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1
50
51 package com.lowagie.text.pdf;
52
53
54
60
61 public class PdfBarcode extends com.lowagie.text.Chunk {
62
63
64 public static final int CODE39 = 1;
65
66
67 public static final int UPCA = 2;
68
69
70 public static final int EAN13 = 3;
71
72
73 public static final int INTERLEAVED_2_OF_5 = 4;
74
75
76 public static final int[][] variableParity =
77 { {0, 0, 0, 0, 0, 0, 2, 2, 2, 2, 2, 2},
78 {0, 0, 1, 0, 1, 1, 2, 2, 2, 2, 2, 2},
79 {0, 0, 1, 1, 0, 1, 2, 2, 2, 2, 2, 2},
80 {0, 0, 1, 1, 1, 0, 2, 2, 2, 2, 2, 2},
81 {0, 1, 0, 0, 1, 1, 2, 2, 2, 2, 2, 2},
82 {0, 1, 1, 0, 0, 1, 2, 2, 2, 2, 2, 2},
83 {0, 1, 1, 1, 0, 0, 2, 2, 2, 2, 2, 2},
84 {0, 1, 0, 1, 0, 1, 2, 2, 2, 2, 2, 2},
85 {0, 1, 0, 1, 1, 0, 2, 2, 2, 2, 2, 2},
86 {0, 1, 1, 0, 1, 0, 2, 2, 2, 2, 2, 2} };
87
88
95
96 public PdfBarcode(String ttf, int type, int size, String number) throws com.lowagie.text.BadElementException, com.lowagie.text.DocumentException, java.io.IOException {
97 super(convertToCode(type, number), new com.lowagie.text.Font(BaseFont.createFont(ttf, "winansi", true), size));
98 }
99
100
107
108 public PdfBarcode(String ttf, int type, int size, long number) throws com.lowagie.text.BadElementException, com.lowagie.text.DocumentException, java.io.IOException {
109 super(convertToCode(type, String.valueOf(number)), new com.lowagie.text.Font(BaseFont.createFont(ttf, "winansi", true), size));
110 }
111
112
118
119 private static String convertToCode(int type, String number) throws com.lowagie.text.BadElementException {
120 StringBuffer code = new StringBuffer();
121 int length = number.length();
122 int digit;
123 int pos = 0;
124 try {
125 switch(type) {
126 case CODE39:
127 code.append('*');
128 while (pos < length) {
129 code.append(number.substring(pos, ++pos));
130 }
131 code.append('*');
132 break;
133 case UPCA:
134 if (length > 12) throw new com.lowagie.text.BadElementException("An UPC-A barcode can only encode a 12 digit number (your number was " + number + ").");
135 number = addZero(number, 12);
136 digit = Integer.parseInt(number.substring(pos, ++pos));
137 code.append((char) (digit + 80));
138 while (pos < 6) {
139 digit = Integer.parseInt(number.substring(pos, ++pos));
140 code.append((char) (digit + 48));
141 }
142 code.append((char) 112);
143 while (pos < 11) {
144 digit = Integer.parseInt(number.substring(pos, ++pos));
145 code.append((char) (digit + 64));
146 }
147 digit = Integer.parseInt(number.substring(11));
148 code.append((char) (digit + 96));
149 break;
150 case EAN13:
151 if (length > 13) throw new com.lowagie.text.BadElementException("An EAN-13 barcode can only encode a 13 digit number (your number was " + number + ").");
152 number = addZero(number, 13);
153 int firstdigit = Integer.parseInt(number.substring(pos, ++pos));
154 code.append((char) (firstdigit + 33));
155 digit = Integer.parseInt(number.substring(pos, ++pos));
156 code.append((char) (digit + 96));
157 while (pos < 7) {
158 digit = Integer.parseInt(number.substring(pos, ++pos));
159 code.append((char) (digit + 48 + 16 * variableParity[firstdigit][pos - 2]));
160 }
161 code.append((char) 124);
162 while (pos < 12) {
163 digit = Integer.parseInt(number.substring(pos, ++pos));
164 code.append((char) (digit + 48 + 16 * variableParity[firstdigit][pos - 2]));
165 }
166 digit = Integer.parseInt(number.substring(12));
167 code.append((char) (digit + 112));
168 break;
169 case INTERLEAVED_2_OF_5:
170 if (length % 2 == 1) {
171 number = addZero(number, length + 1);
172 }
173 code.append('(');
174 while (number.length() > 2) {
175 digit = Integer.parseInt(number.substring(0, 2));
176 code.append(convertInterleaved(digit));
177 pos += 2;
178 number = number.substring(2);
179 }
180 digit = Integer.parseInt(number);
181 code.append(convertInterleaved(digit));
182 code.append(')');
183 break;
184 default:
185 throw new com.lowagie.text.BadElementException("This type of barcode is not supported yet: " + type);
186 }
187 }
188 catch(NumberFormatException nfe) {
189 throw new com.lowagie.text.BadElementException("NumberFormatException at position " + pos + " in " + number + ": " + nfe.getMessage());
190 }
191 return code.toString();
192 }
193
194
197
198 private static char convertInterleaved(int digits) throws NumberFormatException {
199 int i;
200 if (digits < 50) {
201 i = 48;
202 }
203 else if (digits < 100) {
204 i = 142;
205 }
206 else {
207 throw new NumberFormatException(String.valueOf(digits));
208 }
209 return (char)(digits + i);
210 }
211
212
215
216 private static String addZero(String number, int length) {
217 StringBuffer buf = new StringBuffer();
218 int zeros = length - number.length();
219 for (int i = 0; i < zeros; i++) {
220 buf.append('0');
221 }
222 buf.append(number);
223 return buf.toString();
224 }
225 } |
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