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profuse
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unlink support 

git-svn-id: https://profuse.googlecode.com/svn/branches/v2@251 aa027e90-d47c-11dd-86d7-074df07e0730
This commit is contained in:
ksherlock 2010-05-21 21:22:30 +00:00
parent a7a625dc3f
commit 433ed40922
1 changed files with 44 additions and 2 deletions
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46
Pascal/VolumeEntry.cpp
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@ -200,8 +200,6 @@ FileEntry *VolumeEntry::fileAtIndex(unsigned i) const
FileEntry *VolumeEntry::fileByName(const char *name) const
{
std::vector<FileEntry *>::const_iterator iter;
for(iter = _files.begin(); iter != _files.end(); ++iter)
{
@ -211,7 +209,51 @@ FileEntry *VolumeEntry::fileByName(const char *name) const
return NULL;
}
void VolumeEntry::unlink(const char *name)
{
unsigned index;
for(index = 0; index < _fileCount; ++index)
{
FileEntry *e = _files[index];
if (::strcasecmp(name, e->name()) == 0)
{
delete e;
_files[index] = NULL;
break;
}
}
if (index == _fileCount) return; // not found.
_files.erase(files.begin() + index);
_fileCount--;
// need to update the header blocks.
unsigned blockCount = blocks();
auto_array<uint8_t> buffer(new uint8_t[512 * blocks]);
// load up blocks.
// since entries span blocks, we can't do this via pointer.
for (unsigned i = 0; i < blockCount; ++i)
{
_cache->read(2 + i, buffer.get() + 512 * i);
}
// update the filecount.
IOBuffer b(buffer.get());
writeDirectoryEntry(b);
// move up all the entries.
uint8_t *address = buffer.get() + 0x1a + 0x1a * index;
std::memmove(address, address + 0x1a, 0x1a * (_fileCount - index));
// zero out the memory on the previous entry.
std::memset(buffer.get() + 0x1a + _fileCount * 0x1a, 0, 0x1a);
// now write to disk.
for (unsigned i = 0; i < blockCount; ++i)
{
_cache->write(2 + i, buffer.get() + 512 * i);
}
}
void *VolumeEntry::loadBlock(unsigned block)
{