ack/lang/fortran/comp/sysdep.c

/****************************************************************
Copyright 1990 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 link_msg[]		= "-lF77 -lI77 -lm -lc";

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

char *tmpdir = TMPDIR;

 void
Un_link_all(cdelete)
{
	if (!debugflag) {
		unlink(c_functions);
		unlink(initfname);
		unlink(p1_file);
		unlink(sortfname);
		unlink(blkdfname);
		if (cdelete && coutput)
			unlink(coutput);
		}
	}

 void
set_tmp_names()
{
	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 *
c_name(s,ft)char *s;
{
	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");
		}
	*s = ft;
	b = copys(b);
	*s = c;
	return b;
	}

 static void
killed()
{
	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
sig1catch(sig) int sig;
{
	if (signal(sig, SIG_IGN) != SIG_IGN)
		signal(sig, killed);
	}

 static void
flovflo()
{
	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
sigcatch()
{
	sig1catch(SIGINT);
#ifdef SIGQUIT
	sig1catch(SIGQUIT);
#endif
#ifdef SIGHUP
	sig1catch(SIGHUP);
#endif
	sig1catch(SIGTERM);
	signal(SIGFPE, flovflo);  /* catch overflows */
	}


dofork()
{
#ifdef MSDOS
	Fatal("Only one Fortran input file allowed under MS-DOS");
#else
	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()
{
	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";
	}



/* 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

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

 static int
compare(a,b)
 char *a, *b;
{ return strcmp(*(char **)a, *(char **)b); }

dsort(from, to)
 char *from, *to;
{
	extern char *Alloc();

	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