-// props.hxx - interface definition for a property list.
+// props.cxx - implementation of a property list.
// Started Fall 2000 by David Megginson, david@megginson.com
// This code is released into the Public Domain.
//
//
// $Id$
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <simgear/compiler.h>
+
#include <stdio.h>
#include <stdlib.h>
-#include <iostream>
+#include STL_IOSTREAM
#include <algorithm>
#include "props.hxx"
-using std::cerr;
-using std::endl;
-using std::sort;
+FG_USING_STD(sort);
+
+
+\f
+////////////////////////////////////////////////////////////////////////
+// Local classes.
+////////////////////////////////////////////////////////////////////////
+
+/**
+ * Comparator class for sorting by index.
+ */
+class CompareIndices
+{
+public:
+ int operator() (const SGPropertyNode * n1, const SGPropertyNode *n2) const {
+ return (n1->getIndex() < n2->getIndex());
+ }
+};
\f
#define GET_BOOL (_value.bool_val->getValue())
#define GET_INT (_value.int_val->getValue())
+#define GET_LONG (_value.long_val->getValue())
#define GET_FLOAT (_value.float_val->getValue())
#define GET_DOUBLE (_value.double_val->getValue())
#define GET_STRING (_value.string_val->getValue())
#define SET_BOOL(val) (_value.bool_val->setValue(val))
#define SET_INT(val) (_value.int_val->setValue(val))
+#define SET_LONG(val) (_value.long_val->setValue(val))
#define SET_FLOAT(val) (_value.float_val->setValue(val))
#define SET_DOUBLE(val) (_value.double_val->setValue(val))
#define SET_STRING(val) (_value.string_val->setValue(val))
const bool SGRawValue<bool>::DefaultValue = false;
const int SGRawValue<int>::DefaultValue = 0;
+const long SGRawValue<long>::DefaultValue = 0L;
const float SGRawValue<float>::DefaultValue = 0.0;
const double SGRawValue<double>::DefaultValue = 0.0L;
const string SGRawValue<string>::DefaultValue = "";
int position,
bool create)
{
+ // Run off the end of the list
if (current == 0) {
return 0;
}
- else if (position >= components.size()) {
+ // Success! This is the one we want.
+ else if (position >= (int)components.size()) {
return current;
}
+ // Empty component means root.
else if (components[position].name == "") {
return find_node(current->getRootNode(), components, position + 1, create);
}
+ // . means current directory
else if (components[position].name == ".") {
return find_node(current, components, position + 1, create);
}
+ // .. means parent directory
else if (components[position].name == "..") {
SGPropertyNode * parent = current->getParent();
if (parent == 0)
return find_node(parent, components, position + 1, create);
}
+ // Otherwise, a child name
else {
SGPropertyNode * child =
current->getChild(components[position].name,
_type = source._type;
_tied = source._tied;
switch (source._type) {
+ case ALIAS:
+ // FIXME!!!
+ _value.alias = (SGValue *)(source.getAlias());
+ break;
case BOOL:
_value.bool_val = source._value.bool_val->clone();
break;
case INT:
_value.int_val = source._value.int_val->clone();
break;
+ case LONG:
+ _value.long_val = source._value.long_val->clone();
+ break;
case FLOAT:
_value.float_val = source._value.float_val->clone();
break;
*/
SGValue::~SGValue ()
{
- clear_value();
+ if (_type != ALIAS)
+ clear_value();
}
SGValue::clear_value ()
{
switch (_type) {
+ case ALIAS:
+ _value.alias->clear_value();
case BOOL:
delete _value.bool_val;
_value.bool_val = 0;
delete _value.int_val;
_value.int_val = 0;
break;
+ case LONG:
+ delete _value.long_val;
+ _value.long_val = 0L;
+ break;
case FLOAT:
delete _value.float_val;
_value.float_val = 0;
}
+/**
+ * Get the current type.
+ *
+ * Does not return a type of ALIAS.
+ */
+SGValue::Type
+SGValue::getType () const
+{
+ if (_type == ALIAS)
+ return _value.alias->getType();
+ else
+ return (Type)_type;
+}
+
+
+/**
+ * Get the current aliased value.
+ */
+SGValue *
+SGValue::getAlias ()
+{
+ return (_type == ALIAS ? _value.alias : 0);
+}
+
+
+/**
+ * Get the current aliased value.
+ */
+const SGValue *
+SGValue::getAlias () const
+{
+ return (_type == ALIAS ? _value.alias : 0);
+}
+
+
+/**
+ * Alias to another value.
+ */
+bool
+SGValue::alias (SGValue * alias)
+{
+ if (alias == 0 || _type == ALIAS || _tied)
+ return false;
+ clear_value();
+ _value.alias = alias;
+ _type = ALIAS;
+ return true;
+}
+
+
+/**
+ * Unalias from another value.
+ */
+bool
+SGValue::unalias ()
+{
+ // FIXME: keep copy of previous value,
+ // as with untie()
+ if (_type != ALIAS)
+ return false;
+ _value.string_val = new SGRawValueInternal<string>;
+ _type = UNKNOWN;
+ return true;
+}
+
+
/**
* Get a boolean value.
*/
SGValue::getBoolValue () const
{
switch (_type) {
+ case ALIAS:
+ return _value.alias->getBoolValue();
case BOOL:
return GET_BOOL;
case INT:
return GET_INT == 0 ? false : true;
+ case LONG:
+ return GET_LONG == 0L ? false : true;
case FLOAT:
return GET_FLOAT == 0.0 ? false : true;
case DOUBLE:
case UNKNOWN:
return (GET_STRING == "true" || getDoubleValue() != 0.0L);
}
+
+ return false;
}
SGValue::getIntValue () const
{
switch (_type) {
+ case ALIAS:
+ return _value.alias->getIntValue();
case BOOL:
- return (int)GET_BOOL;
+ return int(GET_BOOL);
case INT:
return GET_INT;
+ case LONG:
+ return int(GET_LONG);
case FLOAT:
- return (int)GET_FLOAT;
+ return int(GET_FLOAT);
case DOUBLE:
- return (int)GET_DOUBLE;
+ return int(GET_DOUBLE);
case STRING:
case UNKNOWN:
return atoi(GET_STRING.c_str());
}
+
+ return 0;
+}
+
+
+/**
+ * Get a long integer value.
+ */
+long
+SGValue::getLongValue () const
+{
+ switch (_type) {
+ case ALIAS:
+ return _value.alias->getLongValue();
+ case BOOL:
+ return long(GET_BOOL);
+ case INT:
+ return long(GET_INT);
+ case LONG:
+ return GET_LONG;
+ case FLOAT:
+ return long(GET_FLOAT);
+ case DOUBLE:
+ return long(GET_DOUBLE);
+ case STRING:
+ case UNKNOWN:
+ return strtol(GET_STRING.c_str(), 0, 0);
+ }
}
SGValue::getFloatValue () const
{
switch (_type) {
+ case ALIAS:
+ return _value.alias->getFloatValue();
case BOOL:
- return (float)GET_BOOL;
+ return float(GET_BOOL);
case INT:
- return (float)GET_INT;
+ return float(GET_INT);
+ case LONG:
+ return float(GET_LONG);
case FLOAT:
return GET_FLOAT;
case DOUBLE:
- return GET_DOUBLE;
+ return float(GET_DOUBLE);
case STRING:
case UNKNOWN:
return atof(GET_STRING.c_str());
}
+
+ return 0.0;
}
SGValue::getDoubleValue () const
{
switch (_type) {
+ case ALIAS:
+ return _value.alias->getDoubleValue();
case BOOL:
- return (double)GET_BOOL;
+ return double(GET_BOOL);
case INT:
- return (double)GET_INT;
+ return double(GET_INT);
+ case LONG:
+ return double(GET_LONG);
case FLOAT:
- return (double)GET_FLOAT;
+ return double(GET_FLOAT);
case DOUBLE:
return GET_DOUBLE;
case STRING:
case UNKNOWN:
- return (double)atof(GET_STRING.c_str());
+ return strtod(GET_STRING.c_str(), 0);
}
+
+ return 0.0;
}
char buf[128];
switch (_type) {
+ case ALIAS:
+ return _value.alias->getStringValue();
case BOOL:
if (GET_BOOL)
return "true";
case INT:
sprintf(buf, "%d", GET_INT);
return buf;
+ case LONG:
+ sprintf(buf, "%ld", GET_LONG);
+ return buf;
case FLOAT:
sprintf(buf, "%f", GET_FLOAT);
return buf;
case DOUBLE:
- sprintf(buf, "%lf", GET_DOUBLE);
+ sprintf(buf, "%f", GET_DOUBLE);
return buf;
case STRING:
case UNKNOWN:
return GET_STRING;
}
+
+ return "";
}
}
switch (_type) {
+ case ALIAS:
+ return _value.alias->setBoolValue(value);
case BOOL:
return SET_BOOL(value);
case INT:
- return SET_INT((int)value);
+ return SET_INT(int(value));
+ case LONG:
+ return SET_LONG(long(value));
case FLOAT:
- return SET_FLOAT((float)value);
+ return SET_FLOAT(float(value));
case DOUBLE:
- return SET_DOUBLE((double)value);
+ return SET_DOUBLE(double(value));
case STRING:
return SET_STRING(value ? "true" : "false");
}
}
switch (_type) {
+ case ALIAS:
+ return _value.alias->setIntValue(value);
case BOOL:
return SET_BOOL(value == 0 ? false : true);
case INT:
return SET_INT(value);
+ case LONG:
+ return SET_LONG(long(value));
case FLOAT:
- return SET_FLOAT((float)value);
+ return SET_FLOAT(float(value));
case DOUBLE:
- return SET_DOUBLE((double)value);
+ return SET_DOUBLE(double(value));
+ case STRING: {
+ char buf[128];
+ sprintf(buf, "%d", value);
+ return SET_STRING(buf);
+ }
+ }
+
+ return false;
+}
+
+
+/**
+ * Set a long value.
+ */
+bool
+SGValue::setLongValue (long value)
+{
+ if (_type == UNKNOWN) {
+ clear_value();
+ _value.long_val = new SGRawValueInternal<long>;
+ _type = LONG;
+ }
+
+ switch (_type) {
+ case ALIAS:
+ return _value.alias->setLongValue(value);
+ case BOOL:
+ return SET_BOOL(value == 0L ? false : true);
+ case INT:
+ return SET_INT(int(value));
+ case LONG:
+ return SET_LONG(value);
+ case FLOAT:
+ return SET_FLOAT(float(value));
+ case DOUBLE:
+ return SET_DOUBLE(double(value));
case STRING: {
char buf[128];
sprintf(buf, "%d", value);
}
switch (_type) {
+ case ALIAS:
+ return _value.alias->setFloatValue(value);
case BOOL:
return SET_BOOL(value == 0.0 ? false : true);
case INT:
- return SET_INT((int)value);
+ return SET_INT(int(value));
+ case LONG:
+ return SET_LONG(long(value));
case FLOAT:
return SET_FLOAT(value);
case DOUBLE:
- return SET_DOUBLE((double)value);
+ return SET_DOUBLE(double(value));
case STRING: {
char buf[128];
sprintf(buf, "%f", value);
}
switch (_type) {
+ case ALIAS:
+ return _value.alias->setDoubleValue(value);
case BOOL:
return SET_BOOL(value == 0.0L ? false : true);
case INT:
- return SET_INT((int)value);
+ return SET_INT(int(value));
+ case LONG:
+ return SET_LONG(long(value));
case FLOAT:
- return SET_FLOAT((float)value);
+ return SET_FLOAT(float(value));
case DOUBLE:
return SET_DOUBLE(value);
case STRING: {
}
switch (_type) {
+ case ALIAS:
+ return _value.alias->setStringValue(value);
case BOOL:
return SET_BOOL((value == "true" || atoi(value.c_str())) ? true : false);
case INT:
return SET_INT(atoi(value.c_str()));
+ case LONG:
+ return SET_LONG(strtol(value.c_str(), 0, 0));
case FLOAT:
return SET_FLOAT(atof(value.c_str()));
case DOUBLE:
- return SET_DOUBLE((double)atof(value.c_str()));
+ return SET_DOUBLE(strtod(value.c_str(), 0));
case STRING:
return SET_STRING(value);
}
SGValue::setUnknownValue (string value)
{
switch (_type) {
+ case ALIAS:
+ return _value.alias->setUnknownValue(value);
case BOOL:
return SET_BOOL((value == "true" || atoi(value.c_str())) ? true : false);
case INT:
return SET_INT(atoi(value.c_str()));
+ case LONG:
+ return SET_LONG(strtol(value.c_str(), 0, 0));
case FLOAT:
return SET_FLOAT(atof(value.c_str()));
case DOUBLE:
- return SET_DOUBLE((double)atof(value.c_str()));
+ return SET_DOUBLE(strtod(value.c_str(), 0));
case STRING:
case UNKNOWN:
return SET_STRING(value);
bool
SGValue::tie (const SGRawValue<bool> &value, bool use_default)
{
- if (_tied)
+ if (_type == ALIAS)
+ return _value.alias->tie(value, use_default);
+ else if (_tied)
return false;
- bool old_val;
+ bool old_val = false;
if (use_default)
old_val = getBoolValue();
bool
SGValue::tie (const SGRawValue<int> &value, bool use_default)
{
- if (_tied)
+ if (_type == ALIAS)
+ return _value.alias->tie(value, use_default);
+ else if (_tied)
return false;
- int old_val;
+ int old_val = 0;
if (use_default)
old_val = getIntValue();
}
+/**
+ * Tie a long value.
+ */
+bool
+SGValue::tie (const SGRawValue<long> &value, bool use_default)
+{
+ if (_type == ALIAS)
+ return _value.alias->tie(value, use_default);
+ else if (_tied)
+ return false;
+
+ long old_val;
+ if (use_default)
+ old_val = getLongValue();
+
+ clear_value();
+ _type = LONG;
+ _tied = true;
+ _value.long_val = value.clone();
+
+ if (use_default)
+ setLongValue(old_val);
+
+ return true;
+}
+
+
/**
* Tie a float value.
*/
bool
SGValue::tie (const SGRawValue<float> &value, bool use_default)
{
- if (_tied)
+ if (_type == ALIAS)
+ return _value.alias->tie(value, use_default);
+ else if (_tied)
return false;
- float old_val;
+ float old_val = 0.0;
if (use_default)
old_val = getFloatValue();
bool
SGValue::tie (const SGRawValue<double> &value, bool use_default)
{
- if (_tied)
+ if (_type == ALIAS)
+ return _value.alias->tie(value, use_default);
+ else if (_tied)
return false;
- double old_val;
+ double old_val = 0.0;
if (use_default)
old_val = getDoubleValue();
bool
SGValue::tie (const SGRawValue<string> &value, bool use_default)
{
- if (_tied)
+ if (_type == ALIAS)
+ return _value.alias->tie(value, use_default);
+ else if (_tied)
return false;
string old_val;
return false;
switch (_type) {
+ case ALIAS: {
+ return _value.alias->untie();
+ }
case BOOL: {
bool val = getBoolValue();
clear_value();
SET_INT(val);
break;
}
+ case LONG: {
+ long val = getLongValue();
+ clear_value();
+ _value.long_val = new SGRawValueInternal<long>;
+ SET_LONG(val);
+ break;
+ }
case FLOAT: {
float val = getFloatValue();
clear_value();
////////////////////////////////////////////////////////////////////////
+/**
+ * Utility function: given a value, find the property node.
+ */
+static SGPropertyNode *
+find_node_by_value (SGPropertyNode * start_node, const SGValue * value)
+{
+ if (start_node->getValue() == value) {
+ return start_node;
+ } else for (int i = 0; i < start_node->nChildren(); i++) {
+ SGPropertyNode * child =
+ find_node_by_value(start_node->getChild(i), value);
+ if (child != 0)
+ return child;
+ }
+ return 0;
+}
+
+
/**
* Default constructor: always creates a root node.
*/
SGPropertyNode::SGPropertyNode ()
- : _value(0), _name(""), _index(0), _parent(0)
+ : _value(0), _name(""), _index(0), _parent(0), _target(0)
{
}
*/
SGPropertyNode::SGPropertyNode (const string &name,
int index, SGPropertyNode * parent)
- : _value(0), _name(name), _index(index), _parent(parent)
+ : _value(0), _name(name), _index(index), _parent(parent), _target(0)
{
}
+
+/**
+ * Destructor.
+ */
SGPropertyNode::~SGPropertyNode ()
{
delete _value;
- for (int i = 0; i < _children.size(); i++)
+ for (int i = 0; i < (int)_children.size(); i++)
delete _children[i];
}
+
+/**
+ * Get a value, optionally creating it if not present.
+ */
+SGValue *
+SGPropertyNode::getValue (bool create)
+{
+ if (_value == 0 && create)
+ _value = new SGValue();
+ return _value;
+}
+
+
+/**
+ * Alias to another node.
+ */
+bool
+SGPropertyNode::alias (SGPropertyNode * target)
+{
+ if (_value == 0)
+ _value = new SGValue();
+ _target = target;
+ return _value->alias(target->getValue(true));
+}
+
+
+/**
+ * Alias to another node by path.
+ */
+bool
+SGPropertyNode::alias (const string &path)
+{
+ return alias(getNode(path, true));
+}
+
+
+/**
+ * Remove an alias.
+ */
+bool
+SGPropertyNode::unalias ()
+{
+ _target = 0;
+ return (_value != 0 ? _value->unalias() : false);
+}
+
+
+/**
+ * Test whether this node is aliased.
+ */
+bool
+SGPropertyNode::isAlias () const
+{
+ return (_value != 0 ? _value->isAlias() : false);
+}
+
+
+/**
+ * Get the target of an alias.
+ *
+ * This is tricky, because it is actually the value that is aliased,
+ * and someone could realias or unalias the value directly without
+ * going through the property node. The node caches its best guess,
+ * but it may have to search the whole property tree.
+ *
+ * @return The target node for the alias, or 0 if the node is not aliased.
+ */
+SGPropertyNode *
+SGPropertyNode::getAliasTarget ()
+{
+ if (_value == 0 || !_value->isAlias()) {
+ return 0;
+ } else if (_target != 0 && _target->getValue() == _value->getAlias()) {
+ return _target;
+ } else {
+ _target = find_node_by_value(getRootNode(), _value->getAlias());
+ }
+}
+
+
+const SGPropertyNode *
+SGPropertyNode::getAliasTarget () const
+{
+ if (_value == 0 || !_value->isAlias()) {
+ return 0;
+ } else if (_target != 0 && _target->getValue() == _value->getAlias()) {
+ return _target;
+ } else {
+ // FIXME: const cast
+ _target =
+ find_node_by_value((SGPropertyNode *)getRootNode(), _value->getAlias());
+ }
+}
+
+
+/**
+ * Get a non-const child by index.
+ */
SGPropertyNode *
SGPropertyNode::getChild (int position)
{
return 0;
}
+
+/**
+ * Get a const child by index.
+ */
const SGPropertyNode *
SGPropertyNode::getChild (int position) const
{
return 0;
}
+
+/**
+ * Get a non-const child by name and index, creating if necessary.
+ */
SGPropertyNode *
SGPropertyNode::getChild (const string &name, int index, bool create)
{
int pos = find_child(name, index, _children);
if (pos >= 0) {
- return getChild(pos);
+ return _children[pos];
} else if (create) {
_children.push_back(new SGPropertyNode(name, index, this));
return _children[_children.size()-1];
}
}
+
+/**
+ * Get a const child by name and index.
+ */
const SGPropertyNode *
SGPropertyNode::getChild (const string &name, int index) const
{
int pos = find_child(name, index, _children);
if (pos >= 0)
- _children[_children.size()-1];
+ return _children[pos];
else
return 0;
}
-class CompareIndices
-{
-public:
- int operator() (const SGPropertyNode * n1, const SGPropertyNode *n2) const {
- return (n1->getIndex() < n2->getIndex());
- }
-};
-
-
/**
* Get all children with the same name (but different indices).
*/
/**
- * Get all children with the same name (but different indices).
+ * Get all children const with the same name (but different indices).
*/
vector<const SGPropertyNode *>
SGPropertyNode::getChildren (const string &name) const
return SGValue::UNKNOWN;
}
+
bool
SGPropertyNode::getBoolValue () const
{
: _value->getIntValue());
}
+long
+SGPropertyNode::getLongValue () const
+{
+ return (_value == 0 ? SGRawValue<long>::DefaultValue
+ : _value->getLongValue());
+}
+
float
SGPropertyNode::getFloatValue () const
{
return _value->setIntValue(val);
}
+bool
+SGPropertyNode::setLongValue (long val)
+{
+ if (_value == 0)
+ _value = new SGValue();
+ return _value->setLongValue(val);
+}
+
bool
SGPropertyNode::setFloatValue (float val)
{
bool
SGPropertyNode::tie (const SGRawValue<bool> &rawValue, bool useDefault)
{
- return (_value == 0 ? false : _value->tie(rawValue, useDefault));
+ if (_value == 0)
+ _value = new SGValue();
+ return _value->tie(rawValue, useDefault);
}
bool
SGPropertyNode::tie (const SGRawValue<int> &rawValue, bool useDefault)
{
- return (_value == 0 ? false : _value->tie(rawValue, useDefault));
+ if (_value == 0)
+ _value = new SGValue();
+ return _value->tie(rawValue, useDefault);
+}
+
+bool
+SGPropertyNode::tie (const SGRawValue<long> &rawValue, bool useDefault)
+{
+ if (_value == 0)
+ _value = new SGValue();
+ return _value->tie(rawValue, useDefault);
}
bool
SGPropertyNode::tie (const SGRawValue<float> &rawValue, bool useDefault)
{
- return (_value == 0 ? false : _value->tie(rawValue, useDefault));
+ if (_value == 0)
+ _value = new SGValue();
+ return _value->tie(rawValue, useDefault);
}
bool
SGPropertyNode::tie (const SGRawValue<double> &rawValue, bool useDefault)
{
- return (_value == 0 ? false : _value->tie(rawValue, useDefault));
+ if (_value == 0)
+ _value = new SGValue();
+ return _value->tie(rawValue, useDefault);
}
bool
SGPropertyNode::tie (const SGRawValue<string> &rawValue, bool useDefault)
{
- return (_value == 0 ? false : _value->tie(rawValue, useDefault));
+ if (_value == 0)
+ _value = new SGValue();
+ return _value->tie(rawValue, useDefault);
}
bool
SGPropertyNode * node = getNode(relative_path, create);
if (node != 0 && !node->hasValue())
node->setUnknownValue("");
- return (node == 0 ? 0 : node->getValue());
+ return (node == 0 ? 0 : node->getValue(create));
}
}
+/**
+ * Get a long value for another node.
+ */
+long
+SGPropertyNode::getLongValue (const string &relative_path,
+ long defaultValue) const
+{
+ const SGPropertyNode * node = getNode(relative_path);
+ return (node == 0 ? defaultValue : node->getLongValue());
+}
+
+
/**
* Get a float value for another node.
*/
}
+/**
+ * Set a long value for another node.
+ */
+bool
+SGPropertyNode::setLongValue (const string &relative_path, long value)
+{
+ return getNode(relative_path, true)->setLongValue(value);
+}
+
+
/**
* Set a float value for another node.
*/
bool
SGPropertyNode::tie (const string &relative_path,
const SGRawValue<bool> &rawValue,
- bool useDefault = true)
+ bool useDefault)
{
return getNode(relative_path, true)->tie(rawValue, useDefault);
}
bool
SGPropertyNode::tie (const string &relative_path,
const SGRawValue<int> &rawValue,
- bool useDefault = true)
+ bool useDefault)
+{
+ return getNode(relative_path, true)->tie(rawValue, useDefault);
+}
+
+
+/**
+ * Tie a node reached by a relative path, creating it if necessary.
+ */
+bool
+SGPropertyNode::tie (const string &relative_path,
+ const SGRawValue<long> &rawValue,
+ bool useDefault)
{
return getNode(relative_path, true)->tie(rawValue, useDefault);
}
bool
SGPropertyNode::tie (const string &relative_path,
const SGRawValue<float> &rawValue,
- bool useDefault = true)
+ bool useDefault)
{
return getNode(relative_path, true)->tie(rawValue, useDefault);
}
bool
SGPropertyNode::tie (const string &relative_path,
const SGRawValue<double> &rawValue,
- bool useDefault = true)
+ bool useDefault)
{
return getNode(relative_path, true)->tie(rawValue, useDefault);
}
bool
SGPropertyNode::tie (const string &relative_path,
const SGRawValue<string> &rawValue,
- bool useDefault = true)
+ bool useDefault)
{
return getNode(relative_path, true)->tie(rawValue, useDefault);
}
projects / simgear.git / blobdiff