ECode FileUtils::FileComparator::Compare(
/* [in] */ IInterface* inlhs,
/* [in] */ IInterface* inrhs,
/* [out] */ Int32* result)
{
VALIDATE_NOT_NULL(result)
IFile* lhs = IFile::Probe(inlhs);
IFile* rhs = IFile::Probe(inrhs);
if (lhs == NULL && rhs == NULL) {
*result = 0;
return NOERROR;
}
if (lhs != NULL && rhs == NULL) {
*result = -1;
return NOERROR;
}
else if (lhs == NULL && rhs != NULL) {
*result = 1;
return NOERROR;
}
Int64 l, r;
lhs->GetLastModified(&l);
rhs->GetLastModified(&r);
*result = (Int32)(r - l);
return NOERROR;
}
Boolean FileUtils::DeleteOlderFiles(
/* [in] */ IFile* dir,
/* [in] */ Int32 minCount,
/* [in] */ Int64 minAge)
{
if (minCount < 0 || minAge < 0) {
// throw new IllegalArgumentException("Constraints must be positive or 0");
return FALSE;
}
AutoPtr<ArrayOf<IFile*> > files;
dir->ListFiles((ArrayOf<IFile*>**)&files);
if (files == NULL) return FALSE;
// Sort with newest files first
AutoPtr<IComparator> cmp = new FileComparator();
Arrays::Sort(files.Get(), cmp.Get());
AutoPtr<ISystem> system;
CSystem::AcquireSingleton((ISystem**)&system);
// Keep at least minCount files
Boolean deleted = FALSE, bval;
Int64 age, lastModified;
for (Int32 i = minCount; i < files->GetLength(); i++) {
IFile* file = (*files)[i];
// Keep files newer than minAge
system->GetCurrentTimeMillis(&age);
file->GetLastModified(&lastModified);
age -= lastModified;
if (age > minAge) {
if (file->Delete(&bval), bval) {
// Logger::D(TAG, "Deleted old file %s", file);
deleted = true;
}
}
}
return deleted;
}
