-/* Copyright (C) 1997 Free Software Foundation, Inc.
+/* Copyright (C) 1997-2013 Free Software Foundation, Inc.
This file is part of the GNU C Library.
- Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
+ 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
- Library General Public License for more details.
+ Lesser General Public License for more details.
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+/* 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>
-#include <sys/types.h>
-#include <regex.h>
+#define __need_mbstate_t
+#define __need_wint_t
+#include <wchar.h>
+#define __need_size_t
+#define __need_wchar_t
+#include <stddef.h>
-__BEGIN_DECLS
+/* 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
+ __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
};
-/* Structure for alias definition. Simply to strings. */
-struct gconv_alias
+/* Flags the `__gconv_open' function can set. */
+enum
{
- __const char *fromname;
- __const char *toname;
+ __GCONV_IS_LAST = 0x0001,
+ __GCONV_IGNORE_ERRORS = 0x0002,
+ __GCONV_SWAP = 0x0004
};
-/* Default size of intermediate buffers. */
-#define GCONV_DEFAULT_BUFSIZE 8160
-
-
/* Forward declarations. */
-struct gconv_step;
-struct gconv_step_data;
+struct __gconv_step;
+struct __gconv_step_data;
+struct __gconv_loaded_object;
+struct __gconv_trans_data;
/* Type of a conversion function. */
-typedef int (*gconv_fct) __P ((struct gconv_step *,
- struct gconv_step_data *,
- __const char *, size_t *, size_t *, int));
-
-/* Constructor and destructor for local data for conversion step. */
-typedef int (*gconv_init_fct) __P ((struct gconv_step *,
- struct gconv_step_data *));
-typedef void (*gconv_end_fct) __P ((struct gconv_step_data *));
-
-
-/* Description of a conversion step. */
-struct gconv_step
-{
- void *shlib_handle;
+typedef int (*__gconv_fct) (struct __gconv_step *, struct __gconv_step_data *,
+ const unsigned char **, const unsigned char *,
+ unsigned char **, size_t *, int, int);
- __const char *from_name;
- __const char *to_name;
+/* Type of a specialized conversion function for a single byte to INTERNAL. */
+typedef wint_t (*__gconv_btowc_fct) (struct __gconv_step *, unsigned char);
- gconv_fct fct;
- gconv_init_fct init_fct;
- gconv_end_fct end_fct;
-};
+/* 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 *);
-/* Additional data for steps in use of conversion descriptor. This is
- allocated by the `init' function. */
-struct gconv_step_data
-{
- char *outbuf; /* Output buffer for this step. */
- size_t outbufavail; /* Bytes already available in output buffer. */
- size_t outbufsize; /* Size of output buffer. */
- int is_last;
+/* 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 *);
- void *data; /* Pointer to step-local data. */
-};
+/* 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 *);
-/* Combine conversion step description with data. */
-typedef struct gconv_info
-{
- size_t nsteps;
- struct gconv_step *steps;
- struct gconv_step_data *data;
-} *gconv_t;
+/* 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 *);
-/* Description for an available conversion module. */
-struct gconv_module
+struct __gconv_trans_data
{
- __const char *from_pattern;
- __const char *from_constpfx;
- size_t from_constpfx_len;
- __const regex_t *from_regex;
-
- __const char *to_string;
-
- int cost;
-
- __const char *module_name;
+ /* 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;
};
-/* Global variables. */
-
-/* Database of alias names. */
-extern void *__gconv_alias_db;
-
-/* Array with available modules. */
-extern size_t __gconv_nmodules;
-extern struct gconv_module **__gconv_modules_db;
-
-
-/* Return in *HANDLE decriptor for transformation from FROMSET to TOSET. */
-extern int __gconv_open __P ((__const char *__toset, __const char *__fromset,
- gconv_t *__handle));
-
-/* Free resources associated with transformation descriptor CD. */
-extern int __gconv_close __P ((gconv_t cd));
-
-/* Transform at most *INBYTESLEFT bytes from buffer starting at *INBUF
- according to rules described by CD and place up to *OUTBYTESLEFT
- bytes in buffer starting at *OUTBUF. Return number of written
- characters in *CONVERTED if this pointer is not null. */
-extern int __gconv __P ((gconv_t __cd,
- __const char **__inbuf, size_t *__inbytesleft,
- char **__outbuf, size_t *__outbytesleft,
- size_t *__converted));
-
-/* Return in *HANDLE a pointer to an array with *NSTEPS elements describing
- the single steps necessary for transformation from FROMSET to TOSET. */
-extern int __gconv_find_transform __P ((__const char *__toset,
- __const char *__fromset,
- struct gconv_step **__handle,
- size_t *__nsteps));
-
-/* Read all the configuration data and cache it. */
-extern void __gconv_read_conf __P ((void));
+/* Description of a conversion step. */
+struct __gconv_step
+{
+ struct __gconv_loaded_object *__shlib_handle;
+ const char *__modname;
-/* Comparison function to search alias. */
-extern int __gconv_alias_compare __P ((__const void *__p1,
- __const void *__p2));
+ int __counter;
-/* Clear reference to transformation step implementations which might
- cause the code to be unloaded. */
-extern int __gconv_close_transform __P ((struct gconv_step *__steps,
- size_t __nsteps));
+ char *__from_name;
+ char *__to_name;
+ __gconv_fct __fct;
+ __gconv_btowc_fct __btowc_fct;
+ __gconv_init_fct __init_fct;
+ __gconv_end_fct __end_fct;
-/* Find in the shared object associated with HANDLE for a function with
- name NAME. Return function pointer or NULL. */
-extern void *__gconv_find_func __P ((void *__handle, __const char *__name));
+ /* 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;
-/* Load shared object named by NAME. If already loaded increment reference
- count. */
-extern void *__gconv_find_shlib __P ((__const char *__name));
+ /* Flag whether this is a stateful encoding or not. */
+ int __stateful;
-/* Release shared object. If no further reference is available unload
- the object. */
-extern int __gconv_release_shlib __P ((void *__handle));
+ void *__data; /* Pointer to step-local data. */
+};
-/* Fill STEP with information about builtin module with NAME. */
-extern void __gconv_get_builtin_trans __P ((__const char *__name,
- struct gconv_step *__step));
+/* 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;
-/* Builtin transformations. */
-#ifdef _LIBC
-# define __BUILTIN_TRANS(Name) \
- extern int Name __P ((struct gconv_step *__step, \
- struct gconv_step_data *__data, __const char *__inbuf,\
- size_t *__inlen, size_t *__written, int __do_flush))
+ /* 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;
-__BUILTIN_TRANS (__gconv_transform_dummy);
-__BUILTIN_TRANS (__gconv_transform_ucs4_utf8);
-__BUILTIN_TRANS (__gconv_transform_utf8_ucs4);
-# undef __BUITLIN_TRANS
+ __mbstate_t *__statep;
+ __mbstate_t __state; /* This element must not be used directly by
+ any module; always use STATEP! */
-extern int __gconv_transform_init_rstate __P ((struct gconv_step *__step,
- struct gconv_step_data *__data));
-extern void __gconv_transform_end_rstate __P ((struct gconv_step_data *__data));
+ /* Transliteration information. */
+ struct __gconv_trans_data *__trans;
+};
-#endif
-__END_DECLS
+/* 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 */
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