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Annotation of researchv9/cmd/emacs/emacs_buf.h, revision 1.1

1.1     ! root        1: /* buffer definitions for emacs */
        !             2: 
        !             3: /* EMACS_MODES: c !fill */
        !             4: 
        !             5: int BUFILE;                    /* buffer file number */
        !             6: int BUFEND;            /* next free line of buffer */
        !             7: #define bufname bbfname[curbf]
        !             8: #define filename bfilname[curbf]
        !             9: #define bufmod bbfmod[curbf]
        !            10: #define diron dirbuf[curbf]
        !            11: 
        !            12: /* Undo information */
        !            13: 
        !            14: #define NUNDO 64                       /* Number of undo segments kept */
        !            15: 
        !            16: long undostack[NUNDO];
        !            17: int undop;
        !            18: int unseg;
        !            19: 
        !            20: /* Format of an entry.  This should be done with fields, but it
        !            21:  * doesn't work on some machines since the fields are bigger than ints */
        !            22: 
        !            23: #define UNDMASK 7                      /* Mask for type field */
        !            24: #define UNDSHIFT 3                     /* Shift to extract parameter */
        !            25: 
        !            26: #define UNDEL 1                                /* next item is a deletion */
        !            27: #define UNINS 2                                /* next item is an insertion */
        !            28: #define UNMUL 3                                /* Next item is a multiple undo */
        !            29: #define UNBAD 4                                /* Next item is a partial multiple */
        !            30: 
        !            31: /* kill stack stuff */
        !            32: 
        !            33: #define KBSIZE 512
        !            34: #define NKILLP 16
        !            35: #ifdef PC
        !            36: #define KBLIM 8192L
        !            37: int BINMODE = 0;
        !            38: #else
        !            39: #define KBLIM 262144L                  /* size of kill buffer */
        !            40: #endif PC
        !            41: int kbdfile = 0;
        !            42: 
        !            43: /* File size limit -- rejects huge files */
        !            44: 
        !            45: #ifdef PC
        !            46: #define MAXFS 140000
        !            47: #else
        !            48: #ifdef u370
        !            49: #define MAXFS 1500000
        !            50: #else
        !            51: #define MAXFS 750000
        !            52: #endif
        !            53: #endif
        !            54: long kstk[NKILLP+1];
        !            55: char kbuf[KBSIZE];
        !            56: int kbapp = 0;                         /* append kill buffer flag */
        !            57: int nkp = -1;
        !            58: long kend = 0L;
        !            59: long kbwrt = 0L;
        !            60: int kptr = 0;
        !            61: long kbase = 0L;
        !            62: int kbmod = 0;
        !            63: int kfile = 0;
        !            64: int crashes = 0;
        !            65: int EOFNL = 1;                         /* If 1, force newline on EOF */
        !            66: 
        !            67: /* Cryptography */
        !            68: 
        !            69: #ifdef CRYPTO
        !            70: int crypt = 0;
        !            71: char cryptkey[10];
        !            72: long bufkey;
        !            73: #endif
        !            74: 
        !            75: /* block buffer stuff */
        !            76: 
        !            77: 
        !            78: #ifdef PC
        !            79: /* Stupid compiler won't do compile time computations */
        !            80: 
        !            81: #define BFACT 32
        !            82: #define BMASK 0777
        !            83: #define BRESID 037
        !            84: #define BRMASK 0177740
        !            85: #define BRSHIFT 5
        !            86: #else
        !            87: #define BFACT (BLEN/LSMALL)
        !            88: #ifdef v8
        !            89: #undef BMASK
        !            90: #endif
        !            91: #define BMASK (BLEN-1)
        !            92: #define BRESID (BFACT-1)
        !            93: #define BRMASK (~BRESID)
        !            94: #define BRSHIFT (BSHIFT-LSSHIFT)
        !            95: #endif
        !            96: 
        !            97: /* sbrk rounding factor */
        !            98: 
        !            99: #ifdef univac
        !           100: #define        BRKMSK  0377777777000
        !           101: #else
        !           102: #ifdef pdp11
        !           103: #define BRKMSK 0177000
        !           104: #else
        !           105: #define BRKMSK ~0777
        !           106: #endif
        !           107: #endif
        !           108: 
        !           109: int fbkno;                             /* first block buffer */
        !           110: int macptr;                            /* macro storage pointer */
        !           111: 
        !           112: int sblk;
        !           113: int curblk;
        !           114: int mostwrit;
        !           115: int nxtflsh;
        !           116: 
        !           117: 
        !           118: char bstat[NBLOCK];
        !           119: unsigned bblock[NBLOCK];
        !           120: 
        !           121: int hipt[NBLOCK];
        !           122: int lowpt[NBLOCK];
        !           123: int xline;
        !           124: 
        !           125: /* multiple buffer stuff */
        !           126: 
        !           127: #define NBUF 12
        !           128: #ifdef PC
        !           129: char *BTEMPATH = "c";
        !           130: #else
        !           131: #ifndef BTEMPATH
        !           132: #define BTEMPATH "/tmp"
        !           133: #endif
        !           134: #endif PC
        !           135: int btmpfile[NBUF]= {0,0,0,0,0,0,0,0};         /* temp file frn */
        !           136: int btmpfree[NBUF]= {0,0,0,0,0,0,0,0};         /* temp file free pointer */
        !           137: int bcurln[NBUF] = {0,0,0,0,0,0,0,0};          /* current line */
        !           138: int bcolumn[NBUF];                                     /* current column */
        !           139: int bnlines[NBUF];                                     /* number of lines */
        !           140: char bbfmod[NBUF];
        !           141: time_t mtime[NBUF];
        !           142: #ifdef DIRED
        !           143: char dirbuf[NBUF];
        !           144: #endif
        !           145: char bbfname[NBUF] [FNLEN];            /* buffer names */
        !           146: char bfilname[NBUF] [FNLEN];           /* buffer file name */
        !           147: 
        !           148: int curbf = 0;                                 /* current buffer number */
        !           149: 
        !           150: #define bnext() (blockp<blocke ? *blockp++: bnxt())
        !           151: #define bput(chr) if(blockp<blocke) *blockp++ = (chr) ; else bpt(chr)
        !           152: 
        !           153: /* trace stuff */
        !           154: 
        !           155: 
        !           156: #define TSIZE 200
        !           157: 
        !           158: /*int trcbuf[TSIZE];*/
        !           159: /*int tnumb;*/
        !           160: 
        !           161: /*#define TRACE(event) if (tnumb<TSIZE) trcbuf[tnumb++] = event; else trcbuf[(tnumb=1)-1] = event;*/
        !           162: #define TRACE(event)
        !           163: 
        !           164: #define TRSEEK 0
        !           165: #define TRREAD 1
        !           166: #define TRWRIT 2
        !           167: #define TRMAKE 3
        !           168: #define TRCKEX 4
        !           169: #define TRCKCP 5
        !           170: #define TRMKEM 6
        !           171: #define TRBGRAB 7
        !           172: 
        !           173: extern int VERBOSE;
        !           174: char *expenv();
        !           175: extern char *mkl();
        !           176: extern int NSCHAR;
        !           177: extern int SAVEMD;
        !           178: extern char mdchar[];  
        !           179: extern char *endput;
        !           180: extern char *getenv();
        !           181: extern char *myname;
        !           182: extern char version[];
        !           183: char serial[10] = {' ',' ',' ',' ',' ',' ',' ',' ','0',0};
        !           184: extern int READONLY;
        !           185: extern int USILENT;
        !           186: extern int savelink;                   /* Mode fails to ask on links */
        !           187: extern int etrace;

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