globals.h

VIM文本编辑器

/* vi:set ts=8 sts=4 sw=4:
 *
 * VIM - Vi IMproved	by Bram Moolenaar
 *
 * Do ":help uganda"  in Vim to read copying and usage conditions.
 * Do ":help credits" in Vim to see a list of people who contributed.
 */

/*
 * definition of global variables
 *
 * EXTERN is only defined in main.c (and in option.h)
 */

#ifndef EXTERN
# define EXTERN extern
# define INIT(x)
#else
# ifndef INIT
#  define INIT(x) x
#  define DO_INIT
# endif
#endif

/*
 * Number of Rows and Columns in the screen.
 * Must be long to be able to use them as options in option.c.
 */
EXTERN long	Rows INIT(= MIN_LINES);		/* nr of rows in the screen */
EXTERN long	Columns INIT(= MIN_COLUMNS); /* nr of columns in the screen */

/*
 * The characters that are currently on the screen are kept in NextScreen.
 * It is a single block of characters, twice the size of the screen.
 * First come the characters for one line, then the attributes for that line.
 *
 * "LinePointers[n]" points into NextScreen, at the start of line 'n'.
 * "LinePointers[n] + Columns" points to the attibutes of line 'n'.
 */
EXTERN char_u	*NextScreen INIT(= NULL);
EXTERN char_u	**LinePointers INIT(= NULL);

EXTERN int	screen_Rows INIT(= 0);	    /* actual size of NextScreen */
EXTERN int	screen_Columns INIT(= 0);   /* actual size of NextScreen */

/*
 * When vgetc() is called, it sets mod_mask to the set of modifiers that are
 * held down based on the KSMOD_* symbols that are read first.
 */
EXTERN int	mod_mask INIT(= 0x0);		/* current key modifiers */

/*
 * Cmdline_row is the row where the command line starts, just below the
 * last window.
 * When the cmdline gets longer than the available space the screen gets
 * scrolled up. After a CTRL-D (show matches), after hitting ':' after
 * "hit return", and for the :global command, the command line is
 * temporarily moved. The old position is restored with the next call to
 * update_screen().
 */
EXTERN int	cmdline_row;

EXTERN int	redraw_cmdline INIT(= FALSE);	/* cmdline must be redrawn */
EXTERN int	clear_cmdline INIT(= FALSE);	/* cmdline must be cleared */
EXTERN int	modified INIT(= FALSE);		/* buffer was modified since
						    last redraw */
EXTERN int	tag_modified INIT(= FALSE);	/* buffer was modified since
						    start of tag command */
EXTERN int	screen_cleared INIT(= FALSE);	/* screen has been cleared */

/*
 * When '$' is included in 'cpoptions' option set:
 * When a change command is given that deletes only part of a line, a dollar
 * is put at the end of the changed text. dollar_vcol is set to the virtual
 * column of this '$'.
 */
EXTERN colnr_t	dollar_vcol INIT(= 0);

/*
 * used for completion on the command line
 */
EXTERN int	expand_context INIT(= CONTEXT_UNKNOWN);
EXTERN char_u	*expand_pattern INIT(= NULL);
EXTERN int	expand_interactively INIT(= FALSE);
EXTERN int	expand_set_path INIT(= FALSE);	/* ":set path=/dir/<Tab>" */

#define CONT_ADDING	(1)	/* "normal" or "adding" expansion */
#define CONT_INTRPT	(2 + 4)	/* a ^X interrupted the current expansion */
				/* it's set only iff N_ADDS is set */
#define CONT_N_ADDS	(4)	/* next ^X<> will add-new or expand-current */
#define CONT_S_IPOS	(8)	/* next ^X<> will set initial_pos?
				 * if so, word-wise-expansion will set SOL */
#define CONT_SOL	(16)	/* pattern includes start of line, just for
				 * word-wise expansion, not set for ^X^L */
#define CONT_LOCAL	(32)	/* for ctrl_x_mode 0, ^X^P/^X^N do a local
				 * expansion, (eg use complete=.) */

EXTERN int		completion_length INIT(= 0);
EXTERN int		continue_status   INIT(= 0);

/*
 * Keep the last (typed) count for a Normal mode command.  Used for the
 * "count" built-in variable.
 */
EXTERN linenr_t		global_opnum INIT(= 0);

/*
 * Functions for putting characters in the command line,
 * while keeping NextScreen updated.
 */
EXTERN int	msg_col;
EXTERN int	msg_row;
EXTERN int	msg_scrolled;

EXTERN char_u	*keep_msg INIT(= NULL);	    /* msg to be shown after redraw */
EXTERN int	keep_msg_attr INIT(= 0);    /* highlight attr for keep_msg */
EXTERN int	need_fileinfo INIT(= FALSE);/* do fileinfo() after redraw */
EXTERN int	msg_scroll INIT(= FALSE);   /* msg_start() will scroll */
EXTERN int	msg_didout INIT(= FALSE);   /* msg_outstr() was used in line */
EXTERN int	msg_didany INIT(= FALSE);   /* msg_outstr() was used at all */
EXTERN int	msg_nowait INIT(= FALSE);   /* don't wait for this msg */
EXTERN int	emsg_off INIT(= FALSE);	    /* don't display errors for now */
EXTERN int	did_emsg;		    /* set by emsg() for DoOneCmd() */
EXTERN int	emsg_on_display INIT(= FALSE);	/* there is an error message */
EXTERN int	rc_did_emsg INIT(= FALSE);  /* vim_regcomp() called emsg() */
EXTERN int	no_wait_return INIT(= 0);   /* don't wait for return now */
EXTERN int	need_wait_return INIT(= 0); /* need to wait for return later */
EXTERN int	dont_wait_return INIT(= 0); /* no need to wait for return */
EXTERN int	quit_more INIT(= FALSE);    /* 'q' hit at "--more--" msg */
#if defined(UNIX) || defined(__EMX__)
EXTERN int	newline_on_exit INIT(= FALSE);	/* did msg in altern. screen */
EXTERN int	intr_char INIT(= 0);	    /* extra interrupt character */
#endif
EXTERN int	vgetc_busy INIT(= FALSE);   /* inside vgetc() now */
EXTERN int	call_shell_retval;	    /* return value from call_shell() */

/*
 * Lines left before a "more" message.	Ex mode needs to be able to reset this
 * after you type something.
 */
EXTERN int lines_left INIT(= -1);	/* lines left for listing */


EXTERN char_u	*sourcing_name INIT( = NULL);/* name of error message source */
EXTERN linenr_t	sourcing_lnum INIT(= 0);    /* line number of the source file */
EXTERN int	file_on_stdin INIT(= FALSE);	/* read file from stdin */

EXTERN int	scroll_region INIT(= FALSE); /* term supports scroll region */
EXTERN int	highlight_match INIT(= FALSE);	/* show search match pos */
EXTERN int	search_match_len;		/* length of matched string */
EXTERN int	no_smartcase INIT(= FALSE);	/* don't use 'smartcase' once */
EXTERN int	need_check_timestamps INIT(= FALSE); /* got STOP signal */
EXTERN int	highlight_attr[HLF_COUNT];  /* Highl. attr for each context. */
EXTERN char_u	*use_gvimrc INIT(= NULL);	/* "-U" cmdline argument */
EXTERN int	cterm_normal_fg_color INIT(= 0);
EXTERN int	cterm_normal_fg_bold INIT(= 0);
EXTERN int	cterm_normal_bg_color INIT(= 0);

#ifdef AUTOCMD
EXTERN int	autocmd_busy INIT(= FALSE);	/* Is apply_autocmds() busy? */
EXTERN int	autocmd_no_enter INIT(= FALSE); /* *Enter autocmds disabled */
EXTERN int	autocmd_no_leave INIT(= FALSE); /* *Leave autocmds disabled */
EXTERN int	modified_was_set;		/* did ":set modified" */
#endif

#ifdef USE_MOUSE
/*
 * Mouse coordinates, set by check_termcode()
 */
EXTERN int	mouse_row;
EXTERN int	mouse_col;
EXTERN int	mouse_past_bottom INIT(= FALSE);/* mouse below last line */
EXTERN int	mouse_past_eol INIT(= FALSE);	/* mouse right of line */
#if defined(DEC_MOUSE)
/*
 * When the DEC mouse has been pressed but not yet released we enable
 * automatic querys for the mouse position.
 */
EXTERN int	WantQueryMouse INIT(= 0);
#endif

#ifdef USE_GUI
/* When the window layout is about to be changed, need_mouse_correct is set,
 * so that gui_mouse_correct() is called afterwards, to correct the mouse
 * pointer when focus-follow-mouse is being used. */
EXTERN int	need_mouse_correct INIT(= FALSE);

/* When double clicking, topline must be the same */
EXTERN linenr_t gui_prev_topline INIT(= 0);
#endif

#endif

#ifdef USE_GUI
/*
 * Menu item just selected, set by check_termcode()
 */
EXTERN GuiMenu	*current_menu;

/*
 * Scrollbar moved and new value, set by check_termcode()
 */
EXTERN int	current_scrollbar;
EXTERN long_u	scrollbar_value;

/* found "-rv" or "-reverse" in command line args */
EXTERN int	found_reverse_arg INIT(= FALSE);
EXTERN char *	font_opt INIT(= NULL);
#endif

#ifdef USE_CLIPBOARD
EXTERN VimClipboard clipboard;
#endif

/*
 * All windows are linked in a list. firstwin points to the first entry, lastwin
 * to the last entry (can be the same as firstwin) and curwin to the currently
 * active window.
 */
EXTERN WIN	*firstwin;	/* first window */
EXTERN WIN	*lastwin;	/* last window */
EXTERN WIN	*curwin;	/* currently active window */

/*
 * All buffers are linked in a list. 'firstbuf' points to the first entry,
 * 'lastbuf' to the last entry and 'curbuf' to the currently active buffer.
 */
EXTERN BUF	*firstbuf INIT(= NULL);	/* first buffer */
EXTERN BUF	*lastbuf INIT(= NULL);	/* last buffer */
EXTERN BUF	*curbuf INIT(= NULL);	/* currently active buffer */

/*
 * list of files being edited (argument list)
 */
EXTERN char_u	**arg_files;	/* list of files */
EXTERN int	arg_file_count;	/* number of files */
EXTERN int	arg_had_last INIT(= FALSE); /* accessed last file in arglist */

EXTERN int	ru_col;		/* column for ruler */
EXTERN int	sc_col;		/* column for shown command */

/*
 * When starting or exiting some things are done differently (e.g. screen
 * updating).
 */
EXTERN int	starting INIT(= TRUE);
				/* set to FALSE when starting up finished */
EXTERN int	exiting INIT(= FALSE);
				/* set to TRUE when abandoning Vim */
EXTERN int	full_screen INIT(= FALSE);
				/* set to TRUE when doing full-screen output
				 * otherwise only writing some messages */

EXTERN int	restricted INIT(= FALSE);
				/* set to TRUE when started as "rvim" */
EXTERN int	secure INIT(= FALSE);
				/* set to TRUE when only "safe" commands are
				 * allowed, e.g. when sourcing .exrc or .vimrc
				 * in current directory */

EXTERN int	silent_mode INIT(= FALSE);
				/* set to TRUE when "-s" commandline argument
				 * used for ex */

EXTERN FPOS	VIsual;		/* start position of active Visual selection */
EXTERN int	VIsual_active INIT(= FALSE);
				/* whether Visual mode is active */
EXTERN int	VIsual_select INIT(= FALSE);
				/* whether Select mode is active */
EXTERN int	VIsual_reselect;
				/* whether to restart the selection after a
				 * Select mode mapping or menu */

EXTERN int	VIsual_mode INIT(= 'v');
				/* type of Visual mode */
EXTERN int	redo_VIsual_busy INIT(= FALSE);
				/* TRUE when redoing Visual */

#ifdef USE_MOUSE
/*
 * When pasting text with the middle mouse button in visual mode with
 * restart_edit set, remember where it started so we can set Insstart.
 */
EXTERN FPOS	where_paste_started;
#endif

/*
 * This flag is used to make auto-indent work right on lines where only a
 * <RETURN> or <ESC> is typed. It is set when an auto-indent is done, and
 * reset when any other editting is done on the line. If an <ESC> or <RETURN>
 * is received, and did_ai is TRUE, the line is truncated.
 */
EXTERN int     did_ai INIT(= FALSE);

#ifdef SMARTINDENT
/*