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/* 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);
}
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