1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 28 /* All Rights Reserved */ 29 30 31 /* Copyright (c) 1981 Regents of the University of California */ 32 33 #ifndef _EX_VIS_H 34 #define _EX_VIS_H 35 36 #pragma ident "%Z%%M% %I% %E% SMI" 37 38 #ifdef __cplusplus 39 extern "C" { 40 #endif 41 42 /* 43 * Ex version 3 44 * 45 * Open and visual mode definitions. 46 * 47 * There are actually 4 major states in open/visual modes. These 48 * are visual, crt open (where the cursor can move about the screen and 49 * the screen can scroll and be erased), one line open (on dumb glass-crt's 50 * like the adm3), and hardcopy open (for everything else). 51 * 52 * The basic state is given by bastate, and the current state by state, 53 * since we can be in pseudo-hardcopy mode if we are on an adm3 and the 54 * line is longer than 80. 55 */ 56 57 var short bastate; 58 var short state; 59 60 #define VISUAL 0 61 #define CRTOPEN 1 62 #define ONEOPEN 2 63 #define HARDOPEN 3 64 65 /* 66 * The screen in visual and crtopen is of varying size; the basic 67 * window has top basWTOP and basWLINES lines are thereby implied. 68 * The current window (which may have grown from the basic size) 69 * has top WTOP and WLINES lines. The top line of the window is WTOP, 70 * and the bottom line WBOT. The line WECHO is used for messages, 71 * search strings and the like. If WBOT==WECHO then we are in ONEOPEN 72 * or HARDOPEN and there is no way back to the line we were on if we 73 * go to WECHO (i.e. we will have to scroll before we go there, and 74 * we can't get back). There are WCOLS columns per line. 75 * If WBOT!=WECHO then WECHO will be the last line on the screen 76 * and WBOT is the line before it. 77 */ 78 var short basWTOP; 79 var short basWLINES; 80 var short WTOP; 81 var short WBOT; 82 var short WLINES; 83 var short WCOLS; 84 var short WECHO; 85 86 /* 87 * When we are dealing with the echo area we consider the window 88 * to be "split" and set the variable splitw. Otherwise, moving 89 * off the bottom of the screen into WECHO causes a screen rollup. 90 */ 91 var bool splitw; 92 93 /* 94 * Information about each line currently on the screen includes 95 * the y coordinate associated with the line, the printing depth 96 * of the line (0 indicates unknown), and a mask which indicates 97 * whether the line is "unclean", i.e. whether we should check 98 * to make sure the line is displayed correctly at the next 99 * appropriate juncture. 100 */ 101 struct vlinfo { 102 short vliny; /* Y coordinate */ /* was char */ 103 short vdepth; /* Depth of displayed line */ /* was char */ 104 short vflags; /* Is line potentially dirty ? */ 105 }; 106 var struct vlinfo vlinfo[TUBELINES + 2]; 107 108 #define DEPTH(c) (vlinfo[c].vdepth) 109 #define LINE(c) (vlinfo[c].vliny) 110 #define FLAGS(c) (vlinfo[c].vflags) 111 112 #define VDIRT 1 113 114 /* 115 * Hacks to copy vlinfo structures around 116 */ 117 #ifdef V6 118 /* Kludge to make up for no structure assignment */ 119 struct { 120 long longi; 121 }; 122 #define vlcopy(i, j) i.longi = j.longi 123 #else 124 #define vlcopy(i, j) i = j; 125 #endif 126 127 /* 128 * The current line on the screen is represented by vcline. 129 * There are vcnt lines on the screen, the last being "vcnt - 1". 130 * Vcline is intimately tied to the current value of dot, 131 * and when command mode is used as a subroutine fancy footwork occurs. 132 */ 133 var short vcline; 134 var short vcnt; 135 136 /* 137 * To allow many optimizations on output, an exact image of the terminal 138 * screen is maintained in the space addressed by vtube0. The vtube 139 * array indexes this space as lines, and is shuffled on scrolls, insert+delete 140 * lines and the like rather than (more expensively) shuffling the screen 141 * data itself. It is also rearranged during insert mode across line 142 * boundaries to make incore work easier. 143 */ 144 var wchar_t *vtube[TUBELINES]; 145 var wchar_t *vtube0; 146 147 /* 148 * The current cursor position within the current line is kept in 149 * cursor. The current line is kept in linebuf. During insertions 150 * we use the auxiliary array genbuf as scratch area. 151 * The cursor wcursor and wdot are used in operations within/spanning 152 * lines to mark the other end of the affected area, or the target 153 * for a motion. 154 */ 155 var unsigned char *cursor; 156 var unsigned char *wcursor; 157 var line *wdot; 158 159 /* 160 * Undo information is saved in a LBSIZE buffer at "vutmp" for changes 161 * within the current line, or as for command mode for multi-line changes 162 * or changes on lines no longer the current line. 163 * The change kind "VCAPU" is used immediately after a U undo to prevent 164 * two successive U undo's from destroying the previous state. 165 */ 166 #define VNONE 0 167 #define VCHNG 1 168 #define VMANY 2 169 #define VCAPU 3 170 #define VMCHNG 4 171 #define VMANYINS 5 172 173 var short vundkind; /* Which kind of undo - from above */ 174 var unsigned char *vutmp; /* Prev line image when "VCHNG" */ 175 176 /* 177 * State information for undoing of macros. The basic idea is that 178 * if the macro does only 1 change or even none, we don't treat it 179 * specially. If it does 2 or more changes we want to be able to 180 * undo it as a unit. We remember how many changes have been made 181 * within the current macro. (Remember macros can be nested.) 182 */ 183 #define VC_NOTINMAC 0 /* Not in a macro */ 184 #define VC_NOCHANGE 1 /* In a macro, no changes so far */ 185 #define VC_ONECHANGE 2 /* In a macro, one change so far */ 186 #define VC_MANYCHANGE 3 /* In a macro, at least 2 changes so far */ 187 188 var short vch_mac; /* Change state - one of the above */ 189 190 /* 191 * For U undo's the line is grabbed by "vmove" after it first appears 192 * on that line. The "vUNDdot" which specifies which line has been 193 * saved is selectively cleared when changes involving other lines 194 * are made, i.e. after a 'J' join. This is because a 'JU' would 195 * lose completely the text of the line just joined on. 196 */ 197 var unsigned char *vUNDcurs; /* Cursor just before 'U' */ 198 var line *vUNDdot; /* The line address of line saved in vUNDsav */ 199 var line vUNDsav; /* Grabbed initial "*dot" */ 200 201 #define killU() vUNDdot = NOLINE 202 203 /* 204 * There are a number of cases where special behaviour is needed 205 * from deeply nested routines. This is accomplished by setting 206 * the bits of hold, which acts to change the state of the general 207 * visual editing behaviour in specific ways. 208 * 209 * HOLDAT prevents the clreol (clear to end of line) routines from 210 * putting out @'s or ~'s on empty lines. 211 * 212 * HOLDDOL prevents the reopen routine from putting a '$' at the 213 * end of a reopened line in list mode (for hardcopy mode, e.g.). 214 * 215 * HOLDROL prevents spurious blank lines when scrolling in hardcopy 216 * open mode. 217 * 218 * HOLDQIK prevents the fake insert mode during repeated commands. 219 * 220 * HOLDPUPD prevents updating of the physical screen image when 221 * mucking around while in insert mode. 222 * 223 * HOLDECH prevents clearing of the echo area while rolling the screen 224 * backwards (e.g.) in deference to the clearing of the area at the 225 * end of the scroll (1 time instead of n times). The fact that this 226 * is actually needed is recorded in heldech, which says that a clear 227 * of the echo area was actually held off. 228 */ 229 var short hold; 230 var short holdupd; /* Hold off update when echo line is too long */ 231 232 #define HOLDAT 1 233 #define HOLDDOL 2 234 #define HOLDROL 4 235 #define HOLDQIK 8 236 #define HOLDPUPD 16 237 #define HOLDECH 32 238 #define HOLDWIG 64 239 240 /* 241 * Miscellaneous variables 242 */ 243 var short CDCNT; /* Count of ^D's in insert on this line */ 244 var unsigned char DEL[VBSIZE+1]; /* Last deleted text */ 245 var bool HADUP; /* This insert line started with ^ then ^D */ 246 var bool HADZERO; /* This insert line started with 0 then ^D */ 247 var unsigned char INS[VBSIZE+1]; /* Last inserted text */ 248 var int Vlines; /* Number of file lines "before" vi command */ 249 var int Xcnt; /* External variable holding last cmd's count */ 250 var bool Xhadcnt; /* Last command had explicit count? */ 251 var short ZERO; 252 var short dir; /* Direction for search (+1 or -1) */ 253 var short doomed; /* Disply chars right of cursor to be killed */ 254 var bool gobblebl; /* Wrapmargin space generated nl, eat a space */ 255 var bool hadcnt; /* (Almost) internal to vmain() */ 256 var bool heldech; /* We owe a clear of echo area */ 257 var bool insmode; /* Are in character insert mode */ 258 var unsigned char lastcmd[5]; /* Chars in last command */ 259 var int lastcnt; /* Count for last command */ 260 var unsigned char *lastcp; /* Save current command here to repeat */ 261 var bool lasthad; /* Last command had a count? */ 262 var short lastvgk; /* Previous input key, if not from keyboard */ 263 var short lastreg; /* Register with last command */ 264 var unsigned char *ncols['z'-'a'+2]; /* Cursor positions of marks */ 265 var unsigned char *notenam; /* Name to be noted with change count */ 266 var unsigned char *notesgn; /* Change count from last command */ 267 var unsigned char op; /* Operation of current command */ 268 var int Peekkey; /* Peek ahead key */ 269 var bool rubble; /* Line is filthy (in hardcopy open), redraw! */ 270 var int vSCROLL; /* Number lines to scroll on ^D/^U */ 271 var unsigned char *vglobp; /* Untyped input (e.g. repeat insert text) */ 272 var unsigned char vmacbuf[VBSIZE]; /* Text of visual macro, hence nonnestable */ 273 var unsigned char *vmacp; /* Like vglobp but for visual macros */ 274 var unsigned char *vmcurs; /* Cursor for restore after undo d), e.g. */ 275 var short vmovcol; /* Column to try to keep on arrow keys */ 276 var bool vmoving; /* Are trying to keep vmovcol */ 277 var short vreg; /* Reg for this command */ /* mjm: was char */ 278 var short wdkind; /* Liberal/conservative words? */ 279 var unsigned char workcmd[5]; /* Temporary for lastcmd */ 280 var bool rewrite; 281 #ifdef XPG4 282 var int P_cursor_offset; /* cursor adjust for Put */ 283 #endif 284 #ifndef PRESUNEUC 285 var unsigned char wcharfiller; /* Right margin filler for wide char */ 286 #endif /* PRESUNEUC */ 287 288 289 /* 290 * Macros 291 */ 292 #define INF 30000 293 #define LASTLINE LINE(vcnt) 294 #define beep obeep 295 #define cindent() ((outline - vlinfo[vcline].vliny) * WCOLS + outcol) 296 #define vputp(cp, cnt) tputs(cp, cnt, vputch) 297 #define vputc(c) putch(c) 298 #define _ON 1 299 #define _OFF 0 300 /* 301 * Function types 302 */ 303 int beep(); 304 int qcount(); 305 int vchange(unsigned char); 306 int vdelete(unsigned char); 307 int vgrabit(); 308 int vinschar(); 309 int vmove(); 310 int vputchar(); 311 int vshift(); 312 int vyankit(); 313 314 #define FILLER 0177 /* fill positions for multibyte characters */ 315 316 #ifdef __cplusplus 317 } 318 #endif 319 320 #endif /* _EX_VIS_H */ 321