commands/elvis/vars.c

   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? */
  54
  55 /* used to support the pfetch() macro */
  56 int             plen;           /* length of the line */
  57 long            pline;          /* line number that len refers to */
  58 long            pchgs;          /* "changes" level that len refers to */
  59 char            *ptext;         /* text of previous line, if valid */
  60
  61 /* misc temporary storage - mostly for strings */
  62 BLK             tmpblk;         /* a block used to accumulate changes */
  63
  64 /* screen oriented stuff */
  65 long            topline;        /* file line number of top line */
  66 int             leftcol;        /* column number of left col */
  67 int             physcol;        /* physical column number that cursor is on */
  68 int             physrow;        /* physical row number that cursor is on */
  69
  70 /* used to help minimize that "[Hit a key to continue]" message */
  71 int             exwrote;        /* Boolean: was the last ex command wordy? */
  72
  73 /* This variable affects the behaviour of certain functions -- most importantly
  74  * the input function.
  75  */
  76 int             doingdot;       /* boolean: are we doing the "." command? */
  77
  78 /* This variable affects the behaviour of the ":s" command, and it is also
  79  * used to detect & prohibit nesting of ":g" commands
  80  */
  81 int             doingglobal;    /* boolean: are doing a ":g" command? */
  82
  83 /* This variable is zeroed before a command executes, and later ORed with the
  84  * command's flags after the command has been executed.  It is used to force
  85  * certain flags to be TRUE for *some* invocations of a particular command.
  86  * For example, "/regexp/+offset" forces the LNMD flag, and sometimes a "p"
  87  * or "P" command will force FRNT.
  88  */
  89 int             force_flags;
  90
  91 /* These are used for reporting multi-line changes to the user */
  92 long            rptlines;       /* number of lines affected by a command */
  93 char            *rptlabel;      /* description of how lines were affected */
  94
  95 /* These store info that pertains to the shift-U command */
  96 long    U_line;                 /* line# of the undoable line, or 0l for none */
  97 char    U_text[BLKSIZE];        /* contents of the undoable line */
  98
  99
 100 #ifndef NO_VISIBLE
 101 /* These are used to implement the 'v' and 'V' commands */
 102 MARK    V_from;                 /* starting point for v or V */
 103 int     V_linemd;               /* boolean: doing line-mode version? (V, not v) */
 104 #endif
 105
 106 /* Bigger stack req'ed for TOS and TURBOC */
 107
 108 #if TOS
 109 long    _stksize = 16384;
 110 #endif
 111
 112 #if TURBOC
 113 #include <dos.h>
 114 extern unsigned _stklen = 16384U;
 115 #endif