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- #ifndef UTFH
- #define UTFH
- /*
- * utf and utfio
- */
- typedef unsigned char byte;
- enum {
- utfbytes=4,
- utfeof=-1,
- ucbsize=512,
- utfbsize=utfbytes*ucbsize
- };
- extern byte utf8buff[utfbsize]; /* general purpose buffer for utf8 sequences */
- extern int ucbuff[ucbsize]; /* general purpose buffer for unicode sequences */
- int convnutf(byte *, int *, int);
- int convnucode(int, byte *, int);
- int utf8nstring(int*, byte*, unsigned int);
- int ucodenstring(byte *, int*, unsigned int);
- #define utf8(u) (utf8nstring(u,utf8buff,utfbsize),utf8buff)
- #define ucode(b) (ucodenstring(b,ucbuff,ucbsize),ucbuff)
- #define convutf(p,z) convnutf(p,z,utfbytes)
- #define convucode(p,z) convnucode(p,z,utfbytes)
- /*
- * escaped chars
- *
- */
- enum {
- ESC=(1 << ((8*utfbytes)-1)), /* 0x80000000 */
- UNESC=~ESC,
- };
- #define escape(c) ((c)|ESC)
- #define escaped(c) ((c)&ESC)
- #define unescape(c) ((c)&UNESC)
- #endif
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