bindata/README
2011-11-02 16:41:07 +01:00

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bindata
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This tool converts any file into managable Go source code. Useful for embedding
binary data into a go program. The file data is gzip compressed before being
converted to a raw byte slice.
If gofmt is available on the system, bindata will invoke it to format the
generated go file.
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DEPENDENCIES
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n/a
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USAGE
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$ goinstall github.com/jteeuwen/go-bindata
The simplest invocation is to pass it only the input file name.
The output file and code settings are inferred from this automatically.
$ bindata -i testdata/gophercolor.png
[w] No output file specified. Using 'testdata/gophercolor.png.go'.
[w] No package name specified. Using 'main'.
[w] No function name specified. Using 'gophercolor_png'.
[i] Done.
This creates the "testdata/gophercolor.png.go" file which has a package
declaration with name 'main' and one function named 'gophercolor_png'.
It looks like this:
func gophercolor_png() ([]byte, error) {
var gz *gzip.Decompressor
var err error
if gz, err = gzip.NewReader(bytes.NewBuffer([]byte{
...
})); err != nil {
return nil, err
}
var b bytes.Buffer
io.Copy(&b, gz)
gz.Close()
return b.Bytes(), nil
}
You can now simply include the new .go file in your program and call
gophercolor_png() to get the uncompressed image data.
See the testdata directory for example input and output.
Aternatively, you can pipe the input file data into stdin. bindata will then
spit out the generated Go code to stdout. This does require explicitly naming
the desired function name, as it can not be inferred from the input data.
The package name will still default to 'main'.
$ cat testdata/gophercolor.png | ./bindata -f gophercolor_png | gofmt
Invoke the program with the -h flag for more options.