/****************************************************************
Copyright (C) 1997-2001 Lucent Technologies
All Rights Reserved

Permission to use, copy, modify, and distribute this software and
its documentation for any purpose and without fee is hereby
granted, provided that the above copyright notice appear in all
copies and that both that the copyright notice and this
permission notice and warranty disclaimer appear in supporting
documentation, and that the name of Lucent or any of its entities
not be used in advertising or publicity pertaining to
distribution of the software without specific, written prior
permission.

LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
THIS SOFTWARE.
****************************************************************/

#include "asl.h"

#ifdef __cplusplus
extern "C" {
#endif

extern void fpinit_ASL(VOID);

 extern int Sscanf(char*, const char*, ...);

#undef Want_bswap
#ifdef IEEE_MC68k
#define Want_bswap
#endif
#ifdef IEEE_8087
#define Want_bswap
#endif
jmp_buf Jb;
#ifdef Want_bswap

 void
bswap_ASL(void *x, size_t L)
{
	char *s = (char*)x;
	int t;
	switch(L) {
	 case 2:
		t = s[0]; s[0] = s[1]; s[1] = t;
		break;
	 case 4:
		t = s[0]; s[0] = s[3]; s[3] = t;
		t = s[1]; s[1] = s[2]; s[2] = t;
		break;
	 case 8:
		t = s[0]; s[0] = s[7]; s[7] = t;
		t = s[1]; s[1] = s[6]; s[6] = t;
		t = s[2]; s[2] = s[5]; s[5] = t;
		t = s[3]; s[3] = s[4]; s[4] = t;
	 }
	}

#endif /* Want_bswap */

 static void
badfmt(EdRead *R)
{
	if (R->return_nofile & 2)
		longjmp(Jb, 1);
	badread(R);
	fprintf(Stderr, "Unrecognized binary format.\n");
	exit(1);
	}

 static void
badints(EdRead *R, int got, int wanted)
{
	if (R->return_nofile & 2)
		longjmp(Jb, 1);
	badread(R);
	fprintf(Stderr, "got only %d integers; wanted %d\n", got, wanted);
	exit(1);
	}

 static void
read2(EdRead *R, int *x, int *y)
{
	char *s;
	int k;

	s = read_line(R);
	k = Sscanf(s, " %d %d", x, y);
	if (k != 2)
		badints(R, k, 2);
	}

#define ndcc asl->i.ndcc_
#define nzlb asl->i.nzlb_

 FILE *
jac0dim_ASL(ASL *asl, const char *stub, ftnlen stub_len)
{
	FILE *nl;
	int i, k, nlv;
	char *s, *se;
	const char *opfmt;
	EdRead ER, *R;

	if (!asl)
		badasl_ASL(asl,0,"jac0dim");
	fpinit_ASL();	/* get IEEE arithmetic, if possible */

	if (stub_len <= 0)
		for(i = 0; stub[i]; i++);
	else
		for(i = stub_len; stub[i-1] == ' ' && i > 0; --i);
	filename = (char *)M1alloc(i + 5);
	s = stub_end = filename + i;
	strncpy(filename, stub, i);
	strcpy(s, ".nl");
	nl = fopen(filename, "rb");
	if (!nl && i > 3 && !strncmp(s-3, ".nl", 3)) {
		*s = 0;
		stub_end = s - 3;
		nl = fopen(filename, "rb");
		}
	if (!nl) {
		if (return_nofile & 1)
			return 0;
		fflush(stdout);
		what_prog();
		fprintf(Stderr, "can't open %s\n", filename);
		exit(1);
		}
	if (return_nofile & 2) {
		if (setjmp(Jb))
			return 0;
		}
	R = EdReadInit_ASL(&ER, asl, nl, 0);
	R->Line = 0;
	s = read_line(R);
	binary_nl = 0;
	opfmt = "%d";
	switch(*s) {
#ifdef DEPRECATED
		case 'E':	/* deprecated "-oe" format */
			{int ncsi = 0;
			k = Sscanf(s, "E%d %d %d %d %d %d", &n_var, &n_con,
				&n_obj, &maxrownamelen, &maxcolnamelen, &ncsi);
			if (k < 5)
				badints(R, k, 5);
			if (ncsi) {
				if (ncsi != 6) {
					if (return_file & 2)
						return 0;
					badread(R);
					fprintf(Stderr,
					 "expected 6th integer to be 0 or 6, not %d\n",
						ncsi);
					exit(1);
					}
				s = read_line(R);
				k = Sscanf(s, " %d %d %d %d %d %d",
					&comb, &comc, &como, &comc1, &como1, &nfunc);
				if (k != 6)
					badints(R, k, 6);
				}
			}
			break;
#endif
		case 'z':
		case 'Z':
			opfmt = "%hd";
		case 'B':
		case 'b':
			binary_nl = 1;
			xscanf = bscanf;
			goto have_xscanf;
		case 'h':
		case 'H':
			opfmt = "%hd";
			binary_nl = 1;
			xscanf = hscanf;
			goto have_xscanf;
		case 'G':
		case 'g':
			xscanf = ascanf;
 have_xscanf:
			if ((k = ampl_options[0] = strtol(++s, &se, 10))) {
				if (k > 9) {
					fprintf(Stderr,
					"ampl_options = %d is too large\n", k);
					exit(1);
					}
				for(i = 1; i <= k && se > s; i++)
					ampl_options[i] = strtol(s = se,&se,10);
				if (ampl_options[2] == 3)
					ampl_vbtol = strtod(s = se, &se);
				}
			s = read_line(R);
			n_eqn = -1;
			k = Sscanf(s, " %d %d %d %d %d %d", &n_var, &n_con,
				&n_obj, &nranges, &n_eqn, &n_lcon);
			if (k < 3)
				badints(R,k,3);
			nclcon = n_con + n_lcon;

			/* formerly read2(R, &nlc, &nlo); */
			s = read_line(R);
			n_cc = nlcc = ndcc = nzlb = 0;
			k = Sscanf(s, " %d %d %d %d %d %d", &nlc, &nlo, &n_cc, &nlcc,
					&ndcc, &nzlb);
			if (k < 2)
				badints(R,k,2);
			asl->i.nlc0 = nlc;
			asl->i.nlo0 = nlo;
			if ((n_cc += nlcc) > 0 && k < 6)
				ndcc = -1; /* indicate unknown */

			read2(R, &nlnc, &lnc);
			nlvb = -1;
			s = read_line(R);
			k = Sscanf(s, " %d %d %d", &nlvc, &nlvo, &nlvb);
			if (k < 2)
				badints(R,k,2);

			/* read2(R, &nwv, &nfunc); */
			s = read_line(R);
			asl->i.flags = 0;
			k = Sscanf(s, " %d %d %d %d", &nwv, &nfunc, &i,
				&asl->i.flags);
			if (k < 2)
				badints(R,k,2);
			else if (k >= 3 && i != Arith_Kind_ASL && i) {
#ifdef Want_bswap
				if (i > 0 && i + Arith_Kind_ASL == 3) {
					asl->i.iadjfcn = asl->i.dadjfcn = bswap_ASL;
					binary_nl = i << 1;
					}
				else
#endif
					badfmt(R);
				}

			if (nlvb < 0)	/* ampl versions < 19930630 */
				read2(R, &nbv, &niv);
			else {
				s = read_line(R);
				k = Sscanf(s, " %d %d %d %d %d", &nbv, &niv,
					&nlvbi, &nlvci, &nlvoi);
				if (k != 5)
					badints(R,k,5);
				}
			/* formerly read2(R, &nzc, &nzo); */
			s = read_line(R);
			k = Sscanf(s, " %D %D", &nZc, &nZo);
			if (k != 2)
				badints(R, k, 2);
			nzc = nZc;
			nzo = nZo;
			read2(R, &maxrownamelen, &maxcolnamelen);
			s = read_line(R);
			k = Sscanf(s, " %d %d %d %d %d", &comb, &comc, &como,
					&comc1, &como1);
			if (k != 5)
				badints(R,k,5);
		}
	student_check_ASL(asl);
	if (n_con < 0 || n_var <= 0 || n_obj < 0) {
		what_prog();
		fprintf(Stderr,
		"jacdim: got M = %d, N = %d, NO = %d\n", n_con, n_var, n_obj);
		exit(1);
		}
	asl->i.opfmt = opfmt;
	asl->i.n_var0 = asl->i.n_var1 = n_var;
	asl->i.n_con0 = asl->i.n_con1 = n_con;
	if ((nlv = nlvc) < nlvo)
		nlv = nlvo;
	x0len = nlv * sizeof(real);
	x0kind = ASL_first_x;
	n_conjac[0] = 0;
	n_conjac[1] = n_con;
	c_vars = o_vars = n_var;	/* confusion arises otherwise */
	return nl;
	}

 FILE *
jac_dim_ASL(ASL *asl, const char *stub, fint *M, fint *N, fint *NO, fint *NZ,
		fint *MXROW, fint *MXCOL, fint stub_len)
{
	FILE *nl;

	if ((nl = jac0dim_ASL(asl, stub, stub_len))) {
		*M = n_con;
		*N = n_var;
		*NO = n_obj;
		*NZ = nzc;
		*MXROW = maxrownamelen;
		*MXCOL = maxcolnamelen;
		}
	return nl;
	}

#ifdef __cplusplus
	}
#endif