to see you eat in the middle of the night

Author: markbates

examples/http/pkger/go.mod

@@ -2,4 +2,6 @@ module app
 
 go 1.13
 
-require github.com/markbates/pkger v0.0.0-20191016200917-09e9684b656b
+require github.com/markbates/pkger v0.5.0
+
+replace github.com/markbates/pkger => ../../../

examples/http/pkger/go.sum

@@ -6,8 +6,6 @@ github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORN
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
-github.com/markbates/pkger v0.0.0-20191016200917-09e9684b656b h1:cXYQ3JZQkRLFyN8m22Q58mOhdKyTooPqvGt8pyWR8eA=
-github.com/markbates/pkger v0.0.0-20191016200917-09e9684b656b/go.mod h1:0nBNvgA9jJk9gWhO/BcIYz1qJ8BJ0MWCSyKFPApdWNs=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
@@ -18,3 +16,5 @@ gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.4 h1:/eiJrUcujPVeJ3xlSWaiNi3uSVmDGBK1pDHUHAnao1I=
+gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

examples/http/pkger/main.go

@@ -14,10 +14,9 @@ func main() {
 }
 
 func run() error {
-	f, err := pkger.Open("/public")
+	dir, err := pkger.HTTP("/public")
 	if err != nil {
 		return err
 	}
-	dir := http.FileServer(f)
 	return http.ListenAndServe(":3000", dir)
 }

examples/walk/std/go.mod

@@ -1,3 +1,5 @@
 module app
 
 go 1.13
+
+require github.com/markbates/pkger v0.4.0 // indirect

examples/walk/std/go.sum

@@ -0,0 +1,18 @@
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
+github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
+github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
+github.com/markbates/pkger v0.4.0 h1:fIzmOXYsJV+nFS+RtsmWZvXeH5DDGQtF/SwKJgfgVoE=
+github.com/markbates/pkger v0.4.0/go.mod h1:so/QD8FeTM0IilC3nRArkwOvUT+tsJsaXLFUAKmjzJk=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
+github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.4 h1:/eiJrUcujPVeJ3xlSWaiNi3uSVmDGBK1pDHUHAnao1I=
+gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

parser/http.go

@@ -0,0 +1,87 @@
+package parser
+
+import (
+	"encoding/json"
+	"go/token"
+	"os"
+	"path/filepath"
+
+	"github.com/markbates/pkger"
+	"github.com/markbates/pkger/here"
+)
+
+var _ Decl = HTTPDecl{}
+
+type HTTPDecl struct {
+	file  *File
+	pos   token.Pos
+	value string
+}
+
+func (d HTTPDecl) MarshalJSON() ([]byte, error) {
+	return json.Marshal(map[string]interface{}{
+		"type":  "pkger.HTTP",
+		"file":  d.file,
+		"pos":   d.pos,
+		"value": d.value,
+	})
+}
+
+func (d HTTPDecl) File() (*File, error) {
+	if d.file == nil {
+		return nil, os.ErrNotExist
+	}
+	return d.file, nil
+}
+
+func (d HTTPDecl) Pos() (token.Pos, error) {
+	if d.pos <= 0 {
+		return -1, os.ErrNotExist
+	}
+	return d.pos, nil
+}
+
+func (d HTTPDecl) Value() (string, error) {
+	if d.value == "" {
+		return "", os.ErrNotExist
+	}
+	return d.value, nil
+}
+
+func (d HTTPDecl) Files() ([]*File, error) {
+
+	pt, err := pkger.Parse(d.value)
+	if err != nil {
+		return nil, err
+	}
+
+	her, err := here.Package(pt.Pkg)
+	if err != nil {
+		return nil, err
+	}
+
+	fp := filepath.Join(her.Dir, pt.Name)
+
+	osf, err := os.Stat(fp)
+	if err != nil {
+		return nil, err
+	}
+
+	if osf.IsDir() {
+		wd := WalkDecl{
+			file:  d.file,
+			pos:   d.pos,
+			value: d.value,
+		}
+		return wd.Files()
+	}
+
+	var files []*File
+	files = append(files, &File{
+		Abs:  filepath.Join(her.Dir, pt.Name),
+		Path: pt,
+		Here: her,
+	})
+
+	return files, nil
+}

parser/visitor.go

@@ -32,6 +32,10 @@ func (f *file) find() (Decls, error) {
 		return nil, err
 	}
 
+	if err := f.findHTTPCalls(); err != nil {
+		return nil, err
+	}
+
 	if err := f.findWalkCalls(); err != nil {
 		return nil, err
 	}
@@ -136,6 +140,48 @@ func (f *file) findWalkCalls() error {
 	return err
 }
 
+func (f *file) findHTTPCalls() error {
+	var err error
+	f.walk(func(node ast.Node) bool {
+		ce, ok := node.(*ast.CallExpr)
+		if !ok {
+			return true
+		}
+
+		exists := isPkgDot(ce.Fun, "pkger", "HTTP")
+		if !(exists) || len(ce.Args) != 1 {
+			return true
+		}
+
+		n := ce.Args[0]
+
+		s, err := f.asValue(n)
+		if err != nil {
+			return false
+		}
+
+		info, err := here.Dir(filepath.Dir(f.filename))
+		if err != nil {
+			return false
+		}
+
+		pf := &File{
+			Abs:  f.filename,
+			Here: info,
+		}
+
+		decl := HTTPDecl{
+			file:  pf,
+			pos:   n.Pos(),
+			value: s,
+		}
+
+		f.decls = append(f.decls, decl)
+		return true
+	})
+	return err
+}
+
 // helpers
 // =======
 func isPkgDot(expr ast.Expr, pkg, name string) bool {

pkger.go

@@ -2,6 +2,7 @@ package pkger
 
 import (
 	"log"
+	"net/http"
 	"os"
 	"path/filepath"
 	"sync"
@@ -94,3 +95,12 @@ func Remove(name string) error {
 func RemoveAll(name string) error {
 	return impl().RemoveAll(name)
 }
+
+// HTTP returns an http.FileServer for the specified path.
+func HTTP(p string) (http.Handler, error) {
+	f, err := Open(p)
+	if err != nil {
+		return nil, err
+	}
+	return http.FileServer(f), nil
+}