336 lines
13 KiB
C++
336 lines
13 KiB
C++
/**
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* @file llxmlnode.h
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* @brief LLXMLNode definition
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*
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* $LicenseInfo:firstyear=2000&license=viewerlgpl$
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* Second Life Viewer Source Code
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* Copyright (C) 2010, Linden Research, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License only.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
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* $/LicenseInfo$
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*/
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#ifndef LL_LLXMLNODE_H
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#define LL_LLXMLNODE_H
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#ifndef XML_STATIC
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#define XML_STATIC
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#endif
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#ifdef LL_USESYSTEMLIBS
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#include <expat.h>
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#else
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#include "expat/expat.h"
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#endif
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#include <map>
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#include "indra_constants.h"
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#include "llrefcount.h"
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#include "llpointer.h"
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#include "llstring.h"
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#include "llstringtable.h"
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#include "llfile.h"
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#include "lluuid.h"
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class LLVector3;
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class LLVector3d;
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class LLQuaternion;
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class LLColor4;
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class LLColor4U;
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struct CompareAttributes
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{
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bool operator()(const LLStringTableEntry* const lhs, const LLStringTableEntry* const rhs) const
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{
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if (lhs == NULL)
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return true;
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if (rhs == NULL)
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return true;
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return strcmp(lhs->mString, rhs->mString) < 0;
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}
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};
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// Defines a simple node hierarchy for reading and writing task objects
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class LLXMLNode;
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typedef LLPointer<LLXMLNode> LLXMLNodePtr;
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typedef std::multimap<std::string, LLXMLNodePtr > LLXMLNodeList;
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typedef std::multimap<const LLStringTableEntry *, LLXMLNodePtr > LLXMLChildList;
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typedef std::map<const LLStringTableEntry *, LLXMLNodePtr, CompareAttributes> LLXMLAttribList;
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class LLColor4;
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class LLColor4U;
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class LLQuaternion;
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class LLVector3;
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class LLVector3d;
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class LLVector4;
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class LLVector4U;
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struct LLXMLChildren : public LLThreadSafeRefCount
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{
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LLXMLChildList map; // Map of children names->pointers
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LLXMLNodePtr head; // Head of the double-linked list
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LLXMLNodePtr tail; // Tail of the double-linked list
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};
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typedef LLPointer<LLXMLChildren> LLXMLChildrenPtr;
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class LLXMLNode : public LLThreadSafeRefCount
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{
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public:
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enum ValueType
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{
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TYPE_CONTAINER, // A node which contains nodes
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TYPE_UNKNOWN, // A node loaded from file without a specified type
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TYPE_BOOLEAN, // "true" or "false"
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TYPE_INTEGER, // any integer type: U8, U32, S32, U64, etc.
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TYPE_FLOAT, // any floating point type: F32, F64
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TYPE_STRING, // a string
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TYPE_UUID, // a UUID
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TYPE_NODEREF, // the ID of another node in the hierarchy to reference
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};
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enum Encoding
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{
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ENCODING_DEFAULT = 0,
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ENCODING_DECIMAL,
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ENCODING_HEX,
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// ENCODING_BASE32, // Not implemented yet
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};
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protected:
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~LLXMLNode();
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public:
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LLXMLNode();
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LLXMLNode(const char* name, bool is_attribute);
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LLXMLNode(LLStringTableEntry* name, bool is_attribute);
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LLXMLNode(const LLXMLNode& rhs);
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LLXMLNodePtr deepCopy();
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bool isNull();
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bool deleteChild(LLXMLNode* child);
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void addChild(LLXMLNodePtr& new_child);
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void setParent(LLXMLNodePtr& new_parent); // reparent if necessary
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// Deserialization
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static bool parseFile(
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const std::string& filename,
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LLXMLNodePtr& node,
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LLXMLNode* defaults = nullptr);
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static bool parseBuffer(
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const char* buffer,
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U64 length,
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LLXMLNodePtr& node,
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LLXMLNode* defaults = nullptr);
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static bool parseStream(
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std::istream& str,
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LLXMLNodePtr& node,
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LLXMLNode* defaults = nullptr);
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static bool updateNode(
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LLXMLNodePtr& node,
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LLXMLNodePtr& update_node);
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static bool getLayeredXMLNode(LLXMLNodePtr& root, const std::vector<std::string>& paths);
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// Write standard XML file header:
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// <?xml version="1.0" encoding="utf-8" standalone="yes" ?>
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static void writeHeaderToFile(LLFILE *out_file);
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// Write XML to file with one attribute per line.
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// XML escapes values as they are written.
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void writeToFile(LLFILE *out_file, const std::string& indent = std::string(), bool use_type_decorations=true);
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void writeToOstream(std::ostream& output_stream, const std::string& indent = std::string(), bool use_type_decorations=true);
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// Utility
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void findName(const std::string& name, LLXMLNodeList &results);
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void findName(LLStringTableEntry* name, LLXMLNodeList &results);
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void findID(const std::string& id, LLXMLNodeList &results);
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virtual LLXMLNodePtr createChild(const char* name, bool is_attribute);
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virtual LLXMLNodePtr createChild(LLStringTableEntry* name, bool is_attribute);
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// Getters
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U32 getBoolValue(U32 expected_length, bool *array);
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U32 getByteValue(U32 expected_length, U8 *array, Encoding encoding = ENCODING_DEFAULT);
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U32 getIntValue(U32 expected_length, S32 *array, Encoding encoding = ENCODING_DEFAULT);
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U32 getUnsignedValue(U32 expected_length, U32 *array, Encoding encoding = ENCODING_DEFAULT);
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U32 getLongValue(U32 expected_length, U64 *array, Encoding encoding = ENCODING_DEFAULT);
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U32 getFloatValue(U32 expected_length, F32 *array, Encoding encoding = ENCODING_DEFAULT);
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U32 getDoubleValue(U32 expected_length, F64 *array, Encoding encoding = ENCODING_DEFAULT);
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U32 getStringValue(U32 expected_length, std::string *array);
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U32 getUUIDValue(U32 expected_length, LLUUID *array);
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U32 getNodeRefValue(U32 expected_length, LLXMLNode **array);
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bool hasAttribute(const char* name );
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bool getAttributeBOOL(const char* name, bool& value );
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bool getAttributeU8(const char* name, U8& value );
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bool getAttributeS8(const char* name, S8& value );
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bool getAttributeU16(const char* name, U16& value );
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bool getAttributeS16(const char* name, S16& value );
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bool getAttributeU32(const char* name, U32& value );
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bool getAttributeS32(const char* name, S32& value );
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bool getAttributeF32(const char* name, F32& value );
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bool getAttributeF64(const char* name, F64& value );
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bool getAttributeColor(const char* name, LLColor4& value );
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bool getAttributeColor4(const char* name, LLColor4& value );
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bool getAttributeColor4U(const char* name, LLColor4U& value );
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bool getAttributeVector3(const char* name, LLVector3& value );
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bool getAttributeVector3d(const char* name, LLVector3d& value );
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bool getAttributeQuat(const char* name, LLQuaternion& value );
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bool getAttributeUUID(const char* name, LLUUID& value );
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bool getAttributeString(const char* name, std::string& value );
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const ValueType& getType() const { return mType; }
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U32 getLength() const { return mLength; }
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U32 getPrecision() const { return mPrecision; }
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const std::string& getValue() const { return mValue; }
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std::string getSanitizedValue() const;
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std::string getTextContents() const;
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const LLStringTableEntry* getName() const { return mName; }
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bool hasName(const char* name) const { return mName == gStringTable.checkStringEntry(name); }
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bool hasName(const std::string& name) const { return mName == gStringTable.checkStringEntry(name.c_str()); }
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const std::string& getID() const { return mID; }
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U32 getChildCount() const;
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// getChild returns a Null LLXMLNode (not a NULL pointer) if there is no such child.
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// This child has no value so any getTYPEValue() calls on it will return 0.
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bool getChild(const char* name, LLXMLNodePtr& node, bool use_default_if_missing = true);
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bool getChild(const LLStringTableEntry* name, LLXMLNodePtr& node, bool use_default_if_missing = true);
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void getChildren(const char* name, LLXMLNodeList &children, bool use_default_if_missing = true) const;
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void getChildren(const LLStringTableEntry* name, LLXMLNodeList &children, bool use_default_if_missing = true) const;
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// recursively finds all children at any level matching name
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void getDescendants(const LLStringTableEntry* name, LLXMLNodeList &children) const;
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bool getAttribute(const char* name, LLXMLNodePtr& node, bool use_default_if_missing = true);
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bool getAttribute(const LLStringTableEntry* name, LLXMLNodePtr& node, bool use_default_if_missing = true);
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S32 getLineNumber();
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// The following skip over attributes
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LLXMLNodePtr getFirstChild() const;
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LLXMLNodePtr getNextSibling() const;
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LLXMLNodePtr getRoot();
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// Setters
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bool setAttributeString(const char* attr, const std::string& value);
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void setBoolValue(const bool value) { setBoolValue(1, &value); }
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void setByteValue(const U8 value, Encoding encoding = ENCODING_DEFAULT) { setByteValue(1, &value, encoding); }
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void setIntValue(const S32 value, Encoding encoding = ENCODING_DEFAULT) { setIntValue(1, &value, encoding); }
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void setUnsignedValue(const U32 value, Encoding encoding = ENCODING_DEFAULT) { setUnsignedValue(1, &value, encoding); }
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void setLongValue(const U64 value, Encoding encoding = ENCODING_DEFAULT) { setLongValue(1, &value, encoding); }
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void setFloatValue(const F32 value, Encoding encoding = ENCODING_DEFAULT, U32 precision = 0) { setFloatValue(1, &value, encoding); }
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void setDoubleValue(const F64 value, Encoding encoding = ENCODING_DEFAULT, U32 precision = 0) { setDoubleValue(1, &value, encoding); }
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void setStringValue(const std::string& value) { setStringValue(1, &value); }
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void setUUIDValue(const LLUUID value) { setUUIDValue(1, &value); }
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void setNodeRefValue(const LLXMLNode *value) { setNodeRefValue(1, &value); }
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void setBoolValue(U32 length, const bool *array);
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void setByteValue(U32 length, const U8 *array, Encoding encoding = ENCODING_DEFAULT);
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void setIntValue(U32 length, const S32 *array, Encoding encoding = ENCODING_DEFAULT);
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void setUnsignedValue(U32 length, const U32* array, Encoding encoding = ENCODING_DEFAULT);
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void setLongValue(U32 length, const U64 *array, Encoding encoding = ENCODING_DEFAULT);
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void setFloatValue(U32 length, const F32 *array, Encoding encoding = ENCODING_DEFAULT, U32 precision = 0);
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void setDoubleValue(U32 length, const F64 *array, Encoding encoding = ENCODING_DEFAULT, U32 precision = 0);
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void setStringValue(U32 length, const std::string *array);
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void setUUIDValue(U32 length, const LLUUID *array);
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void setNodeRefValue(U32 length, const LLXMLNode **array);
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void setValue(const std::string& value);
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void setName(const std::string& name);
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void setName(LLStringTableEntry* name);
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void setLineNumber(S32 line_number);
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// Escapes " (quot) ' (apos) & (amp) < (lt) > (gt)
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static std::string escapeXML(const std::string& xml);
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// Set the default node corresponding to this default node
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void setDefault(LLXMLNode *default_node);
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// Find the node within defaults_list which corresponds to this node
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void findDefault(LLXMLNode *defaults_list);
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void updateDefault();
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// Delete any child nodes that aren't among the tree's children, recursive
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void scrubToTree(LLXMLNode *tree);
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bool deleteChildren(const std::string& name);
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bool deleteChildren(LLStringTableEntry* name);
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void setAttributes(ValueType type, U32 precision, Encoding encoding, U32 length);
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// void appendValue(const std::string& value); // Unused
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// Unit Testing
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void createUnitTest(S32 max_num_children);
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bool performUnitTest(std::string &error_buffer);
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protected:
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bool removeChild(LLXMLNode* child);
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public:
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std::string mID; // The ID attribute of this node
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XML_Parser *mParser; // Temporary pointer while loading
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bool mIsAttribute; // Flag is only used for output formatting
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U32 mVersionMajor; // Version of this tag to use
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U32 mVersionMinor;
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U32 mLength; // If the length is nonzero, then only return arrays of this length
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U32 mPrecision; // The number of BITS per array item
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ValueType mType; // The value type
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Encoding mEncoding; // The value encoding
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S32 mLineNumber; // line number in source file, if applicable
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LLXMLNode* mParent; // The parent node
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LLXMLChildrenPtr mChildren; // The child nodes
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LLXMLAttribList mAttributes; // The attribute nodes
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LLXMLNodePtr mPrev; // Double-linked list previous node
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LLXMLNodePtr mNext; // Double-linked list next node
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static bool sStripEscapedStrings;
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static bool sStripWhitespaceValues;
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protected:
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LLStringTableEntry *mName; // The name of this node
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// The value of this node (use getters/setters only)
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// Values are not XML-escaped in memory
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// They may contain " (quot) ' (apos) & (amp) < (lt) > (gt)
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std::string mValue;
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LLXMLNodePtr mDefault; // Mirror node in the default tree
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static const char *skipWhitespace(const char *str);
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static const char *skipNonWhitespace(const char *str);
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static const char *parseInteger(const char *str, U64 *dest, bool *is_negative, U32 precision, Encoding encoding);
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static const char *parseFloat(const char *str, F64 *dest, U32 precision, Encoding encoding);
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bool isFullyDefault();
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};
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#endif // LL_LLXMLNODE
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