split jim_jtag_command into multiple handlers
[openocd.git] / src / hello.c
1 /***************************************************************************
2 * Copyright (C) 2009 Zachary T Welch <zw@superlucidity.net> *
3 * *
4 * This program is free software; you can redistribute it and/or modify *
5 * it under the terms of the GNU General Public License as published by *
6 * the Free Software Foundation; either version 2 of the License, or *
7 * (at your option) any later version. *
8 * *
9 * This program is distributed in the hope that it will be useful, *
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
12 * GNU General Public License for more details. *
13 * *
14 * You should have received a copy of the GNU General Public License *
15 * along with this program; if not, write to the *
16 * Free Software Foundation, Inc., *
17 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
18 ***************************************************************************/
19
20 #ifdef HAVE_CONFIG_H
21 #include <config.h>
22 #endif
23 #include "log.h"
24
25 COMMAND_HANDLER(handle_foo_command)
26 {
27 if (CMD_ARGC < 1 || CMD_ARGC > 2)
28 {
29 LOG_ERROR("%s: incorrect number of arguments", CMD_NAME);
30 return ERROR_COMMAND_SYNTAX_ERROR;
31 }
32
33 uint32_t address;
34 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], address);
35
36 const char *msg = "<unchanged>";
37 if (CMD_ARGC == 2)
38 {
39 bool enable;
40 COMMAND_PARSE_ENABLE(CMD_ARGV[1], enable);
41 msg = enable ? "enable" : "disable";
42 }
43
44 LOG_INFO("%s: address=0x%8.8" PRIx32 " enabled=%s", CMD_NAME, address, msg);
45 return ERROR_OK;
46 }
47
48 static bool foo_flag;
49
50 COMMAND_HANDLER(handle_flag_command)
51 {
52 return CALL_COMMAND_HANDLER(handle_command_parse_bool,
53 &foo_flag, "foo flag");
54 }
55
56 static const struct command_registration foo_command_handlers[] = {
57 {
58 .name = "bar",
59 .handler = &handle_foo_command,
60 .mode = COMMAND_ANY,
61 .help = "<address> [enable|disable] - an example command",
62 },
63 {
64 .name = "baz",
65 .handler = &handle_foo_command,
66 .mode = COMMAND_ANY,
67 .help = "<address> [enable|disable] - a sample command",
68 },
69 {
70 .name = "flag",
71 .handler = &handle_flag_command,
72 .mode = COMMAND_ANY,
73 .help = "[on|off] - set a flag",
74 },
75 COMMAND_REGISTRATION_DONE
76 };
77
78 static COMMAND_HELPER(handle_hello_args, const char **sep, const char **name)
79 {
80 if (CMD_ARGC > 1)
81 {
82 LOG_ERROR("%s: too many arguments", CMD_NAME);
83 return ERROR_COMMAND_SYNTAX_ERROR;
84 }
85 if (1 == CMD_ARGC)
86 {
87 *sep = " ";
88 *name = CMD_ARGV[0];
89 }
90 else
91 *sep = *name = "";
92
93 return ERROR_OK;
94 }
95 COMMAND_HANDLER(handle_hello_command)
96 {
97 const char *sep, *name;
98 int retval = CALL_COMMAND_HANDLER(handle_hello_args, &sep, &name);
99 if (ERROR_OK == retval)
100 command_print(CMD_CTX, "Greetings%s%s!", sep, name);
101 return retval;
102 }
103
104 const struct command_registration hello_command_handlers[] = {
105 {
106 .name = "hello",
107 .handler = &handle_hello_command,
108 .mode = COMMAND_ANY,
109 .help = "prints a warm welcome",
110 .usage = "[<name>]",
111 },
112 {
113 .name = "foo",
114 .mode = COMMAND_ANY,
115 .help = "example command handler skeleton",
116
117 .chain = foo_command_handlers,
118 },
119 COMMAND_REGISTRATION_DONE
120 };
121
122 int hello_register_commands(struct command_context *cmd_ctx)
123 {
124 return register_commands(cmd_ctx, NULL, hello_command_handlers);
125 }