#undef ALIAS
#endif
-#ifdef UNKNOWN
-#pragma warn A sloppy coder has defined UNKNOWN as a macro!
-#undef UNKNOWN
+#ifdef UNSPECIFIED
+#pragma warn A sloppy coder has defined UNSPECIFIED as a macro!
+#undef UNSPECIFIED
#endif
#ifdef BOOL
\f
/**
- * A cooked value.
- *
- * This is the value that property-list clients see. It is a
- * persistent layer over the possibly-changing raw value; once a
- * client gets an SGValue from the property manager, the pointer
- * will be good for the life of the property manager itself, no
- * matter how often the pointer is tied or untied.
+ * A node in a property tree.
*/
-class SGValue
+class SGPropertyNode
{
+
public:
+
+
+ /**
+ * Property value types.
+ */
enum Type {
+ NONE,
+ ALIAS,
BOOL,
INT,
LONG,
FLOAT,
DOUBLE,
STRING,
- UNKNOWN
+ UNSPECIFIED
};
- SGValue ();
- SGValue (const SGValue &value);
- ~SGValue ();
-
- Type getType () const;
- SGValue * getAlias ();
- const SGValue * getAlias () const;
- bool alias (SGValue * alias);
- bool unalias ();
- bool isAlias () const { return _type == ALIAS; }
- bool getBoolValue () const;
- int getIntValue () const;
- long getLongValue () const;
- float getFloatValue () const;
- double getDoubleValue () const;
- string getStringValue () const;
+ /**
+ * Access mode attributes.
+ *
+ * <p>The ARCHIVE attribute is strictly advisory, and controls
+ * whether the property should normally be saved and restored.</p>
+ */
+ enum Attribute {
+ READ = 1,
+ WRITE = 2,
+ ARCHIVE = 4
+ };
- bool setBoolValue (bool value);
- bool setIntValue (int value);
- bool setLongValue (long value);
- bool setFloatValue (float value);
- bool setDoubleValue (double value);
- bool setStringValue (string value);
- bool setUnknownValue (string value);
- bool isTied () const { return _tied; }
+ /**
+ * Default constructor.
+ */
+ SGPropertyNode ();
- bool tie (const SGRawValue<bool> &rawValue, bool useDefault = true);
- bool tie (const SGRawValue<int> &rawValue, bool useDefault = true);
- bool tie (const SGRawValue<long> &rawValue, bool useDefault = true);
- bool tie (const SGRawValue<float> &rawValue, bool useDefault = true);
- bool tie (const SGRawValue<double> &rawValue, bool useDefault = true);
- bool tie (const SGRawValue<string> &rawValue, bool useDefault = true);
- bool untie ();
+ /**
+ * Copy constructor.
+ */
+ SGPropertyNode (const SGPropertyNode &node);
-private:
- enum {
- ALIAS = -1
- };
+ /**
+ * Destructor.
+ */
+ virtual ~SGPropertyNode ();
- void clear_value ();
- int _type;
- bool _tied;
- // The right kind of pointer...
- union {
- SGValue * alias;
- SGRawValue<bool> * bool_val;
- SGRawValue<int> * int_val;
- SGRawValue<long> * long_val;
- SGRawValue<float> * float_val;
- SGRawValue<double> * double_val;
- SGRawValue<string> * string_val;
- } _value;
+ //
+ // Basic properties.
+ //
-};
+ /**
+ * Test whether this node contains a primitive leaf value.
+ */
+ bool hasValue () const { return (_type != NONE); }
-\f
-/**
- * A node in a property tree.
- */
-class SGPropertyNode
-{
+ /**
+ * Get the node's simple (XML) name.
+ */
+ const string &getName () const { return _name; }
-public:
/**
- * Property value types.
- *
- * Right now, this duplicates SGValue::Type, but SGValue will be
- * disappearing soon.
+ * Get the node's integer index.
*/
- enum Type {
- BOOL,
- INT,
- LONG,
- FLOAT,
- DOUBLE,
- STRING,
- UNKNOWN
- };
+ const int getIndex () const { return _index; }
- SGPropertyNode ();
- virtual ~SGPropertyNode ();
- // Basic properties.
- bool hasValue () const { return (_value != 0); }
- SGValue * getValue () { return _value; }
- SGValue * getValue (bool create);
- const SGValue * getValue () const { return _value; }
- const string &getName () const { return _name; }
- const int getIndex () const { return _index; }
+ /**
+ * Get a non-const pointer to the node's parent.
+ */
SGPropertyNode * getParent () { return _parent; }
+
+
+ /**
+ * Get a const pointer to the node's parent.
+ */
const SGPropertyNode * getParent () const { return _parent; }
- // Alias support.
- bool alias (SGPropertyNode * target);
- bool alias (const string &path);
- bool unalias ();
- bool isAlias () const;
- SGPropertyNode * getAliasTarget ();
- const SGPropertyNode * getAliasTarget () const;
- // Children.
+ //
+ // Children.
+ //
+
+
+ /**
+ * Get the number of child nodes.
+ */
const int nChildren () const { return _children.size(); }
+
+
+ /**
+ * Get a child node by position (*NOT* index).
+ */
SGPropertyNode * getChild (int position);
+
+
+ /**
+ * Get a const child node by position (*NOT* index).
+ */
const SGPropertyNode * getChild (int position) const;
+
+
+ /**
+ * Get a child node by name and index.
+ */
SGPropertyNode * getChild (const string &name, int index = 0,
bool create = false);
+
+
+ /**
+ * Get a const child node by name and index.
+ */
const SGPropertyNode * getChild (const string &name, int index = 0) const;
+
+ /**
+ * Get a vector of all children with the specified name.
+ */
vector<SGPropertyNode *> getChildren (const string &name);
+
+
+ /**
+ * Get a vector all all children (const) with the specified name.
+ */
vector<const SGPropertyNode *> getChildren (const string &name) const;
- // Path information.
+
+ //
+ // Alias support.
+ //
+
+
+ /**
+ * Alias this node's leaf value to another's.
+ */
+ bool alias (SGPropertyNode * target);
+
+
+ /**
+ * Alias this node's leaf value to another's by relative path.
+ */
+ bool alias (const string &path);
+
+
+ /**
+ * Remove any alias for this node.
+ */
+ bool unalias ();
+
+
+ /**
+ * Test whether the node's leaf value is aliased to another's.
+ */
+ bool isAlias () const { return (_type == ALIAS); }
+
+
+ /**
+ * Get a non-const pointer to the current alias target, if any.
+ */
+ SGPropertyNode * getAliasTarget ();
+
+
+ /**
+ * Get a const pointer to the current alias target, if any.
+ */
+ const SGPropertyNode * getAliasTarget () const;
+
+
+ //
+ // Path information.
+ //
+
+
+ /**
+ * Get the path to this node from the root.
+ */
string getPath (bool simplify = false) const;
- // Relative or absolute paths.
+
+ /**
+ * Get a pointer to the root node.
+ */
SGPropertyNode * getRootNode ();
+
+
+ /**
+ * Get a const pointer to the root node.
+ */
const SGPropertyNode * getRootNode () const;
+
+
+ /**
+ * Get a pointer to another node by relative path.
+ */
SGPropertyNode * getNode (const string &relative_path, bool create = false);
+
+
+ /**
+ * Get a const pointer to another node by relative path.
+ */
const SGPropertyNode * getNode (const string &relative_path) const;
- // Value-related stuff.
- Type getType () const;
+
+ //
+ // Access Mode.
+ //
+
+ /**
+ * Check a single mode attribute for the property node.
+ */
+ bool getAttribute (Attribute attr) const { return (_attr & attr); }
+
+
+ /**
+ * Set a single mode attribute for the property node.
+ */
+ void setAttribute (Attribute attr, bool state) {
+ (state ? _attr |= attr : _attr &= ~attr);
+ }
+
+
+ /**
+ * Get all of the mode attributes for the property node.
+ */
+ int getAttributes () const { return _attr; }
+
+
+ /**
+ * Set all of the mode attributes for the property node.
+ */
+ void setAttributes (int attr) { _attr = attr; }
+
+ //
+ // Leaf Value (primitive).
+ //
+
+
+ /**
+ * Get the type of leaf value, if any, for this node.
+ */
+ Type getType () const;
+
+
+ /**
+ * Get a bool value for this node.
+ */
bool getBoolValue () const;
+
+
+ /**
+ * Get an int value for this node.
+ */
int getIntValue () const;
+
+
+ /**
+ * Get a long int value for this node.
+ */
long getLongValue () const;
+
+
+ /**
+ * Get a float value for this node.
+ */
float getFloatValue () const;
+
+
+ /**
+ * Get a double value for this node.
+ */
double getDoubleValue () const;
+
+
+ /**
+ * Get a string value for this node.
+ */
string getStringValue () const;
+
+
+ /**
+ * Set a bool value for this node.
+ */
bool setBoolValue (bool value);
+
+
+ /**
+ * Set an int value for this node.
+ */
bool setIntValue (int value);
+
+
+ /**
+ * Set a long int value for this node.
+ */
bool setLongValue (long value);
+
+
+ /**
+ * Set a float value for this node.
+ */
bool setFloatValue (float value);
+
+
+ /**
+ * Set a double value for this node.
+ */
bool setDoubleValue (double value);
+
+
+ /**
+ * Set a string value for this node.
+ */
bool setStringValue (string value);
- bool setUnknownValue (string value);
- bool isTied () const;
+ /**
+ * Set a value of unspecified type for this node.
+ */
+ bool setUnspecifiedValue (string value);
+
+
+ //
+ // Data binding.
+ //
+
+
+ /**
+ * Test whether this node is bound to an external data source.
+ */
+ bool isTied () const { return _tied; }
+
+
+ /**
+ * Bind this node to an external bool source.
+ */
bool tie (const SGRawValue<bool> &rawValue, bool useDefault = true);
+
+
+ /**
+ * Bind this node to an external int source.
+ */
bool tie (const SGRawValue<int> &rawValue, bool useDefault = true);
+
+
+ /**
+ * Bind this node to an external long int source.
+ */
bool tie (const SGRawValue<long> &rawValue, bool useDefault = true);
+
+
+ /**
+ * Bind this node to an external float source.
+ */
bool tie (const SGRawValue<float> &rawValue, bool useDefault = true);
+
+
+ /**
+ * Bind this node to an external double source.
+ */
bool tie (const SGRawValue<double> &rawValue, bool useDefault = true);
+
+
+ /**
+ * Bind this node to an external string source.
+ */
bool tie (const SGRawValue<string> &rawValue, bool useDefault = true);
+
+ /**
+ * Unbind this node from any external data source.
+ */
bool untie ();
- // Values from paths.
+
+ //
+ // Convenience methods using paths.
+ // TODO: add attribute methods
+ //
+
+
+ /**
+ * Get another node's type.
+ */
Type getType (const string &relative_path) const;
-
+
+
+ /**
+ * Test whether another node has a leaf value.
+ */
+ bool hasValue (const string &relative_path) const;
+
+
+ /**
+ * Get another node's value as a bool.
+ */
bool getBoolValue (const string &relative_path,
bool defaultValue = false) const;
+
+
+ /**
+ * Get another node's value as an int.
+ */
int getIntValue (const string &relative_path,
int defaultValue = 0) const;
+
+
+ /**
+ * Get another node's value as a long int.
+ */
long getLongValue (const string &relative_path,
long defaultValue = 0L) const;
+
+
+ /**
+ * Get another node's value as a float.
+ */
float getFloatValue (const string &relative_path,
float defaultValue = 0.0) const;
+
+
+ /**
+ * Get another node's value as a double.
+ */
double getDoubleValue (const string &relative_path,
double defaultValue = 0.0L) const;
+
+
+ /**
+ * Get another node's value as a string.
+ */
string getStringValue (const string &relative_path,
string defaultValue = "") const;
+
+ /**
+ * Set another node's value as a bool.
+ */
bool setBoolValue (const string &relative_path, bool value);
+
+
+ /**
+ * Set another node's value as an int.
+ */
bool setIntValue (const string &relative_path, int value);
+
+
+ /**
+ * Set another node's value as a long int.
+ */
bool setLongValue (const string &relative_path, long value);
+
+
+ /**
+ * Set another node's value as a float.
+ */
bool setFloatValue (const string &relative_path, float value);
+
+
+ /**
+ * Set another node's value as a double.
+ */
bool setDoubleValue (const string &relative_path, double value);
+
+
+ /**
+ * Set another node's value as a string.
+ */
bool setStringValue (const string &relative_path, string value);
- bool setUnknownValue (const string &relative_path, string value);
+
+ /**
+ * Set another node's value with no specified type.
+ */
+ bool setUnspecifiedValue (const string &relative_path, string value);
+
+
+ /**
+ * Test whether another node is bound to an external data source.
+ */
bool isTied (const string &relative_path) const;
+
+ /**
+ * Bind another node to an external bool source.
+ */
bool tie (const string &relative_path, const SGRawValue<bool> &rawValue,
bool useDefault = true);
+
+
+ /**
+ * Bind another node to an external int source.
+ */
bool tie (const string &relative_path, const SGRawValue<int> &rawValue,
bool useDefault = true);
+
+
+ /**
+ * Bind another node to an external long int source.
+ */
bool tie (const string &relative_path, const SGRawValue<long> &rawValue,
bool useDefault = true);
+
+
+ /**
+ * Bind another node to an external float source.
+ */
bool tie (const string &relative_path, const SGRawValue<float> &rawValue,
bool useDefault = true);
+
+
+ /**
+ * Bind another node to an external double source.
+ */
bool tie (const string &relative_path, const SGRawValue<double> &rawValue,
bool useDefault = true);
+
+
+ /**
+ * Bind another node to an external string source.
+ */
bool tie (const string &relative_path, const SGRawValue<string> &rawValue,
bool useDefault = true);
+
+ /**
+ * Unbind another node from any external data source.
+ */
bool untie (const string &relative_path);
+
protected:
+
+ /**
+ * Protected constructor for making new nodes on demand.
+ */
SGPropertyNode (const string &name, int index, SGPropertyNode * parent);
+
private:
- bool hasValue (const string &relative_path) const;
- SGValue * getValue (const string &relative_path, bool create = false);
- const SGValue * getValue (const string &relative_path) const;
- SGPropertyNode (const SGPropertyNode &node) {}
+ /**
+ * Clear any existing value and set the type to NONE.
+ */
+ void clear_value ();
- SGValue * _value;
string _name;
int _index;
SGPropertyNode * _parent;
vector<SGPropertyNode *> _children;
- mutable SGPropertyNode * _target;
+
+
+ Type _type;
+ bool _tied;
+ int _attr;
+
+ // The right kind of pointer...
+ union {
+ SGPropertyNode * alias;
+ SGRawValue<bool> * bool_val;
+ SGRawValue<int> * int_val;
+ SGRawValue<long> * long_val;
+ SGRawValue<float> * float_val;
+ SGRawValue<double> * double_val;
+ SGRawValue<string> * string_val;
+ } _value;
+
};
// I/O functions.
////////////////////////////////////////////////////////////////////////
+
+/**
+ * Read properties from an XML input stream.
+ */
bool readProperties (istream &input, SGPropertyNode * start_node,
const string &base = "");
+
+
+/**
+ * Read properties from an XML file.
+ */
bool readProperties (const string &file, SGPropertyNode * start_node);
+
+
+/**
+ * Write properties to an XML output stream.
+ */
bool writeProperties (ostream &output, const SGPropertyNode * start_node);
+
+
+/**
+ * Write properties to an XML file.
+ */
bool writeProperties (const string &file, const SGPropertyNode * start_node);
+
+
+/**
+ * Copy properties from one node to another.
+ */
bool copyProperties (const SGPropertyNode *in, SGPropertyNode *out);
projects / simgear.git / commitdiff