/
main.go
89 lines (77 loc) · 1.67 KB
/
main.go
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package main
import (
"flag"
"fmt"
"go/build"
"io/ioutil"
"log"
"os"
"os/exec"
"path/filepath"
"strings"
)
func main() {
list := flag.Bool("ls", false, "only list imports, don't fetch")
flag.Parse()
pwd, err := filepath.Abs(".")
if err != nil {
log.Fatal(err)
}
pkgs := []*build.Package{}
pkgs, err = addPackages(pkgs, ".", pwd)
if err != nil {
log.Fatal(err)
}
s := newSet()
for _, pkg := range pkgs {
addExternalImports(s, pkg.Imports, pkgs)
addExternalImports(s, pkg.TestImports, pkgs)
}
for _, imp := range s.elements() {
if *list {
fmt.Println(imp)
} else {
cmd := exec.Command("gvt", "fetch", imp)
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
cmd.Run()
}
}
}
func addPackages(pkgs []*build.Package, path string, srcDir string) ([]*build.Package, error) {
pkg, err := build.Import(path, srcDir, 0)
if err == nil {
pkgs = append(pkgs, pkg)
}
filesInfo, err := ioutil.ReadDir(pkg.Dir)
if err != nil {
return pkgs, err
}
for _, info := range filesInfo {
fileName := info.Name()
isHidden := fileName[0] == 46
isVendor := fileName == "vendor"
if !isHidden && !isVendor && info.IsDir() {
pkgPath := fmt.Sprintf("%s/%s", path, fileName)
pkgs, err = addPackages(pkgs, pkgPath, srcDir)
if err != nil {
return pkgs, err
}
}
}
return pkgs, nil
}
func addExternalImports(s *set, imports []string, pkgs []*build.Package) {
for _, name := range imports {
imp, err := build.Import(name, ".", 0)
isInternal := false
for _, pkg := range pkgs {
if strings.HasPrefix(imp.ImportPath, pkg.ImportPath) {
isInternal = true
}
}
if err != nil || !imp.Goroot && !isInternal {
s.add(imp.ImportPath)
}
}
}