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Posted to commits@polygene.apache.org by ni...@apache.org on 2015/04/17 18:05:22 UTC
[02/50] [abbrv] zest-qi4j git commit: QI-318 Moved org.json packages
from Core API to SPI
http://git-wip-us.apache.org/repos/asf/zest-qi4j/blob/13edb4e0/core/spi/src/main/java/org/json/JSONWriter.java
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diff --git a/core/spi/src/main/java/org/json/JSONWriter.java b/core/spi/src/main/java/org/json/JSONWriter.java
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+/*
+ * Copyright (c) 2009, Rickard Öberg. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package org.json;
+
+import java.io.IOException;
+import java.io.Writer;
+
+/*
+Copyright (c) 2006 JSON.org
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+The Software shall be used for Good, not Evil.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+/**
+ * JSONWriter provides a quick and convenient way of producing JSON text.
+ * The texts produced strictly conform to JSON syntax rules. No whitespace is
+ * added, so the results are ready for transmission or storage. Each instance of
+ * JSONWriter can produce one JSON text.
+ * <p/>
+ * A JSONWriter instance provides a <code>value</code> method for appending
+ * values to the
+ * text, and a <code>key</code>
+ * method for adding keys before values in objects. There are <code>array</code>
+ * and <code>endArray</code> methods that make and bound array values, and
+ * <code>object</code> and <code>endObject</code> methods which make and bound
+ * object values. All of these methods return the JSONWriter instance,
+ * permitting a cascade style. For example, <pre>
+ * new JSONWriter(myWriter)
+ * .object()
+ * .key("JSON")
+ * .value("Hello, World!")
+ * .endObject();</pre> which writes <pre>
+ * {"JSON":"Hello, World!"}</pre>
+ * <p/>
+ * The first method called must be <code>array</code> or <code>object</code>.
+ * There are no methods for adding commas or colons. JSONWriter adds them for
+ * you. Objects and arrays can be nested up to 20 levels deep.
+ * <p/>
+ * This can sometimes be easier than using a JSONObject to build a string.
+ */
+public class JSONWriter
+{
+ private static final int maxdepth = 20;
+
+ /**
+ * The comma flag determines if a comma should be output before the next
+ * value.
+ */
+ private boolean comma;
+
+ /**
+ * The current mode. Values:
+ * 'a' (array),
+ * 'd' (done),
+ * 'i' (initial),
+ * 'k' (key),
+ * 'o' (object).
+ */
+ protected char mode;
+
+ /**
+ * The object/array stack.
+ */
+ private JSONObject stack[];
+
+ /**
+ * The stack top index. A value of 0 indicates that the stack is empty.
+ */
+ private int top;
+
+ /**
+ * The writer that will receive the output.
+ */
+ protected Writer writer;
+
+ /**
+ * Make a fresh JSONWriter. It can be used to build one JSON text.
+ */
+ public JSONWriter( Writer w )
+ {
+ this.comma = false;
+ this.mode = 'i';
+ this.stack = new JSONObject[ maxdepth ];
+ this.top = 0;
+ this.writer = w;
+ }
+
+ /**
+ * Append a value.
+ *
+ * @param s A string value.
+ *
+ * @return this
+ *
+ * @throws JSONException If the value is out of sequence.
+ */
+ private JSONWriter append( String s )
+ throws JSONException
+ {
+ if( s == null )
+ {
+ throw new JSONException( "Null pointer" );
+ }
+ if( this.mode == 'o' || this.mode == 'a' )
+ {
+ try
+ {
+ if( this.comma && this.mode == 'a' )
+ {
+ this.writer.write( ',' );
+ }
+ this.writer.write( s );
+ }
+ catch( IOException e )
+ {
+ throw new JSONException( e );
+ }
+ if( this.mode == 'o' )
+ {
+ this.mode = 'k';
+ }
+ this.comma = true;
+ return this;
+ }
+ throw new JSONException( "Value out of sequence." );
+ }
+
+ /**
+ * Begin appending a new array. All values until the balancing
+ * <code>endArray</code> will be appended to this array. The
+ * <code>endArray</code> method must be called to mark the array's end.
+ *
+ * @return this
+ *
+ * @throws JSONException If the nesting is too deep, or if the object is
+ * started in the wrong place (for example as a key or after the end of the
+ * outermost array or object).
+ */
+ public JSONWriter array()
+ throws JSONException
+ {
+ if( this.mode == 'i' || this.mode == 'o' || this.mode == 'a' )
+ {
+ this.push( null );
+ this.append( "[" );
+ this.comma = false;
+ return this;
+ }
+ throw new JSONException( "Misplaced array." );
+ }
+
+ /**
+ * End something.
+ *
+ * @param m Mode
+ * @param c Closing character
+ *
+ * @return this
+ *
+ * @throws JSONException If unbalanced.
+ */
+ private JSONWriter end( char m, char c )
+ throws JSONException
+ {
+ if( this.mode != m )
+ {
+ throw new JSONException( m == 'o' ? "Misplaced endObject." :
+ "Misplaced endArray." );
+ }
+ this.pop( m );
+ try
+ {
+ this.writer.write( c );
+ }
+ catch( IOException e )
+ {
+ throw new JSONException( e );
+ }
+ this.comma = true;
+ return this;
+ }
+
+ /**
+ * End an array. This method most be called to balance calls to
+ * <code>array</code>.
+ *
+ * @return this
+ *
+ * @throws JSONException If incorrectly nested.
+ */
+ public JSONWriter endArray()
+ throws JSONException
+ {
+ return this.end( 'a', ']' );
+ }
+
+ /**
+ * End an object. This method most be called to balance calls to
+ * <code>object</code>.
+ *
+ * @return this
+ *
+ * @throws JSONException If incorrectly nested.
+ */
+ public JSONWriter endObject()
+ throws JSONException
+ {
+ return this.end( 'k', '}' );
+ }
+
+ /**
+ * Append a key. The key will be associated with the next value. In an
+ * object, every value must be preceded by a key.
+ *
+ * @param s A key string.
+ *
+ * @return this
+ *
+ * @throws JSONException If the key is out of place. For example, keys
+ * do not belong in arrays or if the key is null.
+ */
+ public JSONWriter key( String s )
+ throws JSONException
+ {
+ if( s == null )
+ {
+ throw new JSONException( "Null key." );
+ }
+ if( this.mode == 'k' )
+ {
+ try
+ {
+ stack[ top - 1 ].putOnce( s, Boolean.TRUE );
+ if( this.comma )
+ {
+ this.writer.write( ',' );
+ }
+ this.writer.write( JSONObject.quote( s ) );
+ this.writer.write( ':' );
+ this.comma = false;
+ this.mode = 'o';
+ return this;
+ }
+ catch( IOException e )
+ {
+ throw new JSONException( e );
+ }
+ }
+ throw new JSONException( "Misplaced key." );
+ }
+
+ /**
+ * Begin appending a new object. All keys and values until the balancing
+ * <code>endObject</code> will be appended to this object. The
+ * <code>endObject</code> method must be called to mark the object's end.
+ *
+ * @return this
+ *
+ * @throws JSONException If the nesting is too deep, or if the object is
+ * started in the wrong place (for example as a key or after the end of the
+ * outermost array or object).
+ */
+ public JSONWriter object()
+ throws JSONException
+ {
+ if( this.mode == 'i' )
+ {
+ this.mode = 'o';
+ }
+ if( this.mode == 'o' || this.mode == 'a' )
+ {
+ this.append( "{" );
+ this.push( new JSONObject() );
+ this.comma = false;
+ return this;
+ }
+ throw new JSONException( "Misplaced object." );
+ }
+
+ /**
+ * Pop an array or object scope.
+ *
+ * @param c The scope to close.
+ *
+ * @throws JSONException If nesting is wrong.
+ */
+ private void pop( char c )
+ throws JSONException
+ {
+ if( this.top <= 0 )
+ {
+ throw new JSONException( "Nesting error." );
+ }
+ char m = this.stack[ this.top - 1 ] == null ? 'a' : 'k';
+ if( m != c )
+ {
+ throw new JSONException( "Nesting error." );
+ }
+ this.top -= 1;
+ this.mode = this.top == 0 ? 'd' : this.stack[ this.top - 1 ] == null ? 'a' : 'k';
+ }
+
+ /**
+ * Push an array or object scope.
+ *
+ * @param jo The scope to open.
+ *
+ * @throws JSONException If nesting is too deep.
+ */
+ private void push( JSONObject jo )
+ throws JSONException
+ {
+ if( this.top >= maxdepth )
+ {
+ throw new JSONException( "Nesting too deep." );
+ }
+ this.stack[ this.top ] = jo;
+ this.mode = jo == null ? 'a' : 'k';
+ this.top += 1;
+ }
+
+ /**
+ * Append either the value <code>true</code> or the value
+ * <code>false</code>.
+ *
+ * @param b A boolean.
+ *
+ * @return this
+ *
+ * @throws JSONException
+ */
+ public JSONWriter value( boolean b )
+ throws JSONException
+ {
+ return this.append( b ? "true" : "false" );
+ }
+
+ /**
+ * Append a double value.
+ *
+ * @param d A double.
+ *
+ * @return this
+ *
+ * @throws JSONException If the number is not finite.
+ */
+ public JSONWriter value( double d )
+ throws JSONException
+ {
+ return this.value( new Double( d ) );
+ }
+
+ /**
+ * Append a long value.
+ *
+ * @param l A long.
+ *
+ * @return this
+ *
+ * @throws JSONException
+ */
+ public JSONWriter value( long l )
+ throws JSONException
+ {
+ return this.append( Long.toString( l ) );
+ }
+
+ /**
+ * Append an object value.
+ *
+ * @param o The object to append. It can be null, or a Boolean, Number,
+ * String, JSONObject, or JSONArray, or an object with a toJSONString()
+ * method.
+ *
+ * @return this
+ *
+ * @throws JSONException If the value is out of sequence.
+ */
+ public JSONWriter value( Object o )
+ throws JSONException
+ {
+ return this.append( JSONObject.valueToString( o ) );
+ }
+
+ /**
+ * Append JSON formatted string as-is
+ *
+ * @param json
+ *
+ * @return
+ *
+ * @throws JSONException
+ */
+ public JSONWriter json( String json )
+ throws JSONException
+ {
+ return this.append( json );
+ }
+}
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http://git-wip-us.apache.org/repos/asf/zest-qi4j/blob/13edb4e0/core/spi/src/main/java/org/json/package.html
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diff --git a/core/spi/src/main/java/org/json/package.html b/core/spi/src/main/java/org/json/package.html
new file mode 100644
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+<html>
+ <body>
+ <h2>JSON in Java.</h2>
+ <p>
+ See <a href="http://www.json.org/java/">json.org/java</a>.
+ </p>
+ </body>
+</html>
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