1 /*- 2 * Copyright (c) 1991, 1993, 1994 3 * The Regents of the University of California. All rights reserved. 4 * Copyright (c) 1991, 1993, 1994, 1995, 1996 5 * Keith Bostic. All rights reserved. 6 * 7 * See the LICENSE file for redistribution information. 8 */ 9 10 /* 11 * Edit option information. Historically, if you set a boolean or numeric 12 * edit option value to its "default" value, it didn't show up in the :set 13 * display, i.e. it wasn't considered "changed". String edit options would 14 * show up as changed, regardless. We maintain a parallel set of values 15 * which are the default values and never consider an edit option changed 16 * if it was reset to the default value. 17 * 18 * Macros to retrieve boolean, integral and string option values, and to 19 * set, clear and test boolean option values. Some options (secure, lines, 20 * columns, terminal type) are global in scope, and are therefore stored 21 * in the global area. The offset in the global options array is stored 22 * in the screen's value field. This is set up when the options are first 23 * initialized. 24 */ 25 #define O_V(sp, o, fld) \ 26 (F_ISSET(&(sp)->opts[(o)], OPT_GLOBAL) ? \ 27 (sp)->gp->opts[(sp)->opts[(o)].o_cur.val].fld : \ 28 (sp)->opts[(o)].fld) 29 30 /* Global option macros. */ 31 #define OG_CLR(gp, o) ((gp)->opts[(o)].o_cur.val) = 0 32 #define OG_SET(gp, o) ((gp)->opts[(o)].o_cur.val) = 1 33 #define OG_STR(gp, o) ((gp)->opts[(o)].o_cur.str) 34 #define OG_VAL(gp, o) ((gp)->opts[(o)].o_cur.val) 35 #define OG_ISSET(gp, o) OG_VAL(gp, o) 36 37 #define OG_D_STR(gp, o) ((gp)->opts[(o)].o_def.str) 38 #define OG_D_VAL(gp, o) ((gp)->opts[(o)].o_def.val) 39 40 /* 41 * Flags to o_set(); need explicit OS_STR as can be setting the value to 42 * NULL. 43 */ 44 #define OS_DEF 0x01 /* Set the default value. */ 45 #define OS_NOFREE 0x02 /* Don't free the old string. */ 46 #define OS_STR 0x04 /* Set to string argument. */ 47 #define OS_STRDUP 0x08 /* Copy then set to string argument. */ 48 49 struct _option { 50 union { 51 u_long val; /* Value or boolean. */ 52 char *str; /* String. */ 53 } o_cur; 54 #define O_CLR(sp, o) o_set(sp, o, 0, NULL, 0) 55 #define O_SET(sp, o) o_set(sp, o, 0, NULL, 1) 56 #define O_STR(sp, o) O_V(sp, o, o_cur.str) 57 #define O_VAL(sp, o) O_V(sp, o, o_cur.val) 58 #define O_ISSET(sp, o) O_VAL(sp, o) 59 60 union { 61 u_long val; /* Value or boolean. */ 62 char *str; /* String. */ 63 } o_def; 64 #define O_D_CLR(sp, o) o_set(sp, o, OS_DEF, NULL, 0) 65 #define O_D_SET(sp, o) o_set(sp, o, OS_DEF, NULL, 1) 66 #define O_D_STR(sp, o) O_V(sp, o, o_def.str) 67 #define O_D_VAL(sp, o) O_V(sp, o, o_def.val) 68 #define O_D_ISSET(sp, o) O_D_VAL(sp, o) 69 70 #define OPT_GLOBAL 0x01 /* Option is global. */ 71 #define OPT_SELECTED 0x02 /* Selected for display. */ 72 u_int8_t flags; 73 }; 74 75 /* List of option names, associated update functions and information. */ 76 struct _optlist { 77 CHAR_T *name; /* Name. */ 78 /* Change function. */ 79 int (*func)(SCR *, OPTION *, char *, u_long *); 80 /* Type of object. */ 81 enum { OPT_0BOOL, OPT_1BOOL, OPT_NUM, OPT_STR } type; 82 83 #define OPT_ADISP 0x001 /* Always display the option. */ 84 #define OPT_ALWAYS 0x002 /* Always call the support function. */ 85 #define OPT_NDISP 0x004 /* Never display the option. */ 86 #define OPT_NOSAVE 0x008 /* Mkexrc command doesn't save. */ 87 #define OPT_NOSET 0x010 /* Option may not be set. */ 88 #define OPT_NOUNSET 0x020 /* Option may not be unset. */ 89 #define OPT_NOZERO 0x040 /* Option may not be set to 0. */ 90 #define OPT_PAIRS 0x080 /* String with even length. */ 91 u_int8_t flags; 92 }; 93 94 /* Option argument to opts_dump(). */ 95 enum optdisp { NO_DISPLAY, ALL_DISPLAY, CHANGED_DISPLAY, SELECT_DISPLAY }; 96 97 /* Options array. */ 98 extern OPTLIST const optlist[]; 99 100 #include "options_def.h" 101