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package union_test
import (
"fmt"
"log"
"net/http"
"os"
"github.com/shurcooL/httpfs/union"
"github.com/shurcooL/httpfs/vfsutil"
"golang.org/x/tools/godoc/vfs/httpfs"
"golang.org/x/tools/godoc/vfs/mapfs"
)
func walk(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
}
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
}
func Example_empty() {
empty := union.New(nil)
err := vfsutil.Walk(empty, "/", walk)
if err != nil {
panic(err)
}
// Output:
// /
}
func Example_notExist() {
empty := union.New(nil)
_, err := empty.Open("/does-not-exist")
fmt.Println("os.IsNotExist:", os.IsNotExist(err))
fmt.Println(err)
// Output:
// os.IsNotExist: true
// open /does-not-exist: file does not exist
}
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