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Diffstat (limited to 'contrib/nvi/common/screen.h')
| -rw-r--r-- | contrib/nvi/common/screen.h | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/contrib/nvi/common/screen.h b/contrib/nvi/common/screen.h new file mode 100644 index 0000000..bb7254f --- /dev/null +++ b/contrib/nvi/common/screen.h @@ -0,0 +1,203 @@ +/*- + * Copyright (c) 1992, 1993, 1994 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1992, 1993, 1994, 1995, 1996 + * Keith Bostic. All rights reserved. + * + * See the LICENSE file for redistribution information. + * + * @(#)screen.h 10.24 (Berkeley) 7/19/96 + */ + +/* + * There are minimum values that vi has to have to display a screen. The row + * minimum is fixed at 1 (the svi code can share a line between the text line + * and the colon command/message line). Column calculation is a lot trickier. + * For example, you have to have enough columns to display the line number, + * not to mention guaranteeing that tabstop and shiftwidth values are smaller + * than the current column value. It's simpler to have a fixed value and not + * worry about it. + * + * XXX + * MINIMUM_SCREEN_COLS is almost certainly wrong. + */ +#define MINIMUM_SCREEN_ROWS 1 +#define MINIMUM_SCREEN_COLS 20 + +/* + * SCR -- + * The screen structure. To the extent possible, all screen information + * is stored in the various private areas. The only information here + * is used by global routines or is shared by too many screens. + */ +struct _scr { +/* INITIALIZED AT SCREEN CREATE. */ + CIRCLEQ_ENTRY(_scr) q; /* Screens. */ + + int id; /* Screen id #. */ + int refcnt; /* Reference count. */ + + GS *gp; /* Pointer to global area. */ + SCR *nextdisp; /* Next display screen. */ + SCR *ccl_parent; /* Colon command-line parent screen. */ + EXF *ep; /* Screen's current EXF structure. */ + + FREF *frp; /* FREF being edited. */ + char **argv; /* NULL terminated file name array. */ + char **cargv; /* Current file name. */ + + u_long ccnt; /* Command count. */ + u_long q_ccnt; /* Quit or ZZ command count. */ + + /* Screen's: */ + size_t rows; /* 1-N: number of rows. */ + size_t cols; /* 1-N: number of columns. */ + size_t t_rows; /* 1-N: cur number of text rows. */ + size_t t_maxrows; /* 1-N: max number of text rows. */ + size_t t_minrows; /* 1-N: min number of text rows. */ + size_t woff; /* 0-N: screen offset in frame. */ + + /* Cursor's: */ + recno_t lno; /* 1-N: file line. */ + size_t cno; /* 0-N: file character in line. */ + + size_t rcm; /* Vi: 0-N: Most attractive column. */ + +#define L_ADDED 0 /* Added lines. */ +#define L_CHANGED 1 /* Changed lines. */ +#define L_DELETED 2 /* Deleted lines. */ +#define L_JOINED 3 /* Joined lines. */ +#define L_MOVED 4 /* Moved lines. */ +#define L_SHIFT 5 /* Shift lines. */ +#define L_YANKED 6 /* Yanked lines. */ + recno_t rptlchange; /* Ex/vi: last L_CHANGED lno. */ + recno_t rptlines[L_YANKED + 1];/* Ex/vi: lines changed by last op. */ + + TEXTH tiq; /* Ex/vi: text input queue. */ + + SCRIPT *script; /* Vi: script mode information .*/ + + recno_t defscroll; /* Vi: ^D, ^U scroll information. */ + + /* Display character. */ + CHAR_T cname[MAX_CHARACTER_COLUMNS + 1]; + size_t clen; /* Length of display character. */ + + enum { /* Vi editor mode. */ + SM_APPEND = 0, SM_CHANGE, SM_COMMAND, SM_INSERT, + SM_REPLACE } showmode; + + void *ex_private; /* Ex private area. */ + void *vi_private; /* Vi private area. */ + void *perl_private; /* Perl private area. */ + +/* PARTIALLY OR COMPLETELY COPIED FROM PREVIOUS SCREEN. */ + char *alt_name; /* Ex/vi: alternate file name. */ + + CHAR_T at_lbuf; /* Ex/vi: Last executed at buffer. */ + + /* Ex/vi: re_compile flags. */ +#define RE_C_CSCOPE 0x0001 /* Compile cscope pattern. */ +#define RE_C_SEARCH 0x0002 /* Compile search replacement. */ +#define RE_C_SILENT 0x0004 /* No error messages. */ +#define RE_C_SUBST 0x0008 /* Compile substitute replacement. */ +#define RE_C_TAG 0x0010 /* Compile ctag pattern. */ + +#define RE_WSTART "[[:<:]]" /* Ex/vi: not-in-word search pattern. */ +#define RE_WSTOP "[[:>:]]" + /* Ex/vi: flags to search routines. */ +#define SEARCH_CSCOPE 0x0001 /* Search for a cscope pattern. */ +#define SEARCH_EOL 0x0002 /* Offset past EOL is okay. */ +#define SEARCH_FILE 0x0004 /* Search the entire file. */ +#define SEARCH_INCR 0x0008 /* Search incrementally. */ +#define SEARCH_MSG 0x0010 /* Display search messages. */ +#define SEARCH_PARSE 0x0020 /* Parse the search pattern. */ +#define SEARCH_SET 0x0040 /* Set search direction. */ +#define SEARCH_TAG 0x0080 /* Search for a tag pattern. */ +#define SEARCH_WMSG 0x0100 /* Display search-wrapped messages. */ + + /* Ex/vi: RE information. */ + dir_t searchdir; /* Last file search direction. */ + regex_t re_c; /* Search RE: compiled form. */ + char *re; /* Search RE: uncompiled form. */ + size_t re_len; /* Search RE: uncompiled length. */ + regex_t subre_c; /* Substitute RE: compiled form. */ + char *subre; /* Substitute RE: uncompiled form. */ + size_t subre_len; /* Substitute RE: uncompiled length). */ + char *repl; /* Substitute replacement. */ + size_t repl_len; /* Substitute replacement length.*/ + size_t *newl; /* Newline offset array. */ + size_t newl_len; /* Newline array size. */ + size_t newl_cnt; /* Newlines in replacement. */ + u_int8_t c_suffix; /* Edcompatible 'c' suffix value. */ + u_int8_t g_suffix; /* Edcompatible 'g' suffix value. */ + + OPTION opts[O_OPTIONCOUNT]; /* Ex/vi: Options. */ + +/* + * Screen flags. + * + * Editor screens. + */ +#define SC_EX 0x00000001 /* Ex editor. */ +#define SC_VI 0x00000002 /* Vi editor. */ + +/* + * Screen formatting flags, first major, then minor. + * + * SC_SCR_EX + * Ex screen, i.e. cooked mode. + * SC_SCR_VI + * Vi screen, i.e. raw mode. + * SC_SCR_EXWROTE + * The editor had to write on the screen behind curses' back, and we can't + * let curses change anything until the user agrees, e.g. entering the + * commands :!utility followed by :set. We have to switch back into the + * vi "editor" to read the user's command input, but we can't touch the + * rest of the screen because it's known to be wrong. + * SC_SCR_REFORMAT + * The expected presentation of the lines on the screen have changed, + * requiring that the intended screen lines be recalculated. Implies + * SC_SCR_REDRAW. + * SC_SCR_REDRAW + * The screen doesn't correctly represent the file; repaint it. Note, + * setting SC_SCR_REDRAW in the current window causes *all* windows to + * be repainted. + * SC_SCR_CENTER + * If the current line isn't already on the screen, center it. + * SC_SCR_TOP + * If the current line isn't already on the screen, put it at the to@. + */ +#define SC_SCR_EX 0x00000004 /* Screen is in ex mode. */ +#define SC_SCR_VI 0x00000008 /* Screen is in vi mode. */ +#define SC_SCR_EXWROTE 0x00000010 /* Ex overwrite: see comment above. */ +#define SC_SCR_REFORMAT 0x00000020 /* Reformat (refresh). */ +#define SC_SCR_REDRAW 0x00000040 /* Refresh. */ + +#define SC_SCR_CENTER 0x00000080 /* Center the line if not visible. */ +#define SC_SCR_TOP 0x00000100 /* Top the line if not visible. */ + +/* Screen/file changes. */ +#define SC_EXIT 0x00000200 /* Exiting (not forced). */ +#define SC_EXIT_FORCE 0x00000400 /* Exiting (forced). */ +#define SC_FSWITCH 0x00000800 /* Switch underlying files. */ +#define SC_SSWITCH 0x00001000 /* Switch screens. */ + +#define SC_ARGNOFREE 0x00002000 /* Argument list wasn't allocated. */ +#define SC_ARGRECOVER 0x00004000 /* Argument list is recovery files. */ +#define SC_AT_SET 0x00008000 /* Last at buffer set. */ +#define SC_COMEDIT 0x00010000 /* Colon command-line edit window. */ +#define SC_EX_GLOBAL 0x00020000 /* Ex: executing a global command. */ +#define SC_EX_SILENT 0x00040000 /* Ex: batch script. */ +#define SC_EX_WAIT_NO 0x00080000 /* Ex: don't wait for the user. */ +#define SC_EX_WAIT_YES 0x00100000 /* Ex: do wait for the user. */ +#define SC_READONLY 0x00200000 /* Persistent readonly state. */ +#define SC_RE_SEARCH 0x00400000 /* Search RE has been compiled. */ +#define SC_RE_SUBST 0x00800000 /* Substitute RE has been compiled. */ +#define SC_SCRIPT 0x01000000 /* Shell script window. */ +#define SC_STATUS 0x02000000 /* Welcome message. */ +#define SC_STATUS_CNT 0x04000000 /* Welcome message plus file count. */ +#define SC_TINPUT 0x08000000 /* Doing text input. */ +#define SC_TINPUT_INFO 0x10000000 /* Doing text input on info line. */ + u_int32_t flags; +}; |
