diff options
Diffstat (limited to 'vendor/github.com/oschwald/maxminddb-golang/reader_other.go')
-rw-r--r-- | vendor/github.com/oschwald/maxminddb-golang/reader_other.go | 63 |
1 files changed, 0 insertions, 63 deletions
diff --git a/vendor/github.com/oschwald/maxminddb-golang/reader_other.go b/vendor/github.com/oschwald/maxminddb-golang/reader_other.go deleted file mode 100644 index 2a89fa6..0000000 --- a/vendor/github.com/oschwald/maxminddb-golang/reader_other.go +++ /dev/null @@ -1,63 +0,0 @@ -// +build !appengine - -package maxminddb - -import ( - "os" - "runtime" -) - -// 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) { - mapFile, err := os.Open(file) - if err != nil { - return nil, err - } - defer func() { - if rerr := mapFile.Close(); rerr != nil { - err = rerr - } - }() - - stats, err := mapFile.Stat() - if err != nil { - return nil, err - } - - fileSize := int(stats.Size()) - mmap, err := mmap(int(mapFile.Fd()), fileSize) - if err != nil { - return nil, err - } - - reader, err := FromBytes(mmap) - if err != nil { - if err2 := munmap(mmap); err2 != nil { - // failing to unmap the file is probably the more severe error - return nil, err2 - } - return nil, err - } - - reader.hasMappedFile = true - runtime.SetFinalizer(reader, (*Reader).Close) - return reader, err -} - -// 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 does nothing. -func (r *Reader) Close() error { - var err error - if r.hasMappedFile { - runtime.SetFinalizer(r, nil) - r.hasMappedFile = false - err = munmap(r.buffer) - } - r.buffer = nil - return err -} |