/* * 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. * 4. 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. */ #ifdef __CYGWIN__ #include "winsup.h" #endif #if defined(LIBC_SCCS) && !defined(lint) static char sccsid[] = "@(#)glob.c 8.3 (Berkeley) 10/13/93"; #endif /* LIBC_SCCS and not lint */ #include __FBSDID("$FreeBSD: src/lib/libc/gen/glob.c,v 1.28 2010/05/12 17:44:00 gordon Exp $"); /* * glob(3) -- a superset of the one defined in POSIX 1003.2. * * The [!...] convention to negate a range is supported (SysV, Posix, ksh). * * Optional extra services, controlled by flags not defined by POSIX: * * GLOB_QUOTE: * Escaping convention: \ inhibits any special meaning the following * character might have (except \ at end of string is retained). * GLOB_MAGCHAR: * Set in gl_flags if pattern contained a globbing character. * GLOB_NOMAGIC: * Same as GLOB_NOCHECK, but it will only append pattern if it did * not contain any magic characters. [Used in csh style globbing] * GLOB_ALTDIRFUNC: * Use alternately specified directory access functions. * GLOB_TILDE: * expand ~user/foo to the /home/dir/of/user/foo * GLOB_BRACE: * expand {1,2}{a,b} to 1a 1b 2a 2b * gl_matchc: * Number of matches in the current invocation of glob. */ /* * Some notes on multibyte character support: * 1. Patterns with illegal byte sequences match nothing - even if * GLOB_NOCHECK is specified. * 2. Illegal byte sequences in filenames are handled by treating them as * single-byte characters with a value of the first byte of the sequence * cast to wchar_t. * 3. State-dependent encodings are not currently supported. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "collate.h" #ifdef __CYGWIN__ #include #include "path.h" #include "fhandler.h" #include "dtable.h" #include "cygheap.h" #include "cygwin/version.h" #define CCHAR(c) (ignore_case_with_glob ? towlower (CHAR (c)) : CHAR (c)) #define Cchar(c) (ignore_case_with_glob ? towlower (c) : (c)) #endif #undef MAXPATHLEN #define MAXPATHLEN 8192 #define DOLLAR '$' #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 0x8000000000ULL #define M_PROTECT 0x4000000000ULL #define M_MASK 0xffffffffffULL #define M_CHAR 0x00ffffffffULL typedef uint_fast64_t Char; #else #define M_QUOTE 0x80 #define M_PROTECT 0x40 #define M_MASK 0xff #define M_CHAR 0x7f typedef char Char; #endif #define CHAR(c) ((Char)((c)&M_CHAR)) #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 *, size_t); static int g_lstat(Char *, struct stat *, glob_t *); static DIR *g_opendir(Char *, glob_t *); static const Char *g_strchr(const Char *, wchar_t); #ifdef notdef static Char *g_strcat(Char *, const Char *); #endif static int g_stat(Char *, struct stat *, glob_t *); static int glob0(const Char *, glob_t *, size_t *); static int glob1(Char *, glob_t *, size_t *); static int glob2(Char *, Char *, Char *, Char *, glob_t *, size_t *); static int glob3(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 *, size_t *); static int globexp2(const Char *, const Char *, glob_t *, int *, size_t *); static int match(Char *, Char *, Char *); #ifdef DEBUG static void qprintf(const char *, Char *); #endif int glob(const char *__restrict pattern, int flags, int (*errfunc)(const char *, int), glob_t *__restrict pglob) { const char *patnext; size_t limit; Char *bufnext, *bufend, patbuf[MAXPATHLEN], prot; mbstate_t mbs; wchar_t wc; size_t clen; patnext = pattern; if (!(flags & GLOB_APPEND)) { pglob->gl_pathc = 0; pglob->gl_pathv = NULL; if (!(flags & GLOB_DOOFFS)) pglob->gl_offs = 0; } if (flags & GLOB_LIMIT) { limit = pglob->gl_matchc; if (limit == 0) limit = ARG_MAX; } else limit = 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) { memset(&mbs, 0, sizeof(mbs)); while (bufend - bufnext >= MB_CUR_MAX) { clen = mbrtowc(&wc, patnext, MB_LEN_MAX, &mbs); if (clen == (size_t)-1 || clen == (size_t)-2) return (GLOB_NOMATCH); else if (clen == 0) break; *bufnext++ = wc; patnext += clen; } } else { /* Protect the quoted characters. */ memset(&mbs, 0, sizeof(mbs)); while (bufend - bufnext >= MB_CUR_MAX) { if (*patnext == QUOTE) { if (*++patnext == EOS) { *bufnext++ = QUOTE | M_PROTECT; continue; } prot = M_PROTECT; } else prot = 0; clen = mbrtowc(&wc, patnext, MB_LEN_MAX, &mbs); if (clen == (size_t)-1 || clen == (size_t)-2) return (GLOB_NOMATCH); else if (clen == 0) break; *bufnext++ = wc | prot; patnext += clen; } } *bufnext = EOS; if (flags & GLOB_BRACE) return globexp1(patbuf, pglob, &limit); else return glob0(patbuf, pglob, &limit); } /* * 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, size_t *limit) { 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, limit); while ((ptr = g_strchr(ptr, LBRACE)) != NULL) if (!globexp2(ptr, pattern, pglob, &rv, limit)) return rv; return glob0(pattern, pglob, limit); } /* * 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, size_t *limit) { int i; Char *lm, *ls; const Char *pe, *pm, *pm1, *pl; Char patbuf[MAXPATHLEN]; /* copy part up to the brace */ for (lm = patbuf, pm = pattern; pm != ptr; *lm++ = *pm++) continue; *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++) continue; 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, limit); return 0; } for (i = 0, pl = pm = ptr; pm <= pe; pm++) switch (*pm) { case LBRACKET: /* Ignore everything between [] */ for (pm1 = pm++; *pm != RBRACKET && *pm != EOS; pm++) continue; if (*pm == EOS) { /* * We could not find a matching RBRACKET. * Ignore and just look for RBRACE */ pm = pm1; } 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++) continue; /* * Append the rest of the pattern after the * closing brace */ for (pl = pe + 1; (*lm++ = *pl++) != EOS;) continue; /* Expand the current pattern */ #ifdef DEBUG qprintf("globexp2:", patbuf); #endif *rv = globexp1(patbuf, pglob, limit); /* 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++) continue; *h = EOS; if (((char *) patbuf)[0] == EOS) { /* * handle a plain ~ or ~/ by expanding $HOME first (iff * we're not running setuid or setgid) and then trying * the password file */ if (issetugid() != 0 || (h = getenv("HOME")) == NULL) { if (((h = getlogin()) != NULL && (pwd = getpwnam(h)) != NULL) || (pwd = getpwuid(getuid())) != NULL) h = pwd->pw_dir; else return pattern; } } 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++) continue; /* Append the rest of the pattern */ while (b < eb && (*b++ = *p++) != EOS) continue; *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. */ static int glob0(const Char *pattern, glob_t *pglob, size_t *limit) { const Char *qpatnext; int err; size_t oldpathc; Char *bufnext, c, patbuf[MAXPATHLEN]; 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, 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 **)p, *(char **)q)); } static int glob1(Char *pattern, glob_t *pglob, size_t *limit) { Char pathbuf[MAXPATHLEN]; /* A null pathname is invalid -- POSIX 1003.1 sect. 2.4. */ if (*pattern == EOS) return(0); return(glob2(pathbuf, pathbuf, pathbuf + MAXPATHLEN - 1, pattern, pglob, limit)); } /* * 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 *pathend, Char *pathend_last, Char *pattern, glob_t *pglob, size_t *limit) { 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 (GLOB_ABORTED); *pathend++ = SEP; *pathend = EOS; } ++pglob->gl_matchc; return(globextend(pathbuf, pglob, limit)); } /* 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 (GLOB_ABORTED); *q++ = *p++; } if (!anymeta) { /* No expansion, do next segment. */ pathend = q; pattern = p; while (*pattern == SEP) { if (pathend + 1 > pathend_last) return (GLOB_ABORTED); *pathend++ = *pattern++; } } else /* Need expansion, recurse. */ return(glob3(pathbuf, pathend, pathend_last, pattern, p, pglob, limit)); } /* NOTREACHED */ } static int glob3(Char *pathbuf, Char *pathend, Char *pathend_last, Char *pattern, Char *restpattern, glob_t *pglob, size_t *limit) { 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. * CYGWIN: Needs prototype and subsequently wild casting to avoid * compiler error. */ struct dirent *(*readdirfunc)(void *); if (pathend > pathend_last) return (GLOB_ABORTED); *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 = (dirent*(*)(void*)) readdir; while ((dp = (*readdirfunc)(dirp))) { char *sc; Char *dc; wchar_t wc; size_t clen; mbstate_t mbs; /* Initial DOT must be matched literally. */ if (dp->d_name[0] == DOT && *pattern != DOT) continue; memset(&mbs, 0, sizeof(mbs)); dc = pathend; sc = dp->d_name; while (dc < pathend_last) { clen = mbrtowc(&wc, sc, MB_LEN_MAX, &mbs); if (clen == (size_t)-1 || clen == (size_t)-2) { wc = *sc; clen = 1; memset(&mbs, 0, sizeof(mbs)); } if ((*dc++ = wc) == EOS) break; sc += clen; } if (!match(pathend, pattern, restpattern)) { *pathend = EOS; continue; } err = glob2(pathbuf, --dc, pathend_last, restpattern, pglob, limit); 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 accomodate 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 *limit) { char **pathv; size_t i, newsize, len; char *copy; const Char *p; if (*limit && pglob->gl_pathc > *limit) { errno = 0; return (GLOB_NOSPACE); } newsize = sizeof(*pathv) * (2 + pglob->gl_pathc + pglob->gl_offs); pathv = pglob->gl_pathv ? (char **) realloc((char *)pglob->gl_pathv, newsize) : (char **) 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 + 1; --i > 0; ) *--pathv = NULL; } pglob->gl_pathv = pathv; for (p = path; *p++;) continue; len = MB_CUR_MAX * (size_t)(p - path); /* XXX overallocation */ if ((copy = (char *) 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; 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 (__collate_load_error ? CCHAR(c) <= CCHAR(k) && CCHAR(k) <= CCHAR(pat[1]) : __collate_range_cmp(CCHAR(c), CCHAR(k)) <= 0 && __collate_range_cmp(CCHAR(k), CCHAR(pat[1])) <= 0 ) ok = 1; pat += 2; } else if (c == k) ok = 1; if (ok == negate_range) return(0); break; default: if (Cchar(*name++) != Cchar(c)) return(0); break; } } return(*name == EOS); } /* Free allocated data belonging to a glob_t structure. */ void globfree(glob_t *pglob) { size_t 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) strcpy(buf, "."); else { if (g_Ctoc(str, buf, sizeof(buf))) return (NULL); } if (pglob->gl_flags & GLOB_ALTDIRFUNC) return (DIR *) ((*pglob->gl_opendir)((const char *) buf)); return(opendir(buf)); } #define CYGWIN_gl_stat(sfptr) ((*pglob->sfptr) (buf, sb)) static int g_lstat(Char *fn, struct stat *sb, glob_t *pglob) { char buf[MAXPATHLEN]; if (g_Ctoc(fn, buf, sizeof(buf))) { errno = ENAMETOOLONG; return (-1); } if (pglob->gl_flags & GLOB_ALTDIRFUNC) return CYGWIN_gl_stat (gl_lstat); 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))) { errno = ENAMETOOLONG; return (-1); } if (pglob->gl_flags & GLOB_ALTDIRFUNC) return CYGWIN_gl_stat (gl_stat); return(stat(buf, sb)); } static const Char * g_strchr(const Char *str, wchar_t ch) { do { if (*str == ch) return (str); } while (*str++); return (NULL); } static int g_Ctoc(const Char *str, char *buf, size_t len) { mbstate_t mbs; size_t clen; memset(&mbs, 0, sizeof(mbs)); while (len >= (size_t) MB_CUR_MAX) { clen = wcrtomb(buf, *str, &mbs); if (clen == (size_t)-1) return (1); if (*str == L'\0') return (0); str++; buf += clen; len -= clen; } 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