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From jperkin : Merge libedit 2.11 and related files,

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based on NetBSD CVS as of 2009/02/06 20:09:00.
This commit is contained in:
Georgi Kodinov
2009-02-10 14:39:14 +02:00
parent 6c6fc0978e
commit fab053ccf8
56 changed files with 2273 additions and 3923 deletions
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103
cmd-line-utils/libedit/np/unvis.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: unvis.c,v 1.22 2002/03/23 17:38:27 christos Exp $ */
/* $NetBSD: unvis.c,v 1.28 2005/09/13 01:44:09 christos Exp $ */
/*-
* Copyright (c) 1989, 1993
@ -12,11 +12,7 @@
* 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
* 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.
*
@ -34,34 +30,30 @@
*/
#include "config.h"
#if defined(LIBC_SCCS) && !defined(lint)
#if 0
static char sccsid[] = "@(#)unvis.c 8.1 (Berkeley) 6/4/93";
#else
__RCSID("$NetBSD: unvis.c,v 1.22 2002/03/23 17:38:27 christos Exp $");
#endif
#endif /* LIBC_SCCS and not lint */
#define __LIBC12_SOURCE__
#include <sys/types.h>
#include <assert.h>
#include <ctype.h>
#include <stdio.h>
#ifdef HAVE_VIS_H
#include <vis.h>
#else
#include "np/vis.h"
#endif
#ifdef __weak_alias
__weak_alias(strunvis,_strunvis)
__weak_alias(unvis,_unvis)
#endif
#ifdef __warn_references
__warn_references(unvis,
"warning: reference to compatibility unvis(); include <vis.h> for correct reference")
#endif
#if !HAVE_VIS_H
#if !HAVE_VIS
/*
* decode driven by state machine
*/
@ -72,30 +64,22 @@ __warn_references(unvis,
#define S_CTRL 4 /* control char started (^) */
#define S_OCTAL2 5 /* octal digit 2 */
#define S_OCTAL3 6 /* octal digit 3 */
#define S_HEX1 7 /* hex digit */
#define S_HEX2 8 /* hex digit 2 */
#define S_HEX1 7 /* hex digit */
#define S_HEX2 8 /* hex digit 2 */
#define isoctal(c) (((u_char)(c)) >= '0' && ((u_char)(c)) <= '7')
#define xtod(c) (isdigit(c) ? (c - '0') : ((tolower(c) - 'a') + 10))
/*
* unvis - decode characters previously encoded by vis
*/
int
unvis(cp, c, astate, flag)
char *cp;
int c;
int *astate, flag;
{
return __unvis13(cp, (int)c, astate, flag);
}
/*
* unvis - decode characters previously encoded by vis
*/
int
__unvis13(cp, c, astate, flag)
char *cp;
int c;
int *astate, flag;
{
unsigned char uc = (unsigned char)c;
_DIAGASSERT(cp != NULL);
_DIAGASSERT(astate != NULL);
@ -105,7 +89,7 @@ __unvis13(cp, c, astate, flag)
|| *astate == S_HEX2) {
*astate = S_GROUND;
return (UNVIS_VALID);
}
}
return (*astate == S_GROUND ? UNVIS_NOCHAR : UNVIS_SYNBAD);
}
@ -116,7 +100,7 @@ __unvis13(cp, c, astate, flag)
if (c == '\\') {
*astate = S_START;
return (0);
}
}
if ((flag & VIS_HTTPSTYLE) && c == '%') {
*astate = S_HEX1;
return (0);
@ -193,7 +177,7 @@ __unvis13(cp, c, astate, flag)
}
*astate = S_GROUND;
return (UNVIS_SYNBAD);
case S_META:
if (c == '-')
*astate = S_META1;
@ -204,12 +188,12 @@ __unvis13(cp, c, astate, flag)
return (UNVIS_SYNBAD);
}
return (0);
case S_META1:
*astate = S_GROUND;
*cp |= c;
return (UNVIS_VALID);
case S_CTRL:
if (c == '?')
*cp |= 0177;
@ -219,23 +203,23 @@ __unvis13(cp, c, astate, flag)
return (UNVIS_VALID);
case S_OCTAL2: /* second possible octal digit */
if (isoctal(c)) {
/*
* yes - and maybe a third
if (isoctal(uc)) {
/*
* yes - and maybe a third
*/
*cp = (*cp << 3) + (c - '0');
*astate = S_OCTAL3;
*astate = S_OCTAL3;
return (0);
}
/*
* no - done with current sequence, push back passed char
}
/*
* no - done with current sequence, push back passed char
*/
*astate = S_GROUND;
return (UNVIS_VALIDPUSH);
case S_OCTAL3: /* third possible octal digit */
*astate = S_GROUND;
if (isoctal(c)) {
if (isoctal(uc)) {
*cp = (*cp << 3) + (c - '0');
return (UNVIS_VALID);
}
@ -243,27 +227,30 @@ __unvis13(cp, c, astate, flag)
* we were done, push back passed char
*/
return (UNVIS_VALIDPUSH);
case S_HEX1:
if (isxdigit(c)) {
*cp = xtod(c);
if (isxdigit(uc)) {
*cp = xtod(uc);
*astate = S_HEX2;
return (0);
}
/*
* no - done with current sequence, push back passed char
/*
* no - done with current sequence, push back passed char
*/
*astate = S_GROUND;
return (UNVIS_VALIDPUSH);
case S_HEX2:
*astate = S_GROUND;
if (isxdigit(c)) {
*cp = xtod(c) | (*cp << 4);
*astate = S_GROUND;
if (isxdigit(uc)) {
*cp = xtod(uc) | (*cp << 4);
return (UNVIS_VALID);
}
return (UNVIS_VALIDPUSH);
default:
/*
* decoder in unknown state - (probably uninitialized)
return (UNVIS_VALIDPUSH);
default:
/*
* decoder in unknown state - (probably uninitialized)
*/
*astate = S_GROUND;
return (UNVIS_SYNBAD);
@ -271,7 +258,7 @@ __unvis13(cp, c, astate, flag)
}
/*
* strunvis - decode src into dst
* strunvis - decode src into dst
*
* Number of chars decoded into dst is returned, -1 on error.
* Dst is null terminated.
@ -291,8 +278,8 @@ strunvisx(dst, src, flag)
_DIAGASSERT(dst != NULL);
while ((c = *src++) != '\0') {
again:
switch (__unvis13(dst, c, &state, flag)) {
again:
switch (unvis(dst, c, &state, flag)) {
case UNVIS_VALID:
dst++;
break;
@ -306,7 +293,7 @@ strunvisx(dst, src, flag)
return (-1);
}
}
if (__unvis13(dst, c, &state, UNVIS_END) == UNVIS_VALID)
if (unvis(dst, c, &state, UNVIS_END) == UNVIS_VALID)
dst++;
*dst = '\0';
return (dst - start);