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Annotation of 40BSD/lib/libtermlib/tc3.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * tc3 [term]
        !             3:  * Dummy program to test out termlib.
        !             4:  * Input two numbers and it prints out the tgoto string generated.
        !             5:  */
        !             6: #include <stdio.h>
        !             7: char buf[1024];
        !             8: char *getenv(), *tgetstr();
        !             9: char *rdchar();
        !            10: char *tgoto();
        !            11: char *CM;
        !            12: char cmbuff[30];
        !            13: char *x;
        !            14: char *UP;
        !            15: char *tgout;
        !            16: 
        !            17: main(argc, argv) char **argv; {
        !            18:        char *p;
        !            19:        int rc;
        !            20:        int row, col;
        !            21: 
        !            22:        if (argc < 2)
        !            23:                p = getenv("TERM");
        !            24:        else
        !            25:                p = argv[1];
        !            26:        rc = tgetent(buf,p);
        !            27:        x = cmbuff;
        !            28:        UP = tgetstr("up", &x);
        !            29:        printf("UP = %x = ", UP); pr(UP); printf("\n");
        !            30:        if (UP && *UP==0)
        !            31:                UP = 0;
        !            32:        CM = tgetstr("cm", &x);
        !            33:        printf("CM = "); pr(CM); printf("\n");
        !            34:        for (;;) {
        !            35:                if (scanf("%d %d", &row, &col) < 2)
        !            36:                        exit(0);
        !            37:                tgout = tgoto(CM, row, col);
        !            38:                pr(tgout);
        !            39:                printf("\n");
        !            40:        }
        !            41: }
        !            42: 
        !            43: pr(p)
        !            44: register char *p;
        !            45: {
        !            46:        for (; *p; p++)
        !            47:                printf("%s", rdchar(*p));
        !            48: }
        !            49: 
        !            50: /*
        !            51:  * rdchar: returns a readable representation of an ASCII char, using ^ notation.
        !            52:  */
        !            53: #include <ctype.h>
        !            54: char *rdchar(c)
        !            55: char c;
        !            56: {
        !            57:        static char ret[4];
        !            58:        register char *p;
        !            59: 
        !            60:        /*
        !            61:         * Due to a bug in isprint, this prints spaces as ^`, but this is OK
        !            62:         * because we want something to show up on the screen.
        !            63:         */
        !            64:        ret[0] = ((c&0377) > 0177) ? '\'' : ' ';
        !            65:        c &= 0177;
        !            66:        ret[1] = isprint(c) ? ' ' : '^';
        !            67:        ret[2] = isprint(c) ?  c  : c^0100;
        !            68:        ret[3] = 0;
        !            69:        for (p=ret; *p==' '; p++)
        !            70:                ;
        !            71:        return (p);
        !            72: }

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