41 lines
1014 B
Go
41 lines
1014 B
Go
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package charset
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import (
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"io"
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"io/ioutil"
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"os"
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"path/filepath"
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)
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var files = make(map[string]func() (io.ReadCloser, error))
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// RegisterDataFile registers the existence of a given data
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// file with the given name that may be used by a character-set converter.
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// It is intended to be used by packages that wish to embed
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// data in the executable binary, and should not be
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// used normally.
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func RegisterDataFile(name string, open func() (io.ReadCloser, error)) {
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files[name] = open
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}
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// CharsetDir gives the location of the default data file directory.
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// This directory will be used for files with names that have not
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// been registered with RegisterDataFile.
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var CharsetDir = "/usr/local/lib/go-charset/datafiles"
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func readFile(name string) (data []byte, err error) {
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var r io.ReadCloser
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if open := files[name]; open != nil {
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r, err = open()
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if err != nil {
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return
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}
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} else {
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r, err = os.Open(filepath.Join(CharsetDir, name))
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if err != nil {
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return
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}
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}
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return ioutil.ReadAll(r)
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}
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