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29 lines
873 B
29 lines
873 B
// +build appengine plan9
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package maxminddb
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import "io/ioutil"
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// Open takes a string path to a MaxMind DB file and returns a Reader
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// structure or an error. The database file is opened using a memory map,
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// except on Google App Engine where mmap is not supported; there the database
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// is loaded into memory. Use the Close method on the Reader object to return
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// the resources to the system.
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func Open(file string) (*Reader, error) {
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bytes, err := ioutil.ReadFile(file)
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if err != nil {
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return nil, err
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}
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return FromBytes(bytes)
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}
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// Close unmaps the database file from virtual memory and returns the
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// resources to the system. If called on a Reader opened using FromBytes
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// or Open on Google App Engine, this method sets the underlying buffer
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// to nil, returning the resources to the system.
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func (r *Reader) Close() error {
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r.buffer = nil
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return nil
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}
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