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package main
import (
"bytes"
"encoding/json"
"os/exec"
"strings"
"github.com/posener/complete"
)
const goListFormat = `{"Name": "{{.Name}}", "Path": "{{.Dir}}", "FilesString": "{{.GoFiles}}"}`
func predictPackages(a complete.Args) (prediction []string) {
dir := a.Directory()
pkgs := listPackages(dir)
files := make([]string, 0, len(pkgs))
for _, p := range pkgs {
files = append(files, p.Path)
}
return complete.PredictFilesSet(files).Predict(a)
}
type pack struct {
Name string
Path string
FilesString string
Files []string
}
func listPackages(dir string) (pkgs []pack) {
dir = strings.TrimRight(dir, "/") + "/..."
out, err := exec.Command("go", "list", "-f", goListFormat, dir).Output()
if err != nil {
return
}
lines := bytes.Split(out, []byte("\n"))
for _, line := range lines {
var p pack
err := json.Unmarshal(line, &p)
if err != nil {
continue
}
// parse the FileString from a string "[file1 file2 file3]" to a list of files
p.Files = strings.Split(strings.Trim(p.FilesString, "[]"), " ")
pkgs = append(pkgs, p)
}
return
}
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