1/* $NetBSD: screen.h,v 1.3 2013/11/25 22:43:46 christos Exp $ */ 2/*- 3 * Copyright (c) 1992, 1993, 1994 4 * The Regents of the University of California. All rights reserved. 5 * Copyright (c) 1992, 1993, 1994, 1995, 1996 6 * Keith Bostic. All rights reserved. 7 * 8 * See the LICENSE file for redistribution information. 9 * 10 * Id: screen.h,v 10.49 2002/03/02 23:47:02 skimo Exp (Berkeley) Date: 2002/03/02 23:47:02 11 */ 12 13/* 14 * There are minimum values that vi has to have to display a screen. The row 15 * minimum is fixed at 1 (the svi code can share a line between the text line 16 * and the colon command/message line). Column calculation is a lot trickier. 17 * For example, you have to have enough columns to display the line number, 18 * not to mention guaranteeing that tabstop and shiftwidth values are smaller 19 * than the current column value. It's simpler to have a fixed value and not 20 * worry about it. 21 * 22 * XXX 23 * MINIMUM_SCREEN_COLS is almost certainly wrong. 24 */ 25#define MINIMUM_SCREEN_ROWS 1 26#define MINIMUM_SCREEN_COLS 20 27 28/* 29 * WIN -- 30 * A list of screens that are displayed as a whole. 31 */ 32struct _win { 33 TAILQ_ENTRY(_win) q; /* Windows. */ 34 35 TAILQ_HEAD(_scrh, _scr) scrq; /* Screens */ 36 37 GS *gp; /* Pointer to global area. */ 38 39 SCR *ccl_sp; /* Colon command-line screen. */ 40 41 void *perl_private; /* Perl interpreter. */ 42 43 void *ip_private; /* IP support private area. */ 44 45 void *th_private; /* Threading support private area. */ 46 47 /* 48 * Ex command structures (EXCMD). Defined here because ex commands 49 * exist outside of any particular screen or file. 50 */ 51#define EXCMD_RUNNING(wp) ((wp)->ecq.lh_first->clen != 0) 52 LIST_HEAD(_excmdh, _excmd) ecq; /* Ex command linked list. */ 53 EXCMD excmd; /* Default ex command structure. */ 54 char *if_name; /* Current associated file. */ 55 db_recno_t if_lno; /* Current associated line number. */ 56 57 EVENT *i_event; /* Array of input events. */ 58 size_t i_nelem; /* Number of array elements. */ 59 size_t i_cnt; /* Count of events. */ 60 size_t i_next; /* Offset of next event. */ 61 62 CB *dcbp; /* Default cut buffer pointer. */ 63 CB dcb_store; /* Default cut buffer storage. */ 64 LIST_HEAD(_cuth, _cb) cutq; /* Linked list of cut buffers. */ 65 66 /* For now, can be either char or CHAR_T buffer */ 67 char *tmp_bp; /* Temporary buffer. */ 68 size_t tmp_blen; /* Temporary buffer size. */ 69 70 char *l_lp; /* Log buffer. */ 71 size_t l_len; /* Log buffer length. */ 72 73 CONVWIN cw; 74 75/* Flags. */ 76#define W_TMP_INUSE 0x0001 /* Temporary buffer in use. */ 77 u_int32_t flags; 78 79 /* Message or ex output. */ 80 void (*scr_msg) __P((SCR *, mtype_t, char *, size_t)); 81}; 82 83/* 84 * SCR -- 85 * The screen structure. To the extent possible, all screen information 86 * is stored in the various private areas. The only information here 87 * is used by global routines or is shared by too many screens. 88 */ 89struct _scr { 90/* INITIALIZED AT SCREEN CREATE. */ 91 TAILQ_ENTRY(_scr) q; /* Screens. */ 92 TAILQ_ENTRY(_scr) eq; /* Screens. */ 93 94 int id; /* Screen id #. */ 95 int refcnt; /* Reference count. */ 96 97 WIN *wp; /* Pointer to window. */ 98 GS *gp; /* Pointer to global area. */ 99 SCR *nextdisp; /* Next display screen. */ 100 SCR *ccl_parent; /* Colon command-line parent screen. */ 101 EXF *ep; /* Screen's current EXF structure. */ 102 103 CHAR_T *c_lp; /* Cached line. */ 104 size_t c_len; /* Cached line length. */ 105 /* May move out again once we use DB 106 * to cache internal representation 107 */ 108 size_t c_blen; /* Cached line buffer length. */ 109 db_recno_t c_lno; /* Cached line number. */ 110 111 FREF *frp; /* FREF being edited. */ 112 char **argv; /* NULL terminated file name array. */ 113 char **cargv; /* Current file name. */ 114 115 u_long ccnt; /* Command count. */ 116 u_long q_ccnt; /* Quit or ZZ command count. */ 117 118 /* Screen's: */ 119 size_t rows; /* 1-N: number of rows. */ 120 size_t cols; /* 1-N: number of columns. */ 121 size_t t_rows; /* 1-N: cur number of text rows. */ 122 size_t t_maxrows; /* 1-N: max number of text rows. */ 123 size_t t_minrows; /* 1-N: min number of text rows. */ 124 size_t coff; /* 0-N: screen col offset in display. */ 125 size_t roff; /* 0-N: screen row offset in display. */ 126 127 /* Cursor's: */ 128 db_recno_t lno; /* 1-N: file line. */ 129 size_t cno; /* 0-N: file character in line. */ 130 131 size_t rcm; /* Vi: 0-N: Most attractive column. */ 132 133#define L_ADDED 0 /* Added lines. */ 134#define L_CHANGED 1 /* Changed lines. */ 135#define L_DELETED 2 /* Deleted lines. */ 136#define L_JOINED 3 /* Joined lines. */ 137#define L_MOVED 4 /* Moved lines. */ 138#define L_SHIFT 5 /* Shift lines. */ 139#define L_YANKED 6 /* Yanked lines. */ 140 db_recno_t rptlchange; /* Ex/vi: last L_CHANGED lno. */ 141 db_recno_t rptlines[L_YANKED + 1];/* Ex/vi: lines changed by last op. */ 142 143 TEXTH tiq; /* Ex/vi: text input queue. */ 144 145 SCRIPT *script; /* Vi: script mode information .*/ 146 147 db_recno_t defscroll; /* Vi: ^D, ^U scroll information. */ 148 149 /* Display character. */ 150 u_char cname[MAX_CHARACTER_COLUMNS + 1]; 151 size_t clen; /* Length of display character. */ 152 153 enum { /* Vi editor mode. */ 154 SM_APPEND = 0, SM_CHANGE, SM_COMMAND, SM_INSERT, 155 SM_REPLACE } showmode; 156 157 void *ex_private; /* Ex private area. */ 158 void *vi_private; /* Vi private area. */ 159 void *perl_private; /* Perl private area. */ 160 void *cl_private; /* Curses private area. */ 161 162 CONV conv; 163 164 struct _log_state state; /* State during log traversal. */ 165 166/* PARTIALLY OR COMPLETELY COPIED FROM PREVIOUS SCREEN. */ 167 char *alt_name; /* Ex/vi: alternate file name. */ 168 169 ARG_CHAR_T at_lbuf; /* Ex/vi: Last executed at buffer. */ 170 171 /* Ex/vi: re_compile flags. */ 172#define RE_WSTART L("[[:<:]]") /* Ex/vi: not-in-word search pattern. */ 173#define RE_WSTOP L("[[:>:]]") 174#define RE_WSTART_LEN (sizeof(RE_WSTART)/sizeof(CHAR_T)-1) 175#define RE_WSTOP_LEN (sizeof(RE_WSTOP)/sizeof(CHAR_T)-1) 176 /* Ex/vi: flags to search routines. */ 177#define SEARCH_CSCOPE 0x000001 /* Search for a cscope pattern. */ 178#define SEARCH_CSEARCH 0x000002 /* Compile search replacement. */ 179#define SEARCH_CSUBST 0x000004 /* Compile substitute replacement. */ 180#define SEARCH_EOL 0x000008 /* Offset past EOL is okay. */ 181#define SEARCH_EXTEND 0x000010 /* Extended RE. */ 182#define SEARCH_FIRST 0x000020 /* Search from the first line. */ 183#define SEARCH_IC 0x000040 /* Ignore case. */ 184#define SEARCH_ICL 0x000080 /* Ignore case. */ 185#define SEARCH_INCR 0x000100 /* Search incrementally. */ 186#define SEARCH_LITERAL 0x000200 /* Literal string. */ 187#define SEARCH_MSG 0x000400 /* Display search messages. */ 188#define SEARCH_NOOPT 0x000800 /* Ignore edit options. */ 189#define SEARCH_PARSE 0x001000 /* Parse the search pattern. */ 190#define SEARCH_SET 0x002000 /* Set search direction. */ 191#define SEARCH_TAG 0x004000 /* Search for a tag pattern. */ 192#define SEARCH_WMSG 0x008000 /* Display search-wrapped messages. */ 193#define SEARCH_WRAP 0x010000 /* Wrap past sof/eof. */ 194 195 /* Ex/vi: RE information. */ 196 dir_t searchdir; /* Last file search direction. */ 197 regex_t re_c; /* Search RE: compiled form. */ 198 CHAR_T *re; /* Search RE: uncompiled form. */ 199 size_t re_len; /* Search RE: uncompiled length. */ 200 regex_t subre_c; /* Substitute RE: compiled form. */ 201 CHAR_T *subre; /* Substitute RE: uncompiled form. */ 202 size_t subre_len; /* Substitute RE: uncompiled length). */ 203 CHAR_T *repl; /* Substitute replacement. */ 204 size_t repl_len; /* Substitute replacement length.*/ 205 size_t *newl; /* Newline offset array. */ 206 size_t newl_len; /* Newline array size. */ 207 size_t newl_cnt; /* Newlines in replacement. */ 208 u_int8_t c_suffix; /* Edcompatible 'c' suffix value. */ 209 u_int8_t g_suffix; /* Edcompatible 'g' suffix value. */ 210 211 OPTION opts[O_OPTIONCOUNT]; /* Ex/vi: Options. */ 212 213/* 214 * Screen flags. 215 * 216 * Editor screens. 217 */ 218#define SC_EX 0x00000001 /* Ex editor. */ 219#define SC_VI 0x00000002 /* Vi editor. */ 220 221/* 222 * Screen formatting flags, first major, then minor. 223 * 224 * SC_SCR_EX 225 * Ex screen, i.e. cooked mode. 226 * SC_SCR_VI 227 * Vi screen, i.e. raw mode. 228 * SC_SCR_EXWROTE 229 * The editor had to write on the screen behind curses' back, and we can't 230 * let curses change anything until the user agrees, e.g. entering the 231 * commands :!utility followed by :set. We have to switch back into the 232 * vi "editor" to read the user's command input, but we can't touch the 233 * rest of the screen because it's known to be wrong. 234 * SC_SCR_REFORMAT 235 * The expected presentation of the lines on the screen have changed, 236 * requiring that the intended screen lines be recalculated. Implies 237 * SC_SCR_REDRAW. 238 * SC_SCR_REDRAW 239 * The screen doesn't correctly represent the file; repaint it. Note, 240 * setting SC_SCR_REDRAW in the current window causes *all* windows to 241 * be repainted. 242 * SC_SCR_CENTER 243 * If the current line isn't already on the screen, center it. 244 * SC_SCR_TOP 245 * If the current line isn't already on the screen, put it at the to@. 246 */ 247#define SC_SCR_EX 0x00000004 /* Screen is in ex mode. */ 248#define SC_SCR_VI 0x00000008 /* Screen is in vi mode. */ 249#define SC_SCR_EXWROTE 0x00000010 /* Ex overwrite: see comment above. */ 250#define SC_SCR_REFORMAT 0x00000020 /* Reformat (refresh). */ 251#define SC_SCR_REDRAW 0x00000040 /* Refresh. */ 252 253#define SC_SCR_CENTER 0x00000080 /* Center the line if not visible. */ 254#define SC_SCR_TOP 0x00000100 /* Top the line if not visible. */ 255 256/* Screen/file changes. */ 257#define SC_EXIT 0x00000200 /* Exiting (not forced). */ 258#define SC_EXIT_FORCE 0x00000400 /* Exiting (forced). */ 259#define SC_FSWITCH 0x00000800 /* Switch underlying files. */ 260#define SC_SSWITCH 0x00001000 /* Switch screens. */ 261 262#define SC_ARGNOFREE 0x00002000 /* Argument list wasn't allocated. */ 263#define SC_ARGRECOVER 0x00004000 /* Argument list is recovery files. */ 264#define SC_AT_SET 0x00008000 /* Last at buffer set. */ 265#define SC_COMEDIT 0x00010000 /* Colon command-line edit window. */ 266#define SC_EX_GLOBAL 0x00020000 /* Ex: executing a global command. */ 267#define SC_EX_SILENT 0x00040000 /* Ex: batch script. */ 268#define SC_EX_WAIT_NO 0x00080000 /* Ex: don't wait for the user. */ 269#define SC_EX_WAIT_YES 0x00100000 /* Ex: do wait for the user. */ 270#define SC_READONLY 0x00200000 /* Persistent readonly state. */ 271#define SC_RE_SEARCH 0x00400000 /* Search RE has been compiled. */ 272#define SC_RE_SUBST 0x00800000 /* Substitute RE has been compiled. */ 273#define SC_SCRIPT 0x01000000 /* Shell script window. */ 274#define SC_STATUS 0x02000000 /* Welcome message. */ 275#define SC_STATUS_CNT 0x04000000 /* Welcome message plus file count. */ 276#define SC_TINPUT 0x08000000 /* Doing text input. */ 277#define SC_TINPUT_INFO 0x10000000 /* Doing text input on info line. */ 278#define SC_CONV_ERROR 0x20000000 /* Met with a conversion error. */ 279 u_int32_t flags; 280 281 int db_error; /* Return code from db function. */ 282}; 283