mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-21 10:20:06 +00:00
e3e0a182a7
1998-05-15 21:07 Ulrich Drepper <drepper@cygnus.com> * iconv/gconv.h (gconv_step_data): Add new fields invocation_counter and internal_use. * iconv/gconv_open.c (__gconv_open): Initialize invocation_counter and internal_use. * iconv/skeleton.c: Increment invocation_counter. * iconvdata/iso-2022-kr.c: When used in iconv() emit designator sequence first. * iconv/skeleton.c (FROM_DIRECTION): Completely embrace expression. * iconvdata/iso-2022-jp.c: Likewise. * iconvdata/iso646.c: Likewise. * iconvdata/Makefile: Correct rpath definition for ISO-2022-KR.
129 lines
3.5 KiB
C
129 lines
3.5 KiB
C
/* Copyright (C) 1997, 1998 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 Library General Public License as
|
|
published by the Free Software Foundation; either version 2 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.
|
|
|
|
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. */
|
|
|
|
/* 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 <wchar.h>
|
|
#define __need_size_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
|
|
};
|
|
|
|
|
|
/* Forward declarations. */
|
|
struct gconv_step;
|
|
struct gconv_step_data;
|
|
struct gconv_loaded_object;
|
|
|
|
|
|
/* Type of a conversion function. */
|
|
typedef int (*gconv_fct) __P ((struct gconv_step *,
|
|
struct gconv_step_data *, __const char **,
|
|
__const char *, size_t *, int));
|
|
|
|
/* Constructor and destructor for local data for conversion step. */
|
|
typedef int (*gconv_init_fct) __P ((struct gconv_step *));
|
|
typedef void (*gconv_end_fct) __P ((struct gconv_step *));
|
|
|
|
|
|
/* Description of a conversion step. */
|
|
struct gconv_step
|
|
{
|
|
struct gconv_loaded_object *shlib_handle;
|
|
const char *modname;
|
|
|
|
int counter;
|
|
|
|
__const char *from_name;
|
|
__const 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
|
|
{
|
|
char *outbuf; /* Output buffer for this step. */
|
|
char *outbufend; /* Address of first byte after the output buffer. */
|
|
|
|
/* Is this the last module in the chain. */
|
|
int is_last;
|
|
|
|
/* Counter for number of invocations of the module function for this
|
|
desriptor. */
|
|
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 should not be used directly by
|
|
any module; always use STATEP! */
|
|
};
|
|
|
|
|
|
/* Combine conversion step description with data. */
|
|
typedef struct gconv_info
|
|
{
|
|
size_t nsteps;
|
|
struct gconv_step *steps;
|
|
struct gconv_step_data *data;
|
|
} *gconv_t;
|
|
|
|
#endif /* gconv.h */
|