java/src/main/java/com/jsoniter/output/JsonStream.java at master · iCodeIN/java · GitHub

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package com.jsoniter.output;

import com.jsoniter.any.Any;

import com.jsoniter.spi.*;

import java.io.IOException;

import java.io.OutputStream;

import java.lang.reflect.Type;

public class JsonStream extends OutputStream {

public Config configCache;

int indention = 0;

private OutputStream out;

byte buf[];

int count;

public JsonStream(OutputStream out, int bufSize) {

if (bufSize < 32) {

throw new JsonException("buffer size must be larger than 32: " + bufSize);

}

this.out = out;

this.buf = new byte[bufSize];

}

public void reset(OutputStream out) {

this.out = out;

this.count = 0;

}

final void ensure(int minimal) throws IOException {

int available = buf.length - count;

if (available < minimal) {

if (count > 1024) {

flushBuffer();

}

growAtLeast(minimal);

}

private final void growAtLeast(int minimal) {

int toGrow = buf.length;

if (toGrow < minimal) {

toGrow = minimal;

}

byte[] newBuf = new byte[buf.length + toGrow];

System.arraycopy(buf, 0, newBuf, 0, buf.length);

buf = newBuf;

}

public final void write(int b) throws IOException {

ensure(1);

buf[count++] = (byte) b;

}

public final void write(byte b1, byte b2) throws IOException {

ensure(2);

buf[count++] = b1;

buf[count++] = b2;

}

public final void write(byte b1, byte b2, byte b3) throws IOException {

ensure(3);

buf[count++] = b1;

buf[count++] = b2;

buf[count++] = b3;

}

public final void write(byte b1, byte b2, byte b3, byte b4) throws IOException {

ensure(4);

buf[count++] = b1;

buf[count++] = b2;

buf[count++] = b3;

buf[count++] = b4;

}

public final void write(byte b1, byte b2, byte b3, byte b4, byte b5) throws IOException {

ensure(5);

buf[count++] = b1;

buf[count++] = b2;

buf[count++] = b3;

buf[count++] = b4;

buf[count++] = b5;

}

public final void write(byte b1, byte b2, byte b3, byte b4, byte b5, byte b6) throws IOException {

ensure(6);

buf[count++] = b1;

buf[count++] = b2;

buf[count++] = b3;

buf[count++] = b4;

buf[count++] = b5;

buf[count++] = b6;

}

public final void write(byte b[], int off, int len) throws IOException {

if (out == null) {

ensure(len);

} else {

if (len >= buf.length - count) {

if (len >= buf.length) {

/* If the request length exceeds the size of the output buffer,

flush the output buffer and then write the data directly.

In this way buffered streams will cascade harmlessly. */

flushBuffer();

out.write(b, off, len);

return;

}

flushBuffer();

}

System.arraycopy(b, off, buf, count, len);

count += len;

}

public void flush() throws IOException {

flushBuffer();

out.flush();

}

@Override

public void close() throws IOException {

if (out == null) {

return;

}

if (count > 0) {

flushBuffer();

}

out.close();

this.out = null;

count = 0;

}

final void flushBuffer() throws IOException {

if (out == null) {

return;

}

out.write(buf, 0, count);

count = 0;

}

public final void writeVal(String val) throws IOException {

if (val == null) {

writeNull();

} else {

StreamImplString.writeString(this, val);

}

public final void writeRaw(String val) throws IOException {

writeRaw(val, val.length());

}

public final void writeRaw(String val, int remaining) throws IOException {

if (out == null) {

ensure(remaining);

val.getBytes(0, remaining, buf, count);

count += remaining;

return;

}

int i = 0;

for (; ; ) {

int available = buf.length - count;

if (available < remaining) {

remaining -= available;

int j = i + available;

val.getBytes(i, j, buf, count);

count = buf.length;

flushBuffer();

i = j;

} else {

int j = i + remaining;

val.getBytes(i, j, buf, count);

count += remaining;

return;

}

public final void writeVal(Boolean val) throws IOException {

if (val == null) {

writeNull();

} else {

if (val) {

writeTrue();

} else {

writeFalse();

}

public final void writeVal(boolean val) throws IOException {

if (val) {

writeTrue();

} else {

writeFalse();

}

public final void writeTrue() throws IOException {

write((byte) 't', (byte) 'r', (byte) 'u', (byte) 'e');

}

public final void writeFalse() throws IOException {

write((byte) 'f', (byte) 'a', (byte) 'l', (byte) 's', (byte) 'e');

}

public final void writeVal(Short val) throws IOException {

if (val == null) {

writeNull();

} else {

writeVal(val.intValue());

}

public final void writeVal(short val) throws IOException {

writeVal((int) val);

}

public final void writeVal(Integer val) throws IOException {

if (val == null) {

writeNull();

} else {

writeVal(val.intValue());

}

public final void writeVal(int val) throws IOException {

StreamImplNumber.writeInt(this, val);

}

public final void writeVal(Long val) throws IOException {

if (val == null) {

writeNull();

} else {

writeVal(val.longValue());

}

public final void writeVal(long val) throws IOException {

StreamImplNumber.writeLong(this, val);

}

public final void writeVal(Float val) throws IOException {

if (val == null) {

writeNull();

} else {

writeVal(val.floatValue());

}

public final void writeVal(float val) throws IOException {

StreamImplNumber.writeFloat(this, val);

}

public final void writeVal(Double val) throws IOException {

if (val == null) {

writeNull();

} else {

writeVal(val.doubleValue());

}

public final void writeVal(double val) throws IOException {

StreamImplNumber.writeDouble(this, val);

}

public final void writeVal(Any val) throws IOException {

val.writeTo(this);

}

public final void writeNull() throws IOException {

write((byte) 'n', (byte) 'u', (byte) 'l', (byte) 'l');

}

public final void writeEmptyObject() throws IOException {

write((byte) '{', (byte) '}');

}

public final void writeEmptyArray() throws IOException {

write((byte) '[', (byte) ']');

}

public final void writeArrayStart() throws IOException {

indention += currentConfig().indentionStep();

write('[');

}

public final void writeMore() throws IOException {

write(',');

writeIndention();

}

public void writeIndention() throws IOException {

writeIndention(0);

}

private void writeIndention(int delta) throws IOException {

if (indention == 0) {

return;

}

write('\n');

int toWrite = indention - delta;

ensure(toWrite);

for (int i = 0; i < toWrite && count < buf.length; i++) {

buf[count++] = ' ';

}

public final void writeArrayEnd() throws IOException {

int indentionStep = currentConfig().indentionStep();

writeIndention(indentionStep);

indention -= indentionStep;

write(']');

}

public final void writeObjectStart() throws IOException {

int indentionStep = currentConfig().indentionStep();

indention += indentionStep;

write('{');

}

public final void writeObjectField(String field) throws IOException {

writeVal(field);

if (indention > 0) {

write((byte) ':', (byte) ' ');

} else {

write(':');

}

public final void writeObjectField(Object key) throws IOException {

Encoder encoder = MapKeyEncoders.registerOrGetExisting(key.getClass());

writeObjectField(key, encoder);

}

public final void writeObjectField(Object key, Encoder keyEncoder) throws IOException {

keyEncoder.encode(key, this);

if (indention > 0) {

write((byte) ':', (byte) ' ');

} else {

write(':');

}

public final void writeObjectEnd() throws IOException {

int indentionStep = currentConfig().indentionStep();

writeIndention(indentionStep);

indention -= indentionStep;

write('}');

}

public final void writeVal(Object obj) throws IOException {

if (obj == null) {

writeNull();

return;

}

Class<?> clazz = obj.getClass();

String cacheKey = currentConfig().getEncoderCacheKey(clazz);

Codegen.getEncoder(cacheKey, clazz).encode(obj, this);

}

public final <T> void writeVal(TypeLiteral<T> typeLiteral, T obj) throws IOException {

if (null == obj) {

writeNull();

} else {

Config config = currentConfig();

String cacheKey = config.getEncoderCacheKey(typeLiteral.getType());

Codegen.getEncoder(cacheKey, typeLiteral.getType()).encode(obj, this);

}

public final <T> void writeVal(Type type, T obj) throws IOException {

if (null == obj) {

writeNull();

} else {

Config config = currentConfig();

String cacheKey = config.getEncoderCacheKey(type);

Codegen.getEncoder(cacheKey, type).encode(obj, this);

}

public Config currentConfig() {

if (configCache != null) {

return configCache;

}

configCache = JsoniterSpi.getCurrentConfig();

return configCache;

}

public static void serialize(Config config, Object obj, OutputStream out) {

JsoniterSpi.setCurrentConfig(config);

try {

serialize(obj, out);

} finally {

JsoniterSpi.clearCurrentConfig();

}

public static void serialize(Object obj, OutputStream out) {

JsonStream stream = JsonStreamPool.borrowJsonStream();

try {

stream.reset(out);

stream.writeVal(obj);

} finally {

stream.close();

}

} catch (IOException e) {

throw new JsonException(e);

} finally {

JsonStreamPool.returnJsonStream(stream);

}

public static void serialize(Config config, TypeLiteral typeLiteral, Object obj, OutputStream out) {

JsoniterSpi.setCurrentConfig(config);

try {

serialize(typeLiteral, obj, out);

} finally {

JsoniterSpi.clearCurrentConfig();

}

public static void serialize(TypeLiteral typeLiteral, Object obj, OutputStream out) {

JsonStream stream = JsonStreamPool.borrowJsonStream();

try {

stream.reset(out);

stream.writeVal(typeLiteral, obj);

} finally {

stream.close();

}

} catch (IOException e) {

throw new JsonException(e);

} finally {

JsonStreamPool.returnJsonStream(stream);

}

public static void serialize(Type type, Object obj, OutputStream out) {

JsonStream stream = JsonStreamPool.borrowJsonStream();

try {

stream.reset(out);

stream.writeVal(type, obj);

} finally {

stream.close();

}

} catch (IOException e) {

throw new JsonException(e);

} finally {

JsonStreamPool.returnJsonStream(stream);

}

public static String serialize(Config config, Object obj) {

JsoniterSpi.setCurrentConfig(config);

try {

return serialize(config.escapeUnicode(), obj.getClass(), obj);

} finally {

JsoniterSpi.clearCurrentConfig();

}

public static String serialize(Object obj) {

return serialize(JsoniterSpi.getCurrentConfig().escapeUnicode(), obj.getClass(), obj);

}

public static String serialize(Config config, TypeLiteral typeLiteral, Object obj) {

JsoniterSpi.setCurrentConfig(config);

try {

return serialize(config.escapeUnicode(), typeLiteral.getType(), obj);

} finally {

JsoniterSpi.clearCurrentConfig();

}

public static String serialize(TypeLiteral typeLiteral, Object obj) {

return serialize(JsoniterSpi.getCurrentConfig().escapeUnicode(), typeLiteral.getType(), obj);

}

public static String serialize(boolean escapeUnicode, Type type, Object obj) {

JsonStream stream = JsonStreamPool.borrowJsonStream();

try {

stream.reset(null);

stream.writeVal(type, obj);

if (escapeUnicode) {

return new String(stream.buf, 0, stream.count);

} else {

return new String(stream.buf, 0, stream.count, "UTF8");

}

} catch (IOException e) {

throw new JsonException(e);

} finally {

JsonStreamPool.returnJsonStream(stream);

}

public static void setMode(EncodingMode mode) {

Config newConfig = JsoniterSpi.getDefaultConfig().copyBuilder().encodingMode(mode).build();

JsoniterSpi.setDefaultConfig(newConfig);

JsoniterSpi.setCurrentConfig(newConfig);

}

public static void setIndentionStep(int indentionStep) {

Config newConfig = JsoniterSpi.getDefaultConfig().copyBuilder().indentionStep(indentionStep).build();

JsoniterSpi.setDefaultConfig(newConfig);

JsoniterSpi.setCurrentConfig(newConfig);

}

public static void registerNativeEncoder(Class clazz, Encoder.ReflectionEncoder encoder) {

CodegenImplNative.NATIVE_ENCODERS.put(clazz, encoder);

}

public Slice buffer() {

return new Slice(buf, 0, count);

}

java/src/main/java/com/jsoniter/output/JsonStream.java at master · iCodeIN/java · GitHub

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