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/* This file is part of the YAZ toolkit.
* Copyright (C) Index Data.
* All rights reserved.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Index Data nor the names of its contributors
* may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
* EXPRESS 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 REGENTS AND 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.
*/
/**
* \file wrbuf.h
* \brief Header for WRBUF (growing buffer)
*/
#ifndef WRBUF_H
#define WRBUF_H
#include <yaz/xmalloc.h>
#include <yaz/yaz-iconv.h>
YAZ_BEGIN_CDECL
/** \brief string buffer */
typedef struct wrbuf
{
char *buf;
size_t pos;
size_t size;
} wrbuf, *WRBUF;
/** \brief construct WRBUF
\returns WRBUF
*/
YAZ_EXPORT WRBUF wrbuf_alloc(void);
/** \brief destroy WRBUF and its buffer
\param b WRBUF
For YAZ 4.0.2 WRBUF b may be NULL.
*/
YAZ_EXPORT void wrbuf_destroy(WRBUF b);
/** \brief empty WRBUF content (length of buffer set to 0)
\param b WRBUF
*/
YAZ_EXPORT void wrbuf_rewind(WRBUF b);
/** \brief append constant size buffer to WRBUF
\param b WRBUF
\param buf buffer
\param size size of buffer
*/
YAZ_EXPORT void wrbuf_write(WRBUF b, const char *buf, size_t size);
/** \brief inserts buffer into WRBUF at some position
\param b WRBUF
\param pos position (0=beginning)
\param buf buffer
\param size size of buffer
*/
YAZ_EXPORT void wrbuf_insert(WRBUF b, size_t pos, const char *buf, size_t size);
/** \brief appends C-string to WRBUF
\param b WRBUF
\param buf C-string (0-terminated)
*/
YAZ_EXPORT void wrbuf_puts(WRBUF b, const char *buf);
/** \brief appends C-string to WRBUF - void pointer variant
\param buf C-string
\param client_data assumed WRBUF
*/
YAZ_EXPORT void wrbuf_vp_puts(const char *buf, void *client_data);
/** \brief writes buffer of certain size to WRBUF and XML encode (as CDATA)
\param b WRBUF
\param cp CDATA
\param size size of CDATA
*/
YAZ_EXPORT void wrbuf_xmlputs_n(WRBUF b, const char *cp, size_t size);
/** \brief writes C-String to WRBUF and XML encode (as CDATA)
\param b WRBUF
\param cp CDATA buffer (0-terminated)
*/
YAZ_EXPORT void wrbuf_xmlputs(WRBUF b, const char *cp);
/** \brief puts buf to WRBUF and replaces a single char
\param b WRBUF
\param buf buffer to append (C-string)
\param from character "from"
\param to charcter "to"
*/
YAZ_EXPORT void wrbuf_puts_replace_char(WRBUF b, const char *buf,
const char from, const char to);
/** \brief writes C-string to WRBUF and escape non-ASCII characters
\param b WRBUF
\param str C-string
Non-ASCII characters will be presented as \\xDD .
*/
YAZ_EXPORT void wrbuf_puts_escaped(WRBUF b, const char *str);
/** \brief writes buffer to WRBUF and escape non-ASCII characters
\param b WRBUF
\param buf buffer
\param len size of buffer
Non-ASCII characters will be presented as \\xDD .
*/
YAZ_EXPORT void wrbuf_write_escaped(WRBUF b, const char *buf, size_t len);
/** \brief writes printf result to WRBUF
\param b WRBUF
\param fmt printf-like format
*/
YAZ_EXPORT void wrbuf_printf(WRBUF b, const char *fmt, ...)
#ifdef __GNUC__
__attribute__ ((format (printf, 2, 3)))
#endif
;
/** \brief General writer of string using iconv and cdata
\param b WRBUF
\param cd iconv handle (0 for no conversion)
\param buf buffer
\param size size of buffer
\param wfunc write handler (that takes WRBUF only)
\returns -1 if invalid sequence was encountered (truncation in effect)
\returns 0 if buffer could be converted and written
*/
int wrbuf_iconv_write2(WRBUF b, yaz_iconv_t cd, const char *buf,
size_t size,
void (*wfunc)(WRBUF, const char *, size_t));
/** \brief writer of string using iconv and cdata
Obsolete: use wrbuf_iconv_write2 instead.
\param b WRBUF
\param cd iconv handle (0 for no conversion)
\param buf buffer
\param size size of buffer
\param cdata non-zero for CDATA; 0 for cdata
\returns -1 if invalid sequence was encountered (truncation in effect)
\returns 0 if buffer could be converted and written
*/
int wrbuf_iconv_write_x(WRBUF b, yaz_iconv_t cd, const char *buf,
size_t size, int cdata)
#ifdef __GNUC__
__attribute__ ((deprecated))
#endif
;
/** \brief Converts buffer using iconv and appends to WRBUF
\param b WRBUF
\param cd iconv handle
\param buf buffer
\param size size of buffer
*/
YAZ_EXPORT void wrbuf_iconv_write(WRBUF b, yaz_iconv_t cd, const char *buf,
size_t size);
/** \brief Converts buffer using iconv and appends to WRBUF as XML CDATA
\param b WRBUF
\param cd iconv handle
\param buf buffer
\param size size of buffer
*/
YAZ_EXPORT void wrbuf_iconv_write_cdata(WRBUF b, yaz_iconv_t cd,
const char *buf, size_t size);
/** \brief iconv converts C-string and appends to WRBUF
\param b WRBUF
\param cd iconv handle
\param str C-string
*/
YAZ_EXPORT void wrbuf_iconv_puts(WRBUF b, yaz_iconv_t cd, const char *str);
/** \brief iconv converts C-string and appends to WRBUF as XML CDATA
\param b WRBUF
\param cd iconv handle
\param str C-string
*/
YAZ_EXPORT void wrbuf_iconv_puts_cdata(WRBUF b, yaz_iconv_t cd,
const char *str);
/** \brief iconv converts character and appends to WRBUF
\param b WRBUF
\param cd iconv handle
\param ch character
*/
YAZ_EXPORT void wrbuf_iconv_putchar(WRBUF b, yaz_iconv_t cd, int ch);
/** \brief iconv reset(flush) to WRBUF
\param b
\param cd iconv handle
This function calls iconv(cd, 0, 0, ..) to make it
flush any remaining content.
*/
YAZ_EXPORT void wrbuf_iconv_reset(WRBUF b, yaz_iconv_t cd);
/** \brief chips traling blanks away from WRBUF
\param b WRBUF
*/
YAZ_EXPORT void wrbuf_chop_right(WRBUF b);
/** \brief cut size of WRBUF
\param b WRBUF
\param no_to_remove number of bytes to remove
*/
YAZ_EXPORT void wrbuf_cut_right(WRBUF b, size_t no_to_remove);
/** \brief grow WRBUF larger
\param b WRBUF
\param minsize make WRBUF at least this size
This function is normally not used by applications
*/
YAZ_EXPORT int wrbuf_grow(WRBUF b, size_t minsize);
#define wrbuf_len(b) ((b)->pos)
#define wrbuf_buf(b) ((b)->buf)
/** \brief returns WRBUF content as C-string
\param b WRBUF (may not be NULL)
\returns C-string
*/
YAZ_EXPORT const char *wrbuf_cstr(WRBUF b);
/** \brief returns WRBUF content as C-string or NULL
\param b WRBUF
\returns C-string or NULL
This function returns NULL if either b is NULL or length of buffer is 0
*/
YAZ_EXPORT
const char *wrbuf_cstr_null(WRBUF b);
#define wrbuf_putc(b, c) \
((void) ((b)->pos >= (b)->size ? wrbuf_grow(b, 1) : 0), \
(b)->buf[(b)->pos++] = (c))
/** \brief writes JSON text to WRBUF with escaping
\param b result
\param str input string to be encoded
*/
YAZ_EXPORT
void wrbuf_json_puts(WRBUF b, const char *str);
/** \brief writes JSON text to WRBUF with escaping
\param b result
\param cp char buffer
\param sz size of char buffer
*/
YAZ_EXPORT
void wrbuf_json_write(WRBUF b, const char *cp, size_t sz);
YAZ_EXPORT
void wrbuf_iconv_json_write(WRBUF b, yaz_iconv_t cd,
const char *buf, size_t size);
YAZ_EXPORT
void wrbuf_iconv_json_puts(WRBUF b, yaz_iconv_t cd, const char *strz);
/** \brief writes SHA1 text to WRBUF
\param b result
\param cp char buffer
\param sz size of char buffer
\param hexit 1=hex mode; 0=binary
\returns 0 if successful
\returns -1 on error
*/
YAZ_EXPORT
int wrbuf_sha1_write(WRBUF b, const char *cp, size_t sz, int hexit);
/** \brief writes SHA1 text to WRBUF
\param b result
\param cp C-string
\param hexit 1=hex mode; 0=binary
\returns 0 if successful
\returns -1 on error
*/
YAZ_EXPORT
int wrbuf_sha1_puts(WRBUF b, const char *cp, int hexit);
YAZ_END_CDECL
#endif
/*
* Local variables:
* c-basic-offset: 4
* c-file-style: "Stroustrup"
* indent-tabs-mode: nil
* End:
* vim: shiftwidth=4 tabstop=8 expandtab
*/