185 lines
4.8 KiB
C++
185 lines
4.8 KiB
C++
/******************************************************************************
|
|
* Copyright © {1996-1999}, International Business Machines Corporation and others. All Rights Reserved.
|
|
******************************************************************************
|
|
*/
|
|
|
|
#ifndef PTNENTRY_H
|
|
#define PTNENTRY_H
|
|
|
|
#include "utypes.h"
|
|
#include "unistr.h"
|
|
#include "coll.h"
|
|
#include "normlzr.h"
|
|
|
|
/**
|
|
*
|
|
* Utility class for normalizing and merging patterns for collation.
|
|
* This is to be used with MergeCollation for adding patterns to an
|
|
* existing rule table.
|
|
*/
|
|
/*
|
|
* Created by: Mark Davis, Helena Shih
|
|
*
|
|
* Modification History:
|
|
* Date Name Description
|
|
*
|
|
* 8/18/97 helena Added internal API documentation.
|
|
* 8/14/98 erm Synched with 1.2 version of PatternEntry.java
|
|
* 04/23/99 stephen Removed EDecompositionMode, merged with
|
|
* Normalizer::EMode
|
|
*/
|
|
class PatternEntry
|
|
{
|
|
|
|
friend class MergeCollation;
|
|
friend class PointerToPatternEntry;
|
|
friend class VectorOfPointersToPatternEntry;
|
|
|
|
public:
|
|
|
|
/**
|
|
* Gets the extension, quoted if necessary, of this pattern entry.
|
|
* @param toAddTo the result string buffer.
|
|
*/
|
|
void appendQuotedExtension(UnicodeString& toAddTo) const;
|
|
|
|
/**
|
|
* Gets the current chars, quoted if necessary, of this pattern entry.
|
|
*/
|
|
void appendQuotedChars(UnicodeString& toAddTo) const;
|
|
|
|
/**
|
|
* Compares two pattern entry objects.
|
|
* @param other the other pattern entry object.
|
|
* @return TRUE if the pattern entry objects are the same, FALSE otherwise.
|
|
*/
|
|
bool_t equals(const PatternEntry& other) const;
|
|
|
|
/**
|
|
* Gets the strength of this entry.
|
|
* @return the strength of this pattern entry.
|
|
*/
|
|
|
|
int32_t getStrength(void) const;
|
|
|
|
/**
|
|
* Gets the extension characters.
|
|
* @param the extension string reference.
|
|
* @return the extension chars of this pattern entry.
|
|
*/
|
|
const UnicodeString& getExtension(UnicodeString& ext) const;
|
|
|
|
/**
|
|
* Gets the core characters.
|
|
* @param the char string reference.
|
|
* @return the char string of this pattern entry.
|
|
*/
|
|
const UnicodeString& getChars(UnicodeString& chars) const;
|
|
|
|
/**
|
|
* Used to parse a pattern into a list
|
|
* of PatternEntry's.
|
|
*/
|
|
|
|
class Parser
|
|
{
|
|
public:
|
|
Parser(const UnicodeString &pattern, Normalizer::EMode decompMode);
|
|
|
|
Parser(const Parser &that);
|
|
|
|
Parser &operator=(const Parser &that);
|
|
|
|
~Parser();
|
|
|
|
PatternEntry *next(UErrorCode &status);
|
|
|
|
private:
|
|
UnicodeString pattern;
|
|
int32_t index;
|
|
Normalizer::EMode fDecompMode;
|
|
|
|
UnicodeString newChars;
|
|
UnicodeString newExtensions;
|
|
};
|
|
|
|
friend class Parser;
|
|
|
|
|
|
/**
|
|
* For debugging only.
|
|
*/
|
|
UnicodeString& toString(UnicodeString&) const;
|
|
|
|
private:
|
|
|
|
/** Constructor and destructor
|
|
*/
|
|
PatternEntry();
|
|
|
|
/**
|
|
* Creates a new pattern entry object.
|
|
*/
|
|
PatternEntry(int32_t strength,
|
|
const UnicodeString& chars,
|
|
const UnicodeString& extension,
|
|
Normalizer::EMode decompMode);
|
|
/**
|
|
* Copy constructor.
|
|
*/
|
|
PatternEntry(const PatternEntry& other);
|
|
/**
|
|
* Destructor.
|
|
*/
|
|
~PatternEntry();
|
|
|
|
/** assignment
|
|
*/
|
|
const PatternEntry& operator=(const PatternEntry& other);
|
|
|
|
/**
|
|
* Transforms the pattern entry into displayable text and adds
|
|
* the text to the buffer, toAddTo.
|
|
* @param toAddTo the result buffer.
|
|
* @param showExtension whether to add the extension chars or not.
|
|
* @param showWhiteSpace whether to add the white spaces or not.
|
|
* @param lastEntry the last pattern entry that was referenced.
|
|
*/
|
|
void addToBuffer(UnicodeString& toAddTo,
|
|
bool_t showExtension,
|
|
bool_t showWhiteSpace,
|
|
const PatternEntry* lastEntry) const;
|
|
|
|
/**
|
|
* Gets the extension, quoted if necessary, of this pattern entry.
|
|
* @param chars the chars string
|
|
* @param toAddTo the result string buffer.
|
|
*/
|
|
static void appendQuoted(const UnicodeString& chars, UnicodeString& toAddTo);
|
|
|
|
/**
|
|
* Checks if the Unicode character is a special character, for example, '@'
|
|
* is considered a special character. The values of a special character is
|
|
* of the following range,
|
|
* <pre>punctuation symbols :
|
|
* 0x0020 - 0x002F
|
|
* 0x003A - 0x003F
|
|
* 0x005B - 0x0060
|
|
* 0x007B - 0x007E
|
|
* </pre>
|
|
* @param the Unicode character
|
|
* @return TRUE if the character is a special character, FALSE otherwise.
|
|
*/
|
|
static bool_t isSpecialChar(UChar ch);
|
|
|
|
int32_t strength;
|
|
UnicodeString chars;
|
|
UnicodeString extension;
|
|
|
|
static const int32_t RESET;
|
|
static const int32_t UNSET;
|
|
};
|
|
|
|
|
|
#endif // _PTNENTRY
|