Пример #1
0
func ExampleCompressed() {
	// Compressed file system.
	var fs http.FileSystem = assets

	walkFn := func(path string, fi os.FileInfo, err error) error {
		if err != nil {
			log.Printf("can't stat file %s: %v\n", path, err)
			return nil
		}

		fmt.Println(path)
		if fi.IsDir() {
			return nil
		}

		f, err := fs.Open(path)
		if err != nil {
			fmt.Printf("fs.Open(%q): %v\n", path, err)
			return nil
		}
		defer f.Close()

		b, err := ioutil.ReadAll(f)
		fmt.Printf("%q %v\n", string(b), err)

		if gzipFile, ok := f.(gzipByter); ok {
			b := gzipFile.GzipBytes()
			fmt.Printf("%q\n", string(b))
		} else {
			fmt.Println("<not compressed>")
		}
		return nil
	}

	err := vfsutil.Walk(fs, "/", walkFn)
	if err != nil {
		panic(err)
	}

	// Output:
	// /
	// /folderA
	// /folderA/file1.txt
	// "Stuff in /folderA/file1.txt." <nil>
	// <not compressed>
	// /folderA/file2.txt
	// "Stuff in /folderA/file2.txt." <nil>
	// <not compressed>
	// /folderB
	// /folderB/folderC
	// /folderB/folderC/file3.txt
	// "Stuff in /folderB/folderC/file3.txt." <nil>
	// <not compressed>
	// /not-worth-compressing-file.txt
	// "Its normal contents are here." <nil>
	// <not compressed>
	// /sample-file.txt
	// "This file compresses well. Blaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaah!" <nil>
	// "\x1f\x8b\b\x00\x00\tn\x88\x00\xff\n\xc9\xc8,VH\xcb\xccIUH\xce\xcf-(J-.N-V(O\xcd\xc9\xd1Sp\xcaI\x1c\xd4 C\x11\x10\x00\x00\xff\xff\xe7G\x81:\xbd\x00\x00\x00"
}
Пример #2
0
func ExampleWalk() {
	var fs http.FileSystem = httpfs.New(mapfs.New(map[string]string{
		"zzz-last-file.txt":   "It should be visited last.",
		"a-file.txt":          "It has stuff.",
		"another-file.txt":    "Also stuff.",
		"folderA/entry-A.txt": "Alpha.",
		"folderA/entry-B.txt": "Beta.",
	}))

	walkFn := func(path string, fi os.FileInfo, err error) error {
		if err != nil {
			log.Printf("can't stat file %s: %v\n", path, err)
			return nil
		}
		fmt.Println(path)
		return nil
	}

	err := vfsutil.Walk(fs, "/", walkFn)
	if err != nil {
		panic(err)
	}

	// Output:
	// /
	// /a-file.txt
	// /another-file.txt
	// /folderA
	// /folderA/entry-A.txt
	// /folderA/entry-B.txt
	// /zzz-last-file.txt
}
Пример #3
0
func Example_empty() {
	empty := union.New(nil)

	err := vfsutil.Walk(empty, "/", walk)
	if err != nil {
		panic(err)
	}

	// Output:
	// /
}
Пример #4
0
func Example() {
	fs0 := httpfs.New(mapfs.New(map[string]string{
		"zzz-last-file.txt":   "It should be visited last.",
		"a-file.txt":          "It has stuff.",
		"another-file.txt":    "Also stuff.",
		"folderA/entry-A.txt": "Alpha.",
		"folderA/entry-B.txt": "Beta.",
	}))
	fs1 := httpfs.New(mapfs.New(map[string]string{
		"sample-file.txt":                "This file compresses well. Blaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaah!",
		"not-worth-compressing-file.txt": "Its normal contents are here.",
		"folderA/file1.txt":              "Stuff 1.",
		"folderA/file2.txt":              "Stuff 2.",
		"folderB/folderC/file3.txt":      "Stuff C-3.",
	}))

	fs := union.New(map[string]http.FileSystem{
		"/fs0": fs0,
		"/fs1": fs1,
	})

	err := vfsutil.Walk(fs, "/", walk)
	if err != nil {
		panic(err)
	}

	// Output:
	// /
	// /fs0
	// /fs0/a-file.txt
	// /fs0/another-file.txt
	// /fs0/folderA
	// /fs0/folderA/entry-A.txt
	// /fs0/folderA/entry-B.txt
	// /fs0/zzz-last-file.txt
	// /fs1
	// /fs1/folderA
	// /fs1/folderA/file1.txt
	// /fs1/folderA/file2.txt
	// /fs1/folderB
	// /fs1/folderB/folderC
	// /fs1/folderB/folderC/file3.txt
	// /fs1/not-worth-compressing-file.txt
	// /fs1/sample-file.txt
}
Пример #5
0
// Basic functionality test.
func ExampleBasic() {
	var fs http.FileSystem = assets

	walkFn := func(path string, fi os.FileInfo, err error) error {
		if err != nil {
			log.Printf("can't stat file %s: %v\n", path, err)
			return nil
		}

		fmt.Println(path)
		if fi.IsDir() {
			return nil
		}

		b, err := vfsutil.ReadFile(fs, path)
		fmt.Printf("%q %v\n", string(b), err)
		return nil
	}

	err := vfsutil.Walk(fs, "/", walkFn)
	if err != nil {
		panic(err)
	}

	// Output:
	// /
	// /folderA
	// /folderA/file1.txt
	// "Stuff in /folderA/file1.txt." <nil>
	// /folderA/file2.txt
	// "Stuff in /folderA/file2.txt." <nil>
	// /folderB
	// /folderB/folderC
	// /folderB/folderC/file3.txt
	// "Stuff in /folderB/folderC/file3.txt." <nil>
	// /not-worth-compressing-file.txt
	// "Its normal contents are here." <nil>
	// /sample-file.txt
	// "This file compresses well. Blaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaah!" <nil>
}
Пример #6
0
func Example() {
	walk := func(path string, fi os.FileInfo, err error) error {
		if err != nil {
			log.Printf("can't stat file %s: %v\n", path, err)
			return nil
		}
		fmt.Println(path)
		return nil
	}

	fs := httpfs.New(mapfs.New(map[string]string{
		"zzz-last-file.txt":                "It should be visited last.",
		"a-file.txt":                       "It has stuff.",
		"another-file.txt":                 "Also stuff.",
		"some-file.html":                   "<html>and stuff</html>",
		"folderA/entry-A.txt":              "Alpha.",
		"folderA/entry-B.txt":              "Beta.",
		"folderA/main.go":                  "package main\n",
		"folderA/folder-to-skip/many.txt":  "Entire folder can be skipped.",
		"folderA/folder-to-skip/files.txt": "Entire folder can be skipped.",
		"folder-to-skip":                   "This is a file, not a folder, and shouldn't be skipped.",
	}))

	ignore := func(fi os.FileInfo, _ string) bool {
		return pathpkg.Ext(fi.Name()) == ".go" || pathpkg.Ext(fi.Name()) == ".html" ||
			(fi.IsDir() && fi.Name() == "folder-to-skip")
	}

	fs = filter.NewIgnore(fs, ignore)

	err := vfsutil.Walk(fs, "/", walk)
	if err != nil {
		panic(err)
	}

	fmt.Println()

	// This file should be filtered out, even if accessed directly.
	_, err = fs.Open("/folderA/main.go")
	fmt.Println("os.IsNotExist(err):", os.IsNotExist(err))
	fmt.Println(err)

	fmt.Println()

	// This folder should be filtered out, even if accessed directly.
	_, err = fs.Open("/folderA/folder-to-skip")
	fmt.Println("os.IsNotExist(err):", os.IsNotExist(err))
	fmt.Println(err)

	fmt.Println()

	// This file should not be filtered out.
	f, err := fs.Open("/folder-to-skip")
	if err != nil {
		panic(err)
	}
	io.Copy(os.Stdout, f)
	f.Close()

	// Output:
	// /
	// /a-file.txt
	// /another-file.txt
	// /folder-to-skip
	// /folderA
	// /folderA/entry-A.txt
	// /folderA/entry-B.txt
	// /zzz-last-file.txt
	//
	// os.IsNotExist(err): true
	// open /folderA/main.go: file does not exist
	//
	// os.IsNotExist(err): true
	// open /folderA/folder-to-skip: file does not exist
	//
	// This is a file, not a folder, and shouldn't be skipped.
}