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Annotation of 43BSDReno/games/fortune/unstr.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1989 The Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * This code is derived from software contributed to Berkeley by
        !             6:  * Ken Arnold.
        !             7:  *
        !             8:  * Redistribution and use in source and binary forms are permitted
        !             9:  * provided that the above copyright notice and this paragraph are
        !            10:  * duplicated in all such forms and that any documentation,
        !            11:  * advertising materials, and other materials related to such
        !            12:  * distribution and use acknowledge that the software was developed
        !            13:  * by the University of California, Berkeley.  The name of the
        !            14:  * University may not be used to endorse or promote products derived
        !            15:  * from this software without specific prior written permission.
        !            16:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            17:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            18:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            19:  */
        !            20: 
        !            21: #ifndef lint
        !            22: char copyright[] =
        !            23: "@(#) Copyright (c) 1989 The Regents of the University of California.\n\
        !            24:  All rights reserved.\n";
        !            25: #endif /* not lint */
        !            26: 
        !            27: #ifndef lint
        !            28: static char sccsid[] = "@(#)unstr.c    5.6 (Berkeley) 12/15/89";
        !            29: #endif /* not lint */
        !            30: 
        !            31: /*
        !            32:  *     This program un-does what "strfile" makes, thereby obtaining the
        !            33:  * original file again.  This can be invoked with the name of the output
        !            34:  * file, the input file, or both. If invoked with only a single argument
        !            35:  * ending in ".dat", it is pressumed to be the input file and the output
        !            36:  * file will be the same stripped of the ".dat".  If the single argument
        !            37:  * doesn't end in ".dat", then it is presumed to be the output file, and
        !            38:  * the input file is that name prepended by a ".dat".  If both are given
        !            39:  * they are treated literally as the input and output files.
        !            40:  *
        !            41:  *     Ken Arnold              Aug 13, 1978
        !            42:  */
        !            43: 
        !            44: # include      <machine/endian.h>
        !            45: # include      <sys/param.h>
        !            46: # include      "strfile.h"
        !            47: # include      <stdio.h>
        !            48: # include      <ctype.h>
        !            49: 
        !            50: # ifndef MAXPATHLEN
        !            51: # define       MAXPATHLEN      1024
        !            52: # endif        /* MAXPATHLEN */
        !            53: 
        !            54: char   *Infile,                        /* name of input file */
        !            55:        Datafile[MAXPATHLEN],           /* name of data file */
        !            56:        Delimch;                        /* delimiter character */
        !            57: 
        !            58: FILE   *Inf, *Dataf;
        !            59: 
        !            60: char   *strcat(), *strcpy();
        !            61: 
        !            62: /* ARGSUSED */
        !            63: main(ac, av)
        !            64: int    ac;
        !            65: char   **av;
        !            66: {
        !            67:        static STRFILE  tbl;            /* description table */
        !            68: 
        !            69:        getargs(av);
        !            70:        if ((Inf = fopen(Infile, "r")) == NULL) {
        !            71:                perror(Infile);
        !            72:                exit(1);
        !            73:        }
        !            74:        if ((Dataf = fopen(Datafile, "r")) == NULL) {
        !            75:                perror(Datafile);
        !            76:                exit(1);
        !            77:        }
        !            78:        (void) fread((char *) &tbl, sizeof tbl, 1, Dataf);
        !            79:        tbl.str_version = ntohl(tbl.str_version);
        !            80:        tbl.str_numstr = ntohl(tbl.str_numstr);
        !            81:        tbl.str_longlen = ntohl(tbl.str_longlen);
        !            82:        tbl.str_shortlen = ntohl(tbl.str_shortlen);
        !            83:        tbl.str_flags = ntohl(tbl.str_flags);
        !            84:        if (!(tbl.str_flags & (STR_ORDERED | STR_RANDOM))) {
        !            85:                fprintf(stderr, "nothing to do -- table in file order\n");
        !            86:                exit(1);
        !            87:        }
        !            88:        Delimch = tbl.str_delim;
        !            89:        order_unstr(&tbl);
        !            90:        (void) fclose(Inf);
        !            91:        (void) fclose(Dataf);
        !            92:        exit(0);
        !            93: }
        !            94: 
        !            95: getargs(av)
        !            96: register char  *av[];
        !            97: {
        !            98:        if (!*++av) {
        !            99:                (void) fprintf(stderr, "usage: unstr datafile\n");
        !           100:                exit(1);
        !           101:        }
        !           102:        Infile = *av;
        !           103:        (void) strcpy(Datafile, Infile);
        !           104:        (void) strcat(Datafile, ".dat");
        !           105: }
        !           106: 
        !           107: order_unstr(tbl)
        !           108: register STRFILE       *tbl;
        !           109: {
        !           110:        register int    i;
        !           111:        register char   *sp;
        !           112:        auto off_t      pos;
        !           113:        char            buf[BUFSIZ];
        !           114: 
        !           115:        for (i = 0; i < tbl->str_numstr; i++) {
        !           116:                (void) fread((char *) &pos, 1, sizeof pos, Dataf);
        !           117:                (void) fseek(Inf, ntohl(pos), 0);
        !           118:                if (i != 0)
        !           119:                        (void) printf("%c\n", Delimch);
        !           120:                for (;;) {
        !           121:                        sp = fgets(buf, sizeof buf, Inf);
        !           122:                        if (sp == NULL || STR_ENDSTRING(sp, *tbl))
        !           123:                                break;
        !           124:                        else
        !           125:                                fputs(sp, stdout);
        !           126:                }
        !           127:        }
        !           128: }

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