source: branches/oneport/libtransmission/utils.h @ 44

Last change on this file since 44 was 44, checked in by joshe, 16 years ago

Do some basic HTTP header parsing to check for 2xx response code.
Start looking for dictionary in the body instead of the entire response.
Add a memmem() implementation.

File size: 5.1 KB
Line 
1/******************************************************************************
2 * Copyright (c) 2005 Eric Petit
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
19 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
20 * DEALINGS IN THE SOFTWARE.
21 *****************************************************************************/
22
23#ifndef TR_UTILS_H
24#define TR_UTILS_H 1
25
26#define TR_MSG_ERR 1
27#define TR_MSG_INF 2
28#define TR_MSG_DBG 4
29#define tr_err( a... ) tr_msg( TR_MSG_ERR, ## a )
30#define tr_inf( a... ) tr_msg( TR_MSG_INF, ## a )
31#define tr_dbg( a... ) tr_msg( TR_MSG_DBG, ## a )
32void tr_msg  ( int level, char * msg, ... );
33
34int  tr_rand ( int );
35
36void * tr_memmem( const void *, size_t, const void *, size_t );
37
38/***********************************************************************
39 * tr_date
40 ***********************************************************************
41 * Returns the current date in milliseconds
42 **********************************************************************/
43static inline uint64_t tr_date()
44{
45    struct timeval tv;
46    gettimeofday( &tv, NULL );
47    return (uint64_t) tv.tv_sec * 1000 + ( tv.tv_usec / 1000 );
48}
49
50/***********************************************************************
51 * tr_wait
52 ***********************************************************************
53 * Wait 'delay' milliseconds
54 **********************************************************************/
55static inline void tr_wait( uint64_t delay )
56{
57#ifdef SYS_BEOS
58    snooze( 1000 * delay );
59#else
60    usleep( 1000 * delay );
61#endif
62}
63
64/***********************************************************************
65 * tr_bitfieldHas
66 **********************************************************************/
67static inline int tr_bitfieldHas( uint8_t * bitfield, int piece )
68{
69    return ( bitfield[ piece / 8 ] & ( 1 << ( 7 - ( piece % 8 ) ) ) );
70}
71
72/***********************************************************************
73 * tr_bitfieldAdd
74 **********************************************************************/
75static inline void tr_bitfieldAdd( uint8_t * bitfield, int piece )
76{
77    bitfield[ piece / 8 ] |= ( 1 << ( 7 - ( piece % 8 ) ) );
78}
79
80static inline void tr_bitfieldRem( uint8_t * bitfield, int piece )
81{
82    bitfield[ piece / 8 ] &= ~( 1 << ( 7 - ( piece % 8 ) ) );
83}
84
85#define tr_blockPiece(a) _tr_blockPiece(tor,a)
86static inline int _tr_blockPiece( tr_torrent_t * tor, int block )
87{
88    tr_info_t * inf = &tor->info;
89    return block / ( inf->pieceSize / tor->blockSize );
90}
91
92#define tr_blockSize(a) _tr_blockSize(tor,a)
93static inline int _tr_blockSize( tr_torrent_t * tor, int block )
94{
95    tr_info_t * inf = &tor->info;
96    int dummy;
97
98    if( block != tor->blockCount - 1 ||
99        !( dummy = inf->totalSize % tor->blockSize ) )
100    {
101        return tor->blockSize;
102    }
103
104    return dummy;
105}
106
107#define tr_blockPosInPiece(a) _tr_blockPosInPiece(tor,a)
108static inline int _tr_blockPosInPiece( tr_torrent_t * tor, int block )
109{
110    tr_info_t * inf = &tor->info;
111    return tor->blockSize *
112        ( block % ( inf->pieceSize / tor->blockSize ) );
113}
114
115#define tr_pieceCountBlocks(a) _tr_pieceCountBlocks(tor,a)
116static inline int _tr_pieceCountBlocks( tr_torrent_t * tor, int piece )
117{
118    tr_info_t * inf = &tor->info;
119    if( piece < inf->pieceCount - 1 ||
120        !( tor->blockCount % ( inf->pieceSize / tor->blockSize ) ) )
121    {
122        return inf->pieceSize / tor->blockSize;
123    }
124    return tor->blockCount % ( inf->pieceSize / tor->blockSize );
125}
126
127#define tr_pieceStartBlock(a) _tr_pieceStartBlock(tor,a)
128static inline int _tr_pieceStartBlock( tr_torrent_t * tor, int piece )
129{
130    tr_info_t * inf = &tor->info;
131    return piece * ( inf->pieceSize / tor->blockSize );
132}
133
134#define tr_pieceSize(a) _tr_pieceSize(tor,a)
135static inline int _tr_pieceSize( tr_torrent_t * tor, int piece )
136{
137    tr_info_t * inf = &tor->info;
138    if( piece < inf->pieceCount - 1 ||
139        !( inf->totalSize % inf->pieceSize ) )
140    {
141        return inf->pieceSize;
142    }
143    return inf->totalSize % inf->pieceSize;
144}
145
146#define tr_block(a,b) _tr_block(tor,a,b)
147static inline int _tr_block( tr_torrent_t * tor, int index, int begin )
148{
149    tr_info_t * inf = &tor->info;
150    return index * ( inf->pieceSize / tor->blockSize ) +
151        begin / tor->blockSize;
152}
153
154#endif
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