opengnsys_ipxe/src/commandline/commands/help.c

49 lines
1.2 KiB
C

#include "command.h"
#include "console.h"
#include <string.h>
#include <gpxe/tables.h>
static struct command cmd_start[0] __table_start ( commands );
static struct command cmd_end[0] __table_end ( commands );
void help_req(){}
static int cmd_help_exec ( int argc, char **argv ) {
struct command *ccmd;
int unknown = 1;
if(argc == 1){
printf("Built in commands:\n\n\texit, quit\t\tExit the command line and boot\n\nCompiled in commands:\n\n");
for ( ccmd = cmd_start ; ccmd < cmd_end ; ccmd++ ) {
printf ("\t%s\t\t%s\n", ccmd->name, ccmd->desc );
}
}else{
if(!strcmp(argv[1], "exit") || !strcmp(argv[1], "quit")){
printf("exit, quit - The quit command\n\nUsage:\nquit or exit\n\n\tExample:\n\t\texit\n");
}else{
for ( ccmd = cmd_start ; ccmd < cmd_end ; ccmd++ ) {
if(!strcmp(ccmd->name, argv[1])){
unknown = 0;
printf ("\t%s - %s\n\nUsage:\n%s\n", ccmd->name, ccmd->desc, ccmd->usage );
break;
}
}
if(unknown){
printf("\"%s\" isn't compiled in (does it exist?).\n", argv[1]);
}
}
}
return 0;
}
struct command help_command __command = {
.name = "help",
.usage = "help <command>\n\n\tExample:\n\t\thelp help\n",
.desc = "The help command",
.exec = cmd_help_exec,
};