/* * 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) { const 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); zfree(cwdbuf, PATH_MAX); #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 */ /**/ #if defined(BROKEN_WCWIDTH) && (defined(__STDC_ISO_10646__) || defined(__APPLE__)) /* * 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 && (__STDC_ISO_10646__ || __APPLE__) */ /**/ #if defined(__APPLE__) && defined(BROKEN_ISPRINT) /**/ int isprint_ascii(int c) { if (!strcmp(nl_langinfo(CODESET), "UTF-8")) return (c >= 0x20 && c <= 0x7e); else return isprint(c); } /**/ #endif /* __APPLE__ && BROKEN_ISPRINT */