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path: root/gcc/f/runtime/libI77/rsne.c
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Diffstat (limited to 'gcc/f/runtime/libI77/rsne.c')
-rw-r--r--gcc/f/runtime/libI77/rsne.c607
1 files changed, 607 insertions, 0 deletions
diff --git a/gcc/f/runtime/libI77/rsne.c b/gcc/f/runtime/libI77/rsne.c
new file mode 100644
index 00000000000..86bb2164f12
--- /dev/null
+++ b/gcc/f/runtime/libI77/rsne.c
@@ -0,0 +1,607 @@
+#include "f2c.h"
+#include "fio.h"
+#include "lio.h"
+
+#define MAX_NL_CACHE 3 /* maximum number of namelist hash tables to cache */
+#define MAXDIM 20 /* maximum number of subscripts */
+
+ struct dimen {
+ ftnlen extent;
+ ftnlen curval;
+ ftnlen delta;
+ ftnlen stride;
+ };
+ typedef struct dimen dimen;
+
+ struct hashentry {
+ struct hashentry *next;
+ char *name;
+ Vardesc *vd;
+ };
+ typedef struct hashentry hashentry;
+
+ struct hashtab {
+ struct hashtab *next;
+ Namelist *nl;
+ int htsize;
+ hashentry *tab[1];
+ };
+ typedef struct hashtab hashtab;
+
+ static hashtab *nl_cache;
+ static int n_nlcache;
+ static hashentry **zot;
+ static int colonseen;
+ extern ftnlen f__typesize[];
+
+ extern flag f__lquit;
+ extern int f__lcount, nml_read;
+ extern t_getc(Void);
+
+#ifdef KR_headers
+ extern char *malloc(), *memset();
+
+#ifdef ungetc
+ static int
+un_getc(x,f__cf) int x; FILE *f__cf;
+{ return ungetc(x,f__cf); }
+#else
+#define un_getc ungetc
+ extern int ungetc();
+#endif
+
+#else
+#undef abs
+#undef min
+#undef max
+#include <stdlib.h>
+#include <string.h>
+
+#ifdef ungetc
+ static int
+un_getc(int x, FILE *f__cf)
+{ return ungetc(x,f__cf); }
+#else
+#define un_getc ungetc
+extern int ungetc(int, FILE*); /* for systems with a buggy stdio.h */
+#endif
+#endif
+
+ static Vardesc *
+#ifdef KR_headers
+hash(ht, s) hashtab *ht; register char *s;
+#else
+hash(hashtab *ht, register char *s)
+#endif
+{
+ register int c, x;
+ register hashentry *h;
+ char *s0 = s;
+
+ for(x = 0; c = *s++; x = x & 0x4000 ? ((x << 1) & 0x7fff) + 1 : x << 1)
+ x += c;
+ for(h = *(zot = ht->tab + x % ht->htsize); h; h = h->next)
+ if (!strcmp(s0, h->name))
+ return h->vd;
+ return 0;
+ }
+
+ hashtab *
+#ifdef KR_headers
+mk_hashtab(nl) Namelist *nl;
+#else
+mk_hashtab(Namelist *nl)
+#endif
+{
+ int nht, nv;
+ hashtab *ht;
+ Vardesc *v, **vd, **vde;
+ hashentry *he;
+
+ hashtab **x, **x0, *y;
+ for(x = &nl_cache; y = *x; x0 = x, x = &y->next)
+ if (nl == y->nl)
+ return y;
+ if (n_nlcache >= MAX_NL_CACHE) {
+ /* discard least recently used namelist hash table */
+ y = *x0;
+ free((char *)y->next);
+ y->next = 0;
+ }
+ else
+ n_nlcache++;
+ nv = nl->nvars;
+ if (nv >= 0x4000)
+ nht = 0x7fff;
+ else {
+ for(nht = 1; nht < nv; nht <<= 1);
+ nht += nht - 1;
+ }
+ ht = (hashtab *)malloc(sizeof(hashtab) + (nht-1)*sizeof(hashentry *)
+ + nv*sizeof(hashentry));
+ if (!ht)
+ return 0;
+ he = (hashentry *)&ht->tab[nht];
+ ht->nl = nl;
+ ht->htsize = nht;
+ ht->next = nl_cache;
+ nl_cache = ht;
+ memset((char *)ht->tab, 0, nht*sizeof(hashentry *));
+ vd = nl->vars;
+ vde = vd + nv;
+ while(vd < vde) {
+ v = *vd++;
+ if (!hash(ht, v->name)) {
+ he->next = *zot;
+ *zot = he;
+ he->name = v->name;
+ he->vd = v;
+ he++;
+ }
+ }
+ return ht;
+ }
+
+static char Alpha[256], Alphanum[256];
+
+ static VOID
+nl_init(Void) {
+ register char *s;
+ register int c;
+
+ for(s = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; c = *s++; )
+ Alpha[c]
+ = Alphanum[c]
+ = Alpha[c + 'a' - 'A']
+ = Alphanum[c + 'a' - 'A']
+ = c;
+ for(s = "0123456789_"; c = *s++; )
+ Alphanum[c] = c;
+ }
+
+#define GETC(x) (x=(*l_getc)())
+#define Ungetc(x,y) (*l_ungetc)(x,y)
+
+ static int
+#ifdef KR_headers
+getname(s, slen) register char *s; int slen;
+#else
+getname(register char *s, int slen)
+#endif
+{
+ register char *se = s + slen - 1;
+ register int ch;
+
+ GETC(ch);
+ if (!(*s++ = Alpha[ch & 0xff])) {
+ if (ch != EOF)
+ ch = 115;
+ errfl(f__elist->cierr, ch, "namelist read");
+ }
+ while(*s = Alphanum[GETC(ch) & 0xff])
+ if (s < se)
+ s++;
+ if (ch == EOF)
+ err(f__elist->cierr, EOF, "namelist read");
+ if (ch > ' ')
+ Ungetc(ch,f__cf);
+ return *s = 0;
+ }
+
+ static int
+#ifdef KR_headers
+getnum(chp, val) int *chp; ftnlen *val;
+#else
+getnum(int *chp, ftnlen *val)
+#endif
+{
+ register int ch, sign;
+ register ftnlen x;
+
+ while(GETC(ch) <= ' ' && ch >= 0);
+ if (ch == '-') {
+ sign = 1;
+ GETC(ch);
+ }
+ else {
+ sign = 0;
+ if (ch == '+')
+ GETC(ch);
+ }
+ x = ch - '0';
+ if (x < 0 || x > 9)
+ return 115;
+ while(GETC(ch) >= '0' && ch <= '9')
+ x = 10*x + ch - '0';
+ while(ch <= ' ' && ch >= 0)
+ GETC(ch);
+ if (ch == EOF)
+ return EOF;
+ *val = sign ? -x : x;
+ *chp = ch;
+ return 0;
+ }
+
+ static int
+#ifdef KR_headers
+getdimen(chp, d, delta, extent, x1)
+ int *chp; dimen *d; ftnlen delta, extent, *x1;
+#else
+getdimen(int *chp, dimen *d, ftnlen delta, ftnlen extent, ftnlen *x1)
+#endif
+{
+ register int k;
+ ftnlen x2, x3;
+
+ if (k = getnum(chp, x1))
+ return k;
+ x3 = 1;
+ if (*chp == ':') {
+ if (k = getnum(chp, &x2))
+ return k;
+ x2 -= *x1;
+ if (*chp == ':') {
+ if (k = getnum(chp, &x3))
+ return k;
+ if (!x3)
+ return 123;
+ x2 /= x3;
+ colonseen = 1;
+ }
+ if (x2 < 0 || x2 >= extent)
+ return 123;
+ d->extent = x2 + 1;
+ }
+ else
+ d->extent = 1;
+ d->curval = 0;
+ d->delta = delta;
+ d->stride = x3;
+ return 0;
+ }
+
+#ifndef No_Namelist_Questions
+ static Void
+#ifdef KR_headers
+print_ne(a) cilist *a;
+#else
+print_ne(cilist *a)
+#endif
+{
+ flag intext = f__external;
+ int rpsave = f__recpos;
+ FILE *cfsave = f__cf;
+ unit *usave = f__curunit;
+ cilist t;
+ t = *a;
+ t.ciunit = 6;
+ s_wsne(&t);
+ fflush(f__cf);
+ f__external = intext;
+ f__reading = 1;
+ f__recpos = rpsave;
+ f__cf = cfsave;
+ f__curunit = usave;
+ f__elist = a;
+ }
+#endif
+
+ static char where0[] = "namelist read start ";
+
+#ifdef KR_headers
+x_rsne(a) cilist *a;
+#else
+x_rsne(cilist *a)
+#endif
+{
+ int ch, got1, k, n, nd, quote, readall;
+ Namelist *nl;
+ static char where[] = "namelist read";
+ char buf[64];
+ hashtab *ht;
+ Vardesc *v;
+ dimen *dn, *dn0, *dn1;
+ ftnlen *dims, *dims1;
+ ftnlen b, b0, b1, ex, no, no1, nomax, size, span;
+ ftnint type;
+ char *vaddr;
+ long iva, ivae;
+ dimen dimens[MAXDIM], substr;
+
+ if (!Alpha['a'])
+ nl_init();
+ f__reading=1;
+ f__formatted=1;
+ got1 = 0;
+ top:
+ for(;;) switch(GETC(ch)) {
+ case EOF:
+ eof:
+ err(a->ciend,(EOF),where0);
+ case '&':
+ case '$':
+ goto have_amp;
+#ifndef No_Namelist_Questions
+ case '?':
+ print_ne(a);
+ continue;
+#endif
+ default:
+ if (ch <= ' ' && ch >= 0)
+ continue;
+#ifndef No_Namelist_Comments
+ while(GETC(ch) != '\n')
+ if (ch == EOF)
+ goto eof;
+#else
+ errfl(a->cierr, 115, where0);
+#endif
+ }
+ have_amp:
+ if (ch = getname(buf,(int) sizeof(buf)))
+ return ch;
+ nl = (Namelist *)a->cifmt;
+ if (strcmp(buf, nl->name))
+#ifdef No_Bad_Namelist_Skip
+ errfl(a->cierr, 118, where0);
+#else
+ {
+ fprintf(stderr,
+ "Skipping namelist \"%s\": seeking namelist \"%s\".\n",
+ buf, nl->name);
+ fflush(stderr);
+ for(;;) switch(GETC(ch)) {
+ case EOF:
+ err(a->ciend, EOF, where0);
+ case '/':
+ case '&':
+ case '$':
+ if (f__external)
+ e_rsle();
+ else
+ z_rnew();
+ goto top;
+ case '"':
+ case '\'':
+ quote = ch;
+ more_quoted:
+ while(GETC(ch) != quote)
+ if (ch == EOF)
+ err(a->ciend, EOF, where0);
+ if (GETC(ch) == quote)
+ goto more_quoted;
+ Ungetc(ch,f__cf);
+ default:
+ continue;
+ }
+ }
+#endif
+ ht = mk_hashtab(nl);
+ if (!ht)
+ errfl(f__elist->cierr, 113, where0);
+ for(;;) {
+ for(;;) switch(GETC(ch)) {
+ case EOF:
+ if (got1)
+ return 0;
+ err(a->ciend, EOF, where0);
+ case '/':
+ case '$':
+ case '&':
+ return 0;
+ default:
+ if (ch <= ' ' && ch >= 0 || ch == ',')
+ continue;
+ Ungetc(ch,f__cf);
+ if (ch = getname(buf,(int) sizeof(buf)))
+ return ch;
+ goto havename;
+ }
+ havename:
+ v = hash(ht,buf);
+ if (!v)
+ errfl(a->cierr, 119, where);
+ while(GETC(ch) <= ' ' && ch >= 0);
+ vaddr = v->addr;
+ type = v->type;
+ if (type < 0) {
+ size = -type;
+ type = TYCHAR;
+ }
+ else
+ size = f__typesize[type];
+ ivae = size;
+ iva = readall = 0;
+ if (ch == '(' /*)*/ ) {
+ dn = dimens;
+ if (!(dims = v->dims)) {
+ if (type != TYCHAR)
+ errfl(a->cierr, 122, where);
+ if (k = getdimen(&ch, dn, (ftnlen)size,
+ (ftnlen)size, &b))
+ errfl(a->cierr, k, where);
+ if (ch != ')')
+ errfl(a->cierr, 115, where);
+ b1 = dn->extent;
+ if (--b < 0 || b + b1 > size)
+ return 124;
+ iva += b;
+ size = b1;
+ while(GETC(ch) <= ' ' && ch >= 0);
+ goto scalar;
+ }
+ nd = (int)dims[0];
+ nomax = span = dims[1];
+ ivae = iva + size*nomax;
+ colonseen = 0;
+ if (k = getdimen(&ch, dn, size, nomax, &b))
+ errfl(a->cierr, k, where);
+ no = dn->extent;
+ b0 = dims[2];
+ dims1 = dims += 3;
+ ex = 1;
+ for(n = 1; n++ < nd; dims++) {
+ if (ch != ',')
+ errfl(a->cierr, 115, where);
+ dn1 = dn + 1;
+ span /= *dims;
+ if (k = getdimen(&ch, dn1, dn->delta**dims,
+ span, &b1))
+ errfl(a->cierr, k, where);
+ ex *= *dims;
+ b += b1*ex;
+ no *= dn1->extent;
+ dn = dn1;
+ }
+ if (ch != ')')
+ errfl(a->cierr, 115, where);
+ readall = 1 - colonseen;
+ b -= b0;
+ if (b < 0 || b >= nomax)
+ errfl(a->cierr, 125, where);
+ iva += size * b;
+ dims = dims1;
+ while(GETC(ch) <= ' ' && ch >= 0);
+ no1 = 1;
+ dn0 = dimens;
+ if (type == TYCHAR && ch == '(' /*)*/) {
+ if (k = getdimen(&ch, &substr, size, size, &b))
+ errfl(a->cierr, k, where);
+ if (ch != ')')
+ errfl(a->cierr, 115, where);
+ b1 = substr.extent;
+ if (--b < 0 || b + b1 > size)
+ return 124;
+ iva += b;
+ b0 = size;
+ size = b1;
+ while(GETC(ch) <= ' ' && ch >= 0);
+ if (b1 < b0)
+ goto delta_adj;
+ }
+ if (readall)
+ goto delta_adj;
+ for(; dn0 < dn; dn0++) {
+ if (dn0->extent != *dims++ || dn0->stride != 1)
+ break;
+ no1 *= dn0->extent;
+ }
+ if (dn0 == dimens && dimens[0].stride == 1) {
+ no1 = dimens[0].extent;
+ dn0++;
+ }
+ delta_adj:
+ ex = 0;
+ for(dn1 = dn0; dn1 <= dn; dn1++)
+ ex += (dn1->extent-1)
+ * (dn1->delta *= dn1->stride);
+ for(dn1 = dn; dn1 > dn0; dn1--) {
+ ex -= (dn1->extent - 1) * dn1->delta;
+ dn1->delta -= ex;
+ }
+ }
+ else if (dims = v->dims) {
+ no = no1 = dims[1];
+ ivae = iva + no*size;
+ }
+ else
+ scalar:
+ no = no1 = 1;
+ if (ch != '=')
+ errfl(a->cierr, 115, where);
+ got1 = nml_read = 1;
+ f__lcount = 0;
+ readloop:
+ for(;;) {
+ if (iva >= ivae || iva < 0) {
+ f__lquit = 1;
+ goto mustend;
+ }
+ else if (iva + no1*size > ivae)
+ no1 = (ivae - iva)/size;
+ f__lquit = 0;
+ if (k = l_read(&no1, vaddr + iva, size, type))
+ return k;
+ if (f__lquit == 1)
+ return 0;
+ if (readall) {
+ iva += dn0->delta;
+ if (f__lcount > 0) {
+ no1 = (ivae - iva)/size;
+ if (no1 > f__lcount)
+ no1 = f__lcount;
+ iva += no1 * dn0->delta;
+ if (k = l_read(&no1, vaddr + iva,
+ size, type))
+ return k;
+ }
+ }
+ mustend:
+ GETC(ch);
+ if (readall)
+ if (iva >= ivae)
+ readall = 0;
+ else for(;;) {
+ switch(ch) {
+ case ' ':
+ case '\t':
+ case '\n':
+ GETC(ch);
+ continue;
+ }
+ break;
+ }
+ if (ch == '/' || ch == '$' || ch == '&') {
+ f__lquit = 1;
+ return 0;
+ }
+ else if (f__lquit) {
+ while(ch <= ' ' && ch >= 0)
+ GETC(ch);
+ Ungetc(ch,f__cf);
+ if (!Alpha[ch & 0xff] && ch >= 0)
+ errfl(a->cierr, 125, where);
+ break;
+ }
+ Ungetc(ch,f__cf);
+ if (readall && !Alpha[ch & 0xff])
+ goto readloop;
+ if ((no -= no1) <= 0)
+ break;
+ for(dn1 = dn0; dn1 <= dn; dn1++) {
+ if (++dn1->curval < dn1->extent) {
+ iva += dn1->delta;
+ goto readloop;
+ }
+ dn1->curval = 0;
+ }
+ break;
+ }
+ }
+ }
+
+ integer
+#ifdef KR_headers
+s_rsne(a) cilist *a;
+#else
+s_rsne(cilist *a)
+#endif
+{
+ extern int l_eof;
+ int n;
+
+ f__external=1;
+ l_eof = 0;
+ if(n = c_le(a))
+ return n;
+ if(f__curunit->uwrt && f__nowreading(f__curunit))
+ err(a->cierr,errno,where0);
+ l_getc = t_getc;
+ l_ungetc = un_getc;
+ f__doend = xrd_SL;
+ n = x_rsne(a);
+ nml_read = 0;
+ if (n)
+ return n;
+ return e_rsle();
+ }
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