95 lines
2.9 KiB
C
95 lines
2.9 KiB
C
/*****************************************************************************
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ExeX()
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This function executes an X command.
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nXq Put n lines into Q-register q
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m,nXq Put characters m to n into Q-register q
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n:Xq Append n lines to Q-register q
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m,n:Xq Append characters m to n into Q-register q
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*****************************************************************************/
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#include "zport.h" /* define portability identifiers */
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#include "tecoc.h" /* define general identifiers */
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#include "defext.h" /* define external global variables */
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#include "deferr.h" /* define identifiers for error messages */
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DEFAULT ExeX() /* execute an X command */
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{
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ptrdiff_t TmpSiz;
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DBGFEN(1,"ExeX",NULL);
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if (EStTop == EStBot) { /* if no numeric argument */
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NArgmt = 1; /* default is 1X */
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} else {
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UMinus(); /* if it's -X, make it -1X */
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if (GetNmA() == FAILURE) { /* get numeric argument */
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DBGFEX(1,DbgFNm,"FAILURE, GetNmA() failed");
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return FAILURE;
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}
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}
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if (IncCBP() == FAILURE) { /* move to char after X */
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DBGFEX(1,DbgFNm,"FAILURE, IncCBP() failed");
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return FAILURE;
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}
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if (FindQR() == FAILURE) { /* find q-register values */
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DBGFEX(1,DbgFNm,"FAILURE, FindQR() failed");
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return FAILURE;
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}
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if (!(CmdMod & COLON)) { /* if no colon modifier */
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if (QR->Start != NULL) { /* if text area not empty */
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ZFree((voidptr)QR->Start);/* free allocated memory */
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QR->Start = QR->End_P1 = NULL;
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}
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}
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if ((CmdMod & MARGIS) == '\0') { /* if it's nXq (not m,nXq) */
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NArgmt = Ln2Chr(NArgmt);
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if (NArgmt > 0) {
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if (MakRom((SIZE_T)NArgmt) == FAILURE) {
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DBGFEX(1,DbgFNm,"FAILURE, MakRom() failed");
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return FAILURE;
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}
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MEMMOVE(QR->End_P1, GapEnd+1, (SIZE_T)NArgmt);
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QR->End_P1 += NArgmt;
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} else if (NArgmt < 0) {
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if (MakRom((SIZE_T)-NArgmt) == FAILURE) {
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DBGFEX(1,DbgFNm,"FAILURE, MakRom() failed");
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return FAILURE;
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}
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MEMMOVE(QR->End_P1, GapBeg+NArgmt, (SIZE_T)-NArgmt);
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QR->End_P1 -= NArgmt;
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}
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} else if (NArgmt != MArgmt) { /* else (it's m,nXq) */
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MEMMOVE(ErrTxt, "m,nX", 5);
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if (GetAra() == FAILURE) {
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DBGFEX(1,DbgFNm,"FAILURE, GetAra() failed");
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return FAILURE;
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}
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if ((AraBeg < GapBeg) && (AraEnd > GapEnd)) {
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TmpSiz = (GapBeg-AraBeg) + (AraEnd-GapEnd);
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if (TmpSiz > 0) {
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if (MakRom((SIZE_T)TmpSiz) == FAILURE) {
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DBGFEX(1,DbgFNm,"FAILURE, MakRom() failed");
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return FAILURE;
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}
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MEMMOVE(QR->End_P1,
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AraBeg,
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(SIZE_T)(GapBeg - AraBeg));
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QR->End_P1 += GapBeg-AraBeg;
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MEMMOVE(QR->End_P1,
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GapEnd+1,
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(SIZE_T)(AraEnd - GapEnd));
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QR->End_P1 += AraEnd-GapEnd;
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}
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} else { /* else area is contiguous */
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TmpSiz = (AraEnd - AraBeg) + 1;
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if (TmpSiz > 0) {
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if (MakRom((SIZE_T)TmpSiz) == FAILURE) {
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DBGFEX(1,DbgFNm,"FAILURE, MakRom() failed");
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return FAILURE;
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}
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MEMMOVE(QR->End_P1, AraBeg, (SIZE_T)TmpSiz);
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QR->End_P1 += TmpSiz;
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}
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}
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}
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CmdMod = '\0'; /* clear modifiers flags */
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DBGFEX(1,DbgFNm,"SUCCESS");
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return SUCCESS;
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}
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