forked from woo-j/OkapiBarcode
-
Notifications
You must be signed in to change notification settings - Fork 0
/
MsiPlessey.java
208 lines (173 loc) · 6.41 KB
/
MsiPlessey.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
/*
* Copyright 2014 Robin Stuart
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package uk.org.okapibarcode.backend;
/**
* <p>Implements the MSI (Modified Plessey) bar code symbology.
*
* <p>MSI Plessey can encode a string of numeric digits and has a range of check digit options.
*
* @author <a href="mailto:[email protected]">Robin Stuart</a>
*/
public class MsiPlessey extends Symbol {
public enum CheckDigit {
NONE, MOD10, MOD10_MOD10, MOD11, MOD11_MOD10
}
private final static String[] MSI_PLESS_TABLE = {
"12121212", "12121221", "12122112", "12122121", "12211212", "12211221",
"12212112", "12212121", "21121212", "21121221"
};
private CheckDigit checkDigit = CheckDigit.NONE;
/**
* Set the check digit scheme to use. Options are: None, Modulo-10,
* 2 x Modulo-10, Modulo-11 and Modulo-11 & 10.
*
* @param checkDigit the type of check digit to add to symbol
*/
public void setCheckDigit(CheckDigit checkDigit) {
this.checkDigit = checkDigit;
}
/**
* Returns the check digit scheme being used.
*
* @return the check digit scheme being used
*/
public CheckDigit getCheckDigit() {
return checkDigit;
}
@Override
protected void encode() {
String intermediate;
int length = content.length();
int i;
String evenString;
String oddString;
String addupString;
int spacer;
int addup;
int weight;
int checkDigit1;
int checkDigit2;
if (!content.matches("[0-9]+")) {
throw new OkapiException("Invalid characters in input");
}
intermediate = "21"; // Start
for (i = 0; i < length; i++) {
intermediate += MSI_PLESS_TABLE[Character.getNumericValue(content.charAt(i))];
}
readable = content;
if (checkDigit == CheckDigit.MOD10 || checkDigit == CheckDigit.MOD10_MOD10) {
/* Add Modulo-10 check digit */
evenString = "";
oddString = "";
spacer = content.length() & 1;
for (i = content.length() - 1; i >= 0; i--) {
if (spacer == 1) {
if ((i & 1) != 0) {
evenString = content.charAt(i) + evenString;
} else {
oddString = content.charAt(i) + oddString;
}
} else {
if ((i & 1) != 0) {
oddString = content.charAt(i) + oddString;
} else {
evenString = content.charAt(i) + evenString;
}
}
}
if (oddString.length() == 0) {
addupString = "0";
} else {
addupString = Integer.toString(Integer.parseInt(oddString) * 2);
}
addupString += evenString;
addup = 0;
for(i = 0; i < addupString.length(); i++) {
addup += addupString.charAt(i) - '0';
}
checkDigit1 = 10 - (addup % 10);
if (checkDigit1 == 10) {
checkDigit1 = 0;
}
intermediate += MSI_PLESS_TABLE[checkDigit1];
readable += checkDigit1;
}
if (checkDigit == CheckDigit.MOD11 || checkDigit == CheckDigit.MOD11_MOD10) {
/* Add a Modulo-11 check digit */
weight = 2;
addup = 0;
for (i = content.length() - 1; i >= 0; i--) {
addup += (content.charAt(i) - '0') * weight;
weight++;
if (weight == 8) {
weight = 2;
}
}
checkDigit1 = 11 - (addup % 11);
if (checkDigit1 == 11) {
checkDigit1 = 0;
}
readable += checkDigit1;
if (checkDigit1 == 10) {
intermediate += MSI_PLESS_TABLE[1];
intermediate += MSI_PLESS_TABLE[0];
} else {
intermediate += MSI_PLESS_TABLE[checkDigit1];
}
}
if (checkDigit == CheckDigit.MOD10_MOD10 || checkDigit == CheckDigit.MOD11_MOD10) {
/* Add a second Modulo-10 check digit */
evenString = "";
oddString = "";
spacer = readable.length() & 1;
for (i = readable.length() - 1; i >= 0; i--) {
if (spacer == 1) {
if ((i & 1) != 0) {
evenString = readable.charAt(i) + evenString;
} else {
oddString = readable.charAt(i) + oddString;
}
} else {
if ((i & 1) != 0) {
oddString = readable.charAt(i) + oddString;
} else {
evenString = readable.charAt(i) + evenString;
}
}
}
if(oddString.length() == 0) {
addupString = "0";
} else {
addupString = Integer.toString(Integer.parseInt(oddString) * 2);
}
addupString += evenString;
addup = 0;
for(i = 0; i < addupString.length(); i++) {
addup += addupString.charAt(i) - '0';
}
checkDigit2 = 10 - (addup % 10);
if (checkDigit2 == 10) {
checkDigit2 = 0;
}
intermediate += MSI_PLESS_TABLE[checkDigit2];
readable += checkDigit2;
}
intermediate += "121"; // Stop
pattern = new String[] { intermediate };
row_count = 1;
row_height = new int[] { -1 };
}
}