+++ /dev/null
-/*
- * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
- *
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
- *
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
- */
-/*
- * 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/types.h>
-#include <limits.h>
-#include <ctype.h>
-#include <vis.h>
-
-#define isoctal(c) (((u_char)(c)) >= '0' && ((u_char)(c)) <= '7')
-
-/*
- * vis - visually encode characters
- */
-char *
-vis(dst, c, flag, nextc)
- register char *dst;
- int c, nextc;
- register int flag;
-{
- if ((u_int)c <= UCHAR_MAX && isgraph(c) ||
- ((flag & VIS_SP) == 0 && c == ' ') ||
- ((flag & VIS_TAB) == 0 && c == '\t') ||
- ((flag & VIS_NL) == 0 && c == '\n') ||
- ((flag & VIS_SAFE) && (c == '\b' || c == '\007' || c == '\r'))) {
- *dst++ = c;
- if (c == '\\' && (flag & VIS_NOSLASH) == 0)
- *dst++ = '\\';
- *dst = '\0';
- return (dst);
- }
-
- if (flag & VIS_CSTYLE) {
- switch(c) {
- case '\n':
- *dst++ = '\\';
- *dst++ = 'n';
- goto done;
- case '\r':
- *dst++ = '\\';
- *dst++ = 'r';
- goto done;
- case '\b':
- *dst++ = '\\';
- *dst++ = 'b';
- goto done;
-#if __STDC__
- case '\a':
-#else
- case '\007':
-#endif
- *dst++ = '\\';
- *dst++ = 'a';
- goto done;
- case '\v':
- *dst++ = '\\';
- *dst++ = 'v';
- goto done;
- case '\t':
- *dst++ = '\\';
- *dst++ = 't';
- goto done;
- case '\f':
- *dst++ = '\\';
- *dst++ = 'f';
- goto done;
- case ' ':
- *dst++ = '\\';
- *dst++ = 's';
- goto done;
- case '\0':
- *dst++ = '\\';
- *dst++ = '0';
- if (isoctal(nextc)) {
- *dst++ = '0';
- *dst++ = '0';
- }
- goto done;
- }
- }
- if (((c & 0177) == ' ') || (flag & VIS_OCTAL)) {
- *dst++ = '\\';
- *dst++ = ((u_char)c >> 6 & 07) + '0';
- *dst++ = ((u_char)c >> 3 & 07) + '0';
- *dst++ = ((u_char)c & 07) + '0';
- goto done;
- }
- 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;
- }
-done:
- *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)
- register char *dst;
- register const char *src;
- int flag;
-{
- register char c;
- char *start;
-
- for (start = dst; c = *src;)
- dst = vis(dst, c, flag, *++src);
- *dst = '\0';
- return (dst - start);
-}
-
-int
-strvisx(dst, src, len, flag)
- register char *dst;
- register const char *src;
- register size_t len;
- int flag;
-{
- int c;
- char *start;
-
- for (start = dst; len > 1; len--) {
- c = *src;
- dst = vis(dst, c, flag, *++src);
- }
- if (len)
- dst = vis(dst, *src, flag, '\0');
- *dst = '\0';
-
- return (dst - start);
-}
projects / apple / libc.git / blobdiff