text: /*	$NetBSD: tc1.c,v 1.5 2010/04/18 21:17:47 christos Exp $	*/
  
  /*-
   * Copyright (c) 1992, 1993
   *	The Regents of the University of California.  All rights reserved.
   *
   * This code is derived from software contributed to Berkeley by
   * Christos Zoulas of Cornell University.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. Neither the name of the University nor the names of its contributors
   *    may be used to endorse or promote products derived from this software
   *    without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   */
  
  #include "config.h"
  
  /*
   * test.c: A little test program
   */
  #include <stdio.h>
  #include <string.h>
  #include <signal.h>
  #include <sys/wait.h>
  #include <ctype.h>
  #include <stdlib.h>
  #include <unistd.h>
  #include <dirent.h>
  #include <locale.h>
  
  #include "histedit.h"
  
  static int continuation = 0;
  volatile sig_atomic_t gotsig = 0;
  
  static	unsigned char	complete(EditLine *, int);
  	int	main(int, char **);
  static	char   *prompt(EditLine *);
  static	void	sig(int);
  
  static char *
  prompt(EditLine *el)
  {
  	static char a[] = "\1\033[7m\1Edit$\1\033[0m\1 ";
  	static char b[] = "Edit> ";
  
  	return (continuation ? b : a);
  }
  
  static void
  sig(int i)
  {
  	gotsig = i;
  }
  
  static unsigned char
  complete(EditLine *el, int ch)
  {
  	DIR *dd = opendir(".");
  	struct dirent *dp;
  	const char* ptr;
  	const LineInfo *lf = el_line(el);
  	int len;
  	int res = CC_ERROR;
  
  	/*
  	 * Find the last word
  	 */
  	for (ptr = lf->cursor - 1;
  	    !isspace((unsigned char)*ptr) && ptr > lf->buffer; ptr--)
  		continue;
  	len = lf->cursor - ptr;
  
  	for (dp = readdir(dd); dp != NULL; dp = readdir(dd)) {
  		if (len > strlen(dp->d_name))
  			continue;
  		if (strncmp(dp->d_name, ptr, len) == 0) {
  			if (el_insertstr(el, &dp->d_name[len]) == -1)
  				res = CC_ERROR;
  			else
  				res = CC_REFRESH;
  			break;
  		}
  	}
  
  	closedir(dd);
  	return res;
  }
  
  int
  main(int argc, char *argv[])
  {
  	EditLine *el = NULL;
  	int num;
  	const char *buf;
  	Tokenizer *tok;
  #if 0
  	int lastevent = 0;
  #endif
  	int ncontinuation;
  	History *hist;
  	HistEvent ev;
  
  	(void) setlocale(LC_CTYPE, "");
  	(void) signal(SIGINT, sig);
  	(void) signal(SIGQUIT, sig);
  	(void) signal(SIGHUP, sig);
  	(void) signal(SIGTERM, sig);
  
  	hist = history_init();		/* Init the builtin history	*/
  					/* Remember 100 events		*/
  	history(hist, &ev, H_SETSIZE, 100);
  
  	tok  = tok_init(NULL);		/* Initialize the tokenizer	*/
  
  					/* Initialize editline		*/
  	el = el_init(*argv, stdin, stdout, stderr);
  
  	el_set(el, EL_EDITOR, "vi");	/* Default editor is vi		*/
  	el_set(el, EL_SIGNAL, 1);	/* Handle signals gracefully	*/
  	el_set(el, EL_PROMPT_ESC, prompt, '\1');/* Set the prompt function */
  
  			/* Tell editline to use this history interface	*/
  	el_set(el, EL_HIST, history, hist);
  
  					/* Add a user-defined function	*/
  	el_set(el, EL_ADDFN, "ed-complete", "Complete argument", complete);
  
  					/* Bind tab to it 		*/
  	el_set(el, EL_BIND, "^I", "ed-complete", NULL);
  
  	/*
  	 * Bind j, k in vi command mode to previous and next line, instead
  	 * of previous and next history.
  	 */
  	el_set(el, EL_BIND, "-a", "k", "ed-prev-line", NULL);
  	el_set(el, EL_BIND, "-a", "j", "ed-next-line", NULL);
  
  	/*
  	 * Source the user's defaults file.
  	 */
  	el_source(el, NULL);
  
  	while ((buf = el_gets(el, &num)) != NULL && num != 0)  {
  		int ac, cc, co;
  #ifdef DEBUG
  		int i;
  #endif
  		const char **av;
  		const LineInfo *li;
  		li = el_line(el);
  #ifdef DEBUG
  		(void) fprintf(stderr, "==> got %d %s", num, buf);
  		(void) fprintf(stderr, "  > li `%.*s_%.*s'\n",
  		    (li->cursor - li->buffer), li->buffer,
  		    (li->lastchar - 1 - li->cursor),
  		    (li->cursor >= li->lastchar) ? "" : li->cursor);
  
  #endif
  		if (gotsig) {
  			(void) fprintf(stderr, "Got signal %d.\n", gotsig);
  			gotsig = 0;
  			el_reset(el);
  		}
  
  		if (!continuation && num == 1)
  			continue;
  
  		ac = cc = co = 0;
  		ncontinuation = tok_line(tok, li, &ac, &av, &cc, &co);
  		if (ncontinuation < 0) {
  			(void) fprintf(stderr, "Internal error\n");
  			continuation = 0;
  			continue;
  		}
  #ifdef DEBUG
  		(void) fprintf(stderr, "  > nc %d ac %d cc %d co %d\n",
  		    ncontinuation, ac, cc, co);
  #endif
  #if 0
  		if (continuation) {
  			/*
  			 * Append to the right event in case the user
  			 * moved around in history.
  			 */
  			if (history(hist, &ev, H_SET, lastevent) == -1)
  				err(1, "%d: %s", lastevent, ev.str);
  			history(hist, &ev, H_ADD , buf);
  		} else {
  			history(hist, &ev, H_ENTER, buf);
  			lastevent = ev.num;
  		}
  #else
  				/* Simpler */
  		history(hist, &ev, continuation ? H_APPEND : H_ENTER, buf);
  #endif
  
  		continuation = ncontinuation;
  		ncontinuation = 0;
  		if (continuation)
  			continue;
  #ifdef DEBUG
  		for (i = 0; i < ac; i++) {
  			(void) fprintf(stderr, "  > arg# %2d ", i);
  			if (i != cc)
  				(void) fprintf(stderr, "`%s'\n", av[i]);
  			else
  				(void) fprintf(stderr, "`%.*s_%s'\n",
  				    co, av[i], av[i] + co);
  		}
  #endif
  
  		if (strcmp(av[0], "history") == 0) {
  			int rv;
  
  			switch (ac) {
  			case 1:
  				for (rv = history(hist, &ev, H_LAST); rv != -1;
  				    rv = history(hist, &ev, H_PREV))
  					(void) fprintf(stdout, "%4d %s",
  					    ev.num, ev.str);
  				break;
  
  			case 2:
  				if (strcmp(av[1], "clear") == 0)
  					 history(hist, &ev, H_CLEAR);
  				else
  					 goto badhist;
  				break;
  
  			case 3:
  				if (strcmp(av[1], "load") == 0)
  					 history(hist, &ev, H_LOAD, av[2]);
  				else if (strcmp(av[1], "save") == 0)
  					 history(hist, &ev, H_SAVE, av[2]);
  				break;
  
  			badhist:
  			default:
  				(void) fprintf(stderr,
  				    "Bad history arguments\n");
  				break;
  			}
  		} else if (el_parse(el, ac, av) == -1) {
  			switch (fork()) {
  			case 0:
  				execvp(av[0], (char *const *)av);
  				perror(av[0]);
  				_exit(1);
  				/*NOTREACHED*/
  				break;
  
  			case -1:
  				perror("fork");
  				break;
  
  			default:
  				if (wait(&num) == -1)
  					perror("wait");
  				(void) fprintf(stderr, "Exit %x\n", num);
  				break;
  			}
  		}
  
  		tok_reset(tok);
  	}
  
  	el_end(el);
  	tok_end(tok);
  	history_end(hist);
  
  	return (0);
  }
  