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+/* Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this software; see the file COPYING. If not, write to
+ * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * As a special exception, the Free Software Foundation gives permission
+ * for additional uses of the text contained in its release of GUILE.
+ *
+ * The exception is that, if you link the GUILE library with other files
+ * to produce an executable, this does not by itself cause the
+ * resulting executable to be covered by the GNU General Public License.
+ * Your use of that executable is in no way restricted on account of
+ * linking the GUILE library code into it.
+ *
+ * This exception does not however invalidate any other reasons why
+ * the executable file might be covered by the GNU General Public License.
+ *
+ * This exception applies only to the code released by the
+ * Free Software Foundation under the name GUILE. If you copy
+ * code from other Free Software Foundation releases into a copy of
+ * GUILE, as the General Public License permits, the exception does
+ * not apply to the code that you add in this way. To avoid misleading
+ * anyone as to the status of such modified files, you must delete
+ * this exception notice from them.
+ *
+ * If you write modifications of your own for GUILE, it is your choice
+ * whether to permit this exception to apply to your modifications.
+ * If you do not wish that, delete this exception notice.
+ */
+
+/* "rope.c" interface between C and SCM.
+ Author: Aubrey Jaffer */
+
+#include "scm.h"
+
+ /* Numeric conversions */
+ /* Convert longs to SCM */
+SCM long2num(sl)
+ long sl;
+{
+ if (!FIXABLE(sl)) {
+# ifdef BIGDIG
+ return long2big(sl);
+# else
+# ifdef FLOATS
+ return makdbl((double) sl, 0.0);
+# else
+ return BOOL_F;
+# endif
+# endif
+ }
+ return MAKINUM(sl);
+}
+SCM ulong2num(sl)
+ unsigned long sl;
+{
+ if (!POSFIXABLE(sl)) {
+#ifdef BIGDIG
+ return ulong2big(sl);
+#else
+# ifdef FLOATS
+ return makdbl((double) sl, 0.0);
+# else
+ return BOOL_F;
+# endif
+#endif
+ }
+ return MAKINUM(sl);
+}
+
+ /* Convert SCM to numbers */
+unsigned char num2uchar(num, pos, s_caller)
+ SCM num;
+ char *pos, *s_caller;
+{
+ unsigned long res = INUM(num);
+ ASSERT(INUMP(num) && (255L >= res),num,pos,s_caller);
+ return (unsigned char) res;
+}
+unsigned short num2ushort(num, pos, s_caller)
+ SCM num;
+ char *pos, *s_caller;
+{
+ unsigned long res = INUM(num);
+ ASSERT(INUMP(num) && (65535L >= res),num,pos,s_caller);
+ return (unsigned short) res;
+}
+unsigned long num2ulong(num, pos, s_caller)
+ SCM num;
+ char *pos, *s_caller;
+{
+ unsigned long res;
+ if INUMP(num) {
+ ASRTGO(0 < num, errout);
+ res = INUM((unsigned long)num);
+ return res;
+ }
+ ASRTGO(NIMP(num), errout);
+#ifdef FLOATS
+ if REALP(num) {
+ double u = REALPART(num);
+ if ((0 <= u) && (u <= (unsigned long)~0L)) {
+ res = u;
+ return res;
+ }
+ }
+#endif
+#ifdef BIGDIG
+ if (TYP16(num)==tc16_bigpos) {
+ sizet l = NUMDIGS(num);
+ ASRTGO(DIGSPERLONG >= l, errout);
+ res = 0;
+ for(;l--;) res = BIGUP(res) + BDIGITS(num)[l];
+ return res;
+ }
+#endif
+ errout: wta(num, pos, s_caller);
+}
+long num2long(num, pos, s_caller)
+ SCM num;
+ char *pos, *s_caller;
+{
+ long res;
+ if INUMP(num) {
+ res = INUM((long)num);
+ return res;
+ }
+ ASRTGO(NIMP(num), errout);
+# ifdef FLOATS
+ if REALP(num) {
+ double u = REALPART(num);
+ if (((MOST_NEGATIVE_FIXNUM * 4) <= u)
+ && (u <= (MOST_POSITIVE_FIXNUM * 4 + 3))) {
+ res = u;
+ return res;
+ }
+ }
+# endif
+# ifdef BIGDIG
+ if BIGP(num) {
+ sizet l = NUMDIGS(num);
+ ASRTGO(DIGSPERLONG >= l, errout);
+ res = 0;
+ for(;l--;) res = BIGUP(res) + BDIGITS(num)[l];
+ ASRTGO(0<res, errout);
+ return (tc16_bigpos==TYP16(num) ? res : -res);
+ }
+# endif
+ errout: wta(num, pos, s_caller);
+}
+#ifdef FLOATS
+double num2dbl(num, pos, s_caller)
+ SCM num;
+ char *pos, *s_caller;
+{
+ if INUMP(num) return (double)INUM(num);
+ ASRTGO(NIMP(num), errout);
+ if REALP(num) return REALPART(num);
+#ifdef BIGDIG
+ if BIGP(num) return big2dbl(num);
+#endif
+ errout: wta(num, pos, s_caller);
+}
+#endif
+
+
+ /* Convert (arrays of) strings to SCM */
+SCM makfromstr(src, len)
+ char *src;
+ sizet len;
+{
+ SCM s;
+ register char *dst;
+ s = makstr((long)len);
+ dst = CHARS(s);
+ while (len--) *dst++ = *src++;
+ return s;
+}
+SCM makfrom0str(src)
+ char *src;
+{
+ if (!src) return BOOL_F;
+ return makfromstr(src, (sizet) strlen(src));
+}
+/* converts C array of strings to SCM list of strings. */
+/* If argc < 0, a null terminated array is assumed. */
+SCM makfromstrs(argc, argv)
+ int argc;
+ char **argv;
+{
+ int i = argc;
+ SCM lst = EOL;
+ if (0 > i) for(i = 0; argv[i]; i++);
+ while (i--) lst = cons(makfrom0str(argv[i]), lst);
+ return lst;
+}
+/* Converts SCM list of strings to NULL terminated array of strings. */
+/* INTS must be DEFERed around this call and the use of the returned array. */
+char **makargvfrmstrs(args, s_name)
+ SCM args;
+ char *s_name;
+{
+ char **argv;
+ int argc = ilength(args);
+ argv = (char **)must_malloc((1L+argc)*sizeof(char *), s_vector);
+ for(argc = 0; NNULLP(args); args=CDR(args), ++argc) {
+ ASSERT(NIMP(CAR(args)) && STRINGP(CAR(args)), CAR(args), ARG2, s_name);
+ {
+ sizet len = 1 + LENGTH(CAR(args));
+ char *dst = (char *)must_malloc((long)len, s_string);
+ char *src = CHARS(CAR(args));
+ while (len--) dst[len] = src[len];
+ argv[argc] = dst;
+ }
+ }
+ argv[argc] = 0;
+ return argv;
+}
+void must_free_argv(argv)
+ char **argv;
+{
+ char **av = argv;
+ while(!(*av)) free(*(av++));
+ free(argv);
+}
+
+ /* Hooks to call SCM from C */
+SCM scm_evstr(str)
+ char *str;
+{
+ SCM lsym;
+ NEWCELL(lsym);
+ SETLENGTH(lsym, strlen(str)+0L, tc7_ssymbol);
+ SETCHARS(lsym, str);
+ return scm_eval_string(lsym);
+}
+void scm_ldstr(str)
+ char *str;
+{
+ SCM lsym;
+ NEWCELL(lsym);
+ SETLENGTH(lsym, strlen(str)+0L, tc7_ssymbol);
+ SETCHARS(lsym, str);
+ scm_load_string(lsym);
+}
+int scm_ldfile(path)
+ char *path;
+{
+ SCM name = makfrom0str(path);
+ *loc_errobj = name;
+ return BOOL_F==tryload(name);
+}
+int scm_ldprog(path)
+ char *path;
+{
+ SCM name = makfrom0str(path);
+ *loc_errobj = name;
+ return
+ BOOL_F==scm_evstr("(try-load (in-vicinity (program-vicinity) errobj))");
+}
+
+ /* Get byte address of SCM array */
+#ifdef ARRAYS
+long aind P((SCM ra, SCM args, char *what));
+unsigned long scm_addr(args, s_name)
+ SCM args;
+ char *s_name;
+{
+ long pos;
+ unsigned long ptr = 0; /* gratuitous assignment squelches cc warn. */
+ SCM v;
+ ASRTGO(NIMP(args), wna);
+ v = CAR(args);
+ args = CDR(args);
+ if IMP(v) {goto badarg;}
+ else if ARRAYP(v) {
+ pos = aind(v, args, s_name);
+ v = ARRAY_V(v);
+ }
+ else {
+ if NIMP(args) {
+ ASSERT(CONSP(args) && INUMP(CAR(args)), args, ARG2, s_name);
+ pos = INUM(CAR(args));
+ ASRTGO(NULLP(CDR(args)), wna);
+ }
+ else if NULLP(args) pos = 0;
+ else {
+ ASSERT(INUMP(args), args, ARG2, s_name);
+ pos = INUM(args);
+ }
+ ASRTGO(pos >= 0 && pos < LENGTH(v), outrng);
+ }
+ switch TYP7(v) {
+ case tc7_string:
+ ptr = (unsigned long)&(CHARS(v)[pos]);
+ break;
+# ifdef FLOATS
+# ifdef SINGLES
+ case tc7_fvect:
+ ptr = (unsigned long)&(((float *)CDR(v))[pos]);
+ break;
+# endif
+ case tc7_cvect: pos = 2 * pos;
+ case tc7_dvect: ptr = (unsigned long)&(((double *)CDR(v))[pos]);
+ break;
+# endif
+ case tc7_bvect: ASRTGO(0==(pos%LONG_BIT), outrng);
+ pos = pos/LONG_BIT;
+ case tc7_uvect:
+ case tc7_ivect:
+ case tc7_vector: ptr = (unsigned long)&(VELTS(v)[pos]);
+ break;
+ outrng: wta(MAKINUM(pos), (char *)OUTOFRANGE, s_name);
+ default:
+ badarg: wta(v, (char *)ARG1, s_name);
+ wna: wta(UNDEFINED, (char *)WNA, s_name);
+ }
+ return ptr;
+}
+#endif /* ARRAYS */
+
+void init_rope()
+{
+}