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1 | | -package com.paulsen.io; |
2 | | - |
3 | | -public class CustomProtocol { |
4 | | - |
5 | | - private String IDENTIFIER = "CP"; |
6 | | - |
7 | | - private char BLOCK_START = '[', BLOCK_END = ']'; |
8 | | - /** |
9 | | - * Replacement if start- or end-character is included in data (1)=> store data |
10 | | - * with replaced characters (2)=> read data with replacements back replaced to |
11 | | - * start or end |
12 | | - */ |
13 | | - private String START_REPLACEMENT = "^<<^", END_REPLACEMENT = "^>>^"; |
14 | | - |
15 | | - public CustomProtocol() { |
16 | | - } |
17 | | - |
18 | | - public CustomProtocol(String identifier, char blockStart, char blockEnd, String startReplacement, |
19 | | - String endRemplacement) { |
20 | | - IDENTIFIER = identifier; |
21 | | - BLOCK_START = blockStart; |
22 | | - BLOCK_END = blockEnd; |
23 | | - START_REPLACEMENT = startReplacement; |
24 | | - END_REPLACEMENT = endRemplacement; |
25 | | - } |
26 | | - |
27 | | - public boolean isPartOfProtocol(String s) { |
28 | | - s = trimEnd(trimStart(s)); |
29 | | - // Message must start immediatley with IDENTIFIER and BLOCK_START |
30 | | - if (s.startsWith(IDENTIFIER + BLOCK_START) && s.endsWith(String.valueOf(BLOCK_END))) { |
31 | | - String message = removeStart(s, IDENTIFIER.length()); |
32 | | - // Message can only contain BLOCK_START && BLOCK_END once |
33 | | - if (count(message, BLOCK_START) != 1 || count(message, BLOCK_END) != 1) { |
34 | | - return false; |
35 | | - } |
36 | | - return true; |
37 | | - } |
38 | | - return false; |
39 | | - } |
40 | | - |
41 | | - /** |
42 | | - * @param Protocol-Output |
43 | | - * @return Message |
44 | | - */ |
45 | | - public String getMessage(String input) { |
46 | | - if (isPartOfProtocol(input)) { |
47 | | - String message = removeStart(trimEnd(trimStart(input)), IDENTIFIER.length()); |
48 | | - |
49 | | - // remove block-character and fill replcements |
50 | | - String mN = ""; |
51 | | - for (int i = 1; i < message.length() - 1; i++) |
52 | | - mN += message.charAt(i); |
53 | | - message = mN.replace(START_REPLACEMENT, String.valueOf(BLOCK_START)).replace(END_REPLACEMENT, |
54 | | - String.valueOf(BLOCK_END)); |
55 | | - |
56 | | - return message; |
57 | | - } |
58 | | - return null; |
59 | | - } |
60 | | - |
61 | | - /** |
62 | | - * @param Message that gets convertet into the protocol-format |
63 | | - * @return Protocol-Output |
64 | | - */ |
65 | | - public String getProtocolOutput(String message) { |
66 | | - return IDENTIFIER + BLOCK_START + message.replace(String.valueOf(BLOCK_START), START_REPLACEMENT) |
67 | | - .replace(String.valueOf(BLOCK_END), END_REPLACEMENT) + BLOCK_END; |
68 | | - } |
69 | | - |
70 | | - private static String trimStart(String sIn) { |
71 | | - String s = ""; |
72 | | - boolean hasBeenStart = false; |
73 | | - for (int i = 0; i < sIn.length(); i++) { |
74 | | - if (sIn.charAt(i) != ' ') |
75 | | - hasBeenStart = true; |
76 | | - if (hasBeenStart) |
77 | | - s += sIn.charAt(i); |
78 | | - } |
79 | | - return s; |
80 | | - } |
81 | | - |
82 | | - private static String removeStart(String in, int length) { |
83 | | - String s = ""; |
84 | | - for (int i = length; i < in.length(); i++) |
85 | | - s += in.charAt(i); |
86 | | - return s; |
87 | | - } |
88 | | - |
89 | | - private static String trimEnd(String sIn) { |
90 | | - String s = ""; |
91 | | - boolean hasBeenEnd = false; |
92 | | - for (int i = sIn.length() - 1; i >= 0; i--) { |
93 | | - if (sIn.charAt(i) != ' ') |
94 | | - hasBeenEnd = true; |
95 | | - if (hasBeenEnd) |
96 | | - s = sIn.charAt(i) + s; |
97 | | - } |
98 | | - return s; |
99 | | - } |
100 | | - |
101 | | - private static int count(String s, char c) { |
102 | | - int count = 0; |
103 | | - for (int i = 0; i < s.length(); i++) { |
104 | | - if (s.charAt(i) == c) |
105 | | - count++; |
106 | | - } |
107 | | - return count; |
108 | | - } |
109 | | -} |
| 1 | +package com.paulsen.io; |
| 2 | + |
| 3 | +public class PCustomProtocol { |
| 4 | + |
| 5 | + private String IDENTIFIER = "CP"; |
| 6 | + |
| 7 | + private char BLOCK_START = '[', BLOCK_END = ']'; |
| 8 | + /** |
| 9 | + * Replacement if start- or end-character is included in data (1)=> store data |
| 10 | + * with replaced characters (2)=> read data with replacements back replaced to |
| 11 | + * start or end |
| 12 | + */ |
| 13 | + private String START_REPLACEMENT = "^<<^", END_REPLACEMENT = "^>>^"; |
| 14 | + |
| 15 | + public PCustomProtocol() { |
| 16 | + } |
| 17 | + |
| 18 | + public PCustomProtocol(String identifier, char blockStart, char blockEnd, String startReplacement, |
| 19 | + String endRemplacement) { |
| 20 | + IDENTIFIER = identifier; |
| 21 | + BLOCK_START = blockStart; |
| 22 | + BLOCK_END = blockEnd; |
| 23 | + START_REPLACEMENT = startReplacement; |
| 24 | + END_REPLACEMENT = endRemplacement; |
| 25 | + } |
| 26 | + |
| 27 | + public boolean isPartOfProtocol(String s) { |
| 28 | + s = trimEnd(trimStart(s)); |
| 29 | + // Message must start immediatley with IDENTIFIER and BLOCK_START |
| 30 | + if (s.startsWith(IDENTIFIER + BLOCK_START) && s.endsWith(String.valueOf(BLOCK_END))) { |
| 31 | + String message = removeStart(s, IDENTIFIER.length()); |
| 32 | + // Message can only contain BLOCK_START && BLOCK_END once |
| 33 | + if (count(message, BLOCK_START) != 1 || count(message, BLOCK_END) != 1) { |
| 34 | + return false; |
| 35 | + } |
| 36 | + return true; |
| 37 | + } |
| 38 | + return false; |
| 39 | + } |
| 40 | + |
| 41 | + /** |
| 42 | + * @param Protocol-Output |
| 43 | + * @return Message |
| 44 | + */ |
| 45 | + public String getMessage(String input) { |
| 46 | + if (isPartOfProtocol(input)) { |
| 47 | + String message = removeStart(trimEnd(trimStart(input)), IDENTIFIER.length()); |
| 48 | + |
| 49 | + // remove block-character and fill replcements |
| 50 | + String mN = ""; |
| 51 | + for (int i = 1; i < message.length() - 1; i++) |
| 52 | + mN += message.charAt(i); |
| 53 | + message = mN.replace(START_REPLACEMENT, String.valueOf(BLOCK_START)).replace(END_REPLACEMENT, |
| 54 | + String.valueOf(BLOCK_END)); |
| 55 | + |
| 56 | + return message; |
| 57 | + } |
| 58 | + return null; |
| 59 | + } |
| 60 | + |
| 61 | + /** |
| 62 | + * @param Message that gets convertet into the protocol-format |
| 63 | + * @return Protocol-Output |
| 64 | + */ |
| 65 | + public String getProtocolOutput(String message) { |
| 66 | + return IDENTIFIER + BLOCK_START + message.replace(String.valueOf(BLOCK_START), START_REPLACEMENT) |
| 67 | + .replace(String.valueOf(BLOCK_END), END_REPLACEMENT) + BLOCK_END; |
| 68 | + } |
| 69 | + |
| 70 | + private static String trimStart(String sIn) { |
| 71 | + String s = ""; |
| 72 | + boolean hasBeenStart = false; |
| 73 | + for (int i = 0; i < sIn.length(); i++) { |
| 74 | + if (sIn.charAt(i) != ' ') |
| 75 | + hasBeenStart = true; |
| 76 | + if (hasBeenStart) |
| 77 | + s += sIn.charAt(i); |
| 78 | + } |
| 79 | + return s; |
| 80 | + } |
| 81 | + |
| 82 | + private static String removeStart(String in, int length) { |
| 83 | + String s = ""; |
| 84 | + for (int i = length; i < in.length(); i++) |
| 85 | + s += in.charAt(i); |
| 86 | + return s; |
| 87 | + } |
| 88 | + |
| 89 | + private static String trimEnd(String sIn) { |
| 90 | + String s = ""; |
| 91 | + boolean hasBeenEnd = false; |
| 92 | + for (int i = sIn.length() - 1; i >= 0; i--) { |
| 93 | + if (sIn.charAt(i) != ' ') |
| 94 | + hasBeenEnd = true; |
| 95 | + if (hasBeenEnd) |
| 96 | + s = sIn.charAt(i) + s; |
| 97 | + } |
| 98 | + return s; |
| 99 | + } |
| 100 | + |
| 101 | + private static int count(String s, char c) { |
| 102 | + int count = 0; |
| 103 | + for (int i = 0; i < s.length(); i++) { |
| 104 | + if (s.charAt(i) == c) |
| 105 | + count++; |
| 106 | + } |
| 107 | + return count; |
| 108 | + } |
| 109 | +} |
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