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Annotation of 43BSDTahoe/new/nntp/server/scandir.c, revision 1.1

1.1     ! root        1: #ifndef lint
        !             2: static char    *sccsid = "@(#)scandir.c        1.3     (Berkeley) 6/26/87";
        !             3: #endif
        !             4: 
        !             5: #include "common.h"
        !             6: 
        !             7: /*
        !             8:  * scan_dir -- scan the current directory for news articles,
        !             9:  *     loading the article numbers into art_array.  Return
        !            10:  *     number of articles loaded.
        !            11:  *
        !            12:  *     Paramaters:     "low_msg", "high_msg" are the low
        !            13:  *                     and high messages numbers in this
        !            14:  *                     group; we ignore numbers outside this
        !            15:  *                     range.
        !            16:  *
        !            17:  *     Returns:        Number of articles loaded into
        !            18:  *                     array.
        !            19:  *
        !            20:  *     Side effects:   Changes "art_array".
        !            21:  */
        !            22: 
        !            23: extern int     intcmp();
        !            24: 
        !            25: scan_dir(low_msg, high_msg)
        !            26: int    low_msg, high_msg;
        !            27: {
        !            28:        register struct direct  *dirent;
        !            29:        register DIR            *dirp;
        !            30:        int                     artnum;
        !            31: 
        !            32:        num_arts = 0;
        !            33: 
        !            34:        dirp = opendir(".");
        !            35: 
        !            36:        if (dirp == NULL)
        !            37:                return (0);
        !            38: 
        !            39:        while ((dirent = readdir(dirp)) != NULL) {
        !            40:                artnum = atoi(dirent->d_name);
        !            41:                if (artnum != 0 && artnum >= low_msg && artnum <= high_msg)
        !            42:                        art_array[num_arts++] = artnum;
        !            43:        }
        !            44: 
        !            45:        closedir(dirp);
        !            46: 
        !            47:        qsort((char *) art_array, num_arts, sizeof(int), intcmp);
        !            48: 
        !            49:        return (num_arts);
        !            50: }
        !            51: 
        !            52: 
        !            53: /*
        !            54:  * intcmp -- compare to integers.
        !            55:  *
        !            56:  *     Parameters:     "x", "y" point to the integers to be compared.
        !            57:  *
        !            58:  *     Returns:        -1 if "x" is less than "y",
        !            59:  *                     0 if "x" equals "y", and
        !            60:  *                     1 if "x" is greater than "y".
        !            61:  *
        !            62:  *     Side effects:   None.
        !            63:  */
        !            64: 
        !            65: intcmp(x, y)
        !            66: register int   *x, *y;
        !            67: {
        !            68:        return (*x - *y);
        !            69: }

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