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Sync up vis.* for stravis().

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This commit is contained in:
Nicholas Marriott
2015-09-01 21:08:19 +01:00
parent 2c6ea705fd
commit 2ebef95994
3 changed files with 55 additions and 25 deletions
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56
compat/vis.c
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@@ -1,4 +1,4 @@
/* $OpenBSD: vis.c,v 1.19 2005/09/01 17:15:49 millert Exp $ */
/* $OpenBSD: vis.c,v 1.24 2015/07/20 01:52:28 millert Exp $ */
/*-
* Copyright (c) 1989, 1993
* The Regents of the University of California. All rights reserved.
@@ -29,14 +29,17 @@
*/
#include <sys/types.h>
#include <limits.h>
#include <errno.h>
#include <ctype.h>
#include <limits.h>
#include <string.h>
#include <stdlib.h>
#include "tmux.h"
#define isoctal(c) (((u_char)(c)) >= '0' && ((u_char)(c)) <= '7')
#define isvisible(c) \
#define isvisible(c,flag) \
(((c) == '\\' || (flag & VIS_ALL) == 0) && \
(((u_int)(c) <= UCHAR_MAX && isascii((u_char)(c)) && \
(((c) != '*' && (c) != '?' && (c) != '[' && (c) != '#') || \
(flag & VIS_GLOB) == 0) && isgraph((u_char)(c))) || \
@@ -45,7 +48,7 @@
((flag & VIS_NL) == 0 && (c) == '\n') || \
((flag & VIS_SAFE) && ((c) == '\b' || \
(c) == '\007' || (c) == '\r' || \
isgraph((u_char)(c)))))
isgraph((u_char)(c))))))
/*
* vis - visually encode characters
@@ -53,10 +56,11 @@
char *
vis(char *dst, int c, int flag, int nextc)
{
if (isvisible(c)) {
*dst++ = c;
if (c == '\\' && (flag & VIS_NOSLASH) == 0)
if (isvisible(c, flag)) {
if ((c == '"' && (flag & VIS_DQ) != 0) ||
(c == '\\' && (flag & VIS_NOSLASH) == 0))
*dst++ = '\\';
*dst++ = c;
*dst = '\0';
return (dst);
}
@@ -136,10 +140,10 @@ done:
/*
* strvis, strnvis, 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.
*
* Strnvis will write no more than siz-1 bytes (and will NULL terminate).
* The number of bytes needed to fully encode the string is returned.
@@ -168,19 +172,18 @@ strnvis(char *dst, const char *src, size_t siz, int flag)
i = 0;
for (start = dst, end = start + siz - 1; (c = *src) && dst < end; ) {
if (isvisible(c)) {
i = 1;
*dst++ = c;
if (c == '\\' && (flag & VIS_NOSLASH) == 0) {
if (isvisible(c, flag)) {
if ((c == '"' && (flag & VIS_DQ) != 0) ||
(c == '\\' && (flag & VIS_NOSLASH) == 0)) {
/* need space for the extra '\\' */
if (dst < end)
*dst++ = '\\';
else {
dst--;
if (dst + 1 >= end) {
i = 2;
break;
}
*dst++ = '\\';
}
i = 1;
*dst++ = c;
src++;
} else {
i = vis(tbuf, c, flag, *++src) - tbuf;
@@ -203,6 +206,25 @@ strnvis(char *dst, const char *src, size_t siz, int flag)
return (dst - start);
}
int
stravis(char **outp, const char *src, int flag)
{
char *buf;
int len, serrno;
buf = calloc(4, strlen(src) + 1);
if (buf == NULL)
return -1;
len = strvis(buf, src, flag);
serrno = errno;
*outp = realloc(buf, len + 1);
if (*outp == NULL) {
*outp = buf;
errno = serrno;
}
return (len);
}
int
strvisx(char *dst, const char *src, size_t len, int flag)
{