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From nic...@apache.org
Subject [02/50] [abbrv] zest-qi4j git commit: QI-318 Moved org.json packages from Core API to SPI
Date Fri, 17 Apr 2015 16:05:22 GMT
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
new file mode 100644
index 0000000..c1328c0
--- /dev/null
+++ b/core/spi/src/main/java/org/json/JSONWriter.java
@@ -0,0 +1,429 @@
+/*
+ * 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 );
+    }
+}
\ No newline at end of file

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
index 0000000..6dc0ff7
--- /dev/null
+++ b/core/spi/src/main/java/org/json/package.html
@@ -0,0 +1,8 @@
+<html>
+    <body>
+        <h2>JSON in Java.</h2>
+        <p>
+            See <a href="http://www.json.org/java/">json.org/java</a>.
+        </p>
+    </body>
+</html>
\ No newline at end of file


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