446b1947b26c6103c7b54bb5a401ffe5f87ac00a
[jvcard.git] / CommandInstance.java
1 package be.nikiroo.jvcard.remote;
2
3 public class CommandInstance {
4 private Command cmd;
5 private int version;
6 private String param;
7
8 /**
9 * Create a new, empty {@link CommandInstance} with the given
10 * {@link Command} and version.
11 *
12 * @param command
13 * the {@link Command}
14 * @param version
15 * the version
16 */
17 public CommandInstance(Command command, int version) {
18 this(command, null, version);
19 }
20
21 /**
22 * Create a new, empty {@link CommandInstance} with the given
23 * {@link Command} and version.
24 *
25 * @param cmd
26 * the {@link Command}
27 * @param version
28 * the version
29 */
30 public CommandInstance(Command cmd, String param, int version) {
31 this.cmd = cmd;
32 this.version = version;
33 this.param = param;
34 }
35
36 /**
37 * Read a command line (starting with a {@link Command}) and process its
38 * content here in a more readable format.
39 *
40 * @param input
41 * the command line
42 * @param version
43 * the version (which can be overrided by a
44 * {@link Command#VERSION} command)
45 */
46 public CommandInstance(String input, int version) {
47 this.version = version;
48
49 if (input != null) {
50 String v = input;
51 int indexSp = input.indexOf(" ");
52 if (indexSp >= 0) {
53 v = input.substring(0, indexSp);
54 }
55
56 for (Command command : Command.values()) {
57 if (v.equals(command.name())) {
58 this.cmd = command;
59 }
60 }
61
62 if (cmd != null) {
63 String param = null;
64 if (indexSp >= 0)
65 param = input.substring(indexSp + 1);
66
67 this.param = param;
68
69 if (cmd == Command.VERSION) {
70 try {
71 version = Integer.parseInt(param);
72 } catch (NumberFormatException e) {
73 e.printStackTrace();
74 }
75 }
76 }
77 }
78 }
79
80 /**
81 * Return the version
82 *
83 * @return the version
84 */
85 public int getVersion() {
86 return version;
87 }
88
89 /**
90 * Return the {@link Command}
91 *
92 * @return the {@link Command}
93 */
94 public Command getCommand() {
95 return cmd;
96 }
97
98 /**
99 * Return the parameter of this {@link CommandInstance} if any.
100 *
101 * @return the parameter or NULL
102 */
103 public String getParam() {
104 return param;
105 }
106
107 @Override
108 public String toString() {
109 if (cmd == null)
110 return "[null command]";
111
112 switch (cmd) {
113 case VERSION:
114 return cmd.name() + " " + version;
115 default:
116 return cmd.name() + (param == null ? "" : " " + param);
117 }
118 }
119 }