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/*
* compat.c - compatibility routines for the deprived
*
* This file is part of zsh, the Z shell.
*
* Copyright (c) 1992-1997 Paul Falstad
* All rights reserved.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and to distribute modified versions of this software for any
* purpose, provided that the above copyright notice and the following
* two paragraphs appear in all copies of this software.
*
* In no event shall Paul Falstad or the Zsh Development Group be liable
* to any party for direct, indirect, special, incidental, or consequential
* damages arising out of the use of this software and its documentation,
* even if Paul Falstad and the Zsh Development Group have been advised of
* the possibility of such damage.
*
* Paul Falstad and the Zsh Development Group specifically disclaim any
* warranties, including, but not limited to, the implied warranties of
* merchantability and fitness for a particular purpose. The software
* provided hereunder is on an "as is" basis, and Paul Falstad and the
* Zsh Development Group have no obligation to provide maintenance,
* support, updates, enhancements, or modifications.
*
*/
#include "zsh.mdh"
#include "compat.pro"
/* Return pointer to first occurence of string t *
* in string s. Return NULL if not present. */
#ifndef HAVE_STRSTR
char *
strstr(const char *s, const char *t)
{
char *p1, *p2;
for (; *s; s++) {
for (p1 = s, p2 = t; *p2; p1++, p2++)
if (*p1 != *p2)
break;
if (!*p2)
return (char *)s;
}
return NULL;
}
#endif
#ifndef HAVE_GETHOSTNAME
int
gethostname(char *name, size_t namelen)
{
struct utsname uts;
uname(&uts);
if(strlen(uts.nodename) >= namelen) {
errno = EINVAL;
return -1;
}
strcpy(name, uts.nodename);
return 0;
}
#endif
#ifndef HAVE_GETTIMEOFDAY
int
gettimeofday(struct timeval *tv, struct timezone *tz)
{
tv->tv_usec = 0;
tv->tv_sec = (long)time((time_t) 0);
return 0;
}
#endif
/* compute the difference between two calendar times */
#ifndef HAVE_DIFFTIME
double
difftime(time_t t2, time_t t1)
{
return ((double)t2 - (double)t1);
}
#endif
#ifndef HAVE_STRERROR
extern char *sys_errlist[];
/* Get error message string associated with a particular *
* error number, and returns a pointer to that string. *
* This is not a particularly robust version of strerror. */
char *
strerror(int errnum)
{
return (sys_errlist[errnum]);
}
#endif
#if 0
/* pathconf(_PC_PATH_MAX) is not currently useful to zsh. The value *
* returned varies depending on a number of factors, e.g. the amount *
* of memory available to the operating system at a given time; thus *
* it can't be used for buffer allocation, or even as an indication *
* of whether an attempt to use or create a given pathname may fail *
* at any future time. *
* *
* The call is also permitted to fail if the argument path is not an *
* existing directory, so even to make sense of that one must search *
* for a valid directory somewhere in the path and adjust. Even if *
* it succeeds, the return value is relative to the input directory, *
* and therefore potentially relative to the length of the shortest *
* path either to that directory or to our working directory. *
* *
* Finally, see the note below for glibc; detection of pathconf() is *
* not by itself an indication that it works reliably. */
/* The documentation for pathconf() says something like: *
* The limit is returned, if one exists. If the system does *
* not have a limit for the requested resource, -1 is *
* returned, and errno is unchanged. If there is an error, *
* -1 is returned, and errno is set to reflect the nature of *
* the error. *
* *
* System calls are not permitted to set errno to 0; but we must (or *
* some other flag value) in order to determine that the resource is *
* unlimited. What use is leaving errno unchanged? Instead, define *
* a wrapper that resets errno to 0 and returns 0 for "the system *
* does not have a limit," so that -1 always means a real error. */
/**/
mod_export long
zpathmax(char *dir)
{
#ifdef HAVE_PATHCONF
long pathmax;
errno = 0;
if ((pathmax = pathconf(dir, _PC_PATH_MAX)) >= 0) {
/* Some versions of glibc pathconf return a hardwired value! */
return pathmax;
} else if (errno == EINVAL || errno == ENOENT || errno == ENOTDIR) {
/* Work backward to find a directory, until we run out of path. */
char *tail = strrchr(dir, '/');
while (tail > dir && tail[-1] == '/')
--tail;
if (tail > dir) {
*tail = 0;
pathmax = zpathmax(dir);
*tail = '/';
} else {
errno = 0;
if (tail)
pathmax = pathconf("/", _PC_PATH_MAX);
else
pathmax = pathconf(".", _PC_PATH_MAX);
}
if (pathmax > 0) {
long taillen = (tail ? strlen(tail) : (strlen(dir) + 1));
if (taillen < pathmax)
return pathmax - taillen;
else
errno = ENAMETOOLONG;
}
}
if (errno)
return -1;
else
return 0; /* pathmax should be considered unlimited */
#else
long dirlen = strlen(dir);
/* The following is wrong if dir is not an absolute path. */
return ((long) ((dirlen >= PATH_MAX) ?
((errno = ENAMETOOLONG), -1) :
((errno = 0), PATH_MAX - dirlen)));
#endif
}
#endif /* 0 */
#ifdef HAVE_SYSCONF
/*
* This is replaced by a macro from system.h if not HAVE_SYSCONF.
* 0 is returned by sysconf if _SC_OPEN_MAX is unavailable;
* -1 is returned on error
*
* Neither of these should happen, but resort to OPEN_MAX rather
* than return 0 or -1 just in case.
*
* We'll limit the open maximum to ZSH_INITIAL_OPEN_MAX to
* avoid probing ridiculous numbers of file descriptors.
*/
/**/
mod_export long
zopenmax(void)
{
long openmax;
if ((openmax = sysconf(_SC_OPEN_MAX)) < 1) {
openmax = OPEN_MAX;
} else if (openmax > OPEN_MAX) {
/* On some systems, "limit descriptors unlimited" or the *
* equivalent will set openmax to a huge number. Unless *
* there actually is a file descriptor > OPEN_MAX already *
* open, nothing in zsh requires the true maximum, and in *
* fact it causes inefficiency elsewhere if we report it. *
* So, report the maximum of OPEN_MAX or the largest open *
* descriptor (is there a better way to find that?). */
long i, j = OPEN_MAX;
if (openmax > ZSH_INITIAL_OPEN_MAX)
openmax = ZSH_INITIAL_OPEN_MAX;
for (i = j; i < openmax; i += (errno != EINTR)) {
errno = 0;
if (fcntl(i, F_GETFL, 0) < 0 &&
(errno == EBADF || errno == EINTR))
continue;
j = i;
}
openmax = j;
}
return (max_zsh_fd > openmax) ? max_zsh_fd : openmax;
}
#endif
/*
* Rationalise the current directory, returning the string.
*
* If "d" is not NULL, it is used to store information about the
* directory. The returned name is also present in d->dirname and is in
* permanently allocated memory. The handling of this case depends on
* whether the fchdir() system call is available; if it is, it is assumed
* the caller is able to restore the current directory. On successfully
* identifying the directory the function returns immediately rather
* than ascending the hierarchy.
*
* If "d" is NULL, no assumption about the caller's behaviour is
* made. The returned string is in heap memory. This case is
* always handled by changing directory up the hierarchy.
*
* On Cygwin or other systems where USE_GETCWD is defined (at the
* time of writing only QNX), we skip all the above and use the
* getcwd() system call.
*/
/**/
mod_export char *
zgetdir(struct dirsav *d)
{
char nbuf[PATH_MAX+3];
char *buf;
int bufsiz, pos;
struct stat sbuf;
ino_t pino;
dev_t pdev;
#if !defined(__CYGWIN__) && !defined(USE_GETCWD)
struct dirent *de;
DIR *dir;
dev_t dev;
ino_t ino;
int len;
#endif
buf = zhalloc(bufsiz = PATH_MAX);
pos = bufsiz - 1;
buf[pos] = '\0';
strcpy(nbuf, "../");
if (stat(".", &sbuf) < 0) {
return NULL;
}
/* Record the initial inode and device */
pino = sbuf.st_ino;
pdev = sbuf.st_dev;
if (d)
d->ino = pino, d->dev = pdev;
#if !defined(__CYGWIN__) && !defined(USE_GETCWD)
#ifdef HAVE_FCHDIR
else
#endif
holdintr();
for (;;) {
/* Examine the parent of the current directory. */
if (stat("..", &sbuf) < 0)
break;
/* Inode and device of curtent directory */
ino = pino;
dev = pdev;
/* Inode and device of current directory's parent */
pino = sbuf.st_ino;
pdev = sbuf.st_dev;
/* If they're the same, we've reached the root directory. */
if (ino == pino && dev == pdev) {
if (!buf[pos])
buf[--pos] = '/';
if (d) {
#ifndef HAVE_FCHDIR
zchdir(buf + pos);
noholdintr();
#endif
return d->dirname = ztrdup(buf + pos);
}
zchdir(buf + pos);
noholdintr();
return buf + pos;
}
/* Search the parent for the current directory. */
if (!(dir = opendir("..")))
break;
while ((de = readdir(dir))) {
char *fn = de->d_name;
/* Ignore `.' and `..'. */
if (fn[0] == '.' &&
(fn[1] == '\0' ||
(fn[1] == '.' && fn[2] == '\0')))
continue;
#ifdef HAVE_STRUCT_DIRENT_D_STAT
if(de->d_stat.st_dev == dev && de->d_stat.st_ino == ino) {
/* Found the directory we're currently in */
strncpy(nbuf + 3, fn, PATH_MAX);
break;
}
#else /* !HAVE_STRUCT_DIRENT_D_STAT */
# ifdef HAVE_STRUCT_DIRENT_D_INO
if (dev != pdev || (ino_t) de->d_ino == ino)
# endif /* HAVE_STRUCT_DIRENT_D_INO */
{
/* Maybe found directory, need to check device & inode */
strncpy(nbuf + 3, fn, PATH_MAX);
lstat(nbuf, &sbuf);
if (sbuf.st_dev == dev && sbuf.st_ino == ino)
break;
}
#endif /* !HAVE_STRUCT_DIRENT_D_STAT */
}
closedir(dir);
if (!de)
break; /* Not found */
/*
* We get the "/" free just by copying from nbuf+2 instead
* of nbuf+3, which is where we copied the path component.
* This means buf[pos] is always a "/".
*/
len = strlen(nbuf + 2);
pos -= len;
while (pos <= 1) {
char *newbuf = zhalloc(2*bufsiz);
memcpy(newbuf + bufsiz, buf, bufsiz);
buf = newbuf;
pos += bufsiz;
bufsiz *= 2;
}
memcpy(buf + pos, nbuf + 2, len);
#ifdef HAVE_FCHDIR
if (d)
return d->dirname = ztrdup(buf + pos + 1);
#endif
if (chdir(".."))
break;
}
/*
* Fix up the directory, if necessary.
* We're changing back down the hierarchy, ignore the
* "/" at buf[pos].
*/
if (d) {
#ifndef HAVE_FCHDIR
if (buf[pos])
zchdir(buf + pos + 1);
noholdintr();
#endif
return NULL;
}
if (buf[pos])
zchdir(buf + pos + 1);
noholdintr();
#else /* __CYGWIN__, USE_GETCWD cases */
if (!getcwd(buf, bufsiz)) {
if (d) {
return NULL;
}
} else {
if (d) {
return d->dirname = ztrdup(buf);
}
return buf;
}
#endif
/*
* Something bad happened.
* This has been seen when inside a special directory,
* such as the Netapp .snapshot directory, that doesn't
* appear as a directory entry in the parent directory.
* We'll just need our best guess.
*
* We only get here from zgetcwd(); let that fall back to pwd.
*/
return NULL;
}
/*
* Try to find the current directory.
* If we couldn't work it out internally, fall back to getcwd().
* If it fails, fall back to pwd; if zgetcwd() is being used
* to set pwd, pwd should be NULL and we just return ".".
*/
/**/
char *
zgetcwd(void)
{
char *ret = zgetdir(NULL);
#ifdef HAVE_GETCWD
if (!ret) {
#ifdef GETCWD_CALLS_MALLOC
char *cwd = getcwd(NULL, 0);
if (cwd) {
ret = dupstring(cwd);
free(cwd);
}
#else
char *cwdbuf = zalloc(PATH_MAX);
ret = getcwd(cwdbuf, PATH_MAX);
if (ret)
ret = dupstring(ret);
free(cwdbuf);
#endif /* GETCWD_CALLS_MALLOC */
}
#endif /* HAVE_GETCWD */
if (!ret)
ret = pwd;
if (!ret)
ret = dupstring(".");
return ret;
}
/* chdir with arbitrary long pathname. Returns 0 on success, -1 on normal *
* failure and -2 when chdir failed and the current directory is lost. */
/**/
mod_export int
zchdir(char *dir)
{
char *s;
int currdir = -2;
for (;;) {
if (!*dir || chdir(dir) == 0) {
#ifdef HAVE_FCHDIR
if (currdir >= 0)
close(currdir);
#endif
return 0;
}
if ((errno != ENAMETOOLONG && errno != ENOMEM) ||
strlen(dir) < PATH_MAX)
break;
for (s = dir + PATH_MAX - 1; s > dir && *s != '/'; s--)
;
if (s == dir)
break;
#ifdef HAVE_FCHDIR
if (currdir == -2)
currdir = open(".", O_RDONLY|O_NOCTTY);
#endif
*s = '\0';
if (chdir(dir) < 0) {
*s = '/';
break;
}
#ifndef HAVE_FCHDIR
currdir = -1;
#endif
*s = '/';
while (*++s == '/')
;
dir = s;
}
#ifdef HAVE_FCHDIR
if (currdir >= 0) {
if (fchdir(currdir) < 0) {
close(currdir);
return -2;
}
close(currdir);
return -1;
}
#endif
return currdir == -2 ? -1 : -2;
}
/*
* How to print out a 64 bit integer. This isn't needed (1) if longs
* are 64 bit, since ordinary %ld will work (2) if we couldn't find a
* 64 bit type anyway.
*/
/**/
#ifdef ZSH_64_BIT_TYPE
/**/
mod_export char *
output64(zlong val)
{
static char llbuf[DIGBUFSIZE];
convbase(llbuf, val, 0);
return llbuf;
}
/**/
#endif /* ZSH_64_BIT_TYPE */
#ifndef HAVE_STRTOUL
/*
* Copyright (c) 1990, 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. 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.
*/
/*
* Convert a string to an unsigned long integer.
*
* Ignores `locale' stuff. Assumes that the upper and lower case
* alphabets and digits are each contiguous.
*/
unsigned long
strtoul(nptr, endptr, base)
const char *nptr;
char **endptr;
int base;
{
const char *s;
unsigned long acc, cutoff;
int c;
int neg, any, cutlim;
/* endptr may be NULL */
s = nptr;
do {
c = (unsigned char) *s++;
} while (isspace(c));
if (c == '-') {
neg = 1;
c = *s++;
} else {
neg = 0;
if (c == '+')
c = *s++;
}
if ((base == 0 || base == 16) &&
c == '0' && (*s == 'x' || *s == 'X')) {
c = s[1];
s += 2;
base = 16;
}
if (base == 0)
base = c == '0' ? 8 : 10;
cutoff = ULONG_MAX / (unsigned long)base;
cutlim = (int)(ULONG_MAX % (unsigned long)base);
for (acc = 0, any = 0;; c = (unsigned char) *s++) {
if (isdigit(c))
c -= '0';
else if (isalpha(c)) {
c -= isupper(c) ? 'A' - 10 : 'a' - 10;
} else
break;
if (c >= base)
break;
if (any < 0)
continue;
if (acc > cutoff || (acc == cutoff && c > cutlim)) {
any = -1;
acc = ULONG_MAX;
errno = ERANGE;
} else {
any = 1;
acc *= (unsigned long)base;
acc += c;
}
}
if (neg && any > 0)
acc = -acc;
if (endptr != NULL)
*endptr = any ? s - 1 : nptr;
return (acc);
}
#endif /* HAVE_STRTOUL */
/**/
#ifdef BROKEN_WCWIDTH
/*
* This is an implementation of wcwidth() and wcswidth() (defined in
* IEEE Std 1002.1-2001) for Unicode.
*
* http://www.opengroup.org/onlinepubs/007904975/functions/wcwidth.html
* http://www.opengroup.org/onlinepubs/007904975/functions/wcswidth.html
*
* In fixed-width output devices, Latin characters all occupy a single
* "cell" position of equal width, whereas ideographic CJK characters
* occupy two such cells. Interoperability between terminal-line
* applications and (teletype-style) character terminals using the
* UTF-8 encoding requires agreement on which character should advance
* the cursor by how many cell positions. No established formal
* standards exist at present on which Unicode character shall occupy
* how many cell positions on character terminals. These routines are
* a first attempt of defining such behavior based on simple rules
* applied to data provided by the Unicode Consortium.
*
* For some graphical characters, the Unicode standard explicitly
* defines a character-cell width via the definition of the East Asian
* FullWidth (F), Wide (W), Half-width (H), and Narrow (Na) classes.
* In all these cases, there is no ambiguity about which width a
* terminal shall use. For characters in the East Asian Ambiguous (A)
* class, the width choice depends purely on a preference of backward
* compatibility with either historic CJK or Western practice.
* Choosing single-width for these characters is easy to justify as
* the appropriate long-term solution, as the CJK practice of
* displaying these characters as double-width comes from historic
* implementation simplicity (8-bit encoded characters were displayed
* single-width and 16-bit ones double-width, even for Greek,
* Cyrillic, etc.) and not any typographic considerations.
*
* Much less clear is the choice of width for the Not East Asian
* (Neutral) class. Existing practice does not dictate a width for any
* of these characters. It would nevertheless make sense
* typographically to allocate two character cells to characters such
* as for instance EM SPACE or VOLUME INTEGRAL, which cannot be
* represented adequately with a single-width glyph. The following
* routines at present merely assign a single-cell width to all
* neutral characters, in the interest of simplicity. This is not
* entirely satisfactory and should be reconsidered before
* establishing a formal standard in this area. At the moment, the
* decision which Not East Asian (Neutral) characters should be
* represented by double-width glyphs cannot yet be answered by
* applying a simple rule from the Unicode database content. Setting
* up a proper standard for the behavior of UTF-8 character terminals
* will require a careful analysis not only of each Unicode character,
* but also of each presentation form, something the author of these
* routines has avoided to do so far.
*
* http://www.unicode.org/unicode/reports/tr11/
*
* Markus Kuhn -- 2007-05-26 (Unicode 5.0)
*
* Permission to use, copy, modify, and distribute this software
* for any purpose and without fee is hereby granted. The author
* disclaims all warranties with regard to this software.
*
* Latest version: http://www.cl.cam.ac.uk/~mgk25/ucs/wcwidth.c
*/
struct interval {
int first;
int last;
};
/* auxiliary function for binary search in interval table */
static int bisearch(wchar_t ucs, const struct interval *table, int max) {
int min = 0;
int mid;
if (ucs < table[0].first || ucs > table[max].last)
return 0;
while (max >= min) {
mid = (min + max) / 2;
if (ucs > table[mid].last)
min = mid + 1;
else if (ucs < table[mid].first)
max = mid - 1;
else
return 1;
}
return 0;
}
/* The following two functions define the column width of an ISO 10646
* character as follows:
*
* - The null character (U+0000) has a column width of 0.
*
* - Other C0/C1 control characters and DEL will lead to a return
* value of -1.
*
* - Non-spacing and enclosing combining characters (general
* category code Mn or Me in the Unicode database) have a
* column width of 0.
*
* - SOFT HYPHEN (U+00AD) has a column width of 1.
*
* - Other format characters (general category code Cf in the Unicode
* database) and ZERO WIDTH SPACE (U+200B) have a column width of 0.
*
* - Hangul Jamo medial vowels and final consonants (U+1160-U+11FF)
* have a column width of 0.
*
* - Spacing characters in the East Asian Wide (W) or East Asian
* Full-width (F) category as defined in Unicode Technical
* Report #11 have a column width of 2.
*
* - All remaining characters (including all printable
* ISO 8859-1 and WGL4 characters, Unicode control characters,
* etc.) have a column width of 1.
*
* This implementation assumes that wchar_t characters are encoded
* in ISO 10646.
*/
/**/
int
mk_wcwidth(wchar_t ucs)
{
/* sorted list of non-overlapping intervals of non-spacing characters */
/* generated by "uniset +cat=Me +cat=Mn +cat=Cf -00AD +1160-11FF +200B c" */
static const struct interval combining[] = {
{ 0x0300, 0x036F }, { 0x0483, 0x0486 }, { 0x0488, 0x0489 },
{ 0x0591, 0x05BD }, { 0x05BF, 0x05BF }, { 0x05C1, 0x05C2 },
{ 0x05C4, 0x05C5 }, { 0x05C7, 0x05C7 }, { 0x0600, 0x0603 },
{ 0x0610, 0x0615 }, { 0x064B, 0x065E }, { 0x0670, 0x0670 },
{ 0x06D6, 0x06E4 }, { 0x06E7, 0x06E8 }, { 0x06EA, 0x06ED },
{ 0x070F, 0x070F }, { 0x0711, 0x0711 }, { 0x0730, 0x074A },
{ 0x07A6, 0x07B0 }, { 0x07EB, 0x07F3 }, { 0x0901, 0x0902 },
{ 0x093C, 0x093C }, { 0x0941, 0x0948 }, { 0x094D, 0x094D },
{ 0x0951, 0x0954 }, { 0x0962, 0x0963 }, { 0x0981, 0x0981 },
{ 0x09BC, 0x09BC }, { 0x09C1, 0x09C4 }, { 0x09CD, 0x09CD },
{ 0x09E2, 0x09E3 }, { 0x0A01, 0x0A02 }, { 0x0A3C, 0x0A3C },
{ 0x0A41, 0x0A42 }, { 0x0A47, 0x0A48 }, { 0x0A4B, 0x0A4D },
{ 0x0A70, 0x0A71 }, { 0x0A81, 0x0A82 }, { 0x0ABC, 0x0ABC },
{ 0x0AC1, 0x0AC5 }, { 0x0AC7, 0x0AC8 }, { 0x0ACD, 0x0ACD },
{ 0x0AE2, 0x0AE3 }, { 0x0B01, 0x0B01 }, { 0x0B3C, 0x0B3C },
{ 0x0B3F, 0x0B3F }, { 0x0B41, 0x0B43 }, { 0x0B4D, 0x0B4D },
{ 0x0B56, 0x0B56 }, { 0x0B82, 0x0B82 }, { 0x0BC0, 0x0BC0 },
{ 0x0BCD, 0x0BCD }, { 0x0C3E, 0x0C40 }, { 0x0C46, 0x0C48 },
{ 0x0C4A, 0x0C4D }, { 0x0C55, 0x0C56 }, { 0x0CBC, 0x0CBC },
{ 0x0CBF, 0x0CBF }, { 0x0CC6, 0x0CC6 }, { 0x0CCC, 0x0CCD },
{ 0x0CE2, 0x0CE3 }, { 0x0D41, 0x0D43 }, { 0x0D4D, 0x0D4D },
{ 0x0DCA, 0x0DCA }, { 0x0DD2, 0x0DD4 }, { 0x0DD6, 0x0DD6 },
{ 0x0E31, 0x0E31 }, { 0x0E34, 0x0E3A }, { 0x0E47, 0x0E4E },
{ 0x0EB1, 0x0EB1 }, { 0x0EB4, 0x0EB9 }, { 0x0EBB, 0x0EBC },
{ 0x0EC8, 0x0ECD }, { 0x0F18, 0x0F19 }, { 0x0F35, 0x0F35 },
{ 0x0F37, 0x0F37 }, { 0x0F39, 0x0F39 }, { 0x0F71, 0x0F7E },
{ 0x0F80, 0x0F84 }, { 0x0F86, 0x0F87 }, { 0x0F90, 0x0F97 },
{ 0x0F99, 0x0FBC }, { 0x0FC6, 0x0FC6 }, { 0x102D, 0x1030 },
{ 0x1032, 0x1032 }, { 0x1036, 0x1037 }, { 0x1039, 0x1039 },
{ 0x1058, 0x1059 }, { 0x1160, 0x11FF }, { 0x135F, 0x135F },
{ 0x1712, 0x1714 }, { 0x1732, 0x1734 }, { 0x1752, 0x1753 },
{ 0x1772, 0x1773 }, { 0x17B4, 0x17B5 }, { 0x17B7, 0x17BD },
{ 0x17C6, 0x17C6 }, { 0x17C9, 0x17D3 }, { 0x17DD, 0x17DD },
{ 0x180B, 0x180D }, { 0x18A9, 0x18A9 }, { 0x1920, 0x1922 },
{ 0x1927, 0x1928 }, { 0x1932, 0x1932 }, { 0x1939, 0x193B },
{ 0x1A17, 0x1A18 }, { 0x1B00, 0x1B03 }, { 0x1B34, 0x1B34 },
{ 0x1B36, 0x1B3A }, { 0x1B3C, 0x1B3C }, { 0x1B42, 0x1B42 },
{ 0x1B6B, 0x1B73 }, { 0x1DC0, 0x1DCA }, { 0x1DFE, 0x1DFF },
{ 0x200B, 0x200F }, { 0x202A, 0x202E }, { 0x2060, 0x2063 },
{ 0x206A, 0x206F }, { 0x20D0, 0x20EF }, { 0x302A, 0x302F },
{ 0x3099, 0x309A }, { 0xA806, 0xA806 }, { 0xA80B, 0xA80B },
{ 0xA825, 0xA826 }, { 0xFB1E, 0xFB1E }, { 0xFE00, 0xFE0F },
{ 0xFE20, 0xFE23 }, { 0xFEFF, 0xFEFF }, { 0xFFF9, 0xFFFB },
{ 0x10A01, 0x10A03 }, { 0x10A05, 0x10A06 }, { 0x10A0C, 0x10A0F },
{ 0x10A38, 0x10A3A }, { 0x10A3F, 0x10A3F }, { 0x1D167, 0x1D169 },
{ 0x1D173, 0x1D182 }, { 0x1D185, 0x1D18B }, { 0x1D1AA, 0x1D1AD },
{ 0x1D242, 0x1D244 }, { 0xE0001, 0xE0001 }, { 0xE0020, 0xE007F },
{ 0xE0100, 0xE01EF }
};
/* test for 8-bit control characters */
if (ucs == 0)
return 0;
if (ucs < 32 || (ucs >= 0x7f && ucs < 0xa0))
return -1;
/* binary search in table of non-spacing characters */
if (bisearch(ucs, combining,
sizeof(combining) / sizeof(struct interval) - 1))
return 0;
/* if we arrive here, ucs is not a combining or C0/C1 control character */
return 1 +
(ucs >= 0x1100 &&
(ucs <= 0x115f || /* Hangul Jamo init. consonants */
ucs == 0x2329 || ucs == 0x232a ||
(ucs >= 0x2e80 && ucs <= 0xa4cf &&
ucs != 0x303f) || /* CJK ... Yi */
(ucs >= 0xac00 && ucs <= 0xd7a3) || /* Hangul Syllables */
(ucs >= 0xf900 && ucs <= 0xfaff) || /* CJK Compatibility Ideographs */
(ucs >= 0xfe10 && ucs <= 0xfe19) || /* Vertical forms */
(ucs >= 0xfe30 && ucs <= 0xfe6f) || /* CJK Compatibility Forms */
(ucs >= 0xff00 && ucs <= 0xff60) || /* Fullwidth Forms */
(ucs >= 0xffe0 && ucs <= 0xffe6) ||
(ucs >= 0x20000 && ucs <= 0x2fffd) ||
(ucs >= 0x30000 && ucs <= 0x3fffd)));
}
/*
* The following functions are part of the original wcwidth.c:
* we don't use them but I've kept them in case - pws.
*/
#if 0
int mk_wcswidth(const wchar_t *pwcs, size_t n)
{
int w, width = 0;
for (;*pwcs && n-- > 0; pwcs++)
if ((w = mk_wcwidth(*pwcs)) < 0)
return -1;
else
width += w;
return width;
}
/*
* The following functions are the same as mk_wcwidth() and
* mk_wcswidth(), except that spacing characters in the East Asian
* Ambiguous (A) category as defined in Unicode Technical Report #11
* have a column width of 2. This variant might be useful for users of
* CJK legacy encodings who want to migrate to UCS without changing
* the traditional terminal character-width behaviour. It is not
* otherwise recommended for general use.
*/
int mk_wcwidth_cjk(wchar_t ucs)
{
/* sorted list of non-overlapping intervals of East Asian Ambiguous
* characters, generated by "uniset +WIDTH-A -cat=Me -cat=Mn -cat=Cf c" */
static const struct interval ambiguous[] = {
{ 0x00A1, 0x00A1 }, { 0x00A4, 0x00A4 }, { 0x00A7, 0x00A8 },
{ 0x00AA, 0x00AA }, { 0x00AE, 0x00AE }, { 0x00B0, 0x00B4 },
{ 0x00B6, 0x00BA }, { 0x00BC, 0x00BF }, { 0x00C6, 0x00C6 },
{ 0x00D0, 0x00D0 }, { 0x00D7, 0x00D8 }, { 0x00DE, 0x00E1 },
{ 0x00E6, 0x00E6 }, { 0x00E8, 0x00EA }, { 0x00EC, 0x00ED },
{ 0x00F0, 0x00F0 }, { 0x00F2, 0x00F3 }, { 0x00F7, 0x00FA },
{ 0x00FC, 0x00FC }, { 0x00FE, 0x00FE }, { 0x0101, 0x0101 },
{ 0x0111, 0x0111 }, { 0x0113, 0x0113 }, { 0x011B, 0x011B },
{ 0x0126, 0x0127 }, { 0x012B, 0x012B }, { 0x0131, 0x0133 },
{ 0x0138, 0x0138 }, { 0x013F, 0x0142 }, { 0x0144, 0x0144 },
{ 0x0148, 0x014B }, { 0x014D, 0x014D }, { 0x0152, 0x0153 },
{ 0x0166, 0x0167 }, { 0x016B, 0x016B }, { 0x01CE, 0x01CE },
{ 0x01D0, 0x01D0 }, { 0x01D2, 0x01D2 }, { 0x01D4, 0x01D4 },
{ 0x01D6, 0x01D6 }, { 0x01D8, 0x01D8 }, { 0x01DA, 0x01DA },
{ 0x01DC, 0x01DC }, { 0x0251, 0x0251 }, { 0x0261, 0x0261 },
{ 0x02C4, 0x02C4 }, { 0x02C7, 0x02C7 }, { 0x02C9, 0x02CB },
{ 0x02CD, 0x02CD }, { 0x02D0, 0x02D0 }, { 0x02D8, 0x02DB },
{ 0x02DD, 0x02DD }, { 0x02DF, 0x02DF }, { 0x0391, 0x03A1 },
{ 0x03A3, 0x03A9 }, { 0x03B1, 0x03C1 }, { 0x03C3, 0x03C9 },
{ 0x0401, 0x0401 }, { 0x0410, 0x044F }, { 0x0451, 0x0451 },
{ 0x2010, 0x2010 }, { 0x2013, 0x2016 }, { 0x2018, 0x2019 },
{ 0x201C, 0x201D }, { 0x2020, 0x2022 }, { 0x2024, 0x2027 },
{ 0x2030, 0x2030 }, { 0x2032, 0x2033 }, { 0x2035, 0x2035 },
{ 0x203B, 0x203B }, { 0x203E, 0x203E }, { 0x2074, 0x2074 },
{ 0x207F, 0x207F }, { 0x2081, 0x2084 }, { 0x20AC, 0x20AC },
{ 0x2103, 0x2103 }, { 0x2105, 0x2105 }, { 0x2109, 0x2109 },
{ 0x2113, 0x2113 }, { 0x2116, 0x2116 }, { 0x2121, 0x2122 },
{ 0x2126, 0x2126 }, { 0x212B, 0x212B }, { 0x2153, 0x2154 },
{ 0x215B, 0x215E }, { 0x2160, 0x216B }, { 0x2170, 0x2179 },
{ 0x2190, 0x2199 }, { 0x21B8, 0x21B9 }, { 0x21D2, 0x21D2 },
{ 0x21D4, 0x21D4 }, { 0x21E7, 0x21E7 }, { 0x2200, 0x2200 },
{ 0x2202, 0x2203 }, { 0x2207, 0x2208 }, { 0x220B, 0x220B },
{ 0x220F, 0x220F }, { 0x2211, 0x2211 }, { 0x2215, 0x2215 },
{ 0x221A, 0x221A }, { 0x221D, 0x2220 }, { 0x2223, 0x2223 },
{ 0x2225, 0x2225 }, { 0x2227, 0x222C }, { 0x222E, 0x222E },
{ 0x2234, 0x2237 }, { 0x223C, 0x223D }, { 0x2248, 0x2248 },
{ 0x224C, 0x224C }, { 0x2252, 0x2252 }, { 0x2260, 0x2261 },
{ 0x2264, 0x2267 }, { 0x226A, 0x226B }, { 0x226E, 0x226F },
{ 0x2282, 0x2283 }, { 0x2286, 0x2287 }, { 0x2295, 0x2295 },
{ 0x2299, 0x2299 }, { 0x22A5, 0x22A5 }, { 0x22BF, 0x22BF },
{ 0x2312, 0x2312 }, { 0x2460, 0x24E9 }, { 0x24EB, 0x254B },
{ 0x2550, 0x2573 }, { 0x2580, 0x258F }, { 0x2592, 0x2595 },
{ 0x25A0, 0x25A1 }, { 0x25A3, 0x25A9 }, { 0x25B2, 0x25B3 },
{ 0x25B6, 0x25B7 }, { 0x25BC, 0x25BD }, { 0x25C0, 0x25C1 },
{ 0x25C6, 0x25C8 }, { 0x25CB, 0x25CB }, { 0x25CE, 0x25D1 },
{ 0x25E2, 0x25E5 }, { 0x25EF, 0x25EF }, { 0x2605, 0x2606 },
{ 0x2609, 0x2609 }, { 0x260E, 0x260F }, { 0x2614, 0x2615 },
{ 0x261C, 0x261C }, { 0x261E, 0x261E }, { 0x2640, 0x2640 },
{ 0x2642, 0x2642 }, { 0x2660, 0x2661 }, { 0x2663, 0x2665 },
{ 0x2667, 0x266A }, { 0x266C, 0x266D }, { 0x266F, 0x266F },
{ 0x273D, 0x273D }, { 0x2776, 0x277F }, { 0xE000, 0xF8FF },
{ 0xFFFD, 0xFFFD }, { 0xF0000, 0xFFFFD }, { 0x100000, 0x10FFFD }
};
/* binary search in table of non-spacing characters */
if (bisearch(ucs, ambiguous,
sizeof(ambiguous) / sizeof(struct interval) - 1))
return 2;
return mk_wcwidth(ucs);
}
int mk_wcswidth_cjk(const wchar_t *pwcs, size_t n)
{
int w, width = 0;
for (;*pwcs && n-- > 0; pwcs++)
if ((w = mk_wcwidth_cjk(*pwcs)) < 0)
return -1;
else
width += w;
return width;
}
#endif /* 0 */
/**/
#endif /* BROKEN_WCWIDTH */
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