/
core.go
100 lines (87 loc) · 1.69 KB
/
core.go
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package vcs
import (
"fmt"
"go/build"
"os"
"path/filepath"
)
type Dependency interface {
Root() string
IsClean() bool
Rev() string
}
func findAllImports(pkg *build.Package, seen map[string]*build.Package) error {
_, ok := seen[pkg.Dir]
if ok {
return nil
}
seen[pkg.Dir] = pkg
for _, imp := range pkg.Imports {
if imp == "C" {
continue
}
cp, err := build.Import(imp, pkg.Dir, 0)
if err != nil {
return err
}
err = findAllImports(cp, seen)
if err != nil {
return err
}
}
return nil
}
func FindRepos(from string) ([]Dependency, error) {
pkg, err := build.ImportDir(from, 0)
if err != nil {
return nil, fmt.Errorf("unable to load package at %s: %s", from, err)
}
imports := make(map[string]*build.Package)
err = findAllImports(pkg, imports)
if err != nil {
return nil, err
}
delete(imports, pkg.Dir)
repos := make(map[string]Dependency)
for _, val := range imports {
if !val.Goroot {
repo, err := FindRepo(val)
if err != nil {
return nil, err
}
repos[repo.Root()] = repo
}
}
rs := make([]Dependency, 0, 0)
for _, val := range repos {
rs = append(rs, val)
}
return rs, nil
}
func isGit(dir string) bool {
git_dir := fmt.Sprintf("%s/.git", dir)
fi, err := os.Stat(git_dir)
if err != nil {
if os.IsNotExist(err) {
return false
}
}
if fi.IsDir() {
return true
}
return false
}
func FindRepoForPath(dir string) (Dependency, error) {
dir = filepath.Clean(dir)
if dir == "/" {
return nil, fmt.Errorf("No repo found")
}
if isGit(dir) {
return CreateGitRepo(dir)
}
parent, _ := filepath.Split(dir)
return FindRepoForPath(parent)
}
func FindRepo(pkg *build.Package) (Dependency, error) {
return FindRepoForPath(pkg.Dir)
}