forked from cerc-io/plugeth
29 lines
867 B
Go
29 lines
867 B
Go
|
// +build appengine
|
||
|
|
|
||
|
|
package maxminddb
|
||
|
|
|
||
|
|
import "io/ioutil"
|
||
|
|
|
||
|
|
// Open takes a string path to a MaxMind DB file and returns a Reader
|
||
|
|
// structure or an error. The database file is opened using a memory map,
|
||
|
|
// except on Google App Engine where mmap is not supported; there the database
|
||
|
|
// is loaded into memory. Use the Close method on the Reader object to return
|
||
|
|
// the resources to the system.
|
||
|
|
func Open(file string) (*Reader, error) {
|
||
|
|
bytes, err := ioutil.ReadFile(file)
|
||
|
|
if err != nil {
|
||
|
|
return nil, err
|
||
|
|
}
|
||
|
|
|
||
|
|
return FromBytes(bytes)
|
||
|
|
}
|
||
|
|
|
||
|
|
// Close unmaps the database file from virtual memory and returns the
|
||
|
|
// resources to the system. If called on a Reader opened using FromBytes
|
||
|
|
// or Open on Google App Engine, this method sets the underlying buffer
|
||
|
|
// to nil, returning the resources to the system.
|
||
|
|
func (r *Reader) Close() error {
|
||
|
|
r.buffer = nil
|
||
|
|
return nil
|
||
|
|
}
|