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/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2000-2002 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
#ifndef APR_XLATE_H
#define APR_XLATE_H
#include "apr.h"
#include "apr_pools.h"
#include "apr_errno.h"
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/**
* @file apr_xlate.h
* @brief APR I18N translation library
*/
/**
* @defgroup APR_I18N I18N translation library
* @ingroup APR
* @{
*/
/**
* APR_HAS_XLATE determines whether or not useful implementations of
* apr_xlate_open() et al are provided.
*
* If APR_HAS_XLATE is zero, apr_xlate_open() et al will all return
* APR_ENOTIMPL at run-time.
*/
#if APR_HAS_XLATE
typedef struct apr_xlate_t apr_xlate_t;
/**
* Set up for converting text from one charset to another.
* @param convset The handle to be filled in by this function
* @param topage The name of the target charset
* @param frompage The name of the source charset
* @param pool The pool to use
* @remark
* Specify APR_DEFAULT_CHARSET for one of the charset
* names to indicate the charset of the source code at
* compile time. This is useful if there are literal
* strings in the source code which must be translated
* according to the charset of the source code.
* APR_DEFAULT_CHARSET is not useful if the source code
* of the caller was not encoded in the same charset as
* APR at compile time.
*
* @remark
* Specify APR_LOCALE_CHARSET for one of the charset
* names to indicate the charset of the current locale.
* </PRE>
*/
APR_DECLARE(apr_status_t) apr_xlate_open(apr_xlate_t **convset,
const char *topage,
const char *frompage,
apr_pool_t *pool);
/**
* This is to indicate the charset of the sourcecode at compile time
* names to indicate the charset of the source code at
* compile time. This is useful if there are literal
* strings in the source code which must be translated
* according to the charset of the source code.
*/
#define APR_DEFAULT_CHARSET (const char *)0
/**
* To indicate charset names of the current locale
*/
#define APR_LOCALE_CHARSET (const char *)1
/**
* Find out whether or not the specified conversion is single-byte-only.
* @param convset The handle allocated by apr_xlate_open, specifying the
* parameters of conversion
* @param onoff Output: whether or not the conversion is single-byte-only
*/
APR_DECLARE(apr_status_t) apr_xlate_get_sb(apr_xlate_t *convset, int *onoff);
/**
* Convert a buffer of text from one codepage to another.
* @param convset The handle allocated by apr_xlate_open, specifying
* the parameters of conversion
* @param inbuf The address of the source buffer
* @param inbytes_left Input: the amount of input data to be translated
* Output: the amount of input data not yet translated
* @param outbuf The address of the destination buffer
* @param outbytes_left Input: the size of the output buffer
* Output: the amount of the output buffer not yet used
*/
APR_DECLARE(apr_status_t) apr_xlate_conv_buffer(apr_xlate_t *convset,
const char *inbuf,
apr_size_t *inbytes_left,
char *outbuf,
apr_size_t *outbytes_left);
/* @see apr_file_io.h the comment in apr_file_io.h about this hack */
#ifdef APR_NOT_DONE_YET
/**
* The purpose of apr_xlate_conv_char is to translate one character
* at a time. This needs to be written carefully so that it works
* with double-byte character sets.
* @param convset The handle allocated by apr_xlate_open, specifying the
* parameters of conversion
* @param inchar The character to convert
* @param outchar The converted character
*/
APR_DECLARE(apr_status_t) apr_xlate_conv_char(apr_xlate_t *convset,
char inchar, char outchar);
#endif
/**
* Convert a single-byte character from one charset to another.
* @param convset The handle allocated by apr_xlate_open, specifying the
* parameters of conversion
* @param inchar The single-byte character to convert.
* @warning This only works when converting between single-byte character sets.
* -1 will be returned if the conversion can't be performed.
*/
APR_DECLARE(apr_int32_t) apr_xlate_conv_byte(apr_xlate_t *convset,
unsigned char inchar);
/**
* Close a codepage translation handle.
* @param convset The codepage translation handle to close
*/
APR_DECLARE(apr_status_t) apr_xlate_close(apr_xlate_t *convset);
#else
/**
* handle for the Translation routines
* (currently not implemented)
*/
typedef void apr_xlate_t;
/**
* For platforms where we don't bother with translating between charsets,
* these are macros which always return failure.
*/
#define apr_xlate_open(convset, topage, frompage, pool) APR_ENOTIMPL
#define apr_xlate_get_sb(convset, onoff) APR_ENOTIMPL
#define apr_xlate_conv_buffer(convset, inbuf, inbytes_left, outbuf, \
outbytes_left) APR_ENOTIMPL
#define apr_xlate_conv_byte(convset, inchar) (-1)
/**
* The purpose of apr_xlate_conv_char is to translate one character
* at a time. This needs to be written carefully so that it works
* with double-byte character sets.
*/
#define apr_xlate_conv_char(convset, inchar, outchar) APR_ENOTIMPL
#define apr_xlate_close(convset) APR_ENOTIMPL
#endif /* ! APR_HAS_XLATE */
/** @} */
#ifdef __cplusplus
}
#endif
#endif /* ! APR_XLATE_H */
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