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Add an option to allow empty root in the fsHandler #1299

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merged 4 commits into from May 16, 2022
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26 changes: 15 additions & 11 deletions fs.go
Expand Up @@ -128,6 +128,7 @@ var (
rootFSOnce sync.Once
rootFS = &FS{
Root: "",
AllowEmptyRoot: true,
GenerateIndexPages: true,
Compress: true,
CompressBrotli: true,
Expand Down Expand Up @@ -229,6 +230,12 @@ type FS struct {
// Path to the root directory to serve files from.
Root string

// Empty root specifications are always filled with the absolute path which exists in the current execution location of the application
// with this setting you can prevent this, for example if you want to handle absolute and relative paths with the requestUri
//
// By default the setting is false
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AllowEmptyRoot bool

// List of index file names to try opening during directory access.
//
// For example:
Expand Down Expand Up @@ -384,19 +391,16 @@ func (fs *FS) NewRequestHandler() RequestHandler {
func (fs *FS) initRequestHandler() {
root := fs.Root

// rootFS' handleRequest will do special treatment of absolute and relative paths
if fs != rootFS {
// serve files from the current working directory if root is empty
if len(root) == 0 || !filepath.IsAbs(root) {
path, err := os.Getwd()
if err != nil {
path = "."
}
root = path + "/" + root
// serve files from the current working directory if root is empty
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if (!fs.AllowEmptyRoot && len(root) == 0) || (len(root) > 0 && !filepath.IsAbs(root)) {
path, err := os.Getwd()
if err != nil {
path = "."
}
// convert the root directory slashes to the native format
root = filepath.FromSlash(root)
root = path + "/" + root
}
// convert the root directory slashes to the native format
root = filepath.FromSlash(root)

// strip trailing slashes from the root path
for len(root) > 0 && root[len(root)-1] == os.PathSeparator {
Expand Down
1 change: 0 additions & 1 deletion go.sum
Expand Up @@ -19,7 +19,6 @@ golang.org/x/sys v0.0.0-20220227234510-4e6760a101f9 h1:nhht2DYV/Sn3qOayu8lM+cU1i
golang.org/x/sys v0.0.0-20220227234510-4e6760a101f9/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
golang.org/x/text v0.3.6 h1:aRYxNxv6iGQlyVaZmk6ZgYEDa+Jg18DxebPSrd6bg1M=
golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
golang.org/x/text v0.3.7 h1:olpwvP2KacW1ZWvsR7uQhoyTYvKAupfQrRGBFM352Gk=
golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
Expand Down