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/* cli.h:
* Header file for Command Line Interface related stuff.
*
* General notice:
* This code is part of a boot-monitor package developed as a generic base
* platform for embedded system designs. As such, it is likely to be
* distributed to various projects beyond the control of the original
* author. Please notify the author of any enhancements made or bugs found
* so that all may benefit from the changes. In addition, notification back
* to the author will allow the new user to pick up changes that may have
* been made by other users after this version of the code was distributed.
*
* Note1: the majority of this code was edited with 4-space tabs.
* Note2: as more and more contributions are accepted, the term "author"
* is becoming a mis-representation of credit.
*
* Original author: Ed Sutter
* Email: esutter@lucent.com
* Phone: 908-582-2351
*/
#ifndef _cli_h
#define _cli_h
#ifdef __cplusplus
extern "C" {
#endif
/* Command table structure used by the monitor:
*/
struct monCommand {
char *name; /* Name of command seen by user. */
int (*func)(int,char **); /* Called when command is invoked. */
char **helptxt; /* Help text (see notes below). */
long flags; /* Single-bit flags for various uses */
/* (see the CMDFLAG_XXX macros). */
};
#ifdef __cplusplus
}
#endif
/* Bits currently assigned to command flags used in the monCommand
* structure...
*/
#define CMDFLAG_NOMONRC 1
/* Maximum size of a command line:
*/
#ifndef CMDLINESIZE
#define CMDLINESIZE 128
#endif
/* Maximum number of arguments in a command line:
*/
#define ARGCNT 24
/* Definitions for docommand() return values:
*
* Note that the CMD_SUCCESS, CMD_FAILURE and CMD_PARAM_ERROR are return
* values used by the local command code also. The remaining errors
* (CMD_LINE_ERROR, CMD_ULVL_DENIED and CMD_NOT_FOUND) are used only by
# the docommand() function.
*
* CMD_SUCCESS:
* Everything worked ok.
* CMD_FAILURE:
* Command parameters were valid, but command itself failed for some other
* reason. The docommand() function does not print a message here, it
* is assumed that the error message was printed by the local function.
* CMD_PARAM_ERROR:
* Command line did not parse properly. Control was passed to a
* local command function, but argument syntax caused it to choke.
* In this case docommand() will print out the generic CLI syntax error
* message.
* CMD_LINE_ERROR:
* Command line itself was invalid. Too many args, invalid shell var
* syntax, etc.. Somekind of command line error prior to checking for
* the command name-to-function match.
* CMD_ULVL_DENIED:
* Command's user level is higher than current user level, so access
* is denied.
* CMD_NOT_FOUND:
* Since these same return values are used for each command function
* plus the docommand() function, this error indicates that docommand()
* could not even find the command in the command table.
* CMD_MONRC_DENIED:
* The command cannot execute because it is considered illegal
* when run from within the monrc file.
*/
#define CMD_SUCCESS 0
#define CMD_FAILURE -1
#define CMD_PARAM_ERROR -2
#define CMD_LINE_ERROR -3
#define CMD_ULVL_DENIED -4
#define CMD_NOT_FOUND -5
#define CMD_MONRC_DENIED -6
/* Notes on help text array:
* The monitor's CLI processor assumes that every command's help text
* array abides by a few basic rules...
* First of all, it assumes that every array has AT LEAST two strings.
* The first string in the array of strings is assumed to be a one-line
* abstract describing the command.
* The second string in the array of strings is assumed to be a usage
* message that describes the syntax of the arguments needed by the command.
* If this second string is an empty string (""), the docommand() prints out
* a generic usage string indicating that there are no options or arguements
* to apply to the command.
* All remaining lines are formatted based on the needs of the individual
* command and the final string is a null pointer to let the CLI processor
* know where the end is.
* Following is an example help text array...
*
* char *HelpHelp[] = {
* "Display command set",
* "-[d] [commandname]",
* "Options:",
* " -d list commands and descriptions",
* 0,
* };
*
*/
#endif
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