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/**********************************************************************
transcode_data.h -
$Author: nobu $
created at: Mon 10 Dec 2007 14:01:47 JST 2007
Copyright (C) 2007 Martin Duerst
**********************************************************************/
#ifndef RUBY_TRANSCODE_DATA_H
#define RUBY_TRANSCODE_DATA_H 1
#ifdef __cplusplus
extern "C" {
#endif
#if defined __GNUC__ && __GNUC__ >= 4
#pragma GCC visibility push(default)
#endif
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <inttypes.h>
#define WORDINDEX_SHIFT_BITS 2
#define WORDINDEX2INFO(widx) ((widx) << WORDINDEX_SHIFT_BITS)
#define INFO2WORDINDEX(info) ((info) >> WORDINDEX_SHIFT_BITS)
#define BYTE_LOOKUP_BASE(bl) ((bl)[0])
#define BYTE_LOOKUP_INFO(bl) ((bl)[1])
#define PType (unsigned int)
#define NOMAP (PType 0x01) /* direct map */
#define ONEbt (0x02) /* one byte payload */
#define TWObt (0x03) /* two bytes payload */
#define THREEbt (0x05) /* three bytes payload */
#define FOURbt (0x06) /* four bytes payload, UTF-8 only, macros start at getBT0 */
#define INVALID (PType 0x07) /* invalid byte sequence */
#define UNDEF (PType 0x09) /* legal but undefined */
#define ZERObt (PType 0x0A) /* zero bytes of payload, i.e. remove */
#define FUNii (PType 0x0B) /* function from info to info */
#define FUNsi (PType 0x0D) /* function from start to info */
#define FUNio (PType 0x0E) /* function from info to output */
#define FUNso (PType 0x0F) /* function from start to output */
#define STR1 (PType 0x11) /* string 4 <= len <= 259 bytes: 1byte length + content */
#define GB4bt (PType 0x12) /* GB18030 four bytes payload */
#define FUNsio (PType 0x13) /* function from start and info to output */
#define STR1_LENGTH(byte_addr) (unsigned int)(*(byte_addr) + 4)
#define STR1_BYTEINDEX(w) ((w) >> 6)
#define makeSTR1(bi) (((bi) << 6) | STR1)
#define makeSTR1LEN(len) ((len)-4)
#define o1(b1) (PType((((unsigned char)(b1))<<8)|ONEbt))
#define o2(b1,b2) (PType((((unsigned char)(b1))<<8)|(((unsigned char)(b2))<<16)|TWObt))
#define o3(b1,b2,b3) (PType(((((unsigned char)(b1))<<8)|(((unsigned char)(b2))<<16)|(((unsigned int)(unsigned char)(b3))<<24)|THREEbt)&0xffffffffU))
#define o4(b0,b1,b2,b3) (PType(((((unsigned char)(b1))<<8)|(((unsigned char)(b2))<<16)|(((unsigned char)(b3))<<24)|((((unsigned char)(b0))&0x07)<<5)|FOURbt)&0xffffffffU))
#define g4(b0,b1,b2,b3) (PType(((((unsigned char)(b0))<<8)|(((unsigned char)(b2))<<16)|((((unsigned char)(b1))&0x0f)<<24)|((((unsigned int)(unsigned char)(b3))&0x0f)<<28)|GB4bt)&0xffffffffU))
#define funsio(diff) (PType((((unsigned int)(diff))<<8)|FUNsio))
#define getBT1(a) ((unsigned char)((a)>> 8))
#define getBT2(a) ((unsigned char)((a)>>16))
#define getBT3(a) ((unsigned char)((a)>>24))
#define getBT0(a) (((unsigned char)((a)>> 5)&0x07)|0xF0) /* for UTF-8 only!!! */
#define getGB4bt0(a) ((unsigned char)((a)>> 8))
#define getGB4bt1(a) (((unsigned char)((a)>>24)&0x0F)|0x30)
#define getGB4bt2(a) ((unsigned char)((a)>>16))
#define getGB4bt3(a) (((unsigned char)((a)>>28)&0x0F)|0x30)
#define o2FUNii(b1,b2) (PType((((unsigned char)(b1))<<8)|(((unsigned char)(b2))<<16)|FUNii))
/* do we need these??? maybe not, can be done with simple tables */
#define ONETRAIL /* legal but undefined if one more trailing UTF-8 */
#define TWOTRAIL /* legal but undefined if two more trailing UTF-8 */
#define THREETRAIL /* legal but undefined if three more trailing UTF-8 */
#define ECONV_ERROR_HANDLER_MASK 0x000000ff
#define ECONV_INVALID_MASK 0x0000000f
#define ECONV_INVALID_REPLACE 0x00000002
#define ECONV_UNDEF_MASK 0x000000f0
#define ECONV_UNDEF_REPLACE 0x00000020
#define ECONV_UNDEF_HEX_CHARREF 0x00000030
#define ECONV_DECORATOR_MASK 0x0000ff00
#define ECONV_NEWLINE_DECORATOR_MASK 0x00003f00
#define ECONV_NEWLINE_DECORATOR_READ_MASK 0x00000f00
#define ECONV_NEWLINE_DECORATOR_WRITE_MASK 0x00003000
#define ECONV_UNIVERSAL_NEWLINE_DECORATOR 0x00000100
#define ECONV_CRLF_NEWLINE_DECORATOR 0x00001000
#define ECONV_CR_NEWLINE_DECORATOR 0x00002000
#define ECONV_XML_TEXT_DECORATOR 0x00004000
#define ECONV_XML_ATTR_CONTENT_DECORATOR 0x00008000
#define ECONV_STATEFUL_DECORATOR_MASK 0x00f00000
#define ECONV_XML_ATTR_QUOTE_DECORATOR 0x00100000
#if defined(_WIN32)
#define ECONV_DEFAULT_NEWLINE_DECORATOR CONVERTER_CRLF_NEWLINE_DECORATOR
#else
#define ECONV_DEFAULT_NEWLINE_DECORATOR 0
#endif
#define ECONV_PARTIAL_INPUT 0x00010000
#define ECONV_AFTER_OUTPUT 0x00020000
typedef enum {
econv_invalid_byte_sequence,
econv_undefined_conversion,
econv_destination_buffer_full,
econv_source_buffer_empty,
econv_finished,
econv_after_output,
econv_incomplete_input
} rb_econv_result_t;
typedef enum {
asciicompat_converter, /* ASCII-compatible -> ASCII-compatible */
asciicompat_decoder, /* ASCII-incompatible -> ASCII-compatible */
asciicompat_encoder /* ASCII-compatible -> ASCII-incompatible */
/* ASCII-incompatible -> ASCII-incompatible is intentionally omitted. */
} rb_transcoder_asciicompat_type_t;
/* static structure, one per supported encoding pair */
struct rb_transcoder {
const char *src_encoding;
const char *dst_encoding;
unsigned int conv_tree_start;
const unsigned char *byte_array;
unsigned int byte_array_length;
const unsigned int *word_array;
unsigned int word_array_length;
int word_size;
int input_unit_length;
int max_input;
int max_output;
rb_transcoder_asciicompat_type_t asciicompat_type;
size_t state_size;
int (*state_init_func)(void*); /* ret==0:success ret!=0:failure(errno) */
int (*state_fini_func)(void*); /* ret==0:success ret!=0:failure(errno) */
unsigned int (*func_ii)(void*, unsigned int); /* info -> info */
unsigned int (*func_si)(void*, const unsigned char*, size_t); /* start -> info */
ssize_t (*func_io)(void*, unsigned int, const unsigned char*, size_t); /* info -> output */
ssize_t (*func_so)(void*, const unsigned char*, size_t, unsigned char*, size_t); /* start -> output */
ssize_t (*finish_func)(void*, unsigned char*, size_t); /* -> output */
ssize_t (*resetsize_func)(void*); /* -> len */
ssize_t (*resetstate_func)(void*, unsigned char*, size_t); /* -> output */
ssize_t (*func_sio)(void*, const unsigned char*, size_t, unsigned int, unsigned char*, size_t); /* start -> output */
};
// TODO: remove
#ifndef VALUE
typedef intptr_t VALUE;
#endif
typedef struct {
struct rb_transcoding *tc;
unsigned char *out_buf_start;
unsigned char *out_data_start;
unsigned char *out_data_end;
unsigned char *out_buf_end;
rb_econv_result_t last_result;
} rb_econv_elem_t;
typedef struct {
const char* destination_encoding_name;
int num_transcoders;
struct rb_transcoder** transcoders;
} rb_econv_replacement_converters;
struct rb_econv_t {
int flags;
const char *source_encoding_name;
const char *destination_encoding_name;
int started;
const unsigned char *replacement_str;
size_t replacement_len;
const char *replacement_enc;
int replacement_allocated;
int num_replacement_converters;
rb_econv_replacement_converters* replacement_converters;
unsigned char *in_buf_start;
unsigned char *in_data_start;
unsigned char *in_data_end;
unsigned char *in_buf_end;
rb_econv_elem_t *elems;
int num_allocated;
int num_trans;
int num_finished;
struct rb_transcoding *last_tc;
/* last error */
struct {
rb_econv_result_t result;
struct rb_transcoding *error_tc;
const char *source_encoding;
const char *destination_encoding;
const unsigned char *error_bytes_start;
size_t error_bytes_len;
size_t readagain_len;
} last_error;
};
typedef struct rb_econv_t rb_econv_t;
typedef struct rb_transcoder rb_transcoder;
typedef struct rb_transcoder OnigTranscodingType;
void rb_declare_transcoder(const char *enc1, const char *enc2, const char *lib);
void rb_register_transcoder(const rb_transcoder *);
rb_econv_t* rb_econv_alloc(int n_hint);
void rb_econv_alloc_replacement_converters(rb_econv_t* ec, int num);
void rb_econv_free(rb_econv_t *ec);
rb_econv_result_t econv_convert(rb_econv_t *ec,
const unsigned char **input_ptr,
const unsigned char *input_stop,
unsigned char **output_ptr,
unsigned char *output_stop,
int flags);
int rb_econv_add_transcoder_at(rb_econv_t *ec, const rb_transcoder *tr, int i);
#if defined __GNUC__ && __GNUC__ >= 4
#pragma GCC visibility pop
#endif
/*
* To get rid of collision of initializer symbols in statically-linked encodings
* and transcoders
*/
#if defined(EXTSTATIC) && EXTSTATIC
# define TRANS_INIT(name) void Init_trans_ ## name(void)
#else
# define TRANS_INIT(name) void Init_ ## name(void)
#endif
#ifdef __cplusplus
}
#endif
#endif /* RUBY_TRANSCODE_DATA_H */
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