long low_dircount(RDWRHandle handle, CLUSTER cluster, char attribute)
{
int fatlabelsize;
struct PipeStruct pipe, *ppipe = &pipe;
if (cluster == 0)
{
fatlabelsize = GetFatLabelSize(handle);
switch (fatlabelsize)
{
case FAT12:
case FAT16:
return CountEntriesInRootDirectory(handle, attribute);
case FAT32:
cluster = GetFAT32RootCluster(handle);
if (cluster)
break;
else
return FAIL;
default:
return FAIL;
}
}
pipe.count = 0;
pipe.attribute = attribute;
if (!TraverseSubdir(handle, cluster, counter, (void**) &ppipe, TRUE))
return FAIL;
return pipe.count;
}
BOOL GetNthDirectoryPosition(RDWRHandle handle, CLUSTER cluster,
unsigned long n, struct DirectoryPosition* result)
{
int fatlabelsize;
struct Pipe pipe, *ppipe = &pipe;
pipe.n = n;
pipe.counter = 0;
pipe.pos = result;
if (cluster == 0)
{
fatlabelsize = GetFatLabelSize(handle);
switch (fatlabelsize)
{
case FAT12:
case FAT16:
{
BOOL retVal;
struct DirectoryPosition pos;
struct DirectoryEntry* entry;
retVal = GetRootDirPosition(handle, (unsigned short) n,
&pos);
if (retVal)
{
entry = AllocateDirectoryEntry();
if (!entry) return FALSE;
if (!GetDirectory(handle, &pos, entry))
{
FreeDirectoryEntry(entry);
return FALSE;
}
if (entry->filename[0] != LASTLABEL)
{
memcpy(result, &pos, sizeof(struct DirectoryPosition));
}
FreeDirectoryEntry(entry);
}
return retVal;
}
case FAT32:
cluster = GetFAT32RootCluster(handle);
if (cluster)
break;
else
return FALSE;
default:
return FALSE;
}
}
return TraverseSubdir(handle, cluster, positiongetter, (void**) &ppipe,
TRUE);
}
BOOL RemoveInvalidLFNs(RDWRHandle handle, CLUSTER firstcluster,
struct DirectoryPosition* pos1,
struct DirectoryPosition* pos2)
{
struct RemovePipe pipe, *ppipe = &pipe;
pipe.begin = pos1;
pipe.end = pos2;
return TraverseSubdir(handle, firstcluster, LFNRemover, (void**) &ppipe,
TRUE);
}
BOOL GetNthSubDirectoryPosition(RDWRHandle handle, CLUSTER cluster,
unsigned long n,
struct DirectoryPosition* result)
{
struct Pipe pipe, *ppipe = &pipe;
pipe.n = n;
pipe.counter = 0;
pipe.pos = result;
return TraverseSubdir(handle, cluster, SubdirGetter, (void**) &ppipe,
TRUE);
}
BOOL LoFileNameExists(RDWRHandle handle, CLUSTER firstcluster,
char* filename, char* extension)
{
struct Pipe pipe, *ppipe = &pipe;
pipe.filename = filename;
pipe.extension = extension;
pipe.exists = FALSE;
if (!TraverseSubdir(handle, firstcluster, ExistanceChecker,
(void**) &ppipe, TRUE))
RETURN_FTEERROR(FAIL);
return pipe.exists;
}
int SearchDirectory(RDWRHandle handle, char* dir, CLUSTER* fatcluster,
struct DirectoryPosition* pos,
int func(RDWRHandle handle,
struct DirectoryPosition* pos,
struct DirectoryEntry* entry))
{
int i, j;
struct PipeStruct pipe, *ppipe = &pipe;
char filename[8], extension[3];
pipe.found = FALSE;
pipe.filename = filename;
pipe.extension = extension;
pipe.error = FALSE;
pipe.func = func;
memset(filename, ' ', 8);
for (i = 0; i < 8; i++)
if ((dir[i] == '.') || (dir[i] == '\0'))
break;
else
filename[i] = dir[i];
memset(extension, ' ', 3);
for (j = 0; j < 3; j++)
if (dir[i+j] == '.')
continue;
else if (dir[i+j] == '\0')
break;
else
extension[j] = dir[i];
if (IsRootDirPosition(handle, pos))
{
if (!TraverseRootDir(handle, DirSearcher,
(void**) &ppipe, TRUE)) return FALSE;
return pipe.found;
}
else
{
if (!TraverseSubdir(handle, *fatcluster, DirSearcher,
(void**) &ppipe, TRUE)) return FALSE;
return pipe.found;
}
}
static int getentry(RDWRHandle handle,
CLUSTER cluster,
int slotorentry,
unsigned entry,
unsigned slot,
struct DirectoryEntry* result)
{
struct Pipe pipe, *ppipe = &pipe;
pipe.slotorentry = slotorentry;
pipe.entrynr = entry;
pipe.slot = slot;
pipe.ecounter = 0;
pipe.scounter = 0;
pipe.entry = result;
return TraverseSubdir(handle, cluster, entrygetter, (void**) &ppipe, TRUE);
}
BOOL WalkDirectoryTree(RDWRHandle handle,
int (*func) (RDWRHandle handle,
struct DirectoryPosition* position,
void** structure),
void** structure)
{
int top = 0;
struct StackElement* stack;
CLUSTER cluster = 0, temp;
unsigned long current = 0;
struct DirectoryPosition pos;
struct DirectoryEntry* entry;
struct StackElement element;
struct PipeStruct pipe, *ppipe = &pipe;
pipe.func = func;
pipe.structure = structure;
pipe.stop = FALSE;
if (!TraverseRootDir(handle, ActionWalker, (void**)&ppipe, TRUE))
return FALSE;
if (pipe.stop)
return TRUE;
stack = (struct StackElement*)FTEAlloc(DIR_STACK_DEPTH * sizeof(struct StackElement));
if (!stack)
return FALSE;
for (;;)
{
/* If there still are sub directories in this directory,
push the cluster of that directory. */
pos.sector = 0;
pos.offset = 0;
if (!GetNthSubDirectoryPosition(handle, cluster, current, &pos))
{
FTEFree(stack);
return FALSE;
}
if ((pos.sector != 0) || (pos.offset != 0))
{
entry = AllocateDirectoryEntry();
if (!entry)
{
FTEFree(stack);
return FALSE;
}
if (top < DIR_STACK_DEPTH)
{
element.cluster = cluster;
element.index = current;
PushDirectoryEntry(stack, &top, &element);
}
else
{
FreeDirectoryEntry(entry); /* Directory level to deep!? */
FTEFree(stack);
return FALSE;
}
if (!GetDirectory(handle, &pos, entry))
{
FreeDirectoryEntry(entry);
FTEFree(stack);
return FALSE;
}
/* Descend in the directory tree and call the function
for every directory entry in that directory. */
temp = GetFirstCluster(entry);
/* Don't descend in any directory that is invalid. */
if (temp && FAT_NORMAL(temp) && IsLabelValid(handle, temp))
{
current = 0;
cluster = temp;
if (!TraverseSubdir(handle, cluster, ActionWalker, (void**) &ppipe, TRUE))
{
FreeDirectoryEntry(entry);
FTEFree(stack);
return FALSE;
}
if (pipe.stop)
{
FreeDirectoryEntry(entry);
FTEFree(stack);
return TRUE;
}
}
else /* cluster not valid, leave this directory */
{
if (top-1 > 0) /* Be carefull when there are no sub directories
in the volume. */
{
PopDirectoryEntry(stack, &top, &element);
PopDirectoryEntry(stack, &top, &element);
current = element.index+1; /* Then find the next sub directory. */
cluster = element.cluster;
}
else
{
FreeDirectoryEntry(entry);
break;
}
}
FreeDirectoryEntry(entry);
}
/* If there are no more sub directories in the current directory,
pop the current directory from the stack. */
else
{
if (top) /* Be carefull when there are no sub directories
in the volume. */
{
PopDirectoryEntry(stack, &top, &element);
current = element.index+1; /* Then find the next sub directory. */
cluster = element.cluster;
}
else
{
break;
}
}
}
FTEFree(stack);
return TRUE;
}
static BOOL FilesSummaryGetter(RDWRHandle handle,
struct DirectoryPosition* position,
struct DirectoryEntry* entry,
void** structure)
{
CLUSTER firstcluster;
struct FilesSummary** info = (struct FilesSummary**) structure;
unsigned long dirsize=0, *pdirsize = &dirsize, bytespercluster, labelsinfat;
position = position;
bytespercluster = GetSectorsPerCluster(handle) * BYTESPERSECTOR;
if (!bytespercluster) return FAIL;
if (entry->attribute & FA_LABEL)
return TRUE;
if (IsLFNEntry(entry))
return TRUE;
if (IsDeletedLabel(*entry))
return TRUE;
if (entry->attribute & FA_DIREC)
{
if (IsCurrentDir(*entry)) return TRUE;
if (IsPreviousDir(*entry)) return TRUE;
(*info)->DirectoryCount++;
labelsinfat = GetLabelsInFat(handle);
if (!labelsinfat) return FAIL;
fatmap = CreateBitField(labelsinfat);
if (!fatmap) return FAIL;
firstcluster = GetFirstCluster(entry);
if (!TraverseSubdir(handle, firstcluster, DirSizeGetter,
(void**) &pdirsize, FALSE))
{
return FAIL;
}
DestroyBitfield(fatmap);
AddUlongLong(&(*info)->SizeOfDirectories[0],dirsize);
return TRUE; /* Not taking directories into account when
gathering information on files. */
}
(*info)->TotalFileCount++;
AddUlongLong(&(*info)->TotalSizeofFiles[0],entry->filesize);
AddUlongLong(&(*info)->SizeOfAllFiles[0],
CalculateClustersSize(entry->filesize, bytespercluster));
if (entry->attribute & FA_SYSTEM)
{
(*info)->SystemFileCount++;
AddUlongLong(&(*info)->SizeOfSystemFiles[0],
CalculateClustersSize(entry->filesize, bytespercluster));
}
if (entry->attribute & FA_HIDDEN)
{
(*info)->HiddenFileCount++;
AddUlongLong(&(*info)->SizeOfHiddenFiles[0],
CalculateClustersSize(entry->filesize, bytespercluster));
}
return TRUE;
}
