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vis functions for Linux.
This commit is contained in:
Nicholas Marriott
parent
a1b43faa43
commit
934e6d9413
@ -1,4 +1,4 @@
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# $Id: GNUmakefile,v 1.46 2008-12-15 21:21:56 nicm Exp $
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# $Id: GNUmakefile,v 1.47 2009-01-10 12:52:57 nicm Exp $
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.PHONY: clean
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@ -31,9 +31,9 @@ SRCS= tmux.c server.c server-msg.c server-fn.c buffer.c buffer-poll.c status.c \
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cmd-show-window-options.c cmd-command-prompt.c cmd-set-buffer.c \
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cmd-show-buffer.c cmd-list-buffers.c cmd-delete-buffer.c \
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cmd-list-commands.c cmd-move-window.c cmd-select-prompt.c \
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cmd-respawn-window.c cmd-source-file.c \
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cmd-respawn-window.c cmd-source-file.c cmd-server-info.c \
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window-scroll.c window-more.c window-copy.c options.c paste.c \
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tty.c tty-keys.c tty-write.c colour.c utf8.c options-cmd.c
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tty.c tty-term.c tty-keys.c tty-write.c colour.c utf8.c options-cmd.c
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CC?= gcc
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INCDIRS+= -I. -I-
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@ -88,7 +88,7 @@ endif
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ifeq ($(shell uname),Linux)
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INCDIRS+= -Icompat
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SRCS+= compat/strlcpy.c compat/strlcat.c compat/strtonum.c \
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compat/fgetln.c compat/getopt_long.c
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compat/fgetln.c compat/getopt_long.c compat/vis.c
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CFLAGS+= $(shell getconf LFS_CFLAGS) -D_GNU_SOURCE \
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-DNO_STRLCPY -DNO_STRLCAT -DNO_STRTONUM -DNO_SETPROCTITLE \
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-DNO_QUEUE_H -DNO_TREE_H -DUSE_PTY_H -DNO_FGETLN \
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2
TODO
2
TODO
@ -63,3 +63,5 @@
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- document server-info
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- document status line options, title bits
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- document window options changes
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- FAQ: why; vim 256 colours; vim ctrl-pgup/dn; bug reports
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@ -1,4 +1,4 @@
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/* $Id: cmd-server-info.c,v 1.4 2009-01-10 01:51:21 nicm Exp $ */
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/* $Id: cmd-server-info.c,v 1.5 2009-01-10 12:52:57 nicm Exp $ */
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/*
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* Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net>
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@ -19,6 +19,7 @@
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#include <sys/types.h>
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#include <stdlib.h>
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#include <time.h>
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#include <unistd.h>
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#include <vis.h>
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219
compat/vis.c
Normal file
219
compat/vis.c
Normal file
@ -0,0 +1,219 @@
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/* $OpenBSD: vis.c,v 1.19 2005/09/01 17:15:49 millert Exp $ */
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/*-
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/types.h>
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#include <limits.h>
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#include <ctype.h>
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#include <string.h>
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#include <vis.h>
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#define isoctal(c) (((u_char)(c)) >= '0' && ((u_char)(c)) <= '7')
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#define isvisible(c) \
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(((u_int)(c) <= UCHAR_MAX && isascii((u_char)(c)) && \
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(((c) != '*' && (c) != '?' && (c) != '[' && (c) != '#') || \
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(flag & VIS_GLOB) == 0) && isgraph((u_char)(c))) || \
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((flag & VIS_SP) == 0 && (c) == ' ') || \
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((flag & VIS_TAB) == 0 && (c) == '\t') || \
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((flag & VIS_NL) == 0 && (c) == '\n') || \
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((flag & VIS_SAFE) && ((c) == '\b' || \
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(c) == '\007' || (c) == '\r' || \
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isgraph((u_char)(c)))))
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/*
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* vis - visually encode characters
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*/
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char *
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vis(char *dst, int c, int flag, int nextc)
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{
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if (isvisible(c)) {
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*dst++ = c;
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if (c == '\\' && (flag & VIS_NOSLASH) == 0)
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*dst++ = '\\';
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*dst = '\0';
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return (dst);
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}
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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++ = '\\';
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*dst++ = 'n';
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goto done;
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case '\r':
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*dst++ = '\\';
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*dst++ = 'r';
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goto done;
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case '\b':
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*dst++ = '\\';
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*dst++ = 'b';
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goto done;
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case '\a':
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*dst++ = '\\';
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*dst++ = 'a';
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goto done;
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case '\v':
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*dst++ = '\\';
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*dst++ = 'v';
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goto done;
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case '\t':
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*dst++ = '\\';
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*dst++ = 't';
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goto done;
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case '\f':
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*dst++ = '\\';
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*dst++ = 'f';
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goto done;
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case ' ':
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*dst++ = '\\';
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*dst++ = 's';
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goto done;
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case '\0':
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*dst++ = '\\';
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*dst++ = '0';
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if (isoctal(nextc)) {
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*dst++ = '0';
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*dst++ = '0';
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}
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goto done;
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}
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}
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if (((c & 0177) == ' ') || (flag & VIS_OCTAL) ||
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((flag & VIS_GLOB) && (c == '*' || c == '?' || c == '[' || c == '#'))) {
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*dst++ = '\\';
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*dst++ = ((u_char)c >> 6 & 07) + '0';
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*dst++ = ((u_char)c >> 3 & 07) + '0';
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*dst++ = ((u_char)c & 07) + '0';
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goto done;
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}
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if ((flag & VIS_NOSLASH) == 0)
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*dst++ = '\\';
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if (c & 0200) {
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c &= 0177;
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*dst++ = 'M';
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}
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if (iscntrl((u_char)c)) {
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*dst++ = '^';
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if (c == 0177)
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*dst++ = '?';
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else
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*dst++ = c + '@';
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} else {
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*dst++ = '-';
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*dst++ = c;
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}
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done:
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*dst = '\0';
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return (dst);
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}
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/*
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* strvis, strnvis, strvisx - visually encode characters from src into dst
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*
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* Dst must be 4 times the size of src to account for possible
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* expansion. The length of dst, not including the trailing NULL,
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* is returned.
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*
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* Strnvis will write no more than siz-1 bytes (and will NULL terminate).
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* The number of bytes needed to fully encode the string is returned.
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*
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* Strvisx encodes exactly len bytes from src into dst.
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* This is useful for encoding a block of data.
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*/
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int
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strvis(char *dst, const char *src, int flag)
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{
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char c;
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char *start;
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for (start = dst; (c = *src);)
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dst = vis(dst, c, flag, *++src);
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*dst = '\0';
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return (dst - start);
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}
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int
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strnvis(char *dst, const char *src, size_t siz, int flag)
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{
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char *start, *end;
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char tbuf[5];
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int c, i;
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i = 0;
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for (start = dst, end = start + siz - 1; (c = *src) && dst < end; ) {
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if (isvisible(c)) {
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i = 1;
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*dst++ = c;
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if (c == '\\' && (flag & VIS_NOSLASH) == 0) {
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/* need space for the extra '\\' */
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if (dst < end)
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*dst++ = '\\';
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else {
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dst--;
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i = 2;
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break;
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}
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}
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src++;
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} else {
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i = vis(tbuf, c, flag, *++src) - tbuf;
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if (dst + i <= end) {
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memcpy(dst, tbuf, i);
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dst += i;
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} else {
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src--;
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break;
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}
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}
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}
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if (siz > 0)
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*dst = '\0';
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if (dst + i > end) {
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/* adjust return value for truncation */
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while ((c = *src))
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dst += vis(tbuf, c, flag, *++src) - tbuf;
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}
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return (dst - start);
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}
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int
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strvisx(char *dst, const char *src, size_t len, int flag)
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{
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char c;
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char *start;
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for (start = dst; len > 1; len--) {
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c = *src;
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dst = vis(dst, c, flag, *++src);
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}
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if (len)
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dst = vis(dst, *src, flag, '\0');
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*dst = '\0';
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return (dst - start);
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}
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87
compat/vis.h
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87
compat/vis.h
Normal file
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/* $OpenBSD: vis.h,v 1.11 2005/08/09 19:38:31 millert Exp $ */
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/* $NetBSD: vis.h,v 1.4 1994/10/26 00:56:41 cgd Exp $ */
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/*-
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)vis.h 5.9 (Berkeley) 4/3/91
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*/
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#ifndef _VIS_H_
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#define _VIS_H_
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/*
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* to select alternate encoding format
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*/
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#define VIS_OCTAL 0x01 /* use octal \ddd format */
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#define VIS_CSTYLE 0x02 /* use \[nrft0..] where appropriate */
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/*
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* to alter set of characters encoded (default is to encode all
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* non-graphic except space, tab, and newline).
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*/
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#define VIS_SP 0x04 /* also encode space */
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#define VIS_TAB 0x08 /* also encode tab */
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#define VIS_NL 0x10 /* also encode newline */
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#define VIS_WHITE (VIS_SP | VIS_TAB | VIS_NL)
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#define VIS_SAFE 0x20 /* only encode "unsafe" characters */
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/*
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* other
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*/
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#define VIS_NOSLASH 0x40 /* inhibit printing '\' */
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#define VIS_GLOB 0x100 /* encode glob(3) magics and '#' */
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/*
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* unvis return codes
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*/
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#define UNVIS_VALID 1 /* character valid */
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#define UNVIS_VALIDPUSH 2 /* character valid, push back passed char */
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#define UNVIS_NOCHAR 3 /* valid sequence, no character produced */
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#define UNVIS_SYNBAD -1 /* unrecognized escape sequence */
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#define UNVIS_ERROR -2 /* decoder in unknown state (unrecoverable) */
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/*
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* unvis flags
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*/
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#define UNVIS_END 1 /* no more characters */
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#include <sys/cdefs.h>
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__BEGIN_DECLS
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char *vis(char *, int, int, int);
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int strvis(char *, const char *, int);
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int strnvis(char *, const char *, size_t, int);
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int strvisx(char *, const char *, size_t, int);
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int strunvis(char *, const char *);
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int unvis(char *, char, int *, int);
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ssize_t strnunvis(char *, const char *, size_t);
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__END_DECLS
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#endif /* !_VIS_H_ */
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