| 1 | /*- |
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| 2 | * Copyright (c) 1992, 1993, 1994 |
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| 3 | * The Regents of the University of California. All rights reserved. |
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| 4 | * Copyright (c) 1992, 1993, 1994, 1995, 1996 |
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| 5 | * Keith Bostic. All rights reserved. |
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| 6 | * |
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| 7 | * See the LICENSE file for redistribution information. |
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| 8 | * |
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| 9 | * @(#)screen.h 10.24 (Berkeley) 7/19/96 |
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| 10 | */ |
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| 11 | |
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| 12 | /* |
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| 13 | * There are minimum values that vi has to have to display a screen. The row |
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| 14 | * minimum is fixed at 1 (the svi code can share a line between the text line |
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| 15 | * and the colon command/message line). Column calculation is a lot trickier. |
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| 16 | * For example, you have to have enough columns to display the line number, |
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| 17 | * not to mention guaranteeing that tabstop and shiftwidth values are smaller |
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| 18 | * than the current column value. It's simpler to have a fixed value and not |
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| 19 | * worry about it. |
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| 20 | * |
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| 21 | * XXX |
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| 22 | * MINIMUM_SCREEN_COLS is almost certainly wrong. |
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| 23 | */ |
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| 24 | #define MINIMUM_SCREEN_ROWS 1 |
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| 25 | #define MINIMUM_SCREEN_COLS 20 |
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| 26 | |
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| 27 | /* |
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| 28 | * SCR -- |
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| 29 | * The screen structure. To the extent possible, all screen information |
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| 30 | * is stored in the various private areas. The only information here |
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| 31 | * is used by global routines or is shared by too many screens. |
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| 32 | */ |
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| 33 | struct _scr { |
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| 34 | /* INITIALIZED AT SCREEN CREATE. */ |
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| 35 | CIRCLEQ_ENTRY(_scr) q; /* Screens. */ |
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| 36 | |
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| 37 | int id; /* Screen id #. */ |
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| 38 | int refcnt; /* Reference count. */ |
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| 39 | |
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| 40 | GS *gp; /* Pointer to global area. */ |
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| 41 | SCR *nextdisp; /* Next display screen. */ |
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| 42 | SCR *ccl_parent; /* Colon command-line parent screen. */ |
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| 43 | EXF *ep; /* Screen's current EXF structure. */ |
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| 44 | |
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| 45 | FREF *frp; /* FREF being edited. */ |
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| 46 | char **argv; /* NULL terminated file name array. */ |
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| 47 | char **cargv; /* Current file name. */ |
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| 48 | |
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| 49 | u_long ccnt; /* Command count. */ |
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| 50 | u_long q_ccnt; /* Quit or ZZ command count. */ |
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| 51 | |
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| 52 | /* Screen's: */ |
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| 53 | size_t rows; /* 1-N: number of rows. */ |
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| 54 | size_t cols; /* 1-N: number of columns. */ |
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| 55 | size_t t_rows; /* 1-N: cur number of text rows. */ |
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| 56 | size_t t_maxrows; /* 1-N: max number of text rows. */ |
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| 57 | size_t t_minrows; /* 1-N: min number of text rows. */ |
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| 58 | size_t woff; /* 0-N: screen offset in frame. */ |
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| 59 | |
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| 60 | /* Cursor's: */ |
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| 61 | recno_t lno; /* 1-N: file line. */ |
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| 62 | size_t cno; /* 0-N: file character in line. */ |
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| 63 | |
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| 64 | size_t rcm; /* Vi: 0-N: Most attractive column. */ |
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| 65 | |
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| 66 | #define L_ADDED 0 /* Added lines. */ |
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| 67 | #define L_CHANGED 1 /* Changed lines. */ |
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| 68 | #define L_DELETED 2 /* Deleted lines. */ |
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| 69 | #define L_JOINED 3 /* Joined lines. */ |
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| 70 | #define L_MOVED 4 /* Moved lines. */ |
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| 71 | #define L_SHIFT 5 /* Shift lines. */ |
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| 72 | #define L_YANKED 6 /* Yanked lines. */ |
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| 73 | recno_t rptlchange; /* Ex/vi: last L_CHANGED lno. */ |
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| 74 | recno_t rptlines[L_YANKED + 1];/* Ex/vi: lines changed by last op. */ |
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| 75 | |
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| 76 | TEXTH tiq; /* Ex/vi: text input queue. */ |
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| 77 | |
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| 78 | SCRIPT *script; /* Vi: script mode information .*/ |
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| 79 | |
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| 80 | recno_t defscroll; /* Vi: ^D, ^U scroll information. */ |
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| 81 | |
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| 82 | /* Display character. */ |
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| 83 | CHAR_T cname[MAX_CHARACTER_COLUMNS + 1]; |
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| 84 | size_t clen; /* Length of display character. */ |
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| 85 | |
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| 86 | enum { /* Vi editor mode. */ |
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| 87 | SM_APPEND = 0, SM_CHANGE, SM_COMMAND, SM_INSERT, |
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| 88 | SM_REPLACE } showmode; |
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| 89 | |
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| 90 | void *ex_private; /* Ex private area. */ |
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| 91 | void *vi_private; /* Vi private area. */ |
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| 92 | void *perl_private; /* Perl private area. */ |
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| 93 | |
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| 94 | /* PARTIALLY OR COMPLETELY COPIED FROM PREVIOUS SCREEN. */ |
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| 95 | char *alt_name; /* Ex/vi: alternate file name. */ |
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| 96 | |
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| 97 | CHAR_T at_lbuf; /* Ex/vi: Last executed at buffer. */ |
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| 98 | |
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| 99 | /* Ex/vi: re_compile flags. */ |
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| 100 | #define RE_C_CSCOPE 0x0001 /* Compile cscope pattern. */ |
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| 101 | #define RE_C_SEARCH 0x0002 /* Compile search replacement. */ |
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| 102 | #define RE_C_SILENT 0x0004 /* No error messages. */ |
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| 103 | #define RE_C_SUBST 0x0008 /* Compile substitute replacement. */ |
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| 104 | #define RE_C_TAG 0x0010 /* Compile ctag pattern. */ |
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| 105 | |
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| 106 | #define RE_WSTART "[[:<:]]" /* Ex/vi: not-in-word search pattern. */ |
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| 107 | #define RE_WSTOP "[[:>:]]" |
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| 108 | /* Ex/vi: flags to search routines. */ |
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| 109 | #define SEARCH_CSCOPE 0x0001 /* Search for a cscope pattern. */ |
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| 110 | #define SEARCH_EOL 0x0002 /* Offset past EOL is okay. */ |
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| 111 | #define SEARCH_FILE 0x0004 /* Search the entire file. */ |
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| 112 | #define SEARCH_INCR 0x0008 /* Search incrementally. */ |
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| 113 | #define SEARCH_MSG 0x0010 /* Display search messages. */ |
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| 114 | #define SEARCH_PARSE 0x0020 /* Parse the search pattern. */ |
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| 115 | #define SEARCH_SET 0x0040 /* Set search direction. */ |
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| 116 | #define SEARCH_TAG 0x0080 /* Search for a tag pattern. */ |
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| 117 | #define SEARCH_WMSG 0x0100 /* Display search-wrapped messages. */ |
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| 118 | |
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| 119 | /* Ex/vi: RE information. */ |
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| 120 | dir_t searchdir; /* Last file search direction. */ |
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| 121 | regex_t re_c; /* Search RE: compiled form. */ |
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| 122 | char *re; /* Search RE: uncompiled form. */ |
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| 123 | size_t re_len; /* Search RE: uncompiled length. */ |
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| 124 | regex_t subre_c; /* Substitute RE: compiled form. */ |
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| 125 | char *subre; /* Substitute RE: uncompiled form. */ |
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| 126 | size_t subre_len; /* Substitute RE: uncompiled length). */ |
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| 127 | char *repl; /* Substitute replacement. */ |
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| 128 | size_t repl_len; /* Substitute replacement length.*/ |
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| 129 | size_t *newl; /* Newline offset array. */ |
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| 130 | size_t newl_len; /* Newline array size. */ |
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| 131 | size_t newl_cnt; /* Newlines in replacement. */ |
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| 132 | u_int8_t c_suffix; /* Edcompatible 'c' suffix value. */ |
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| 133 | u_int8_t g_suffix; /* Edcompatible 'g' suffix value. */ |
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| 134 | |
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| 135 | OPTION opts[O_OPTIONCOUNT]; /* Ex/vi: Options. */ |
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| 136 | |
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| 137 | /* |
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| 138 | * Screen flags. |
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| 139 | * |
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| 140 | * Editor screens. |
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| 141 | */ |
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| 142 | #define SC_EX 0x00000001 /* Ex editor. */ |
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| 143 | #define SC_VI 0x00000002 /* Vi editor. */ |
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| 144 | |
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| 145 | /* |
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| 146 | * Screen formatting flags, first major, then minor. |
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| 147 | * |
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| 148 | * SC_SCR_EX |
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| 149 | * Ex screen, i.e. cooked mode. |
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| 150 | * SC_SCR_VI |
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| 151 | * Vi screen, i.e. raw mode. |
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| 152 | * SC_SCR_EXWROTE |
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| 153 | * The editor had to write on the screen behind curses' back, and we can't |
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| 154 | * let curses change anything until the user agrees, e.g. entering the |
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| 155 | * commands :!utility followed by :set. We have to switch back into the |
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| 156 | * vi "editor" to read the user's command input, but we can't touch the |
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| 157 | * rest of the screen because it's known to be wrong. |
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| 158 | * SC_SCR_REFORMAT |
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| 159 | * The expected presentation of the lines on the screen have changed, |
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| 160 | * requiring that the intended screen lines be recalculated. Implies |
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| 161 | * SC_SCR_REDRAW. |
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| 162 | * SC_SCR_REDRAW |
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| 163 | * The screen doesn't correctly represent the file; repaint it. Note, |
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| 164 | * setting SC_SCR_REDRAW in the current window causes *all* windows to |
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| 165 | * be repainted. |
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| 166 | * SC_SCR_CENTER |
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| 167 | * If the current line isn't already on the screen, center it. |
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| 168 | * SC_SCR_TOP |
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| 169 | * If the current line isn't already on the screen, put it at the to@. |
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| 170 | */ |
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| 171 | #define SC_SCR_EX 0x00000004 /* Screen is in ex mode. */ |
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| 172 | #define SC_SCR_VI 0x00000008 /* Screen is in vi mode. */ |
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| 173 | #define SC_SCR_EXWROTE 0x00000010 /* Ex overwrite: see comment above. */ |
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| 174 | #define SC_SCR_REFORMAT 0x00000020 /* Reformat (refresh). */ |
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| 175 | #define SC_SCR_REDRAW 0x00000040 /* Refresh. */ |
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| 176 | |
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| 177 | #define SC_SCR_CENTER 0x00000080 /* Center the line if not visible. */ |
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| 178 | #define SC_SCR_TOP 0x00000100 /* Top the line if not visible. */ |
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| 179 | |
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| 180 | /* Screen/file changes. */ |
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| 181 | #define SC_EXIT 0x00000200 /* Exiting (not forced). */ |
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| 182 | #define SC_EXIT_FORCE 0x00000400 /* Exiting (forced). */ |
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| 183 | #define SC_FSWITCH 0x00000800 /* Switch underlying files. */ |
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| 184 | #define SC_SSWITCH 0x00001000 /* Switch screens. */ |
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| 185 | |
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| 186 | #define SC_ARGNOFREE 0x00002000 /* Argument list wasn't allocated. */ |
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| 187 | #define SC_ARGRECOVER 0x00004000 /* Argument list is recovery files. */ |
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| 188 | #define SC_AT_SET 0x00008000 /* Last at buffer set. */ |
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| 189 | #define SC_COMEDIT 0x00010000 /* Colon command-line edit window. */ |
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| 190 | #define SC_EX_GLOBAL 0x00020000 /* Ex: executing a global command. */ |
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| 191 | #define SC_EX_SILENT 0x00040000 /* Ex: batch script. */ |
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| 192 | #define SC_EX_WAIT_NO 0x00080000 /* Ex: don't wait for the user. */ |
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| 193 | #define SC_EX_WAIT_YES 0x00100000 /* Ex: do wait for the user. */ |
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| 194 | #define SC_READONLY 0x00200000 /* Persistent readonly state. */ |
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| 195 | #define SC_RE_SEARCH 0x00400000 /* Search RE has been compiled. */ |
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| 196 | #define SC_RE_SUBST 0x00800000 /* Substitute RE has been compiled. */ |
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| 197 | #define SC_SCRIPT 0x01000000 /* Shell script window. */ |
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| 198 | #define SC_STATUS 0x02000000 /* Welcome message. */ |
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| 199 | #define SC_STATUS_CNT 0x04000000 /* Welcome message plus file count. */ |
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| 200 | #define SC_TINPUT 0x08000000 /* Doing text input. */ |
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| 201 | #define SC_TINPUT_INFO 0x10000000 /* Doing text input on info line. */ |
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| 202 | u_int32_t flags; |
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| 203 | }; |
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