &lp, 10);
// if (*lp != ':') lSize = 0;
// else {
// if (lSize >= (lp - lpMem) + lRemain) lSize = lRemain;
// else lSize = 0;
// lpMem = lp + 1;
// }
// } else if (lp) lSize = lp-lpMem;
// }
#endif
/*insert clipboard now...*/
if (lSize) InsertBuffer(lpMem, (UINT)lSize, 1);
GetXPos(&CurrCol);
ShowEditCaret();
/*clean up...*/
GlobalUnlock(hMem);
if (FreeConversionMemory) GlobalFree(hMem);
CloseClipboard();
return (TRUE);
}