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38 lines
723 B
Go
38 lines
723 B
Go
package overlays
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import (
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"io/fs"
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"net/http"
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"path"
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)
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// Compile-time assertion
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var _ http.FileSystem = httpFSStack{}
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type httpFSStack []http.FileSystem
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func (h httpFSStack) Open(name string) (http.File, error) {
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for _, fs := range h {
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if f, err := fs.Open(name); err == nil {
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return f, nil
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}
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}
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return nil, fs.ErrNotExist
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}
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// Compile-time assertion
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var _ http.FileSystem = prefixedFS{}
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type prefixedFS struct {
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originFS http.FileSystem
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prefix string
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}
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func newPrefixedFS(prefix string, originFS http.FileSystem) *prefixedFS {
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return &prefixedFS{originFS: originFS, prefix: prefix}
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}
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func (p prefixedFS) Open(name string) (http.File, error) {
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return p.originFS.Open(path.Join(p.prefix, name))
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}
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