2.9BSD - /usr/src/ucb/vsh/command.h

   1: /* There are two important structures used by the command processor.
   2:    Cmdtab encodes the current commands.  Each command corresponds to
   3:    an element in cmdtab and is type struct cmdstruct.  Four fields
   4:    determine the command.  Cmd_char is the character which, when
   5:    pressed, calls the command.  Cmd_proc is the procedure which
   6:    runs the command.  Cmd_argv is used as a parameter to that proc.
   7:    Cmd_xdir, when on, indicates the command may be run anywhere, and
   8:    not just on the directory page.
   9: 
  10:    The classtab is used to map statements from the .vshrc file to
  11:    cmdtab elements.  The keyword in a .vshrc statement is looked
  12:    up in classtab, and then the classtab element is used to load
  13:    the cmdtab element.
  14: */
  15: 
  16: struct classstruct {        /* Classification structure */
  17:     char * cl_name;     /* Name (key word) */
  18:     int (*cl_proc)();   /* Command procedure */
  19:     short cl_count;     /* Number of args */
  20:     char cl_xdir;       /* Is ok outside dir page */
  21: };
  22: 
  23: struct cmdstruct {      /* Command structure */
  24:     char cmd_char;      /* Command char */
  25:     int  (*cmd_proc)(); /* Command procedure */
  26:     char ** cmd_argv;   /* Array of arguments for command */
  27:     char cmd_xdir;      /* Is ok outside dir page */
  28: };
  29: 
  30: struct classstruct *classloc();
  31: struct cmdstruct   *cmdloc  ();
  32: extern (*cmdproc ())();
  33: 
  34: extern struct classstruct classtab[];
  35: extern struct cmdstruct   cmdtab[];
  36: 
  37: /* Command characters for important commands */
  38: 
  39: #define CMD_DATE    0x80
  40: #define CMD_SE      0x81
  41: #define CMD_SG      0x82

Defined struct's

Defined macros

Usage of this include