path: root/usr.bin/f2c/sysdep.c

/****************************************************************
Copyright 1990 - 1994 by AT&T Bell Laboratories and Bellcore.

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 names of AT&T Bell Laboratories or
Bellcore or any of their entities not be used in advertising or
publicity pertaining to distribution of the software without
specific, written prior permission.

AT&T and Bellcore disclaim all warranties with regard to this
software, including all implied warranties of merchantability
and fitness.  In no event shall AT&T or Bellcore 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 "defs.h"
#include "usignal.h"

char binread[] = "rb", textread[] = "r";
char binwrite[] = "wb", textwrite[] = "w";
char *c_functions	= "c_functions";
char *coutput		= "c_output";
char *initfname		= "raw_data";
char *initbname		= "raw_data.b";
char *blkdfname		= "block_data";
char *p1_file		= "p1_file";
char *p1_bakfile	= "p1_file.BAK";
char *sortfname		= "init_file";
char *proto_fname	= "proto_file";

char link_msg[]		= "-lf2c -lm"; /* was "-lF77 -lI77 -lm -lc"; */

char *outbuf = "", *outbtail;

#ifndef TMPDIR
#ifdef MSDOS
#define TMPDIR ""
#else
#define TMPDIR "/tmp"
#endif
#endif

char *tmpdir = TMPDIR;
#ifndef MSDOS
#ifndef KR_headers
extern int getpid(void);
#endif
#endif

 void
#ifdef KR_headers
Un_link_all(cdelete)
	int cdelete;
#else
Un_link_all(int cdelete)
#endif
{
#ifndef KR_headers
	extern int unlink(const char *);
#endif
	if (!debugflag) {
		unlink(c_functions);
		unlink(initfname);
		unlink(p1_file);
		unlink(sortfname);
		unlink(blkdfname);
		if (cdelete && coutput)
			unlink(coutput);
		}
	}

 void
set_tmp_names(Void)
{
	int k;
	if (debugflag == 1)
		return;
	k = strlen(tmpdir) + 16;
	c_functions = (char *)ckalloc(7*k);
	initfname = c_functions + k;
	initbname = initfname + k;
	blkdfname = initbname + k;
	p1_file = blkdfname + k;
	p1_bakfile = p1_file + k;
	sortfname = p1_bakfile + k;
	{
#ifdef MSDOS
	char buf[64], *s, *t;
	if (!*tmpdir || *tmpdir == '.' && !tmpdir[1])
		t = "";
	else {
		/* substitute \ for / to avoid confusion with a
		 * switch indicator in the system("sort ...")
		 * call in formatdata.c
		 */
		for(s = tmpdir, t = buf; *s; s++, t++)
			if ((*t = *s) == '/')
				*t = '\\';
		if (t[-1] != '\\')
			*t++ = '\\';
		*t = 0;
		t = buf;
		}
	sprintf(c_functions, "%sf2c_func", t);
	sprintf(initfname, "%sf2c_rd", t);
	sprintf(blkdfname, "%sf2c_blkd", t);
	sprintf(p1_file, "%sf2c_p1f", t);
	sprintf(p1_bakfile, "%sf2c_p1fb", t);
	sprintf(sortfname, "%sf2c_sort", t);
#else
	int pid = getpid();
	sprintf(c_functions, "%s/f2c%d_func", tmpdir, pid);
	sprintf(initfname, "%s/f2c%d_rd", tmpdir, pid);
	sprintf(blkdfname, "%s/f2c%d_blkd", tmpdir, pid);
	sprintf(p1_file, "%s/f2c%d_p1f", tmpdir, pid);
	sprintf(p1_bakfile, "%s/f2c%d_p1fb", tmpdir, pid);
	sprintf(sortfname, "%s/f2c%d_sort", tmpdir, pid);
#endif
	sprintf(initbname, "%s.b", initfname);
	}
	if (debugflag)
		fprintf(diagfile, "%s %s %s %s %s %s\n", c_functions,
			initfname, blkdfname, p1_file, p1_bakfile, sortfname);
	}

 char *
#ifdef KR_headers
c_name(s, ft)
	char *s;
	int ft;
#else
c_name(char *s, int ft)
#endif
{
	char *b, *s0;
	int c;

	b = s0 = s;
	while(c = *s++)
		if (c == '/')
			b = s;
	if (--s < s0 + 3 || s[-2] != '.'
			 || ((c = *--s) != 'f' && c != 'F')) {
		infname = s0;
		Fatal("file name must end in .f or .F");
		}
	strcpy(outbtail, b);
	outbtail[s-b] = ft;
	b = copys(outbuf);
	return b;
	}

 static void
#ifdef KR_headers
killed(sig)
	int sig;
#else
killed(int sig)
#endif
{
	sig = sig;	/* shut up warning */
	signal(SIGINT, SIG_IGN);
#ifdef SIGQUIT
	signal(SIGQUIT, SIG_IGN);
#endif
#ifdef SIGHUP
	signal(SIGHUP, SIG_IGN);
#endif
	signal(SIGTERM, SIG_IGN);
	Un_link_all(1);
	exit(126);
	}

 static void
#ifdef KR_headers
sig1catch(sig)
	int sig;
#else
sig1catch(int sig)
#endif
{
	sig = sig;	/* shut up warning */
	if (signal(sig, SIG_IGN) != SIG_IGN)
		signal(sig, killed);
	}

 static void
#ifdef KR_headers
flovflo(sig)
	int sig;
#else
flovflo(int sig)
#endif
{
	sig = sig;	/* shut up warning */
	Fatal("floating exception during constant evaluation; cannot recover");
	/* vax returns a reserved operand that generates
	   an illegal operand fault on next instruction,
	   which if ignored causes an infinite loop.
	*/
	signal(SIGFPE, flovflo);
}

 void
#ifdef KR_headers
sigcatch(sig)
	int sig;
#else
sigcatch(int sig)
#endif
{
	sig = sig;	/* shut up warning */
	sig1catch(SIGINT);
#ifdef SIGQUIT
	sig1catch(SIGQUIT);
#endif
#ifdef SIGHUP
	sig1catch(SIGHUP);
#endif
	sig1catch(SIGTERM);
	signal(SIGFPE, flovflo);  /* catch overflows */
	}


dofork(Void)
{
#ifdef MSDOS
	Fatal("Only one Fortran input file allowed under MS-DOS");
#else
#ifndef KR_headers
	extern int fork(void), wait(int*);
#endif
	int pid, status, w;
	extern int retcode;

	if (!(pid = fork()))
		return 1;
	if (pid == -1)
		Fatal("bad fork");
	while((w = wait(&status)) != pid)
		if (w == -1)
			Fatal("bad wait code");
	retcode |= status >> 8;
#endif
	return 0;
	}

/* Initialization of tables that change with the character set... */

char escapes[Table_size];

#ifdef non_ASCII
char *str_fmt[Table_size];
static char *str0fmt[127] = { /*}*/
#else
char *str_fmt[Table_size] = {
#endif
 "\\000", "\\001", "\\002", "\\003", "\\004", "\\005", "\\006", "\\007",
   "\\b",   "\\t",   "\\n", "\\013",   "\\f",   "\\r", "\\016", "\\017",
 "\\020", "\\021", "\\022", "\\023", "\\024", "\\025", "\\026", "\\027",
 "\\030", "\\031", "\\032", "\\033", "\\034", "\\035", "\\036", "\\037",
     " ",     "!",  "\\\"",     "#",     "$",     "%%",    "&",     "'",
     "(",     ")",     "*",     "+",     ",",     "-",     ".",     "/",
     "0",     "1",     "2",     "3",     "4",     "5",     "6",     "7",
     "8",     "9",     ":",     ";",     "<",     "=",     ">",     "?",
     "@",     "A",     "B",     "C",     "D",     "E",     "F",     "G",
     "H",     "I",     "J",     "K",     "L",     "M",     "N",     "O",
     "P",     "Q",     "R",     "S",     "T",     "U",     "V",     "W",
     "X",     "Y",     "Z",     "[",  "\\\\",     "]",     "^",     "_",
     "`",     "a",     "b",     "c",     "d",     "e",     "f",     "g",
     "h",     "i",     "j",     "k",     "l",     "m",     "n",     "o",
     "p",     "q",     "r",     "s",     "t",     "u",     "v",     "w",
     "x",     "y",     "z",     "{",     "|",     "}",     "~"
     };

#ifdef non_ASCII
char *chr_fmt[Table_size];
static char *chr0fmt[127] = {	/*}*/
#else
char *chr_fmt[Table_size] = {
#endif
   "\\0",   "\\1",   "\\2",   "\\3",   "\\4",   "\\5",   "\\6",   "\\7",
   "\\b",   "\\t",   "\\n",  "\\13",   "\\f",   "\\r",  "\\16",  "\\17",
  "\\20",  "\\21",  "\\22",  "\\23",  "\\24",  "\\25",  "\\26",  "\\27",
  "\\30",  "\\31",  "\\32",  "\\33",  "\\34",  "\\35",  "\\36",  "\\37",
     " ",     "!",    "\"",     "#",     "$",     "%%",    "&",   "\\'",
     "(",     ")",     "*",     "+",     ",",     "-",     ".",     "/",
     "0",     "1",     "2",     "3",     "4",     "5",     "6",     "7",
     "8",     "9",     ":",     ";",     "<",     "=",     ">",     "?",
     "@",     "A",     "B",     "C",     "D",     "E",     "F",     "G",
     "H",     "I",     "J",     "K",     "L",     "M",     "N",     "O",
     "P",     "Q",     "R",     "S",     "T",     "U",     "V",     "W",
     "X",     "Y",     "Z",     "[",  "\\\\",     "]",     "^",     "_",
     "`",     "a",     "b",     "c",     "d",     "e",     "f",     "g",
     "h",     "i",     "j",     "k",     "l",     "m",     "n",     "o",
     "p",     "q",     "r",     "s",     "t",     "u",     "v",     "w",
     "x",     "y",     "z",     "{",     "|",     "}",     "~"
     };

 void
fmt_init(Void)
{
	static char *str1fmt[6] =
		{ "\\b", "\\t", "\\n", "\\f", "\\r", "\\%03o" };
	register int i, j;
	register char *s;

	/* str_fmt */

#ifdef non_ASCII
	i = 0;
#else
	i = 127;
#endif
	for(; i < Table_size; i++)
		str_fmt[i] = "\\%03o";
#ifdef non_ASCII
	for(i = 32; i < 127; i++) {
		s = str0fmt[i];
		str_fmt[*(unsigned char *)s] = s;
		}
	str_fmt['"'] = "\\\"";
#else
	if (Ansi == 1)
		str_fmt[7] = chr_fmt[7] = "\\a";
#endif

	/* chr_fmt */

#ifdef non_ASCII
	for(i = 0; i < 32; i++)
		chr_fmt[i] = chr0fmt[i];
#else
	i = 127;
#endif
	for(; i < Table_size; i++)
		chr_fmt[i] = "\\%o";
#ifdef non_ASCII
	for(i = 32; i < 127; i++) {
		s = chr0fmt[i];
		j = *(unsigned char *)s;
		if (j == '\\')
			j = *(unsigned char *)(s+1);
		chr_fmt[j] = s;
		}
#endif

	/* escapes (used in lex.c) */

	for(i = 0; i < Table_size; i++)
		escapes[i] = i;
	for(s = "btnfr0", i = 0; i < 6; i++)
		escapes[*(unsigned char *)s++] = "\b\t\n\f\r"[i];
	/* finish str_fmt and chr_fmt */

	if (Ansi)
		str1fmt[5] = "\\v";
	if ('\v' == 'v') { /* ancient C compiler */
		str1fmt[5] = "v";
#ifndef non_ASCII
		escapes['v'] = 11;
#endif
		}
	else
		escapes['v'] = '\v';
	for(s = "\b\t\n\f\r\v", i = 0; j = *(unsigned char *)s++;)
		str_fmt[j] = chr_fmt[j] = str1fmt[i++];
	/* '\v' = 11 for both EBCDIC and ASCII... */
	chr_fmt[11] = Ansi ? "\\v" : "\\13";
	}

 void
outbuf_adjust(Void)
{
	int n, n1;
	char *s;

	n = n1 = strlen(outbuf);
	if (*outbuf && outbuf[n-1] != '/')
		n1++;
	s = Alloc(n+64);
	outbtail = s + n1;
	strcpy(s, outbuf);
	if (n != n1)
		strcpy(s+n, "/");
	outbuf = s;
	}


/* Unless SYSTEM_SORT is defined, the following gives a simple
 * in-core version of dsort().  On Fortran source with huge DATA
 * statements, the in-core version may exhaust the available memory,
 * in which case you might either recompile this source file with
 * SYSTEM_SORT defined (if that's reasonable on your system), or
 * replace the dsort below with a more elaborate version that
 * does a merging sort with the help of auxiliary files.
 */

#ifdef SYSTEM_SORT

 int
#ifdef KR_headers
dsort(from, to)
	char *from;
	char *to;
#else
dsort(char *from, char *to)
#endif
{
	char buf[200];
	sprintf(buf, "sort <%s >%s", from, to);
	return system(buf) >> 8;
	}
#else

 static int
#ifdef KR_headers
 compare(a,b)
  char *a, *b;
#else
 compare(const void *a, const void *b)
#endif
{ return strcmp(*(char **)a, *(char **)b); }

#ifdef KR_headers
dsort(from, to)
	char *from;
	char *to;
#else
dsort(char *from, char *to)
#endif
{
	struct Memb {
		struct Memb *next;
		int n;
		char buf[32000];
		};
	typedef struct Memb memb;
	memb *mb, *mb1;
	register char *x, *x0, *xe;
	register int c, n;
	FILE *f;
	char **z, **z0;
	int nn = 0;

	f = opf(from, textread);
	mb = (memb *)Alloc(sizeof(memb));
	mb->next = 0;
	x0 = x = mb->buf;
	xe = x + sizeof(mb->buf);
	n = 0;
	for(;;) {
		c = getc(f);
		if (x >= xe && (c != EOF || x != x0)) {
			if (!n)
				return 126;
			nn += n;
			mb->n = n;
			mb1 = (memb *)Alloc(sizeof(memb));
			mb1->next = mb;
			mb = mb1;
			memcpy(mb->buf, x0, n = x-x0);
			x0 = mb->buf;
			x = x0 + n;
			xe = x0 + sizeof(mb->buf);
			n = 0;
			}
		if (c == EOF)
			break;
		if (c == '\n') {
			++n;
			*x++ = 0;
			x0 = x;
			}
		else
			*x++ = c;
		}
	clf(&f, from, 1);
	f = opf(to, textwrite);
	if (x > x0) { /* shouldn't happen */
		*x = 0;
		++n;
		}
	mb->n = n;
	nn += n;
	if (!nn) /* shouldn't happen */
		goto done;
	z = z0 = (char **)Alloc(nn*sizeof(char *));
	for(mb1 = mb; mb1; mb1 = mb1->next) {
		x = mb1->buf;
		n = mb1->n;
		for(;;) {
			*z++ = x;
			if (--n <= 0)
				break;
			while(*x++);
			}
		}
	qsort((char *)z0, nn, sizeof(char *), compare);
	for(n = nn, z = z0; n > 0; n--)
		fprintf(f, "%s\n", *z++);
	free((char *)z0);
 done:
	clf(&f, to, 1);
	do {
		mb1 = mb->next;
		free((char *)mb);
		}
		while(mb = mb1);
	return 0;
	}
#endif