root/win32/glob.c

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DEFINITIONS

This source file includes following definitions.
  1. glob
  2. globexp1
  3. globexp2
  4. globtilde
  5. glob0
  6. compare
  7. glob1
  8. glob2
  9. glob3
  10. globextend
  11. match
  12. globfree
  13. g_opendir
  14. g_lstat
  15. g_stat
  16. g_strchr
  17. g_Ctoc
  18. qprintf

/*
 * 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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 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.
 */

/* $Id$ */

/*
 * 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 PHP_WIN32
#define _POSIX_
#include <limits.h>
#undef _POSIX_
#ifndef S_ISDIR
#define S_ISDIR(m) (((m) & _S_IFDIR) == _S_IFDIR)
#endif
#ifndef S_ISLNK
#define S_ISLNK(m) (0)
#endif
#endif

#include "php.h"
#include <sys/stat.h>

#include <ctype.h>
#ifndef PHP_WIN32
#include <sys/param.h>
#include <dirent.h>
#include <pwd.h>
#include <unistd.h>
#endif
#include <errno.h>
#include "glob.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define DOLLAR          '$'
#define DOT             '.'
#define EOS             '\0'
#define LBRACKET        '['
#define NOT             '!'
#define QUESTION        '?'
#define QUOTE           '\\'
#define RANGE           '-'
#define RBRACKET        ']'
#define SEP             DEFAULT_SLASH
#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 Char     *g_strchr(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

PHPAPI int
glob(pattern, flags, errfunc, pglob)
        const char *pattern;
        int flags, (*errfunc)(const char *, int);
        glob_t *pglob;
{
        const u_char *patnext;
        int c;
        Char *bufnext, *bufend, patbuf[MAXPATHLEN];

#ifdef PHP_WIN32
        /* Force skipping escape sequences on windows
         * due to the ambiguity with path backslashes
         */
        flags |= GLOB_NOESCAPE;
#endif

        patnext = (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(pattern, pglob)
        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 = (const Char *) g_strchr((Char *) 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(ptr, pattern, pglob, rv)
        const Char *ptr, *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(pattern, patbuf, patbuf_len, pglob)
        const Char *pattern;
        Char *patbuf;
        size_t patbuf_len;
        glob_t *pglob;
{
#ifndef PHP_WIN32
        struct passwd *pwd;
#endif
        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++ = (char) *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 ((h = getenv("HOME")) == NULL) {
#ifndef PHP_WIN32
                        if ((pwd = getpwuid(getuid())) == NULL)
                                return pattern;
                        else
                                h = pwd->pw_dir;
#else
                        return pattern;
#endif
                }
        } else {
                /*
                 * Expand a ~user
                 */
#ifndef PHP_WIN32
                if ((pwd = getpwnam((char*) patbuf)) == NULL)
                        return pattern;
                else
                        h = pwd->pw_dir;
#else
                return pattern;
#endif
        }

        /* 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(pattern, pglob)
        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((Char *) 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 **)p, *(char **)q));
}

static int
glob1(pattern, pattern_last, pglob, limitp)
        Char *pattern, *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(pathbuf, pathbuf_last, pathend, pathend_last, pattern,
                pattern_last, pglob, limitp)
        Char *pathbuf, *pathbuf_last, *pathend, *pathend_last;
        Char *pattern, *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) &&
                                !IS_SLASH(pathend[-1])) && (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 && !IS_SLASH(*p)) {
                        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 (IS_SLASH(*pattern)) {
                                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(pathbuf, pathbuf_last, pathend, pathend_last, pattern, pattern_last,
        restpattern, restpattern_last, pglob, limitp)
        Char *pathbuf, *pathbuf_last, *pathend, *pathend_last;
        Char *pattern, *pattern_last, *restpattern, *restpattern_last;
        glob_t *pglob;
        size_t *limitp;
{
        register 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)();

        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 = readdir;
        while ((dp = (*readdirfunc)(dirp))) {
                register u_char *sc;
                register 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(path, pglob, limitp)
        const Char *path;
        glob_t *pglob;
        size_t *limitp;
{
        register char **pathv;
        register 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(name, pat, patend)
        register Char *name, *pat, *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. */
PHPAPI void
globfree(pglob)
        glob_t *pglob;
{
        register int i;
        register 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(str, pglob)
        register 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(fn, sb, pglob)
        register 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(php_sys_lstat(buf, sb));
}

static int
g_stat(fn, sb, pglob)
        register 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(php_sys_stat(buf, sb));
}

static Char *
g_strchr(str, ch)
        Char *str;
        int ch;
{
        do {
                if (*str == ch)
                        return (str);
        } while (*str++);
        return (NULL);
}

static int
g_Ctoc(str, buf, len)
        register const Char *str;
        char *buf;
        u_int len;
{

        while (len--) {
                if ((*buf++ = (char) *str++) == EOS)
                        return (0);
        }
        return (1);
}

#ifdef DEBUG
static void
qprintf(str, s)
        const char *str;
        register Char *s;
{
        register 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

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