axmol/cocos/2d/ccUTF8.h

90 lines
2.9 KiB
C++

//
// ccUTF8.h
// cocos2dx
//
// Created by James Chen on 2/27/13.
//
#ifndef __cocos2dx__ccUTF8__
#define __cocos2dx__ccUTF8__
#include "CCPlatformMacros.h"
#include <vector>
NS_CC_BEGIN
CC_DLL int cc_wcslen(const unsigned short* str);
CC_DLL void cc_utf8_trim_ws(std::vector<unsigned short>* str);
/**
* Whether the character is a whitespace character.
*
* @param ch the unicode character
* @returns whether the character is a white space character.
*
* @see http://en.wikipedia.org/wiki/Whitespace_character#Unicode
* */
CC_DLL bool isspace_unicode(unsigned short ch);
/**
* Returns the length of the string in characters.
*
* @param p pointer to the start of a UTF-8 encoded string.
* @param max the maximum number of bytes to examine. If \p max is less than
* 0, then the string is assumed to be null-terminated. If \p max
* is 0, \p p will not be examined and my be %nullptr.
*
* @returns the length of the string in characters
**/
CC_DLL long
cc_utf8_strlen (const char * p, int max);
/**
* Find the last character that is not equal to the character given.
*
* @param str the string to be searched.
* @param c the character to be searched for.
*
* @returns the index of the last character that is not \p c.
* */
CC_DLL unsigned int cc_utf8_find_last_not_char(std::vector<unsigned short> str, unsigned short c);
CC_DLL std::vector<unsigned short> cc_utf16_vec_from_utf16_str(const unsigned short* str);
/**
* Creates a utf8 string from a cstring.
*
* @param str_old pointer to the start of a C string.
*
* @returns the newly created utf8 string.
* */
CC_DLL unsigned short* cc_utf8_to_utf16(const char* str_old, int length = -1, int* rUtf16Size = nullptr);
/**
* Convert a string from UTF-16 to UTF-8. The result will be null terminated.
*
* @param str a UTF-16 encoded string
* @param len the maximum length of \p str to use. If \p len < 0, then the
* string is null terminated.
* @param items_read location to store number of words read, or %nullptr.
* If %nullptr, then %G_CONVERT_ERROR_PARTIAL_INPUT will be
* returned in case \p str contains a trailing partial
* character. If an error occurs then the index of the
* invalid input is stored here.
* @param items_written location to store number of bytes written, or %nullptr.
* The value stored here does not include the trailing null.
*
* @returns a pointer to a newly allocated UTF-8 string. This value must be
* freed with free(). If an error occurs, %nullptr will be returned.
**/
CC_DLL char *
cc_utf16_to_utf8 (const unsigned short *str,
int len,
long *items_read,
long *items_written);
NS_CC_END
#endif /* defined(__cocos2dx__ccUTF8__) */