#ifdef OS_USE_LIBEDIT

# include <histedit.h>

# ifndef OS_HISTORY_SIZE

# define OS_HISTORY_SIZE 1000

# endif /* !OS_HISTORY_SIZE */

#else /* OS_USE_LIBEDIT */

# include <unistd.h>

# define EditLine void

# define _GNU_SOURCE 1 /* Neded for getline() */

#endif /* OS_USE_LIBEDIT */

#include <stdio.h>

#include "objectscript.h"

static char*

prompt_cb(EditLine*)

{

static char promptstr[] = "(os) ";

return promptstr;

}

int main(int argc, char *argv[])

{

ObjectScript::OS *shell(ObjectScript::OS::create());

#ifdef OS_USE_LIBEDIT

HistEvent hevent;

History *hh(history_init());

history(hh, &hevent, H_SETUNIQUE, 1);

history(hh, &hevent, H_SETSIZE, OS_HISTORY_SIZE);

EditLine *el(el_init("os", stdin, stdout, stderr));

el_set(el, EL_SIGNAL, 1);

el_set(el, EL_EDITOR, "emacs");

el_set(el, EL_PROMPT, prompt_cb);

el_set(el, EL_HIST, history, hh);

const char *line = NULL;

int linelen = -1;

while ((line = el_gets(el, &linelen)) && linelen > 0) {

shell->eval(line);

history(hh, &hevent, H_ENTER, line);

}

el_end(el);

history_end(hh);

#else /* OS_USE_LIBEDIT */

char *line = NULL;

size_t len;

bool tty_input = isatty(STDIN_FILENO);

if (tty_input)

printf ("%s", prompt_cb(NULL));

while (getline(&line, &len, stdin) != -1) {

shell->eval(line);

if (tty_input)

printf("%s", prompt_cb(NULL));

}

if (line)

free(line);

#endif /* OS_USE_LIBEDIT */

shell->release();

}