--- /dev/null
+/* -*-c-*-
+ *
+ * $Id: mptext-dstr.c,v 1.1 1999/11/17 18:02:16 mdw Exp $
+ *
+ * Reading and writing large integers on strings
+ *
+ * (c) 1999 Straylight/Edgeware
+ */
+
+/*----- Licensing notice --------------------------------------------------*
+ *
+ * This file is part of Catacomb.
+ *
+ * Catacomb is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Library General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * Catacomb 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 Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with Catacomb; if not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ * MA 02111-1307, USA.
+ */
+
+/*----- Revision history --------------------------------------------------*
+ *
+ * $Log: mptext-dstr.c,v $
+ * Revision 1.1 1999/11/17 18:02:16 mdw
+ * New multiprecision integer arithmetic suite.
+ *
+ */
+
+/*----- Header files ------------------------------------------------------*/
+
+#include <mLib/dstr.h>
+
+#include "mptext.h"
+
+/*----- Main code ---------------------------------------------------------*/
+
+/* --- Operations table --- */
+
+static int get(void *p)
+{
+ mptext_dstrctx *c = p;
+ if (c->i >= c->d->len)
+ return (EOF);
+ return (c->d->buf[c->i++]);
+}
+
+static void unget(int ch, void *p)
+{
+ mptext_dstrctx *c = p;
+ if (ch == EOF || c->i == 0)
+ return;
+ c->i--;
+}
+
+static int put(char *s, size_t sz, void *p)
+{
+ mptext_dstrctx *c = p;
+ DPUTM(c->d, s, sz);
+ return (0);
+}
+
+const mptext_ops mptext_dstrops = { get, unget, put };
+
+/* --- Convenience functions --- */
+
+mp *mp_readdstr(mp *m, dstr *d, size_t *off, int radix)
+{
+ mptext_dstrctx c;
+ c.d = d;
+ c.i = off ? *off : 0;
+ m = mp_read(m, radix, &mptext_dstrops, &c);
+ if (off)
+ *off = c.i;
+ return (m);
+}
+
+int mp_writedstr(mp *m, dstr *d, int radix)
+{
+ mptext_dstrctx c;
+ int rc;
+ c.d = d;
+ rc = mp_write(m, radix, &mptext_dstrops, &c);
+ DPUTZ(d);
+ return (rc);
+}
+
+/*----- That's all, folks -------------------------------------------------*/