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/*
Basic UTF-8 manipulation routines
by Jeff Bezanson
placed in the public domain Fall 2005
This code is designed to provide the utilities you need to manipulate
UTF-8 as an internal string encoding. These functions do not perform the
error checking normally needed when handling UTF-8 data, so if you happen
to be from the Unicode Consortium you will want to flay me alive.
I do this because error checking can be performed at the boundaries (I/O),
with these routines reserved for higher performance on data known to be
valid.
*/
// Further modified, and C++ stuff added, by hrydgard@gmail.com.
#pragma once
#include "common/common_types.h"
#include <string>
u32 u8_nextchar(const char *s, int *i);
int u8_wc_toutf8(char *dest, u32 ch);
int u8_strlen(const char *s);
class UTF8 {
public:
static const u32 INVALID = (u32)-1;
UTF8(const char *c) : c_(c), index_(0) {}
bool end() const { return c_[index_] == 0; }
u32 next() {
return u8_nextchar(c_, &index_);
}
u32 peek() {
int tempIndex = index_;
return u8_nextchar(c_, &tempIndex);
}
int length() const {
return u8_strlen(c_);
}
int byteIndex() const {
return index_;
}
static int encode(char *dest, u32 ch) {
return u8_wc_toutf8(dest, ch);
}
private:
const char *c_;
int index_;
};
int UTF8StringNonASCIICount(const char *utf8string);
bool UTF8StringHasNonASCII(const char *utf8string);
// UTF8 to Win32 UTF-16
// Should be used when calling Win32 api calls
#ifdef _WIN32
std::string ConvertWStringToUTF8(const std::wstring &wstr);
std::string ConvertWStringToUTF8(const wchar_t *wstr);
void ConvertUTF8ToWString(wchar_t *dest, size_t destSize, const std::string &source);
std::wstring ConvertUTF8ToWString(const std::string &source);
#endif
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