/usr/share/gocode/src/github.com/constabulary/gb/internal/vendor/depset.go is in golang-github-constabulary-gb-dev 0.4.4-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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import (
"go/build"
"os"
"path/filepath"
"strings"
"github.com/pkg/errors"
)
// Pkg describes a Go package.
type Pkg struct {
*Depset
*build.Package
}
// Depset describes a set of related Go packages.
type Depset struct {
Root string
Prefix string
Pkgs map[string]*Pkg
}
// LoadPaths returns a map of paths to Depsets.
func LoadPaths(paths ...struct{ Root, Prefix string }) (map[string]*Depset, error) {
m := make(map[string]*Depset)
for _, p := range paths {
set, err := LoadTree(p.Root, p.Prefix)
if err != nil {
return nil, err
}
m[set.Root] = set
}
return m, nil
}
// LoadTree parses a tree of source files into a map of *pkgs.
func LoadTree(root string, prefix string) (*Depset, error) {
d := Depset{
Root: root,
Prefix: prefix,
Pkgs: make(map[string]*Pkg),
}
fn := func(dir string, fi os.FileInfo) error {
importpath := filepath.Join(prefix, dir[len(root)+1:])
// if we're at the root of a tree, skip it
if importpath == "" {
return nil
}
p, err := loadPackage(&d, dir)
if err != nil {
if _, ok := err.(*build.NoGoError); ok {
return nil
}
return errors.Wrapf(err, "loadPackage(%q, %q)", dir, importpath)
}
p.ImportPath = filepath.ToSlash(importpath)
if p != nil {
d.Pkgs[p.ImportPath] = p
}
return nil
}
// handle root of the tree
fi, err := os.Stat(root)
if err != nil {
// some paths may not exist, for example $GOROOT/src/vendor on Go < 1.6
if os.IsNotExist(err) {
return &d, nil
}
return nil, err
}
if err := fn(root+string(filepath.Separator), fi); err != nil {
return nil, err
}
// walk sub directories
err = eachDir(root, fn)
return &d, err
}
func loadPackage(d *Depset, dir string) (*Pkg, error) {
p := Pkg{
Depset: d,
}
var err error
// expolit local import logic
p.Package, err = build.ImportDir(dir, build.ImportComment)
return &p, err
}
func eachDir(dir string, fn func(string, os.FileInfo) error) error {
f, err := os.Open(dir)
if err != nil {
return err
}
defer f.Close()
files, err := f.Readdir(-1)
for _, fi := range files {
if !fi.IsDir() {
continue
}
if strings.HasPrefix(fi.Name(), "_") || strings.HasPrefix(fi.Name(), ".") || fi.Name() == "testdata" {
continue
}
path := filepath.Join(dir, fi.Name())
if err := fn(path, fi); err != nil {
return err
}
if err := eachDir(path, fn); err != nil {
return err
}
}
return nil
}
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