forked from bartke/packr
/
finder.go
101 lines (87 loc) · 2.05 KB
/
finder.go
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package parser
import (
"fmt"
"go/build"
"path/filepath"
"strings"
"time"
"github.com/bitgaming/packr/v2/plog"
"github.com/karrick/godirwalk"
"github.com/markbates/oncer"
"github.com/pkg/errors"
)
type finder struct {
id time.Time
}
func (fd *finder) key(m, dir string) string {
return fmt.Sprintf("%s-*parser.finder#%s-%s", fd.id, m, dir)
}
// findAllGoFiles *.go files for a given diretory
func (fd *finder) findAllGoFiles(dir string) ([]string, error) {
var err error
var names []string
oncer.Do(fd.key("findAllGoFiles", dir), func() {
plog.Debug(fd, "findAllGoFiles", "dir", dir)
callback := func(path string, do *godirwalk.Dirent) error {
ext := filepath.Ext(path)
if ext != ".go" {
return nil
}
names = append(names, path)
return nil
}
err = godirwalk.Walk(dir, &godirwalk.Options{
FollowSymbolicLinks: true,
Callback: callback,
})
})
return names, err
}
func (fd *finder) findAllGoFilesImports(dir string) ([]string, error) {
var err error
var names []string
oncer.Do(fd.key("findAllGoFilesImports", dir), func() {
ctx := build.Default
if len(ctx.SrcDirs()) == 0 {
err = errors.New("no src directories found")
return
}
pkg, err := ctx.ImportDir(dir, 0)
if strings.HasPrefix(pkg.ImportPath, "github.com/gobuffalo/packr") {
return
}
if err != nil {
if !strings.Contains(err.Error(), "cannot find package") {
if _, ok := errors.Cause(err).(*build.NoGoError); !ok {
err = err
return
}
}
}
if pkg.Goroot {
return
}
if len(pkg.GoFiles) <= 0 {
return
}
plog.Debug(fd, "findAllGoFilesImports", "dir", dir)
names, _ = fd.findAllGoFiles(dir)
for _, n := range pkg.GoFiles {
names = append(names, filepath.Join(pkg.Dir, n))
}
for _, imp := range pkg.Imports {
if len(ctx.SrcDirs()) == 0 {
continue
}
d := ctx.SrcDirs()[len(ctx.SrcDirs())-1]
ip := filepath.Join(d, imp)
n, err := fd.findAllGoFilesImports(ip)
if err != nil && len(n) != 0 {
names = n
return
}
names = append(names, n...)
}
})
return names, err
}