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/*
*******************************************************************************
*
* Copyright (C) 2002-2005, International Business Machines
* Corporation and others. All Rights Reserved.
*
*******************************************************************************
* file name: utf.h
* encoding: US-ASCII
* tab size: 8 (not used)
* indentation:4
*
* created on: 2002sep21
* created by: Markus W. Scherer
*/
/**
* \file
* \brief C API: Deprecated macros for Unicode string handling
*/
/**
*
* The macros in utf_old.h are all deprecated and their use discouraged.
* Some of the design principles behind the set of UTF macros
* have changed or proved impractical.
* Almost all of the old "UTF macros" are at least renamed.
* If you are looking for a new equivalent to an old macro, please see the
* comment at the old one.
*
* utf_old.h is included by utf.h after unicode/umachine.h
* and some common definitions, to not break old code.
*
* Brief summary of reasons for deprecation:
* - Switch on UTF_SIZE (selection of UTF-8/16/32 default string processing)
* was impractical.
* - Switch on UTF_SAFE etc. (selection of unsafe/safe/strict default string processing)
* was of little use and impractical.
* - Whole classes of macros became obsolete outside of the UTF_SIZE/UTF_SAFE
* selection framework: UTF32_ macros (all trivial)
* and UTF_ default and intermediate macros (all aliases).
* - The selection framework also caused many macro aliases.
* - Change in Unicode standard: "irregular" sequences (3.0) became illegal (3.2).
* - Change of language in Unicode standard:
* Growing distinction between internal x-bit Unicode strings and external UTF-x
* forms, with the former more lenient.
* Suggests renaming of UTF16_ macros to U16_.
* - The prefix "UTF_" without a width number confused some users.
* - "Safe" append macros needed the addition of an error indicator output.
* - "Safe" UTF-8 macros used legitimate (if rarely used) code point values
* to indicate error conditions.
* - The use of the "_CHAR" infix for code point operations confused some users.
*
* More details:
*
* Until ICU 2.2, utf.h theoretically allowed to choose among UTF-8/16/32
* for string processing, and among unsafe/safe/strict default macros for that.
*
* It proved nearly impossible to write non-trivial, high-performance code
* that is UTF-generic.
* Unsafe default macros would be dangerous for default string processing,
* and the main reason for the "strict" versions disappeared:
* Between Unicode 3.0 and 3.2 all "irregular" UTF-8 sequences became illegal.
* The only other conditions that "strict" checked for were non-characters,
* which are valid during processing. Only during text input/output should they
* be checked, and at that time other well-formedness checks may be
* necessary or useful as well.
* This can still be done by using U16_NEXT and U_IS_UNICODE_NONCHAR
* or U_IS_UNICODE_CHAR.
*
* The old UTF8_..._SAFE macros also used some normal Unicode code points
* to indicate malformed sequences.
* The new UTF8_ macros without suffix use negative values instead.
*
* The entire contents of utf32.h was moved here without replacement
* because all those macros were trivial and
* were meaningful only in the framework of choosing the UTF size.
*
* See Jitterbug 2150 and its discussion on the ICU mailing list
* in September 2002.
*
* <hr>
*
* <em>Obsolete part</em> of pre-ICU 2.4 utf.h file documentation:
*
* <p>The original concept for these files was for ICU to allow
* in principle to set which UTF (UTF-8/16/32) is used internally
* by defining UTF_SIZE to either 8, 16, or 32. utf.h would then define the UChar type
* accordingly. UTF-16 was the default.</p>
*
* <p>This concept has been abandoned.
* A lot of the ICU source code assumes UChar strings are in UTF-16.
* This is especially true for low-level code like
* conversion, normalization, and collation.
* The utf.h header enforces the default of UTF-16.
* The UTF-8 and UTF-32 macros remain for now for completeness and backward compatibility.</p>
*
* <p>Accordingly, utf.h defines UChar to be an unsigned 16-bit integer. If this matches wchar_t, then
* UChar is defined to be exactly wchar_t, otherwise uint16_t.</p>
*
* <p>UChar32 is defined to be a signed 32-bit integer (int32_t), large enough for a 21-bit
* Unicode code point (Unicode scalar value, 0..0x10ffff).
* Before ICU 2.4, the definition of UChar32 was similarly platform-dependent as
* the definition of UChar. For details see the documentation for UChar32 itself.</p>
*
* <p>utf.h also defines a number of C macros for handling single Unicode code points and
* for using UTF Unicode strings. It includes utf8.h, utf16.h, and utf32.h for the actual
* implementations of those macros and then aliases one set of them (for UTF-16) for general use.
* The UTF-specific macros have the UTF size in the macro name prefixes (UTF16_...), while
* the general alias macros always begin with UTF_...</p>
*
* <p>Many string operations can be done with or without error checking.
* Where such a distinction is useful, there are two versions of the macros, "unsafe" and "safe"
* ones with ..._UNSAFE and ..._SAFE suffixes. The unsafe macros are fast but may cause
* program failures if the strings are not well-formed. The safe macros have an additional, boolean
* parameter "strict". If strict is FALSE, then only illegal sequences are detected.
* Otherwise, irregular sequences and non-characters are detected as well (like single surrogates).
* Safe macros return special error code points for illegal/irregular sequences:
* Typically, U+ffff, or values that would result in a code unit sequence of the same length
* as the erroneous input sequence.<br>
* Note that _UNSAFE macros have fewer parameters: They do not have the strictness parameter, and
* they do not have start/length parameters for boundary checking.</p>
*
* <p>Here, the macros are aliased in two steps:
* In the first step, the UTF-specific macros with UTF16_ prefix and _UNSAFE and _SAFE suffixes are
* aliased according to the UTF_SIZE to macros with UTF_ prefix and the same suffixes and signatures.
* Then, in a second step, the default, general alias macros are set to use either the unsafe or
* the safe/not strict (default) or the safe/strict macro;
* these general macros do not have a strictness parameter.</p>
*
* <p>It is possible to change the default choice for the general alias macros to be unsafe, safe/not strict or safe/strict.
* The default is safe/not strict. It is not recommended to select the unsafe macros as the basis for
* Unicode string handling in ICU! To select this, define UTF_SAFE, UTF_STRICT, or UTF_UNSAFE.</p>
*
* <p>For general use, one should use the default, general macros with UTF_ prefix and no _SAFE/_UNSAFE suffix.
* Only in some cases it may be necessary to control the choice of macro directly and use a less generic alias.
* For example, if it can be assumed that a string is well-formed and the index will stay within the bounds,
* then the _UNSAFE version may be used.
* If a UTF-8 string is to be processed, then the macros with UTF8_ prefixes need to be used.</p>
*
* <hr>
*
* @deprecated ICU 2.4. Use the macros in utf.h, utf16.h, utf8.h instead.
*/
#ifndef __UTF_OLD_H__
#define __UTF_OLD_H__
#ifndef U_HIDE_DEPRECATED_API
/* utf.h must be included first. */
#ifndef __UTF_H__
# include "unicode/utf.h"
#endif
/* Formerly utf.h, part 1 --------------------------------------------------- */
#ifdef U_USE_UTF_DEPRECATES
/**
* Unicode string and array offset and index type.
* ICU always counts Unicode code units (UChars) for
* string offsets, indexes, and lengths, not Unicode code points.
*
* @obsolete ICU 2.6. Use int32_t directly instead since this API will be removed in that release.
*/
typedef int32_t UTextOffset;
#endif
/** Number of bits in a Unicode string code unit - ICU uses 16-bit Unicode. @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF_SIZE 16
/**
* The default choice for general Unicode string macros is to use the ..._SAFE macro implementations
* with strict=FALSE.
*
* @deprecated ICU 2.4. Obsolete, see utf_old.h.
*/
#define UTF_SAFE
/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#undef UTF_UNSAFE
/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#undef UTF_STRICT
/**
* <p>UTF8_ERROR_VALUE_1 and UTF8_ERROR_VALUE_2 are special error values for UTF-8,
* which need 1 or 2 bytes in UTF-8:<br>
* U+0015 = NAK = Negative Acknowledge, C0 control character<br>
* U+009f = highest C1 control character</p>
*
* <p>These are used by UTF8_..._SAFE macros so that they can return an error value
* that needs the same number of code units (bytes) as were seen by
* a macro. They should be tested with UTF_IS_ERROR() or UTF_IS_VALID().</p>
*
* @deprecated ICU 2.4. Obsolete, see utf_old.h.
*/
#define UTF8_ERROR_VALUE_1 0x15
/**
* See documentation on UTF8_ERROR_VALUE_1 for details.
*
* @deprecated ICU 2.4. Obsolete, see utf_old.h.
*/
#define UTF8_ERROR_VALUE_2 0x9f
/**
* Error value for all UTFs. This code point value will be set by macros with error
* checking if an error is detected.
*
* @deprecated ICU 2.4. Obsolete, see utf_old.h.
*/
#define UTF_ERROR_VALUE 0xffff
/**
* Is a given 32-bit code an error value
* as returned by one of the macros for any UTF?
*
* @deprecated ICU 2.4. Obsolete, see utf_old.h.
*/
#define UTF_IS_ERROR(c) \
(((c)&0xfffe)==0xfffe || (c)==UTF8_ERROR_VALUE_1 || (c)==UTF8_ERROR_VALUE_2)
/**
* This is a combined macro: Is c a valid Unicode value _and_ not an error code?
*
* @deprecated ICU 2.4. Obsolete, see utf_old.h.
*/
#define UTF_IS_VALID(c) \
(UTF_IS_UNICODE_CHAR(c) && \
(c)!=UTF8_ERROR_VALUE_1 && (c)!=UTF8_ERROR_VALUE_2)
/**
* Is this code unit or code point a surrogate (U+d800..U+dfff)?
* @deprecated ICU 2.4. Renamed to U_IS_SURROGATE and U16_IS_SURROGATE, see utf_old.h.
*/
#define UTF_IS_SURROGATE(uchar) (((uchar)&0xfffff800)==0xd800)
/**
* Is a given 32-bit code point a Unicode noncharacter?
*
* @deprecated ICU 2.4. Renamed to U_IS_UNICODE_NONCHAR, see utf_old.h.
*/
#define UTF_IS_UNICODE_NONCHAR(c) \
((c)>=0xfdd0 && \
((uint32_t)(c)<=0xfdef || ((c)&0xfffe)==0xfffe) && \
(uint32_t)(c)<=0x10ffff)
/**
* Is a given 32-bit value a Unicode code point value (0..U+10ffff)
* that can be assigned a character?
*
* Code points that are not characters include:
* - single surrogate code points (U+d800..U+dfff, 2048 code points)
* - the last two code points on each plane (U+__fffe and U+__ffff, 34 code points)
* - U+fdd0..U+fdef (new with Unicode 3.1, 32 code points)
* - the highest Unicode code point value is U+10ffff
*
* This means that all code points below U+d800 are character code points,
* and that boundary is tested first for performance.
*
* @deprecated ICU 2.4. Renamed to U_IS_UNICODE_CHAR, see utf_old.h.
*/
#define UTF_IS_UNICODE_CHAR(c) \
((uint32_t)(c)<0xd800 || \
((uint32_t)(c)>0xdfff && \
(uint32_t)(c)<=0x10ffff && \
!UTF_IS_UNICODE_NONCHAR(c)))
/* Formerly utf8.h ---------------------------------------------------------- */
/**
* Count the trail bytes for a UTF-8 lead byte.
* @deprecated ICU 2.4. Renamed to U8_COUNT_TRAIL_BYTES, see utf_old.h.
*/
#define UTF8_COUNT_TRAIL_BYTES(leadByte) (utf8_countTrailBytes[(uint8_t)leadByte])
/**
* Mask a UTF-8 lead byte, leave only the lower bits that form part of the code point value.
* @deprecated ICU 2.4. Renamed to U8_MASK_LEAD_BYTE, see utf_old.h.
*/
#define UTF8_MASK_LEAD_BYTE(leadByte, countTrailBytes) ((leadByte)&=(1<<(6-(countTrailBytes)))-1)
/** Is this this code point a single code unit (byte)? @deprecated ICU 2.4. Renamed to U8_IS_SINGLE, see utf_old.h. */
#define UTF8_IS_SINGLE(uchar) (((uchar)&0x80)==0)
/** Is this this code unit the lead code unit (byte) of a code point? @deprecated ICU 2.4. Renamed to U8_IS_LEAD, see utf_old.h. */
#define UTF8_IS_LEAD(uchar) ((uint8_t)((uchar)-0xc0)<0x3e)
/** Is this this code unit a trailing code unit (byte) of a code point? @deprecated ICU 2.4. Renamed to U8_IS_TRAIL, see utf_old.h. */
#define UTF8_IS_TRAIL(uchar) (((uchar)&0xc0)==0x80)
/** Does this scalar Unicode value need multiple code units for storage? @deprecated ICU 2.4. Use U8_LENGTH or test ((uint32_t)(c)>0x7f) instead, see utf_old.h. */
#define UTF8_NEED_MULTIPLE_UCHAR(c) ((uint32_t)(c)>0x7f)
/**
* Given the lead character, how many bytes are taken by this code point.
* ICU does not deal with code points >0x10ffff
* unless necessary for advancing in the byte stream.
*
* These length macros take into account that for values >0x10ffff
* the UTF8_APPEND_CHAR_SAFE macros would write the error code point 0xffff
* with 3 bytes.
* Code point comparisons need to be in uint32_t because UChar32
* may be a signed type, and negative values must be recognized.
*
* @deprecated ICU 2.4. Use U8_LENGTH instead, see utf_old.h.
*/
#if 1
# define UTF8_CHAR_LENGTH(c) \
((uint32_t)(c)<=0x7f ? 1 : \
((uint32_t)(c)<=0x7ff ? 2 : \
((uint32_t)((c)-0x10000)>0xfffff ? 3 : 4) \
) \
)
#else
# define UTF8_CHAR_LENGTH(c) \
((uint32_t)(c)<=0x7f ? 1 : \
((uint32_t)(c)<=0x7ff ? 2 : \
((uint32_t)(c)<=0xffff ? 3 : \
((uint32_t)(c)<=0x10ffff ? 4 : \
((uint32_t)(c)<=0x3ffffff ? 5 : \
((uint32_t)(c)<=0x7fffffff ? 6 : 3) \
) \
) \
) \
) \
)
#endif
/** The maximum number of bytes per code point. @deprecated ICU 2.4. Renamed to U8_MAX_LENGTH, see utf_old.h. */
#define UTF8_MAX_CHAR_LENGTH 4
/** Average number of code units compared to UTF-16. @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF8_ARRAY_SIZE(size) ((5*(size))/2)
/** @deprecated ICU 2.4. Renamed to U8_GET_UNSAFE, see utf_old.h. */
#define UTF8_GET_CHAR_UNSAFE(s, i, c) { \
int32_t _utf8_get_char_unsafe_index=(int32_t)(i); \
UTF8_SET_CHAR_START_UNSAFE(s, _utf8_get_char_unsafe_index); \
UTF8_NEXT_CHAR_UNSAFE(s, _utf8_get_char_unsafe_index, c); \
}
/** @deprecated ICU 2.4. Use U8_GET instead, see utf_old.h. */
#define UTF8_GET_CHAR_SAFE(s, start, i, length, c, strict) { \
int32_t _utf8_get_char_safe_index=(int32_t)(i); \
UTF8_SET_CHAR_START_SAFE(s, start, _utf8_get_char_safe_index); \
UTF8_NEXT_CHAR_SAFE(s, _utf8_get_char_safe_index, length, c, strict); \
}
/** @deprecated ICU 2.4. Renamed to U8_NEXT_UNSAFE, see utf_old.h. */
#define UTF8_NEXT_CHAR_UNSAFE(s, i, c) { \
(c)=(s)[(i)++]; \
if((uint8_t)((c)-0xc0)<0x35) { \
uint8_t __count=UTF8_COUNT_TRAIL_BYTES(c); \
UTF8_MASK_LEAD_BYTE(c, __count); \
switch(__count) { \
/* each following branch falls through to the next one */ \
case 3: \
(c)=((c)<<6)|((s)[(i)++]&0x3f); \
case 2: \
(c)=((c)<<6)|((s)[(i)++]&0x3f); \
case 1: \
(c)=((c)<<6)|((s)[(i)++]&0x3f); \
/* no other branches to optimize switch() */ \
break; \
} \
} \
}
/** @deprecated ICU 2.4. Renamed to U8_APPEND_UNSAFE, see utf_old.h. */
#define UTF8_APPEND_CHAR_UNSAFE(s, i, c) { \
if((uint32_t)(c)<=0x7f) { \
(s)[(i)++]=(uint8_t)(c); \
} else { \
if((uint32_t)(c)<=0x7ff) { \
(s)[(i)++]=(uint8_t)(((c)>>6)|0xc0); \
} else { \
if((uint32_t)(c)<=0xffff) { \
(s)[(i)++]=(uint8_t)(((c)>>12)|0xe0); \
} else { \
(s)[(i)++]=(uint8_t)(((c)>>18)|0xf0); \
(s)[(i)++]=(uint8_t)((((c)>>12)&0x3f)|0x80); \
} \
(s)[(i)++]=(uint8_t)((((c)>>6)&0x3f)|0x80); \
} \
(s)[(i)++]=(uint8_t)(((c)&0x3f)|0x80); \
} \
}
/** @deprecated ICU 2.4. Renamed to U8_FWD_1_UNSAFE, see utf_old.h. */
#define UTF8_FWD_1_UNSAFE(s, i) { \
(i)+=1+UTF8_COUNT_TRAIL_BYTES((s)[i]); \
}
/** @deprecated ICU 2.4. Renamed to U8_FWD_N_UNSAFE, see utf_old.h. */
#define UTF8_FWD_N_UNSAFE(s, i, n) { \
int32_t __N=(n); \
while(__N>0) { \
UTF8_FWD_1_UNSAFE(s, i); \
--__N; \
} \
}
/** @deprecated ICU 2.4. Renamed to U8_SET_CP_START_UNSAFE, see utf_old.h. */
#define UTF8_SET_CHAR_START_UNSAFE(s, i) { \
while(UTF8_IS_TRAIL((s)[i])) { --(i); } \
}
/** @deprecated ICU 2.4. Use U8_NEXT instead, see utf_old.h. */
#define UTF8_NEXT_CHAR_SAFE(s, i, length, c, strict) { \
(c)=(s)[(i)++]; \
if((c)>=0x80) { \
if(UTF8_IS_LEAD(c)) { \
(c)=utf8_nextCharSafeBody(s, &(i), (int32_t)(length), c, strict); \
} else { \
(c)=UTF8_ERROR_VALUE_1; \
} \
} \
}
/** @deprecated ICU 2.4. Use U8_APPEND instead, see utf_old.h. */
#define UTF8_APPEND_CHAR_SAFE(s, i, length, c) { \
if((uint32_t)(c)<=0x7f) { \
(s)[(i)++]=(uint8_t)(c); \
} else { \
(i)=utf8_appendCharSafeBody(s, (int32_t)(i), (int32_t)(length), c, NULL); \
} \
}
/** @deprecated ICU 2.4. Renamed to U8_FWD_1, see utf_old.h. */
#define UTF8_FWD_1_SAFE(s, i, length) U8_FWD_1(s, i, length)
/** @deprecated ICU 2.4. Renamed to U8_FWD_N, see utf_old.h. */
#define UTF8_FWD_N_SAFE(s, i, length, n) U8_FWD_N(s, i, length, n)
/** @deprecated ICU 2.4. Renamed to U8_SET_CP_START, see utf_old.h. */
#define UTF8_SET_CHAR_START_SAFE(s, start, i) U8_SET_CP_START(s, start, i)
/** @deprecated ICU 2.4. Renamed to U8_PREV_UNSAFE, see utf_old.h. */
#define UTF8_PREV_CHAR_UNSAFE(s, i, c) { \
(c)=(s)[--(i)]; \
if(UTF8_IS_TRAIL(c)) { \
uint8_t __b, __count=1, __shift=6; \
\
/* c is a trail byte */ \
(c)&=0x3f; \
for(;;) { \
__b=(s)[--(i)]; \
if(__b>=0xc0) { \
UTF8_MASK_LEAD_BYTE(__b, __count); \
(c)|=(UChar32)__b<<__shift; \
break; \
} else { \
(c)|=(UChar32)(__b&0x3f)<<__shift; \
++__count; \
__shift+=6; \
} \
} \
} \
}
/** @deprecated ICU 2.4. Renamed to U8_BACK_1_UNSAFE, see utf_old.h. */
#define UTF8_BACK_1_UNSAFE(s, i) { \
while(UTF8_IS_TRAIL((s)[--(i)])) {} \
}
/** @deprecated ICU 2.4. Renamed to U8_BACK_N_UNSAFE, see utf_old.h. */
#define UTF8_BACK_N_UNSAFE(s, i, n) { \
int32_t __N=(n); \
while(__N>0) { \
UTF8_BACK_1_UNSAFE(s, i); \
--__N; \
} \
}
/** @deprecated ICU 2.4. Renamed to U8_SET_CP_LIMIT_UNSAFE, see utf_old.h. */
#define UTF8_SET_CHAR_LIMIT_UNSAFE(s, i) { \
UTF8_BACK_1_UNSAFE(s, i); \
UTF8_FWD_1_UNSAFE(s, i); \
}
/** @deprecated ICU 2.4. Use U8_PREV instead, see utf_old.h. */
#define UTF8_PREV_CHAR_SAFE(s, start, i, c, strict) { \
(c)=(s)[--(i)]; \
if((c)>=0x80) { \
if((c)<=0xbf) { \
(c)=utf8_prevCharSafeBody(s, start, &(i), c, strict); \
} else { \
(c)=UTF8_ERROR_VALUE_1; \
} \
} \
}
/** @deprecated ICU 2.4. Renamed to U8_BACK_1, see utf_old.h. */
#define UTF8_BACK_1_SAFE(s, start, i) U8_BACK_1(s, start, i)
/** @deprecated ICU 2.4. Renamed to U8_BACK_N, see utf_old.h. */
#define UTF8_BACK_N_SAFE(s, start, i, n) U8_BACK_N(s, start, i, n)
/** @deprecated ICU 2.4. Renamed to U8_SET_CP_LIMIT, see utf_old.h. */
#define UTF8_SET_CHAR_LIMIT_SAFE(s, start, i, length) U8_SET_CP_LIMIT(s, start, i, length)
/* Formerly utf16.h --------------------------------------------------------- */
/** Is uchar a first/lead surrogate? @deprecated ICU 2.4. Renamed to U_IS_LEAD and U16_IS_LEAD, see utf_old.h. */
#define UTF_IS_FIRST_SURROGATE(uchar) (((uchar)&0xfffffc00)==0xd800)
/** Is uchar a second/trail surrogate? @deprecated ICU 2.4. Renamed to U_IS_TRAIL and U16_IS_TRAIL, see utf_old.h. */
#define UTF_IS_SECOND_SURROGATE(uchar) (((uchar)&0xfffffc00)==0xdc00)
/** Assuming c is a surrogate, is it a first/lead surrogate? @deprecated ICU 2.4. Renamed to U_IS_SURROGATE_LEAD and U16_IS_SURROGATE_LEAD, see utf_old.h. */
#define UTF_IS_SURROGATE_FIRST(c) (((c)&0x400)==0)
/** Helper constant for UTF16_GET_PAIR_VALUE. @deprecated ICU 2.4. Renamed to U16_SURROGATE_OFFSET, see utf_old.h. */
#define UTF_SURROGATE_OFFSET ((0xd800<<10UL)+0xdc00-0x10000)
/** Get the UTF-32 value from the surrogate code units. @deprecated ICU 2.4. Renamed to U16_GET_SUPPLEMENTARY, see utf_old.h. */
#define UTF16_GET_PAIR_VALUE(first, second) \
(((first)<<10UL)+(second)-UTF_SURROGATE_OFFSET)
/** @deprecated ICU 2.4. Renamed to U16_LEAD, see utf_old.h. */
#define UTF_FIRST_SURROGATE(supplementary) (UChar)(((supplementary)>>10)+0xd7c0)
/** @deprecated ICU 2.4. Renamed to U16_TRAIL, see utf_old.h. */
#define UTF_SECOND_SURROGATE(supplementary) (UChar)(((supplementary)&0x3ff)|0xdc00)
/** @deprecated ICU 2.4. Renamed to U16_LEAD, see utf_old.h. */
#define UTF16_LEAD(supplementary) UTF_FIRST_SURROGATE(supplementary)
/** @deprecated ICU 2.4. Renamed to U16_TRAIL, see utf_old.h. */
#define UTF16_TRAIL(supplementary) UTF_SECOND_SURROGATE(supplementary)
/** @deprecated ICU 2.4. Renamed to U16_IS_SINGLE, see utf_old.h. */
#define UTF16_IS_SINGLE(uchar) !UTF_IS_SURROGATE(uchar)
/** @deprecated ICU 2.4. Renamed to U16_IS_LEAD, see utf_old.h. */
#define UTF16_IS_LEAD(uchar) UTF_IS_FIRST_SURROGATE(uchar)
/** @deprecated ICU 2.4. Renamed to U16_IS_TRAIL, see utf_old.h. */
#define UTF16_IS_TRAIL(uchar) UTF_IS_SECOND_SURROGATE(uchar)
/** Does this scalar Unicode value need multiple code units for storage? @deprecated ICU 2.4. Use U16_LENGTH or test ((uint32_t)(c)>0xffff) instead, see utf_old.h. */
#define UTF16_NEED_MULTIPLE_UCHAR(c) ((uint32_t)(c)>0xffff)
/** @deprecated ICU 2.4. Renamed to U16_LENGTH, see utf_old.h. */
#define UTF16_CHAR_LENGTH(c) ((uint32_t)(c)<=0xffff ? 1 : 2)
/** @deprecated ICU 2.4. Renamed to U16_MAX_LENGTH, see utf_old.h. */
#define UTF16_MAX_CHAR_LENGTH 2
/** Average number of code units compared to UTF-16. @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF16_ARRAY_SIZE(size) (size)
/**
* Get a single code point from an offset that points to any
* of the code units that belong to that code point.
* Assume 0<=i<length.
*
* This could be used for iteration together with
* UTF16_CHAR_LENGTH() and UTF_IS_ERROR(),
* but the use of UTF16_NEXT_CHAR[_UNSAFE]() and
* UTF16_PREV_CHAR[_UNSAFE]() is more efficient for that.
* @deprecated ICU 2.4. Renamed to U16_GET_UNSAFE, see utf_old.h.
*/
#define UTF16_GET_CHAR_UNSAFE(s, i, c) { \
(c)=(s)[i]; \
if(UTF_IS_SURROGATE(c)) { \
if(UTF_IS_SURROGATE_FIRST(c)) { \
(c)=UTF16_GET_PAIR_VALUE((c), (s)[(i)+1]); \
} else { \
(c)=UTF16_GET_PAIR_VALUE((s)[(i)-1], (c)); \
} \
} \
}
/** @deprecated ICU 2.4. Use U16_GET instead, see utf_old.h. */
#define UTF16_GET_CHAR_SAFE(s, start, i, length, c, strict) { \
(c)=(s)[i]; \
if(UTF_IS_SURROGATE(c)) { \
uint16_t __c2; \
if(UTF_IS_SURROGATE_FIRST(c)) { \
if((i)+1<(length) && UTF_IS_SECOND_SURROGATE(__c2=(s)[(i)+1])) { \
(c)=UTF16_GET_PAIR_VALUE((c), __c2); \
/* strict: ((c)&0xfffe)==0xfffe is caught by UTF_IS_ERROR() and UTF_IS_UNICODE_CHAR() */ \
} else if(strict) {\
/* unmatched first surrogate */ \
(c)=UTF_ERROR_VALUE; \
} \
} else { \
if((i)-1>=(start) && UTF_IS_FIRST_SURROGATE(__c2=(s)[(i)-1])) { \
(c)=UTF16_GET_PAIR_VALUE(__c2, (c)); \
/* strict: ((c)&0xfffe)==0xfffe is caught by UTF_IS_ERROR() and UTF_IS_UNICODE_CHAR() */ \
} else if(strict) {\
/* unmatched second surrogate */ \
(c)=UTF_ERROR_VALUE; \
} \
} \
} else if((strict) && !UTF_IS_UNICODE_CHAR(c)) { \
(c)=UTF_ERROR_VALUE; \
} \
}
/** @deprecated ICU 2.4. Renamed to U16_NEXT_UNSAFE, see utf_old.h. */
#define UTF16_NEXT_CHAR_UNSAFE(s, i, c) { \
(c)=(s)[(i)++]; \
if(UTF_IS_FIRST_SURROGATE(c)) { \
(c)=UTF16_GET_PAIR_VALUE((c), (s)[(i)++]); \
} \
}
/** @deprecated ICU 2.4. Renamed to U16_APPEND_UNSAFE, see utf_old.h. */
#define UTF16_APPEND_CHAR_UNSAFE(s, i, c) { \
if((uint32_t)(c)<=0xffff) { \
(s)[(i)++]=(uint16_t)(c); \
} else { \
(s)[(i)++]=(uint16_t)(((c)>>10)+0xd7c0); \
(s)[(i)++]=(uint16_t)(((c)&0x3ff)|0xdc00); \
} \
}
/** @deprecated ICU 2.4. Renamed to U16_FWD_1_UNSAFE, see utf_old.h. */
#define UTF16_FWD_1_UNSAFE(s, i) { \
if(UTF_IS_FIRST_SURROGATE((s)[(i)++])) { \
++(i); \
} \
}
/** @deprecated ICU 2.4. Renamed to U16_FWD_N_UNSAFE, see utf_old.h. */
#define UTF16_FWD_N_UNSAFE(s, i, n) { \
int32_t __N=(n); \
while(__N>0) { \
UTF16_FWD_1_UNSAFE(s, i); \
--__N; \
} \
}
/** @deprecated ICU 2.4. Renamed to U16_SET_CP_START_UNSAFE, see utf_old.h. */
#define UTF16_SET_CHAR_START_UNSAFE(s, i) { \
if(UTF_IS_SECOND_SURROGATE((s)[i])) { \
--(i); \
} \
}
/** @deprecated ICU 2.4. Use U16_NEXT instead, see utf_old.h. */
#define UTF16_NEXT_CHAR_SAFE(s, i, length, c, strict) { \
(c)=(s)[(i)++]; \
if(UTF_IS_FIRST_SURROGATE(c)) { \
uint16_t __c2; \
if((i)<(length) && UTF_IS_SECOND_SURROGATE(__c2=(s)[(i)])) { \
++(i); \
(c)=UTF16_GET_PAIR_VALUE((c), __c2); \
/* strict: ((c)&0xfffe)==0xfffe is caught by UTF_IS_ERROR() and UTF_IS_UNICODE_CHAR() */ \
} else if(strict) {\
/* unmatched first surrogate */ \
(c)=UTF_ERROR_VALUE; \
} \
} else if((strict) && !UTF_IS_UNICODE_CHAR(c)) { \
/* unmatched second surrogate or other non-character */ \
(c)=UTF_ERROR_VALUE; \
} \
}
/** @deprecated ICU 2.4. Use U16_APPEND instead, see utf_old.h. */
#define UTF16_APPEND_CHAR_SAFE(s, i, length, c) { \
if((uint32_t)(c)<=0xffff) { \
(s)[(i)++]=(uint16_t)(c); \
} else if((uint32_t)(c)<=0x10ffff) { \
if((i)+1<(length)) { \
(s)[(i)++]=(uint16_t)(((c)>>10)+0xd7c0); \
(s)[(i)++]=(uint16_t)(((c)&0x3ff)|0xdc00); \
} else /* not enough space */ { \
(s)[(i)++]=UTF_ERROR_VALUE; \
} \
} else /* c>0x10ffff, write error value */ { \
(s)[(i)++]=UTF_ERROR_VALUE; \
} \
}
/** @deprecated ICU 2.4. Renamed to U16_FWD_1, see utf_old.h. */
#define UTF16_FWD_1_SAFE(s, i, length) U16_FWD_1(s, i, length)
/** @deprecated ICU 2.4. Renamed to U16_FWD_N, see utf_old.h. */
#define UTF16_FWD_N_SAFE(s, i, length, n) U16_FWD_N(s, i, length, n)
/** @deprecated ICU 2.4. Renamed to U16_SET_CP_START, see utf_old.h. */
#define UTF16_SET_CHAR_START_SAFE(s, start, i) U16_SET_CP_START(s, start, i)
/** @deprecated ICU 2.4. Renamed to U16_PREV_UNSAFE, see utf_old.h. */
#define UTF16_PREV_CHAR_UNSAFE(s, i, c) { \
(c)=(s)[--(i)]; \
if(UTF_IS_SECOND_SURROGATE(c)) { \
(c)=UTF16_GET_PAIR_VALUE((s)[--(i)], (c)); \
} \
}
/** @deprecated ICU 2.4. Renamed to U16_BACK_1_UNSAFE, see utf_old.h. */
#define UTF16_BACK_1_UNSAFE(s, i) { \
if(UTF_IS_SECOND_SURROGATE((s)[--(i)])) { \
--(i); \
} \
}
/** @deprecated ICU 2.4. Renamed to U16_BACK_N_UNSAFE, see utf_old.h. */
#define UTF16_BACK_N_UNSAFE(s, i, n) { \
int32_t __N=(n); \
while(__N>0) { \
UTF16_BACK_1_UNSAFE(s, i); \
--__N; \
} \
}
/** @deprecated ICU 2.4. Renamed to U16_SET_CP_LIMIT_UNSAFE, see utf_old.h. */
#define UTF16_SET_CHAR_LIMIT_UNSAFE(s, i) { \
if(UTF_IS_FIRST_SURROGATE((s)[(i)-1])) { \
++(i); \
} \
}
/** @deprecated ICU 2.4. Use U16_PREV instead, see utf_old.h. */
#define UTF16_PREV_CHAR_SAFE(s, start, i, c, strict) { \
(c)=(s)[--(i)]; \
if(UTF_IS_SECOND_SURROGATE(c)) { \
uint16_t __c2; \
if((i)>(start) && UTF_IS_FIRST_SURROGATE(__c2=(s)[(i)-1])) { \
--(i); \
(c)=UTF16_GET_PAIR_VALUE(__c2, (c)); \
/* strict: ((c)&0xfffe)==0xfffe is caught by UTF_IS_ERROR() and UTF_IS_UNICODE_CHAR() */ \
} else if(strict) {\
/* unmatched second surrogate */ \
(c)=UTF_ERROR_VALUE; \
} \
} else if((strict) && !UTF_IS_UNICODE_CHAR(c)) { \
/* unmatched first surrogate or other non-character */ \
(c)=UTF_ERROR_VALUE; \
} \
}
/** @deprecated ICU 2.4. Renamed to U16_BACK_1, see utf_old.h. */
#define UTF16_BACK_1_SAFE(s, start, i) U16_BACK_1(s, start, i)
/** @deprecated ICU 2.4. Renamed to U16_BACK_N, see utf_old.h. */
#define UTF16_BACK_N_SAFE(s, start, i, n) U16_BACK_N(s, start, i, n)
/** @deprecated ICU 2.4. Renamed to U16_SET_CP_LIMIT, see utf_old.h. */
#define UTF16_SET_CHAR_LIMIT_SAFE(s, start, i, length) U16_SET_CP_LIMIT(s, start, i, length)
/* Formerly utf32.h --------------------------------------------------------- */
/*
* Old documentation:
*
* This file defines macros to deal with UTF-32 code units and code points.
* Signatures and semantics are the same as for the similarly named macros
* in utf16.h.
* utf32.h is included by utf.h after unicode/umachine.h</p>
* and some common definitions.
* <p><b>Usage:</b> ICU coding guidelines for if() statements should be followed when using these macros.
* Compound statements (curly braces {}) must be used for if-else-while...
* bodies and all macro statements should be terminated with semicolon.</p>
*/
/* internal definitions ----------------------------------------------------- */
/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_IS_SAFE(c, strict) \
(!(strict) ? \
(uint32_t)(c)<=0x10ffff : \
UTF_IS_UNICODE_CHAR(c))
/*
* For the semantics of all of these macros, see utf16.h.
* The UTF-32 versions are trivial because any code point is
* encoded using exactly one code unit.
*/
/* single-code point definitions -------------------------------------------- */
/* classes of code unit values */
/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_IS_SINGLE(uchar) 1
/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_IS_LEAD(uchar) 0
/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_IS_TRAIL(uchar) 0
/* number of code units per code point */
/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_NEED_MULTIPLE_UCHAR(c) 0
/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_CHAR_LENGTH(c) 1
/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_MAX_CHAR_LENGTH 1
/* average number of code units compared to UTF-16 */
/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_ARRAY_SIZE(size) (size)
/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_GET_CHAR_UNSAFE(s, i, c) { \
(c)=(s)[i]; \
}
/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_GET_CHAR_SAFE(s, start, i, length, c, strict) { \
(c)=(s)[i]; \
if(!UTF32_IS_SAFE(c, strict)) { \
(c)=UTF_ERROR_VALUE; \
} \
}
/* definitions with forward iteration --------------------------------------- */
/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_NEXT_CHAR_UNSAFE(s, i, c) { \
(c)=(s)[(i)++]; \
}
/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_APPEND_CHAR_UNSAFE(s, i, c) { \
(s)[(i)++]=(c); \
}
/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_FWD_1_UNSAFE(s, i) { \
++(i); \
}
/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_FWD_N_UNSAFE(s, i, n) { \
(i)+=(n); \
}
/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_SET_CHAR_START_UNSAFE(s, i) { \
}
/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_NEXT_CHAR_SAFE(s, i, length, c, strict) { \
(c)=(s)[(i)++]; \
if(!UTF32_IS_SAFE(c, strict)) { \
(c)=UTF_ERROR_VALUE; \
} \
}
/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_APPEND_CHAR_SAFE(s, i, length, c) { \
if((uint32_t)(c)<=0x10ffff) { \
(s)[(i)++]=(c); \
} else /* c>0x10ffff, write 0xfffd */ { \
(s)[(i)++]=0xfffd; \
} \
}
/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_FWD_1_SAFE(s, i, length) { \
++(i); \
}
/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_FWD_N_SAFE(s, i, length, n) { \
if(((i)+=(n))>(length)) { \
(i)=(length); \
} \
}
/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_SET_CHAR_START_SAFE(s, start, i) { \
}
/* definitions with backward iteration -------------------------------------- */
/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_PREV_CHAR_UNSAFE(s, i, c) { \
(c)=(s)[--(i)]; \
}
/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_BACK_1_UNSAFE(s, i) { \
--(i); \
}
/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_BACK_N_UNSAFE(s, i, n) { \
(i)-=(n); \
}
/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_SET_CHAR_LIMIT_UNSAFE(s, i) { \
}
/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_PREV_CHAR_SAFE(s, start, i, c, strict) { \
(c)=(s)[--(i)]; \
if(!UTF32_IS_SAFE(c, strict)) { \
(c)=UTF_ERROR_VALUE; \
} \
}
/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_BACK_1_SAFE(s, start, i) { \
--(i); \
}
/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_BACK_N_SAFE(s, start, i, n) { \
(i)-=(n); \
if((i)<(start)) { \
(i)=(start); \
} \
}
/** @deprecated ICU 2.4. Obsolete, see utf_old.h. */
#define UTF32_SET_CHAR_LIMIT_SAFE(s, i, length) { \
}
/* Formerly utf.h, part 2 --------------------------------------------------- */
/**
* Estimate the number of code units for a string based on the number of UTF-16 code units.
*
* @deprecated ICU 2.4. Obsolete, see utf_old.h.
*/
#define UTF_ARRAY_SIZE(size) UTF16_ARRAY_SIZE(size)
/** @deprecated ICU 2.4. Renamed to U16_GET_UNSAFE, see utf_old.h. */
#define UTF_GET_CHAR_UNSAFE(s, i, c) UTF16_GET_CHAR_UNSAFE(s, i, c)
/** @deprecated ICU 2.4. Use U16_GET instead, see utf_old.h. */
#define UTF_GET_CHAR_SAFE(s, start, i, length, c, strict) UTF16_GET_CHAR_SAFE(s, start, i, length, c, strict)
/** @deprecated ICU 2.4. Renamed to U16_NEXT_UNSAFE, see utf_old.h. */
#define UTF_NEXT_CHAR_UNSAFE(s, i, c) UTF16_NEXT_CHAR_UNSAFE(s, i, c)
/** @deprecated ICU 2.4. Use U16_NEXT instead, see utf_old.h. */
#define UTF_NEXT_CHAR_SAFE(s, i, length, c, strict) UTF16_NEXT_CHAR_SAFE(s, i, length, c, strict)
/** @deprecated ICU 2.4. Renamed to U16_APPEND_UNSAFE, see utf_old.h. */
#define UTF_APPEND_CHAR_UNSAFE(s, i, c) UTF16_APPEND_CHAR_UNSAFE(s, i, c)
/** @deprecated ICU 2.4. Use U16_APPEND instead, see utf_old.h. */
#define UTF_APPEND_CHAR_SAFE(s, i, length, c) UTF16_APPEND_CHAR_SAFE(s, i, length, c)
/** @deprecated ICU 2.4. Renamed to U16_FWD_1_UNSAFE, see utf_old.h. */
#define UTF_FWD_1_UNSAFE(s, i) UTF16_FWD_1_UNSAFE(s, i)
/** @deprecated ICU 2.4. Renamed to U16_FWD_1, see utf_old.h. */
#define UTF_FWD_1_SAFE(s, i, length) UTF16_FWD_1_SAFE(s, i, length)
/** @deprecated ICU 2.4. Renamed to U16_FWD_N_UNSAFE, see utf_old.h. */
#define UTF_FWD_N_UNSAFE(s, i, n) UTF16_FWD_N_UNSAFE(s, i, n)
/** @deprecated ICU 2.4. Renamed to U16_FWD_N, see utf_old.h. */
#define UTF_FWD_N_SAFE(s, i, length, n) UTF16_FWD_N_SAFE(s, i, length, n)
/** @deprecated ICU 2.4. Renamed to U16_SET_CP_START_UNSAFE, see utf_old.h. */
#define UTF_SET_CHAR_START_UNSAFE(s, i) UTF16_SET_CHAR_START_UNSAFE(s, i)
/** @deprecated ICU 2.4. Renamed to U16_SET_CP_START, see utf_old.h. */
#define UTF_SET_CHAR_START_SAFE(s, start, i) UTF16_SET_CHAR_START_SAFE(s, start, i)
/** @deprecated ICU 2.4. Renamed to U16_PREV_UNSAFE, see utf_old.h. */
#define UTF_PREV_CHAR_UNSAFE(s, i, c) UTF16_PREV_CHAR_UNSAFE(s, i, c)
/** @deprecated ICU 2.4. Use U16_PREV instead, see utf_old.h. */
#define UTF_PREV_CHAR_SAFE(s, start, i, c, strict) UTF16_PREV_CHAR_SAFE(s, start, i, c, strict)
/** @deprecated ICU 2.4. Renamed to U16_BACK_1_UNSAFE, see utf_old.h. */
#define UTF_BACK_1_UNSAFE(s, i) UTF16_BACK_1_UNSAFE(s, i)
/** @deprecated ICU 2.4. Renamed to U16_BACK_1, see utf_old.h. */
#define UTF_BACK_1_SAFE(s, start, i) UTF16_BACK_1_SAFE(s, start, i)
/** @deprecated ICU 2.4. Renamed to U16_BACK_N_UNSAFE, see utf_old.h. */
#define UTF_BACK_N_UNSAFE(s, i, n) UTF16_BACK_N_UNSAFE(s, i, n)
/** @deprecated ICU 2.4. Renamed to U16_BACK_N, see utf_old.h. */
#define UTF_BACK_N_SAFE(s, start, i, n) UTF16_BACK_N_SAFE(s, start, i, n)
/** @deprecated ICU 2.4. Renamed to U16_SET_CP_LIMIT_UNSAFE, see utf_old.h. */
#define UTF_SET_CHAR_LIMIT_UNSAFE(s, i) UTF16_SET_CHAR_LIMIT_UNSAFE(s, i)
/** @deprecated ICU 2.4. Renamed to U16_SET_CP_LIMIT, see utf_old.h. */
#define UTF_SET_CHAR_LIMIT_SAFE(s, start, i, length) UTF16_SET_CHAR_LIMIT_SAFE(s, start, i, length)
/* Define default macros (UTF-16 "safe") ------------------------------------ */
/**
* Does this code unit alone encode a code point (BMP, not a surrogate)?
* Same as UTF16_IS_SINGLE.
* @deprecated ICU 2.4. Renamed to U_IS_SINGLE and U16_IS_SINGLE, see utf_old.h.
*/
#define UTF_IS_SINGLE(uchar) U16_IS_SINGLE(uchar)
/**
* Is this code unit the first one of several (a lead surrogate)?
* Same as UTF16_IS_LEAD.
* @deprecated ICU 2.4. Renamed to U_IS_LEAD and U16_IS_LEAD, see utf_old.h.
*/
#define UTF_IS_LEAD(uchar) U16_IS_LEAD(uchar)
/**
* Is this code unit one of several but not the first one (a trail surrogate)?
* Same as UTF16_IS_TRAIL.
* @deprecated ICU 2.4. Renamed to U_IS_TRAIL and U16_IS_TRAIL, see utf_old.h.
*/
#define UTF_IS_TRAIL(uchar) U16_IS_TRAIL(uchar)
/**
* Does this code point require multiple code units (is it a supplementary code point)?
* Same as UTF16_NEED_MULTIPLE_UCHAR.
* @deprecated ICU 2.4. Use U16_LENGTH or test ((uint32_t)(c)>0xffff) instead.
*/
#define UTF_NEED_MULTIPLE_UCHAR(c) UTF16_NEED_MULTIPLE_UCHAR(c)
/**
* How many code units are used to encode this code point (1 or 2)?
* Same as UTF16_CHAR_LENGTH.
* @deprecated ICU 2.4. Renamed to U16_LENGTH, see utf_old.h.
*/
#define UTF_CHAR_LENGTH(c) U16_LENGTH(c)
/**
* How many code units are used at most for any Unicode code point (2)?
* Same as UTF16_MAX_CHAR_LENGTH.
* @deprecated ICU 2.4. Renamed to U16_MAX_LENGTH, see utf_old.h.
*/
#define UTF_MAX_CHAR_LENGTH U16_MAX_LENGTH
/**
* Set c to the code point that contains the code unit i.
* i could point to the lead or the trail surrogate for the code point.
* i is not modified.
* Same as UTF16_GET_CHAR.
* \pre 0<=i<length
*
* @deprecated ICU 2.4. Renamed to U16_GET, see utf_old.h.
*/
#define UTF_GET_CHAR(s, start, i, length, c) U16_GET(s, start, i, length, c)
/**
* Set c to the code point that starts at code unit i
* and advance i to beyond the code units of this code point (post-increment).
* i must point to the first code unit of a code point.
* Otherwise c is set to the trail unit (surrogate) itself.
* Same as UTF16_NEXT_CHAR.
* \pre 0<=i<length
* \post 0<i<=length
*
* @deprecated ICU 2.4. Renamed to U16_NEXT, see utf_old.h.
*/
#define UTF_NEXT_CHAR(s, i, length, c) U16_NEXT(s, i, length, c)
/**
* Append the code units of code point c to the string at index i
* and advance i to beyond the new code units (post-increment).
* The code units beginning at index i will be overwritten.
* Same as UTF16_APPEND_CHAR.
* \pre 0<=c<=0x10ffff
* \pre 0<=i<length
* \post 0<i<=length
*
* @deprecated ICU 2.4. Use U16_APPEND instead, see utf_old.h.
*/
#define UTF_APPEND_CHAR(s, i, length, c) UTF16_APPEND_CHAR_SAFE(s, i, length, c)
/**
* Advance i to beyond the code units of the code point that begins at i.
* I.e., advance i by one code point.
* Same as UTF16_FWD_1.
* \pre 0<=i<length
* \post 0<i<=length
*
* @deprecated ICU 2.4. Renamed to U16_FWD_1, see utf_old.h.
*/
#define UTF_FWD_1(s, i, length) U16_FWD_1(s, i, length)
/**
* Advance i to beyond the code units of the n code points where the first one begins at i.
* I.e., advance i by n code points.
* Same as UT16_FWD_N.
* \pre 0<=i<length
* \post 0<i<=length
*
* @deprecated ICU 2.4. Renamed to U16_FWD_N, see utf_old.h.
*/
#define UTF_FWD_N(s, i, length, n) U16_FWD_N(s, i, length, n)
/**
* Take the random-access index i and adjust it so that it points to the beginning
* of a code point.
* The input index points to any code unit of a code point and is moved to point to
* the first code unit of the same code point. i is never incremented.
* In other words, if i points to a trail surrogate that is preceded by a matching
* lead surrogate, then i is decremented. Otherwise it is not modified.
* This can be used to start an iteration with UTF_NEXT_CHAR() from a random index.
* Same as UTF16_SET_CHAR_START.
* \pre start<=i<length
* \post start<=i<length
*
* @deprecated ICU 2.4. Renamed to U16_SET_CP_START, see utf_old.h.
*/
#define UTF_SET_CHAR_START(s, start, i) U16_SET_CP_START(s, start, i)
/**
* Set c to the code point that has code units before i
* and move i backward (towards the beginning of the string)
* to the first code unit of this code point (pre-increment).
* i must point to the first code unit after the last unit of a code point (i==length is allowed).
* Same as UTF16_PREV_CHAR.
* \pre start<i<=length
* \post start<=i<length
*
* @deprecated ICU 2.4. Renamed to U16_PREV, see utf_old.h.
*/
#define UTF_PREV_CHAR(s, start, i, c) U16_PREV(s, start, i, c)
/**
* Move i backward (towards the beginning of the string)
* to the first code unit of the code point that has code units before i.
* I.e., move i backward by one code point.
* i must point to the first code unit after the last unit of a code point (i==length is allowed).
* Same as UTF16_BACK_1.
* \pre start<i<=length
* \post start<=i<length
*
* @deprecated ICU 2.4. Renamed to U16_BACK_1, see utf_old.h.
*/
#define UTF_BACK_1(s, start, i) U16_BACK_1(s, start, i)
/**
* Move i backward (towards the beginning of the string)
* to the first code unit of the n code points that have code units before i.
* I.e., move i backward by n code points.
* i must point to the first code unit after the last unit of a code point (i==length is allowed).
* Same as UTF16_BACK_N.
* \pre start<i<=length
* \post start<=i<length
*
* @deprecated ICU 2.4. Renamed to U16_BACK_N, see utf_old.h.
*/
#define UTF_BACK_N(s, start, i, n) U16_BACK_N(s, start, i, n)
/**
* Take the random-access index i and adjust it so that it points beyond
* a code point. The input index points beyond any code unit
* of a code point and is moved to point beyond the last code unit of the same
* code point. i is never decremented.
* In other words, if i points to a trail surrogate that is preceded by a matching
* lead surrogate, then i is incremented. Otherwise it is not modified.
* This can be used to start an iteration with UTF_PREV_CHAR() from a random index.
* Same as UTF16_SET_CHAR_LIMIT.
* \pre start<i<=length
* \post start<i<=length
*
* @deprecated ICU 2.4. Renamed to U16_SET_CP_LIMIT, see utf_old.h.
*/
#define UTF_SET_CHAR_LIMIT(s, start, i, length) U16_SET_CP_LIMIT(s, start, i, length)
#endif /* U_HIDE_DEPRECATED_API */
#endif
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