generate bytes

[speier]

public method to return output bytes instead of writing directly to file, can be useful to use the output in various ways during generation before writing to file.

same signature as Generate(), for example:

err := vfsgen.GenerateBytes(http.Dir("assets"), vfsgen.Options{})

[dmitshur]

can be useful to use the output in various ways during generation

Can you please elaborate on the use case? What problem is the new API intending to solve? Thanks.

[speier]

in my case for example, i'm appending an additional func to the end of the output before writing to file...

main.go

var assets http.FileSystem = http.Dir("dist")

assets_generate.go

b, err := vfsgen.GenerateBytes(http.Dir(“/tmp/build/dist”), vfsgen.Options{
    VariableName: "assetsFS",
})
...
writeStub(b) // append init stub and write output to file

output assets_vfsdata.go

var assetsFS = func() http.FileSystem { .... }()
...
func init() { assets = assetsFS }

with this i can "override" the assets variable specified in main without build tags.
bit hacky but this worked best in our CI pipeline with Bazel build.