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107 lines
3.1 KiB
C
107 lines
3.1 KiB
C
/* readline.c --- line editing support for Guile */
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/* Copyright (C) 1997 Free Software Foundation, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; see the file COPYING. If not, write to
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* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* As a special exception, the Free Software Foundation gives permission
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* for additional uses of the text contained in its release of GUILE.
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*
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* The exception is that, if you link the GUILE library with other files
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* to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the GUILE library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the
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* Free Software Foundation under the name GUILE. If you copy
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* code from other Free Software Foundation releases into a copy of
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* GUILE, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for GUILE, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice.
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*/
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#include "_scm.h"
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#ifdef HAVE_LIBREADLINE
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#include <libguile.h>
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#include <readline.h>
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#include <gh.h>
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#include <readline/readline.h>
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#include <readline/history.h>
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SCM_PROC (s_readline, "readline", 0, 1, 0, scm_readline);
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SCM
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scm_readline (SCM txt)
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{
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SCM ret;
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char* s;
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char* prompt;
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if (! SCM_UNBNDP (txt))
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{
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SCM_ASSERT ((SCM_NIMP(txt) && SCM_STRINGP(txt)), txt, SCM_ARG1,
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s_readline);
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SCM_COERCE_SUBSTR (txt);
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}
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SCM_DEFER_INTS;
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prompt = SCM_UNBNDP (txt) ? "" : SCM_CHARS (txt);
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s = readline(prompt);
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if (s)
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ret = gh_str02scm(s);
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else
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ret = SCM_EOF_VAL;
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free (s);
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SCM_ALLOW_INTS;
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return ret;
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}
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SCM_PROC (s_add_history, "add-history", 1, 0, 0, scm_add_history);
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SCM
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scm_add_history (SCM txt)
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{
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char* s;
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SCM_ASSERT ((SCM_NIMP(txt) && SCM_STRINGP(txt)), txt, SCM_ARG1,
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s_add_history);
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SCM_COERCE_SUBSTR (txt);
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SCM_DEFER_INTS;
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s = SCM_CHARS(txt);
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add_history(s);
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SCM_ALLOW_INTS;
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return SCM_UNSPECIFIED;
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}
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void
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scm_init_readline ()
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{
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#include "readline.x"
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scm_add_feature ("readline");
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}
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#endif
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