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hprose.io.unserialize.RawReader Maven / Gradle / Ivy
/**********************************************************\
| |
| hprose |
| |
| Official WebSite: http://www.hprose.com/ |
| http://www.hprose.org/ |
| |
\**********************************************************/
/**********************************************************\
* *
* RawReader.java *
* *
* hprose raw reader class for Java. *
* *
* LastModified: Aug 3, 2016 *
* Author: Ma Bingyao *
* *
\**********************************************************/
package hprose.io.unserialize;
import hprose.common.HproseException;
import static hprose.io.HproseTags.TagBytes;
import static hprose.io.HproseTags.TagClass;
import static hprose.io.HproseTags.TagClosebrace;
import static hprose.io.HproseTags.TagDate;
import static hprose.io.HproseTags.TagDouble;
import static hprose.io.HproseTags.TagEmpty;
import static hprose.io.HproseTags.TagError;
import static hprose.io.HproseTags.TagFalse;
import static hprose.io.HproseTags.TagGuid;
import static hprose.io.HproseTags.TagInfinity;
import static hprose.io.HproseTags.TagInteger;
import static hprose.io.HproseTags.TagList;
import static hprose.io.HproseTags.TagLong;
import static hprose.io.HproseTags.TagMap;
import static hprose.io.HproseTags.TagNaN;
import static hprose.io.HproseTags.TagNull;
import static hprose.io.HproseTags.TagObject;
import static hprose.io.HproseTags.TagOpenbrace;
import static hprose.io.HproseTags.TagQuote;
import static hprose.io.HproseTags.TagRef;
import static hprose.io.HproseTags.TagSemicolon;
import static hprose.io.HproseTags.TagString;
import static hprose.io.HproseTags.TagTime;
import static hprose.io.HproseTags.TagTrue;
import static hprose.io.HproseTags.TagUTC;
import static hprose.io.HproseTags.TagUTF8Char;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
public final class RawReader {
private static void readBytesRaw(InputStream stream, OutputStream ostream) throws IOException {
int len = 0;
int tag = '0';
do {
len = len * 10 + (tag - '0');
tag = stream.read();
ostream.write(tag);
} while (tag != TagQuote);
int off = 0;
byte[] b = new byte[len];
while (off < len) {
off += stream.read(b, off, len - off);
}
ostream.write(b);
ostream.write(stream.read());
}
private static void readGuidRaw(InputStream stream, OutputStream ostream) throws IOException {
int len = 38;
int off = 0;
byte[] b = new byte[len];
while (off < len) {
off += stream.read(b, off, len - off);
}
ostream.write(b);
}
private static void readUTF8CharRaw(InputStream stream, OutputStream ostream) throws IOException {
int tag = stream.read();
switch (tag >>> 4) {
case 0:
case 1:
case 2:
case 3:
case 4:
case 5:
case 6:
case 7:
ostream.write(tag);
break;
case 12:
case 13:
ostream.write(tag);
ostream.write(stream.read());
break;
case 14:
ostream.write(tag);
ostream.write(stream.read());
ostream.write(stream.read());
break;
default:
throw ValueReader.badEncoding(tag);
}
}
private static void readComplexRaw(InputStream stream, OutputStream ostream) throws IOException {
int tag;
do {
tag = stream.read();
ostream.write(tag);
} while (tag != TagOpenbrace);
while ((tag = stream.read()) != TagClosebrace) {
readRaw(stream, ostream, tag);
}
ostream.write(tag);
}
private static void readNumberRaw(InputStream stream, OutputStream ostream) throws IOException {
int tag;
do {
tag = stream.read();
ostream.write(tag);
} while (tag != TagSemicolon);
}
private static void readDateTimeRaw(InputStream stream, OutputStream ostream) throws IOException {
int tag;
do {
tag = stream.read();
ostream.write(tag);
} while (tag != TagSemicolon && tag != TagUTC);
}
private static void readStringRaw(InputStream stream, OutputStream ostream) throws IOException {
int count = 0;
int tag = '0';
do {
count = count * 10 + (tag - '0');
tag = stream.read();
ostream.write(tag);
} while (tag != TagQuote);
for (int i = 0; i < count; ++i) {
tag = stream.read();
switch (tag >>> 4) {
case 0:
case 1:
case 2:
case 3:
case 4:
case 5:
case 6:
case 7:
ostream.write(tag);
break;
case 12:
case 13:
ostream.write(tag);
ostream.write(stream.read());
break;
case 14:
ostream.write(tag);
ostream.write(stream.read());
ostream.write(stream.read());
break;
case 15:
if ((tag & 0x0f) <= 4) {
ostream.write(tag);
ostream.write(stream.read());
ostream.write(stream.read());
ostream.write(stream.read());
++i;
break;
}
default:
throw ValueReader.badEncoding(tag);
}
}
ostream.write(stream.read());
}
private static void readRaw(InputStream stream, OutputStream ostream) throws IOException {
readRaw(stream, ostream, stream.read());
}
final static void readRaw(InputStream stream, OutputStream ostream, int tag) throws IOException {
ostream.write(tag);
switch (tag) {
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
case TagNull:
case TagEmpty:
case TagTrue:
case TagFalse:
case TagNaN:
break;
case TagInfinity:
ostream.write(stream.read());
break;
case TagInteger:
case TagLong:
case TagDouble:
case TagRef:
readNumberRaw(stream, ostream);
break;
case TagDate:
case TagTime:
readDateTimeRaw(stream, ostream);
break;
case TagUTF8Char:
readUTF8CharRaw(stream, ostream);
break;
case TagBytes:
readBytesRaw(stream, ostream);
break;
case TagString:
readStringRaw(stream, ostream);
break;
case TagGuid:
readGuidRaw(stream, ostream);
break;
case TagList:
case TagMap:
case TagObject:
readComplexRaw(stream, ostream);
break;
case TagClass:
readComplexRaw(stream, ostream);
readRaw(stream, ostream);
break;
case TagError:
readRaw(stream, ostream);
break;
case -1:
throw new HproseException("No byte found in stream");
default:
throw new HproseException("Unexpected serialize tag '" + (char) tag + "' in stream");
}
}
}
