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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 27 /* All Rights Reserved */ 28 29 30 /* Copyright (c) 1981 Regents of the University of California */ 31 32 #ifndef _EX_VIS_H 33 #define _EX_VIS_H 34 35 #ifdef __cplusplus 36 extern "C" { 37 #endif 38 39 /* 40 * Ex version 3 41 * 42 * Open and visual mode definitions. 43 * 44 * There are actually 4 major states in open/visual modes. These 45 * are visual, crt open (where the cursor can move about the screen and 46 * the screen can scroll and be erased), one line open (on dumb glass-crt's 47 * like the adm3), and hardcopy open (for everything else). 48 * 49 * The basic state is given by bastate, and the current state by state, 50 * since we can be in pseudo-hardcopy mode if we are on an adm3 and the 51 * line is longer than 80. 52 */ 53 54 var short bastate; 55 var short state; 56 57 #define VISUAL 0 58 #define CRTOPEN 1 59 #define ONEOPEN 2 60 #define HARDOPEN 3 61 62 /* 63 * The screen in visual and crtopen is of varying size; the basic 64 * window has top basWTOP and basWLINES lines are thereby implied. 65 * The current window (which may have grown from the basic size) 66 * has top WTOP and WLINES lines. The top line of the window is WTOP, 67 * and the bottom line WBOT. The line WECHO is used for messages, 68 * search strings and the like. If WBOT==WECHO then we are in ONEOPEN 69 * or HARDOPEN and there is no way back to the line we were on if we 70 * go to WECHO (i.e. we will have to scroll before we go there, and 71 * we can't get back). There are WCOLS columns per line. 72 * If WBOT!=WECHO then WECHO will be the last line on the screen 73 * and WBOT is the line before it. 74 */ 75 var short basWTOP; 76 var short basWLINES; 77 var short WTOP; 78 var short WBOT; 79 var short WLINES; 80 var short WCOLS; 81 var short WECHO; 82 83 /* 84 * When we are dealing with the echo area we consider the window 85 * to be "split" and set the variable splitw. Otherwise, moving 86 * off the bottom of the screen into WECHO causes a screen rollup. 87 */ 88 var bool splitw; 89 90 /* 91 * Information about each line currently on the screen includes 92 * the y coordinate associated with the line, the printing depth 93 * of the line (0 indicates unknown), and a mask which indicates 94 * whether the line is "unclean", i.e. whether we should check 95 * to make sure the line is displayed correctly at the next 96 * appropriate juncture. 97 */ 98 struct vlinfo { 99 short vliny; /* Y coordinate */ /* was char */ 100 short vdepth; /* Depth of displayed line */ /* was char */ 101 short vflags; /* Is line potentially dirty ? */ 102 }; 103 var struct vlinfo vlinfo[TUBELINES + 2]; 104 105 #define DEPTH(c) (vlinfo[c].vdepth) 106 #define LINE(c) (vlinfo[c].vliny) 107 #define FLAGS(c) (vlinfo[c].vflags) 108 109 #define VDIRT 1 110 111 /* 112 * Hacks to copy vlinfo structures around 113 */ 114 #ifdef V6 115 /* Kludge to make up for no structure assignment */ 116 struct { 117 long longi; 118 }; 119 #define vlcopy(i, j) i.longi = j.longi 120 #else 121 #define vlcopy(i, j) i = j; 122 #endif 123 124 /* 125 * The current line on the screen is represented by vcline. 126 * There are vcnt lines on the screen, the last being "vcnt - 1". 127 * Vcline is intimately tied to the current value of dot, 128 * and when command mode is used as a subroutine fancy footwork occurs. 129 */ 130 var short vcline; 131 var short vcnt; 132 133 /* 134 * To allow many optimizations on output, an exact image of the terminal 135 * screen is maintained in the space addressed by vtube0. The vtube 136 * array indexes this space as lines, and is shuffled on scrolls, insert+delete 137 * lines and the like rather than (more expensively) shuffling the screen 138 * data itself. It is also rearranged during insert mode across line 139 * boundaries to make incore work easier. 140 */ 141 var wchar_t *vtube[TUBELINES]; 142 var wchar_t *vtube0; 143 144 /* 145 * The current cursor position within the current line is kept in 146 * cursor. The current line is kept in linebuf. During insertions 147 * we use the auxiliary array genbuf as scratch area. 148 * The cursor wcursor and wdot are used in operations within/spanning 149 * lines to mark the other end of the affected area, or the target 150 * for a motion. 151 */ 152 var unsigned char *cursor; 153 var unsigned char *wcursor; 154 var line *wdot; 155 156 /* 157 * Undo information is saved in a LBSIZE buffer at "vutmp" for changes 158 * within the current line, or as for command mode for multi-line changes 159 * or changes on lines no longer the current line. 160 * The change kind "VCAPU" is used immediately after a U undo to prevent 161 * two successive U undo's from destroying the previous state. 162 */ 163 #define VNONE 0 164 #define VCHNG 1 165 #define VMANY 2 166 #define VCAPU 3 167 #define VMCHNG 4 168 #define VMANYINS 5 169 170 var short vundkind; /* Which kind of undo - from above */ 171 var unsigned char *vutmp; /* Prev line image when "VCHNG" */ 172 173 /* 174 * State information for undoing of macros. The basic idea is that 175 * if the macro does only 1 change or even none, we don't treat it 176 * specially. If it does 2 or more changes we want to be able to 177 * undo it as a unit. We remember how many changes have been made 178 * within the current macro. (Remember macros can be nested.) 179 */ 180 #define VC_NOTINMAC 0 /* Not in a macro */ 181 #define VC_NOCHANGE 1 /* In a macro, no changes so far */ 182 #define VC_ONECHANGE 2 /* In a macro, one change so far */ 183 #define VC_MANYCHANGE 3 /* In a macro, at least 2 changes so far */ 184 185 var short vch_mac; /* Change state - one of the above */ 186 187 /* 188 * For U undo's the line is grabbed by "vmove" after it first appears 189 * on that line. The "vUNDdot" which specifies which line has been 190 * saved is selectively cleared when changes involving other lines 191 * are made, i.e. after a 'J' join. This is because a 'JU' would 192 * lose completely the text of the line just joined on. 193 */ 194 var unsigned char *vUNDcurs; /* Cursor just before 'U' */ 195 var line *vUNDdot; /* The line address of line saved in vUNDsav */ 196 var line vUNDsav; /* Grabbed initial "*dot" */ 197 198 #define killU() vUNDdot = NOLINE 199 200 /* 201 * There are a number of cases where special behaviour is needed 202 * from deeply nested routines. This is accomplished by setting 203 * the bits of hold, which acts to change the state of the general 204 * visual editing behaviour in specific ways. 205 * 206 * HOLDAT prevents the clreol (clear to end of line) routines from 207 * putting out @'s or ~'s on empty lines. 208 * 209 * HOLDDOL prevents the reopen routine from putting a '$' at the 210 * end of a reopened line in list mode (for hardcopy mode, e.g.). 211 * 212 * HOLDROL prevents spurious blank lines when scrolling in hardcopy 213 * open mode. 214 * 215 * HOLDQIK prevents the fake insert mode during repeated commands. 216 * 217 * HOLDPUPD prevents updating of the physical screen image when 218 * mucking around while in insert mode. 219 * 220 * HOLDECH prevents clearing of the echo area while rolling the screen 221 * backwards (e.g.) in deference to the clearing of the area at the 222 * end of the scroll (1 time instead of n times). The fact that this 223 * is actually needed is recorded in heldech, which says that a clear 224 * of the echo area was actually held off. 225 */ 226 var short hold; 227 var short holdupd; /* Hold off update when echo line is too long */ 228 229 #define HOLDAT 1 230 #define HOLDDOL 2 231 #define HOLDROL 4 232 #define HOLDQIK 8 233 #define HOLDPUPD 16 234 #define HOLDECH 32 235 #define HOLDWIG 64 236 237 /* 238 * Miscellaneous variables 239 */ 240 var short CDCNT; /* Count of ^D's in insert on this line */ 241 var unsigned char DEL[VBSIZE+1]; /* Last deleted text */ 242 var bool HADUP; /* This insert line started with ^ then ^D */ 243 var bool HADZERO; /* This insert line started with 0 then ^D */ 244 var unsigned char INS[VBSIZE+1]; /* Last inserted text */ 245 var int Vlines; /* Number of file lines "before" vi command */ 246 var int Xcnt; /* External variable holding last cmd's count */ 247 var bool Xhadcnt; /* Last command had explicit count? */ 248 var short ZERO; 249 var short dir; /* Direction for search (+1 or -1) */ 250 var short doomed; /* Disply chars right of cursor to be killed */ 251 var bool gobblebl; /* Wrapmargin space generated nl, eat a space */ 252 var bool hadcnt; /* (Almost) internal to vmain() */ 253 var bool heldech; /* We owe a clear of echo area */ 254 var bool insmode; /* Are in character insert mode */ 255 var unsigned char lastcmd[5]; /* Chars in last command */ 256 var int lastcnt; /* Count for last command */ 257 var unsigned char *lastcp; /* Save current command here to repeat */ 258 var bool lasthad; /* Last command had a count? */ 259 var short lastvgk; /* Previous input key, if not from keyboard */ 260 var short lastreg; /* Register with last command */ 261 var unsigned char *ncols['z'-'a'+2]; /* Cursor positions of marks */ 262 var unsigned char *notenam; /* Name to be noted with change count */ 263 var unsigned char *notesgn; /* Change count from last command */ 264 var unsigned char op; /* Operation of current command */ 265 var int Peekkey; /* Peek ahead key */ 266 var bool rubble; /* Line is filthy (in hardcopy open), redraw! */ 267 var int vSCROLL; /* Number lines to scroll on ^D/^U */ 268 var unsigned char *vglobp; /* Untyped input (e.g. repeat insert text) */ 269 var unsigned char vmacbuf[VBSIZE]; /* Text of visual macro, hence nonnestable */ 270 var unsigned char *vmacp; /* Like vglobp but for visual macros */ 271 var unsigned char *vmcurs; /* Cursor for restore after undo d), e.g. */ 272 var short vmovcol; /* Column to try to keep on arrow keys */ 273 var bool vmoving; /* Are trying to keep vmovcol */ 274 var short vreg; /* Reg for this command */ /* mjm: was char */ 275 var short wdkind; /* Liberal/conservative words? */ 276 var unsigned char workcmd[5]; /* Temporary for lastcmd */ 277 var bool rewrite; 278 #ifdef XPG4 279 var int P_cursor_offset; /* cursor adjust for Put */ 280 #endif 281 #ifndef PRESUNEUC 282 var unsigned char wcharfiller; /* Right margin filler for wide char */ 283 #endif /* PRESUNEUC */ 284 285 286 /* 287 * Macros 288 */ 289 #define INF 30000 290 #define LASTLINE LINE(vcnt) 291 #define beep obeep 292 #define cindent() ((outline - vlinfo[vcline].vliny) * WCOLS + outcol) 293 #define vputp(cp, cnt) tputs(cp, cnt, vputch) 294 #define vputc(c) putch(c) 295 #define _ON 1 296 #define _OFF 0 297 /* 298 * Function types 299 */ 300 int any(); 301 int beep(); 302 void fixundo(void); 303 int qcount(); 304 int vchange(unsigned char); 305 int vdelete(unsigned char); 306 int vgrabit(); 307 int vinschar(); 308 int vmove(); 309 int vputchar(); 310 int vshift(); 311 int vyankit(); 312 313 #define FILLER 0177 /* fill positions for multibyte characters */ 314 315 #ifdef __cplusplus 316 } 317 #endif 318 319 #endif /* _EX_VIS_H */ 320