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Diffstat (limited to 'newlib/libc/iconv/lib/local.h')
| -rw-r--r-- | newlib/libc/iconv/lib/local.h | 275 |
1 files changed, 275 insertions, 0 deletions
diff --git a/newlib/libc/iconv/lib/local.h b/newlib/libc/iconv/lib/local.h new file mode 100644 index 000000000..006976511 --- /dev/null +++ b/newlib/libc/iconv/lib/local.h @@ -0,0 +1,275 @@ +#ifndef __LOCAL_H__ +#define __LOCAL_H__ + +#include <_ansi.h> +#include <reent.h> +#include <wchar.h> +#include <sys/types.h> + +#ifndef NLS_ENVVAR_NAME +# define NLS_ENVVAR_NAME "NLSPATH" +#endif +#ifndef NLS_DEFAULT_NLSPATH +# define NLS_DEFAULT_NLSPATH "/usr/locale/" +#endif + +/* void* type for K&R compilers compatability */ +#define _VOID_PTR _PTR + +/* Charset aliases file */ +#define ICONV_ALIASES_FNAME "charset.aliases" +/* iconv CCS data path */ +#define ICONV_DATA_PATH NLS_DEFAULT_NLSPATH"iconv_data/" +/* iconv data files extention */ +#define ICONV_DATA_EXT ".cct" + +/* Unicode character data types and constants. */ +#define UCS_CHAR_ZERO_WIDTH_NBSP 0xFEFF +#define UCS_CHAR_INVALID 0xFFFE +#define UCS_CHAR_NONE 0xFFFF + +typedef __uint16_t ucs2_t; /* Unicode character [D5] */ +typedef __uint32_t ucs4_t; /* Unicode scalar character [D28] */ +#define ucs_t ucs4_t + +#define iconv_char32bit(ch) ((ch) & 0xFFFF0000) + +/* CCS file descriptor */ +typedef struct +{ + void *mem; + size_t len; +} _iconv_fd_t; + +char * +_EXFUN(_iconv_resolve_cs_name, (struct _reent *, _CONST char *, _CONST char *)); + +char * +_EXFUN(_iconv_resolve_alias, (struct _reent *, _CONST char *, _CONST char *, + int, _CONST char *)); + +int +_EXFUN(_iconv_load_file, (struct _reent *, _CONST char *, _iconv_fd_t *)); + +int +_EXFUN(_iconv_unload_file, (struct _reent *, _iconv_fd_t *)); + +/* Builtin CCS and CES data. */ +typedef struct { + _CONST char *key; + _CONST _VOID_PTR value; +} iconv_builtin_table; + +extern _CONST iconv_builtin_table iconv_builtin_ccs[]; +extern _CONST iconv_builtin_table iconv_builtin_ces[]; +extern _CONST char iconv_builtin_aliases[]; + +/* Table-driven coded character set (CCS) definitions. */ +struct iconv_ccs; + +/* Basic CCS functions */ +typedef ucs2_t +_EXFUN(iconv_ccs_convert_t, (_CONST _VOID_PTR table, ucs2_t ch)); + +typedef int +_EXFUN(iconv_ccs_close_t, (struct _reent *rptr, struct iconv_ccs *desc)); + +/* CCS structure */ +struct iconv_ccs { + _CONST _VOID_PTR from_ucs; /* FROM table pointer */ + _CONST _VOID_PTR to_ucs; /* TO table pointer */ + iconv_ccs_convert_t *convert_from_ucs; /* converter */ + iconv_ccs_convert_t *convert_to_ucs; /* functions */ + iconv_ccs_close_t *close; /* close function */ + _VOID_PTR extra; /* optional extra data */ + unsigned int nbits; /* number of bits */ +}; + +/* CCS initialisation function */ +int +_EXFUN(iconv_ccs_init, (struct _reent *rptr, struct iconv_ccs *ccs, + _CONST char *name)); + +/* CCS conversion macros */ +#define ICONV_CCS_CONVERT_FROM_UCS(ccs, ch) \ + ((ccs)->convert_from_ucs((ccs)->from_ucs, (ch))) +#define ICONV_CCS_CONVERT_TO_UCS(ccs, ch) \ + ((ccs)->convert_to_ucs((ccs)->to_ucs, (ch))) +#define ICONV_CCS_NBITS + +/* Module-driven character encoding scheme (CES) definitions */ +struct iconv_ces; + +/* Basic CES function types */ +typedef int +_EXFUN(iconv_ces_init_t, (struct _reent *, _VOID_PTR *, /* void** */ + _CONST char *, _CONST _VOID_PTR)); + +typedef int +_EXFUN(iconv_ces_close_t, (struct _reent *, _VOID_PTR)); + +typedef _VOID +_EXFUN(iconv_ces_reset_t, (_VOID_PTR)); + +typedef ssize_t +_EXFUN(iconv_ces_convert_from_ucs_t, (struct iconv_ces *data, ucs_t in, + unsigned char **outbuf, + size_t *outbytesleft)); + +typedef ucs_t +_EXFUN(iconv_ces_convert_to_ucs_t, (struct iconv_ces *data, + _CONST unsigned char **inbuf, + size_t *inbytesleft)); + +/* CES descriptor structure - CES class data */ +struct iconv_ces_desc { + iconv_ces_init_t *init; + iconv_ces_close_t *close; /* class-specific close function */ + iconv_ces_reset_t *reset; + iconv_ces_convert_from_ucs_t *convert_from_ucs; + iconv_ces_convert_to_ucs_t *convert_to_ucs; + _CONST _VOID_PTR data; /* optional specific CES class data */ +}; + +/* explicit CES class for table (CCS) driven charsets */ +extern _CONST struct iconv_ces_desc iconv_ces_table_driven; + +/* CES structure - CES instance data */ +struct iconv_ces { + _CONST struct iconv_ces_desc *desc; /* descriptor/class pointer */ + iconv_ces_close_t *close; /* instance-specific close function */ + _VOID_PTR data; /* optional extra data */ + _VOID_PTR handle; /* optional handle */ +}; + +/* Basic CES functions and macros */ +extern int +_EXFUN(iconv_ces_init, (struct _reent *rptr, struct iconv_ces *ces, + _CONST char *name)); + +#define ICONV_CES_CLOSE(rptr, ces) ((ces)->close(rptr, ces)) +#define ICONV_CES_RESET(ces) ((ces)->desc->reset((ces)->data)) +#define ICONV_CES_CONVERT_FROM_UCS(cesd, in, outbuf, outbytes) \ + ((cesd)->desc->convert_from_ucs((cesd), (in), (outbuf), (outbytes))) +#define ICONV_CES_CONVERT_TO_UCS(cesd, inbuf, inbytes) \ + ((cesd)->desc->convert_to_ucs((cesd), (inbuf), (inbytes))) + +/* Virtual CES initialisation function type */ +typedef int +_EXFUN(iconv_ces_init_int_t, (struct _reent *rptr, _VOID_PTR* /* void ** */, + _CONST _VOID_PTR, size_t)); + +/* CES subclass macros (for EUC and ISO-2022) */ +#define ICONV_CES_DRIVER_DECL(name) \ + iconv_ces_init_int_t iconv_##name##_init; \ + iconv_ces_close_t iconv_##name##_close; \ + iconv_ces_reset_t iconv_##name##_reset; \ + iconv_ces_convert_from_ucs_t iconv_##name##_convert_from_ucs; \ + iconv_ces_convert_to_ucs_t iconv_##name##_convert_to_ucs; \ + +/* CES functions and macros for stateless encodings */ +iconv_ces_init_t iconv_ces_init_null; +iconv_ces_close_t iconv_ces_close_null; +iconv_ces_reset_t iconv_ces_reset_null; + +#define ICONV_CES_STATELESS_MODULE_DECL(name) \ + _CONST struct iconv_ces_desc iconv_ces_##name = { \ + iconv_ces_init_null, \ + iconv_ces_close_null, \ + iconv_ces_reset_null, \ + convert_from_ucs, \ + convert_to_ucs, \ + NULL \ + } + +/* CES functions and macros for stateful (integer state) encodings */ +iconv_ces_init_t iconv_ces_init_state; +iconv_ces_close_t iconv_ces_close_state; +iconv_ces_reset_t iconv_ces_reset_state; + +#define ICONV_CES_STATEFUL_MODULE_DECL(name) \ + _CONST struct iconv_ces_desc iconv_ces_##name = { \ + iconv_ces_init_state, \ + iconv_ces_close_state, \ + iconv_ces_reset_state, \ + convert_from_ucs, \ + convert_to_ucs, \ + NULL \ + } + +/* CES functions and macros for other encodings */ +#define ICONV_CES_MODULE_DECL(type, name) \ + static int \ + module_init(struct _reent *rptr, _VOID_PTR *data, /* void ** */ \ + _CONST char *cs_name, _CONST _VOID_PTR desc_data) \ + { \ + return iconv_##type##_init(rptr, data, desc_data, \ + sizeof(ccsattr) / \ + sizeof(iconv_ces_##type##_ccs)); \ + } \ + \ + _CONST struct iconv_ces_desc iconv_ces_##name = { \ + module_init, \ + iconv_##type##_close, \ + iconv_##type##_reset, \ + iconv_##type##_convert_from_ucs, \ + iconv_##type##_convert_to_ucs, \ + &ccsattr \ + } + +/* EUC character encoding schemes and functions */ +typedef struct { + _CONST char *name; + _CONST char *prefix; + size_t prefixlen; +} iconv_ces_euc_ccs; + +ICONV_CES_DRIVER_DECL(euc); +#define iconv_euc_reset iconv_ces_reset_null + +/* ISO-2022 character encoding schemes and functions. */ +enum {ICONV_SHIFT_SI = 0, ICONV_SHIFT_SO, ICONV_SHIFT_SS2, ICONV_SHIFT_SS3}; + +typedef struct { + _CONST char *name; + _CONST char *designator; + size_t designatorlen; + int shift; +} iconv_ces_iso2022_ccs; + +ICONV_CES_DRIVER_DECL(iso2022); + + +/* Converter structure and functions. */ +typedef size_t +_EXFUN(iconv_conv_t, (struct _reent *, _VOID_PTR, _CONST unsigned char **, + size_t *, unsigned char **, size_t *)); + +typedef int +_EXFUN(iconv_close_t, (struct _reent *rptr, _VOID_PTR)); + +/* Generic converter structure. */ +typedef struct { + iconv_conv_t *convert; + iconv_close_t *close; +}iconv_converter; + + +typedef struct { + struct iconv_ces from; + struct iconv_ces to; + ucs_t missing; +} unicode_converter; + + +/* Converter initialisers */ +iconv_converter * +_EXFUN(iconv_unicode_conv_init, (struct _reent *rptr, _CONST char *to, + _CONST char *from)); + +iconv_converter * +_EXFUN(iconv_null_conv_init, (struct _reent *rptr, _CONST char *to, + _CONST char *from)); + +#endif /* __LOCAL_H__ */ + |