src/commandline/commands/help.c

   1 #include "command.h"
   2 #include "console.h"
   3 #include <string.h>
   4 #include <gpxe/tables.h>
   5
   6 static struct command cmd_start[0] __table_start ( commands );
   7 static struct command cmd_end[0] __table_end ( commands );
   8
   9 void help_req(){}
  10
  11 static int cmd_help_exec ( int argc, char **argv ) {
  12
  13         struct command *ccmd;
  14         int unknown = 1;
  15         if(argc == 1){
  16                 printf("Available commands:\n\n  exit - Exit the command line and boot\n");
  17
  18                 for ( ccmd = cmd_start ; ccmd < cmd_end ; ccmd++ ) {
  19                         printf ("  %s - %s\n", ccmd->name, ccmd->desc );
  20                 }
  21         }else{
  22                 if(!strcmp(argv[1], "exit") || !strcmp(argv[1], "quit")){
  23                         printf("exit - Exit the command line and boot\n\nUsage:\n  exit\n");
  24                 }else{
  25                         for ( ccmd = cmd_start ; ccmd < cmd_end ; ccmd++ ) {
  26                                 if(!strcmp(ccmd->name, argv[1])){
  27                                         unknown = 0;
  28                                         printf ("%s - %s\n\nUsage:\n  %s\n", ccmd->name, ccmd->desc, ccmd->usage );
  29                                         break;
  30                                 }
  31                         }
  32                         if(unknown){
  33                                 printf("\"%s\" isn't compiled in (does it exist?).\n", argv[1]);
  34                         }
  35                 }
  36
  37         }
  38         return 0;
  39 }
  40
  41 struct command help_command __command = {
  42         .name = "help",
  43         .usage = "help <command>\n\nExample:\n  help help\n",
  44         .desc = "The help command",
  45         .exec = cmd_help_exec,
  46 };
  47
  48