You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
75 lines
2.6 KiB
75 lines
2.6 KiB
// © 2016 and later: Unicode, Inc. and others.
|
|
// License & terms of use: http://www.unicode.org/copyright.html
|
|
/*
|
|
*******************************************************************************
|
|
*
|
|
* Copyright (C) 2000, International Business Machines
|
|
* Corporation and others. All Rights Reserved.
|
|
*
|
|
*******************************************************************************
|
|
*
|
|
* File writejava.c
|
|
*
|
|
* Modification History:
|
|
*
|
|
* Date Name Description
|
|
* 01/11/02 Ram Creation.
|
|
*******************************************************************************
|
|
*/
|
|
|
|
#ifndef RLE_H
|
|
#define RLE_H 1
|
|
|
|
#include "unicode/utypes.h"
|
|
#include "unicode/ustring.h"
|
|
|
|
U_CDECL_BEGIN
|
|
/**
|
|
* Construct a string representing a byte array. Use run-length encoding.
|
|
* Two bytes are packed into a single char, with a single extra zero byte at
|
|
* the end if needed. A byte represents itself, unless it is the
|
|
* ESCAPE_BYTE. Then the following notations are possible:
|
|
* ESCAPE_BYTE ESCAPE_BYTE ESCAPE_BYTE literal
|
|
* ESCAPE_BYTE n b n instances of byte b
|
|
* Since an encoded run occupies 3 bytes, we only encode runs of 4 or
|
|
* more bytes. Thus we have n > 0 and n != ESCAPE_BYTE and n <= 0xFF.
|
|
* If we encounter a run where n == ESCAPE_BYTE, we represent this as:
|
|
* b ESCAPE_BYTE n-1 b
|
|
* The ESCAPE_BYTE value is chosen so as not to collide with commonly
|
|
* seen values.
|
|
*/
|
|
int32_t
|
|
byteArrayToRLEString(const uint8_t* src,int32_t srcLen, uint16_t* buffer,int32_t bufLen, UErrorCode* status);
|
|
|
|
|
|
/**
|
|
* Construct a string representing a char array. Use run-length encoding.
|
|
* A character represents itself, unless it is the ESCAPE character. Then
|
|
* the following notations are possible:
|
|
* ESCAPE ESCAPE ESCAPE literal
|
|
* ESCAPE n c n instances of character c
|
|
* Since an encoded run occupies 3 characters, we only encode runs of 4 or
|
|
* more characters. Thus we have n > 0 and n != ESCAPE and n <= 0xFFFF.
|
|
* If we encounter a run where n == ESCAPE, we represent this as:
|
|
* c ESCAPE n-1 c
|
|
* The ESCAPE value is chosen so as not to collide with commonly
|
|
* seen values.
|
|
*/
|
|
int32_t
|
|
usArrayToRLEString(const uint16_t* src,int32_t srcLen,uint16_t* buffer, int32_t bufLen,UErrorCode* status);
|
|
|
|
/**
|
|
* Construct an array of bytes from a run-length encoded string.
|
|
*/
|
|
int32_t
|
|
rleStringToByteArray(uint16_t* src, int32_t srcLen, uint8_t* target, int32_t tgtLen, UErrorCode* status);
|
|
/**
|
|
* Construct an array of shorts from a run-length encoded string.
|
|
*/
|
|
int32_t
|
|
rleStringToUCharArray(uint16_t* src, int32_t srcLen, uint16_t* target, int32_t tgtLen, UErrorCode* status);
|
|
|
|
U_CDECL_END
|
|
|
|
#endif
|