Initial commit

1 files changed, 255 insertions, 0 deletions

diff --git a/pkg/cl/errs.c b/pkg/cl/errs.c
new file mode 100644
index 00000000..a93cf8a2
--- /dev/null
+++ b/pkg/cl/errs.c
@@ -0,0 +1,255 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+ */
+
+#define	import_spp
+#define import_libc
+#define	import_fset
+#define	import_stdio
+#define import_setjmp
+#define import_knames
+#define	import_xnames
+#define	import_stdarg
+#include <iraf.h>
+
+#include "config.h"
+#include "clmodes.h"
+#include "operand.h"
+#include "param.h"
+#include "task.h"
+#include "mem.h"
+#include "errs.h"
+#include "grammar.h"
+#include "construct.h"
+#include "proto.h"
+
+
+/*
+ * ERRS -- When a runtime operation detects an error, it calls error with an
+ *   error type, a diagnostic string and some additional arguments. the type
+ *   determines the severity and prefix for the diagnostic. the diagnositic
+ *   and its args are written as an error message with doprnt.
+ * After the error message has been printed to our t_stderr, tasks are killed
+ *   until an interactive cl is found. the longjmp forces the last
+ *   setjmp (errenv) in main() to return and start the parser again.
+ *   thus, a call to error() never returns but forces a reset back to an
+ *   interactive state.
+ *
+ * Some frequently used diagnostic strings are defined here to avoid
+ *   repetition. The list may be expanded or ignored as desired when new
+ *   errors are added.
+ */
+extern	int errlev;		/* for detecting error recursion	*/
+extern	int bkgno;		/* bkg task number, if batch job	*/
+extern	int validerrenv;	/* set in main once get past login()	*/
+extern	int loggingout;		/* set while reading from logout file	*/
+extern	int gologout;		/* set when getting ready to " " "	*/
+extern	jmp_buf errenv;		/* setjmp() is in main().		*/
+
+char	*e_appopen =	"can not open `%s' for appending";
+char	*e_badstrop =	"illegal operation on string '%0.20s'";
+char	*e_badsw =	"bad switch case, %d, in `%s'";
+/* char	*e_edom =	"function argument outside valid range: %g"; */
+/* char	*e_erange =	"%g caused arithmetic overflow"; */
+/* char	*e_fpe =	"floating point exception"; */
+char	*e_geonearg =	"`%s' requires at least one argument";
+char	*e_indexunf=	"no indices on stack for array reference";
+char *e_nominmax = "structs, strings, cursors and booleans do not have ranges";
+char	*e_nopfile =	"task `%s' has no param file";
+char	*e_badpfile =	"cannot read parameter file `%s'";
+char	*e_nostrcnv =	"may not convert string to other types";
+/* char	*e_notbool =	"parameter `%s' is not boolean"; */
+char	*e_onearg =	"`%s' expects one argument";
+char	*e_pambig =	"ambiguous parameter `%s' within `%s'";
+char	*e_pckambig =	"ambiguous package `%s'";
+char	*e_pcknonexist=	"package `%s' not found";
+char	*e_posargs =	"too many positional arguments for `%s'";
+char	*e_pnonexist =	"parameter `%s' not found";
+char	*e_ropen =	"cannot open `%s' for reading";
+char	*e_simplep =	"use simple parameter name only for `%s'";
+char	*e_strplusreal= "attempt to add operand of type real to string `%s'";
+char	*e_soverflow =	"stack overflow (cs:%d,os:%d)";
+char	*e_sunderflow =	"stack underflow";
+char	*e_tambig =	"ambiguous task `%s'";
+char	*e_twoargs =	"`%s' expects two arguments";
+char	*e_tnonexist =	"task `%s' not found";
+/* char	*e_unlink =	"cannot remove file `%s'"; */
+char	*e_uopcode =	"undefined opcode %d";
+char	*e_wopen =	"cannot open `%s' for writing";
+char	*e_lookparm =	"error searching for parameter `%s'.";
+char	*e_invaldef=	"conflicting attributes in definition of `%s'.";
+char	*e_fdivzero =	"floating divide by zero";
+char	*e_idivzero =	"integer divide by zero";
+
+/* This variable is used to avoid duplicate error logging by the builtin
+ * clerror() and the error function cl_error() below.  When a script or 
+ * executable tasks calls the CL language 'error' function, the builtin
+ * clerror() logs the error message.  Otherwise, we'll log it here.
+ */
+int	errlog = 0;
+
+extern  int u_doprnt();
+
+
+/* CL_ERROR -- print error info according to errtype on our t_stderr, pop back
+ * to an interactive task and do a longjmp back to setjmp (errenv) in
+ * main(); thus, whomever calls error() should not expect it to return.
+ *  
+ * If errtype is or'd with E_P, also call perror() for more info.
+ * If we are a background task, print the task ordinal to tell the user
+ * which task aborted.
+ */
+void
+cl_error (int errtype, char *diagstr, ...)
+{
+	va_list	args;
+	register struct task *tp;
+	static	int nfatal = 0;
+	static	int break_locks = 1;
+
+	va_start (args, diagstr);
+
+	/* Safety measure, in the event of error recursion.
+	 */
+	if (nfatal)
+	    clexit();
+
+	if (errlev++ > 2) {
+	    nfatal++;
+	    eprintf ("Error recursion.  Cl dies.\n");
+	    clexit();
+	}
+
+	/* The first setjmp(errenv) is not done until we start the main loop.
+ 	 * Set validerrenv when start the first interactive cl to indicate that
+	 * we may safely longjmp back to main's loop on an error.  ERRENV is
+	 * not set for bkg jobs since error restart is not permitted.
+	 */
+	if (!validerrenv && !(firstask->t_flags & T_BATCH)) {
+	    nfatal++;
+            u_doprnt (diagstr, &args, currentask->t_stderr);
+	    if (errtype & E_P)
+	        perror ("\nOS errmsg");
+	    else
+		eprintf ("\n");
+	    eprintf ("Fatal startup error.  CL dies.\n");
+	    clexit();
+	}
+
+	/* Any error occurring during logout is fatal.
+	 */
+	if (loggingout || gologout) {
+	    nfatal++;
+            u_doprnt (diagstr, &args, currentask->t_stderr);
+	    if (errtype & E_P)
+	        perror ("\nOS errmsg");
+	    else
+		eprintf ("\n");
+	    eprintf ("Fatal logout error.  CL dies.\n");
+	    clexit();
+	}
+
+	/* Perform any ONERROR error recovery in the vos first.  Initialize
+	 * the error recovery mechanism (necessary since the iraf main is not
+	 * being allowed to do error recovery).
+	 */
+	c_xonerr (1);
+	XER_RESET();	/* TODO: move into LIBC interface */
+
+	/* Clear terminal raw mode if still set. */
+	c_fseti ((XINT)STDIN, F_RAW, NO);
+
+	if (firstask->t_flags & T_BATCH)
+	    eprintf ("\n[%d] ", bkgno);
+	if (errtype & E_IERR)
+	    eprintf ("INTERNAL ");
+	if (errtype & E_FERR)
+	    eprintf ("FATAL ");
+	if (currentask->t_flags & T_SCRIPT)
+	    eprintf ("ERROR on line %d: ", currentask->t_scriptln);
+	else
+	    eprintf ("ERROR: ");
+
+	u_doprnt (diagstr, &args, currentask->t_stderr);
+	if (errtype & E_P)
+	    perror ("\nOS errmsg");
+	else
+	    eprintf ("\n");
+
+	/* Log the error message if from a script or an executable.
+	 */
+	if (!errlog && keeplog() && log_errors())
+	    if (currentask->t_flags & T_SCRIPT || currentask->t_pid != -1) {
+	    	PKCHAR  buf[SZ_LINE+1];
+		FILE	*fp;
+		int     fd;
+
+		fd = c_stropen (buf, SZ_LINE, NEW_FILE);
+		fp = fdopen (fd, "w");
+
+		fprintf (fp, "ERROR: ");
+		u_doprnt (diagstr, &args, fp);
+
+		fclose (fp);
+		c_close (fd);
+	    	putlog (currentask, c_strpak (buf, (char *)buf, SZ_LINE));
+	    }
+	errlog = 0;
+
+	/* Initialize the current command block but do not log the command
+	 * which aborted.
+	 */
+	yy_startblock (NOLOG);
+
+	/* Delete all pipefiles.  Call iofinish() first as some OS's may
+	 * require that the files be closed before they can be deleted.
+	 */
+	for (tp=currentask;  !(tp->t_flags & T_INTERACTIVE); tp=next_task(tp)) {
+	    iofinish (tp);
+	    if (tp == firstask)
+		break;
+	}
+	delpipes (0);
+
+	/* Do not go on if this is a fatal error or we are unattended.
+	 */
+	if (errtype & E_FERR) {
+	    nfatal++;
+	    pr_dumpcache (0, break_locks);
+	    clexit();
+	} else if (firstask->t_flags & T_BATCH)
+	    clshutdown();
+
+	/* Reset state variables. */
+	/* Most of these probably needn't be reset, but we'll play
+	 * it safe.
+	 */
+	nestlevel = 0;		/* Set nesting to 0.		*/
+	offsetmode (0);		/* Offset mode to index.	*/
+	ncaseval = 0;		/* Number of case values.	*/
+	n_indexes = 0;
+	imloopset = 0;		/* In an implicit loop.		*/
+	n_oarr = 0;		/* Implicit loop indicators.	*/
+	i_oarr = 0;
+	maybeindex = 0;		/* sexagesimal/index range	*/
+	parse_state = PARSE_FREE;
+	if (last_parm) {	/* Have we tried to add a param	*/
+	    last_parm->p_np = NULL;
+	    currentask->t_pfp->pf_lastpp = last_parm;
+	    last_parm = NULL;
+	}
+
+
+	/* Get back to an interactive state.
+	 */
+	taskunwind();
+
+	/* If an abort occurs while interrupts are disabled they will never get
+	 * reenabled unless we do so here.
+	 */
+	intr_reset();
+
+	/* Go back to main loop in main().
+	 */
+	va_end (args);
+	longjmp (errenv, 1);
+}