X-Git-Url: https://git.distorted.org.uk/u/mdw/catacomb/blobdiff_plain/ba6e6b64033b1f9de49feccb5c9cd438354481f7..0f00dc4c8eb47e67bc0f148c2dd109f73a451e0a:/math/mptext-file.c

diff --git a/math/mptext-file.c b/math/mptext-file.c
new file mode 100644
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--- /dev/null
+++ b/math/mptext-file.c
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+/* -*-c-*-
+ *
+ * Reading and writing large integers on files
+ *
+ * (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.
+ */
+
+/*----- Header files ------------------------------------------------------*/
+
+#include <stdio.h>
+
+#include "mptext.h"
+
+/*----- Main code ---------------------------------------------------------*/
+
+/* --- Operations table --- */
+
+static int get(void *p) { FILE *fp = p; return getc(fp); }
+
+static void unget(int ch, void *p) { FILE *fp = p; ungetc(ch, fp); }
+
+static int put(const char *s, size_t sz, void *p)
+{
+  FILE *fp = p;
+  return (fwrite(s, 1, sz, fp) != sz);
+}
+
+const mptext_ops mptext_fileops = { get, unget, put };
+
+/* --- Convenience functions --- */
+
+mp *mp_readfile(mp *m, FILE *fp, int radix)
+{
+  return mp_read(m, radix, &mptext_fileops, fp);
+}
+
+int mp_writefile(mp *m, FILE *fp, int radix)
+{
+  return mp_write(m, radix, &mptext_fileops, fp);
+}
+
+/*----- That's all, folks -------------------------------------------------*/