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From jperkin : Merge libedit 2.11 and related files,
based on NetBSD CVS as of 2009/02/06 20:09:00.
This commit is contained in:
Georgi Kodinov
@ -1,7 +1,6 @@
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||||
/* $NetBSD: vis.c,v 1.22 2002/03/23 17:38:27 christos Exp $ */
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/* $NetBSD: vis.c,v 1.38 2008/09/04 09:41:44 lukem Exp $ */
|
||||
|
||||
/*-
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||||
* Copyright (c) 1999 The NetBSD Foundation, Inc.
|
||||
* Copyright (c) 1989, 1993
|
||||
* The Regents of the University of California. All rights reserved.
|
||||
*
|
||||
@ -13,11 +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.
|
||||
*
|
||||
@ -34,21 +29,47 @@
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||||
* SUCH DAMAGE.
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||||
*/
|
||||
|
||||
/*-
|
||||
* Copyright (c) 1999, 2005 The NetBSD Foundation, Inc.
|
||||
* 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.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
|
||||
*/
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||||
|
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#include "config.h"
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#if defined(LIBC_SCCS) && !defined(lint)
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__RCSID("$NetBSD: vis.c,v 1.22 2002/03/23 17:38:27 christos Exp $");
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#endif /* LIBC_SCCS and not lint */
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#include <sys/types.h>
|
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|
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#include <assert.h>
|
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#ifdef HAVE_ALLOCA_H
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#include <alloca.h>
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#ifdef HAVE_VIS_H
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#include <vis.h>
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#else
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#include "np/vis.h"
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#endif
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#include <stdlib.h>
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#include "np/vis.h"
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#ifdef __weak_alias
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__weak_alias(strsvis,_strsvis)
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__weak_alias(strsvisx,_strsvisx)
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@ -58,63 +79,61 @@ __weak_alias(svis,_svis)
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__weak_alias(vis,_vis)
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#endif
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#if !HAVE_VIS_H
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#if !HAVE_VIS || !HAVE_SVIS
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#include <ctype.h>
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#include <limits.h>
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#include <stdio.h>
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#include <string.h>
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#include <assert.h>
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#undef BELL
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#if defined(__STDC__)
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#define BELL '\a'
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#else
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#define BELL '\007'
|
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#endif
|
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#define isoctal(c) (((unsigned char)(c)) >= '0' && ((unsigned char)(c)) <= '7')
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static char *do_svis(char *, int, int, int, const char *);
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|
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#undef BELL
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#define BELL '\a'
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|
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#define isoctal(c) (((u_char)(c)) >= '0' && ((u_char)(c)) <= '7')
|
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#define iswhite(c) (c == ' ' || c == '\t' || c == '\n')
|
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#define issafe(c) (c == '\b' || c == BELL || c == '\r')
|
||||
#define xtoa(c) "0123456789abcdef"[c]
|
||||
|
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#define MAXEXTRAS 5
|
||||
#define MAXEXTRAS 5
|
||||
|
||||
#define MAKEEXTRALIST(flag, extra, orig_str) \
|
||||
do { \
|
||||
const char *orig = orig_str; \
|
||||
const char *o = orig; \
|
||||
char *e; \
|
||||
while (*o++) \
|
||||
continue; \
|
||||
extra = malloc((size_t)((o - orig) + MAXEXTRAS)); \
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if (!extra) break; \
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for (o = orig, e = extra; (*e++ = *o++) != '\0';) \
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continue; \
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e--; \
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if (flag & VIS_SP) *e++ = ' '; \
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if (flag & VIS_TAB) *e++ = '\t'; \
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if (flag & VIS_NL) *e++ = '\n'; \
|
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if ((flag & VIS_NOSLASH) == 0) *e++ = '\\'; \
|
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*e = '\0'; \
|
||||
} while (/*CONSTCOND*/0)
|
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|
||||
char *MAKEEXTRALIST(unsigned int flag, const char *orig)
|
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{
|
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const char *o = orig;
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char *e, *extra;
|
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while (*o++)
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continue;
|
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extra = (char*) malloc((size_t)((o - orig) + MAXEXTRAS));
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assert(extra);
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for (o = orig, e = extra; (*e++ = *o++) != '\0';)
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continue;
|
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e--;
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if (flag & VIS_SP) *e++ = ' ';
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if (flag & VIS_TAB) *e++ = '\t';
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if (flag & VIS_NL) *e++ = '\n';
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if ((flag & VIS_NOSLASH) == 0) *e++ = '\\';
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*e = '\0';
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return extra;
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/*
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* This is do_hvis, for HTTP style (RFC 1808)
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*/
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static char *
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do_hvis(char *dst, int c, int flag, int nextc, const char *extra)
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{
|
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if (!isascii(c) || !isalnum(c) || strchr("$-_.+!*'(),", c) != NULL) {
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*dst++ = '%';
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*dst++ = xtoa(((unsigned int)c >> 4) & 0xf);
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*dst++ = xtoa((unsigned int)c & 0xf);
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} else {
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dst = do_svis(dst, c, flag, nextc, extra);
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}
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return dst;
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}
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||||
|
||||
/*
|
||||
* This is HVIS, the macro of vis used to HTTP style (RFC 1808)
|
||||
*/
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||||
#define HVIS(dst, c, flag, nextc, extra) \
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||||
do \
|
||||
if (!isascii(c) || !isalnum(c) || strchr("$-_.+!*'(),", c) != NULL) { \
|
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*dst++ = '%'; \
|
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*dst++ = xtoa(((unsigned int)c >> 4) & 0xf); \
|
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*dst++ = xtoa((unsigned int)c & 0xf); \
|
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} else { \
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SVIS(dst, c, flag, nextc, extra); \
|
||||
} \
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||||
while (/*CONSTCOND*/0)
|
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|
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/*
|
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* This is SVIS, the central macro of vis.
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* This is do_vis, the central code of vis.
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||||
* dst: Pointer to the destination buffer
|
||||
* c: Character to encode
|
||||
* flag: Flag word
|
||||
@ -122,95 +141,103 @@ while (/*CONSTCOND*/0)
|
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* extra: Pointer to the list of extra characters to be
|
||||
* backslash-protected.
|
||||
*/
|
||||
#define SVIS(dst, c, flag, nextc, extra) \
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do { \
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||||
int isextra, isc; \
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||||
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': \
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||||
isc = 1; *dst++ = '\\'; *dst++ = 'n'; \
|
||||
break; \
|
||||
case '\r': \
|
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isc = 1; *dst++ = '\\'; *dst++ = 'r'; \
|
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break; \
|
||||
case '\b': \
|
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isc = 1; *dst++ = '\\'; *dst++ = 'b'; \
|
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break; \
|
||||
case BELL: \
|
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isc = 1; *dst++ = '\\'; *dst++ = 'a'; \
|
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break; \
|
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case '\v': \
|
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isc = 1; *dst++ = '\\'; *dst++ = 'v'; \
|
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break; \
|
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case '\t': \
|
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isc = 1; *dst++ = '\\'; *dst++ = 't'; \
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break; \
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case '\f': \
|
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isc = 1; *dst++ = '\\'; *dst++ = 'f'; \
|
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break; \
|
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case ' ': \
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isc = 1; *dst++ = '\\'; *dst++ = 's'; \
|
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break; \
|
||||
case '\0': \
|
||||
isc = 1; *dst++ = '\\'; *dst++ = '0'; \
|
||||
if (isoctal(nextc)) { \
|
||||
*dst++ = '0'; \
|
||||
*dst++ = '0'; \
|
||||
} \
|
||||
} \
|
||||
} \
|
||||
if (isc) break; \
|
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if (isextra || ((c & 0177) == ' ') || (flag & VIS_OCTAL)) { \
|
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*dst++ = '\\'; \
|
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*dst++ = (unsigned char)(((unsigned int)(unsigned char)c >> 6) & 03) + '0'; \
|
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*dst++ = (unsigned char)(((unsigned int)(unsigned char)c >> 3) & 07) + '0'; \
|
||||
*dst++ = (c & 07) + '0'; \
|
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} else { \
|
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if ((flag & VIS_NOSLASH) == 0) *dst++ = '\\'; \
|
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if (c & 0200) { \
|
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c &= 0177; *dst++ = 'M'; \
|
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} \
|
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if (iscntrl(c)) { \
|
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*dst++ = '^'; \
|
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if (c == 0177) \
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||||
*dst++ = '?'; \
|
||||
else \
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*dst++ = c + '@'; \
|
||||
} else { \
|
||||
*dst++ = '-'; *dst++ = c; \
|
||||
} \
|
||||
} \
|
||||
} while (/*CONSTCOND*/0)
|
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static char *
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do_svis(char *dst, int c, int flag, int nextc, const char *extra)
|
||||
{
|
||||
int isextra;
|
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isextra = strchr(extra, c) != NULL;
|
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if (!isextra && isascii(c) && (isgraph(c) || iswhite(c) ||
|
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((flag & VIS_SAFE) && issafe(c)))) {
|
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*dst++ = c;
|
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return dst;
|
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}
|
||||
if (flag & VIS_CSTYLE) {
|
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switch (c) {
|
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case '\n':
|
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*dst++ = '\\'; *dst++ = 'n';
|
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return dst;
|
||||
case '\r':
|
||||
*dst++ = '\\'; *dst++ = 'r';
|
||||
return dst;
|
||||
case '\b':
|
||||
*dst++ = '\\'; *dst++ = 'b';
|
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return dst;
|
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case BELL:
|
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*dst++ = '\\'; *dst++ = 'a';
|
||||
return dst;
|
||||
case '\v':
|
||||
*dst++ = '\\'; *dst++ = 'v';
|
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return dst;
|
||||
case '\t':
|
||||
*dst++ = '\\'; *dst++ = 't';
|
||||
return dst;
|
||||
case '\f':
|
||||
*dst++ = '\\'; *dst++ = 'f';
|
||||
return dst;
|
||||
case ' ':
|
||||
*dst++ = '\\'; *dst++ = 's';
|
||||
return dst;
|
||||
case '\0':
|
||||
*dst++ = '\\'; *dst++ = '0';
|
||||
if (isoctal(nextc)) {
|
||||
*dst++ = '0';
|
||||
*dst++ = '0';
|
||||
}
|
||||
return dst;
|
||||
default:
|
||||
if (isgraph(c)) {
|
||||
*dst++ = '\\'; *dst++ = c;
|
||||
return dst;
|
||||
}
|
||||
}
|
||||
}
|
||||
if (isextra || ((c & 0177) == ' ') || (flag & VIS_OCTAL)) {
|
||||
*dst++ = '\\';
|
||||
*dst++ = (u_char)(((u_int32_t)(u_char)c >> 6) & 03) + '0';
|
||||
*dst++ = (u_char)(((u_int32_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;
|
||||
}
|
||||
}
|
||||
return dst;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* svis - visually encode characters, also encoding the characters
|
||||
* pointed to by `extra'
|
||||
* pointed to by `extra'
|
||||
*/
|
||||
char *
|
||||
svis(dst, c, flag, nextc, extra)
|
||||
char *dst;
|
||||
int c, flag, nextc;
|
||||
const char *extra;
|
||||
svis(char *dst, int c, int flag, int nextc, const char *extra)
|
||||
{
|
||||
char *nextra, *to_be_freed;
|
||||
char *nextra = NULL;
|
||||
|
||||
_DIAGASSERT(dst != NULL);
|
||||
_DIAGASSERT(extra != NULL);
|
||||
nextra= to_be_freed= MAKEEXTRALIST(flag, extra);
|
||||
MAKEEXTRALIST(flag, nextra, extra);
|
||||
if (!nextra) {
|
||||
*dst = '\0'; /* can't create nextra, return "" */
|
||||
return dst;
|
||||
}
|
||||
if (flag & VIS_HTTPSTYLE)
|
||||
HVIS(dst, c, flag, nextc, nextra);
|
||||
dst = do_hvis(dst, c, flag, nextc, nextra);
|
||||
else
|
||||
SVIS(dst, c, flag, nextc, nextra);
|
||||
dst = do_svis(dst, c, flag, nextc, nextra);
|
||||
free(nextra);
|
||||
*dst = '\0';
|
||||
free(to_be_freed);
|
||||
return(dst);
|
||||
return dst;
|
||||
}
|
||||
|
||||
|
||||
@ -221,140 +248,146 @@ svis(dst, c, flag, nextc, extra)
|
||||
* 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.
|
||||
* 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;
|
||||
strsvis(char *dst, const char *csrc, int flag, const char *extra)
|
||||
{
|
||||
char c;
|
||||
int c;
|
||||
char *start;
|
||||
char *nextra, *to_be_freed;
|
||||
char *nextra = NULL;
|
||||
const unsigned char *src = (const unsigned char *)csrc;
|
||||
|
||||
_DIAGASSERT(dst != NULL);
|
||||
_DIAGASSERT(src != NULL);
|
||||
_DIAGASSERT(extra != NULL);
|
||||
nextra= to_be_freed= MAKEEXTRALIST(flag, extra);
|
||||
MAKEEXTRALIST(flag, nextra, extra);
|
||||
if (!nextra) {
|
||||
*dst = '\0'; /* can't create nextra, return "" */
|
||||
return 0;
|
||||
}
|
||||
if (flag & VIS_HTTPSTYLE) {
|
||||
for (start = dst; (c = *src++) != '\0'; /* empty */)
|
||||
HVIS(dst, c, flag, *src, nextra);
|
||||
dst = do_hvis(dst, c, flag, *src, nextra);
|
||||
} else {
|
||||
for (start = dst; (c = *src++) != '\0'; /* empty */)
|
||||
SVIS(dst, c, flag, *src, nextra);
|
||||
dst = do_svis(dst, c, flag, *src, nextra);
|
||||
}
|
||||
free(nextra);
|
||||
*dst = '\0';
|
||||
free(to_be_freed);
|
||||
return (dst - start);
|
||||
}
|
||||
|
||||
|
||||
int
|
||||
strsvisx(dst, src, len, flag, extra)
|
||||
char *dst;
|
||||
const char *src;
|
||||
size_t len;
|
||||
int flag;
|
||||
const char *extra;
|
||||
strsvisx(char *dst, const char *csrc, size_t len, int flag, const char *extra)
|
||||
{
|
||||
char c;
|
||||
unsigned char c;
|
||||
char *start;
|
||||
char *nextra, *to_be_freed;
|
||||
char *nextra = NULL;
|
||||
const unsigned char *src = (const unsigned char *)csrc;
|
||||
|
||||
_DIAGASSERT(dst != NULL);
|
||||
_DIAGASSERT(src != NULL);
|
||||
_DIAGASSERT(extra != NULL);
|
||||
nextra= to_be_freed= MAKEEXTRALIST(flag, extra);
|
||||
MAKEEXTRALIST(flag, nextra, extra);
|
||||
if (! nextra) {
|
||||
*dst = '\0'; /* can't create nextra, return "" */
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (flag & VIS_HTTPSTYLE) {
|
||||
for (start = dst; len > 0; len--) {
|
||||
c = *src++;
|
||||
HVIS(dst, c, flag, len ? *src : '\0', nextra);
|
||||
dst = do_hvis(dst, c, flag,
|
||||
len > 1 ? *src : '\0', nextra);
|
||||
}
|
||||
} else {
|
||||
for (start = dst; len > 0; len--) {
|
||||
c = *src++;
|
||||
SVIS(dst, c, flag, len ? *src : '\0', nextra);
|
||||
dst = do_svis(dst, c, flag,
|
||||
len > 1 ? *src : '\0', nextra);
|
||||
}
|
||||
}
|
||||
free(nextra);
|
||||
*dst = '\0';
|
||||
free(to_be_freed);
|
||||
return (dst - start);
|
||||
}
|
||||
#endif
|
||||
|
||||
|
||||
#if !HAVE_VIS
|
||||
/*
|
||||
* vis - visually encode characters
|
||||
*/
|
||||
char *
|
||||
vis(dst, c, flag, nextc)
|
||||
char *dst;
|
||||
int c, flag, nextc;
|
||||
|
||||
vis(char *dst, int c, int flag, int nextc)
|
||||
{
|
||||
char *extra, *to_be_freed;
|
||||
char *extra = NULL;
|
||||
unsigned char uc = (unsigned char)c;
|
||||
|
||||
_DIAGASSERT(dst != NULL);
|
||||
|
||||
extra= to_be_freed= MAKEEXTRALIST(flag, "");
|
||||
|
||||
MAKEEXTRALIST(flag, extra, "");
|
||||
if (! extra) {
|
||||
*dst = '\0'; /* can't create extra, return "" */
|
||||
return dst;
|
||||
}
|
||||
if (flag & VIS_HTTPSTYLE)
|
||||
HVIS(dst, c, flag, nextc, extra);
|
||||
dst = do_hvis(dst, uc, flag, nextc, extra);
|
||||
else
|
||||
SVIS(dst, c, flag, nextc, extra);
|
||||
dst = do_svis(dst, uc, flag, nextc, extra);
|
||||
free(extra);
|
||||
*dst = '\0';
|
||||
free(to_be_freed);
|
||||
return (dst);
|
||||
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.
|
||||
* 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;
|
||||
strvis(char *dst, const char *src, int flag)
|
||||
{
|
||||
char *extra;
|
||||
int tmp;
|
||||
char *extra = NULL;
|
||||
int rv;
|
||||
|
||||
extra= MAKEEXTRALIST(flag, "");
|
||||
tmp= strsvis(dst, src, flag, extra);
|
||||
MAKEEXTRALIST(flag, extra, "");
|
||||
if (!extra) {
|
||||
*dst = '\0'; /* can't create extra, return "" */
|
||||
return 0;
|
||||
}
|
||||
rv = strsvis(dst, src, flag, extra);
|
||||
free(extra);
|
||||
return tmp;
|
||||
return rv;
|
||||
}
|
||||
|
||||
|
||||
int
|
||||
strvisx(dst, src, len, flag)
|
||||
char *dst;
|
||||
const char *src;
|
||||
size_t len;
|
||||
int flag;
|
||||
strvisx(char *dst, const char *src, size_t len, int flag)
|
||||
{
|
||||
char *extra;
|
||||
int tmp;
|
||||
char *extra = NULL;
|
||||
int rv;
|
||||
|
||||
extra= MAKEEXTRALIST(flag, "");
|
||||
tmp= strsvisx(dst, src, len, flag, extra);
|
||||
MAKEEXTRALIST(flag, extra, "");
|
||||
if (!extra) {
|
||||
*dst = '\0'; /* can't create extra, return "" */
|
||||
return 0;
|
||||
}
|
||||
rv = strsvisx(dst, src, len, flag, extra);
|
||||
free(extra);
|
||||
return tmp;
|
||||
return rv;
|
||||
}
|
||||
#endif
|
||||
|
||||
Reference in New Issue
Block a user