root/ext/json/ext/parser/unicode.h

/* */

INCLUDED FROM

DEFINITIONS

1. conversionOK
2. sourceExhausted
3. targetExhausted
4. sourceIllegal
5. ConversionResult
6. strictConversion
7. lenientConversion
8. ConversionFlags

#ifndef _PARSER_UNICODE_H_
#define _PARSER_UNICODE_H_

#include "ruby.h"

typedef unsigned long   UTF32;  /* at least 32 bits */
typedef unsigned short  UTF16;  /* at least 16 bits */
typedef unsigned char   UTF8;   /* typically 8 bits */

#define UNI_REPLACEMENT_CHAR (UTF32)0x0000FFFD
#define UNI_MAX_BMP (UTF32)0x0000FFFF
#define UNI_MAX_UTF16 (UTF32)0x0010FFFF
#define UNI_MAX_UTF32 (UTF32)0x7FFFFFFF
#define UNI_MAX_LEGAL_UTF32 (UTF32)0x0010FFFF

#define UNI_SUR_HIGH_START  (UTF32)0xD800
#define UNI_SUR_HIGH_END    (UTF32)0xDBFF
#define UNI_SUR_LOW_START   (UTF32)0xDC00
#define UNI_SUR_LOW_END     (UTF32)0xDFFF

static const int halfShift  = 10; /* used for shifting by 10 bits */

static const UTF32 halfBase = 0x0010000UL;
static const UTF32 halfMask = 0x3FFUL;

typedef enum {
        conversionOK = 0,       /* conversion successful */
        sourceExhausted,        /* partial character in source, but hit end */
        targetExhausted,        /* insuff. room in target for conversion */
        sourceIllegal           /* source sequence is illegal/malformed */
} ConversionResult;

typedef enum {
        strictConversion = 0,
        lenientConversion
} ConversionFlags;

char *JSON_convert_UTF16_to_UTF8 (
    VALUE buffer,
    char *source,
    char *sourceEnd,
                ConversionFlags flags);

#ifndef RARRAY_PTR
#define RARRAY_PTR(ARRAY) RARRAY(ARRAY)->ptr
#endif
#ifndef RARRAY_LEN
#define RARRAY_LEN(ARRAY) RARRAY(ARRAY)->len
#endif
#ifndef RSTRING_PTR
#define RSTRING_PTR(string) RSTRING(string)->ptr
#endif
#ifndef RSTRING_LEN
#define RSTRING_LEN(string) RSTRING(string)->len
#endif

#endif

/*

*/