transmission/libtransmission/utils.h

171 lines
5.3 KiB
C

/******************************************************************************
* $Id$
*
* Copyright (c) 2005-2008 Transmission authors and contributors
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*****************************************************************************/
#ifndef TR_UTILS_H
#define TR_UTILS_H 1
#include <inttypes.h>
#include <stdarg.h>
#include <stddef.h> /* for size_t */
#include <stdio.h> /* FILE* */
void tr_msgInit( void );
#define tr_err( a... ) tr_msg( __FILE__, __LINE__, TR_MSG_ERR, ## a )
#define tr_inf( a... ) tr_msg( __FILE__, __LINE__, TR_MSG_INF, ## a )
#define tr_dbg( a... ) tr_msg( __FILE__, __LINE__, TR_MSG_DBG, ## a )
void tr_msg ( const char * file, int line, int level, const char * msg, ... );
FILE* tr_getLog( void );
char* tr_getLogTimeStr( char * buf, int buflen );
/** Returns a random number in the range of [0...n) */
int tr_rand ( int n );
/**
* a portability wrapper around mkdir().
* On WIN32, the `permissions' argument is unused.
*
* @return zero on success, or -1 if an error occurred
* (in which case errno is set appropriately).
*/
int tr_mkdir( const char * path, int permissions );
/**
* Like mkdir, but makes parent directories as needed.
*
* @return zero on success, or -1 if an error occurred
* (in which case errno is set appropriately).
*/
int tr_mkdirp( const char * path, int permissions );
uint8_t* tr_loadFile( const char * filename, size_t * size );
int tr_vasprintf( char **strp, const char *fmt, va_list ap );
int tr_asprintf( char **strp, const char *fmt, ...);
/* creates a filename from a series of elements using the
correct separator for filenames. */
void tr_buildPath( char* buf, size_t buflen,
const char * first_element, ... );
struct timeval timevalMsec( uint64_t milliseconds );
int tr_ioErrorFromErrno( int err );
const char * tr_errorString( int code );
/* return the current date in milliseconds */
uint64_t tr_date( void );
/* wait the specified number of milliseconds */
void tr_wait( uint64_t delay_milliseconds );
/***
****
***/
/* Sometimes the system defines MAX/MIN, sometimes not. In the latter
case, define those here since we will use them */
#ifndef MAX
#define MAX(a,b) ((a)>(b)?(a):(b))
#endif
#ifndef MIN
#define MIN(a,b) ((a)>(b)?(b):(a))
#endif
/***
****
***/
#define tr_new(struct_type, n_structs) \
((struct_type *) tr_malloc (((size_t) sizeof (struct_type)) * ((size_t) (n_structs))))
#define tr_new0(struct_type, n_structs) \
((struct_type *) tr_malloc0 (((size_t) sizeof (struct_type)) * ((size_t) (n_structs))))
#define tr_renew(struct_type, mem, n_structs) \
((struct_type *) realloc ((mem), ((size_t) sizeof (struct_type)) * ((size_t) (n_structs))))
void* tr_malloc ( size_t );
void* tr_malloc0 ( size_t );
void* tr_calloc ( size_t nmemb, size_t size );
void tr_free ( void* );
char* tr_strdup( const char * str );
char* tr_strndup( const char * str, int len );
/***
****
***/
typedef void (tr_set_func)(void * element, void * userData );
void tr_set_compare( const void * a, size_t aCount,
const void * b, size_t bCount,
int compare( const void * a, const void * b ),
size_t elementSize,
tr_set_func in_a_cb,
tr_set_func in_b_cb,
tr_set_func in_both_cb,
void * userData );
int tr_compareUint16( uint16_t a, uint16_t b );
int tr_compareUint32( uint32_t a, uint32_t b );
/***
****
***/
struct tr_bitfield
{
uint8_t * bits;
size_t len;
};
typedef struct tr_bitfield tr_bitfield;
typedef struct tr_bitfield tr_bitfield_t;
tr_bitfield* tr_bitfieldNew( size_t bitcount );
tr_bitfield* tr_bitfieldDup( const tr_bitfield* );
void tr_bitfieldFree( tr_bitfield*);
void tr_bitfieldClear( tr_bitfield* );
void tr_bitfieldAdd( tr_bitfield*, size_t bit );
void tr_bitfieldRem( tr_bitfield*, size_t bit );
void tr_bitfieldAddRange( tr_bitfield *, size_t begin, size_t end );
void tr_bitfieldRemRange ( tr_bitfield*, size_t begin, size_t end );
int tr_bitfieldHas( const tr_bitfield*, size_t bit );
int tr_bitfieldIsEmpty( const tr_bitfield* );
size_t tr_bitfieldCountTrueBits( const tr_bitfield* );
tr_bitfield* tr_bitfieldOr( tr_bitfield*, const tr_bitfield* );
double tr_getRatio( double numerator, double denominator );
#endif