Import Upstream version 4e6upstream/4e6

1 files changed, 94 insertions, 0 deletions

diff --git a/edline.c b/edline.c
new file mode 100644
index 0000000..ab15578
--- /dev/null
+++ b/edline.c
@@ -0,0 +1,94 @@
+/* Copyright (C) 1994, 1995, 1996 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.
+ */
+
+/* "readline.c" Scheme interface to readline library
+   Author: Radey Shouman */
+
+#include "scm.h"
+
+char *readline   P((const char *prompt));
+void add_history P((char *p));
+
+             /* Reads on stdin/stdout only */
+static char s_readline[] = "read-edited-line";
+SCM lreadline(prompt)
+     SCM prompt;
+{
+  SCM res;
+  char *s;
+  ASSERT(NIMP(prompt) && STRINGP(prompt), prompt, ARG1, s_readline);
+  s = readline(CHARS(prompt));
+  if (NULL == s) return EOF_VAL;
+  NEWCELL(res);
+  DEFER_INTS;
+  SETCHARS(res,s);
+  SETLENGTH(res,(sizet)strlen(s),tc7_string);
+  ALLOW_INTS;
+  return res;
+}
+static char s_add_history[] = "add-history";
+SCM ladd_history(line)
+     SCM line;
+{
+  ASSERT(NIMP(line) && STRINGP(line), line, ARG1, s_add_history);
+  add_history(CHARS(line));
+  return UNSPECIFIED;
+}
+static char s_def_inport[] = "default-input-port";
+SCM def_inport()
+{
+  return def_inp;
+}
+static char s_def_outport[] = "default-output-port";
+SCM def_outport()
+{
+  return def_outp;
+}
+static char s_Iedline[] = "Iedline.scm";
+void init_edline()
+{
+  make_subr(s_def_inport, tc7_subr_0, def_inport);
+  make_subr(s_def_outport, tc7_subr_0, def_outport);
+  make_subr(s_readline, tc7_subr_1, lreadline);
+  make_subr(s_add_history, tc7_subr_1, ladd_history);
+  if (scm_ldprog(s_Iedline))
+    wta(*loc_errobj, "couldn't init", s_Iedline);
+}