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Annotation of src/usr.bin/less/option.h, Revision 1.1.1.1

1.1       etheisen    1: /*
                      2:  * Copyright (c) 1984,1985,1989,1994,1995  Mark Nudelman
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms, with or without
                      6:  * modification, are permitted provided that the following conditions
                      7:  * are met:
                      8:  * 1. Redistributions of source code must retain the above copyright
                      9:  *    notice, this list of conditions and the following disclaimer.
                     10:  * 2. Redistributions in binary form must reproduce the above copyright
                     11:  *    notice in the documentation and/or other materials provided with
                     12:  *    the distribution.
                     13:  *
                     14:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY
                     15:  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     16:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
                     17:  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE
                     18:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
                     19:  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
                     20:  * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
                     21:  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
                     22:  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
                     23:  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
                     24:  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
                     25:  */
                     26:
                     27:
                     28: #define        END_OPTION_STRING       ('$')
                     29:
                     30: /*
                     31:  * Types of options.
                     32:  */
                     33: #define        BOOL            01      /* Boolean option: 0 or 1 */
                     34: #define        TRIPLE          02      /* Triple-valued option: 0, 1 or 2 */
                     35: #define        NUMBER          04      /* Numeric option */
                     36: #define        STRING          010     /* String-valued option */
                     37: #define        NOVAR           020     /* No associated variable */
                     38: #define        REPAINT         040     /* Repaint screen after toggling option */
                     39: #define        NO_TOGGLE       0100    /* Option cannot be toggled with "-" cmd */
                     40: #define        HL_REPAINT      0200    /* Repaint hilites after toggling option */
                     41: #define        NO_QUERY        0400    /* Option cannot be queried with "_" cmd */
                     42:
                     43: #define        OTYPE           (BOOL|TRIPLE|NUMBER|STRING|NOVAR)
                     44:
                     45: /*
                     46:  * Argument to a handling function tells what type of activity:
                     47:  */
                     48: #define        INIT    0       /* Initialization (from command line) */
                     49: #define        QUERY   1       /* Query (from _ or - command) */
                     50: #define        TOGGLE  2       /* Change value (from - command) */
                     51:
                     52: /* Flag to toggle_option to specify how to "toggle" */
                     53: #define        OPT_NO_TOGGLE   0
                     54: #define        OPT_TOGGLE      1
                     55: #define        OPT_UNSET       2
                     56: #define        OPT_SET         3
                     57:
                     58: struct option
                     59: {
                     60:        char oletter;           /* The controlling letter (a-z) */
                     61:        int otype;              /* Type of the option */
                     62:        int odefault;           /* Default value */
                     63:        int *ovar;              /* Pointer to the associated variable */
                     64:        void (*ofunc)();        /* Pointer to special handling function */
                     65:        char *odesc[3];         /* Description of each value */
                     66: };
                     67: