--- /dev/null
+/* -*-c-*-
+ *
+ * String I/O for group elements
+ *
+ * (c) 2004 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 "group.h"
+
+/*----- Main code ---------------------------------------------------------*/
+
+/* --- @group_readstring@ --- *
+ *
+ * Arguments: @group *g@ = an abstract group
+ * @ge *d@ = destination group element
+ * @const char *p@ = where the string is
+ * @char **end@ = where to put the end pointer
+ *
+ * Returns: Zero on success, nonzero on failure.
+ *
+ * Use: Parses a group element from a string.
+ */
+
+int group_readstring(group *g, ge *d, const char *p, char **end)
+{
+ mptext_stringctx ms;
+
+ ms.buf = (/*unconst*/ char *)p;
+ ms.lim = (/*unconst*/ char *)p + strlen(p);
+ if (G_READ(g, d, &mptext_stringops, &ms))
+ return (-1);
+ if (end) *end = ms.buf;
+ return (0);
+}
+
+/* --- @group_writestring@ --- *
+ *
+ * Arguments: @group *g@ = an abstract group
+ * @ge *x@ = a group element
+ * @char *p@ = where the string should go
+ * @size_t sz@ = how long the buffer is
+ *
+ * Returns: Zero on success, nonzero on failure.
+ *
+ * Use: Writes a group element to a string buffer.
+ */
+
+int group_writestring(group *g, ge *x, char *p, size_t sz)
+{
+ mptext_stringctx ms;
+
+ ms.buf = p;
+ ms.lim = p + sz - 1;
+ if (G_WRITE(g, x, &mptext_stringops, &ms))
+ return (-1);
+ *ms.buf = 0;
+ return (0);
+}
+
+/*----- That's all, folks -------------------------------------------------*/