[unix-history] / usr.bin / elvis / vars.c

/* vars.c */

/* Author:
 *	Steve Kirkendall
 *	14407 SW Teal Blvd. #C
 *	Beaverton, OR 97005
 *	kirkenda@cs.pdx.edu
 */


/* This file contains variables which weren't happy anyplace else */

#include "config.h"
#include "vi.h"

/*------------------------------------------------------------------------*/

/* used to remember whether the file has been modified */
struct _viflags	viflags;

/* used to access the tmp file */
long		lnum[MAXBLKS];
long		nlines;
int		tmpfd = -1;
int		tmpnum;
#ifndef CRUNCH
int		wset = FALSE;
#endif

/* used to keep track of the current file & alternate file */
long		origtime;
char		origname[256];
char		prevorig[256];
long		prevline = 1;

/* used to track various places in the text */
MARK		mark[NMARKS];	/* marks 'a through 'z, plus mark '' */
MARK		cursor;		/* the cursor position within the file */

/* which mode of the editor we're in */
int		mode;		/* vi mode? ex mode? quitting? */

/* used to manage the args list */
char		args[BLKSIZE];	/* list of filenames to edit */
int		argno;		/* index of current file in args list */
int		nargs;		/* number of filenames in args[] */

/* dummy var, never explicitly referenced */
int		bavar;		/* used only in BeforeAfter macros */

/* used to detect changes that invalidate cached text/blocks */
long		changes;	/* incremented when file is changed */
int		significant;	/* boolean: was a *REAL* change made? */
int		exitcode = 0;	/* status code */

/* used to support the pfetch() macro */
int		plen;		/* length of the line */
long		pline;		/* line number that len refers to */
long		pchgs;		/* "changes" level that len refers to */
char		*ptext;		/* text of previous line, if valid */

/* misc temporary storage - mostly for strings */
BLK		tmpblk;		/* a block used to accumulate changes */

/* screen oriented stuff */
long		topline;	/* file line number of top line */
int		leftcol;	/* column number of left col */
int		physcol;	/* physical column number that cursor is on */
int		physrow;	/* physical row number that cursor is on */

/* used to help minimize that "[Hit a key to continue]" message */
int		exwrote;	/* Boolean: was the last ex command wordy? */

/* This variable affects the behaviour of certain functions -- most importantly
 * the input function.
 */
int		doingdot;	/* boolean: are we doing the "." command? */

/* This variable affects the behaviour of the ":s" command, and it is also
 * used to detect & prohibit nesting of ":g" commands
 */
int		doingglobal;	/* boolean: are doing a ":g" command? */

/* This variable is zeroed before a command executes, and later ORed with the
 * command's flags after the command has been executed.  It is used to force
 * certain flags to be TRUE for *some* invocations of a particular command.
 * For example, "/regexp/+offset" forces the LNMD flag, and sometimes a "p"
 * or "P" command will force FRNT.
 */
int		force_flags;

/* These are used for reporting multi-line changes to the user */
long		rptlines;	/* number of lines affected by a command */
char		*rptlabel;	/* description of how lines were affected */

/* These store info that pertains to the shift-U command */
long	U_line;			/* line# of the undoable line, or 0l for none */
char	U_text[BLKSIZE];	/* contents of the undoable line */


#ifndef NO_VISIBLE
/* These are used to implement the 'v' and 'V' commands */
MARK	V_from;			/* starting point for v or V */
int	V_linemd;		/* boolean: doing line-mode version? (V, not v) */
#endif

/* Bigger stack req'ed for TOS and TURBOC */

#if TOS
long	_stksize = 16384;
#endif

#if TURBOC
#include <dos.h>
extern unsigned _stklen = 16384U;
#endif
Commit	Line	Data
15637ed4 RG	1	/* vars.c */
	2
	3	/* Author:
	4	* Steve Kirkendall
	5	* 14407 SW Teal Blvd. #C
	6	* Beaverton, OR 97005
	7	* kirkenda@cs.pdx.edu
	8	*/
	9
	10
	11	/* This file contains variables which weren't happy anyplace else */
	12
	13	#include "config.h"
	14	#include "vi.h"
	15
	16	/------------------------------------------------------------------------/
	17
	18	/* used to remember whether the file has been modified */
	19	struct _viflags viflags;
	20
	21	/* used to access the tmp file */
	22	long lnum[MAXBLKS];
	23	long nlines;
	24	int tmpfd = -1;
	25	int tmpnum;
	26	#ifndef CRUNCH
	27	int wset = FALSE;
	28	#endif
	29
	30	/* used to keep track of the current file & alternate file */
	31	long origtime;
	32	char origname[256];
	33	char prevorig[256];
	34	long prevline = 1;
	35
	36	/* used to track various places in the text */
	37	MARK mark[NMARKS]; /* marks 'a through 'z, plus mark '' */
	38	MARK cursor; /* the cursor position within the file */
	39
	40	/* which mode of the editor we're in */
	41	int mode; /* vi mode? ex mode? quitting? */
	42
	43	/* used to manage the args list */
	44	char args[BLKSIZE]; /* list of filenames to edit */
	45	int argno; /* index of current file in args list */
	46	int nargs; /* number of filenames in args[] */
	47
	48	/* dummy var, never explicitly referenced */
	49	int bavar; /* used only in BeforeAfter macros */
	50
	51	/* used to detect changes that invalidate cached text/blocks */
	52	long changes; /* incremented when file is changed */
	53	int significant; /* boolean: was a REAL change made? */
78ed81a3	54	int exitcode = 0; /* status code */
15637ed4 RG	55
	56	/* used to support the pfetch() macro */
	57	int plen; /* length of the line */
	58	long pline; /* line number that len refers to */
	59	long pchgs; /* "changes" level that len refers to */
	60	char ptext; / text of previous line, if valid */
	61
	62	/* misc temporary storage - mostly for strings */
	63	BLK tmpblk; /* a block used to accumulate changes */
	64
	65	/* screen oriented stuff */
	66	long topline; /* file line number of top line */
	67	int leftcol; /* column number of left col */
	68	int physcol; /* physical column number that cursor is on */
	69	int physrow; /* physical row number that cursor is on */
	70
	71	/* used to help minimize that "[Hit a key to continue]" message */
	72	int exwrote; /* Boolean: was the last ex command wordy? */
	73
	74	/* This variable affects the behaviour of certain functions -- most importantly
	75	* the input function.
	76	*/
	77	int doingdot; /* boolean: are we doing the "." command? */
	78
	79	/* This variable affects the behaviour of the ":s" command, and it is also
	80	* used to detect & prohibit nesting of ":g" commands
	81	*/
	82	int doingglobal; /* boolean: are doing a ":g" command? */
	83
	84	/* This variable is zeroed before a command executes, and later ORed with the
	85	* command's flags after the command has been executed. It is used to force
	86	* certain flags to be TRUE for some invocations of a particular command.
	87	* For example, "/regexp/+offset" forces the LNMD flag, and sometimes a "p"
	88	* or "P" command will force FRNT.
	89	*/
	90	int force_flags;
	91
	92	/* These are used for reporting multi-line changes to the user */
	93	long rptlines; /* number of lines affected by a command */
	94	char rptlabel; / description of how lines were affected */
	95
	96	/* These store info that pertains to the shift-U command */
	97	long U_line; /* line# of the undoable line, or 0l for none */
	98	char U_text[BLKSIZE]; /* contents of the undoable line */
	99
	100
	101	#ifndef NO_VISIBLE
	102	/* These are used to implement the 'v' and 'V' commands */
	103	MARK V_from; /* starting point for v or V */
	104	int V_linemd; /* boolean: doing line-mode version? (V, not v) */
	105	#endif
	106
	107	/* Bigger stack req'ed for TOS and TURBOC */
	108
	109	#if TOS
	110	long _stksize = 16384;
	111	#endif
	112
	113	#if TURBOC
	114	#include <dos.h>
	115	extern unsigned _stklen = 16384U;
	116	#endif