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/**************************************************************
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*
*************************************************************/
#ifndef TX3_WTRATREE_HXX
#define TX3_WTRATREE_HXX
// USED
// Base Classes
// Components
// Parameters
#include <tools/string.hxx>
const INT16 C_NR_OF_WTT_RESULTS = 5;
const INT16 C_NR_OF_POSSIBLE_CHARS = 256;
typedef unsigned char u_char;
typedef const char * constr;
class WTT_Node;
/** @task
This class implements the functionality, that class WordTransformer
offers.
WordTransformer is dependent of this class, but NOT the other way!
**/
class WordTransTree
{
public:
enum E_Result
{
OK = 0,
HOTKEY_LOST,
OUTPUT_OVERFLOW
};
// LIFECYCLE
WordTransTree(
CharSet i_nWorkingCharSet = RTL_TEXTENCODING_MS_1252);
void SetCharSet(
CharSet i_nWorkingCharSet);
~WordTransTree();
void AddWordPair(
const ByteString & i_sOldString,
const ByteString & i_sReplaceString );
// OPERATIONS
void InitTransformation(
const char * i_sInput, /// [!=0], a range of i_nInputLength must be valid memory for read.
UINT32 i_nInputLength,
UINT32 i_nOutputMaxLength = STRING_MAXLEN - 12 );
E_Result TransformNextToken();
// INQUIRY
sal_Bool TextEndReached() const;
const char * Output() const;
// These 3 functions are valid between two calls of
// TransformNextToken():
E_Result CurResult() const;
ByteString CurReplacedString() const;
ByteString CurReplacingString() const;
char CurHotkey() const;
private:
// SERVICE FUNCTONS
UINT8 CalculateBranch(
u_char i_cInputChar ) const;
void Handle_Hotkey();
void Handle_TokenToKeep();
void Handle_TokenToTransform();
// DATA
// Fixed data
const u_char * sInput;
UINT32 nInputLength;
const u_char * pInputEnd;
u_char * sOutput; // DYN
UINT32 nOutputMaxLength;
WTT_Node * dpParsingTreeTop; // DYN
WTT_Node * pUnknownAlpha;
u_char cChar2Branch[C_NR_OF_POSSIBLE_CHARS];
u_char c_AE, c_OE, c_UE, c_ae, c_oe, c_ue;
// Working data
const u_char * pInputCurTokenStart;
const u_char * pInputPosition;
u_char * pOutputPosition;
WTT_Node * pCurParseNode;
// Data which are valid only after a completed call to TransformNextToken()
E_Result eCurResult;
u_char cCurHotkey; // Letter which is used as hotkey
u_char cCurHotkeySign; // Letter which is used to assign hotkey ('~'or '&') .
};
inline sal_Bool
WordTransTree::TextEndReached() const
{ return pInputPosition == pInputEnd; }
inline const char *
WordTransTree::Output() const
{ return TextEndReached() ? (constr) sOutput : ""; }
inline WordTransTree::E_Result
WordTransTree::CurResult() const
{ return eCurResult; }
inline ByteString
WordTransTree::CurReplacedString() const
{ return ByteString((constr) pInputCurTokenStart,pInputPosition-pInputCurTokenStart); }
inline char
WordTransTree::CurHotkey() const
{ return cCurHotkey; }
inline UINT8
WordTransTree::CalculateBranch(u_char i_cInputChar) const
{ return cChar2Branch[i_cInputChar]; }
#endif
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