603 lines
19 KiB
C
603 lines
19 KiB
C
/*
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* This file Copyright (C) 2009-2010 Mnemosyne LLC
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*
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* This file is licensed by the GPL version 2. Works owned by the
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* Transmission project are granted a special exemption to clause 2(b)
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* so that the bulk of its code can remain under the MIT license.
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* This exemption does not extend to derived works not owned by
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* the Transmission project.
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*
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* $Id$
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*/
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#ifndef TR_UTILS_H
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#define TR_UTILS_H 1
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#include <inttypes.h>
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#include <stddef.h> /* size_t */
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#include <stdio.h> /* FILE* */
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#include <string.h> /* memcpy()* */
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#include <stdlib.h> /* malloc() */
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#include <time.h> /* time_t */
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#ifdef __cplusplus
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extern "C" {
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#endif
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/***
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****
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***/
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/**
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* @addtogroup utils Utilities
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* @{
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*/
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#ifndef FALSE
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#define FALSE 0
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#endif
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#ifndef TRUE
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#define TRUE 1
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#endif
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#ifndef UNUSED
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#ifdef __GNUC__
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#define UNUSED __attribute__ ( ( unused ) )
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#else
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#define UNUSED
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#endif
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#endif
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#ifndef TR_GNUC_PRINTF
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#ifdef __GNUC__
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#define TR_GNUC_PRINTF( fmt, args ) __attribute__ ( ( format ( printf, fmt, args ) ) )
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#else
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#define TR_GNUC_PRINTF( fmt, args )
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#endif
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#endif
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#ifndef TR_GNUC_NONNULL
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#ifdef __GNUC__
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#define TR_GNUC_NONNULL( ... ) __attribute__((nonnull (__VA_ARGS__)))
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#else
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#define TR_GNUC_NONNULL( ... )
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#endif
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#endif
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#ifndef TR_GNUC_NULL_TERMINATED
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#if __GNUC__ > 4 || ( __GNUC__ == 4 && __GNUC_MINOR__ >= 3 )
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#define TR_GNUC_NULL_TERMINATED __attribute__ ( ( __sentinel__ ) )
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#define TR_GNUC_HOT __attribute ( ( hot ) )
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#else
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#define TR_GNUC_NULL_TERMINATED
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#define TR_GNUC_HOT
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#endif
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#endif
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#if __GNUC__ > 2 || ( __GNUC__ == 2 && __GNUC_MINOR__ >= 96 )
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#define TR_GNUC_PURE __attribute__ ( ( __pure__ ) )
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#define TR_GNUC_MALLOC __attribute__ ( ( __malloc__ ) )
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#else
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#define TR_GNUC_PURE
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#define TR_GNUC_MALLOC
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#endif
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/***
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****
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***/
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const char * tr_strip_positional_args( const char * fmt );
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#if !defined( _ )
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#if defined( HAVE_LIBINTL_H ) && !defined( SYS_DARWIN )
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#include <libintl.h>
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#define _( a ) gettext ( a )
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#else
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#define _( a ) ( a )
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#endif
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#endif
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/* #define DISABLE_GETTEXT */
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#ifndef DISABLE_GETTEXT
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#if defined(WIN32) || defined(TR_EMBEDDED)
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#define DISABLE_GETTEXT
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#endif
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#endif
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#ifdef DISABLE_GETTEXT
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#undef _
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#define _( a ) tr_strip_positional_args( a )
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#endif
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/****
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*****
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****/
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void tr_msgInit( void );
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#define TR_MAX_MSG_LOG 10000
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extern tr_msg_level messageLevel;
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static inline tr_bool tr_msgLoggingIsActive( tr_msg_level level )
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{
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return messageLevel >= level;
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}
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void tr_msg( const char * file, int line,
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tr_msg_level level,
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const char * torrent,
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const char * fmt, ... ) TR_GNUC_PRINTF( 5, 6 );
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#define tr_nerr( n, ... ) \
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do { \
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if( tr_msgLoggingIsActive( TR_MSG_ERR ) ) \
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tr_msg( __FILE__, __LINE__, TR_MSG_ERR, n, __VA_ARGS__ ); \
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} while( 0 )
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#define tr_ninf( n, ... ) \
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do { \
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if( tr_msgLoggingIsActive( TR_MSG_INF) ) \
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tr_msg( __FILE__, __LINE__, TR_MSG_INF, n, __VA_ARGS__ ); \
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} while( 0 )
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#define tr_ndbg( n, ... ) \
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do { \
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if( tr_msgLoggingIsActive( TR_MSG_DBG) ) \
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tr_msg( __FILE__, __LINE__, TR_MSG_DBG, n, __VA_ARGS__ ); \
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} while( 0 )
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#define tr_torerr( tor, ... ) \
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do { \
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if( tr_msgLoggingIsActive( TR_MSG_ERR ) ) \
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tr_msg( __FILE__, __LINE__, TR_MSG_ERR, tor->info.name, __VA_ARGS__ ); \
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} while( 0 )
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#define tr_torinf( tor, ... ) \
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do { \
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if( tr_msgLoggingIsActive( TR_MSG_INF ) ) \
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tr_msg( __FILE__, __LINE__, TR_MSG_INF, tor->info.name, __VA_ARGS__ ); \
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} while( 0 )
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#define tr_tordbg( tor, ... ) \
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do { \
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if( tr_msgLoggingIsActive( TR_MSG_DBG ) ) \
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tr_msg( __FILE__, __LINE__, TR_MSG_DBG, tor->info.name, __VA_ARGS__ ); \
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} while( 0 )
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#define tr_err( ... ) \
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do { \
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if( tr_msgLoggingIsActive( TR_MSG_ERR ) ) \
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tr_msg( __FILE__, __LINE__, TR_MSG_ERR, NULL, __VA_ARGS__ ); \
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} while( 0 )
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#define tr_inf( ... ) \
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do { \
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if( tr_msgLoggingIsActive( TR_MSG_INF ) ) \
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tr_msg( __FILE__, __LINE__, TR_MSG_INF, NULL, __VA_ARGS__ ); \
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} while( 0 )
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#define tr_dbg( ... ) \
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do { \
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if( tr_msgLoggingIsActive( TR_MSG_DBG ) ) \
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tr_msg( __FILE__, __LINE__, TR_MSG_DBG, NULL, __VA_ARGS__ ); \
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} while( 0 )
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FILE* tr_getLog( void );
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/** @brief return true if deep logging has been enabled by the user; false otherwise */
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tr_bool tr_deepLoggingIsActive( void );
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void tr_deepLog( const char * file,
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int line,
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const char * name,
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const char * fmt,
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... ) TR_GNUC_PRINTF( 4, 5 ) TR_GNUC_NONNULL(1,4);
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/** @brief set the buffer with the current time formatted for deep logging. */
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char* tr_getLogTimeStr( char * buf, int buflen ) TR_GNUC_NONNULL(1);
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/**
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* @brief Rich Salz's classic implementation of shell-style pattern matching for ?, \, [], and * characters.
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* @return 1 if the pattern matches, 0 if it doesn't, or -1 if an error occured
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*/
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int tr_wildmat( const char * text, const char * pattern ) TR_GNUC_NONNULL(1,2);
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/** @brief Portability wrapper for basename() that uses the system implementation if available */
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char* tr_basename( const char * path ) TR_GNUC_MALLOC;
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/** @brief Portability wrapper for dirname() that uses the system implementation if available */
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char* tr_dirname( const char * path ) TR_GNUC_MALLOC;
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/**
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* @brief Portability wrapper for mkdir()
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*
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* A portability wrapper around mkdir().
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* On WIN32, the `permissions' argument is unused.
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*
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* @return zero on success, or -1 if an error occurred
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* (in which case errno is set appropriately).
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*/
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int tr_mkdir( const char * path, int permissions ) TR_GNUC_NONNULL(1);
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/**
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* Like mkdir, but makes parent directories as needed.
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*
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* @return zero on success, or -1 if an error occurred
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* (in which case errno is set appropriately).
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*/
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int tr_mkdirp( const char * path, int permissions ) TR_GNUC_NONNULL(1);
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/**
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* @brief Loads a file and returns its contents.
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* On failure, NULL is returned and errno is set.
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*/
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uint8_t* tr_loadFile( const char * filename, size_t * size ) TR_GNUC_MALLOC
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TR_GNUC_NONNULL(1);
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/** @brief build a filename from a series of elements using the
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platform's correct directory separator. */
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char* tr_buildPath( const char * first_element, ... ) TR_GNUC_NULL_TERMINATED
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TR_GNUC_MALLOC;
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struct event;
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/**
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* @brief Convenience wrapper around timer_add() to have a timer wake up in a number of seconds and microseconds
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* @param timer
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* @param seconds
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* @param microseconds
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*/
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void tr_timerAdd( struct event * timer, int seconds, int microseconds ) TR_GNUC_NONNULL(1);
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/**
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* @brief Convenience wrapper around timer_add() to have a timer wake up in a number of milliseconds
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* @param timer
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* @param milliseconds
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*/
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void tr_timerAddMsec( struct event * timer, int milliseconds ) TR_GNUC_NONNULL(1);
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/** @brief return the current date in milliseconds */
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uint64_t tr_date( void );
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/** @brief sleep the specified number of milliseconds */
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void tr_wait_msec( long int delay_milliseconds );
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/**
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* @brief make a copy of 'str' whose non-utf8 content has been corrected or stripped
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* @return a newly-allocated string that must be freed with tr_free()
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* @param str the string to make a clean copy of
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* @param len the length of the string to copy. If -1, the entire string is used.
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*/
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char* tr_utf8clean( const char * str, int len ) TR_GNUC_MALLOC;
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/***
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****
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***/
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/* Sometimes the system defines MAX/MIN, sometimes not.
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In the latter case, define those here since we will use them */
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#ifndef MAX
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#define MAX( a, b ) ( ( a ) > ( b ) ? ( a ) : ( b ) )
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#endif
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#ifndef MIN
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#define MIN( a, b ) ( ( a ) > ( b ) ? ( b ) : ( a ) )
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#endif
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/***
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****
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***/
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/** @brief Portability wrapper around malloc() in which `0' is a safe argument */
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static inline void* tr_malloc( size_t size )
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{
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return size ? malloc( size ) : NULL;
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}
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/** @brief Portability wrapper around calloc() in which `0' is a safe argument */
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static inline void* tr_malloc0( size_t size )
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{
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return size ? calloc( 1, size ) : NULL;
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}
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/** @brief Portability wrapper around free() in which `NULL' is a safe argument */
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static inline void tr_free( void * p )
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{
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if( p != NULL )
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free( p );
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}
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/**
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* @brief make a newly-allocated copy of a chunk of memory
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* @param src the memory to copy
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* @param byteCount the number of bytes to copy
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* @return a newly-allocated copy of `src' that can be freed with tr_free()
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*/
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static inline void* tr_memdup( const void * src, size_t byteCount )
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{
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return memcpy( tr_malloc( byteCount ), src, byteCount );
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}
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#define tr_new( struct_type, n_structs ) \
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( (struct_type *) tr_malloc ( ( (size_t) sizeof ( struct_type ) ) * ( ( size_t) ( n_structs ) ) ) )
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#define tr_new0( struct_type, n_structs ) \
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( (struct_type *) tr_malloc0 ( ( (size_t) sizeof ( struct_type ) ) * ( ( size_t) ( n_structs ) ) ) )
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#define tr_renew( struct_type, mem, n_structs ) \
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( (struct_type *) realloc ( ( mem ), ( (size_t) sizeof ( struct_type ) ) * ( ( size_t) ( n_structs ) ) ) )
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void* tr_valloc( size_t bufLen );
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/**
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* @brief make a newly-allocated copy of a substring
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* @param in is a void* so that callers can pass in both signed & unsigned without a cast
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* @param len length of the substring to copy. if a length less than zero is passed in, strlen( len ) is used
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* @return a newly-allocated copy of `in' that can be freed with tr_free()
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*/
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char* tr_strndup( const void * in, int len ) TR_GNUC_MALLOC;
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/**
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* @brief make a newly-allocated copy of a string
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* @param in is a void* so that callers can pass in both signed & unsigned without a cast
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* @return a newly-allocated copy of `in' that can be freed with tr_free()
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*/
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static inline char* tr_strdup( const void * in )
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{
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return tr_strndup( in, in ? (int)strlen((const char *)in) : 0 );
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}
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/** @brief similar to bsearch() but returns the index of the lower bound */
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int tr_lowerBound( const void * key,
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const void * base,
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size_t nmemb,
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size_t size,
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int (* compar)(const void* key, const void* arrayMember),
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tr_bool * exact_match ) TR_GNUC_HOT TR_GNUC_NONNULL(1,5,6);
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/**
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* @brief sprintf() a string into a newly-allocated buffer large enough to hold it
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* @return a newly-allocated string that can be freed with tr_free()
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*/
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char* tr_strdup_printf( const char * fmt, ... ) TR_GNUC_PRINTF( 1, 2 )
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TR_GNUC_MALLOC;
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/**
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* @brief Translate a block of bytes into base64
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* @return a newly-allocated string that can be freed with tr_free()
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*/
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char* tr_base64_encode( const void * input,
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int inlen,
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int * outlen ) TR_GNUC_MALLOC;
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/**
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* @brief Translate a block of bytes from base64 into raw form
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* @return a newly-allocated string that can be freed with tr_free()
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*/
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char* tr_base64_decode( const void * input,
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int inlen,
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int * outlen ) TR_GNUC_MALLOC;
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/** @brief Portability wrapper for strlcpy() that uses the system implementation if available */
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size_t tr_strlcpy( char * dst, const void * src, size_t siz );
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/** @brief Portability wrapper for snprintf() that uses the system implementation if available */
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int tr_snprintf( char * buf, size_t buflen,
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const char * fmt, ... ) TR_GNUC_PRINTF( 3, 4 ) TR_GNUC_NONNULL(1,3);
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/** @brief Convenience wrapper around strerorr() guaranteed to not return NULL
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@param errno */
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const char* tr_strerror( int );
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/** @brief strips leading and trailing whitspace from a string
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@return the stripped string */
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char* tr_strstrip( char * str );
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/** @brief Returns true if the string ends with the specified case-insensitive suffix */
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tr_bool tr_str_has_suffix( const char *str, const char *suffix );
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/** @brief Portability wrapper for memmem() that uses the system implementation if available */
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const char* tr_memmem( const char * haystack, size_t haystack_len,
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const char * needle, size_t needle_len );
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/***
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****
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***/
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typedef void ( tr_set_func )( void * element, void * userData );
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/**
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* @brief find the differences and commonalities in two sorted sets
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* @param a the first set
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* @param aCount the number of elements in the set 'a'
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* @param b the second set
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* @param bCount the number of elements in the set 'b'
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* @param compare the sorting method for both sets
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* @param elementSize the sizeof the element in the two sorted sets
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* @param in_a called for items in set 'a' but not set 'b'
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* @param in_b called for items in set 'b' but not set 'a'
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* @param in_both called for items that are in both sets
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* @param userData user data passed along to in_a, in_b, and in_both
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*/
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void tr_set_compare( const void * a, size_t aCount,
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const void * b, size_t bCount,
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int compare( const void * a, const void * b ),
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size_t elementSize,
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tr_set_func in_a_cb,
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tr_set_func in_b_cb,
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tr_set_func in_both_cb,
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void * userData );
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void tr_sha1_to_hex( char * out, const uint8_t * sha1 ) TR_GNUC_NONNULL(1,2);
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void tr_hex_to_sha1( uint8_t * out, const char * hex ) TR_GNUC_NONNULL(1,2);
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/** @brief convenience function to determine if an address is an IP address (IPv4 or IPv6) */
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tr_bool tr_addressIsIP( const char * address );
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/** @brief return TRUE if the url is a http or https url that Transmission understands */
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tr_bool tr_urlIsValidTracker( const char * url ) TR_GNUC_NONNULL(1);
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/** @brief return TRUE if the url is a [ http, https, ftp, ftps ] url that Transmission understands */
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tr_bool tr_urlIsValid( const char * url ) TR_GNUC_NONNULL(1);
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/** @brief parse a URL into its component parts
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@return zero on success or an error number if an error occurred */
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int tr_urlParse( const char * url,
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int url_len,
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char ** setme_scheme,
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char ** setme_host,
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int * setme_port,
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char ** setme_path ) TR_GNUC_NONNULL(1);
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/** @brief return TR_RATIO_NA, TR_RATIO_INF, or a number in [0..1]
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@return TR_RATIO_NA, TR_RATIO_INF, or a number in [0..1] */
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double tr_getRatio( uint64_t numerator, uint64_t denominator );
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/**
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* @brief Given a string like "1-4" or "1-4,6,9,14-51", this returns a
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* newly-allocated array of all the integers in the set.
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* @return a newly-allocated array of integers that must be freed with tr_free(),
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* or NULL if a fragment of the string can't be parsed.
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*
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* For example, "5-8" will return [ 5, 6, 7, 8 ] and setmeCount will be 4.
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*/
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int* tr_parseNumberRange( const char * str,
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int str_len,
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int * setmeCount ) TR_GNUC_MALLOC TR_GNUC_NONNULL(1);
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/**
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* @brief truncate a double value at a given number of decimal places.
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*
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* this can be used to prevent a printf() call from rounding up:
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* call with the decimal_places argument equal to the number of
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* decimal places in the printf()'s precision:
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*
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* - printf("%.2f%%", 99.999 ) ==> "100.00%"
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*
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* - printf("%.2f%%", tr_truncd(99.999, 2)) ==> "99.99%"
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* ^ ^
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* | These should match |
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* +------------------------+
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*/
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double tr_truncd( double x, int decimal_places );
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/* return a percent formatted string of either x.xx, xx.x or xxx */
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char* tr_strpercent( char * buf, double x, size_t buflen );
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/**
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* @param buf the buffer to write the string to
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* @param buflef buf's size
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* @param ratio the ratio to convert to a string
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* @param the string represntation of "infinity"
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|
*/
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|
char* tr_strratio( char * buf, size_t buflen, double ratio, const char * infinity ) TR_GNUC_NONNULL(1,4);
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/* return a truncated double as a string */
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char* tr_strtruncd( char * buf, double x, int precision, size_t buflen );
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/** @brief Portability wrapper for localtime_r() that uses the system implementation if available */
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struct tm * tr_localtime_r( const time_t *_clock, struct tm *_result );
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|
|
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/**
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|
* @brief move a file
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|
* @return 0 on success; otherwise, return -1 and set errno
|
|
*/
|
|
int tr_moveFile( const char * oldpath, const char * newpath,
|
|
tr_bool * renamed ) TR_GNUC_NONNULL(1,2);
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|
|
|
/** @brief convenience function to remove an item from an array */
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|
static inline void tr_removeElementFromArray( void * array,
|
|
unsigned int index_to_remove,
|
|
size_t sizeof_element,
|
|
size_t nmemb )
|
|
{
|
|
char * a = (char*) array;
|
|
|
|
memmove( a + sizeof_element * index_to_remove,
|
|
a + sizeof_element * ( index_to_remove + 1 ),
|
|
sizeof_element * ( --nmemb - index_to_remove ) );
|
|
}
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|
|
|
/***
|
|
****
|
|
***/
|
|
|
|
/** @brief Private libtransmission variable that's visible only for inlining in tr_time() */
|
|
extern time_t transmission_now;
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|
|
|
/**
|
|
* @brief very inexpensive form of time(NULL)
|
|
* @return the current epoch time in seconds
|
|
*
|
|
* This function returns a second counter that is updated once per second.
|
|
* If something blocks the libtransmission thread for more than a second,
|
|
* that counter may be thrown off, so this function is not guaranteed
|
|
* to always be accurate. However, it is *much* faster when 100% accuracy
|
|
* isn't needed
|
|
*/
|
|
static inline time_t tr_time( void ) { return transmission_now; }
|
|
|
|
/** @brief Private libtransmission function to update tr_time()'s counter */
|
|
static inline void tr_timeUpdate( time_t now ) { transmission_now = now; }
|
|
|
|
/** @brief Portability wrapper for realpath() that uses the system implementation if available */
|
|
char* tr_realpath( const char *path, char * resolved_path );
|
|
|
|
/***
|
|
****
|
|
***/
|
|
|
|
/* example: tr_formatter_size_init( 1024, _("KiB"), _("MiB"), _("GiB"), _("TiB") ); */
|
|
|
|
void tr_formatter_size_init( unsigned int kilo, const char * kb, const char * mb,
|
|
const char * gb, const char * tb );
|
|
|
|
void tr_formatter_speed_init( unsigned int kilo, const char * kb, const char * mb,
|
|
const char * gb, const char * tb );
|
|
|
|
void tr_formatter_mem_init( unsigned int kilo, const char * kb, const char * mb,
|
|
const char * gb, const char * tb );
|
|
|
|
extern unsigned int tr_speed_K;
|
|
extern unsigned int tr_mem_K;
|
|
extern unsigned int tr_size_K;
|
|
|
|
/* format a speed from KBps into a user-readable string. */
|
|
char* tr_formatter_speed_KBps( char * buf, double KBps, size_t buflen );
|
|
|
|
/* format a memory size from bytes into a user-readable string. */
|
|
char* tr_formatter_mem_B( char * buf, uint64_t bytes, size_t buflen );
|
|
|
|
/* format a memory size from MB into a user-readable string. */
|
|
static inline char* tr_formatter_mem_MB( char * buf, double MBps, size_t buflen ) { return tr_formatter_mem_B( buf, MBps * tr_mem_K * tr_mem_K, buflen ); }
|
|
|
|
/* format a file size from bytes into a user-readable string. */
|
|
char* tr_formatter_size_B( char * buf, uint64_t bytes, size_t buflen );
|
|
|
|
|
|
/***
|
|
****
|
|
***/
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
/** @} */
|
|
|
|
#endif
|