/*-
* 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.
*
* $Id: screen.h,v 10.26 2011/12/12 22:31:36 zy Exp $
*/
/*
* 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. */
TAILQ_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 coff; /* 0-N: screen col offset in display. */
size_t roff; /* 0-N: screen row offset in display. */
/* 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[1]; /* Ex/vi: text input queue. */
SCRIPT *script; /* Vi: script mode information .*/
recno_t defscroll; /* Vi: ^D, ^U scroll information. */
/* Display character. */
char cname[MAX_CHARACTER_COLUMNS + 1];
size_t clen; /* Length of display character. */
ARG_CHAR_T lastc; /* The last 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 *cl_private; /* Curses private area. */
CONV conv; /* Conversion functions. */
CONVWIN cw; /* Conversion buffer. */
/* 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 L("[[:<:]]") /* Ex/vi: not-in-word search pattern. */
#define RE_WSTOP L("[[:>:]]")
#define RE_WSTART_LEN (SIZE(RE_WSTART) - 1)
#define RE_WSTOP_LEN (SIZE(RE_WSTOP) - 1)
/* 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_T *re; /* Search RE: uncompiled form. */
size_t re_len; /* Search RE: uncompiled length. */
regex_t subre_c; /* Substitute RE: compiled form. */
CHAR_T *subre; /* Substitute RE: uncompiled form. */
size_t subre_len; /* Substitute RE: uncompiled length). */
CHAR_T *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. */
#define SC_CONV_ERROR 0x20000000 /* Met with a conversion error. */
u_int32_t flags;
};