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Annotation of 43BSDReno/contrib/isode-beta/psap/str2ps.c, revision 1.1

1.1     ! root        1: /* str2ps.c - string-backed abstraction for PStreams */
        !             2: 
        !             3: #ifndef        lint
        !             4: static char *rcsid = "$Header: /f/osi/psap/RCS/str2ps.c,v 7.0 89/11/23 22:13:48 mrose Rel $";
        !             5: #endif
        !             6: 
        !             7: /* 
        !             8:  * $Header: /f/osi/psap/RCS/str2ps.c,v 7.0 89/11/23 22:13:48 mrose Rel $
        !             9:  *
        !            10:  *
        !            11:  * $Log:       str2ps.c,v $
        !            12:  * Revision 7.0  89/11/23  22:13:48  mrose
        !            13:  * Release 6.0
        !            14:  * 
        !            15:  */
        !            16: 
        !            17: /*
        !            18:  *                               NOTICE
        !            19:  *
        !            20:  *    Acquisition, use, and distribution of this module and related
        !            21:  *    materials are subject to the restrictions of a license agreement.
        !            22:  *    Consult the Preface in the User's Manual for the full terms of
        !            23:  *    this agreement.
        !            24:  *
        !            25:  */
        !            26: 
        !            27: 
        !            28: /* LINTLIBRARY */
        !            29: 
        !            30: #include <stdio.h>
        !            31: #include "psap.h"
        !            32: 
        !            33: /*  */
        !            34: 
        !            35: /* ARGSUSED */
        !            36: 
        !            37: static int str_read (ps, data, n, in_line)
        !            38: register PS    ps;
        !            39: PElementData data;
        !            40: PElementLen n;
        !            41: int    in_line;
        !            42: {
        !            43:     register int    cc;
        !            44: 
        !            45:     if (ps -> ps_base == NULLCP || (cc = ps -> ps_cnt) <= 0)
        !            46:        return 0;
        !            47:     if (cc > n)
        !            48:        cc = n;
        !            49: 
        !            50:     bcopy (ps -> ps_ptr, (char *) data, cc);
        !            51:     ps -> ps_ptr += cc, ps -> ps_cnt -= cc;
        !            52: 
        !            53:     return cc;
        !            54: }
        !            55: 
        !            56: 
        !            57: /* ARGSUSED */
        !            58: 
        !            59: static int str_write (ps, data, n, in_line)
        !            60: register PS    ps;
        !            61: PElementData data;
        !            62: PElementLen n;
        !            63: int    in_line;
        !            64: {
        !            65:     register int    cc;
        !            66:     register char  *cp;
        !            67: 
        !            68:     if (ps -> ps_base == NULLCP) {
        !            69:        if ((cp = malloc ((unsigned) (cc = n + BUFSIZ))) == NULLCP)
        !            70:            return ps_seterr (ps, PS_ERR_NMEM, NOTOK);
        !            71:        ps -> ps_base = ps -> ps_ptr = cp;
        !            72:        ps -> ps_bufsiz = ps -> ps_cnt = cc;
        !            73:     }
        !            74:     else
        !            75:        if (ps -> ps_cnt < n) {
        !            76:            register int    curlen = ps -> ps_ptr - ps -> ps_base;
        !            77: 
        !            78:            if (ps -> ps_inline)
        !            79:                return 0;
        !            80:            if ((cp = realloc (ps -> ps_base,
        !            81:                                      (unsigned) (ps -> ps_bufsiz
        !            82:                                                  + (cc = n + BUFSIZ))))
        !            83:                    == NULLCP)
        !            84:                return ps_seterr (ps, PS_ERR_NMEM, NOTOK);
        !            85:            ps -> ps_ptr = (ps -> ps_base = cp) + curlen;
        !            86:            ps -> ps_bufsiz += cc, ps -> ps_cnt += cc;
        !            87:        }
        !            88: 
        !            89:     bcopy ((char *) data, ps -> ps_ptr, n);
        !            90:     ps -> ps_ptr += n, ps -> ps_cnt -= n;
        !            91: 
        !            92:     return n;
        !            93: }
        !            94: 
        !            95: 
        !            96: static int str_close (ps)
        !            97: register PS    ps;
        !            98: {
        !            99:     if (ps -> ps_base && !ps -> ps_inline)
        !           100:        free (ps -> ps_base);
        !           101: 
        !           102:     return OK;
        !           103: }
        !           104: 
        !           105: /*  */
        !           106: 
        !           107: int    str_open (ps)
        !           108: register PS    ps;
        !           109: {
        !           110:     ps -> ps_readP = str_read;
        !           111:     ps -> ps_writeP = str_write;
        !           112:     ps -> ps_closeP = str_close;
        !           113: 
        !           114:     return OK;
        !           115: }
        !           116: 
        !           117: 
        !           118: int    str_setup (ps, cp, cc, in_line)
        !           119: register PS    ps;
        !           120: register char  *cp;
        !           121: register int   cc;
        !           122: int    in_line;
        !           123: {
        !           124:     register char  *dp;
        !           125: 
        !           126:     if (in_line) {
        !           127:        ps -> ps_inline = 1;
        !           128:        ps -> ps_base = ps -> ps_ptr = cp;
        !           129:        ps -> ps_bufsiz = ps -> ps_cnt = cc;
        !           130:     }
        !           131:     else
        !           132:        if (cc > 0) {
        !           133:            if ((dp = malloc ((unsigned) (cc))) == NULLCP)
        !           134:                return ps_seterr (ps, PS_ERR_NMEM, NOTOK);
        !           135:            ps -> ps_base = ps -> ps_ptr = dp;
        !           136:            if (cp != NULLCP)
        !           137:                bcopy (cp, dp, cc);
        !           138:            ps -> ps_bufsiz = ps -> ps_cnt = cc;
        !           139:        }
        !           140: 
        !           141:     return OK;
        !           142: }

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