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2024-02-07 20:59:24 +08:00
#ifndef DYNSJIS_H
#define DYNSJIS_H
// dynsjis.h
// 6/11/2015 jichi
namespace dynsjis {
inline bool isleadbyte(unsigned char ch)
{ return ch > 127 && (ch < 0xa1 || ch > 0xdf); }
inline bool isleadchar(unsigned int ch)
{ return isleadbyte((ch >> 8) & 0xff); }
const char *nextchar(const char *s);
inline char *nextchar(char *s)
{ return const_cast<char *>(nextchar(static_cast<const char *>(s))); }
inline bool isleadstr(const char *s) // return true if the first character of the string is widechar
{ return nextchar(s) - s == 2; }
const char *prevchar(const char *s, const char *begin = nullptr);
inline char *prevchar(char *s, const char *begin = nullptr)
{ return const_cast<char *>(prevchar(static_cast<const char *>(s), begin)); }
} // namespace dynsjis
#endif // DYNSJIS_H