/*****************************************************************************
SkpE()
*****************************************************************************/
static DEFAULT SkpE() /* skip one of the E commands */
{
unsigned char TmpChr;
static DEFAULT (*FEAray[])(VVOID) = {
/* A */ SkpSkp, /* B */ SkpArg, /* C */ SkpSkp, /* D */ SkpSkp,
/* E */ 0, /* F */ SkpSkp, /* G */ SkpArg, /* H */ SkpSkp,
/* I */ SkpArg, /* J */ SkpSkp, /* K */ SkpSkp, /* L */ SkpArg,
/* M */ SkpSkp, /* N */ SkpSkp, /* O */ SkpSkp, /* P */ SkpSkp,
/* Q */ SkpOne, /* R */ SkpArg, /* S */ SkpSkp, /* T */ SkpSkp,
/* U */ SkpSkp, /* V */ SkpSkp, /* W */ SkpArg, /* X */ SkpSkp,
/* Y */ SkpSkp, /* Z */ SkpSkp
};
if (CBfPtr == CStEnd)
if (MStTop < 0) /* if not in a macro */
{
ErrUTC(); /* unterminated command */
return FAILURE;
}
else
return SUCCESS;
++CBfPtr;
TmpChr = To_Upper(*CBfPtr);
if (TmpChr == '%')
return SkpOne();
else if (TmpChr == '_')
return SkpArg();
else if (!Is_Upper(TmpChr) || (TmpChr=='E'))
{
ErrChr(ERR_IEC, *CBfPtr);
return FAILURE;
}
return (*FEAray[TmpChr-'A'])();
}
DEFAULT ExeDQu() /* execute a " (double quote) command */
{
unsigned char RelExp; /* relational expression */
DBGFEN(1,"ExeDQu",NULL);
if (EStTop == EStBot) { /* if no numeric argument */
ErrMsg(ERR_NAQ); /* no argument before " */
DBGFEX(1,DbgFNm,"FAILURE");
return FAILURE;
}
if (GetNmA() == FAILURE) {
DBGFEX(1,DbgFNm,"FAILURE, GetNmA() failed");
return FAILURE;
}
if (IncCBP() == FAILURE) {
DBGFEX(1,DbgFNm,"FAILURE, IncCBP() failed");
return FAILURE;
}
CmdMod = '\0';
RelExp = (unsigned char)NArgmt;
switch (To_Upper(*CBfPtr)) {
case 'A': /* test for alphabetic */
if (Is_Alpha(RelExp)) {
DBGFEX(1,DbgFNm,"SUCCESS, Is_Alpha");
return SUCCESS;
}
break;
case 'C': /* test for symbol constituent */
if (Is_SyCon(RelExp)) {
DBGFEX(1,DbgFNm,"SUCCESS, Is_SyCon");
return SUCCESS;
}
break;
case 'D': /* test for numeric */
if (Is_Digit(RelExp)) {
DBGFEX(1,DbgFNm,"SUCCESS, Is_Digit");
return SUCCESS;
}
break;
case 'E': /* test for equal to zero */
case 'F': /* test for false */
case 'U': /* test for unsuccessful */
case '=': /* test for equal to zero */
if (NArgmt == 0) {
DBGFEX(1,DbgFNm,"SUCCESS, equal to zero");
return SUCCESS;
}
break;
case 'G': /* test for greater than zero */
case '>': /* test for greater than zero */
if (NArgmt > 0) {
DBGFEX(1,DbgFNm,"SUCCESS, greater than zero");
return SUCCESS;
}
break;
case 'L': /* test for less than zero */
case 'S': /* test for successful */
case 'T': /* test for TRUE */
case '<': /* test for less than zero */
if (NArgmt < 0) {
DBGFEX(1,DbgFNm,"SUCCESS, less than zero");
return SUCCESS;
}
break;
case 'N': /* test for not equal to zero */
if (NArgmt != 0) {
DBGFEX(1,DbgFNm,"SUCCESS, not equal to zero");
return SUCCESS;
}
break;
case 'R': /* test for alphanumeric */
if (Is_Alnum(RelExp)) {
DBGFEX(1,DbgFNm,"SUCCESS, Is_Alnum");
return SUCCESS;
}
break;
case 'V': /* test for lowercase */
if (Is_Lower(RelExp)) {
DBGFEX(1,DbgFNm,"SUCCESS, Is_Lower");
return SUCCESS;
}
break;
case 'W': /* test for uppercase */
if (Is_Upper(RelExp)) {
DBGFEX(1,DbgFNm,"SUCCESS, Is_Upper");
return SUCCESS;
}
break;
default:
ErrMsg(ERR_IQC); /* ill. char. after " */
DBGFEX(1,DbgFNm,"FAILURE");
return FAILURE;
}
if (FlowEE() == FAILURE) { /* flow to | or ' */
DBGFEX(1,DbgFNm,"FAILURE, FlowEE() failed");
return FAILURE;
}
CmdMod = '\0'; /* clear modifiers flags */
DBGFEX(1,DbgFNm,"SUCCESS, test failed");
return SUCCESS;
}
DEFAULT FindQR() /* find q-register index */
{
WORD i;
BOOLEAN LocalQ;
WORD QIndex;
unsigned char QName;
/*
* If it's a local q-register name (starts with a dot), remember and move on.
*/
DBGFEN(3,"FindQR",NULL);
LocalQ = (*CBfPtr == '.'); /* if local q-register */
if (LocalQ) { /* if local q-register name */
if (IncCBP() == FAILURE) { /* move to next character */
DBGFEX(3,DbgFNm,"FAILURE, IncCBP() failed");
return FAILURE;
}
}
/*
* Get the index into the QRgstr array into i.
*/
QName = *CBfPtr;
if (Is_Upper(QName)) {
i = 'A' - 10; /* QRgStr[10..35] */
} else if (Is_Lower(QName)) {
i = 'a' - 10; /* QRgstr[10..35] */
} else if (Is_Digit(QName)) {
i = '0'; /* QRgstr[0..9] */
} else {
ErrChr(ERR_IQN, QName);
DBGFEX(3,DbgFNm,"FAILURE, illegal Q-register name");
return FAILURE;
}
/*
* Get a pointer to the structure into QR.
*/
QIndex = QName - i; /* index into QRgstr[] */
if (LocalQ) { /* if local q-register */
if (MStTop < 0) { /* if not in a macro */
QR = &QRgstr[QIndex+36]; /* use QRgstr[36..71] */
} else { /* else (we're in a macro) */
WORD TMIndx;
QRptr QRp;
for (TMIndx=MStTop; TMIndx>0; TMIndx--) {
if (MStack[TMIndx].QRgstr != NULL) {
QRp = MStack[TMIndx].QRgstr;
break;
}
}
QR = (TMIndx != 0) ? /* if we found one */
&QRp[QIndex]: /* use the one we found */
(QRptr) &QRgstr[QIndex+36]; /* else use main level ones */
}
} else {
QR = &QRgstr[QIndex];
}
#if DEBUGGING
sprintf(DbgSBf,"SUCCESS, %sQIndex = %d (QName = '%c')",
(LocalQ) ? "local " : "", QIndex, QName);
DBGFEX(3,DbgFNm,DbgSBf);
#endif
return SUCCESS;
}
/*****************************************************************************
BakSrc()
This recursive function does a backward search in the edit buffer,
looking for a string which will match the first match construct in the search
buffer. Basically, it is the high-speed part of the search algorithm: it
scans the edit buffer looking for the first character in the search string.
On entry, SStPtr points to the first match construct in the search
buffer. On exit, SStPtr points to the last character of the first match
construct in the search buffer.
SBfPtr points to the character following the last character in
the search string. This function does not modify SBfPtr.
On entry, EBPtr1 points to the place in the edit buffer where
the search starts. On exit, if the search was successful, EBPtr1 will
point to the found character. If the search was unsuccessful, EBPtr1 will
be less than EndSAr.
On entry, EBPtr2 is undefined. On exit, if the search was
successful, EBPtr2 points to the last character of the found string. If
the search was unsuccessful, EBPtr2 is undefined.
EndSAr points to the end of the search area (where the search ends).
Note that for backwards searches, EndSAr is less than EBPtr1. This function
does not modify EndSAr.
Match constructs are:
^X match any character
^S match a separator character (not letter or digit)
^N match anything but following match construct
^EA match any alphabetic
^EB match a separator character (not letter or digit)
^EC match symbol constituent
^ED match any digit
^EGq match any character in q-register q
^EL match any line terminator (LF, VT, FF)
^EM match non-null string of following match construct
^ER match any alphanumeric
^ES match non-null string of spaces and/or tabs
^EV match lowercase alphabetic
^EW match uppercase alphabetic
^EX match any character
^E<nnn> match character with ASCII code nnn (octal)
^E[x1,x2,...xn] match any of the match constructs x1, x2, etc.
else match the character itself
*****************************************************************************/
#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 "chmacs.h" /* define character processing macros */
#include "deferr.h" /* define identifiers for error messages */
DEFAULT BakSrc() /* forward search for 1st search char */
{
unsigned char Charac; /* holds a character */
charptr LstBeg; /* beginning of ^E[x1,x2,...] list */
char OtCase; /* "other" case character */
charptr QRPtr; /* pointer into q-register text */
BOOLEAN SamChr; /* same character indicator */
charptr SavEP2; /* temporary holder of EBPtr2 */
charptr SavSSP; /* temporary holder of SStPtr */
DEFAULT Status; /* FindQR() status for ^EGq */
charptr TCBfPt; /* temporary holder of CBfPtr */
charptr TCStEn; /* temporary holder of CStEnd */
LONG TmpLng; /* holds octal number for ^E<nnn> */
#if DEBUGGING
static char *DbgFNm = "BakSrc";
sprintf(DbgSBf,"*SStPtr = '%c', *EBPtr1 = '%c'", *SStPtr, *EBPtr1);
DbgFEn(3,DbgFNm,DbgSBf);
#endif
switch (*SStPtr) {
case CTRL_X: /* ^X match any char */
break;
case CTRL_S: /* ^S match separator char */
for (; EBPtr1 >= EndSAr; --EBPtr1) {
if (!Is_Alnum(*EBPtr1)) {
break;
}
}
break;
case CTRL_N: /* ^Nx match any BUT next match construct */
if (++SStPtr == SBfPtr) {
ErrMsg(ERR_ISS); /* illegal search string */
DBGFEX(3,DbgFNm,"FAILURE, no ^N arg");
return FAILURE;
}
SavSSP = SStPtr;
for (;EBPtr1>=EndSAr;--EBPtr1) {
EBPtr2 = EBPtr1;
SStPtr = SavSSP;
if (CMatch(&SamChr) == FAILURE) {
DBGFEX(3,DbgFNm,"FAILURE, CMatch failed");
return FAILURE;
}
if (!SamChr) {
break;
}
}
break;
case CTRL_E: /* ^E match construct */
if (++SStPtr == SBfPtr) {
ErrMsg(ERR_ICE); /* ICE = illegal ^E */
DBGFEX(3,DbgFNm,"FAILURE, no ^E arg");
return FAILURE;
}
switch (To_Upper(*SStPtr)) {
case 'A': /* ^EA match any alphabetic */
for (; EBPtr1 >= EndSAr; --EBPtr1) {
if (Is_Alpha(*EBPtr1)) {
break;
}
}
break;
case 'B': /* ^EB match any separator (==^S) */
for (; EBPtr1 >= EndSAr; --EBPtr1) {
if (!Is_Alnum(*EBPtr1)) {
break;
}
}
break;
case 'C': /* ^EC match symbol constitient */
for (; EBPtr1 >= EndSAr; --EBPtr1) {
if (Is_SyCon(*EBPtr1)) {
break;
}
}
break;
case 'D': /* ^ED match any digit */
for (; EBPtr1 >= EndSAr; --EBPtr1) {
if (Is_Digit(*EBPtr1)) {
break;
}
}
break;
case 'G': /* ^EGq match any char in Q-reg q */
if (++SStPtr == SBfPtr) {
ErrMsg(ERR_ICE);
DBGFEX(3,DbgFNm,"FAILURE, no ^EG arg");
return FAILURE;
}
TCBfPt = CBfPtr; /* save CBfPtr */
TCStEn = CStEnd; /* save CStEnd */
CBfPtr = SStPtr;
CStEnd = SBfPtr;
Status = FindQR();
SStPtr = CBfPtr;
SBfPtr = CStEnd;
CBfPtr = TCBfPt; /* restore CBfPtr */
CStEnd = TCStEn; /* restore CStEnd */
if (Status == FAILURE) {
DBGFEX(3,DbgFNm,"FAILURE, ^EG FindQR failed");
return FAILURE;
}
for (; EBPtr1 >= EndSAr; --EBPtr1) {
QRPtr = QR->Start;
while (QRPtr < QR->End_P1) {
if (*QRPtr++ == *EBPtr1) {
goto kludge;
}
}
}
kludge: break;
case 'L': /* ^EL match line terminator */
for (; EBPtr1 >= EndSAr; --EBPtr1) {
if (IsEOL(*EBPtr1)) {
break;
}
}
break;
case 'M': /* ^EM match multiple next constructs */
if (++SStPtr == SBfPtr) {
ErrMsg(ERR_ICE);
DBGFEX(3,DbgFNm,"FAILURE, no ^EM arg");
return FAILURE;
}
SavSSP = SStPtr;
if (BakSrc() == FAILURE) {
DBGFEX(3,DbgFNm,"FAILURE");
return FAILURE;
}
if (EBPtr1 < EndSAr) { /* if not found */
break;
}
SavEP2 = EBPtr2;
while (EBPtr1 > EndSAr) {
EBPtr1--;
EBPtr2 = EBPtr1;
SStPtr = SavSSP;
if (CMatch(&SamChr) == FAILURE) {
DBGFEX(3,DbgFNm,"FAILURE");
return FAILURE;
}
if (!SamChr) {
EBPtr1++;
EBPtr2 = SavEP2;
break;
}
}
DBGFEX(3,DbgFNm,"SUCCESS");
return SUCCESS;
case 'R': /* ^ER match any alphanumeric */
for (; EBPtr1 >= EndSAr; --EBPtr1) {
if (Is_Alnum(*EBPtr1)) {
break;
}
}
break;
case 'S': /* ^ES match any spaces/tabs */
for (; EBPtr1 >= EndSAr; --EBPtr1) {
if ((*EBPtr1 == SPACE) || (*EBPtr1 == TABCHR)) {
EBPtr2 = EBPtr1;
while (EBPtr1 > EndSAr) {
EBPtr1--;
if ((*EBPtr1 != SPACE) &&
(*EBPtr1 != TABCHR)) {
EBPtr1++;
break;
}
}
DBGFEX(3,DbgFNm,"SUCCESS");
return SUCCESS;
}
}
break;
case 'V': /* ^EV match any lowercase char */
for (; EBPtr1 >= EndSAr; --EBPtr1) {
if (Is_Lower(*EBPtr1)) {
break;
}
}
break;
case 'W': /* ^EW match any uppercase character */
for (; EBPtr1 >= EndSAr; --EBPtr1) {
if (Is_Upper(*EBPtr1)) {
break;
}
}
break;
case 'X': /* ^EX match any char (==^X) */
break;
case '<': /* ^E<n> match char w/ASCII octal code n */
if (++SStPtr == SBfPtr) {
ErrMsg(ERR_ICE);
DBGFEX(3,DbgFNm,"FAILURE, no ^E<> arg");
return FAILURE;
}
TmpLng = 0;
while (Is_Digit(*SStPtr)) {
TmpLng = (TmpLng * 8) + (*SStPtr - '0');
if (TmpLng > 127) {
ErrMsg(ERR_ICE);
DBGFEX(3,DbgFNm,"FAILURE");
return FAILURE;
}
if (++SStPtr == SBfPtr) {
ErrMsg(ERR_ICE);
DBGFEX(3,DbgFNm,"FAILURE");
return FAILURE;
}
}
if (*SStPtr != '>') {
ErrMsg(ERR_ICE);
DBGFEX(3,DbgFNm,"FAILURE");
return FAILURE;
}
Charac = (unsigned char)TmpLng;
for (; EBPtr1 >= EndSAr; --EBPtr1) {
if (*EBPtr1 == Charac) {
break;
}
}
break;
case '[': /* ^E[x1,x2,...] match any one of x1,x2,... */
if (++SStPtr == SBfPtr) {
ErrMsg(ERR_ICE);
DBGFEX(3,DbgFNm,"FAILURE, no ^E[] arg");
return FAILURE;
}
LstBeg = SStPtr;
for (; EBPtr1 >= EndSAr; --EBPtr1) {
while (*SStPtr != ']') {
if (*SStPtr == ',') {
if (++SStPtr == SBfPtr) {
ErrMsg(ERR_ICE);
DBGFEX(3,DbgFNm,"FAILURE");
return FAILURE;
}
} else {
EBPtr2 = EBPtr1;
if (CMatch(&SamChr) == FAILURE) {
DBGFEX(3,DbgFNm,"FAILURE");
return FAILURE;
}
if (SamChr) {
while (*SStPtr != ']') {
if (++SStPtr == SBfPtr) {
ErrMsg(ERR_ICE);
DBGFEX(3,DbgFNm,"FAILURE");
return FAILURE;
}
}
EBPtr2 = EBPtr1;
DBGFEX(3,DbgFNm,"SUCCESS");
return SUCCESS;
}
if (++SStPtr == SBfPtr) {
ErrMsg(ERR_ICE);
DBGFEX(3,DbgFNm,"FAILURE");
return FAILURE;
}
}
}
SStPtr = LstBeg;
}
break;
default:
ErrMsg(ERR_ICE);
DBGFEX(3,DbgFNm,"FAILURE, bad ^E arg");
return FAILURE;
} /* end of ^E switch */
break;
default: /* edit buffer char must match search string char */
if (SMFlag) { /* if case dependence */
for (; EBPtr1 >= EndSAr; --EBPtr1) {
if (*EBPtr1 == *SStPtr) {
break;
}
}
} else { /* else case independence */
OtCase = Is_Upper(*SStPtr)
? To_Lower(*SStPtr)
: To_Upper(*SStPtr);
for (; EBPtr1 >= EndSAr; --EBPtr1) {
if ((*EBPtr1 == *SStPtr) || (*EBPtr1 == OtCase)) {
break;
}
}
}
} /* end of switch */
EBPtr2 = EBPtr1;
DBGFEX(3,DbgFNm,"SUCCESS");
return SUCCESS;
}