127 lines
4.2 KiB
C
127 lines
4.2 KiB
C
/******************************************************************************
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* $Id$
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*
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* Copyright (c) 2005-2008 Transmission authors and contributors
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*****************************************************************************/
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#ifndef TR_BENCODE_H
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#define TR_BENCODE_H 1
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#include <inttypes.h> /* for int64_t */
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#include <string.h> /* for memset */
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typedef struct benc_val_s
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{
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#define TYPE_INT 1
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#define TYPE_STR 2
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#define TYPE_LIST 4
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#define TYPE_DICT 8
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char type;
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union
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{
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int64_t i;
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struct
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{
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int i;
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int nofree;
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char * s;
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} s;
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struct
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{
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int alloc;
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int count;
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struct benc_val_s * vals;
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} l;
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} val;
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} benc_val_t;
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int tr_bencParse( const void * buf,
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const void * bufend,
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benc_val_t * setme_benc,
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const uint8_t ** setme_end );
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int tr_bencLoad( const void * buf,
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int buflen,
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benc_val_t * setme_benc,
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char ** setme_end );
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void tr_bencPrint( benc_val_t * val );
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void tr_bencFree( benc_val_t * val );
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benc_val_t * tr_bencDictFind( benc_val_t * val, const char * key );
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benc_val_t * tr_bencDictFindType( benc_val_t * val, const char * key, int type );
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benc_val_t * tr_bencDictFindFirst( benc_val_t * val, ... );
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/* marks a string as 'do not free' and returns it */
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char * tr_bencStealStr( benc_val_t * val );
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/* convenience functions for building benc_val_t structures */
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static inline void tr_bencInit( benc_val_t * val, int type )
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{
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memset( val, 0, sizeof( *val ) );
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val->type = type;
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}
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#define tr_bencInitStr( a, b, c, d ) \
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_tr_bencInitStr( (a), ( char * )(b), (c), (d) )
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void _tr_bencInitStr( benc_val_t * val, char * str, int len, int nofree );
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int tr_bencInitStrDup( benc_val_t * val, const char * str );
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void tr_bencInitInt( benc_val_t * val, int64_t num );
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int tr_bencListReserve( benc_val_t * list, int count );
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/* note that for one key-value pair, count should be 1, not 2 */
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int tr_bencDictReserve( benc_val_t * dict, int count );
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benc_val_t * tr_bencListAdd( benc_val_t * list );
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/* note: key must not be freed or modified while val is in use */
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benc_val_t * tr_bencDictAdd( benc_val_t * dict, const char * key );
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char* tr_bencSave( const benc_val_t * val, int * len );
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int64_t tr_bencGetInt ( const benc_val_t * val );
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/**
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*** Treat these as private -- they're only made public here
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*** so that the unit tests can find them
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**/
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int tr_bencParseInt( const uint8_t * buf,
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const uint8_t * bufend,
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const uint8_t ** setme_end,
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int64_t * setme_val );
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int tr_bencParseStr( const uint8_t * buf,
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const uint8_t * bufend,
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const uint8_t ** setme_end,
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uint8_t ** setme_str,
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size_t * setme_strlen );
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/**
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***
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**/
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benc_val_t* tr_bencListGetNthChild( benc_val_t * val, int i );
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#endif
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