| 1 | /** | |
| 2 | * SpamSchutz - simple way to protect your mail addresses from naïve spammers | |
| 3 | * Copyright (C) 2011, Aiki IT | |
| 4 | * <p/> | |
| 5 | * This program is free software: you can redistribute it and/or modify | |
| 6 | * it under the terms of the GNU General Public License as published by | |
| 7 | * the Free Software Foundation, either version 3 of the License, or | |
| 8 | * (at your option) any later version. | |
| 9 | * <p/> | |
| 10 | * This program is distributed in the hope that it will be useful, | |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 | * GNU General Public License for more details. | |
| 14 | * <p/> | |
| 15 | * You should have received a copy of the GNU General Public License | |
| 16 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 17 | */ | |
| 18 | package de.aikiit.spamprotector.converter; | |
| 19 | ||
| 20 | import com.google.common.base.Strings; | |
| 21 | import com.google.common.collect.Maps; | |
| 22 | import lombok.AccessLevel; | |
| 23 | import lombok.NoArgsConstructor; | |
| 24 | ||
| 25 | import java.util.Map; | |
| 26 | ||
| 27 | /** | |
| 28 | * Class encapsulates the actual character conversion logics. | |
| 29 | */ | |
| 30 | @NoArgsConstructor(access = AccessLevel.PRIVATE) | |
| 31 | public final class SpamProtector { | |
| 32 | ||
| 33 | private static final Map<String, CharacterConverter> ENCODED = Maps.newHashMap(); | |
| 34 | private static final Map<Character, CharacterConverter> PLAIN = Maps.newHashMap(); | |
| 35 | ||
| 36 | static { | |
| 37 | // split up characters | |
| 38 | for (CharacterConverter character : CharacterConverter.values()) { | |
| 39 | ENCODED.put(character.getReplacement().toLowerCase(), character); | |
| 40 | PLAIN.put(character.getPlain().charAt(0), character); | |
| 41 | } | |
| 42 | } | |
| 43 | ||
| 44 | /** | |
| 45 | * Converts an encoded value into a plain one. | |
| 46 | * | |
| 47 | * @param input encoded value as set in an enumeration instance of this class. | |
| 48 | * @return encoded value or input if no mapping is found. | |
| 49 | */ | |
| 50 | public static String toPlain(String input) { | |
| 51 |
1
1. toPlain : negated conditional → KILLED |
if (!Strings.isNullOrEmpty(input)) { |
| 52 | String toTransform = input; | |
| 53 | StringBuilder result = new StringBuilder(); | |
| 54 | ||
| 55 |
1
1. toPlain : negated conditional → KILLED |
while (!Strings.isNullOrEmpty(toTransform)) { |
| 56 | int lengthBeforeConversion = toTransform.length(); | |
| 57 | ||
| 58 | for(Map.Entry<String, CharacterConverter> entry : ENCODED.entrySet()) { | |
| 59 | // cut out any found items | |
| 60 | String prefix = entry.getKey(); | |
| 61 |
1
1. toPlain : negated conditional → KILLED |
if (toTransform.startsWith(prefix)) { |
| 62 | result.append(entry.getValue().getPlain()); | |
| 63 | toTransform = toTransform.substring(prefix.length(), toTransform.length()); | |
| 64 | } | |
| 65 | } | |
| 66 | ||
| 67 | // in case we did not replace any character trim one and restart | |
| 68 |
1
1. toPlain : negated conditional → TIMED_OUT |
if (toTransform.length() == lengthBeforeConversion) { |
| 69 | result.append(toTransform.charAt(0)); | |
| 70 | toTransform = toTransform.substring(1); | |
| 71 | } | |
| 72 | } | |
| 73 | ||
| 74 |
1
1. toPlain : replaced return value with "" for de/aikiit/spamprotector/converter/SpamProtector::toPlain → KILLED |
return result.toString(); |
| 75 | ||
| 76 | } | |
| 77 |
1
1. toPlain : replaced return value with "" for de/aikiit/spamprotector/converter/SpamProtector::toPlain → KILLED |
return input; |
| 78 | } | |
| 79 | ||
| 80 | /** | |
| 81 | * Converts a plain value into an encoded one. | |
| 82 | * | |
| 83 | * @param input plain value that is transformed by an enumeration instance of this class. | |
| 84 | * @return encoded value or input if no mapping is found. | |
| 85 | */ | |
| 86 | public static String toEncoded(String input) { | |
| 87 |
1
1. toEncoded : negated conditional → KILLED |
if (!Strings.isNullOrEmpty(input)) { |
| 88 | StringBuilder result = new StringBuilder(); | |
| 89 | ||
| 90 | for (Character character : input.toCharArray()) { | |
| 91 |
1
1. toEncoded : negated conditional → KILLED |
result.append(PLAIN.containsKey(character) ? PLAIN.get(character).getReplacement() : character); |
| 92 | } | |
| 93 | ||
| 94 |
1
1. toEncoded : replaced return value with "" for de/aikiit/spamprotector/converter/SpamProtector::toEncoded → KILLED |
return result.toString(); |
| 95 | } | |
| 96 |
1
1. toEncoded : replaced return value with "" for de/aikiit/spamprotector/converter/SpamProtector::toEncoded → KILLED |
return input; |
| 97 | } | |
| 98 | } | |
Mutations | ||
| 51 |
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| 55 |
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| 61 |
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| 68 |
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| 74 |
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| 77 |
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| 87 |
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| 91 |
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| 94 |
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| 96 |
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