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package main
import (
"go/build"
"io/ioutil"
"path/filepath"
"github.com/posener/complete"
)
// predictPackages completes packages in the directory pointed by a.Last
// and packages that are one level below that package.
func predictPackages(a complete.Args) (prediction []string) {
prediction = complete.PredictFilesSet(listPackages(a.Directory())).Predict(a)
if len(prediction) != 1 {
return
}
return complete.PredictFilesSet(listPackages(prediction[0])).Predict(a)
}
// listPackages looks in current pointed dir and in all it's direct sub-packages
// and return a list of paths to go packages.
func listPackages(dir string) (directories []string) {
// add subdirectories
files, err := ioutil.ReadDir(dir)
if err != nil {
complete.Log("failed reading directory %s: %s", dir, err)
return
}
// build paths array
paths := make([]string, 0, len(files)+1)
for _, f := range files {
if f.IsDir() {
paths = append(paths, filepath.Join(dir, f.Name()))
}
}
paths = append(paths, dir)
// import packages according to given paths
for _, p := range paths {
pkg, err := build.ImportDir(p, 0)
if err != nil {
complete.Log("failed importing directory %s: %s", p, err)
continue
}
directories = append(directories, pkg.Dir)
}
return
}
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