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(trunk libT) avoid an unnecessary malloc/free in tr_strdup_printf()

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This commit is contained in:
Charles Kerr
2009-06-14 01:01:46 +00:00
parent ef21704b58
commit d8360f9a26
1 changed files with 14 additions and 9 deletions
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23
libtransmission/utils.c
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@@ -732,18 +732,23 @@ tr_memmem( const char * haystack, size_t haystacklen,
char*
tr_strdup_printf( const char * fmt, ... )
{
char * ret = NULL;
struct evbuffer * buf;
va_list ap;
va_list ap;
char * ret;
size_t len;
char statbuf[2048];
buf = evbuffer_new( );
va_start( ap, fmt );
if( evbuffer_add_vprintf( buf, fmt, ap ) != -1 )
ret = tr_strdup( EVBUFFER_DATA( buf ) );
len = evutil_vsnprintf( statbuf, sizeof( statbuf ), fmt, ap );
va_end( ap );
evbuffer_free( buf );
if( len < sizeof( statbuf ) )
ret = tr_strndup( statbuf, len );
else {
ret = tr_new( char, len + 1 );
va_start( ap, fmt );
evutil_vsnprintf( ret, len + 1, fmt, ap );
va_end( ap );
}
return ret;
}