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@ -30,9 +30,8 @@ |
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package com.google.protobuf; |
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import java.io.IOException; |
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import java.io.UnsupportedEncodingException; |
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import java.nio.ByteBuffer; |
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import java.nio.charset.Charset; |
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import java.util.AbstractList; |
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import java.util.AbstractMap; |
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import java.util.AbstractSet; |
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@ -51,6 +50,10 @@ import java.util.Set; |
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* @author kenton@google.com (Kenton Varda) |
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*/ |
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public class Internal { |
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protected static final Charset UTF_8 = Charset.forName("UTF-8"); |
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protected static final Charset ISO_8859_1 = Charset.forName("ISO-8859-1"); |
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/** |
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* Helper called by generated code to construct default values for string |
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* fields. |
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@ -80,14 +83,7 @@ public class Internal { |
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* generated code calls this automatically. |
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*/ |
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public static String stringDefaultValue(String bytes) { |
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try { |
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return new String(bytes.getBytes("ISO-8859-1"), "UTF-8"); |
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} catch (UnsupportedEncodingException e) { |
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// This should never happen since all JVMs are required to implement
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// both of the above character sets.
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throw new IllegalStateException( |
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"Java VM does not support a standard character set.", e); |
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} |
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return new String(bytes.getBytes(ISO_8859_1), UTF_8); |
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} |
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/** |
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@ -99,37 +95,23 @@ public class Internal { |
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* embed raw bytes as a string literal with ISO-8859-1 encoding. |
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*/ |
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public static ByteString bytesDefaultValue(String bytes) { |
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try { |
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return ByteString.copyFrom(bytes.getBytes("ISO-8859-1")); |
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} catch (UnsupportedEncodingException e) { |
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// This should never happen since all JVMs are required to implement
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// ISO-8859-1.
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throw new IllegalStateException( |
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"Java VM does not support a standard character set.", e); |
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} |
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return ByteString.copyFrom(bytes.getBytes(ISO_8859_1)); |
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} |
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/** |
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* Helper called by generated code to construct default values for bytes |
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* fields. |
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* <p> |
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* This is like {@link #bytesDefaultValue}, but returns a byte array. |
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* This is like {@link #bytesDefaultValue}, but returns a byte array. |
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*/ |
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public static byte[] byteArrayDefaultValue(String bytes) { |
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try { |
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return bytes.getBytes("ISO-8859-1"); |
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} catch (UnsupportedEncodingException e) { |
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// This should never happen since all JVMs are required to implement
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// ISO-8859-1.
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throw new IllegalStateException( |
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"Java VM does not support a standard character set.", e); |
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} |
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return bytes.getBytes(ISO_8859_1); |
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} |
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/** |
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* Helper called by generated code to construct default values for bytes |
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* fields. |
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* <p> |
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* This is like {@link #bytesDefaultValue}, but returns a ByteBuffer. |
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* This is like {@link #bytesDefaultValue}, but returns a ByteBuffer. |
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*/ |
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public static ByteBuffer byteBufferDefaultValue(String bytes) { |
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return ByteBuffer.wrap(byteArrayDefaultValue(bytes)); |
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@ -185,7 +167,7 @@ public class Internal { |
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public static boolean isValidUtf8(ByteString byteString) { |
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return byteString.isValidUtf8(); |
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} |
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/** |
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* Like {@link #isValidUtf8(ByteString)} but for byte arrays. |
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*/ |
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@ -197,22 +179,14 @@ public class Internal { |
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* Helper method to get the UTF-8 bytes of a string. |
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*/ |
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public static byte[] toByteArray(String value) { |
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try { |
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return value.getBytes("UTF-8"); |
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} catch (UnsupportedEncodingException e) { |
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throw new RuntimeException("UTF-8 not supported?", e); |
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} |
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return value.getBytes(UTF_8); |
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} |
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/** |
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* Helper method to convert a byte array to a string using UTF-8 encoding. |
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*/ |
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public static String toStringUtf8(byte[] bytes) { |
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try { |
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return new String(bytes, "UTF-8"); |
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} catch (UnsupportedEncodingException e) { |
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throw new RuntimeException("UTF-8 not supported?", e); |
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} |
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return new String(bytes, UTF_8); |
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} |
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/** |
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@ -274,7 +248,7 @@ public class Internal { |
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} |
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return hash; |
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} |
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/** |
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* Helper method for implementing {@link Message#equals(Object)} for bytes field. |
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*/ |
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@ -298,7 +272,7 @@ public class Internal { |
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} |
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return hash; |
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} |
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/** |
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* Helper method for implementing {@link Message#hashCode()} for bytes field. |
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*/ |
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@ -309,7 +283,7 @@ public class Internal { |
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// based hashCode() method.
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return LiteralByteString.hashCode(bytes); |
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} |
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/** |
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* Helper method for implementing {@link Message#equals(Object)} for bytes |
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* field. |
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@ -322,7 +296,7 @@ public class Internal { |
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// compare all the content.
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return a.duplicate().clear().equals(b.duplicate().clear()); |
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} |
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/** |
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* Helper method for implementing {@link Message#equals(Object)} for bytes |
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* field. |
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@ -351,9 +325,9 @@ public class Internal { |
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} |
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return hash; |
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} |
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private static final int DEFAULT_BUFFER_SIZE = 4096; |
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/** |
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* Helper method for implementing {@link Message#hashCode()} for bytes |
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* field. |
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@ -382,18 +356,18 @@ public class Internal { |
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return h == 0 ? 1 : h; |
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} |
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} |
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/** |
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* An empty byte array constant used in generated code. |
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*/ |
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public static final byte[] EMPTY_BYTE_ARRAY = new byte[0]; |
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/** |
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* An empty byte array constant used in generated code. |
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*/ |
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public static final ByteBuffer EMPTY_BYTE_BUFFER = |
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ByteBuffer.wrap(EMPTY_BYTE_ARRAY); |
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/** An empty coded input stream constant used in generated code. */ |
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public static final CodedInputStream EMPTY_CODED_INPUT_STREAM = |
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CodedInputStream.newInstance(EMPTY_BYTE_ARRAY); |
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@ -458,13 +432,13 @@ public class Internal { |
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private final Map<K, RealValue> realMap; |
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private final Converter<RealValue, V> valueConverter; |
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public MapAdapter(Map<K, RealValue> realMap, |
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Converter<RealValue, V> valueConverter) { |
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this.realMap = realMap; |
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this.valueConverter = valueConverter; |
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} |
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@SuppressWarnings("unchecked") |
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@Override |
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public V get(Object key) { |
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@ -474,7 +448,7 @@ public class Internal { |
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} |
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return valueConverter.doForward(result); |
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} |
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@Override |
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public V put(K key, V value) { |
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RealValue oldValue = realMap.put(key, valueConverter.doBackward(value)); |
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@ -488,13 +462,13 @@ public class Internal { |
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public Set<java.util.Map.Entry<K, V>> entrySet() { |
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return new SetAdapter(realMap.entrySet()); |
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} |
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private class SetAdapter extends AbstractSet<Map.Entry<K, V>> { |
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private final Set<Map.Entry<K, RealValue>> realSet; |
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public SetAdapter(Set<Map.Entry<K, RealValue>> realSet) { |
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this.realSet = realSet; |
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} |
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@Override |
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public Iterator<java.util.Map.Entry<K, V>> iterator() { |
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return new IteratorAdapter(realSet.iterator()); |
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@ -503,17 +477,17 @@ public class Internal { |
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@Override |
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public int size() { |
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return realSet.size(); |
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} |
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} |
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} |
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private class IteratorAdapter implements Iterator<Map.Entry<K, V>> { |
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private final Iterator<Map.Entry<K, RealValue>> realIterator; |
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public IteratorAdapter( |
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Iterator<Map.Entry<K, RealValue>> realIterator) { |
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this.realIterator = realIterator; |
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} |
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@Override |
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public boolean hasNext() { |
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return realIterator.hasNext(); |
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@ -529,14 +503,14 @@ public class Internal { |
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realIterator.remove(); |
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} |
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} |
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private class EntryAdapter implements Map.Entry<K, V> { |
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private final Map.Entry<K, RealValue> realEntry; |
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public EntryAdapter(Map.Entry<K, RealValue> realEntry) { |
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this.realEntry = realEntry; |
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} |
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@Override |
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public K getKey() { |
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return realEntry.getKey(); |
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Feng Xiao
10 years ago