file_info_t * file_query( OBJECT * const path )
{
/* FIXME: Add tracking for disappearing files (i.e. those that can not be
* detected by stat() even though they had been detected successfully
* before) and see how they should be handled in the rest of Boost Jam code.
* Possibly allow Jamfiles to specify some files as 'volatile' which would
* make Boost Jam avoid caching information about those files and instead
* ask the OS about them every time.
*/
int found;
file_info_t * const ff = file_info( path, &found );
if ( !found )
{
file_query_( ff );
if ( ff->exists )
{
/* Set the path's timestamp to 1 in case it is 0 or undetected to avoid
* confusion with non-existing paths.
*/
if ( timestamp_empty( &ff->time ) )
timestamp_init( &ff->time, 1, 0 );
}
}
if ( !ff->exists )
{
return 0;
}
return ff;
}
file_info_t * file_query( OBJECT * const path )
{
/* FIXME: Add tracking for disappearing files (i.e. those that can not be
* detected by stat() even though they had been detected successfully
* before) and see how they should be handled in the rest of Boost Jam code.
* Possibly allow Jamfiles to specify some files as 'volatile' which would
* make Boost Jam avoid caching information about those files and instead
* ask the OS about them every time.
*
* FIXME: Consider returning a clear file_info() result here if
* file_query_() fails. Should simplify the caller side error checking and
* the caller still can and needs to detect whether the file has not been
* successfully detected by the OS, i.e. whether the file_query() call
* failed.
*/
file_info_t * const ff = file_info( path );
if ( timestamp_empty( &ff->time ) )
{
if ( file_query_( ff ) < 0 )
return 0;
/* Set the path's timestamp to 1 in case it is 0 or undetected to avoid
* confusion with non-existing paths.
*/
if ( timestamp_empty( &ff->time ) )
timestamp_init( &ff->time, 1, 0 );
}
return ff;
}