teacl/src/exeequ.c

55 lines
2.0 KiB
C

/*****************************************************************************
ExeEqu()
This function executes the = (equals sign) command:
n= display n in decimal, with carriage return
n== display n in octal, with carriage return
n=== display n in hexadecimal, with carriage return
n:= display n in decimal, without carriage return
n:== display n in octal, without carriage return
n:=== display n in hexadecimal, without carriage return
*****************************************************************************/
#include "zport.h" /* define portability identifiers */
#include "tecoc.h" /* define general identifiers */
#include "defext.h" /* define external global variables */
#include "dchars.h" /* define identifiers for characters */
#include "deferr.h" /* define identifiers for error messages */
DEFAULT ExeEqu() /* execute an = (equals sign) comand */
{
DBGFEN(1,"ExeEqu",NULL);
if (EStTop == EStBot) { /* if no numeric argument */
ErrMsg(ERR_NAE); /* NAE = "No arg before =" */
DBGFEX(1,DbgFNm,"FAILURE, no arg before =");
return FAILURE;
}
if (GetNmA() == FAILURE) { /* get the numeric argument */
DBGFEX(1,DbgFNm,"FAILURE, GetNmA() failed");
return FAILURE;
}
if (*(CBfPtr+1) != '=') { /* if next char not = */
MakDBf(NArgmt, 10); /* make string in decimal */
} else {
if (IncCBP() == FAILURE) { /* move to next char */
DBGFEX(1,DbgFNm,"FAILURE");
return FAILURE;
}
if (*(CBfPtr+1) != '=') { /* if next char not = */
MakDBf(NArgmt, 8); /* make string in octal */
} else {
if (IncCBP() == FAILURE) { /* move to next char */
DBGFEX(1,DbgFNm,"FAILURE");
return FAILURE;
}
MakDBf(NArgmt, 16); /* make string in hex */
}
}
if (CmdMod & COLON) { /* if colon modified */
CmdMod &= ~COLON; /* clear colon flag */
} else {
*DBfPtr++ = CRETRN; /* append a carriage return */
*DBfPtr++ = LINEFD; /* append a line feed */
}
ZDspBf(DBfBeg, DBfPtr-DBfBeg); /* display the string */
DBGFEX(1,DbgFNm,"SUCCESS");
return SUCCESS;
}