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Annotation of researchv9/jerq/src/sam/mesg.h, revision 1.1.1.1

1.1       root        1: #define        TBLOCKSIZE 512            /* largest piece of text sent to terminal */
                      2: #define        DATASIZE  (TBLOCKSIZE+30) /* ... including protocol header stuff */
                      3: /*
                      4:  * Messages originating at the terminal
                      5:  */
                      6: typedef enum Tmesg{
                      7:        Tcut,
                      8:        Tpaste,
                      9:        Tsnarf,
                     10:        Ttype,          /* add some characters, but terminal already knows */
                     11:        Trequest,       /* request data to fill a hole */
                     12:        Tstartfile,     /* terminal just opened a file's frame */
                     13:        Tstartnewfile,  /* terminal just opened a new frame */
                     14:        Tstartcmdfile,  /* terminal just opened command frame */
                     15:        Tworkfile,      /* set file to which commands apply */
                     16:        Twrite,         /* write file */
                     17:        Tcheck,         /* ask host to poke with Hcheck */
                     18:        Torigin,        /* gimme an Horigin near here */
                     19:        Tclose,         /* terminal requests file close; check mod. status */
                     20:        Tsearch,        /* search for last regular expression */
                     21:        Tlook,          /* search for literal current text */
                     22:        Tsend,          /* pretend he typed stuff */
                     23:        Tunlockfile,    /* Hunlockfile me */
                     24:        Tstartsnarf,    /* initiate snarf buffer exchange */
                     25:        Tsetsnarf,      /* remember string in snarf buffer */
                     26:        Tdclick,        /* double click */
                     27:        Texit,          /* exit */
                     28: }Tmesg;
                     29: /*
                     30:  * Messages originating at the host
                     31:  */
                     32: typedef enum Hmesg{
                     33:        Hnewname,       /* create "" name in menu */
                     34:        Hdelname,       /* delete file name from menu */
                     35:        Hmovname,       /* move file name in menu */
                     36:        Hbindname,      /* attach name[0] to text in terminal */
                     37:        Hcurrent,       /* make named file the typing file */
                     38:        Hgrow,          /* insert space in rasp */
                     39:        Hdata,          /* store this data in previously allocated space */
                     40:        Hgrowdata,      /* Hgrow + Hdata folded together */
                     41:        Hcut,           /* remove space from rasp */
                     42:        Hclean,         /* named file is now 'clean' */
                     43:        Hdirty,         /* named file is now 'dirty' */
                     44:        Hcheck0,        /* see below */
                     45:        Hcheck,         /* ask terminal to check whether it needs more data */
                     46:        Hmoveto,        /* scrolling, context search, etc. */
                     47:        Hsetdot,        /* set dot in terminal */
                     48:        Horigin,        /* set origin of file/frame in terminal */
                     49:        Hclose,         /* close file and remove from menu */
                     50:        Hunlock,        /* command is finished; user can do things */
                     51:        Hsetpat,        /* set remembered regular expression */
                     52:        Hunlockfile,    /* unlock file in terminal */
                     53:        Hsetsnarf,      /* remember string in snarf buffer */
                     54:        Hsnarflen,      /* report length of implicit snarf */
                     55:        Hexit,
                     56: }Hmesg;
                     57: typedef struct Header{
                     58:        uchar   type;           /* one of the above */
                     59:        uchar   count0;         /* low bits of data size */
                     60:        uchar   count1;         /* high bits of data size */
                     61:        uchar   data[1];        /* variable size */
                     62: }Header;
                     63: /*
                     64:  * File transfer protocol schematic, a la Holzmann
                     65:  *     
                     66:  *     proc h
                     67:  *     {       pvar n = 0;
                     68:  *             queue h[4];
                     69:  *     
                     70:  *             do
                     71:  *             :: (n <  N)  -> n++; t!Hgrow
                     72:  *             :: (n == N)  -> n++; t!Hcheck0
                     73:  *             :: h?Trequest -> t!Hdata
                     74:  *             :: h?Tcheck  -> t!Hcheck
                     75:  *             od
                     76:  *     }
                     77:  *     proc t
                     78:  *     {       queue t[4];
                     79:  *             do
                     80:  *             :: t?Hgrow -> h!Trequest
                     81:  *             :: t?Hdata -> skip
                     82:  *             :: t?Hcheck0 -> h!Tcheck
                     83:  *             :: t?Hcheck ->
                     84:  *                     if
                     85:  *                     :: break
                     86:  *                     :: h!Trequest; h!Tcheck
                     87:  *                     fi
                     88:  *             od
                     89:  *     }
                     90:  */

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