/*
* computes a checksum (we call it fingerprint) on all the catalog-keys. We do
* not include the values, since we want catalogs for different languages of the
* same app to have the same fingerprint, since we use it to separate different
* catalog-versions. We use a simple sum because there is no well known
* checksum algorithm that gives the same result if the string are sorted in the
* wrong order, and this does happen, as an hash map is an unsorted container.
*/
uint32
BHashMapCatalog::ComputeFingerprint() const
{
uint32 checksum = 0;
int32 hash;
CatMap::Iterator iter = fCatMap.GetIterator();
CatMap::Entry entry;
while (iter.HasNext())
{
entry = iter.Next();
hash = entry.key.fHashVal;
checksum += hash;
}
return checksum;
}
status_t
DefaultCatalog::Flatten(BDataIO *dataIO)
{
UpdateFingerprint();
// make sure we have the correct fingerprint before we flatten it
status_t res;
BMessage archive;
int32 count = fCatMap.Size();
res = archive.AddString("class", "DefaultCatalog");
if (res == B_OK)
res = archive.AddInt32("c:sz", count);
if (res == B_OK)
res = archive.AddInt16("c:ver", kCatArchiveVersion);
if (res == B_OK)
res = archive.AddString("c:lang", fLanguageName.String());
if (res == B_OK)
res = archive.AddString("c:sig", fSignature.String());
if (res == B_OK)
res = archive.AddInt32("c:fpr", fFingerprint);
if (res == B_OK)
res = archive.Flatten(dataIO);
CatMap::Iterator iter = fCatMap.GetIterator();
CatMap::Entry entry;
while (res == B_OK && iter.HasNext()) {
entry = iter.Next();
archive.MakeEmpty();
res = archive.AddString("c:ostr", entry.key.fString.String());
if (res == B_OK)
res = archive.AddString("c:ctxt", entry.key.fContext.String());
if (res == B_OK)
res = archive.AddString("c:comt", entry.key.fComment.String());
if (res == B_OK)
res = archive.AddInt32("c:hash", entry.key.fHashVal);
if (res == B_OK)
res = archive.AddString("c:tstr", entry.value.String());
if (res == B_OK)
res = archive.Flatten(dataIO);
}
return res;
}