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Diffstat (limited to 'config/glob.c')
| -rw-r--r-- | config/glob.c | 848 |
1 files changed, 0 insertions, 848 deletions
diff --git a/config/glob.c b/config/glob.c deleted file mode 100644 index b8928b1b6..000000000 --- a/config/glob.c +++ /dev/null @@ -1,848 +0,0 @@ -/* $OpenBSD: glob.c,v 1.25 2005/08/08 08:05:34 espie Exp $ */ -/* - * Copyright (c) 1989, 1993 - * The Regents of the University of California. All rights reserved. - * - * This code is derived from software contributed to Berkeley by - * Guido van Rossum. - * - * 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. - */ - -/* - * glob(3) -- a superset of the one defined in POSIX 1003.2. - * - * The [!...] convention to negate a range is supported (SysV, Posix, ksh). - * - * Optional extra services, controlled by flags not defined by POSIX: - * - * GLOB_QUOTE: - * Escaping convention: \ inhibits any special meaning the following - * character might have (except \ at end of string is retained). - * GLOB_MAGCHAR: - * Set in gl_flags if pattern contained a globbing character. - * GLOB_NOMAGIC: - * Same as GLOB_NOCHECK, but it will only append pattern if it did - * not contain any magic characters. [Used in csh style globbing] - * GLOB_ALTDIRFUNC: - * Use alternately specified directory access functions. - * GLOB_TILDE: - * expand ~user/foo to the /home/dir/of/user/foo - * GLOB_BRACE: - * expand {1,2}{a,b} to 1a 1b 2a 2b - * gl_matchc: - * Number of matches in the current invocation of glob. - */ - -#ifdef __APPLE__ -#include <sys/param.h> -#include <sys/stat.h> - -#include <ctype.h> -#include <dirent.h> -#include <errno.h> -#include <glob.h> -#include <pwd.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> - -#define DOLLAR '$' -#define DOT '.' -#define EOS '\0' -#define LBRACKET '[' -#define NOT '!' -#define QUESTION '?' -#define QUOTE '\\' -#define RANGE '-' -#define RBRACKET ']' -#define SEP '/' -#define STAR '*' -#define TILDE '~' -#define UNDERSCORE '_' -#define LBRACE '{' -#define RBRACE '}' -#define SLASH '/' -#define COMMA ',' - -#ifndef DEBUG - -#define M_QUOTE 0x8000 -#define M_PROTECT 0x4000 -#define M_MASK 0xffff -#define M_ASCII 0x00ff - -typedef u_short Char; - -#else - -#define M_QUOTE 0x80 -#define M_PROTECT 0x40 -#define M_MASK 0xff -#define M_ASCII 0x7f - -typedef char Char; - -#endif - - -#define CHAR(c) ((Char)((c)&M_ASCII)) -#define META(c) ((Char)((c)|M_QUOTE)) -#define M_ALL META('*') -#define M_END META(']') -#define M_NOT META('!') -#define M_ONE META('?') -#define M_RNG META('-') -#define M_SET META('[') -#define ismeta(c) (((c)&M_QUOTE) != 0) - - -static int compare(const void *, const void *); -static int g_Ctoc(const Char *, char *, u_int); -static int g_lstat(Char *, struct stat *, glob_t *); -static DIR *g_opendir(Char *, glob_t *); -static const Char *g_strchr(const Char *, int); -static int g_stat(Char *, struct stat *, glob_t *); -static int glob0(const Char *, glob_t *); -static int glob1(Char *, Char *, glob_t *, size_t *); -static int glob2(Char *, Char *, Char *, Char *, Char *, Char *, - glob_t *, size_t *); -static int glob3(Char *, Char *, Char *, Char *, Char *, Char *, - Char *, Char *, glob_t *, size_t *); -static int globextend(const Char *, glob_t *, size_t *); -static const Char * - globtilde(const Char *, Char *, size_t, glob_t *); -static int globexp1(const Char *, glob_t *); -static int globexp2(const Char *, const Char *, glob_t *, int *); -static int match(Char *, Char *, Char *); -#ifdef DEBUG -static void qprintf(const char *, Char *); -#endif - -int -glob(const char *pattern, int flags, int (*errfunc)(const char *, int), - glob_t *pglob) -{ - const u_char *patnext; - int c; - Char *bufnext, *bufend, patbuf[MAXPATHLEN]; - - patnext = (const u_char *) pattern; - if (!(flags & GLOB_APPEND)) { - pglob->gl_pathc = 0; - pglob->gl_pathv = NULL; - if (!(flags & GLOB_DOOFFS)) - pglob->gl_offs = 0; - } - pglob->gl_flags = flags & ~GLOB_MAGCHAR; - pglob->gl_errfunc = errfunc; - pglob->gl_matchc = 0; - - bufnext = patbuf; - bufend = bufnext + MAXPATHLEN - 1; - if (flags & GLOB_NOESCAPE) - while (bufnext < bufend && (c = *patnext++) != EOS) - *bufnext++ = c; - else { - /* Protect the quoted characters. */ - while (bufnext < bufend && (c = *patnext++) != EOS) - if (c == QUOTE) { - if ((c = *patnext++) == EOS) { - c = QUOTE; - --patnext; - } - *bufnext++ = c | M_PROTECT; - } else - *bufnext++ = c; - } - *bufnext = EOS; - - if (flags & GLOB_BRACE) - return globexp1(patbuf, pglob); - else - return glob0(patbuf, pglob); -} - -/* - * Expand recursively a glob {} pattern. When there is no more expansion - * invoke the standard globbing routine to glob the rest of the magic - * characters - */ -static int -globexp1(const Char *pattern, glob_t *pglob) -{ - const Char* ptr = pattern; - int rv; - - /* Protect a single {}, for find(1), like csh */ - if (pattern[0] == LBRACE && pattern[1] == RBRACE && pattern[2] == EOS) - return glob0(pattern, pglob); - - while ((ptr = g_strchr(ptr, LBRACE)) != NULL) - if (!globexp2(ptr, pattern, pglob, &rv)) - return rv; - - return glob0(pattern, pglob); -} - - -/* - * Recursive brace globbing helper. Tries to expand a single brace. - * If it succeeds then it invokes globexp1 with the new pattern. - * If it fails then it tries to glob the rest of the pattern and returns. - */ -static int -globexp2(const Char *ptr, const Char *pattern, glob_t *pglob, int *rv) -{ - int i; - Char *lm, *ls; - const Char *pe, *pm, *pl; - Char patbuf[MAXPATHLEN]; - - /* copy part up to the brace */ - for (lm = patbuf, pm = pattern; pm != ptr; *lm++ = *pm++) - ; - *lm = EOS; - ls = lm; - - /* Find the balanced brace */ - for (i = 0, pe = ++ptr; *pe; pe++) - if (*pe == LBRACKET) { - /* Ignore everything between [] */ - for (pm = pe++; *pe != RBRACKET && *pe != EOS; pe++) - ; - if (*pe == EOS) { - /* - * We could not find a matching RBRACKET. - * Ignore and just look for RBRACE - */ - pe = pm; - } - } else if (*pe == LBRACE) - i++; - else if (*pe == RBRACE) { - if (i == 0) - break; - i--; - } - - /* Non matching braces; just glob the pattern */ - if (i != 0 || *pe == EOS) { - *rv = glob0(patbuf, pglob); - return 0; - } - - for (i = 0, pl = pm = ptr; pm <= pe; pm++) { - switch (*pm) { - case LBRACKET: - /* Ignore everything between [] */ - for (pl = pm++; *pm != RBRACKET && *pm != EOS; pm++) - ; - if (*pm == EOS) { - /* - * We could not find a matching RBRACKET. - * Ignore and just look for RBRACE - */ - pm = pl; - } - break; - - case LBRACE: - i++; - break; - - case RBRACE: - if (i) { - i--; - break; - } - /* FALLTHROUGH */ - case COMMA: - if (i && *pm == COMMA) - break; - else { - /* Append the current string */ - for (lm = ls; (pl < pm); *lm++ = *pl++) - ; - - /* - * Append the rest of the pattern after the - * closing brace - */ - for (pl = pe + 1; (*lm++ = *pl++) != EOS; ) - ; - - /* Expand the current pattern */ -#ifdef DEBUG - qprintf("globexp2:", patbuf); -#endif - *rv = globexp1(patbuf, pglob); - - /* move after the comma, to the next string */ - pl = pm + 1; - } - break; - - default: - break; - } - } - *rv = 0; - return 0; -} - - - -/* - * expand tilde from the passwd file. - */ -static const Char * -globtilde(const Char *pattern, Char *patbuf, size_t patbuf_len, glob_t *pglob) -{ - struct passwd *pwd; - char *h; - const Char *p; - Char *b, *eb; - - if (*pattern != TILDE || !(pglob->gl_flags & GLOB_TILDE)) - return pattern; - - /* Copy up to the end of the string or / */ - eb = &patbuf[patbuf_len - 1]; - for (p = pattern + 1, h = (char *) patbuf; - h < (char *)eb && *p && *p != SLASH; *h++ = *p++) - ; - - *h = EOS; - -#if 0 - if (h == (char *)eb) - return what; -#endif - - if (((char *) patbuf)[0] == EOS) { - /* - * handle a plain ~ or ~/ by expanding $HOME - * first and then trying the password file - */ - if (issetugid() != 0 || (h = getenv("HOME")) == NULL) { - if ((pwd = getpwuid(getuid())) == NULL) - return pattern; - else - h = pwd->pw_dir; - } - } else { - /* - * Expand a ~user - */ - if ((pwd = getpwnam((char*) patbuf)) == NULL) - return pattern; - else - h = pwd->pw_dir; - } - - /* Copy the home directory */ - for (b = patbuf; b < eb && *h; *b++ = *h++) - ; - - /* Append the rest of the pattern */ - while (b < eb && (*b++ = *p++) != EOS) - ; - *b = EOS; - - return patbuf; -} - - -/* - * The main glob() routine: compiles the pattern (optionally processing - * quotes), calls glob1() to do the real pattern matching, and finally - * sorts the list (unless unsorted operation is requested). Returns 0 - * if things went well, nonzero if errors occurred. It is not an error - * to find no matches. - */ -static int -glob0(const Char *pattern, glob_t *pglob) -{ - const Char *qpatnext; - int c, err, oldpathc; - Char *bufnext, patbuf[MAXPATHLEN]; - size_t limit = 0; - - qpatnext = globtilde(pattern, patbuf, MAXPATHLEN, pglob); - oldpathc = pglob->gl_pathc; - bufnext = patbuf; - - /* We don't need to check for buffer overflow any more. */ - while ((c = *qpatnext++) != EOS) { - switch (c) { - case LBRACKET: - c = *qpatnext; - if (c == NOT) - ++qpatnext; - if (*qpatnext == EOS || - g_strchr(qpatnext+1, RBRACKET) == NULL) { - *bufnext++ = LBRACKET; - if (c == NOT) - --qpatnext; - break; - } - *bufnext++ = M_SET; - if (c == NOT) - *bufnext++ = M_NOT; - c = *qpatnext++; - do { - *bufnext++ = CHAR(c); - if (*qpatnext == RANGE && - (c = qpatnext[1]) != RBRACKET) { - *bufnext++ = M_RNG; - *bufnext++ = CHAR(c); - qpatnext += 2; - } - } while ((c = *qpatnext++) != RBRACKET); - pglob->gl_flags |= GLOB_MAGCHAR; - *bufnext++ = M_END; - break; - case QUESTION: - pglob->gl_flags |= GLOB_MAGCHAR; - *bufnext++ = M_ONE; - break; - case STAR: - pglob->gl_flags |= GLOB_MAGCHAR; - /* collapse adjacent stars to one, - * to avoid exponential behavior - */ - if (bufnext == patbuf || bufnext[-1] != M_ALL) - *bufnext++ = M_ALL; - break; - default: - *bufnext++ = CHAR(c); - break; - } - } - *bufnext = EOS; -#ifdef DEBUG - qprintf("glob0:", patbuf); -#endif - - if ((err = glob1(patbuf, patbuf+MAXPATHLEN-1, pglob, &limit)) != 0) - return(err); - - /* - * If there was no match we are going to append the pattern - * if GLOB_NOCHECK was specified or if GLOB_NOMAGIC was specified - * and the pattern did not contain any magic characters - * GLOB_NOMAGIC is there just for compatibility with csh. - */ - if (pglob->gl_pathc == oldpathc) { - if ((pglob->gl_flags & GLOB_NOCHECK) || - ((pglob->gl_flags & GLOB_NOMAGIC) && - !(pglob->gl_flags & GLOB_MAGCHAR))) - return(globextend(pattern, pglob, &limit)); - else - return(GLOB_NOMATCH); - } - if (!(pglob->gl_flags & GLOB_NOSORT)) - qsort(pglob->gl_pathv + pglob->gl_offs + oldpathc, - pglob->gl_pathc - oldpathc, sizeof(char *), compare); - return(0); -} - -static int -compare(const void *p, const void *q) -{ - return(strcmp(*(char *const *)p, *(char *const *)q)); -} - -static int -glob1(Char *pattern, Char *pattern_last, glob_t *pglob, size_t *limitp) -{ - Char pathbuf[MAXPATHLEN]; - - /* A null pathname is invalid -- POSIX 1003.1 sect. 2.4. */ - if (*pattern == EOS) - return(0); - return(glob2(pathbuf, pathbuf+MAXPATHLEN-1, - pathbuf, pathbuf+MAXPATHLEN-1, - pattern, pattern_last, pglob, limitp)); -} - -/* - * The functions glob2 and glob3 are mutually recursive; there is one level - * of recursion for each segment in the pattern that contains one or more - * meta characters. - */ -static int -glob2(Char *pathbuf, Char *pathbuf_last, Char *pathend, Char *pathend_last, - Char *pattern, Char *pattern_last, glob_t *pglob, size_t *limitp) -{ - struct stat sb; - Char *p, *q; - int anymeta; - - /* - * Loop over pattern segments until end of pattern or until - * segment with meta character found. - */ - for (anymeta = 0;;) { - if (*pattern == EOS) { /* End of pattern? */ - *pathend = EOS; - if (g_lstat(pathbuf, &sb, pglob)) - return(0); - - if (((pglob->gl_flags & GLOB_MARK) && - pathend[-1] != SEP) && (S_ISDIR(sb.st_mode) || - (S_ISLNK(sb.st_mode) && - (g_stat(pathbuf, &sb, pglob) == 0) && - S_ISDIR(sb.st_mode)))) { - if (pathend+1 > pathend_last) - return (1); - *pathend++ = SEP; - *pathend = EOS; - } - ++pglob->gl_matchc; - return(globextend(pathbuf, pglob, limitp)); - } - - /* Find end of next segment, copy tentatively to pathend. */ - q = pathend; - p = pattern; - while (*p != EOS && *p != SEP) { - if (ismeta(*p)) - anymeta = 1; - if (q+1 > pathend_last) - return (1); - *q++ = *p++; - } - - if (!anymeta) { /* No expansion, do next segment. */ - pathend = q; - pattern = p; - while (*pattern == SEP) { - if (pathend+1 > pathend_last) - return (1); - *pathend++ = *pattern++; - } - } else - /* Need expansion, recurse. */ - return(glob3(pathbuf, pathbuf_last, pathend, - pathend_last, pattern, pattern_last, - p, pattern_last, pglob, limitp)); - } - /* NOTREACHED */ -} - -static int -glob3(Char *pathbuf, Char *pathbuf_last, Char *pathend, Char *pathend_last, - Char *pattern, Char *pattern_last __attribute__((unused)), Char *restpattern, - Char *restpattern_last, glob_t *pglob, size_t *limitp) -{ - struct dirent *dp; - DIR *dirp; - int err; - char buf[MAXPATHLEN]; - - /* - * The readdirfunc declaration can't be prototyped, because it is - * assigned, below, to two functions which are prototyped in glob.h - * and dirent.h as taking pointers to differently typed opaque - * structures. - */ - struct dirent *(*readdirfunc)(void *); - - if (pathend > pathend_last) - return (1); - *pathend = EOS; - errno = 0; - - if ((dirp = g_opendir(pathbuf, pglob)) == NULL) { - /* TODO: don't call for ENOENT or ENOTDIR? */ - if (pglob->gl_errfunc) { - if (g_Ctoc(pathbuf, buf, sizeof(buf))) - return(GLOB_ABORTED); - if (pglob->gl_errfunc(buf, errno) || - pglob->gl_flags & GLOB_ERR) - return(GLOB_ABORTED); - } - return(0); - } - - err = 0; - - /* Search directory for matching names. */ - if (pglob->gl_flags & GLOB_ALTDIRFUNC) - readdirfunc = pglob->gl_readdir; - else - readdirfunc = (struct dirent *(*)(void *))readdir; - while ((dp = (*readdirfunc)(dirp))) { - u_char *sc; - Char *dc; - - /* Initial DOT must be matched literally. */ - if (dp->d_name[0] == DOT && *pattern != DOT) - continue; - dc = pathend; - sc = (u_char *) dp->d_name; - while (dc < pathend_last && (*dc++ = *sc++) != EOS) - ; - if (dc >= pathend_last) { - *dc = EOS; - err = 1; - break; - } - - if (!match(pathend, pattern, restpattern)) { - *pathend = EOS; - continue; - } - err = glob2(pathbuf, pathbuf_last, --dc, pathend_last, - restpattern, restpattern_last, pglob, limitp); - if (err) - break; - } - - if (pglob->gl_flags & GLOB_ALTDIRFUNC) - (*pglob->gl_closedir)(dirp); - else - closedir(dirp); - return(err); -} - - -/* - * Extend the gl_pathv member of a glob_t structure to accommodate a new item, - * add the new item, and update gl_pathc. - * - * This assumes the BSD realloc, which only copies the block when its size - * crosses a power-of-two boundary; for v7 realloc, this would cause quadratic - * behavior. - * - * Return 0 if new item added, error code if memory couldn't be allocated. - * - * Invariant of the glob_t structure: - * Either gl_pathc is zero and gl_pathv is NULL; or gl_pathc > 0 and - * gl_pathv points to (gl_offs + gl_pathc + 1) items. - */ -static int -globextend(const Char *path, glob_t *pglob, size_t *limitp) -{ - char **pathv; - int i; - u_int newsize, len; - char *copy; - const Char *p; - - newsize = sizeof(*pathv) * (2 + pglob->gl_pathc + pglob->gl_offs); - pathv = pglob->gl_pathv ? realloc((char *)pglob->gl_pathv, newsize) : - malloc(newsize); - if (pathv == NULL) { - if (pglob->gl_pathv) { - free(pglob->gl_pathv); - pglob->gl_pathv = NULL; - } - return(GLOB_NOSPACE); - } - - if (pglob->gl_pathv == NULL && pglob->gl_offs > 0) { - /* first time around -- clear initial gl_offs items */ - pathv += pglob->gl_offs; - for (i = pglob->gl_offs; --i >= 0; ) - *--pathv = NULL; - } - pglob->gl_pathv = pathv; - - for (p = path; *p++;) - ; - len = (size_t)(p - path); - *limitp += len; - if ((copy = malloc(len)) != NULL) { - if (g_Ctoc(path, copy, len)) { - free(copy); - return(GLOB_NOSPACE); - } - pathv[pglob->gl_offs + pglob->gl_pathc++] = copy; - } - pathv[pglob->gl_offs + pglob->gl_pathc] = NULL; - - if ((pglob->gl_flags & GLOB_LIMIT) && - newsize + *limitp >= ARG_MAX) { - errno = 0; - return(GLOB_NOSPACE); - } - - return(copy == NULL ? GLOB_NOSPACE : 0); -} - - -/* - * pattern matching function for filenames. Each occurrence of the * - * pattern causes a recursion level. - */ -static int -match(Char *name, Char *pat, Char *patend) -{ - int ok, negate_range; - Char c, k; - - while (pat < patend) { - c = *pat++; - switch (c & M_MASK) { - case M_ALL: - if (pat == patend) - return(1); - do { - if (match(name, pat, patend)) - return(1); - } while (*name++ != EOS); - return(0); - case M_ONE: - if (*name++ == EOS) - return(0); - break; - case M_SET: - ok = 0; - if ((k = *name++) == EOS) - return(0); - if ((negate_range = ((*pat & M_MASK) == M_NOT)) != EOS) - ++pat; - while (((c = *pat++) & M_MASK) != M_END) - if ((*pat & M_MASK) == M_RNG) { - if (c <= k && k <= pat[1]) - ok = 1; - pat += 2; - } else if (c == k) - ok = 1; - if (ok == negate_range) - return(0); - break; - default: - if (*name++ != c) - return(0); - break; - } - } - return(*name == EOS); -} - -/* Free allocated data belonging to a glob_t structure. */ -void -globfree(glob_t *pglob) -{ - int i; - char **pp; - - if (pglob->gl_pathv != NULL) { - pp = pglob->gl_pathv + pglob->gl_offs; - for (i = pglob->gl_pathc; i--; ++pp) - if (*pp) - free(*pp); - free(pglob->gl_pathv); - pglob->gl_pathv = NULL; - } -} - -static DIR * -g_opendir(Char *str, glob_t *pglob) -{ - char buf[MAXPATHLEN]; - - if (!*str) - strlcpy(buf, ".", sizeof buf); - else { - if (g_Ctoc(str, buf, sizeof(buf))) - return(NULL); - } - - if (pglob->gl_flags & GLOB_ALTDIRFUNC) - return((*pglob->gl_opendir)(buf)); - - return(opendir(buf)); -} - -static int -g_lstat(Char *fn, struct stat *sb, glob_t *pglob) -{ - char buf[MAXPATHLEN]; - - if (g_Ctoc(fn, buf, sizeof(buf))) - return(-1); - if (pglob->gl_flags & GLOB_ALTDIRFUNC) - return((*pglob->gl_lstat)(buf, sb)); - return(lstat(buf, sb)); -} - -static int -g_stat(Char *fn, struct stat *sb, glob_t *pglob) -{ - char buf[MAXPATHLEN]; - - if (g_Ctoc(fn, buf, sizeof(buf))) - return(-1); - if (pglob->gl_flags & GLOB_ALTDIRFUNC) - return((*pglob->gl_stat)(buf, sb)); - return(stat(buf, sb)); -} - -static const Char * -g_strchr(const Char *str, int ch) -{ - do { - if (*str == ch) - return (str); - } while (*str++); - return (NULL); -} - -static int -g_Ctoc(const Char *str, char *buf, u_int len) -{ - - while (len--) { - if ((*buf++ = *str++) == EOS) - return (0); - } - return (1); -} - -#ifdef DEBUG -static void -qprintf(const char *str, Char *s) -{ - Char *p; - - (void)printf("%s:\n", str); - for (p = s; *p; p++) - (void)printf("%c", CHAR(*p)); - (void)printf("\n"); - for (p = s; *p; p++) - (void)printf("%c", *p & M_PROTECT ? '"' : ' '); - (void)printf("\n"); - for (p = s; *p; p++) - (void)printf("%c", ismeta(*p) ? '_' : ' '); - (void)printf("\n"); -} -#endif -#endif |