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Diffstat (limited to 'newlib/libc/sys/linux/include/gconv.h')
| -rw-r--r-- | newlib/libc/sys/linux/include/gconv.h | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/newlib/libc/sys/linux/include/gconv.h b/newlib/libc/sys/linux/include/gconv.h new file mode 100644 index 000000000..64df45bf5 --- /dev/null +++ b/newlib/libc/sys/linux/include/gconv.h @@ -0,0 +1,175 @@ +/* Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +/* This header provides no interface for a user to the internals of + the gconv implementation in the libc. Therefore there is no use + for these definitions beside for writing additional gconv modules. */ + +#ifndef _GCONV_H +#define _GCONV_H 1 + +#include <features.h> +#define __need_mbstate_t +#include <wchar.h> +#define __need_size_t +#define __need_wchar_t +#include <stddef.h> + +/* ISO 10646 value used to signal invalid value. */ +#define __UNKNOWN_10646_CHAR ((wchar_t) 0xfffd) + +/* Error codes for gconv functions. */ +enum +{ + __GCONV_OK = 0, + __GCONV_NOCONV, + __GCONV_NODB, + __GCONV_NOMEM, + + __GCONV_EMPTY_INPUT, + __GCONV_FULL_OUTPUT, + __GCONV_ILLEGAL_INPUT, + __GCONV_INCOMPLETE_INPUT, + + __GCONV_ILLEGAL_DESCRIPTOR, + __GCONV_INTERNAL_ERROR +}; + + +/* Flags the `__gconv_open' function can set. */ +enum +{ + __GCONV_IS_LAST = 0x0001, + __GCONV_IGNORE_ERRORS = 0x0002 +}; + + +/* Forward declarations. */ +struct __gconv_step; +struct __gconv_step_data; +struct __gconv_loaded_object; +struct __gconv_trans_data; + + +/* Type of a conversion function. */ +typedef int (*__gconv_fct) (struct __gconv_step *, struct __gconv_step_data *, + __const unsigned char **, __const unsigned char *, + unsigned char **, size_t *, int, int); + +/* Constructor and destructor for local data for conversion step. */ +typedef int (*__gconv_init_fct) (struct __gconv_step *); +typedef void (*__gconv_end_fct) (struct __gconv_step *); + + +/* Type of a transliteration/transscription function. */ +typedef int (*__gconv_trans_fct) (struct __gconv_step *, + struct __gconv_step_data *, void *, + __const unsigned char *, + __const unsigned char **, + __const unsigned char *, unsigned char **, + size_t *); + +/* Function to call to provide transliteration module with context. */ +typedef int (*__gconv_trans_context_fct) (void *, __const unsigned char *, + __const unsigned char *, + unsigned char *, unsigned char *); + +/* Function to query module about supported encoded character sets. */ +typedef int (*__gconv_trans_query_fct) (__const char *, __const char ***, + size_t *); + +/* Constructor and destructor for local data for transliteration. */ +typedef int (*__gconv_trans_init_fct) (void **, const char *); +typedef void (*__gconv_trans_end_fct) (void *); + +struct __gconv_trans_data +{ + /* Transliteration/Transscription function. */ + __gconv_trans_fct __trans_fct; + __gconv_trans_context_fct __trans_context_fct; + __gconv_trans_end_fct __trans_end_fct; + void *__data; + struct __gconv_trans_data *__next; +}; + + +/* Description of a conversion step. */ +struct __gconv_step +{ + struct __gconv_loaded_object *__shlib_handle; + __const char *__modname; + + int __counter; + + char *__from_name; + char *__to_name; + + __gconv_fct __fct; + __gconv_init_fct __init_fct; + __gconv_end_fct __end_fct; + + /* Information about the number of bytes needed or produced in this + step. This helps optimizing the buffer sizes. */ + int __min_needed_from; + int __max_needed_from; + int __min_needed_to; + int __max_needed_to; + + /* Flag whether this is a stateful encoding or not. */ + int __stateful; + + void *__data; /* Pointer to step-local data. */ +}; + +/* Additional data for steps in use of conversion descriptor. This is + allocated by the `init' function. */ +struct __gconv_step_data +{ + unsigned char *__outbuf; /* Output buffer for this step. */ + unsigned char *__outbufend; /* Address of first byte after the output + buffer. */ + + /* Is this the last module in the chain. */ + int __flags; + + /* Counter for number of invocations of the module function for this + descriptor. */ + int __invocation_counter; + + /* Flag whether this is an internal use of the module (in the mb*towc* + and wc*tomb* functions) or regular with iconv(3). */ + int __internal_use; + + mbstate_t *__statep; + mbstate_t __state; /* This element must not be used directly by + any module; always use STATEP! */ + + /* Transliteration information. */ + struct __gconv_trans_data *__trans; +}; + + +/* Combine conversion step description with data. */ +typedef struct __gconv_info +{ + size_t __nsteps; + struct __gconv_step *__steps; + __extension__ struct __gconv_step_data __data __flexarr; +} *__gconv_t; + +#endif /* gconv.h */ |