92 lines
2.2 KiB
C
92 lines
2.2 KiB
C
/*****************************************************************************
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ExeM()
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This function executes an M command.
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Mq Execute string in 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 ExeM() /* execute an M command */
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{
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DEFAULT status;
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BOOLEAN islocal;
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DBGFEN(1,"ExeM",NULL);
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if (IncCBP() == FAILURE) { /* if no character after M */
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DBGFEX(1,DbgFNm,"FAILURE, no Q-register specified");
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return FAILURE;
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}
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islocal = (*CBfPtr=='.'); /* TAA Addition */
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if (FindQR() == FAILURE) { /* find q-register */
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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 (QR->Start == NULL) { /* if q-register is empty */
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DBGFEX(1,DbgFNm,"SUCCESS, Q-register is empty");
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return SUCCESS;
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}
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/*
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* Save the current execution state and make the text in the Q-register be
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* the command string to execute.
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*/
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if (PshMac(QR->Start, QR->End_P1) == FAILURE) {
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DBGFEX(1,DbgFNm,"FAILURE, PshMac() failed");
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return FAILURE;
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}
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/*
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* If the M command is not colon-modified, create a new set of local
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* q-registers and zero them out.
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*/
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if ((CmdMod & COLON) == 0&&!islocal) { /* if not colon-modified */
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QRptr QRp;
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WORD i;
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QRp = (QRptr)ZAlloc(36 * sizeof(struct QReg));
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if (QRp == NULL) {
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ErrMsg(ERR_MEM);
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DBGFEX(3,DbgFNm,"FAILURE");
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return FAILURE;
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}
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MStack[MStTop].QRgstr = QRp;
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for (i = 0; i < 36; ++i, ++QRp) {
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QRp->Start = QRp->End_P1 = NULL;
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QRp->Number = 0;
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}
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}
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else CmdMod &= ~COLON; /* clear colon flag TAA Mod */
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/*
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* execute command string in Q-register
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*/
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status = ExeCSt();
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#if DEBUGGING
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if (status == FAILURE) {
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DbgFMs(1,DbgFNm,"ExeCSt() failed");
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}
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#endif
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/*
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* restore old execution state
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*/
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if (PopMac() == FAILURE) {
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DBGFEX(1,DbgFNm,"FAILURE, PopMac() failed");
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return FAILURE;
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}
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DBGFEX(1,DbgFNm,(status == FAILURE) ? "FAILURE" : "SUCCESS");
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return status;
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}
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