src/hello.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2
   3 /***************************************************************************
   4  *   Copyright (C) 2009 Zachary T Welch <zw@superlucidity.net>             *
   5  ***************************************************************************/
   6
   7 #ifdef HAVE_CONFIG_H
   8 #include <config.h>
   9 #endif
  10 #include <helper/log.h>
  11 #include "hello.h"
  12
  13 COMMAND_HANDLER(handle_foo_command)
  14 {
  15         if (CMD_ARGC < 1 || CMD_ARGC > 2)
  16                 return ERROR_COMMAND_SYNTAX_ERROR;
  17
  18         uint32_t address;
  19         COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], address);
  20
  21         const char *msg = "<unchanged>";
  22         if (CMD_ARGC == 2) {
  23                 bool enable;
  24                 COMMAND_PARSE_ENABLE(CMD_ARGV[1], enable);
  25                 msg = enable ? "enable" : "disable";
  26         }
  27
  28         LOG_INFO("%s: address=0x%8.8" PRIx32 " enabled=%s", CMD_NAME, address, msg);
  29         return ERROR_OK;
  30 }
  31
  32 static bool foo_flag;
  33
  34 COMMAND_HANDLER(handle_flag_command)
  35 {
  36         return CALL_COMMAND_HANDLER(handle_command_parse_bool,
  37                 &foo_flag, "foo flag");
  38 }
  39
  40 static const struct command_registration foo_command_handlers[] = {
  41         {
  42                 .name = "bar",
  43                 .handler = &handle_foo_command,
  44                 .mode = COMMAND_ANY,
  45                 .usage = "address ['enable'|'disable']",
  46                 .help = "an example command",
  47         },
  48         {
  49                 .name = "baz",
  50                 .handler = &handle_foo_command,
  51                 .mode = COMMAND_ANY,
  52                 .usage = "address ['enable'|'disable']",
  53                 .help = "a sample command",
  54         },
  55         {
  56                 .name = "flag",
  57                 .handler = &handle_flag_command,
  58                 .mode = COMMAND_ANY,
  59                 .usage = "[on|off]",
  60                 .help = "set a flag",
  61         },
  62         COMMAND_REGISTRATION_DONE
  63 };
  64
  65 static COMMAND_HELPER(handle_hello_args, const char **sep, const char **name)
  66 {
  67         if (CMD_ARGC > 1)
  68                 return ERROR_COMMAND_SYNTAX_ERROR;
  69         if (1 == CMD_ARGC) {
  70                 *sep = " ";
  71                 *name = CMD_ARGV[0];
  72         } else
  73                 *sep = *name = "";
  74
  75         return ERROR_OK;
  76 }
  77 COMMAND_HANDLER(handle_hello_command)
  78 {
  79         const char *sep, *name;
  80         int retval = CALL_COMMAND_HANDLER(handle_hello_args, &sep, &name);
  81         if (retval == ERROR_OK)
  82                 command_print(CMD, "Greetings%s%s!", sep, name);
  83         return retval;
  84 }
  85
  86 const struct command_registration hello_command_handlers[] = {
  87         {
  88                 .name = "hello",
  89                 .handler = handle_hello_command,
  90                 .mode = COMMAND_ANY,
  91                 .help = "prints a warm welcome",
  92                 .usage = "[name]",
  93         },
  94         {
  95                 .name = "foo",
  96                 .mode = COMMAND_ANY,
  97                 .help = "example command handler skeleton",
  98                 .chain = foo_command_handlers,
  99                 .usage = "",
 100         },
 101         COMMAND_REGISTRATION_DONE
 102 };