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Annotation of researchv9/cmd/troff/tdef.h, revision 1.1

1.1     ! root        1: 
        !             2: /* starting values for typesetting parameters: */
        !             3: 
        !             4: #define        PS      10      /* default point size */
        !             5: #define        FT      1       /* default font position */
        !             6: #define ULFONT 2       /* default underline font */
        !             7: #define        BDFONT  3       /* default emboldening font */
        !             8: #define        BIFONT  4       /* default bold italic font */
        !             9: #define        LL      (unsigned) 65*INCH/10   /* line length; 39picas=6.5in */
        !            10: #define        VS      ((12*INCH)/72)  /* initial vert space */
        !            11: 
        !            12: #ifdef NROFF
        !            13: #      define  EM      t.Em
        !            14: #      define  HOR     t.Adj
        !            15: #      define  VERT    t.Vert
        !            16: #      define  INCH    240     /* increments per inch */
        !            17: #      define  SPS     INCH/10 /* space size */
        !            18: #      define  SS      INCH/10 /* " */
        !            19: #      define  TRAILER 0
        !            20: #      define  PO      0 /* page offset */
        !            21: #      define  ASCII   1
        !            22: #      define  PTID    1
        !            23: #      define  LG      0
        !            24: #      define  DTAB    0       /* set at 8 Ems at init time */
        !            25: #      define  ICS     2*SPS
        !            26: #endif
        !            27: #ifndef NROFF
        !            28:        /* Inch is set by ptinit() when troff started.
        !            29:        /* all derived values set then too
        !            30:        */
        !            31: #      define  INCH    Inch    /* troff resolution -- number of goobies/inch  */
        !            32: #      define  POINT   (INCH/72)       /* goobies per point (1/72 inch) */
        !            33: #      define  HOR     Hor     /* horizontal resolution in goobies */
        !            34: #      define  VERT    Vert    /* vertical resolution in goobies */
        !            35: #      define  SPS     (EM/3)  /* space size  */
        !            36: #      define  SS      12      /* space size in 36ths of an em */
        !            37: #      define  PO      (INCH)  /* page offset 1 inch */
        !            38: #      define  EM      (((long) INCH * pts + 36) / 72) /* don't lose significance */
        !            39: #      define  EMPTS(pts)      (((long) INCH * (pts) + 36) / 72)
        !            40: #      define  ASCII   0
        !            41: #      define  PTID    1
        !            42: #      define  LG      1
        !            43: #      define  DTAB    (INCH/2)
        !            44: #      define  ICS     (3*SPS)
        !            45: #endif
        !            46: 
        !            47: /* These "characters" are used to encode various internal functions
        !            48: /* Some make use of the fact that most ascii characters between
        !            49: /* 0 and 040 don't have any graphic or other function.
        !            50: /* The few that do have a purpose (e.g., \n, \b, \t, ...
        !            51: /* are avoided by the ad hoc choices here.
        !            52: /* See ifilt[] in n1.c for others -- 1, 2, 3, 5, 6, 7, 010, 011, 012 
        !            53: */
        !            54: 
        !            55: #define        LEADER  001
        !            56: #define        IMP     004     /* impossible char; glues things together */
        !            57: #define        TAB     011
        !            58: #define        RPT     014     /* next character is to be repeated many times */
        !            59: #define        CHARHT  015     /* size field sets character height */
        !            60: #define        SLANT   016     /* size field sets amount of slant */
        !            61: #define        DRAWFCN 017     /* next several chars describe arb drawing fcns */
        !            62: #      define  DRAWLINE        'l'     /* line: 'l' dx dy char */
        !            63: #      define  DRAWCIRCLE      'c'     /* circle: 'c' r */
        !            64: #      define  DRAWELLIPSE     'e'     /* ellipse: 'e' rx ry */
        !            65: #      define  DRAWARC         'a'     /* arc: 'a' dx dy dx dy */
        !            66: #      define  DRAWSPLINE      '~'     /* quadratic B spline: '~' dx dy dx dy ... */
        !            67:                                        /* other splines go thru too */
        !            68: /* NOTE:  the use of ~ is a botch since it's often used in .tr commands */
        !            69: /* better to use a letter like s, but change it in the postprocessors too */
        !            70: 
        !            71: #define        LEFT    020     /* \{ */
        !            72: #define        RIGHT   021     /* \} */
        !            73: #define        FILLER  022     /* \& and similar purposes */
        !            74: #define        XON     023     /* \X'...' starts here */
        !            75: #define        OHC     024     /* optional hyphenation character \% */
        !            76: #define        CONT    025     /* \c character */
        !            77: #define        PRESC   026     /* printable escape */
        !            78: #define        UNPAD   027     /* unpaddable blank */
        !            79: #define        XPAR    030     /* transparent mode indicator */
        !            80: #define        FLSS    031     /* next tchar contains vertical space */
        !            81:                        /* used when recalling diverted text */
        !            82: #define        WORDSP  032     /* paddable word space */
        !            83: #define        ESC     033     /* current escape character */
        !            84: #define        XOFF    034     /* \X'...' ends here */
        !            85:                        /* matches XON, but they will probably never nest */
        !            86:                        /* so could drop this when another control is needed */
        !            87: 
        !            88: #define        iscontrol(n)    (n==035 || n==036)      /* used to test the next two */
        !            89: #define        HX      035     /* next character is value of \x'...' */
        !            90: #define        FONTPOS 036     /* position of font \f(XX encoded in top */
        !            91: 
        !            92: #define        HYPHEN  c_hyphen
        !            93: #define        EMDASH  c_emdash        /* \(em */
        !            94: #define        RULE    c_rule          /* \(ru */
        !            95: #define        MINUS   c_minus         /* minus sign on current font */
        !            96: #define        LIG_FI  c_fi            /* \(ff */
        !            97: #define        LIG_FL  c_fl            /* \(fl */
        !            98: #define        LIG_FF  c_ff            /* \(ff */
        !            99: #define        LIG_FFI c_ffi           /* \(Fi */
        !           100: #define        LIG_FFL c_ffl           /* \(Fl */
        !           101: #define        ACUTE   c_acute         /* acute accent \(aa */
        !           102: #define        GRAVE   c_grave         /* grave accent \(ga */
        !           103: #define        UNDERLINE c_under       /* \(ul */
        !           104: #define        ROOTEN  c_rooten        /* root en \(rn */
        !           105: #define        BOXRULE c_boxrule       /* box rule \(br */
        !           106: #define        LEFTHAND c_lefthand     /* left hand for word overflow */
        !           107: #define        DAGGER  c_dagger        /* dagger for footnotes */
        !           108: 
        !           109: /* array sizes, and similar limits: */
        !           110: 
        !           111: #define        NFONT   10      /* maximum number of fonts (including specials) */
        !           112: #define        EXTRAFONT 500   /* extra space for swapping a font */
        !           113: #define        NN      400     /* number registers */
        !           114: #define        NNAMES  15       /* predefined reg names */
        !           115: #define        NIF     15      /* if-else nesting */
        !           116: #define        NS      128     /* name buffer */
        !           117: #define        NTM     256     /* tm buffer */
        !           118: #define        NEV     3       /* environments */
        !           119: #define        EVLSZ   10      /* size of ev stack */
        !           120: #define        DSIZE   512     /* disk sector size in chars */
        !           121: 
        !           122: #define        NM      500     /* requests + macros */
        !           123: #define        DELTA   1024    /* delta core bytes */
        !           124: #define        NHYP    10      /* max hyphens per word */
        !           125: #define        NHEX    128     /* byte size of exception word list */
        !           126: #define        NTAB    40      /* tab stops */
        !           127: #define        NSO     5       /* "so" depth */
        !           128: #define        NMF     5       /* number of -m flags */
        !           129: #define        WDSIZE  270     /* word buffer size */
        !           130: #define        LNSIZE  2048    /* line buffer size */
        !           131: #define        OLNSIZE 3072    /* output line buffer;  bigger for 'w', etc. */
        !           132: #define        NDI     5       /* number of diversions */
        !           133: #ifndef NROFF
        !           134: /* the numerology of this is that NCHARS must be greater than the sum of
        !           135: 1. max size of any font for which you want to use \N,
        !           136:        i.e., value of BIGGESTFONT in makedev.c which must be <= 254
        !           137: 2. number of special codes in charset of DESC, which ends up being the
        !           138:        value of nchtab and which must be less than 512.
        !           139: 3. 128, which apparently is the size of the portion of the tables reserved
        !           140:        for special control symbols */
        !           141: /* to allow \N of up to 254 with up to 338 special characters
        !           142:        you need NCHARS of 254 + 338 + 128 = 894 */
        !           143: #define        NCHARS  254+512+128     /* maximum size of troff character set*/
        !           144: #else
        !           145: /* However for nroff you want only :
        !           146: 1. number of special codes in charset of DESC, which ends up being the
        !           147:        value of nchtab and which must be less than 512.
        !           148: 2. 128, which apparently is the size of the portion of the tables reserved
        !           149:        for special control symbols
        !           150: Apparently the max N of \N is irrelevant; */
        !           151: /* to allow \N of up to 254 with up to 338 special characters
        !           152:        you need NCHARS of 338 + 128 = 466 */
        !           153: #define        NCHARS  512+128 /* maximum size of troff character set */
        !           154: #endif
        !           155: #define        NTRTAB  NCHARS  /* number of items in trtab[] */
        !           156: #define NWIDCACHE NCHARS       /* number of items in widcache[] */
        !           157: #define        NTRAP   20      /* number of traps */
        !           158: #define        NPN     20      /* numbers in "-o" */
        !           159: #define        FBUFSZ  256     /* field buf size words */
        !           160: #define        OBUFSZ  4096    /* bytes */
        !           161: #define        IBUFSZ  4096    /* bytes */
        !           162: #define        NC      1024    /* cbuf size words */
        !           163: #define        NOV     10      /* number of overstrike chars */
        !           164: #define        NPP     10      /* pads per field */
        !           165: 
        !           166: /*
        !           167:        Internal character representation:
        !           168:        Internally, every character is carried around as
        !           169:        a 32 bit cookie, called a "tchar" (typedef long).
        !           170:        Bits are numbered 31..0 from left to right.
        !           171:        If bit 15 is 1, the character is motion, with
        !           172:                if bit 16 it's vertical motion
        !           173:                if bit 17 it's negative motion
        !           174:        If bit 15 is 0, the character is a real character.
        !           175:                if bit 31       zero motion
        !           176:                bits 30..24     size
        !           177:                bits 23..16     font
        !           178: */
        !           179: 
        !           180: /* in the following, "L" should really be a tchar, but ... */
        !           181: 
        !           182: #define        MOT     (01L<<15)       /* motion character indicator */
        !           183: #define        MOTV    (07L<<15)       /* clear for motion part */
        !           184: #define        VMOT    (01L<<16)       /* vert motion bit */
        !           185: #define        NMOT    (01L<<17)       /* negative motion indicator*/
        !           186: #define        MAXMOT  32767   /* bad way to write this!!! */
        !           187: #define        ismot(n)        ((n) & MOT)
        !           188: #define        isvmot(n)       ((n) & VMOT)    /* must have tested MOT previously */
        !           189: #define        isnmot(n)       ((n) & NMOT)    /* ditto */
        !           190: #define        absmot(n)       (unsigned)(0177777 & (n) & ~MOT)        /* (short) is cheap mask */
        !           191: 
        !           192: #define        ZBIT    (01L << 31)     /* zero width char */
        !           193: #define        iszbit(n)       ((n) & ZBIT)
        !           194: 
        !           195: #define        SMASK           (0177L << 24)
        !           196: #define        FMASK           (0377L << 16)
        !           197: #define        SFMASK          (SMASK|FMASK)   /* size and font in a tchar */
        !           198: #define        sbits(n)        (((n) >> 24) & 0177)
        !           199: #define        fbits(n)        (((n) >> 16) & 0377)
        !           200: #define        sfbits(n)       (unsigned)(0177777 & (((n) & SFMASK) >> 16))
        !           201: #define        cbits(n)        (unsigned)(0177777 & (n))       /* isolate bottom 16 bits  */
        !           202: 
        !           203: #define        setsbits(n,s)   n = (n & ~SMASK) | (tchar)(s) << 24
        !           204: #define        setfbits(n,f)   n = (n & ~FMASK) | (tchar)(f) << 16
        !           205: #define        setsfbits(n,sf) n = (n & ~SFMASK) | (tchar)(sf) << 16
        !           206: #define        setcbits(n,c)   n = (n & ~077777L | (c))        /* set character bits */
        !           207: 
        !           208: #define        BYTEMASK        0377
        !           209: #define        BYTE    8
        !           210: 
        !           211: #define        ZONE    5       /* 5 hrs for EST */
        !           212: #define        TABMASK  037777
        !           213: #define        RTAB    (unsigned) 0100000
        !           214: #define        CTAB    040000
        !           215: 
        !           216: #define        TABBIT  02              /* bits in gchtab */
        !           217: #define        LDRBIT  04
        !           218: #define        FCBIT   010
        !           219: 
        !           220: #define        PAIR(A,B)       (A|(B<<BYTE))
        !           221: 
        !           222: #define        oput(c) if ((*obufp++ = (c)), obufp >= &obuf[OBUFSZ]) flusho(); else
        !           223: 
        !           224: /*
        !           225:  * "temp file" parameters.  macros and strings
        !           226:  * are stored in an array of linked blocks,
        !           227:  * which may be in memory and an array called
        !           228:  * corebuf[], if INCORE is set during
        !           229:  * compilation, or otherwise in a file called trtmp$$.
        !           230: 
        !           231:  * The numerology is delicate if filep is 16 bits:
        !           232:        #define BLK 128
        !           233:        #define NBLIST 512L
        !           234:  * i.e., the product is 16 bits long.
        !           235: 
        !           236:  * If filep is an unsigned long (and if your
        !           237:  * compiler will let you say that) then NBLIST
        !           238:  * can be a lot bigger.  Of course that makes
        !           239:  * the file or core image a lot bigger too,
        !           240:  * and means you don't detect missing diversion
        !           241:  * terminations as quickly... .
        !           242:  * It also means that you may have trouble running
        !           243:  * on non-swapping systems, since the core image
        !           244:  * will be over 1Mb.
        !           245: 
        !           246:  * BLK must be a power of 2
        !           247:  */
        !           248: 
        !           249: typedef long filep;    /* this is good for 32 bit machines */
        !           250: #define        MONE    ((filep)-1)
        !           251: 
        !           252: #define        BLK     128     /* alloc block in tchars */
        !           253: 
        !           254: #ifdef SMALLER
        !           255: #      define  NBLIST  512L
        !           256: #else
        !           257: #      define  NBLIST  2048L   /* allocation list.  smallish machines use 512 */
        !           258:                                /* machines without paging can use 1024 */
        !           259: #endif
        !           260: 
        !           261: /* Other things are stored in the temp file or corebuf:
        !           262:  *     a single block for .rd input, at offset RD_OFFSET
        !           263:  *     NEV copies of the environment block, at offset ENV_OFFSET
        !           264: 
        !           265:  * The existing implementation assumes very strongly that
        !           266:  * these are respectively NBLIST*BLK and 0.
        !           267: 
        !           268:  */
        !           269: 
        !           270: #define        RD_OFFSET       (NBLIST * BLK)
        !           271: #define ENV_OFFSET     0
        !           272: #define        ENV_BLK         ((NEV * sizeof(env) / sizeof(tchar) + BLK-1) / BLK)
        !           273:                                /* rounded up to even BLK */
        !           274: 
        !           275: typedef        long    tchar;
        !           276: 
        !           277: extern tchar   getch(), getch0();
        !           278: extern tchar   rbf(), rbf0();
        !           279: extern tchar   mot(), hmot(), vmot();
        !           280: extern tchar   makem(), sethl();
        !           281: extern tchar   popi();
        !           282: extern tchar   getlg();
        !           283: extern tchar   xlss();
        !           284: extern tchar   setfield();
        !           285: extern tchar   setz();
        !           286: extern tchar   setch();
        !           287: extern tchar   setht(), setslant();
        !           288: 
        !           289: #define        atoi()  ((int) atoi0())
        !           290: extern tchar   setabs();
        !           291: extern long    atoi0();
        !           292: extern long    lseek();
        !           293: extern long    time();
        !           294: extern char    *strcat();
        !           295: extern char    *strcpy();
        !           296: extern char    *sprintf();
        !           297: 
        !           298: extern int     Inch, Hor, Vert, Unitwidth;
        !           299: 
        !           300: /* these characters are used as various signals or values
        !           301: /* in miscellaneous places.
        !           302: /* values are set in specnames in t10.c
        !           303: */
        !           304: 
        !           305: extern int     c_hyphen;
        !           306: extern int     c_emdash;
        !           307: extern int     c_rule;
        !           308: extern int     c_minus;
        !           309: extern int     c_fi;
        !           310: extern int     c_fl;
        !           311: extern int     c_ff;
        !           312: extern int     c_ffi;
        !           313: extern int     c_ffl;
        !           314: extern int     c_acute;
        !           315: extern int     c_grave;
        !           316: extern int     c_under;
        !           317: extern int     c_rooten;
        !           318: extern int     c_boxrule;
        !           319: extern int     c_lefthand;
        !           320: extern int     c_dagger;
        !           321: 
        !           322: extern int     stderr; /* this is NOT the stdio value! */
        !           323: 
        !           324: extern struct  d {     /* diversion */
        !           325:        filep   op;
        !           326:        int     dnl;
        !           327:        int     dimac;
        !           328:        int     ditrap;
        !           329:        int     ditf;
        !           330:        int     alss;
        !           331:        int     blss;
        !           332:        int     nls;
        !           333:        int     mkline;
        !           334:        int     maxl;
        !           335:        int     hnl;
        !           336:        int     curd;
        !           337: };
        !           338: 
        !           339: extern struct  s {     /* stack frame */
        !           340:        int     nargs;
        !           341:        struct s *pframe;
        !           342:        filep   pip;
        !           343:        int     pnchar;
        !           344:        tchar   prchar;
        !           345:        int     ppendt;
        !           346:        tchar   pch;
        !           347:        tchar   *lastpbp;
        !           348:        int     mname;
        !           349: };
        !           350: 
        !           351: extern struct contab {
        !           352:        unsigned short  rq;
        !           353:        struct  contab *link;
        !           354:        int     (*f)();
        !           355:        filep mx;
        !           356: } contab[NM];
        !           357: 
        !           358: extern struct numtab {
        !           359:        short   r;              /* name */
        !           360:        short   fmt;
        !           361:        short   inc;
        !           362:        int     val;
        !           363:        struct  numtab *link;
        !           364: } numtab[NN];
        !           365: 
        !           366: #define        PN      0
        !           367: #define        NL      1
        !           368: #define        YR      2
        !           369: #define        HP      3
        !           370: #define        CT      4
        !           371: #define        DN      5
        !           372: #define        MO      6
        !           373: #define        DY      7
        !           374: #define        DW      8
        !           375: #define        LN      9
        !           376: #define        DL      10
        !           377: #define        ST      11
        !           378: #define        SB      12
        !           379: #define        CD      13
        !           380: #define        PID     14
        !           381: 
        !           382: /* the infamous environment block */
        !           383: 
        !           384: #define        ics     env._ics
        !           385: #define        sps     env._sps
        !           386: #define        spacesz env._spacesz
        !           387: #define        lss     env._lss
        !           388: #define        lss1    env._lss1
        !           389: #define        ll      env._ll
        !           390: #define        ll1     env._ll1
        !           391: #define        lt      env._lt
        !           392: #define        lt1     env._lt1
        !           393: #define        ic      env._ic
        !           394: #define        icf     env._icf
        !           395: #define        chbits  env._chbits
        !           396: #define        spbits  env._spbits
        !           397: #define        nmbits  env._nmbits
        !           398: #define        apts    env._apts
        !           399: #define        apts1   env._apts1
        !           400: #define        pts     env._pts
        !           401: #define        pts1    env._pts1
        !           402: #define        font    env._font
        !           403: #define        font1   env._font1
        !           404: #define        ls      env._ls
        !           405: #define        ls1     env._ls1
        !           406: #define        ad      env._ad
        !           407: #define        nms     env._nms
        !           408: #define        ndf     env._ndf
        !           409: #define        fi      env._fi
        !           410: #define        cc      env._cc
        !           411: #define        c2      env._c2
        !           412: #define        ohc     env._ohc
        !           413: #define        tdelim  env._tdelim
        !           414: #define        hyf     env._hyf
        !           415: #define        hyoff   env._hyoff
        !           416: #define        un1     env._un1
        !           417: #define        tabc    env._tabc
        !           418: #define        dotc    env._dotc
        !           419: #define        adsp    env._adsp
        !           420: #define        adrem   env._adrem
        !           421: #define        lastl   env._lastl
        !           422: #define        nel     env._nel
        !           423: #define        admod   env._admod
        !           424: #define        wordp   env._wordp
        !           425: #define        spflg   env._spflg
        !           426: #define        linep   env._linep
        !           427: #define        wdend   env._wdend
        !           428: #define        wdstart env._wdstart
        !           429: #define        wne     env._wne
        !           430: #define        ne      env._ne
        !           431: #define        nc      env._nc
        !           432: #define        nb      env._nb
        !           433: #define        lnmod   env._lnmod
        !           434: #define        nwd     env._nwd
        !           435: #define        nn      env._nn
        !           436: #define        ni      env._ni
        !           437: #define        ul      env._ul
        !           438: #define        cu      env._cu
        !           439: #define        ce      env._ce
        !           440: #define        in      env._in
        !           441: #define        in1     env._in1
        !           442: #define        un      env._un
        !           443: #define        wch     env._wch
        !           444: #define        pendt   env._pendt
        !           445: #define        pendw   env._pendw
        !           446: #define        pendnf  env._pendnf
        !           447: #define        spread  env._spread
        !           448: #define        it      env._it
        !           449: #define        itmac   env._itmac
        !           450: #define        lnsize  env._lnsize
        !           451: #define        hyptr   env._hyptr
        !           452: #define        tabtab  env._tabtab
        !           453: #define        line    env._line
        !           454: #define        word    env._word
        !           455: 
        !           456: extern struct env {
        !           457:        int     _ics;
        !           458:        int     _sps;
        !           459:        int     _spacesz;
        !           460:        int     _lss;
        !           461:        int     _lss1;
        !           462:        int     _ll;
        !           463:        int     _ll1;
        !           464:        int     _lt;
        !           465:        int     _lt1;
        !           466:        tchar   _ic;
        !           467:        int     _icf;
        !           468:        tchar   _chbits;
        !           469:        tchar   _spbits;
        !           470:        tchar   _nmbits;
        !           471:        int     _apts;
        !           472:        int     _apts1;
        !           473:        int     _pts;
        !           474:        int     _pts1;
        !           475:        int     _font;
        !           476:        int     _font1;
        !           477:        int     _ls;
        !           478:        int     _ls1;
        !           479:        int     _ad;
        !           480:        int     _nms;
        !           481:        int     _ndf;
        !           482:        int     _fi;
        !           483:        int     _cc;
        !           484:        int     _c2;
        !           485:        int     _ohc;
        !           486:        int     _tdelim;
        !           487:        int     _hyf;
        !           488:        int     _hyoff;
        !           489:        int     _un1;
        !           490:        int     _tabc;
        !           491:        int     _dotc;
        !           492:        int     _adsp;
        !           493:        int     _adrem;
        !           494:        int     _lastl;
        !           495:        int     _nel;
        !           496:        int     _admod;
        !           497:        tchar   *_wordp;
        !           498:        int     _spflg;
        !           499:        tchar   *_linep;
        !           500:        tchar   *_wdend;
        !           501:        tchar   *_wdstart;
        !           502:        int     _wne;
        !           503:        int     _ne;
        !           504:        int     _nc;
        !           505:        int     _nb;
        !           506:        int     _lnmod;
        !           507:        int     _nwd;
        !           508:        int     _nn;
        !           509:        int     _ni;
        !           510:        int     _ul;
        !           511:        int     _cu;
        !           512:        int     _ce;
        !           513:        int     _in;
        !           514:        int     _in1;
        !           515:        int     _un;
        !           516:        int     _wch;
        !           517:        int     _pendt;
        !           518:        tchar   *_pendw;
        !           519:        int     _pendnf;
        !           520:        int     _spread;
        !           521:        int     _it;
        !           522:        int     _itmac;
        !           523:        int     _lnsize;
        !           524:        tchar   *_hyptr[NHYP];
        !           525:        int     _tabtab[NTAB];
        !           526:        tchar   _line[LNSIZE];
        !           527:        tchar   _word[WDSIZE];
        !           528: } env;

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