Reading, writing, and accessing loaded data all work.

2 files changed, 337 insertions, 57 deletions

diff --git a/src/unstable/json.cpp b/src/unstable/json.cpp
index c31c7f9..0b47da4 100644
--- a/src/unstable/json.cpp
+++ b/src/unstable/json.cpp
@@ -1,5 +1,8 @@
 #include "bu/json.h"
 #include "bu/staticmembuf.h"
+#include "bu/membuf.h"
+
+#include "bu/sio.h"
 
 #include <stdlib.h>
 
@@ -23,46 +26,146 @@ Bu::Json::Json( Bu::Stream &sInput ) :
     parse( sInput );
 }
 
+Bu::Json::Json( char &c, Bu::Stream &sInput ) :
+    eType( Invalid )
+{
+    parse( c, sInput );
+}
+
 Bu::Json::~Json()
 {
     reset();
 }
 
+Bu::Json::Type Bu::Json::getType() const
+{
+    return eType;
+}
+
+Bu::String Bu::Json::getString() const
+{
+    if( eType != String )
+        throw Bu::ExceptionBase(
+            "String requested from non-string json object."
+            );
+
+    return *uDat.pString;
+}
+
+double Bu::Json::getNumber() const
+{
+    if( eType != Number )
+        throw Bu::ExceptionBase(
+            "Number requested from non-number json object."
+            );
+
+    return uDat.dNumber;
+}
+
+bool Bu::Json::getBoolean() const
+{
+    if( eType != Boolean )
+        throw Bu::ExceptionBase(
+            "Boolean requested from non-boolean json object."
+            );
+
+    return uDat.bBoolean;
+}
+
+bool Bu::Json::isNull() const
+{
+    return eType == Null;
+}
+
+Bu::Json *Bu::Json::operator[]( const Bu::String &sKey ) const
+{
+    if( eType != Boolean )
+        throw Bu::ExceptionBase(
+            "Object entry requested from non-object json object."
+            );
+
+    return uDat.pObject->get( sKey );
+
+}
+
+int Bu::Json::getSize() const
+{
+    if( eType == Object )
+        return uDat.pObject->getSize();
+    else if( eType == Array )
+        return uDat.pArray->getSize();
+    else if( eType == String )
+        return uDat.pString->getSize();
+    else
+        throw Bu::ExceptionBase(
+            "Size requseted from json type that doesn't support it."
+            );
+}
+
+Bu::Json::iterator Bu::Json::begin()
+{
+    return uDat.pArray->begin();
+}
+
+Bu::Json::const_iterator Bu::Json::begin() const
+{
+    return uDat.pArray->begin();
+}
+
+Bu::Json::iterator Bu::Json::end()
+{
+    return uDat.pArray->end();
+}
+
+Bu::Json::const_iterator Bu::Json::end() const
+{
+    return uDat.pArray->end();
+}
+
 void Bu::Json::parse( Bu::Stream &sInput )
 {
     reset();
 
     char c;
-    for(;;)
+    next("json");
+
+    parse( c, sInput );
+}
+
+void Bu::Json::parse( char &c, Bu::Stream &sInput )
+{
+    while( c == ' ' || c == '\t' || c == '\r' || c == '\n' )
     {
         next( "json" );
-        if( c == ' ' || c == '\t' || c == '\r' || c == '\n' )
-            continue;
-        if( c == '"' )
-        {
-            // String
-            parseString( c, sInput );
-        }
-        else if( c == '{' )
-        {
-            // Object
-            parseObject( c, sInput );
-        }
-        else if( c == '[' )
-        {
-            // Array
-            parseArray( c, sInput );
-        }
-        else if( c == '-' || (c >= '0' && c <= '9') )
-        {
-            // Number -- apparently they can't start with a period
-            parseNumber( c, sInput );
-        }
-        else if( c == 't' || c == 'f' || c == 'n' )
-        {
-            // True / false / null
-            parseLiteral( c, sInput );
-        }
+    }
+    if( c == '"' )
+    {
+        // String
+        parseString( c, sInput );
+    }
+    else if( c == '{' )
+    {
+        // Object
+        parseObject( c, sInput );
+    }
+    else if( c == '[' )
+    {
+        // Array
+        parseArray( c, sInput );
+    }
+    else if( c == '-' || (c >= '0' && c <= '9') )
+    {
+        // Number -- apparently they can't start with a period
+        parseNumber( c, sInput );
+    }
+    else if( c == 't' || c == 'f' || c == 'n' )
+    {
+        // True / false / null
+        parseLiteral( c, sInput );
+    }
+    else
+    {
+        throw Bu::ExceptionBase("Invalid characters in json stream.");
     }
 }
 
@@ -99,12 +202,112 @@ void Bu::Json::reset()
     uDat.pObject = NULL;
 }
 
-void Bu::Json::parseString( char &c, Bu::Stream &sInput, Bu::String &sOut )
+void Bu::Json::write( Bu::Stream &sOutput ) const
 {
-    while( c != '"' )
+    switch( eType )
     {
-        next( "string" );
+        case Invalid:
+            throw Bu::ExceptionBase("Invalid type in json");
+            break;
+
+        case Object:
+            {
+                sOutput.write("{", 1 );
+                bool bFirst = true;
+                for( JsonHash::iterator i = uDat.pObject->begin(); i; i++ )
+                {
+                    if( bFirst == true )
+                        bFirst = false;
+                    else
+                        sOutput.write(",");
+                    writeStr( i.getKey(), sOutput );
+                    sOutput.write(":", 1 );
+                    (*i)->write( sOutput );
+                }
+                sOutput.write("}", 1 );
+            }
+            break;
+
+        case Array:
+            {
+                sOutput.write("[", 1);
+                bool bFirst = true;
+                for( JsonList::iterator i = uDat.pArray->begin(); i; i++ )
+                {
+                    if( bFirst == true )
+                        bFirst = false;
+                    else
+                        sOutput.write(",", 1 );
+                    (*i)->write( sOutput );
+                }
+                sOutput.write("]", 1);
+            }
+            break;
+
+        case String:
+            writeStr( *uDat.pString, sOutput );
+            break;
+
+        case Number:
+            sOutput.write(Bu::String("%1").arg( uDat.dNumber ));
+            break;
+
+        case Boolean:
+            if( uDat.bBoolean )
+                sOutput.write("true", 4 );
+            else
+                sOutput.write("false", 5 );
+            break;
+
+        case Null:
+            sOutput.write("null", 4 );
+            break;
     }
+}
+
+void Bu::Json::writeStable( Bu::Stream &sOutput ) const
+{
+    if( eType == Object )
+    {
+        sOutput.write("{", 1 );
+        bool bFirst = true;
+        Bu::List<Bu::String> lKey = uDat.pObject->getKeys();
+        lKey.sort();
+        for( Bu::List<Bu::String>::iterator i = lKey.begin(); i; i++ )
+        {
+            if( bFirst == true )
+                bFirst = false;
+            else
+                sOutput.write(",");
+            writeStr( *i, sOutput );
+            sOutput.write(":", 1 );
+            uDat.pObject->get( *i )->write( sOutput );
+        }
+        sOutput.write("}", 1 );
+    }
+    else
+    {
+        write( sOutput );
+    }
+}
+
+Bu::String Bu::Json::toString() const
+{
+    Bu::MemBuf mb;
+    write( mb );
+    return mb.getString();
+}
+
+Bu::String Bu::Json::toStringStable() const
+{
+    Bu::MemBuf mb;
+    writeStable( mb );
+    return mb.getString();
+}
+
+void Bu::Json::parseString( char &c, Bu::Stream &sInput, Bu::String &sOut )
+{
+    skipWs( c, sInput );
     bool bEscape = false;
     for(;;)
     {
@@ -157,6 +360,7 @@ void Bu::Json::parseString( char &c, Bu::Stream &sInput, Bu::String &sOut )
                 bEscape = true;
             if( c == '"' )
             {
+                readChar( c, sInput );
                 break;
             }
             sOut += c;
@@ -173,11 +377,7 @@ void Bu::Json::parseString( char &c, Bu::Stream &sInput )
 
 void Bu::Json::parseObject( char &c, Bu::Stream &sInput )
 {
-    while( c != '{' )
-    {
-        next( "object" );
-    }
-
+    skipWs( c, sInput );
     eType = Object;
     uDat.pObject = new JsonHash();
 
@@ -186,17 +386,21 @@ void Bu::Json::parseObject( char &c, Bu::Stream &sInput )
     {
         Bu::String sKey;
         parseString( c, sInput, sKey );
-        next( "object" );
+        skipWs( c, sInput );
         if( c != ':' )
         {
             throw Bu::ExceptionBase(
                 "Invalid json, expected colon after key in object."
                 );
         }
-        uDat.pObject->insert( sKey, new Json( sInput ) );
-        next( "object" );
+        next("object");
+        uDat.pObject->insert( sKey, new Json( c, sInput ) );
+        skipWs( c, sInput );
         if( c == '}' )
+        {
+            readChar( c, sInput );
             break;
+        }
         else if( c == ',' )
             next( "object" );
         else
@@ -208,23 +412,27 @@ void Bu::Json::parseObject( char &c, Bu::Stream &sInput )
 
 void Bu::Json::parseArray( char &c, Bu::Stream &sInput )
 {
-    while( c != '[' )
-    {
-        next( "array" );
-    }
+    skipWs( c, sInput );
 
     eType = Array;
     uDat.pArray = new JsonList();
 
-    next( "array" );
+    next("array");
+
     for(;;)
     {
-        uDat.pArray->append( new Json( sInput ) );
-        next( "array" );
+        uDat.pArray->append( new Json( c, sInput ) );
+        skipWs( c, sInput );
         if( c == ']' )
+        {
+            readChar( c, sInput );
             break;
+        }
         else if( c == ',' )
+        {
+            next("array");
             continue;
+        }
         else
         {
             throw Bu::ExceptionBase(
@@ -236,10 +444,7 @@ void Bu::Json::parseArray( char &c, Bu::Stream &sInput )
 
 void Bu::Json::parseNumber( char &c, Bu::Stream &sInput )
 {
-    while( c != '-' && c < '0' && c > '9' )
-    {
-        next( "number" );
-    }
+    skipWs( c, sInput );
 
     Bu::String sBuf;
     if( c == '-' )
@@ -274,10 +479,7 @@ void Bu::Json::parseNumber( char &c, Bu::Stream &sInput )
 
 void Bu::Json::parseLiteral( char &c, Bu::Stream &sInput )
 {
-    while( c != 'f' && c != 't' && c != 'n' )
-    {
-        next( "literal" );
-    }
+    skipWs( c, sInput );
 
     Bu::String s;
     do
@@ -329,3 +531,57 @@ bool Bu::Json::isWs( char c )
     return c == ' ' || c == '\t' || c == '\r' || c == '\n';
 }
 
+void Bu::Json::skipWs( char &c, Bu::Stream &sInput )
+{
+    while( isWs( c ) )
+    {
+        next("whitespace");
+    }
+}
+
+void Bu::Json::writeStr( const Bu::String &sStr, Bu::Stream &sOutput ) const
+{
+    sOutput.write("\"", 1 );
+    for( Bu::String::const_iterator i = sStr.begin(); i; i++ )
+    {
+        switch( *i )
+        {
+            case '"':
+                sOutput.write("\\\"", 2 );
+                break;
+
+            case '\\':
+                sOutput.write("\\\\", 2 );
+                break;
+
+            case '/':
+                sOutput.write("\\/", 2 );
+                break;
+
+            case '\b':
+                sOutput.write("\\b", 2 );
+                break;
+
+            case '\f':
+                sOutput.write("\\f", 2 );
+                break;
+
+            case '\n':
+                sOutput.write("\\n", 2 );
+                break;
+
+            case '\r':
+                sOutput.write("\\r", 2 );
+                break;
+
+            case '\t':
+                sOutput.write("\\t", 2 );
+                break;
+
+            default:
+                sOutput.write( &(*i), 1 );
+        }
+    }
+    sOutput.write("\"", 1 );
+}
+
diff --git a/src/unstable/json.h b/src/unstable/json.h
index 47009cb..2d1770d 100644
--- a/src/unstable/json.h
+++ b/src/unstable/json.h
@@ -11,7 +11,14 @@ namespace Bu
 
     class Json
     {
+    private:
+        Json( char &c, Bu::Stream &sInput );
+        typedef Bu::Hash<Bu::String, Json *> JsonHash;
+        typedef Bu::List<Json *> JsonList;
+
     public:
+        typedef JsonList::iterator iterator;
+        typedef JsonList::const_iterator const_iterator;
         enum Type
         {
             Invalid,
@@ -29,10 +36,28 @@ namespace Bu
         Json( Bu::Stream &sInput );
         virtual ~Json();
 
+        Type getType() const;
+        Bu::String getString() const;
+        double getNumber() const;
+        bool getBoolean() const;
+        bool isNull() const;
+        Json *operator[]( const Bu::String &sKey ) const;
+        int getSize() const;
+        iterator begin();
+        const_iterator begin() const;
+        iterator end();
+        const_iterator end() const;
+
         void parse( Bu::Stream &sInput );
         void reset();
 
+        void write( Bu::Stream &sOutput ) const;
+        void writeStable( Bu::Stream &sOutput ) const;
+        Bu::String toString() const;
+        Bu::String toStringStable() const;
+
     private:
+        void parse( char &c, Bu::Stream &sInput );
         void parseString( char &c, Bu::Stream &sInput, Bu::String &sOut );
         void parseString( char &c, Bu::Stream &sInput );
         void parseObject( char &c, Bu::Stream &sInput );
@@ -42,11 +67,10 @@ namespace Bu
         bool readChar( char &c, Bu::Stream &sInput );
         void readChar( char &c, Bu::Stream &sInput, const char *sSection );
         bool isWs( char c );
+        void skipWs( char &c, Bu::Stream &sInput );
+        void writeStr( const Bu::String &sStr, Bu::Stream &sOutput ) const;
 
     private:
-        typedef Bu::Hash<Bu::String, Json *> JsonHash;
-        typedef Bu::List<Json *> JsonList;
-
         Type eType;
         union DatUnion
         {