freem/src/xecline.c - diff

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Diff for /freem/src/xecline.c between versions 1.14 and 1.30

version 1.14, 2025/04/13 04:22:43	version 1.30, 2025/05/20 16:20:42
Line 24	Line 24
* along with FreeM. If not, see <https://www.gnu.org/licenses/>.	* along with FreeM. If not, see <https://www.gnu.org/licenses/>.
*	*
* $Log$	* $Log$
	* Revision 1.30 2025/05/20 16:20:42 snw
	* Update ROUTINE SSVN after ZEDIT and ZSAVE
	*
	* Revision 1.29 2025/05/20 14:56:56 snw
	* Fix direct-mode interface to online help
	*
	* Revision 1.28 2025/05/20 14:36:06 snw
	* Documentation updates; raise ZCMMND instead of NOSTAND for restricted_mode restrictions
	*
	* Revision 1.27 2025/05/19 21:29:29 snw
	* Add basic tab completion to direct mode
	*
	* Revision 1.26 2025/05/19 02:03:31 snw
	* Reverse-engineer and document argumented ZPRINT (thanks to D. Wicksell)
	*
	* Revision 1.25 2025/05/18 18:15:38 snw
	* Add ZEDIT command for editing routines
	*
	* Revision 1.24 2025/05/14 12:22:04 snw
	* Further work on shared memory
	*
	* Revision 1.23 2025/05/06 16:10:06 snw
	* Add extra blank before readline call on NetBSD
	*
	* Revision 1.22 2025/05/05 14:53:17 snw
	* Modify rpm spec to include documentation TODO
	*
	* Revision 1.21 2025/05/01 17:02:30 snw
	* Further debugging improvements
	*
	* Revision 1.20 2025/04/30 17:19:16 snw
	* Improve backtraces in debugger
	*
	* Revision 1.19 2025/04/30 14:41:03 snw
	* Further debugger work
	*
	* Revision 1.18 2025/04/29 18:46:17 snw
	* Begin work on interactive debugger
	*
	* Revision 1.17 2025/04/28 19:38:55 snw
	* Add trace mode
	*
	* Revision 1.16 2025/04/28 14:52:54 snw
	* Temporarily revert global handler refactor and fix reference regression in xecline
	*
	* Revision 1.15 2025/04/15 16:49:36 snw
	* Make use of logprintf throughout codebase
	*
* Revision 1.14 2025/04/13 04:22:43 snw	* Revision 1.14 2025/04/13 04:22:43 snw
* Fix snprintf calls	* Fix snprintf calls
*	*
Line 147 void rbuf_dump(void);	Line 195 void rbuf_dump(void);
short rbuf_slot_from_name(char *);	short rbuf_slot_from_name(char *);
short is_standard(void);	short is_standard(void);

	#ifdef HAVE_LIBREADLINE
	char *m_commands[] = {
	"?",
	"@",
	"!<",
	"!>",
	"!!",
	"ablock",
	"astart",
	"astop",
	"aunblock",
	"break",
	"close",
	"do",
	"else",
	"events",
	"for",
	"goto",
	"halt",
	"hang",
	"history",
	"if",
	"job",
	"jobtab",
	"kill",
	"ksubscripts",
	"kvalue",
	"lock",
	"locktab",
	"merge",
	"new",
	"open",
	"quit",
	"rbuf",
	"rcl",
	"read",
	"set",
	"shmpages",
	"shmstat",
	"tcommit",
	"then",
	"trantab",
	"trollback",
	"tstart",
	"use",
	"view",
	"wh",
	"write",
	"xecute",
	"zassert",
	"zbreak",
	"zconst",
	"zedit",
	"zgoto",
	"zhalt",
	"zinsert",
	"zjob",
	"zload",
	"zmap",
	"znew",
	"zprint",
	"zquit",
	"zremove",
	"zsave",
	"zthrow",
	"ztrap",
	"zunmap",
	"zwatch",
	"zwith",
	"zwrite",
	"ABLOCK",
	"ASTART",
	"ASTOP",
	"AUNBLOCK",
	"BREAK",
	"CLOSE",
	"DO",
	"ELSE",
	"FOR",
	"GOTO",
	"HALT",
	"HANG",
	"IF",
	"JOB",
	"KILL",
	"KSUBSCRIPTS",
	"KVALUE",
	"LOCK",
	"MERGE",
	"NEW",
	"OPEN",
	"QUIT",
	"READ",
	"SET",
	"TCOMMIT",
	"THEN",
	"TROLLBACK",
	"TSTART",
	"USE",
	"VIEW",
	"WRITE",
	"XECUTE",
	"ZASSERT",
	"ZBREAK",
	"ZCONST",
	"ZEDIT",
	"ZGOTO",
	"ZHALT",
	"ZINSERT",
	"ZJOB",
	"ZLOAD",
	"ZMAP",
	"ZNEW",
	"ZPRINT",
	"ZQUIT",
	"ZREMOVE",
	"ZSAVE",
	"ZTHROW",
	"ZTRAP",
	"ZUNMAP",
	"ZWATCH",
	"ZWITH",
	"ZWRITE",
	NULL
	};

	char *command_completion(const char , int, int);
	char command_generator(const char , int);

	char *command_completion(const char text, int start, int end)
	{
	if (start > 0) return NULL;
	rl_attempted_completion_over = 1;
	return rl_completion_matches(text, command_generator);
	}

	char command_generator(const char text, int state)
	{
	static int list_index, len;
	char *name;

	if (!state) {
	list_index = 0;
	len = strlen(text);
	}

	while ((name = m_commands[list_index++])) {
	if (strncmp(name, text, len) == 0) {
	return strdup(name);
	}
	}

	return NULL;
	}
	#endif

/*	/*
* xecline():	* xecline():
* typ (where to go on function entry): 1 = restart	* typ (where to go on function entry): 1 = restart
Line 159 int xecline(int typ)	Line 363 int xecline(int typ)
short new_and_set = FALSE;	short new_and_set = FALSE;
short new_object = FALSE;	short new_object = FALSE;
short destructor_run = FALSE;	short destructor_run = FALSE;
short debug_mode = FALSE;
short libcall = FALSE;	short libcall = FALSE;
char *namold;	char *namold;
long rouoldc;	long rouoldc;
unsigned long jobtime;	unsigned long jobtime;
char label[256], routine[256];	char label[256], routine[256];

	char tracestr[512];

char *vn;	char *vn;
char *an;	char *an;
char *tmp;	char *tmp;
Line 180 int xecline(int typ)	Line 385 int xecline(int typ)

char *reeval_codptr;	char *reeval_codptr;
char reeval_code[512];	char reeval_code[512];
	char entryref[256];

int i;	int i;
int j;	int j;
Line 229 int xecline(int typ)	Line 435 int xecline(int typ)

next_line: /* entry point for next command line */	next_line: /* entry point for next command line */

	if (debug_mode) {
	debug_mode = debugger (DEBENTRY_LINE, entryref);
	}

job_set_status (pid, JSTAT_INTERPRETER);	job_set_status (pid, JSTAT_INTERPRETER);

if (then_ctr > 0) {	if (then_ctr > 0) {
Line 277 next_line: /* entry point for n	Line 486 next_line: /* entry point for n
codptr = code;	codptr = code;

next_cmnd: /* continue line entry point */	next_cmnd: /* continue line entry point */
	getraddress (entryref, nstx);
	if (debug_mode) {
	debug_mode = debugger (DEBENTRY_CMD, entryref);
	}

if (sigint_in_for) goto for_quit;	if (sigint_in_for) goto for_quit;

if (forsw && (forpost[forx][0] != '\0')) {	if (forsw && (forpost[forx][0] != '\0')) {
Line 497 next0:	Line 711 next0:
if (ch == '!') { /* UNIXCALL */	if (ch == '!') { /* UNIXCALL */

if (restricted_mode) {	if (restricted_mode) {
merr_raise (NOSTAND);	merr_raise (CMMND);
goto err;	goto err;
}	}

Line 848 again:	Line 1062 again:
}	}
}	}

	if (trace_mode) tracestr[0] = '\0';

switch (mcmnd) {	switch (mcmnd) {

case MAP:	case MAP:
Line 970 set0:	Line 1186 set0:

ch = *codptr;	ch = *codptr;

if (ch == '.') {	if (ch == '.') {
setref = TRUE;	if (!isdigit (*(codptr + 1))) {
codptr++;	setref = TRUE;
expr (NAME);	codptr++;
	expr (NAME);
	}
	else {
	expr (STRING);
	}
}	}
else {	else {
expr (STRING);	expr (STRING);
Line 2356 s_end:	Line 2577 s_end:

case QUIT:	case QUIT:

	if (trace_mode) {
	fprintf (stderr, ">> TRACE: $STACK = %d QUIT CMD = %c\r\n", nstx, nestc[nstx]);
	}

if (tp_level > 0) {	if (tp_level > 0) {
merr_raise (M42);	merr_raise (M42);
goto err;	goto err;
Line 2385 s_end:	Line 2610 s_end:
if (nestc[nstx] == '$') { /* extrinsic function/variable */	if (nestc[nstx] == '$') { /* extrinsic function/variable */


	if (trace_mode) {
	fprintf (stderr, ">> TRACE: QUIT FROM EXTRINSIC\r\n");
	}

#ifdef DEBUG_NEWSTACK	#ifdef DEBUG_NEWSTACK
printf ("EXTRINSIC\r\n");	printf ("EXTRINSIC\r\n");
#endif	#endif
Line 2414 s_end:	Line 2643 s_end:
else {	else {

expr (STRING);	expr (STRING);

	if (trace_mode) {
	fprintf (stderr, ">> TRACE: QUIT FROM SUBROUTINE\r\n");
	}

if (ierr != OK - CTRLB && merr () != OK && merr () != INRPT) {	if (ierr != OK - CTRLB && merr () != OK && merr () != INRPT) {

Line 2580 quit0:	Line 2813 quit0:
printf ("CHECK 03 (Stack PUSH)\r\n");	printf ("CHECK 03 (Stack PUSH)\r\n");
#endif	#endif


if (++nstx > NESTLEVLS) {	if (++nstx > NESTLEVLS) {
nstx--;	nstx--;
merr_raise (STKOV);	merr_raise (STKOV);
Line 2606 quit0:	Line 2838 quit0:
nestn[nstx] = 0; /* no overring of routine */	nestn[nstx] = 0; /* no overring of routine */
nestr[nstx] = roucur - rouptr; /* save roucur: only for $V(26) needed */	nestr[nstx] = roucur - rouptr; /* save roucur: only for $V(26) needed */
ztrap[nstx][0] = EOL;	ztrap[nstx][0] = EOL;


forsw = TRUE;	forsw = TRUE;
ftyp = 0; /* no args is FOREVER */	ftyp = 0; /* no args is FOREVER */
Line 3050 do_xecute:	Line 3282 do_xecute:

do_goto:	do_goto:

	if (trace_mode) {
	char rn[256];
	stcpy (rn, rou_name);
	stcnv_m2c (rn);

	switch (mcmnd) {
	case DO:
	snprintf (tracestr, sizeof (tracestr) - 1, "rtn = %s $stack = %d do ", rn, nstx);
	break;
	case GOTO:
	snprintf (tracestr, sizeof (tracestr) - 1, "rtn = %s $stack = %d goto ", rn, nstx);
	break;
	}
	}

offset = 0;	offset = 0;
label[0] = routine[0] = EOL;	label[0] = routine[0] = EOL;
dofram0 = 0;	dofram0 = 0;
Line 3084 do_goto:	Line 3331 do_goto:

stcpy (label, varnam);	stcpy (label, varnam);

	if (trace_mode) {
	char ttt[256];
	stcpy (ttt, label);
	stcnv_m2c (ttt);

	strcat (tracestr, ttt);
	}

ch = *++codptr;	ch = *++codptr;
}	}

Line 3099 do_goto:	Line 3354 do_goto:

/* unless argument is numeric, expr returns wrong codptr */	/* unless argument is numeric, expr returns wrong codptr */
if ((ch = codptr) != SP && (ch != EOL) && (ch != ',') && (ch != '^')) ch = ++codptr;	if ((ch = codptr) != SP && (ch != EOL) && (ch != ',') && (ch != '^')) ch = ++codptr;

	if (trace_mode) {
	char ttt[256];
	snprintf (ttt, 255, "+%d", offset);
	strcat (tracestr, ttt);
	}
}	}

if (ch == '^') { /* parse routine */	if (ch == '^') { /* parse routine */
Line 3109 do_goto:	Line 3369 do_goto:
if (merr () > OK) goto err;	if (merr () > OK) goto err;

stcpy (routine, varnam);	stcpy (routine, varnam);

	if (trace_mode) {
	char ttt[256];
	char ttx[256];

	stcpy (ttt, routine);
	stcnv_m2c (ttt);
	snprintf (ttx, 255, "^%s", ttt);
	strcat (tracestr, ttx);
	}

dosave[0] = EOL;	dosave[0] = EOL;
ch = *++codptr;	ch = *++codptr;
loadsw = TRUE;	loadsw = TRUE;
}	}

	if (trace_mode) {
	fprintf (stderr, ">> TRACE: %s\r\n", tracestr);
	}

if (ch == '(' && mcmnd == DO) { /* parse parameter */	if (ch == '(' && mcmnd == DO) { /* parse parameter */

if (offset) {	if (offset) {
Line 4440 use_socket:	Line 4714 use_socket:
if (k > MAXSEQ) goto open_socket;	if (k > MAXSEQ) goto open_socket;

if (restricted_mode) {	if (restricted_mode) {
merr_raise (NOSTAND);	merr_raise (CMMND);
goto err;	goto err;
}	}

Line 4872 open_socket:	Line 5146 open_socket:
if (merr () > OK) break;	if (merr () > OK) break;
}	}
else {	else {
halt:i = 0;	halt:
	i = 0;
}	}

cleanup ();	cleanup ();
Line 5071 open_socket:	Line 5346 open_socket:
expr (STRING);	expr (STRING);
if (merr () > OK) break;	if (merr () > OK) break;

switch (intexpr (argptr)) {	{
	char brkstr[256];
case 2:
DSM2err = TRUE;	stcpy (brkstr, argptr);
break; /* enable DSM V 2 error processing */	stcnv_m2c (brkstr);

case -2:	if (strcmp (brkstr, "DEBUG") == 0) {
DSM2err = FALSE;	debug_mode = TRUE;
break; /* enable normal error processing */	}
	else {
case 0:	switch (intexpr (argptr)) {
breakon = FALSE;
break; /* disable CTRL/C */	case 2:
	DSM2err = TRUE;
default:	break; /* enable DSM V 2 error processing */
breakon = TRUE;
break; /* enable CTRL/C */	case -2:
	DSM2err = FALSE;
	break; /* enable normal error processing */

	case 0:
	breakon = FALSE;
	break; /* disable CTRL/C */

	default:
	breakon = TRUE;
	break; /* enable CTRL/C */
	}
	}
}	}

break;	break;

case VIEW:	case VIEW:
Line 5178 open_socket:	Line 5466 open_socket:
break;	break;

/* Z-COMMANDS */	/* Z-COMMANDS */
	case ZEDIT:
	merr_raise (cmd_zedit (&ra));
	MRESCHECK(ra);
	break;

case ZGO:	case ZGO:

/* ZGO with arguments: same as GOTO but with BREAK on */	/* ZGO with arguments: same as GOTO but with BREAK on */
Line 5317 zgo:	Line 5610 zgo:
merr_raise (NOPGM);	merr_raise (NOPGM);

break;	break;
} /error /	} /* error */

stcpy (varnam, rou_name);	stcpy (varnam, rou_name);
}	}
Line 5335 zgo:	Line 5628 zgo:
}	}

zsave (varnam);	zsave (varnam);
	ssvn_routine_update ();
break;	break;


Line 5453 zgo:	Line 5747 zgo:
if (codptr == EOL \|\| codptr == SP) {	if (codptr == EOL \|\| codptr == SP) {
merr_raise (ARGLIST);	merr_raise (ARGLIST);
break;	break;
} /error /	} /* error */

dosave[0] = EOL;	dosave[0] = EOL;

/* parse stringlit */	/* parse strlit */
expr (STRING);	expr (STRING);

if (merr () > OK) break;	if (merr () > OK) break;
Line 5566 zgo:	Line 5860 zgo:
}	}

if ((*(beg + 1)) == EOL) break;	if ((*(beg + 1)) == EOL) break;

write_m (beg + 1);	write_m (beg + 1);
if (merr () > OK) break;	if (merr () > OK) break;
}	}
Line 6653 syn_evt_loop_bottom:	Line 6947 syn_evt_loop_bottom:
if (ch != ',' && merr () == OK) {	if (ch != ',' && merr () == OK) {
merr_raise (SPACER);	merr_raise (SPACER);
}	}
else if ((ierr <= OK) \|\| (debug_mode == TRUE)) {	else if (ierr <= OK) {
if (debug_mode) goto direct_mode;
if (++codptr != SP && codptr != EOL) goto again;	if (++codptr != SP && codptr != EOL) goto again;

merr_raise (ARGLIST);	merr_raise (ARGLIST);
Line 6696 err:	Line 6989 err:
}	}
}	}


if (merr () > OK ) {	if (merr () > OK ) {

char er_buf[ERRLEN];	char er_buf[ERRLEN];
Line 6705 err:	Line 6999 err:
stcpy (er_buf, errmes[merr ()]);	stcpy (er_buf, errmes[merr ()]);
stcnv_m2c (er_buf);	stcnv_m2c (er_buf);


#if !defined(MSDOS)	#if !defined(MSDOS)
m_log (LOG_ERR, er_buf);	logprintf (FM_LOG_DEBUG, "xecline: interpreter error %d [%s]", ierr, er_buf);
#endif	#endif

}	}
Line 7077 restart:	Line 7372 restart:


free (t_nsn);	free (t_nsn);

}	}


Line 7138 restore:	Line 7434 restore:

goto next_cmnd;	goto next_cmnd;
}	}
else {
if (debug_mode) goto direct_mode;
}

if (libcall == TRUE) { /* library mode: don't go to direct mode, just return */	if (libcall == TRUE) { /* library mode: don't go to direct mode, just return */
return merr ();	return merr ();
Line 7169 direct_mode:	Line 7462 direct_mode:
int hist_idx;	int hist_idx;
HIST_ENTRY *hist_ent;	HIST_ENTRY *hist_ent;

	rl_attempted_completion_function = command_completion;

if (quiet_mode == FALSE) {	if (quiet_mode == FALSE) {
if (tp_level == 0) {	if (tp_level == 0) {
snprintf (fmrl_prompt, sizeof (fmrl_prompt) - 1, "\r\n%s.%s> ", shm_env, nsname);	snprintf (fmrl_prompt, sizeof (fmrl_prompt) - 1, "\r\n%s.%s> ", shm_env, nsname);
Line 7180 direct_mode:	Line 7475 direct_mode:
set_io (UNIX);	set_io (UNIX);

job_set_status (pid, JSTAT_DIRECTMODE);	job_set_status (pid, JSTAT_DIRECTMODE);

	#if defined(__NetBSD__)
	printf ("\r\n");
	#endif

/* readline() does its own malloc() */	/* readline() does its own malloc() */
fmrl_buf = readline (fmrl_prompt);	fmrl_buf = readline (fmrl_prompt);

Line 7191 direct_mode:	Line 7490 direct_mode:

goto halt;	goto halt;
}	}


if (strlen (fmrl_buf) > 0) {	if (strlen (fmrl_buf) > 0) {
add_history (fmrl_buf);	add_history (fmrl_buf);
Line 7201 direct_mode:	Line 7501 direct_mode:
char kb[20];	char kb[20];
char db[STRLEN];	char db[STRLEN];

snprintf (kb, sizeof (kb) - 1, "%%SYS.HLP\201");	snprintf (kb, sizeof (kb) - 1, "%%SYSHLP\201");
snprintf (db, STRLEN - 1, "\201");	snprintf (db, STRLEN - 1, "\201");

symtab (kill_sym, kb, db);	symtab (kill_sym, kb, db);
Line 7217 direct_mode:	Line 7517 direct_mode:
}	}

}	}
else if (strcmp (fmrl_buf, "step") == 0) {
debug_mode = TRUE;
goto zgo;
}
else if ((strcmp (fmrl_buf, "cont") == 0) \|\| (strcmp (fmrl_buf, "continue") == 0)) {
debug_mode = FALSE;
}
else if (strcmp (fmrl_buf, "rbuf") == 0) {	else if (strcmp (fmrl_buf, "rbuf") == 0) {
rbuf_dump ();	rbuf_dump ();
}	}

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Removed from v.1.14
changed lines
	Added in v.1.30