DirectResult
direct_print( char *buf,
size_t size,
const char *format,
va_list args,
char **ret_ptr )
{
int len = 1;
*ret_ptr = buf;
if (buf) {
buf[0] = 0;
#ifdef __GNUC__
va_list args_copy;
va_copy( args_copy, args );
len = direct_vsnprintf( buf, size, format, args_copy );
va_end( args_copy );
#else
len = direct_vsnprintf( buf, size, format, args );
#endif
if (len < 0)
return DR_FAILURE;
}
else
size = 0;
if (len >= (int) size) {
char *ptr = buf;
ptr = direct_malloc( len+1 );
if (!ptr)
return DR_NOLOCALMEMORY;
len = direct_vsnprintf( ptr, len+1, format, args );
if (len < 0) {
direct_free( ptr );
return DR_FAILURE;
}
*ret_ptr = ptr;
}
return DR_OK;
}
String &
String::PrintF( const char *format, va_list args, size_t stack_buffer )
{
size_t len;
char buf[stack_buffer];
char *ptr = buf;
D_ASSERT( format != NULL );
// TODO: check if va_copy is required here
#ifdef __GNUC__
va_list ap2;
va_copy( ap2, args );
len = direct_vsnprintf( buf, sizeof(buf), format, ap2 );
va_end( ap2 );
#else
len = direct_vsnprintf( buf, sizeof(buf), format, args );
#endif
if (len < 0)
return *this;
if (len >= sizeof(buf)) {
ptr = (char*) direct_malloc( len+1 );
if (!ptr) {
D_OOM();
return *this;
}
len = direct_vsnprintf( ptr, len+1, format, args );
if (len < 0) {
direct_free( ptr );
return *this;
}
}
str.append( ptr );
if (ptr != buf)
direct_free( ptr );
return *this;
}
int
direct_snprintf( char *buffer,
size_t bytes,
const char *format,
... )
{
int ret;
va_list args;
va_start( args, format );
ret = direct_vsnprintf( buffer, bytes, format, args );
va_end( args );
return ret;
}
