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guile/libguile/readline.c
Jim Blandy a2d4941fb5 Readline support, from Daniel Risacher.
* readline.c, readline.h: New files.
* init.c: #include "readline.h".
(scm_boot_guile_1): Call scm_init_readline, if we have it.
* Makefile.am (libguile_la_SOURCES): Include readline.c.
* Makefile.in: Regenerated.
* scmconfig.h.in: Regenerated, after change to ../configure.
1997-10-23 05:02:18 +00:00

64 lines
1.1 KiB
C

/* need copyright assignment from Daniel Risacher */
#include "_scm.h"
#ifdef HAVE_LIBREADLINE
#include <libguile.h>
#include <gh.h>
#include <readline/readline.h>
#include <readline/history.h>
SCM_PROC (s_readline, "readline", 0, 1, 0, scm_readline);
SCM
scm_readline (SCM txt)
{
SCM ret;
char* s;
char* prompt;
if (! SCM_UNBNDP (txt))
{
SCM_ASSERT ((SCM_NIMP(txt) && SCM_STRINGP(txt)), txt, SCM_ARG1,
s_readline);
SCM_COERCE_SUBSTR (txt);
}
SCM_DEFER_INTS;
prompt = SCM_UNBNDP (txt) ? "" : SCM_CHARS (txt);
s = readline(prompt);
if (s)
ret = gh_str02scm(s);
else
ret = SCM_EOF_VAL;
free (s);
SCM_ALLOW_INTS;
return ret;
}
SCM_PROC (s_add_history, "add-history", 1, 0, 0, scm_add_history);
SCM
scm_add_history (SCM txt)
{
char* s;
SCM_ASSERT ((SCM_NIMP(txt) && SCM_STRINGP(txt)), txt, SCM_ARG1,
s_add_history);
SCM_COERCE_SUBSTR (txt);
SCM_DEFER_INTS;
s = SCM_CHARS(txt);
add_history(s);
SCM_ALLOW_INTS;
return SCM_UNSPECIFIED;
}
void
scm_init_readline ()
{
#include "readline.x"
scm_add_feature ("readline");
}
#endif