78 lines
1.5 KiB
Go
78 lines
1.5 KiB
Go
package fs
|
|
|
|
import (
|
|
"strings"
|
|
)
|
|
|
|
// Blacklists represents multiple blacklists.
|
|
type Blacklists map[string]Blacklist
|
|
|
|
// NewBlacklists creates and initializes file extension blacklists.
|
|
func NewBlacklists() Blacklists {
|
|
return make(Blacklists)
|
|
}
|
|
|
|
// Blacklist represents a file extension blacklist.
|
|
type Blacklist map[string]bool
|
|
|
|
// NewBlacklist creates and initializes a file extension blacklist.
|
|
func NewBlacklist(extensions string) Blacklist {
|
|
list := make(Blacklist)
|
|
if extensions != "" {
|
|
list.Set(extensions)
|
|
}
|
|
return list
|
|
}
|
|
|
|
// Contains tests if a file extension is blacklisted.
|
|
func (b Blacklist) Contains(ext string) bool {
|
|
// Skip check if list is empty.
|
|
if len(b) == 0 {
|
|
return false
|
|
}
|
|
|
|
// Remove unwanted characters from file extension and make it lowercase for comparison.
|
|
ext = TrimExt(ext)
|
|
|
|
// Skip check if extension is empty.
|
|
if ext == "" {
|
|
return false
|
|
}
|
|
|
|
if _, ok := b[ext]; ok {
|
|
return true
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
// Allow tests if a file extension is NOT blacklisted.
|
|
func (b Blacklist) Allow(ext string) bool {
|
|
return !b.Contains(ext)
|
|
}
|
|
|
|
// Set initializes the blacklist with a list of file extensions.
|
|
func (b Blacklist) Set(extensions string) {
|
|
if extensions == "" {
|
|
return
|
|
}
|
|
|
|
ext := strings.Split(extensions, ",")
|
|
|
|
for i := range ext {
|
|
b.Add(ext[i])
|
|
}
|
|
}
|
|
|
|
// Add adds a file extension to the blacklist.
|
|
func (b Blacklist) Add(ext string) {
|
|
// Remove unwanted characters from file extension and make it lowercase for comparison.
|
|
ext = TrimExt(ext)
|
|
|
|
if ext == "" {
|
|
return
|
|
}
|
|
|
|
b[ext] = true
|
|
}
|