2 * Copyright 2007 Google Inc.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 package com.google.zxing.client.result;
19 import java.util.Vector;
23 * <a href="http://www.nttdocomo.co.jp/english/service/imode/make/content/barcode/about/s2.html">
24 * DoCoMo's documentation</a> about the result types represented by subclasses of this class.
26 * @author srowen@google.com (Sean Owen)
28 abstract class AbstractDoCoMoResult extends ParsedReaderResult {
30 AbstractDoCoMoResult(ParsedReaderResultType type) {
34 // This could as well be implemented with java.util.regex. It was already implemented partially
35 // to run in a J2ME enviroment, where this unavailable.
37 static String[] matchPrefixedField(String prefix, String rawText) {
38 Vector matches = null;
40 int max = rawText.length();
42 i = rawText.indexOf(prefix, i);
46 i += prefix.length(); // Skip past this prefix we found to start
47 int start = i; // Found the start of a match here
50 i = rawText.indexOf((int) ';', i);
52 // No terminating semicolon? uh, done. Set i such that loop terminates and break
55 } else if (rawText.charAt(i - 1) == '\\') {
56 // semicolon was escaped so continue
60 if (matches == null) {
61 matches = new Vector(3); // lazy init
63 matches.addElement(unescape(rawText.substring(start, i)));
69 if (matches == null) {
72 int size = matches.size();
73 String[] result = new String[size];
74 for (int j = 0; j < size; j++) {
75 result[j] = (String) matches.elementAt(j);
80 static String matchSinglePrefixedField(String prefix, String rawText) {
81 String[] matches = matchPrefixedField(prefix, rawText);
82 return matches == null ? null : matches[0];
85 static String[] matchRequiredPrefixedField(String prefix, String rawText) {
86 String[] result = matchPrefixedField(prefix, rawText);
88 throw new IllegalArgumentException("Did not match prefix " + prefix);
93 private static String unescape(String escaped) {
94 if (escaped != null) {
95 int backslash = escaped.indexOf((int) '\\');
97 int max = escaped.length();
98 StringBuffer unescaped = new StringBuffer(max - 1);
99 unescaped.append(escaped.toCharArray(), 0, backslash);
100 boolean nextIsEscaped = false;
101 for (int i = backslash; i < max; i++) {
102 char c = escaped.charAt(i);
103 if (nextIsEscaped || c != '\\') {
105 nextIsEscaped = false;
107 nextIsEscaped = true;
110 return unescaped.toString();
116 static void maybeAppend(String value, StringBuffer result) {
119 result.append(value);