mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-04 13:23:26 +01:00
1896 lines
51 KiB
C++
Executable File
1896 lines
51 KiB
C++
Executable File
/*
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*
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* Created by jief the 24 Feb 2020.
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* Copyright (c) 2020 Jief
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* All rights reserved.
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*
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*/
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#include "unicode_conversions.h"
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#include <string.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <string.h> // for memcpy
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//#include <uintptr_t.h> // for memcpy
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//#include <sys/_types/_uintptr_t.h>
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#ifndef MIN
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#define MIN(a, b) ((a) < (b) ? (a) : (b))
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#endif
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#if __WCHAR_MAX__ <= 0xFFFFu
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#define wchar_cast char16_t
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#else
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#define wchar_cast char32_t
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#endif
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#ifndef wchar_cast
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#error wchar_cast
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#endif
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//
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//size_t char32_len_from_wchar(const wchar_t* s)
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//{
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//#if __WCHAR_MAX__ <= 0xFFFFu
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// return char32_len((const char16_t*)s);
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//#else
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// return char32_len((const char32_t*)s);
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//#endif
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//}
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//
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//size_t wchar_len(const wchar_t* s)
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//{
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//#if __WCHAR_MAX__ <= 0xFFFFu
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// return char16_len((const char16_t*)s);
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//#else
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// return char32_len((const char32_t*)s);
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//#endif
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//}
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static inline int is_surrogate(char16_t uc) { return (uc - 0xd800u) < 2048u; }
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static inline int is_high_surrogate(char16_t uc) { return (uc & 0xfffffc00) == 0xd800; }
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static inline int is_low_surrogate(char16_t uc) { return (uc & 0xfffffc00) == 0xdc00; }
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static inline char32_t surrogate_to_utf32(char16_t high, char16_t low) {
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return (char32_t)((high << 10) + low - 0x35fdc00); // Safe cast, it fits in 32 bits
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}
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#define halfBase 0x0010000UL
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#define halfMask 0x3FFUL
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#define halfShift 10 /* used for shifting by 10 bits */
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#define UNI_SUR_HIGH_START 0xD800u
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#define UNI_SUR_LOW_START 0xDC00u
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/************************************************************* Utility *********************************************************/
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/*
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* Size of an UTF32 char when represented in UTF8
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* Return value : size
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*/
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size_t utf8_size_of_utf32_char(char32_t c) {
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if ( c == 0 ) return 0;
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else if ( c <= 0x7f ) return 1;
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else if ( c <= 0x7ff ) return 2;
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else if ( c <= 0xFFFF ) return 3;
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else return 4;
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}
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/*
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* Size in utf8 char (bytes) of an utf32 string if it were converted to utf8
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* Return value : size
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*/
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size_t utf8_size_of_utf32_string(const char32_t* s)
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{
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if ( !s ) return 0;
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size_t size = 0;
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while ( *s ) s = utf8_size_of_utf32_char_ptr(s, &size);
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return size;
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}
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/*
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* Increment size and return a pointer to the next char
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* Return value : pointer to the end of string or at the error
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*/
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const char32_t* utf8_size_of_utf32_char_ptr(const char32_t *s, size_t* size)
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{
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if ( *s == 0 ) return s;
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*size += utf8_size_of_utf32_char(*s++);
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return s;
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}
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/*
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* Store an utf32 char in dst, if there is enough room (dst_max_size is >= size of converted utf32 char)
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* If there is enough room, dst_max_size is decrement and dst is increment and returned
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* If there isn't enough room, dst_max_size is set to 0 and dst is returned
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* if utf32_char == 0, it IS sent to dst
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*/
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char* get_utf8_from_char32(char* dst, size_t* dst_max_size, char32_t utf32_char)
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{
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#ifdef JIEF_DEBUG
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char* dst_debug = dst;
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(void)dst_debug;
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#endif
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if ( *dst_max_size <= 0 ) return dst;
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/* assertion: utf32_char is a single UTF-4 value */
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int bits = 0; // just to silence the warning
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if (utf32_char < 0x80) {
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*dst++ = (char)utf32_char;
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*dst_max_size -= 1;
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bits = -6;
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}
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else if (utf32_char < 0x800) {
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if ( *dst_max_size < 2 ) {
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*dst_max_size = 0;
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return dst;
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}
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*dst++ = (char)(((utf32_char >> 6) & 0x1F) | 0xC0);
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*dst_max_size -= 1;
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bits = 0;
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}
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else if (utf32_char < 0x10000) {
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if ( *dst_max_size < 3 ) {
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*dst_max_size = 0;
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return dst;
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}
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*dst++ = (char)(((utf32_char >> 12) & 0x0F) | 0xE0);
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*dst_max_size -= 1;
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bits = 6;
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}
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else {
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if ( *dst_max_size < 4 ) {
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*dst_max_size = 0;
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return dst;
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}
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*dst++ = (char)(((utf32_char >> 18) & 0x07) | 0xF0);
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*dst_max_size -= 1;
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bits = 12;
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}
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for ( ; /* *dst_max_size > 0 && */ bits >= 0 ; bits -= 6 ) { // no need to check dst_max_size, it's made before
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*dst++ = (char)(((utf32_char >> bits) & 0x3F) | 0x80);
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*dst_max_size -= 1;
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}
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return dst;
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}
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/*
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* Store an utf32 char in dst, if there is enough room (dst_max_size is >= size of converted utf32 char)
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* If there is enough room, dst_max_size is decrement and dst is increment and returned
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* If there isn't enough room, dst_max_size is set to 0 and dst is returned
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*/
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char16_t* get_utf16_from_char32(char16_t* dst, size_t* dst_max_size, char32_t utf32_char)
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{
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if ( *dst_max_size <= 0 ) return dst;
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char16_t char16_1, char16_2;
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get_char16_from_char32(utf32_char, &char16_1, &char16_2);
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if ( char16_2 != 0 ) {
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if ( *dst_max_size < 2 ) {
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*dst_max_size = 0;
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}else{
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*dst++ = char16_1;
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*dst++ = char16_2;
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*dst_max_size -= 2;
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}
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}else{
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if ( *dst_max_size < 1 ) {
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*dst_max_size = 0;
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}else{
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*dst++ = char16_1;
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*dst_max_size -= 1;
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}
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}
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return dst;
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}
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/*
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* Store an utf32 char in dst, if there is enough room (dst_max_size is >= size of converted utf32 char)
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* If there is enough room, dst_max_size is decrement and dst is increment and returned
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* If there isn't enough room, dst_max_size is set to 0 and dst is returned
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*/
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char32_t* get_utf32_from_char32(char32_t* dst, size_t* dst_max_size, char32_t utf32_char)
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{
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if ( *dst_max_size <= 0 ) return dst;
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*dst = utf32_char;
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*dst_max_size -= 1;
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return dst + 1;
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}
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/*
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Number Bits for First Last Byte 1 Byte 2 Byte 3 cByte 4
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of bytes code point
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1 7 U+0000 U+007F 0xxxxxxx
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2 11 U+0080 U+07FF 110xxxxx 10xxxxxx
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3 16 U+0800 U+FFFF 1110xxxx 10xxxxxx 10xxxxxx
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4 21 U+10000 U+10FFFF[12] 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
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*/
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/*
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* char32 will be set to 0 at the end of string or at error
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* Return value : pointer to the end of string or at the error
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*/
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const char* get_char32_from_utf8_string(const char* s, char32_t* char32)
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{
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if ( !*s ) {
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*char32 = 0;
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return s;
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}
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char32_t c;
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if (*s & 0x80) {
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if ((*(s+1) & 0xc0) != 0x80) { // 0xc0 = 0b11000000. Equivalent to if ( *(s+1) != 0x10xxxxxx )
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// Finished in the middle of an utf8 multibyte char
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*char32 = 0;
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return s;
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}
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if ((*s & 0xe0) == 0xe0) { // 0xe0 == 0b11100000. Equivalent to if ( *(s) == 0x111xxxxx )
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// Here, it's a 3 or 4 bytes
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// Byte 3 has to be 0x10xxxxxx
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if ((*(s+2) & 0xc0) != 0x80) { // 0xc0 = 0b11000000. Equivalent to if ( *(s+2) != 0x10xxxxxx )
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// Finished in the middle of an utf8 multibyte char
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*char32 = 0;
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return s;
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}
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if ((*s & 0xf0) == 0xf0) { // 0xf0 = 0b1111xxxx. Equivalent to if ( *(s) == 0x1111xxxx )
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// Here, it's a 4 bytes
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// Byte 4 has to be 0x10xxxxxx
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if ((*s & 0xf8) != 0xf0 || (*(s+3) & 0xc0) != 0x80) { // 0xf8 = 0b11111xxx. Equivalent to if ( *(s) != 0x11110xxx || *(s+3) != 0x10xxxxxx )
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// Finished in the middle of an utf8 multibyte char
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*char32 = 0;
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return s;
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}
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/* 4-byte code */
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c = (char32_t)((*s & 0x7) << 18); // & result type is int. We know it fits in 32 bits. Safe to cast to char32_t
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c |= (char32_t)((*(s+1) & 0x3f) << 12);
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c |= (char32_t)((*(s+2) & 0x3f) << 6);
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c |= *(s+3) & 0x3f;
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s += 4;
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} else {
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/* 3-byte code */
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c = (char32_t)((*s & 0xf) << 12);
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c |= (char32_t)((*(s+1) & 0x3f) << 6);
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c |= *(s+2) & 0x3f;
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s += 3;
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}
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} else {
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/* 2-byte code */
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c = (char32_t)((*s & 0x1f) << 6);
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c |= *(s+1) & 0x3f;
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s += 2;
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}
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} else {
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/* 1-byte code */
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c = (unsigned char)(*s); // in case we compiled with signed char
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s += 1;
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}
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*char32 = c;
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return s;
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}
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/************************************************************* utf8 - char32 *********************************************************/
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//const char* utf8_move_forward(const char* s)
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//{
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//}
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/*
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* Size in bytes of an utf32 string if it were converted to utf8
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* Return value : pointer to the end of string or at the error
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*/
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size_t utf32_size_of_utf8_string(const char* s)
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{
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if ( !s ) return 0;
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size_t size = 0;
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char32_t char32;
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s = get_char32_from_utf8_string(s, &char32);
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while ( char32 ) {
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size += 1;
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s = get_char32_from_utf8_string(s, &char32);
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}
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return size;
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}
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/*
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* Size in bytes of an utf32 string of len char if it were converted to utf8
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* Return value : pointer to the end of string or at the error
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*/
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size_t utf8_size_of_utf32_string_len(const char32_t* s, size_t len)
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{
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if ( !s || len <= 0 ) return 0; // <= in case size_t is signed
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size_t size = 0;
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while ( *s && len > 0 ) {
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s = utf8_size_of_utf32_char_ptr(s, &size);
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len --;
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}
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return size;
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}
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size_t utf32_stringnn_from_utf8_string(char32_t* dst, size_t dst_max_size, const char* s)
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{
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if ( dst_max_size <= 0 ) return 0;
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if ( !s ) {
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*dst = 0;
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return 0;
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}
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char32_t* p = dst;
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char32_t* p_max = dst + dst_max_size - 1;
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char32_t char32;
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s = get_char32_from_utf8_string(s, &char32);
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while ( char32 != 0 ) {
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*p++ = char32;
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if ( p > p_max ) break;
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s = get_char32_from_utf8_string(s, &char32);
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}
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return (size_t)(p-dst);
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}
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size_t utf32_string_from_utf8_string(char32_t* dst, size_t dst_max_size, const char* s)
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{
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if ( dst_max_size <= 0 ) return 0;
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size_t size = utf32_stringnn_from_utf8_string(dst, dst_max_size, s);
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if ( size >= dst_max_size ) {
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*(dst + dst_max_size - 1) = 0;
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return dst_max_size-1;
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}else{
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*(dst + size) = 0;
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return size;
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}
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}
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//
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//size_t utf32_string_from_utf8_string(char32_t* dst, size_t dst_max_size, const char* s)
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//{
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// if ( dst_max_size <= 0 ) return 0;
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// if ( !s ) {
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// *dst = 0;
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// return 0;
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// }
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// char32_t* p = dst;
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// char32_t* p_max = dst + dst_max_size - 1;
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//
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// char32_t char32;
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// s = get_char32_from_utf8_string(s, &char32);
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// while ( char32 != 0 && p < p_max ) {
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// *p++ = char32;
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// s = get_char32_from_utf8_string(s, &char32);
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// }
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// *p = 0;
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// return (size_t)(p-dst);
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//}
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size_t utf32_size_of_utf8_string_len(const char* s, size_t len)
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{
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if ( !s || len <= 0 ) return 0; // <= in case size_t is signed
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size_t size = 0;
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char32_t char32;
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s = get_char32_from_utf8_string(s, &char32);
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while ( char32 && len > 0 ) {
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size += 1;
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s = get_char32_from_utf8_string(s, &char32);
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len --;
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}
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return size;
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}
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size_t utf32_string_from_utf8_string_len(char32_t* dst, size_t dst_max_size, const char* s, size_t len)
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{
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if ( dst_max_size <= 0 ) return 0;
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if ( !s || len <= 0 ) {
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*dst = 0;
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return 0;
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}
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char32_t* p = dst;
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char32_t* p_max = dst + dst_max_size - 1;
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char32_t char32;
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s = get_char32_from_utf8_string(s, &char32);
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while ( char32 != 0 && p < p_max && len > 0 ) {
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*p++ = char32;
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s = get_char32_from_utf8_string(s, &char32);
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len--;
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}
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*p = 0;
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return (size_t)(p-dst);
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}
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size_t utf32_string_from_utf8_string_size(char32_t* dst, size_t dst_max_size, const char* s, size_t size)
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{
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if ( dst_max_size == 0 ) return 0;
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if ( !s || size == 0 ) {
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*dst = 0;
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return 0;
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}
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char32_t* p = dst;
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dst_max_size -= 1;
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const char* s_start = s;
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char32_t* p_max = dst + dst_max_size;
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char32_t char32;
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s = get_char32_from_utf8_string(s, &char32);
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while ( char32 && p < p_max && (uintptr_t)(s - s_start) <= size ) {
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*p++ = char32;
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s = get_char32_from_utf8_string(s, &char32);
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}
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*p = 0;
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return (size_t)(p-dst);
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}
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size_t utf8_stringnn_from_utf32_string(char* dst, size_t dst_max_size, const char32_t *s)
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{
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if ( dst_max_size <= 0 ) return 0;
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if ( !s ) {
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return 0;
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}
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char* p = dst;
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while ( *s && dst_max_size > 0 ) {
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p = get_utf8_from_char32(p, &dst_max_size, *s++);
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}
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return (size_t)(p-dst);
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}
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size_t utf8_string_from_utf32_string(char* dst, size_t dst_max_size, const char32_t *s)
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{
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if ( dst_max_size <= 0 ) return 0;
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size_t size = utf8_stringnn_from_utf32_string(dst, dst_max_size, s);
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if ( size >= dst_max_size ) {
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*(dst + dst_max_size - 1) = 0;
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return dst_max_size-1;
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}else{
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*(dst + size) = 0;
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return size;
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}
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}
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//
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//size_t utf8_string_from_utf32_string(char* dst, size_t dst_max_size, const char32_t *s)
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//{
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// if ( dst_max_size <= 0 ) return 0;
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// if ( !s ) {
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// *dst = 0;
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// return 0;
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// }
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// dst_max_size -= 1;
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// char* p = dst;
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// while ( *s && dst_max_size > 0 ) {
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// p = get_utf8_from_char32(p, &dst_max_size, *s++);
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// }
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// *p = 0;
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// return (size_t)(p-dst);
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//}
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size_t utf8_string_from_utf32_string_len(char* dst, size_t dst_max_size, const char32_t *s, size_t len)
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{
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if ( dst_max_size <= 0 ) return 0;
|
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if ( !s || len <= 0 ) {
|
|
*dst = 0;
|
|
return 0;
|
|
}
|
|
dst_max_size -= 1;
|
|
char* p = dst;
|
|
while ( *s && dst_max_size > 0 && len > 0 ) {
|
|
p = get_utf8_from_char32(p, &dst_max_size, *s++);
|
|
len--;
|
|
}
|
|
*p = 0;
|
|
return (size_t)(p-dst);
|
|
}
|
|
|
|
size_t utf8_string_from_utf32_string_size(char* dst, size_t dst_max_size, const char32_t *s, size_t size)
|
|
{
|
|
if ( dst_max_size <= 0 ) return 0;
|
|
if ( !s || size <= 0 ) {
|
|
*dst = 0;
|
|
return 0;
|
|
}
|
|
|
|
dst_max_size -= 1;
|
|
const char32_t* s_start = s;
|
|
char* p = dst;
|
|
|
|
while ( *s && dst_max_size > 0 && (uintptr_t)(s - s_start) < size ) {
|
|
p = get_utf8_from_char32(p, &dst_max_size, *s++);
|
|
}
|
|
*p = 0;
|
|
return (size_t)(p-dst);
|
|
}
|
|
|
|
/*
|
|
* get nth char32 of an utf8 string
|
|
* Return value : pointer to the end of string or at the error
|
|
*/
|
|
char32_t get_char32_from_utf8_string_at_pos(const char* s, size_t pos)
|
|
{
|
|
if ( !s ) return 0;
|
|
char32_t char32;
|
|
s = get_char32_from_utf8_string(s, &char32);
|
|
while ( char32 && pos > 0 ) {
|
|
s = get_char32_from_utf8_string(s, &char32);
|
|
pos--;
|
|
}
|
|
return char32;
|
|
}
|
|
|
|
|
|
/************************************************************* utf8 - char16 *********************************************************/
|
|
|
|
//static size_t utf16_size_of_utf32_char(char32_t c);
|
|
|
|
/*
|
|
* Increment size
|
|
* Return value : pointer to the end of string or at the error
|
|
*/
|
|
const char16_t* utf8_size_of_utf16_char_ptr(const char16_t *s, size_t* size) {
|
|
char32_t c;
|
|
s = get_char32_from_utf16_string(s, &c);
|
|
if ( c == 0 ) return s;
|
|
*size += utf8_size_of_utf32_char(c);
|
|
return s;
|
|
}
|
|
|
|
/*
|
|
* Size in bytes of an utf16 string if it were converted to utf8
|
|
* Return value : pointer to the end of string or at the error
|
|
*/
|
|
size_t utf8_size_of_utf16_string(const char16_t* s)
|
|
{
|
|
if ( !s ) return 0;
|
|
size_t size = 0;
|
|
while ( *s ) s = utf8_size_of_utf16_char_ptr(s, &size);
|
|
return size;
|
|
}
|
|
|
|
/*
|
|
* Size in bytes of an utf16 string of len char if it were converted to utf8
|
|
* Return value : pointer to the end of string or at the error
|
|
*/
|
|
size_t utf8_size_of_utf16_string_len(const char16_t* s, size_t len)
|
|
{
|
|
if ( !s || len <= 0 ) return 0; // <= in case size_t is signed
|
|
size_t size = 0;
|
|
while ( *s && len > 0 ) {
|
|
s = utf8_size_of_utf16_char_ptr(s, &size);
|
|
len --;
|
|
}
|
|
return size;
|
|
}
|
|
|
|
size_t utf16_size_of_utf8_string(const char* s)
|
|
{
|
|
if ( !s ) return 0;
|
|
size_t size = 0;
|
|
|
|
char32_t char32;
|
|
s = get_char32_from_utf8_string(s, &char32);
|
|
while ( char32 ) {
|
|
size += utf16_size_of_utf32_char(char32);
|
|
s = get_char32_from_utf8_string(s, &char32);
|
|
}
|
|
return size;
|
|
}
|
|
|
|
size_t utf16_size_of_utf8_string_len(const char* s, size_t len)
|
|
{
|
|
if ( !s || len <= 0 ) return 0; // <= in case size_t is signed
|
|
size_t size = 0;
|
|
|
|
char32_t char32;
|
|
s = get_char32_from_utf8_string(s, &char32);
|
|
while ( char32 && len > 0 ) {
|
|
size += utf16_size_of_utf32_char(char32);
|
|
len --;
|
|
s = get_char32_from_utf8_string(s, &char32);
|
|
}
|
|
return size;
|
|
}
|
|
|
|
|
|
|
|
size_t utf8_stringnn_from_utf16_string(char* dst, size_t dst_max_size, const char16_t *s)
|
|
{
|
|
if ( dst_max_size <= 0 ) return 0;
|
|
if ( !s ) {
|
|
return 0;
|
|
}
|
|
char* p = dst;
|
|
while ( *s && dst_max_size > 0 ) {
|
|
char32_t utf32_char;
|
|
s = get_char32_from_utf16_string(s, &utf32_char);
|
|
p = get_utf8_from_char32(p, &dst_max_size, utf32_char);
|
|
}
|
|
return (size_t)(p-dst);
|
|
}
|
|
|
|
size_t utf8_string_from_utf16_string(char* dst, size_t dst_max_size, const char16_t *s)
|
|
{
|
|
if ( dst_max_size <= 0 ) return 0;
|
|
size_t size = utf8_stringnn_from_utf16_string(dst, dst_max_size, s);
|
|
if ( size >= dst_max_size ) {
|
|
*(dst + dst_max_size - 1) = 0;
|
|
return dst_max_size-1;
|
|
}else{
|
|
*(dst + size) = 0;
|
|
return size;
|
|
}
|
|
}
|
|
|
|
//size_t utf8_string_from_utf16_string(char* dst, size_t dst_max_size, const char16_t *s)
|
|
//{
|
|
// if ( dst_max_size <= 0 ) return 0;
|
|
// if ( !s ) {
|
|
// *dst = 0;
|
|
// return 0;
|
|
// }
|
|
// char* p = dst;
|
|
// dst_max_size -= 1;
|
|
// while ( *s && dst_max_size > 0 ) {
|
|
// char32_t utf32_char;
|
|
// s = get_char32_from_utf16_string(s, &utf32_char);
|
|
// p = get_utf8_from_char32(p, &dst_max_size, utf32_char);
|
|
// }
|
|
// *p = 0;
|
|
// return (size_t)(p-dst);
|
|
//}
|
|
|
|
size_t utf8_string_from_utf16_string_len(char* dst, size_t dst_max_size, const char16_t *s, size_t len)
|
|
{
|
|
if ( dst_max_size == 0 ) return 0;
|
|
if ( dst_max_size == 1 || !s || len <= 0 ) {
|
|
*dst = 0;
|
|
return 0;
|
|
}
|
|
char* p = dst;
|
|
dst_max_size -= 1;
|
|
char32_t utf32_char;
|
|
while ( *s && dst_max_size > 0 && len > 0 ) {
|
|
s = get_char32_from_utf16_string(s, &utf32_char);
|
|
p = get_utf8_from_char32(p, &dst_max_size, utf32_char);
|
|
len--;
|
|
}
|
|
*p = 0;
|
|
return (size_t)(p-dst);
|
|
}
|
|
|
|
size_t utf8_string_from_utf16_string_size(char* dst, size_t dst_max_size, const char16_t *s, size_t size)
|
|
{
|
|
if ( dst_max_size == 0 ) return 0;
|
|
if ( dst_max_size == 1 || !s || size <= 0 ) {
|
|
*dst = 0;
|
|
return 0;
|
|
}
|
|
char* p = dst;
|
|
dst_max_size -= 1;
|
|
const char16_t* s_start = s;
|
|
char32_t char32;
|
|
s = get_char32_from_utf16_string(s, &char32);
|
|
while ( char32 && dst_max_size > 0 && (uintptr_t)(s - s_start) <= size ) {
|
|
p = get_utf8_from_char32(p, &dst_max_size, char32);
|
|
s = get_char32_from_utf16_string(s, &char32);
|
|
}
|
|
*p = 0;
|
|
return (size_t)(p-dst);
|
|
}
|
|
|
|
|
|
size_t utf16_stringnn_from_utf8_string(char16_t* dst, size_t dst_max_size, const char* s)
|
|
{
|
|
if ( dst_max_size <= 0 ) return 0;
|
|
if ( !s ) {
|
|
return 0;
|
|
}
|
|
|
|
// size_t dst_len = 0;
|
|
char16_t* p = dst;
|
|
// char16_t* p_max = dst + dst_max_size;
|
|
|
|
char32_t char32;
|
|
s = get_char32_from_utf8_string(s, &char32);
|
|
while ( char32 ) {
|
|
p = get_utf16_from_char32(p, &dst_max_size, char32);
|
|
if ( dst_max_size == 0 ) break;
|
|
s = get_char32_from_utf8_string(s, &char32);
|
|
}
|
|
return (size_t)(p-dst);
|
|
}
|
|
|
|
size_t utf16_string_from_utf8_string(char16_t* dst, size_t dst_max_size, const char* s)
|
|
{
|
|
if ( dst_max_size <= 0 ) return 0;
|
|
size_t size = utf16_stringnn_from_utf8_string(dst, dst_max_size, s);
|
|
if ( size >= dst_max_size ) {
|
|
*(dst + dst_max_size - 1) = 0;
|
|
return dst_max_size-1;
|
|
}else{
|
|
*(dst + size) = 0;
|
|
return size;
|
|
}
|
|
}
|
|
|
|
//size_t utf16_string_from_utf8_string(char16_t* dst, size_t dst_max_size, const char* s)
|
|
//{
|
|
// if ( dst_max_size <= 0 ) return 0;
|
|
// if ( !s ) {
|
|
// *dst = 0;
|
|
// return 0;
|
|
// }
|
|
// dst_max_size -= 1;
|
|
//
|
|
//// size_t dst_len = 0;
|
|
// char16_t* p = dst;
|
|
//// char16_t* p_max = dst + dst_max_size;
|
|
//
|
|
// char32_t char32;
|
|
// s = get_char32_from_utf8_string(s, &char32);
|
|
// while ( char32 && dst_max_size > 0 ) {
|
|
// p = get_utf16_from_char32(p, &dst_max_size, char32);
|
|
// s = get_char32_from_utf8_string(s, &char32);
|
|
// }
|
|
// *p = 0;
|
|
// return (size_t)(p-dst);
|
|
//}
|
|
|
|
size_t utf16_string_from_utf8_string_len(char16_t* dst, size_t dst_max_size, const char* s, size_t len)
|
|
{
|
|
if ( dst_max_size <= 0 ) return 0;
|
|
if ( !s || len <= 0 ) {
|
|
*dst = 0;
|
|
return 0;
|
|
}
|
|
dst_max_size -= 1;
|
|
|
|
// size_t dst_len = 0;
|
|
char16_t* p = dst;
|
|
// char16_t* p_max = dst + dst_max_size;
|
|
|
|
char32_t char32;
|
|
s = get_char32_from_utf8_string(s, &char32);
|
|
while ( char32 && dst_max_size > 0 && len > 0 ) {
|
|
p = get_utf16_from_char32(p, &dst_max_size, char32);
|
|
s = get_char32_from_utf8_string(s, &char32);
|
|
len--;
|
|
}
|
|
*p = 0;
|
|
return (size_t)(p-dst);
|
|
}
|
|
|
|
size_t utf16_string_from_utf8_string_size(char16_t* dst, size_t dst_max_size, const char* s, size_t size)
|
|
{
|
|
if ( dst_max_size == 0 ) return 0;
|
|
if ( dst_max_size == 1 || !s || size <= 0 ) {
|
|
*dst = 0;
|
|
return 0;
|
|
}
|
|
char16_t* p = dst;
|
|
dst_max_size -= 1;
|
|
const char* s_start = s;
|
|
char32_t char32;
|
|
s = get_char32_from_utf8_string(s, &char32);
|
|
while ( char32 && dst_max_size > 0 && (uintptr_t)(s - s_start) <= size ) {
|
|
p = get_utf16_from_char32(p, &dst_max_size, char32);
|
|
s = get_char32_from_utf8_string(s, &char32);
|
|
}
|
|
*p = 0;
|
|
return (size_t)(p-dst);
|
|
}
|
|
|
|
|
|
/************************************************************* utf16 - utf32 *********************************************************/
|
|
|
|
size_t utf16_size_of_utf32_char(char32_t c)
|
|
{
|
|
if ( c <= 0xFFFF) return 1;
|
|
else return 2;
|
|
}
|
|
|
|
void get_char16_from_char32(char32_t char32, char16_t* char16_1, char16_t* char16_2)
|
|
{
|
|
if ( char32 <= 0xFFFF) {
|
|
*char16_1 = (char16_t)char32;
|
|
*char16_2 = 0;
|
|
} else {
|
|
char32 -= halfBase;
|
|
*char16_1 = (char16_t)((char32 >> halfShift) + UNI_SUR_HIGH_START);
|
|
*char16_2 = (char16_t)((char32 & halfMask) + UNI_SUR_LOW_START);
|
|
}
|
|
}
|
|
|
|
char32_t get_char32_from_char16(char16_t char16_1, char16_t char16_2)
|
|
{
|
|
if (!is_surrogate(char16_1)) {
|
|
return char16_1;
|
|
} else {
|
|
if (is_high_surrogate(char16_1) && is_low_surrogate(char16_2)) {
|
|
return surrogate_to_utf32(char16_1, char16_2);
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* char32 will be set to 0 at the end of string or at error
|
|
* Return value : pointer to the end of string or at the error
|
|
*/
|
|
const char16_t* get_char32_from_utf16_string(const char16_t* s, char32_t* char32)
|
|
{
|
|
const char16_t char16_1 = *s;
|
|
if ( char16_1 == 0 ) {
|
|
*char32 = 0;
|
|
return s;
|
|
}
|
|
s++;
|
|
if (!is_surrogate(char16_1)) {
|
|
*char32 = char16_1;
|
|
return s;
|
|
} else {
|
|
if (is_high_surrogate(char16_1) && is_low_surrogate(*s)) {
|
|
*char32 = surrogate_to_utf32(char16_1, *s++);
|
|
return s;
|
|
} else {
|
|
*char32 = 0;
|
|
if ( !is_high_surrogate(char16_1) ) return s-1;
|
|
return s;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
size_t utf16_size_of_utf32_string(const char32_t *s)
|
|
{
|
|
if ( !s ) return 0;
|
|
size_t size = 0;
|
|
while ( *s ) size += utf16_size_of_utf32_char(*s++);
|
|
return size;
|
|
}
|
|
|
|
size_t utf16_size_of_utf32_string_len(const char32_t *s, size_t len)
|
|
{
|
|
if ( !s ) return 0;
|
|
size_t size = 0;
|
|
while ( *s && len > 0 ) {
|
|
size += utf16_size_of_utf32_char(*s++);
|
|
len--;
|
|
}
|
|
return size;
|
|
}
|
|
|
|
size_t utf32_size_of_utf16_string(const char16_t *s)
|
|
{
|
|
if ( !s ) return 0;
|
|
size_t size = 0;
|
|
char32_t char32;
|
|
s = get_char32_from_utf16_string(s, &char32);
|
|
while ( char32 ) {
|
|
size += 1;
|
|
s = get_char32_from_utf16_string(s, &char32);
|
|
}
|
|
return size;
|
|
}
|
|
|
|
size_t utf32_size_of_utf16_string_len(const char16_t *s, size_t len)
|
|
{
|
|
if ( !s || len <= 0 ) return 0; // <= in case size_t is signed
|
|
size_t size = 0;
|
|
char32_t char32;
|
|
s = get_char32_from_utf16_string(s, &char32);
|
|
while ( char32 && len > 0 ) {
|
|
size += 1;
|
|
s = get_char32_from_utf16_string(s, &char32);
|
|
len --;
|
|
}
|
|
return size;
|
|
}
|
|
|
|
|
|
size_t utf16_stringnn_from_utf32_string(char16_t* dst, size_t dst_max_size, const char32_t *s)
|
|
{
|
|
if ( dst_max_size <= 0 ) return 0;
|
|
if ( !s ) {
|
|
return 0;
|
|
}
|
|
char16_t* p = dst;
|
|
// char16_t* p_max = dst + dst_max_size - 1;
|
|
|
|
while ( *s && dst_max_size > 0 ) {
|
|
p = get_utf16_from_char32(p, &dst_max_size, *s++);
|
|
}
|
|
return (size_t)(p-dst);
|
|
}
|
|
|
|
size_t utf16_string_from_utf32_string(char16_t* dst, size_t dst_max_size, const char32_t *s)
|
|
{
|
|
if ( dst_max_size <= 0 ) return 0;
|
|
size_t size = utf16_stringnn_from_utf32_string(dst, dst_max_size, s);
|
|
if ( size >= dst_max_size ) {
|
|
*(dst + dst_max_size - 1) = 0;
|
|
return dst_max_size-1;
|
|
}else{
|
|
*(dst + size) = 0;
|
|
return size;
|
|
}
|
|
}
|
|
|
|
//size_t utf16_string_from_utf32_string(char16_t* dst, size_t dst_max_size, const char32_t *s)
|
|
//{
|
|
// if ( dst_max_size <= 0 ) return 0;
|
|
// if ( !s ) {
|
|
// *dst = 0;
|
|
// return 0;
|
|
// }
|
|
// char16_t* p = dst;
|
|
//// char16_t* p_max = dst + dst_max_size - 1;
|
|
//
|
|
// while ( *s && dst_max_size > 0 ) {
|
|
// p = get_utf16_from_char32(p, &dst_max_size, *s++);
|
|
// }
|
|
// *p = 0;
|
|
// return (size_t)(p-dst);
|
|
//}
|
|
|
|
size_t utf16_string_from_utf32_string_len(char16_t* dst, size_t dst_max_size, const char32_t *s, size_t len)
|
|
{
|
|
if ( dst_max_size <= 0 ) return 0;
|
|
if ( !s || len <= 0 ) {
|
|
*dst = 0;
|
|
return 0;
|
|
}
|
|
char16_t* p = dst;
|
|
// char16_t* p_max = dst + dst_max_size - 1;
|
|
|
|
dst_max_size--;
|
|
while ( *s && dst_max_size > 0 && len > 0 ) {
|
|
p = get_utf16_from_char32(p, &dst_max_size, *s++);
|
|
len--;
|
|
}
|
|
*p = 0;
|
|
return (size_t)(p-dst);
|
|
}
|
|
|
|
size_t utf16_string_from_utf32_string_size(char16_t* dst, size_t dst_max_size, const char32_t *s, size_t size)
|
|
{
|
|
if ( dst_max_size <= 0 ) return 0;
|
|
if ( !s || size <= 0 ) {
|
|
*dst = 0;
|
|
return 0;
|
|
}
|
|
|
|
dst_max_size -= 1;
|
|
const char32_t* s_start = s;
|
|
char16_t* p = dst;
|
|
|
|
while ( *s && dst_max_size > 0 && (uintptr_t)(s - s_start) < size ) {
|
|
p = get_utf16_from_char32(p, &dst_max_size, *s++);
|
|
}
|
|
*p = 0;
|
|
return (size_t)(p-dst);
|
|
}
|
|
|
|
size_t utf32_stringnn_from_utf16_string(char32_t* dst, size_t dst_max_size, const char16_t *s)
|
|
{
|
|
if ( dst_max_size <= 0 ) return 0;
|
|
if ( !s ) return 0;
|
|
|
|
char32_t* p = dst;
|
|
char32_t* p_max = dst + dst_max_size;
|
|
|
|
char32_t c;
|
|
while ( *s && p < p_max ) {
|
|
s = get_char32_from_utf16_string(s, &c);
|
|
if ( c == 0 ) return (size_t)(p-dst);
|
|
*p++ = c;
|
|
}
|
|
return (size_t)(p-dst);
|
|
}
|
|
|
|
size_t utf32_string_from_utf16_string(char32_t* dst, size_t dst_max_size, const char16_t *s)
|
|
{
|
|
if ( dst_max_size <= 0 ) return 0;
|
|
size_t size = utf32_stringnn_from_utf16_string(dst, dst_max_size, s);
|
|
if ( size >= dst_max_size ) {
|
|
*(dst + dst_max_size - 1) = 0;
|
|
return dst_max_size-1;
|
|
}else{
|
|
*(dst + size) = 0;
|
|
return size;
|
|
}
|
|
}
|
|
|
|
//size_t utf32_string_from_utf16_string(char32_t* dst, size_t dst_max_size, const char16_t *s)
|
|
//{
|
|
// if ( dst_max_size <= 0 ) return 0;
|
|
// if ( !s ) {
|
|
// *dst = 0;
|
|
// return 0;
|
|
// }
|
|
// char32_t* p = dst;
|
|
// char32_t* p_max = dst + dst_max_size - 1;
|
|
//
|
|
// char32_t c;
|
|
// while ( *s && p < p_max ) {
|
|
// s = get_char32_from_utf16_string(s, &c);
|
|
// if ( c == 0 ) return (size_t)(p-dst);
|
|
// *p++ = c;
|
|
// }
|
|
// *p = 0;
|
|
// return (size_t)(p-dst);
|
|
//}
|
|
|
|
size_t utf32_string_from_utf16_string_len(char32_t* dst, size_t dst_max_size, const char16_t *s, size_t len)
|
|
{
|
|
if ( dst_max_size <= 0 ) return 0;
|
|
if ( !s || len <= 0 ) {
|
|
*dst = 0;
|
|
return 0;
|
|
}
|
|
char32_t* p = dst;
|
|
char32_t* p_max = dst + dst_max_size - 1;
|
|
|
|
char32_t c;
|
|
while ( *s && p < p_max && len > 0 ) {
|
|
s = get_char32_from_utf16_string(s, &c);
|
|
if ( c == 0 ) return (size_t)(p-dst);
|
|
*p++ = c;
|
|
len--;
|
|
}
|
|
*p = 0;
|
|
return (size_t)(p-dst);
|
|
}
|
|
|
|
size_t utf32_string_from_utf16_string_size(char32_t* dst, size_t dst_max_size, const char16_t *s, size_t size)
|
|
{
|
|
if ( dst_max_size <= 0 ) return 0;
|
|
if ( !s || size <= 0 ) {
|
|
*dst = 0;
|
|
return 0;
|
|
}
|
|
dst_max_size -= 1;
|
|
const char16_t* s_start = s;
|
|
char32_t* p = dst;
|
|
char32_t* p_max = dst + dst_max_size;
|
|
|
|
char32_t char32;
|
|
s = get_char32_from_utf16_string(s, &char32);
|
|
while ( char32 != 0 && p < p_max && (uintptr_t)(s - s_start) <= size ) {
|
|
*p++ = char32;
|
|
s = get_char32_from_utf16_string(s, &char32);
|
|
}
|
|
*p = 0;
|
|
return (size_t)(p-dst);
|
|
}
|
|
|
|
|
|
/*
|
|
* get nth char32 of an utf16 string
|
|
* Return value : pointer to the end of string or at the error
|
|
*/
|
|
char32_t get_char32_from_utf16_string_at_pos(const char16_t* s, size_t pos)
|
|
{
|
|
if ( !s ) return 0;
|
|
char32_t char32;
|
|
s = get_char32_from_utf16_string(s, &char32);
|
|
while ( char32 && pos > 0 ) {
|
|
s = get_char32_from_utf16_string(s, &char32);
|
|
pos--;
|
|
}
|
|
return char32;
|
|
}
|
|
|
|
|
|
|
|
/************************************************************* utf8 - wchar_t *********************************************************/
|
|
|
|
size_t utf8_size_of_wchar_string(const wchar_t* s)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf8_size_of_utf16_string((wchar_cast*)s);
|
|
#else
|
|
return utf8_size_of_utf32_string((wchar_cast*)s);
|
|
#endif
|
|
}
|
|
|
|
size_t utf8_size_of_wchar_string_len(const wchar_t* s, size_t len)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf8_size_of_utf16_string_len((wchar_cast*)s, len);
|
|
#else
|
|
return utf8_size_of_utf32_string_len((wchar_cast*)s, len);
|
|
#endif
|
|
}
|
|
|
|
size_t wchar_size_of_utf8_string(const char* s)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf16_size_of_utf8_string(s);
|
|
#else
|
|
return utf32_size_of_utf8_string(s);
|
|
#endif
|
|
}
|
|
|
|
size_t wchar_size_of_utf8_string_len(const char* s, size_t len)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf16_size_of_utf8_string_len(s, len);
|
|
#else
|
|
return utf32_size_of_utf8_string_len(s, len);
|
|
#endif
|
|
}
|
|
|
|
size_t utf8_stringnn_from_wchar_string(char* dst, size_t dst_max_size, const wchar_t* s)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf8_stringnn_from_utf16_string(dst, dst_max_size, (char16_t*)s);
|
|
#else
|
|
return utf8_stringnn_from_utf32_string(dst, dst_max_size, (char32_t*)s);
|
|
#endif
|
|
}
|
|
|
|
size_t utf8_string_from_wchar_string(char* dst, size_t dst_max_size, const wchar_t* s)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf8_string_from_utf16_string(dst, dst_max_size, (char16_t*)s);
|
|
#else
|
|
return utf8_string_from_utf32_string(dst, dst_max_size, (char32_t*)s);
|
|
#endif
|
|
}
|
|
|
|
size_t utf8_string_from_wchar_string_len(char* dst, size_t dst_max_size, const wchar_t* s, size_t len)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf8_string_from_utf16_string_len(dst, dst_max_size, (char16_t*)s, len);
|
|
#else
|
|
return utf8_string_from_utf32_string_len(dst, dst_max_size, (char32_t*)s, len);
|
|
#endif
|
|
}
|
|
|
|
size_t utf8_string_from_wchar_string_size(char* dst, size_t dst_max_size, const wchar_t* s, size_t size)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf8_string_from_utf16_string_size(dst, dst_max_size, (char16_t*)s, size);
|
|
#else
|
|
return utf8_string_from_utf32_string_size(dst, dst_max_size, (char32_t*)s, size);
|
|
#endif
|
|
}
|
|
|
|
size_t wchar_stringnn_from_utf8_string(wchar_t* dst, size_t dst_max_size, const char* s)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf16_stringnn_from_utf8_string((char16_t*)dst, dst_max_size, s);
|
|
#else
|
|
return utf32_stringnn_from_utf8_string((char32_t*)dst, dst_max_size, s);
|
|
#endif
|
|
}
|
|
|
|
size_t wchar_string_from_utf8_string(wchar_t* dst, size_t dst_max_size, const char* s)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf16_string_from_utf8_string((char16_t*)dst, dst_max_size, s);
|
|
#else
|
|
return utf32_string_from_utf8_string((char32_t*)dst, dst_max_size, s);
|
|
#endif
|
|
}
|
|
|
|
size_t wchar_string_from_utf8_string_len(wchar_t* dst, size_t dst_max_size, const char* s, size_t len)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf16_string_from_utf8_string_len((char16_t*)dst, dst_max_size, s, len);
|
|
#else
|
|
return utf32_string_from_utf8_string_len((char32_t*)dst, dst_max_size, s, len);
|
|
#endif
|
|
}
|
|
|
|
size_t wchar_string_from_utf8_string_size(wchar_t* dst, size_t dst_max_size, const char* s, size_t size)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf16_string_from_utf8_string_size((char16_t*)dst, dst_max_size, s, size);
|
|
#else
|
|
return utf32_string_from_utf8_string_size((char32_t*)dst, dst_max_size, s, size);
|
|
#endif
|
|
}
|
|
|
|
|
|
/************************************************************* utf16 - wchar_t *********************************************************/
|
|
|
|
size_t utf16_size_of_wchar_string(const wchar_t* s)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf16_size_of_utf16_string((wchar_cast*)s);
|
|
#else
|
|
return utf16_size_of_utf32_string((wchar_cast*)s);
|
|
#endif
|
|
}
|
|
|
|
size_t utf16_size_of_wchar_string_len(const wchar_t* s, size_t len)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf16_size_of_utf16_string_len((wchar_cast*)s, len);
|
|
#else
|
|
return utf16_size_of_utf32_string_len((wchar_cast*)s, len);
|
|
#endif
|
|
}
|
|
|
|
size_t wchar_size_of_utf16_string(const char16_t* s)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf16_size_of_utf16_string(s);
|
|
#else
|
|
return utf32_size_of_utf16_string(s);
|
|
#endif
|
|
}
|
|
|
|
size_t wchar_size_of_utf16_string_len(const char16_t* s, size_t len)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf16_size_of_utf16_string_len(s, len);
|
|
#else
|
|
return utf32_size_of_utf16_string_len(s, len);
|
|
#endif
|
|
}
|
|
|
|
size_t utf16_stringnn_from_wchar_string(char16_t* dst, size_t dst_max_size, const wchar_t* s)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf16_stringnn_from_utf16_string(dst, dst_max_size, (char16_t*)s);
|
|
#else
|
|
return utf16_stringnn_from_utf32_string(dst, dst_max_size, (char32_t*)s);
|
|
#endif
|
|
}
|
|
|
|
size_t utf16_string_from_wchar_string(char16_t* dst, size_t dst_max_size, const wchar_t* s)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf16_string_from_utf16_string(dst, dst_max_size, (char16_t*)s);
|
|
#else
|
|
return utf16_string_from_utf32_string(dst, dst_max_size, (char32_t*)s);
|
|
#endif
|
|
}
|
|
|
|
size_t utf16_string_from_wchar_string_len(char16_t* dst, size_t dst_max_size, const wchar_t* s, size_t len)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf16_string_from_utf16_string_len(dst, dst_max_size, (char16_t*)s, len);
|
|
#else
|
|
return utf16_string_from_utf32_string_len(dst, dst_max_size, (char32_t*)s, len);
|
|
#endif
|
|
}
|
|
|
|
size_t utf16_string_from_wchar_string_size(char16_t* dst, size_t dst_max_size, const wchar_t* s, size_t size)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf16_string_from_utf16_string_size(dst, dst_max_size, (char16_t*)s, size);
|
|
#else
|
|
return utf16_string_from_utf32_string_size(dst, dst_max_size, (char32_t*)s, size);
|
|
#endif
|
|
}
|
|
|
|
size_t wchar_stringnn_from_utf16_string(wchar_t* dst, size_t dst_max_size, const char16_t* s)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf16_stringnn_from_utf16_string((char16_t*)dst, dst_max_size, s);
|
|
#else
|
|
return utf32_stringnn_from_utf16_string((char32_t*)dst, dst_max_size, s);
|
|
#endif
|
|
}
|
|
|
|
size_t wchar_string_from_utf16_string(wchar_t* dst, size_t dst_max_size, const char16_t* s)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf16_string_from_utf16_string((char16_t*)dst, dst_max_size, s);
|
|
#else
|
|
return utf32_string_from_utf16_string((char32_t*)dst, dst_max_size, s);
|
|
#endif
|
|
}
|
|
|
|
size_t wchar_string_from_utf16_string_len(wchar_t* dst, size_t dst_max_size, const char16_t* s, size_t len)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf16_string_from_utf16_string_len((char16_t*)dst, dst_max_size, s, len);
|
|
#else
|
|
return utf32_string_from_utf16_string_len((char32_t*)dst, dst_max_size, s, len);
|
|
#endif
|
|
}
|
|
|
|
size_t wchar_string_from_utf16_string_size(wchar_t* dst, size_t dst_max_size, const char16_t* s, size_t size)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf16_string_from_utf16_string_size((char16_t*)dst, dst_max_size, s, size);
|
|
#else
|
|
return utf32_string_from_utf16_string_size((char32_t*)dst, dst_max_size, s, size);
|
|
#endif
|
|
}
|
|
|
|
/************************************************************* utf32 - wchar_t *********************************************************/
|
|
|
|
|
|
size_t utf32_size_of_wchar_string(const wchar_t* s)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf32_size_of_utf16_string((wchar_cast*)s);
|
|
#else
|
|
return utf32_size_of_utf32_string((wchar_cast*)s);
|
|
#endif
|
|
}
|
|
|
|
size_t utf32_size_of_wchar_string_len(const wchar_t* s, size_t len)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf32_size_of_utf16_string_len((wchar_cast*)s, len);
|
|
#else
|
|
return utf32_size_of_utf32_string_len((wchar_cast*)s, len);
|
|
#endif
|
|
}
|
|
|
|
|
|
size_t wchar_size_of_utf32_string(const char32_t* s)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf16_size_of_utf32_string(s);
|
|
#else
|
|
return utf32_size_of_utf32_string(s);
|
|
#endif
|
|
}
|
|
|
|
size_t wchar_size_of_utf32_string_len(const char32_t* s, size_t len)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf16_size_of_utf32_string_len(s, len);
|
|
#else
|
|
return utf32_size_of_utf32_string_len(s, len);
|
|
#endif
|
|
}
|
|
|
|
size_t utf32_stringnn_from_wchar_string(char32_t* dst, size_t dst_max_size, const wchar_t* s)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf32_stringnn_from_utf16_string(dst, dst_max_size, (char16_t*)s);
|
|
#else
|
|
return utf32_stringnn_from_utf32_string(dst, dst_max_size, (char32_t*)s);
|
|
#endif
|
|
}
|
|
|
|
size_t utf32_string_from_wchar_string(char32_t* dst, size_t dst_max_size, const wchar_t* s)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf32_string_from_utf16_string(dst, dst_max_size, (char16_t*)s);
|
|
#else
|
|
return utf32_string_from_utf32_string(dst, dst_max_size, (char32_t*)s);
|
|
#endif
|
|
}
|
|
|
|
size_t utf32_string_from_wchar_string_len(char32_t* dst, size_t dst_max_size, const wchar_t* s, size_t len)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf32_string_from_utf16_string_len(dst, dst_max_size, (char16_t*)s, len);
|
|
#else
|
|
return utf32_string_from_utf32_string_len(dst, dst_max_size, (char32_t*)s, len);
|
|
#endif
|
|
}
|
|
|
|
size_t utf32_string_from_wchar_string_size(char32_t* dst, size_t dst_max_size, const wchar_t* s, size_t size)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf32_string_from_utf16_string_size(dst, dst_max_size, (char16_t*)s, size);
|
|
#else
|
|
return utf32_string_from_utf32_string_size(dst, dst_max_size, (char32_t*)s, size);
|
|
#endif
|
|
}
|
|
|
|
size_t wchar_stringnn_from_utf32_string(wchar_t* dst, size_t dst_max_size, const char32_t* s)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf16_stringnn_from_utf32_string((char16_t*)dst, dst_max_size, s);
|
|
#else
|
|
return utf32_stringnn_from_utf32_string((char32_t*)dst, dst_max_size, s);
|
|
#endif
|
|
}
|
|
|
|
size_t wchar_string_from_utf32_string(wchar_t* dst, size_t dst_max_size, const char32_t* s)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf16_string_from_utf32_string((char16_t*)dst, dst_max_size, s);
|
|
#else
|
|
return utf32_string_from_utf32_string((char32_t*)dst, dst_max_size, s);
|
|
#endif
|
|
}
|
|
|
|
size_t wchar_string_from_utf32_string_len(wchar_t* dst, size_t dst_max_size, const char32_t* s, size_t len)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf16_string_from_utf32_string_len((char16_t*)dst, dst_max_size, s, len);
|
|
#else
|
|
return utf32_string_from_utf32_string_len((char32_t*)dst, dst_max_size, s, len);
|
|
#endif
|
|
}
|
|
|
|
size_t wchar_string_from_utf32_string_size(wchar_t* dst, size_t dst_max_size, const char32_t* s, size_t size)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf16_string_from_utf32_string_size((char16_t*)dst, dst_max_size, s, size);
|
|
#else
|
|
return utf32_string_from_utf32_string_size((char32_t*)dst, dst_max_size, s, size);
|
|
#endif
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* get nth char32 of an utf16 string
|
|
* Return value : pointer to the end of string or at the error
|
|
*/
|
|
char32_t get_char32_from_wchar_string_at_pos(const char16_t* s, size_t pos)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return get_char32_from_utf16_string_at_pos((char16_t*)s, pos);
|
|
#else
|
|
return get_char32_from_utf32_string_at_pos((char32_t*)s, pos);
|
|
#endif
|
|
}
|
|
|
|
|
|
|
|
|
|
/************************************************************* no conversion *********************************************************/
|
|
|
|
// Not efficient. Could be map to the ones provided by operating system
|
|
size_t utf8_size_of_utf8_string(const char* s)
|
|
{
|
|
if ( !s ) return 0;
|
|
////2021 : tested on macOS. With this version, test took 8 seconds.
|
|
// char32_t char32 = 1;
|
|
// const char* p = s;
|
|
// while ( char32 ) {
|
|
// p = get_char32_from_utf8_string(p, &char32);
|
|
// }
|
|
// return (uintptr_t)p - (uintptr_t)s;
|
|
|
|
return strlen(s);// With this version, test took 0.2 seconds. strlen on macOs is optimized for SSE.
|
|
|
|
// return clover_strlen(s); // With this version, test took 0.4 seconds.
|
|
|
|
//// 2021 : // With this version, test took 2.2 seconds.
|
|
// const char* p = s;
|
|
// while ( *p++ );
|
|
// return (uintptr_t)p - (uintptr_t)s - 1;
|
|
}
|
|
|
|
size_t utf8_size_of_utf8_string_len(const char* s, size_t len)
|
|
{
|
|
if ( !s || len <= 0 ) return 0;
|
|
char32_t char32 = 1;
|
|
const char* p = s; // = get_char32_from_utf8_string(s, &char32);
|
|
while ( char32 && len > 0 ) {
|
|
p = get_char32_from_utf8_string(p, &char32);
|
|
len -= 1;
|
|
}
|
|
return (size_t)(p-s);// p-s is in number of char32_t, not bytes. Careful, uintptr_t(p)-uintptr_t(s) would be in bytes
|
|
}
|
|
|
|
size_t utf16_size_of_utf16_string(const char16_t* s)
|
|
{
|
|
if ( !s ) return 0;
|
|
char32_t char32 = 1;
|
|
const char16_t* p = s; // = get_char32_from_utf8_string(s, &char32);
|
|
while ( char32 ) {
|
|
p = get_char32_from_utf16_string(p, &char32);
|
|
}
|
|
return (size_t)(p-s);// p-s is in number of char32_t, not bytes. Careful, uintptr_t(p)-uintptr_t(s) would be in bytes
|
|
// const char16_t* p = s;
|
|
// while ( *p++ );
|
|
// return (size_t)(p-s-1);
|
|
}
|
|
|
|
size_t utf16_size_of_utf16_string_len(const char16_t* s, size_t len)
|
|
{
|
|
if ( !s ) return 0;
|
|
size_t size = 0;
|
|
char32_t char32;
|
|
s = get_char32_from_utf16_string(s, &char32);
|
|
while ( char32 && len > 0 ) {
|
|
size += utf16_size_of_utf32_char(char32);
|
|
s = get_char32_from_utf16_string(s, &char32);
|
|
len -= 1;
|
|
}
|
|
return size;
|
|
}
|
|
|
|
size_t utf32_size_of_utf32_string(const char32_t* s)
|
|
{
|
|
const char32_t* p = s;
|
|
while ( *p++ );
|
|
return ((size_t)(p-s-1)); // p-s is in number of char32_t, not bytes. // Let's hope that p-s-1 is not > MAX_SIZET
|
|
}
|
|
|
|
size_t utf32_size_of_utf32_string_len(const char32_t* s, size_t len)
|
|
{
|
|
const char32_t* p = s;
|
|
while ( *p++ && len > 0 ) len -= 1;
|
|
return ((size_t)(p-s-1)); // p-s is in number of char32_t, not bytes. // Let's hope that p-s-1 is not > MAX_SIZET
|
|
}
|
|
|
|
size_t wchar_size_of_wchar_string(const wchar_t* s)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf16_size_of_utf16_string((char16_t*)s);
|
|
#else
|
|
return utf32_size_of_utf32_string((char32_t*)s);
|
|
#endif
|
|
}
|
|
|
|
size_t wchar_size_of_wchar_string_len(const wchar_t* s, size_t len)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf16_size_of_utf16_string_len((char16_t*)s, len);
|
|
#else
|
|
return utf32_size_of_utf32_string_len((char32_t*)s, len);
|
|
#endif
|
|
}
|
|
|
|
|
|
|
|
size_t utf8_stringnn_from_utf8_string(char* dst, size_t dst_max_size, const char *s)
|
|
{
|
|
if ( !s || dst_max_size <= 0 ) return 0;
|
|
|
|
char* p = dst;
|
|
char32_t char32;
|
|
s = get_char32_from_utf8_string(s, &char32);
|
|
while ( char32 ) {
|
|
p = get_utf8_from_char32(p, &dst_max_size, char32);
|
|
if ( dst_max_size <= 0 ) break;
|
|
s = get_char32_from_utf8_string(s, &char32);
|
|
}
|
|
return (uintptr_t)p - (uintptr_t)dst;
|
|
}
|
|
|
|
size_t utf8_string_from_utf8_string(char* dst, size_t dst_max_size, const char *s)
|
|
{
|
|
if ( dst_max_size <= 0 ) return 0;
|
|
size_t size = utf8_stringnn_from_utf8_string(dst, dst_max_size, s);
|
|
if ( size >= dst_max_size ) {
|
|
*(dst + dst_max_size - 1) = 0;
|
|
return dst_max_size-1;
|
|
}else{
|
|
*(dst + size) = 0;
|
|
return size;
|
|
}
|
|
}
|
|
//
|
|
//size_t utf8_string_from_utf8_string(char* dst, size_t dst_max_size, const char *s)
|
|
//{
|
|
// if ( !s || dst_max_size <= 1 ) {
|
|
// if ( dst_max_size > 0 ) *dst = 0;
|
|
// return 0;
|
|
// }
|
|
// dst_max_size -= 1;
|
|
// char* p = dst;
|
|
// char32_t char32;
|
|
// s = get_char32_from_utf8_string(s, &char32);
|
|
// while ( char32 && dst_max_size > 0 ) {
|
|
// p = get_utf8_from_char32(p, &dst_max_size, char32);
|
|
// s = get_char32_from_utf8_string(s, &char32);
|
|
// }
|
|
// *p = 0;
|
|
// return uintptr_t(p)-uintptr_t(dst)-1;
|
|
//}
|
|
|
|
size_t utf8_string_from_utf8_string_len(char* dst, size_t dst_max_size, const char *s, size_t len)
|
|
{
|
|
if ( !s || len <= 0 || dst_max_size <= 1 ) {
|
|
if ( dst_max_size > 0 ) *dst = 0;
|
|
return 0;
|
|
}
|
|
dst_max_size -= 1;
|
|
char* p = dst;
|
|
char32_t char32;
|
|
s = get_char32_from_utf8_string(s, &char32);
|
|
while ( char32 && dst_max_size > 0 && len > 0) {
|
|
p = get_utf8_from_char32(p, &dst_max_size, char32);
|
|
s = get_char32_from_utf8_string(s, &char32);
|
|
len--;
|
|
}
|
|
*p = 0;
|
|
// return (uintptr_t)p - (uintptr_t)dst - 1;
|
|
return (uintptr_t)p - (uintptr_t)dst;
|
|
}
|
|
|
|
/*
|
|
Number Bits for First Last Byte 1 Byte 2 Byte 3 cByte 4
|
|
of bytes code point
|
|
1 7 U+0000 U+007F 0xxxxxxx
|
|
2 11 U+0080 U+07FF 110xxxxx 10xxxxxx
|
|
3 16 U+0800 U+FFFF 1110xxxx 10xxxxxx 10xxxxxx
|
|
4 21 U+10000 U+10FFFF[12] 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
|
|
*/
|
|
|
|
size_t utf8_string_from_utf8_string_size(char* dst, size_t dst_max_size, const char *s, size_t size)
|
|
{
|
|
if ( !s || size <= 0 || dst_max_size <= 1 ) {
|
|
if ( dst_max_size > 0 ) *dst = 0;
|
|
return 0;
|
|
}
|
|
size_t real_size = utf8_size_of_utf8_string(s);
|
|
if ( real_size == 0 ) {
|
|
*dst = 0; // here, dst_max_size is > 1
|
|
return 0;
|
|
}
|
|
size = MIN(real_size, size);
|
|
dst_max_size -= 1;
|
|
size = MIN(size, dst_max_size);
|
|
|
|
if ( s[size-1] & 0x80 )
|
|
{
|
|
size_t idx_of_first_multibyte = size;
|
|
while ( idx_of_first_multibyte > 0 && (s[--idx_of_first_multibyte] & 0xC0) == 0x80 ) ;
|
|
|
|
if ( (s[idx_of_first_multibyte] & 0xC0) == 0xC0 ) // this is the first of the multibyte sequence
|
|
{
|
|
if ( (s[idx_of_first_multibyte] & 0xE0) == 0xC0 ) { // 2 bytes sequence
|
|
if ( size - idx_of_first_multibyte < 2 ) size = idx_of_first_multibyte;
|
|
else size = idx_of_first_multibyte + 2;
|
|
}else
|
|
if ( (s[idx_of_first_multibyte] & 0xF0) == 0xE0 ) { // 3 bytes sequence
|
|
if ( size - idx_of_first_multibyte < 3 ) size = idx_of_first_multibyte;
|
|
else size = idx_of_first_multibyte + 3;
|
|
}else
|
|
if ( (s[idx_of_first_multibyte] & 0xF8) == 0xF0 ) { // 3 bytes sequence
|
|
if ( size - idx_of_first_multibyte < 4 ) size = idx_of_first_multibyte;
|
|
else size = idx_of_first_multibyte + 4;
|
|
}
|
|
}else{
|
|
while ( size > 1 && ( s[--size] & 0x80 ) ) ; // remove all the multibyte chars because there is none multibyte beginning sequence.
|
|
}
|
|
}
|
|
// while ( size > 0 && (s[size-1] & 0x80) ) --size; // ignore incomplete UTF8 sequence. // Cannot put the --size inside the if because size must not be modified if !(s[size-1] & 0x80)
|
|
memmove(dst, s, size);
|
|
dst[size] = 0;
|
|
return size;
|
|
}
|
|
|
|
size_t utf16_stringnn_from_utf16_string(char16_t* dst, size_t dst_max_size, const char16_t *s)
|
|
{
|
|
if ( !s || dst_max_size <= 0 ) return 0;
|
|
|
|
char16_t* p = dst;
|
|
char32_t char32;
|
|
s = get_char32_from_utf16_string(s, &char32);
|
|
while ( char32 ) {
|
|
p = get_utf16_from_char32(p, &dst_max_size, char32);
|
|
if ( dst_max_size <= 0 ) break;
|
|
s = get_char32_from_utf16_string(s, &char32);
|
|
}
|
|
return (uintptr_t)(p - dst);
|
|
}
|
|
|
|
|
|
size_t utf16_string_from_utf16_string(char16_t* dst, size_t dst_max_size, const char16_t *s)
|
|
{
|
|
if ( dst_max_size <= 0 ) return 0;
|
|
size_t size = utf16_stringnn_from_utf16_string(dst, dst_max_size, s);
|
|
if ( size >= dst_max_size ) {
|
|
*(dst + dst_max_size - 1) = 0;
|
|
return dst_max_size-1;
|
|
}else{
|
|
*(dst + size) = 0;
|
|
return size;
|
|
}
|
|
}
|
|
|
|
//
|
|
//size_t utf16_string_from_utf16_string(char16_t* dst, size_t dst_max_size, const char16_t *s)
|
|
//{
|
|
// if ( !s || dst_max_size <= 1 ) {
|
|
// if ( dst_max_size > 0 ) *dst = 0;
|
|
// return 0;
|
|
// }
|
|
// dst_max_size -= 1;
|
|
// char16_t* p = dst;
|
|
// char32_t char32;
|
|
// s = get_char32_from_utf16_string(s, &char32);
|
|
// while ( char32 && dst_max_size > 0 ) {
|
|
// p = get_utf16_from_char32(p, &dst_max_size, char32);
|
|
// s = get_char32_from_utf16_string(s, &char32);
|
|
// }
|
|
// *p = 0;
|
|
// return uintptr_t(p)-uintptr_t(dst)-1;
|
|
//// size_t s_len = utf16_size_of_utf16_string(s);
|
|
//// if ( dst_max_size > s_len ) dst_max_size = s_len;
|
|
//// else dst_max_size -= 1;
|
|
//// memcpy((void*)dst, (void*)s, dst_max_size * sizeof(char16_t));
|
|
//// dst[dst_max_size] = 0;
|
|
//// return dst_max_size * sizeof(char16_t);
|
|
//}
|
|
|
|
size_t utf16_string_from_utf16_string_len(char16_t* dst, size_t dst_max_size, const char16_t *s, size_t len)
|
|
{
|
|
if ( !s || len <= 0 || dst_max_size <= 1 ) {
|
|
if ( dst_max_size > 0 ) *dst = 0;
|
|
return 0;
|
|
}
|
|
dst_max_size -= 1;
|
|
char16_t* p = dst;
|
|
char32_t char32;
|
|
s = get_char32_from_utf16_string(s, &char32);
|
|
while ( char32 && dst_max_size > 0 && len > 0) {
|
|
p = get_utf16_from_char32(p, &dst_max_size, char32);
|
|
s = get_char32_from_utf16_string(s, &char32);
|
|
len--;
|
|
}
|
|
*p = 0;
|
|
return (uintptr_t)(p - dst);
|
|
}
|
|
|
|
size_t utf16_string_from_utf16_string_size(char16_t* dst, size_t dst_max_size, const char16_t *s, size_t size)
|
|
{
|
|
if ( dst_max_size == 0 ) return 0;
|
|
if ( dst_max_size == 1 || !s || size <= 0 ) {
|
|
*dst = 0;
|
|
return 0;
|
|
}
|
|
size_t real_size = utf16_size_of_utf16_string(s);
|
|
if ( real_size == 0 ) {
|
|
*dst = 0; // here, dst_max_size is > 1
|
|
return 0;
|
|
}
|
|
size = MIN(real_size, size); // size & real_size are >= 1
|
|
dst_max_size -= 1; // dst_max_size is > 1
|
|
size = MIN(size, dst_max_size); // here, size is >= 1
|
|
|
|
if ( is_high_surrogate(s[size-1]) ) --size;
|
|
|
|
memmove(dst, s, size*sizeof(char16_t));
|
|
dst[size] = 0;
|
|
return size;
|
|
}
|
|
|
|
size_t utf32_stringnn_from_utf32_string(char32_t* dst, size_t dst_max_size, const char32_t *s)
|
|
{
|
|
if ( !s || dst_max_size <= 0 ) {
|
|
return 0;
|
|
}
|
|
size_t s_len = utf32_size_of_utf32_string(s);
|
|
if ( dst_max_size > s_len ) dst_max_size = s_len;
|
|
memcpy((void*)dst, (void*)s, dst_max_size * sizeof(char32_t));
|
|
return dst_max_size;
|
|
}
|
|
|
|
size_t utf32_string_from_utf32_string(char32_t* dst, size_t dst_max_size, const char32_t *s)
|
|
{
|
|
if ( dst_max_size <= 0 ) return 0;
|
|
size_t size = utf32_stringnn_from_utf32_string(dst, dst_max_size, s);
|
|
if ( size >= dst_max_size ) {
|
|
*(dst + dst_max_size - 1) = 0;
|
|
return dst_max_size-1;
|
|
}else{
|
|
*(dst + size) = 0;
|
|
return size;
|
|
}
|
|
}
|
|
|
|
//size_t utf32_string_from_utf32_string(char32_t* dst, size_t dst_max_size, const char32_t *s)
|
|
//{
|
|
// if ( !s || dst_max_size <= 1 ) {
|
|
// if ( dst_max_size > 0 ) *dst = 0;
|
|
// return 0;
|
|
// }
|
|
// size_t s_len = utf32_size_of_utf32_string(s);
|
|
// if ( dst_max_size > s_len ) dst_max_size = s_len;
|
|
// else dst_max_size -= 1;
|
|
// memcpy((void*)dst, (void*)s, dst_max_size * sizeof(char32_t));
|
|
// dst[dst_max_size] = 0;
|
|
// return dst_max_size * sizeof(char32_t);
|
|
//}
|
|
|
|
size_t utf32_string_from_utf32_string_len(char32_t* dst, size_t dst_max_size, const char32_t *s, size_t len)
|
|
{
|
|
if ( !s || len <= 0 || dst_max_size <= 1 ) {
|
|
if ( dst_max_size > 0 ) *dst = 0;
|
|
return 0;
|
|
}
|
|
size_t s_len = utf32_size_of_utf32_string_len(s, len);
|
|
if ( dst_max_size > s_len ) dst_max_size = s_len;
|
|
else dst_max_size -= 1;
|
|
memcpy((void*)dst, (void*)s, dst_max_size * sizeof(char32_t));
|
|
dst[dst_max_size] = 0;
|
|
return dst_max_size;
|
|
}
|
|
|
|
size_t utf32_string_from_utf32_string_size(char32_t* dst, size_t dst_max_size, const char32_t *s, size_t size)
|
|
{
|
|
if ( !s || size <= 0 || dst_max_size <= 1 ) {
|
|
if ( dst_max_size > 0 ) *dst = 0;
|
|
return 0;
|
|
}
|
|
size_t real_size = utf32_size_of_utf32_string(s);
|
|
if ( real_size == 0 ) {
|
|
*dst = 0; // here, dst_max_size is > 1
|
|
return 0;
|
|
}
|
|
size = MIN(real_size, size);
|
|
dst_max_size -= 1;
|
|
size = MIN(size, dst_max_size);
|
|
|
|
memmove(dst, s, size*sizeof(char32_t));
|
|
dst[size] = 0;
|
|
return size;
|
|
}
|
|
|
|
size_t wchar_stringnn_from_wchar_string(wchar_t* dst, size_t dst_max_size, const wchar_t *s)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf16_stringnn_from_utf16_string((char16_t*)dst, dst_max_size, (char16_t*)s);
|
|
#else
|
|
return utf32_stringnn_from_utf32_string((char32_t*)dst, dst_max_size, (char32_t*)s);
|
|
#endif
|
|
}
|
|
|
|
size_t wchar_string_from_wchar_string(wchar_t* dst, size_t dst_max_size, const wchar_t *s)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf16_string_from_utf16_string((char16_t*)dst, dst_max_size, (char16_t*)s);
|
|
#else
|
|
return utf32_string_from_utf32_string((char32_t*)dst, dst_max_size, (char32_t*)s);
|
|
#endif
|
|
}
|
|
|
|
size_t wchar_string_from_wchar_string_len(wchar_t* dst, size_t dst_max_size, const wchar_t *s, size_t len)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf16_string_from_utf16_string_len((char16_t*)dst, dst_max_size, (char16_t*)s, len);
|
|
#else
|
|
return utf32_string_from_utf32_string_len((char32_t*)dst, dst_max_size, (char32_t*)s, len);
|
|
#endif
|
|
}
|
|
|
|
size_t wchar_string_from_wchar_string_size(wchar_t* dst, size_t dst_max_size, const wchar_t *s, size_t size)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return utf16_string_from_utf16_string_size((char16_t*)dst, dst_max_size, (char16_t*)s, size);
|
|
#else
|
|
return utf32_string_from_utf32_string_size((char32_t*)dst, dst_max_size, (char32_t*)s, size);
|
|
#endif
|
|
}
|
|
|
|
|
|
/*
|
|
* get nth char32 of an utf32 string
|
|
* Return value : pointer to the end of string or at the error
|
|
*/
|
|
char32_t get_char32_from_utf32_string_at_pos(const char32_t* s, size_t pos)
|
|
{
|
|
if ( !s ) return 0;
|
|
while ( *s && pos > 0 ) {
|
|
s++;
|
|
pos--;
|
|
}
|
|
return *s;
|
|
}
|
|
|
|
/****** convenience *****/
|
|
size_t length_of_utf8_string(const char* s) {return utf32_size_of_utf8_string(s); }
|
|
size_t length_of_utf16_string(const char16_t* s) {return utf32_size_of_utf16_string(s); }
|
|
size_t length_of_utf32_string(const char32_t* s) {return utf32_size_of_utf32_string(s); } // UTF32 length == size
|
|
|
|
size_t length_of_wchar_string(const wchar_t* s)
|
|
{
|
|
#if __WCHAR_MAX__ <= 0xFFFFu
|
|
return length_of_utf16_string((char16_t*)s);
|
|
#else
|
|
return length_of_utf32_string((char32_t*)s);
|
|
#endif
|
|
}
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|