pkger/here/info.go

154 lines
2.9 KiB
Go

package here
import (
"encoding/json"
"fmt"
"os"
"path/filepath"
"regexp"
"runtime"
"strings"
"github.com/markbates/pkger/internal/takeon/github.com/markbates/hepa"
"github.com/markbates/pkger/internal/takeon/github.com/markbates/hepa/filters"
)
// Info represents details about the directory/package
type Info struct {
Dir string
ImportPath string
Name string
Imports []string
Module Module
}
func (fi Info) MarshalJSON() ([]byte, error) {
mm := map[string]interface{}{
"ImportPath": fi.ImportPath,
"Name": fi.Name,
"Imports": fi.Imports,
"Module": fi.Module,
}
hep := hepa.New()
hep = hepa.With(hep, filters.Home())
hep = hepa.With(hep, filters.Golang())
cm := map[string]string{
"Dir": fi.Dir,
}
for k, v := range cm {
b, err := hep.Filter([]byte(v))
if err != nil {
return nil, err
}
mm[k] = string(b)
}
return json.Marshal(mm)
}
func (i Info) FilePath(paths ...string) string {
res := []string{i.Dir}
for _, p := range paths {
p = strings.TrimPrefix(p, i.Dir)
p = strings.TrimPrefix(p, "/")
if runtime.GOOS == "windows" {
p = strings.Replace(p, "/", "\\", -1)
}
res = append(res, p)
}
return filepath.Join(res...)
}
func (i Info) Open(p string) (*os.File, error) {
return os.Open(i.FilePath(p))
}
// ModuleName returns the name of the current
// module, or if not using modules, the current
// package. These *might* not match.
func (i Info) ModuleName() string {
if i.Mods() {
return i.Module.Path
}
return i.ImportPath
}
// IsZero checks if the type has been filled
// with rich chocolately data goodness
func (i Info) IsZero() bool {
return i.String() == Info{}.String()
}
// Mods returns whether Go modules are used
// in this directory/package.
func (i Info) Mods() bool {
return !i.Module.IsZero()
}
func (i Info) String() string {
b, err := json.MarshalIndent(i, "", " ")
if err != nil {
return err.Error()
}
s := string(b)
return s
}
func (i Info) Parse(p string) (Path, error) {
p = strings.TrimSpace(p)
p = filepath.Clean(p)
p = strings.TrimPrefix(p, i.Dir)
p = strings.Replace(p, "\\", "/", -1)
p = strings.TrimSpace(p)
if len(p) == 0 || p == ":" {
return i.build("", "", "")
}
res := pathrx.FindAllStringSubmatch(p, -1)
if len(res) == 0 {
return Path{}, fmt.Errorf("could not parse %q", p)
}
matches := res[0]
if len(matches) != 4 {
return Path{}, fmt.Errorf("could not parse %q", p)
}
return i.build(p, matches[1], matches[3])
}
func (i Info) build(p, pkg, name string) (Path, error) {
pt := Path{
Pkg: pkg,
Name: name,
}
if strings.HasPrefix(pt.Pkg, "/") || len(pt.Pkg) == 0 {
pt.Name = pt.Pkg
pt.Pkg = i.ImportPath
}
if len(pt.Name) == 0 {
pt.Name = "/"
}
if pt.Pkg == pt.Name {
pt.Pkg = i.ImportPath
pt.Name = "/"
}
if !strings.HasPrefix(pt.Name, "/") {
pt.Name = "/" + pt.Name
}
pt.Name = strings.TrimPrefix(pt.Name, i.Dir)
return pt, nil
}
var pathrx = regexp.MustCompile("([^:]+)(:(/.+))?")