Add ability to use system libedit and update bundled libedit.

The version of libedit that is bundled with asterisk is old and has some bugs.
This patch updates the bundled version of libedit within asterisk, and also
updates asterisk to use the system libedit instead if one is available (and
pkg-config is available).  This review integrates several patches from other
users specifically kkm and tzafrir.

(closes issue #15929)
Reported by: kkm
Patches:
      015929-astcli-editrc-trunk.240324.diff uploaded by kkm (license 888)

(issue #16858)
Reported by: jw-asterisk

(closes issue #17039)
Reported by: tzafrir
Patches:
      0001-allow-using-system-copy-of-libedit.patch uploaded by tzafrir (license 46)

Review: https://reviewboard.asterisk.org/r/807/


git-svn-id: http://svn.digium.com/svn/asterisk/branches/1.8@280019 f38db490-d61c-443f-a65b-d21fe96a405b

1 files changed, 0 insertions, 348 deletions

diff --git a/main/editline/np/vis.c b/main/editline/np/vis.c
deleted file mode 100644
index bd8192440..000000000
--- a/main/editline/np/vis.c
+++ /dev/null
@@ -1,348 +0,0 @@
-/*	$NetBSD: vis.c,v 1.22 2002/03/23 17:38:27 christos Exp $	*/
-
-/*-
- * Copyright (c) 1999 The NetBSD Foundation, Inc.
- * Copyright (c) 1989, 1993
- *	The Regents of the University of California.  All rights reserved.
- *
- * 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. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This product includes software developed by the University of
- *	California, Berkeley and its contributors.
- * 4. 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 <sys/cdefs.h>
-#if defined(LIBC_SCCS) && !defined(lint)
-__RCSID("$NetBSD: vis.c,v 1.22 2002/03/23 17:38:27 christos Exp $");
-#endif /* LIBC_SCCS and not lint */
-
-#include <sys/types.h>
-
-#include <assert.h>
-#include "np/vis.h"
-#include <stdlib.h>
-#include <stdint.h>
-
-#ifdef __weak_alias
-__weak_alias(strsvis,_strsvis)
-__weak_alias(strsvisx,_strsvisx)
-__weak_alias(strvis,_strvis)
-__weak_alias(strvisx,_strvisx)
-__weak_alias(svis,_svis)
-__weak_alias(vis,_vis)
-#endif
-
-#ifndef HAVE_VIS_H
-#include <ctype.h>
-#include <limits.h>
-#include <stdio.h>
-#include <string.h>
-
-#undef BELL
-#if defined(__STDC__)
-#define BELL '\a'
-#else
-#define BELL '\007'
-#endif
-
-#ifdef SOLARIS
-#include <alloca.h>
-#endif
-
-#define isoctal(c)	(((u_char)(c)) >= '0' && ((u_char)(c)) <= '7')
-#define iswhite(c)	(c == ' ' || c == '\t' || c == '\n')
-#define issafe(c)	(c == '\b' || c == BELL || c == '\r')
-#define xtoa(c)		"0123456789abcdef"[c]
-
-#define MAXEXTRAS       5
-
-
-#define MAKEEXTRALIST(flag, extra, orig)				      \
-do {									      \
-	const char *o = orig;						      \
-	char *e;						      	      \
-	while (*o++)							      \
-		continue;						      \
-	extra = alloca((size_t)((o - orig) + MAXEXTRAS));	      	      \
-	for (o = orig, e = extra; (*e++ = *o++) != '\0';)		      \
-		continue;						      \
-	e--;								      \
-	if (flag & VIS_SP) *e++ = ' ';				      	      \
-	if (flag & VIS_TAB) *e++ = '\t';				      \
-	if (flag & VIS_NL) *e++ = '\n';				      	      \
-	if ((flag & VIS_NOSLASH) == 0) *e++ = '\\';		      	      \
-	*e = '\0';							      \
-} while (/*CONSTCOND*/0)
-
-
-/*
- * This is HVIS, the macro of vis used to HTTP style (RFC 1808)
- */
-#define HVIS(dst, c, flag, nextc, extra)				      \
-do 									      \
-	if (!isascii(c) || !isalnum(c) || strchr("$-_.+!*'(),", c) != NULL) { \
-		*dst++ = '%';						      \
-		*dst++ = xtoa(((unsigned int)c >> 4) & 0xf);		      \
-		*dst++ = xtoa((unsigned int)c & 0xf);			      \
-	} else {							      \
-		SVIS(dst, c, flag, nextc, extra);			      \
-	}								      \
-while (/*CONSTCOND*/0)
-	
-/*
- * This is SVIS, the central macro of vis.
- * dst:	      Pointer to the destination buffer
- * c:	      Character to encode
- * flag:      Flag word
- * nextc:     The character following 'c'
- * extra:     Pointer to the list of extra characters to be
- *	      backslash-protected.
- */
-#define SVIS(dst, c, flag, nextc, extra)				      \
-do {									      \
-	int isextra, isc;						      \
-	isextra = strchr(extra, c) != NULL;				      \
-	if (!isextra && isascii(c) && (isgraph(c) || iswhite(c) ||	      \
-	    ((flag & VIS_SAFE) && issafe(c)))) {			      \
-		*dst++ = c;						      \
-		break;							      \
-	}								      \
-	isc = 0;							      \
-	if (flag & VIS_CSTYLE) {					      \
-		switch (c) {						      \
-		case '\n':						      \
-			isc = 1; *dst++ = '\\'; *dst++ = 'n';		      \
-			break;						      \
-		case '\r':						      \
-			isc = 1; *dst++ = '\\'; *dst++ = 'r';		      \
-			break;						      \
-		case '\b':						      \
-			isc = 1; *dst++ = '\\'; *dst++ = 'b';		      \
-			break;						      \
-		case BELL:						      \
-			isc = 1; *dst++ = '\\'; *dst++ = 'a';		      \
-			break;						      \
-		case '\v':						      \
-			isc = 1; *dst++ = '\\'; *dst++ = 'v';		      \
-			break;						      \
-		case '\t':						      \
-			isc = 1; *dst++ = '\\'; *dst++ = 't';		      \
-			break;						      \
-		case '\f':						      \
-			isc = 1; *dst++ = '\\'; *dst++ = 'f';		      \
-			break;						      \
-		case ' ':						      \
-			isc = 1; *dst++ = '\\'; *dst++ = 's';		      \
-			break;						      \
-		case '\0':						      \
-			isc = 1; *dst++ = '\\'; *dst++ = '0';		      \
-			if (isoctal(nextc)) {				      \
-				*dst++ = '0';				      \
-				*dst++ = '0';				      \
-			}						      \
-		}							      \
-	}								      \
-	if (isc) break;							      \
-	if (isextra || ((c & 0177) == ' ') || (flag & VIS_OCTAL)) {	      \
-		*dst++ = '\\';						      \
-		*dst++ = (u_char)(((uint32_t)(u_char)c >> 6) & 03) + '0';     \
-		*dst++ = (u_char)(((uint32_t)(u_char)c >> 3) & 07) + '0';     \
-		*dst++ =			     (c	      & 07) + '0';    \
-	} else {							      \
-		if ((flag & VIS_NOSLASH) == 0) *dst++ = '\\';		      \
-		if (c & 0200) {						      \
-			c &= 0177; *dst++ = 'M';			      \
-		}							      \
-		if (iscntrl(c)) {					      \
-			*dst++ = '^';					      \
-			if (c == 0177)					      \
-				*dst++ = '?';				      \
-			else						      \
-				*dst++ = c + '@';			      \
-		} else {						      \
-			*dst++ = '-'; *dst++ = c;			      \
-		}							      \
-	}								      \
-} while (/*CONSTCOND*/0)
-
-
-/*
- * svis - visually encode characters, also encoding the characters
- * 	  pointed to by `extra'
- */
-char *
-svis(dst, c, flag, nextc, extra)
-	char *dst;
-	int c, flag, nextc;
-	const char *extra;
-{
-	char *nextra;
-	_DIAGASSERT(dst != NULL);
-	_DIAGASSERT(extra != NULL);
-	MAKEEXTRALIST(flag, nextra, extra);
-	if (flag & VIS_HTTPSTYLE)
-		HVIS(dst, c, flag, nextc, nextra);
-	else
-		SVIS(dst, c, flag, nextc, nextra);
-	*dst = '\0';
-	return(dst);
-}
-
-
-/*
- * strsvis, strsvisx - visually encode characters from src into dst
- *
- *	Extra is a pointer to a \0-terminated list of characters to
- *	be encoded, too. These functions are useful e. g. to
- *	encode strings in such a way so that they are not interpreted
- *	by a shell.
- *	
- *	Dst must be 4 times the size of src to account for possible
- *	expansion.  The length of dst, not including the trailing NULL,
- *	is returned. 
- *
- *	Strsvisx encodes exactly len bytes from src into dst.
- *	This is useful for encoding a block of data.
- */
-int
-strsvis(dst, src, flag, extra)
-	char *dst;
-	const char *src;
-	int flag;
-	const char *extra;
-{
-	char c;
-	char *start;
-	char *nextra;
-
-	_DIAGASSERT(dst != NULL);
-	_DIAGASSERT(src != NULL);
-	_DIAGASSERT(extra != NULL);
-	MAKEEXTRALIST(flag, nextra, extra);
-	if (flag & VIS_HTTPSTYLE) {
-		for (start = dst; (c = *src++) != '\0'; /* empty */)
-			HVIS(dst, c, flag, *src, nextra);
-	} else {
-		for (start = dst; (c = *src++) != '\0'; /* empty */)
-			SVIS(dst, c, flag, *src, nextra);
-	}
-	*dst = '\0';
-	return (dst - start);
-}
-
-
-int
-strsvisx(dst, src, len, flag, extra)
-	char *dst;
-	const char *src;
-	size_t len;
-	int flag;
-	const char *extra;
-{
-	char c;
-	char *start;
-	char *nextra;
-
-	_DIAGASSERT(dst != NULL);
-	_DIAGASSERT(src != NULL);
-	_DIAGASSERT(extra != NULL);
-	MAKEEXTRALIST(flag, nextra, extra);
-
-	if (flag & VIS_HTTPSTYLE) {
-		for (start = dst; len > 0; len--) {
-			c = *src++;
-			HVIS(dst, c, flag, len ? *src : '\0', nextra);
-		}
-	} else {
-		for (start = dst; len > 0; len--) {
-			c = *src++;
-			SVIS(dst, c, flag, len ? *src : '\0', nextra);
-		}
-	}
-	*dst = '\0';
-	return (dst - start);
-}
-
-
-/*
- * vis - visually encode characters
- */
-char *
-vis(dst, c, flag, nextc)
-	char *dst;
-	int c, flag, nextc;
-	
-{
-	char *extra;
-
-	_DIAGASSERT(dst != NULL);
-
-	MAKEEXTRALIST(flag, extra, "");
-	if (flag & VIS_HTTPSTYLE)
-	    HVIS(dst, c, flag, nextc, extra);
-	else
-	    SVIS(dst, c, flag, nextc, extra);
-	*dst = '\0';
-	return (dst);
-}
-
-
-/*
- * strvis, strvisx - visually encode characters from src into dst
- *	
- *	Dst must be 4 times the size of src to account for possible
- *	expansion.  The length of dst, not including the trailing NULL,
- *	is returned. 
- *
- *	Strvisx encodes exactly len bytes from src into dst.
- *	This is useful for encoding a block of data.
- */
-int
-strvis(dst, src, flag)
-	char *dst;
-	const char *src;
-	int flag;
-{
-	char *extra;
-
-	MAKEEXTRALIST(flag, extra, "");
-	return (strsvis(dst, src, flag, extra));
-}
-
-
-int
-strvisx(dst, src, len, flag)
-	char *dst;
-	const char *src;
-	size_t len;
-	int flag;
-{
-	char *extra;
-
-	MAKEEXTRALIST(flag, extra, "");
-	return (strsvisx(dst, src, len, flag, extra));
-}
-#endif