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dshlib.h 1.13 KiB
#ifndef __DSHLIB_H__
#define __DSHLIB_H__
// Constants for command structure sizes
#define EXE_MAX 64
#define ARG_MAX 256
#define CMD_MAX 8
// Longest command that can be read from the shell
#define SH_CMD_MAX EXE_MAX + ARG_MAX
typedef struct command
{
char exe[EXE_MAX];
char args[ARG_MAX];
} command_t;
typedef struct command_list
{
int num;
command_t commands[CMD_MAX];
} command_list_t;
// Special character #defines
#define SPACE_CHAR ' '
#define SPACE_STRING " "
#define PIPE_CHAR '|'
#define PIPE_STRING "|"
#define SH_PROMPT "dsh> "
#define EXIT_CMD "exit"
// Standard Return Codes
#define OK 0
#define WARN_NO_CMDS -1
#define ERR_TOO_MANY_COMMANDS -2
#define ERR_CMD_OR_ARGS_TOO_BIG -3
// starter code
#define M_NOT_IMPL "The requested operation is not implemented yet!\n"
#define EXIT_NOT_IMPL 3
#define NOT_IMPLEMENTED_YET 0
// prototypes
int build_cmd_list(char *cmd_line, command_list_t *clist);
// output constants
#define CMD_OK_HEADER "PARSED COMMAND LINE - TOTAL COMMANDS %d\n"
#define CMD_WARN_NO_CMD "warning: no commands provided\n"
#define CMD_ERR_PIPE_LIMIT "error: piping limited to %d commands\n"
#endif