-
Notifications
You must be signed in to change notification settings - Fork 19
/
filter.go
48 lines (44 loc) · 1.2 KB
/
filter.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
package filesystem
import (
"path"
"github.com/Symantec/Dominator/lib/filter"
)
func (fs *FileSystem) filter(filter *filter.Filter) *FileSystem {
if filter == nil {
return fs
}
if err := fs.RebuildInodePointers(); err != nil {
panic(err)
}
newFS := new(FileSystem)
newFS.InodeTable = make(InodeTable)
newFS.DirectoryInode = *fs.DirectoryInode.filter(newFS, filter, "/")
newFS.ComputeTotalDataBytes()
return newFS
}
func (inode *DirectoryInode) filter(newFS *FileSystem,
filter *filter.Filter, name string) *DirectoryInode {
newInode := new(DirectoryInode)
newInode.Mode = inode.Mode
newInode.Uid = inode.Uid
newInode.Gid = inode.Gid
for _, entry := range inode.EntryList {
subName := path.Join(name, entry.Name)
if filter.Match(subName) {
continue
}
var newEntry *DirectoryEntry
if inode, ok := entry.inode.(*DirectoryInode); ok {
newEntry = new(DirectoryEntry)
newEntry.Name = entry.Name
newEntry.InodeNumber = entry.InodeNumber
newEntry.inode = inode.filter(newFS, filter, subName)
} else {
newEntry = entry
}
newInode.EntryList = append(newInode.EntryList, newEntry)
newFS.InodeTable[entry.InodeNumber] = newEntry.inode
}
newFS.DirectoryCount++
return newInode
}