/* $NetBSD: glob.c,v 1.18 2006/12/01 18:57:29 christos 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. */ #include #if defined(LIBC_SCCS) && !defined(lint) #if 0 static char sccsid[] = "@(#)glob.c 8.3 (Berkeley) 10/13/93"; #else __RCSID("$NetBSD: glob.c,v 1.18 2006/12/01 18:57:29 christos Exp $"); #endif #endif /* LIBC_SCCS and not lint */ /* * glob(3) -- a superset of the one defined in POSIX 1003.2. * * The [!...] convention to negate a range is supported (SysV, Posix, ksh). * * Optional extra services, controlled by flags not defined by POSIX: * * GLOB_MAGCHAR: * Set in gl_flags if pattern contained a globbing character. * GLOB_NOMAGIC: * Same as GLOB_NOCHECK, but it will only append pattern if it did * not contain any magic characters. [Used in csh style globbing] * GLOB_ALTDIRFUNC: * Use alternately specified directory access functions. * GLOB_TILDE: * expand ~user/foo to the /home/dir/of/user/foo * GLOB_BRACE: * expand {1,2}{a,b} to 1a 1b 2a 2b * gl_matchc: * Number of matches in the current invocation of glob. */ #include "namespace.h" #include #include #include #include #include #include #include #include #include #include #include #include #ifdef HAVE_NBTOOL_CONFIG_H #define NO_GETPW_R #endif /* * XXX: For NetBSD 1.4.x compatibility. (kill me l8r) */ #ifndef _DIAGASSERT #define _DIAGASSERT(a) #endif #define DOLLAR '$' #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 USE_8BIT_CHARS #define M_QUOTE 0x8000 #define M_PROTECT 0x4000 #define M_MASK 0xffff #define M_ASCII 0x00ff typedef u_short Char; #else #define M_QUOTE (Char)0x80 #define M_PROTECT (Char)0x40 #define M_MASK (Char)0xff #define M_ASCII (Char)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 *, size_t); static int g_lstat(Char *, __gl_stat_t *, glob_t *); static DIR *g_opendir(Char *, glob_t *); static Char *g_strchr(const Char *, int); static int g_stat(Char *, __gl_stat_t *, glob_t *); static int glob0(const Char *, glob_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 *); 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+1]; _DIAGASSERT(pattern != NULL); 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; 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; _DIAGASSERT(pattern != NULL); _DIAGASSERT(pglob != NULL); /* Protect a single {}, for find(1), like csh */ if (pattern[0] == LBRACE && pattern[1] == RBRACE && pattern[2] == EOS) return glob0(pattern, pglob); while ((ptr = (const Char *) 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 + 1]; _DIAGASSERT(ptr != NULL); _DIAGASSERT(pattern != NULL); _DIAGASSERT(pglob != NULL); _DIAGASSERT(rv != NULL); /* copy part up to the brace */ for (lm = patbuf, pm = pattern; pm != ptr; *lm++ = *pm++) continue; 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) { /* * we use `pattern', not `patbuf' here so that that * unbalanced braces are passed to the match */ *rv = glob0(pattern, 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++) continue; 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++) 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); /* 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 patsize, glob_t *pglob) { struct passwd *pwd; const char *h; const Char *p; Char *b; char *d; Char *pend = &patbuf[patsize / sizeof(Char)]; #ifndef NO_GETPW_R struct passwd pwres; char pwbuf[1024]; #endif pend--; _DIAGASSERT(pattern != NULL); _DIAGASSERT(patbuf != NULL); _DIAGASSERT(pglob != NULL); if (*pattern != TILDE || !(pglob->gl_flags & GLOB_TILDE)) return pattern; /* Copy up to the end of the string or / */ for (p = pattern + 1, d = (char *)(void *)patbuf; d < (char *)(void *)pend && *p && *p != SLASH; *d++ = *p++) continue; if (d == (char *)(void *)pend) return NULL; *d = EOS; d = (char *)(void *)patbuf; if (*d == EOS) { /* * handle a plain ~ or ~/ by expanding $HOME * first and then trying the password file */ if ((h = getenv("HOME")) == NULL) { #ifdef NO_GETPW_R if ((pwd = getpwuid(getuid())) == NULL) #else if (getpwuid_r(getuid(), &pwres, pwbuf, sizeof(pwbuf), &pwd) != 0 || pwd == NULL) #endif return pattern; else h = pwd->pw_dir; } } else { /* * Expand a ~user */ #ifdef NO_GETPW_R if ((pwd = getpwnam(d)) == NULL) #else if (getpwnam_r(d, &pwres, pwbuf, sizeof(pwbuf), &pwd) != 0 || pwd == NULL) #endif return pattern; else h = pwd->pw_dir; } /* Copy the home directory */ for (b = patbuf; b < pend && *h; *b++ = *h++) continue; if (b == pend) return NULL; /* Append the rest of the pattern */ while (b < pend && (*b++ = *p++) != EOS) continue; if (b == pend) return NULL; 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, error; __gl_size_t oldpathc; Char *bufnext, patbuf[MAXPATHLEN+1]; size_t limit = 0; _DIAGASSERT(pattern != NULL); _DIAGASSERT(pglob != NULL); if ((qpatnext = globtilde(pattern, patbuf, sizeof(patbuf), pglob)) == NULL) return GLOB_ABEND; 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 ((error = glob1(patbuf, pglob, &limit)) != 0) return error; if (pglob->gl_pathc == oldpathc) { /* * 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_flags & GLOB_NOCHECK) || ((pglob->gl_flags & (GLOB_NOMAGIC|GLOB_MAGCHAR)) == GLOB_NOMAGIC)) { return globextend(pattern, pglob, &limit); } else { return GLOB_NOMATCH; } } else if (!(pglob->gl_flags & GLOB_NOSORT)) { qsort(pglob->gl_pathv + pglob->gl_offs + oldpathc, (size_t)pglob->gl_pathc - oldpathc, sizeof(char *), compare); } return 0; } static int compare(const void *p, const void *q) { _DIAGASSERT(p != NULL); _DIAGASSERT(q != NULL); return strcoll(*(const char * const *)p, *(const char * const *)q); } static int glob1(Char *pattern, glob_t *pglob, size_t *limit) { Char pathbuf[MAXPATHLEN+1]; _DIAGASSERT(pattern != NULL); _DIAGASSERT(pglob != NULL); /* A null pathname is invalid -- POSIX 1003.1 sect. 2.4. */ if (*pattern == EOS) return 0; /* * we save one character so that we can use ptr >= limit, * in the general case when we are appending non nul chars only. */ return glob2(pathbuf, pathbuf, pathbuf + (sizeof(pathbuf) / sizeof(*pathbuf)) - 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 *pathlim, Char *pattern, glob_t *pglob, size_t *limit) { __gl_stat_t sb; Char *p, *q; int anymeta; _DIAGASSERT(pathbuf != NULL); _DIAGASSERT(pathend != NULL); _DIAGASSERT(pattern != NULL); _DIAGASSERT(pglob != NULL); /* * 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 >= pathlim) 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 >= pathlim) return GLOB_ABORTED; *q++ = *p++; } if (!anymeta) { /* No expansion, do next segment. */ pathend = q; pattern = p; while (*pattern == SEP) { if (pathend >= pathlim) return GLOB_ABORTED; *pathend++ = *pattern++; } } else /* Need expansion, recurse. */ return glob3(pathbuf, pathend, pathlim, pattern, p, pglob, limit); } /* NOTREACHED */ } static int glob3(Char *pathbuf, Char *pathend, Char *pathlim, Char *pattern, Char *restpattern, glob_t *pglob, size_t *limit) { struct dirent *dp; DIR *dirp; int error; 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 *); _DIAGASSERT(pathbuf != NULL); _DIAGASSERT(pathend != NULL); _DIAGASSERT(pattern != NULL); _DIAGASSERT(restpattern != NULL); _DIAGASSERT(pglob != NULL); *pathend = EOS; errno = 0; if ((dirp = g_opendir(pathbuf, pglob)) == NULL) { 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; } /* * Posix/XOpen: glob should return when it encounters a * directory that it cannot open or read * XXX: Should we ignore ENOTDIR and ENOENT though? * I think that Posix had in mind EPERM... */ if (pglob->gl_flags & GLOB_ERR) return GLOB_ABORTED; return 0; } error = 0; /* Search directory for matching names. */ if (pglob->gl_flags & GLOB_ALTDIRFUNC) readdirfunc = pglob->gl_readdir; else readdirfunc = (struct dirent *(*)__P((void *))) readdir; while ((dp = (*readdirfunc)(dirp)) != NULL) { u_char *sc; Char *dc; /* Initial DOT must be matched literally. */ if (dp->d_name[0] == DOT && *pattern != DOT) continue; /* * The resulting string contains EOS, so we can * use the pathlim character, if it is the nul */ for (sc = (u_char *) dp->d_name, dc = pathend; dc <= pathlim && (*dc++ = *sc++) != EOS;) continue; /* * Have we filled the buffer without seeing EOS? */ if (dc > pathlim && *pathlim != EOS) { /* * Abort when requested by caller, otherwise * reset pathend back to last SEP and continue * with next dir entry. */ if (pglob->gl_flags & GLOB_ERR) { error = GLOB_ABORTED; break; } else { *pathend = EOS; continue; } } if (!match(pathend, pattern, restpattern)) { *pathend = EOS; continue; } error = glob2(pathbuf, --dc, pathlim, restpattern, pglob, limit); if (error) break; } if (pglob->gl_flags & GLOB_ALTDIRFUNC) (*pglob->gl_closedir)(dirp); else closedir(dirp); /* * Again Posix X/Open issue with regards to error handling. */ if ((error || errno) && (pglob->gl_flags & GLOB_ERR)) return GLOB_ABORTED; return error; } /* * 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 *limit) { char **pathv; size_t i, newsize, len; char *copy; const Char *p; _DIAGASSERT(path != NULL); _DIAGASSERT(pglob != NULL); newsize = sizeof(*pathv) * (2 + pglob->gl_pathc + pglob->gl_offs); pathv = pglob->gl_pathv ? realloc(pglob->gl_pathv, newsize) : malloc(newsize); if (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 = (size_t)(p - path); *limit += len; if ((copy = malloc(len)) != NULL) { if (g_Ctoc(path, copy, len)) { free(copy); return GLOB_ABORTED; } pathv[pglob->gl_offs + pglob->gl_pathc++] = copy; } pathv[pglob->gl_offs + pglob->gl_pathc] = NULL; if ((pglob->gl_flags & GLOB_LIMIT) && (newsize + *limit) >= 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; _DIAGASSERT(name != NULL); _DIAGASSERT(pat != NULL); _DIAGASSERT(patend != NULL); 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) { size_t i; char **pp; _DIAGASSERT(pglob != NULL); 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; pglob->gl_pathc = 0; } } static DIR * g_opendir(Char *str, glob_t *pglob) { char buf[MAXPATHLEN]; _DIAGASSERT(str != NULL); _DIAGASSERT(pglob != NULL); if (!*str) (void)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, __gl_stat_t *sb, glob_t *pglob) { char buf[MAXPATHLEN]; _DIAGASSERT(fn != NULL); _DIAGASSERT(sb != NULL); _DIAGASSERT(pglob != NULL); 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, __gl_stat_t *sb, glob_t *pglob) { char buf[MAXPATHLEN]; _DIAGASSERT(fn != NULL); _DIAGASSERT(sb != NULL); _DIAGASSERT(pglob != NULL); 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 Char * g_strchr(const Char *str, int ch) { _DIAGASSERT(str != NULL); do { if (*str == ch) return __UNCONST(str); } while (*str++); return NULL; } static int g_Ctoc(const Char *str, char *buf, size_t len) { char *dc; _DIAGASSERT(str != NULL); _DIAGASSERT(buf != NULL); if (len == 0) return 1; for (dc = buf; len && (*dc++ = *str++) != EOS; len--) continue; return len == 0; } #ifdef DEBUG static void qprintf(const char *str, Char *s) { Char *p; _DIAGASSERT(str != NULL); _DIAGASSERT(s != NULL); (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