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package charset
import (
"io"
"io/ioutil"
"os"
"path/filepath"
)
var files = make(map[string]func() (io.ReadCloser, error))
// RegisterDataFile registers the existence of a given data
// file with the given name that may be used by a character-set converter.
// It is intended to be used by packages that wish to embed
// data in the executable binary, and should not be
// used normally.
func RegisterDataFile(name string, open func() (io.ReadCloser, error)) {
files[name] = open
}
// CharsetDir gives the location of the default data file directory.
// This directory will be used for files with names that have not
// been registered with RegisterDataFile.
var CharsetDir = "../../datafiles"
func readFile(name string) (data []byte, err error) {
var r io.ReadCloser
if open := files[name]; open != nil {
r, err = open()
if err != nil {
return
}
} else {
r, err = os.Open(filepath.Join(CharsetDir, name))
if err != nil {
return
}
}
return ioutil.ReadAll(r)
}
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