transmission/libtransmission/utils.c

147 lines
3.7 KiB
C
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2006-07-16 19:39:23 +00:00
/******************************************************************************
* $Id$
*
* Copyright (c) 2005-2006 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.
*****************************************************************************/
#include "transmission.h"
void tr_msg( int level, char * msg, ... )
{
char string[256];
va_list args;
static int verboseLevel = 0;
if( !verboseLevel )
{
char * env;
env = getenv( "TR_DEBUG" );
verboseLevel = env ? atoi( env ) : -1;
verboseLevel = verboseLevel ? verboseLevel : -1;
}
if( verboseLevel < 1 && level > TR_MSG_ERR )
{
return;
}
if( verboseLevel < 2 && level > TR_MSG_INF )
{
return;
}
va_start( args, msg );
vsnprintf( string, sizeof( string ), msg, args );
va_end( args );
fprintf( stderr, "%s\n", string );
}
int tr_rand( int sup )
{
static int init = 0;
if( !init )
{
srand( tr_date() );
init = 1;
}
return rand() % sup;
}
void * tr_memmem( const void *vbig, size_t big_len,
const void *vlittle, size_t little_len )
{
const char *big = vbig;
const char *little = vlittle;
size_t ii, jj;
if( 0 == big_len || 0 == little_len )
{
return NULL;
}
for( ii = 0; ii + little_len <= big_len; ii++ )
{
for( jj = 0; jj < little_len; jj++ )
{
if( big[ii + jj] != little[jj] )
{
break;
}
}
if( jj == little_len )
{
return (char*)big + ii;
}
}
return NULL;
}
int tr_mkdir( char * path )
{
char * p, * pp;
struct stat sb;
int done;
p = path;
while( '/' == *p )
p++;
pp = p;
done = 0;
while( ( p = strchr( pp, '/' ) ) || ( p = strchr( pp, '\0' ) ) )
{
if( '\0' == *p)
{
done = 1;
}
else
{
*p = '\0';
}
if( stat( path, &sb ) )
{
/* Folder doesn't exist yet */
if( mkdir( path, 0777 ) )
{
tr_err( "Could not create directory %s (%s)", path,
strerror( errno ) );
*p = '/';
return 1;
}
}
else if( ( sb.st_mode & S_IFMT ) != S_IFDIR )
{
/* Node exists but isn't a folder */
tr_err( "Remove %s, it's in the way.", path );
*p = '/';
return 1;
}
if( done )
{
break;
}
*p = '/';
p++;
pp = p;
}
return 0;
}