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closes #481, moved bytearraysearcher to library

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This commit is contained in:
jstaerk
2024-09-29 14:50:39 +02:00
parent be8c0be850
commit 721ea4b694
7 changed files with 104 additions and 67 deletions
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56
validator/src/main/java/org/mustangproject/validator/ByteArraySearcher.java
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@@ -1,56 +0,0 @@
package org.mustangproject.validator;
public final class ByteArraySearcher {
private ByteArraySearcher() {
}
public static int indexOf(byte[] haystack, byte[] needle) {
if (needle.length > haystack.length) {
return -1;
}
// Any needle to search?
if (needle.length == 0) {
return -1;
}
for (int i = 0; i <= haystack.length - needle.length; i++) {
boolean found = true;
for (int j = 0; j < needle.length; j++) {
if (haystack[i + j] != needle[j]) {
found = false;
break;
}
}
if (found) {
return i;
}
}
return -1;
}
public static boolean contains(byte[] haystack, byte[] needle) {
return indexOf (haystack, needle) >= 0;
}
public static boolean startsWith(byte[] haystack, byte[] needle) {
if (needle.length > haystack.length) {
return false;
}
// Any needle to search?
if (needle.length == 0) {
return false;
}
for (int j = 0; j < needle.length; j++) {
if (haystack[j] != needle[j]) {
return false;
}
}
return true;
}
}

1
validator/src/main/java/org/mustangproject/validator/PDFValidator.java
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@@ -21,6 +21,7 @@ import javax.xml.xpath.XPathExpression;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;
import org.mustangproject.util.ByteArraySearcher;
import org.mustangproject.ZUGFeRD.ZUGFeRDImporter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

1
validator/src/main/java/org/mustangproject/validator/ZUGFeRDValidator.java
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@@ -25,6 +25,7 @@ import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.XMLWriter;
import org.mustangproject.util.ByteArraySearcher;
import org.mustangproject.XMLTools;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

42
validator/src/test/java/org/mustangproject/validator/ByteArraySearcherTest.java
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@@ -1,42 +0,0 @@
package org.mustangproject.validator;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.junit.jupiter.api.Assertions.assertEquals;
import java.nio.charset.StandardCharsets;
import org.junit.Test;
public class ByteArraySearcherTest
{
@Test
public void testIndexOf () {
byte [] haystack = "Hello World".getBytes (StandardCharsets.ISO_8859_1);
assertEquals (0, ByteArraySearcher.indexOf (haystack, new byte [] { 'H' }));
assertEquals (1, ByteArraySearcher.indexOf (haystack, new byte [] { 'e' }));
assertEquals (0, ByteArraySearcher.indexOf (haystack, new byte [] { 'H', 'e' }));
assertEquals (0, ByteArraySearcher.indexOf (haystack, new byte [] { 'H', 'e' }));
assertEquals (0, ByteArraySearcher.indexOf (haystack, new byte [] { 'H', 'e', 'l', 'l' }));
assertEquals (0, ByteArraySearcher.indexOf (haystack, haystack));
assertEquals (-1, ByteArraySearcher.indexOf (haystack, new byte [0]));
assertEquals (-1, ByteArraySearcher.indexOf (haystack, new byte [] { 'a' }));
assertEquals (-1, ByteArraySearcher.indexOf (haystack, new byte [] { 'h' }));
assertEquals (-1, ByteArraySearcher.indexOf (haystack, new byte [] { 'r', 'o' }));
}
@Test
public void testStartsWith () {
byte [] haystack = "Hello World".getBytes (StandardCharsets.ISO_8859_1);
assertTrue (ByteArraySearcher.startsWith (haystack, new byte [] { 'H' }));
assertFalse (ByteArraySearcher.startsWith (haystack, new byte [] { 'e' }));
assertTrue (ByteArraySearcher.startsWith (haystack, new byte [] { 'H', 'e' }));
assertTrue (ByteArraySearcher.startsWith (haystack, new byte [] { 'H', 'e' }));
assertTrue (ByteArraySearcher.startsWith (haystack, new byte [] { 'H', 'e', 'l', 'l' }));
assertTrue (ByteArraySearcher.startsWith (haystack, haystack));
assertFalse (ByteArraySearcher.startsWith (haystack, new byte [0]));
assertFalse (ByteArraySearcher.startsWith (haystack, new byte [] { 'a' }));
assertFalse (ByteArraySearcher.startsWith (haystack, new byte [] { 'h' }));
assertFalse (ByteArraySearcher.startsWith (haystack, new byte [] { 'r', 'o' }));
}
}