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Annotation of 43BSDReno/usr.bin/soelim/soelim.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1980 The Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms are permitted
        !             6:  * provided that: (1) source distributions retain this entire copyright
        !             7:  * notice and comment, and (2) distributions including binaries display
        !             8:  * the following acknowledgement:  ``This product includes software
        !             9:  * developed by the University of California, Berkeley and its contributors''
        !            10:  * in the documentation or other materials provided with the distribution
        !            11:  * and in all advertising materials mentioning features or use of this
        !            12:  * software. Neither the name of the University nor the names of its
        !            13:  * contributors may be used to endorse or promote products derived
        !            14:  * from this software without specific prior written permission.
        !            15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            16:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            17:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            18:  */
        !            19: 
        !            20: #ifndef lint
        !            21: char copyright[] =
        !            22: "@(#) Copyright (c) 1980 The Regents of the University of California.\n\
        !            23:  All rights reserved.\n";
        !            24: #endif /* not lint */
        !            25: 
        !            26: #ifndef lint
        !            27: static char sccsid[] = "@(#)soelim.c   5.3 (Berkeley) 6/1/90";
        !            28: #endif /* not lint */
        !            29: 
        !            30: #include <stdio.h>
        !            31: /*
        !            32:  * soelim - a filter to process n/troff input eliminating .so's
        !            33:  *
        !            34:  * Author: Bill Joy UCB July 8, 1977
        !            35:  *
        !            36:  * This program eliminates .so's from a n/troff input stream.
        !            37:  * It can be used to prepare safe input for submission to the
        !            38:  * phototypesetter since the software supporting the operator
        !            39:  * doesn't let him do chdir.
        !            40:  *
        !            41:  * This is a kludge and the operator should be given the
        !            42:  * ability to do chdir.
        !            43:  *
        !            44:  * This program is more generally useful, it turns out, because
        !            45:  * the program tbl doesn't understand ".so" directives.
        !            46:  */
        !            47: #define        STDIN_NAME      "-"
        !            48: 
        !            49: main(argc, argv)
        !            50:        int argc;
        !            51:        char *argv[];
        !            52: {
        !            53: 
        !            54:        argc--;
        !            55:        argv++;
        !            56:        if (argc == 0) {
        !            57:                (void)process(STDIN_NAME);
        !            58:                exit(0);
        !            59:        }
        !            60:        do {
        !            61:                (void)process(argv[0]);
        !            62:                argv++;
        !            63:                argc--;
        !            64:        } while (argc > 0);
        !            65:        exit(0);
        !            66: }
        !            67: 
        !            68: int process(file)
        !            69:        char *file;
        !            70: {
        !            71:        register char *cp;
        !            72:        register int c;
        !            73:        char fname[BUFSIZ];
        !            74:        FILE *soee;
        !            75:        int isfile;
        !            76: 
        !            77:        if (!strcmp(file, STDIN_NAME)) {
        !            78:                soee = stdin;
        !            79:        } else {
        !            80:                soee = fopen(file, "r");
        !            81:                if (soee == NULL) {
        !            82:                        perror(file);
        !            83:                        return(-1);
        !            84:                }
        !            85:        }
        !            86:        for (;;) {
        !            87:                c = getc(soee);
        !            88:                if (c == EOF)
        !            89:                        break;
        !            90:                if (c != '.')
        !            91:                        goto simple;
        !            92:                c = getc(soee);
        !            93:                if (c != 's') {
        !            94:                        putchar('.');
        !            95:                        goto simple;
        !            96:                }
        !            97:                c = getc(soee);
        !            98:                if (c != 'o') {
        !            99:                        printf(".s");
        !           100:                        goto simple;
        !           101:                }
        !           102:                do
        !           103:                        c = getc(soee);
        !           104:                while (c == ' ' || c == '\t');
        !           105:                cp = fname;
        !           106:                isfile = 0;
        !           107:                for (;;) {
        !           108:                        switch (c) {
        !           109: 
        !           110:                        case ' ':
        !           111:                        case '\t':
        !           112:                        case '\n':
        !           113:                        case EOF:
        !           114:                                goto donename;
        !           115: 
        !           116:                        default:
        !           117:                                *cp++ = c;
        !           118:                                c = getc(soee);
        !           119:                                isfile++;
        !           120:                                continue;
        !           121:                        }
        !           122:                }
        !           123: donename:
        !           124:                if (cp == fname) {
        !           125:                        printf(".so");
        !           126:                        goto simple;
        !           127:                }
        !           128:                *cp = 0;
        !           129:                if (process(fname) < 0)
        !           130:                        if (isfile)
        !           131:                                printf(".so %s\n", fname);
        !           132:                continue;
        !           133: simple:
        !           134:                if (c == EOF)
        !           135:                        break;
        !           136:                putchar(c);
        !           137:                if (c != '\n') {
        !           138:                        c = getc(soee);
        !           139:                        goto simple;
        !           140:                }
        !           141:        }
        !           142:        if (soee != stdin) {
        !           143:                fclose(soee);
        !           144:        }
        !           145:        return(0);
        !           146: }

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