fork from prologic/pages-server

gitea/fs.go

@@ -0,0 +1,93 @@
+package gitea
+
+import (
+	"io"
+	"io/fs"
+	"time"
+)
+
+type fileInfo struct {
+	size  int64
+	isdir bool
+	name  string
+}
+
+type openFile struct {
+	content []byte
+	offset  int64
+	name    string
+	isdir   bool
+}
+
+func (g fileInfo) Name() string {
+	return g.name
+}
+
+func (g fileInfo) Size() int64 {
+	return g.size
+}
+
+func (g fileInfo) Mode() fs.FileMode {
+	return 0o444
+}
+
+func (g fileInfo) ModTime() time.Time {
+	return time.Time{}
+}
+
+func (g fileInfo) Sys() any {
+	return nil
+}
+
+func (g fileInfo) IsDir() bool {
+	return g.isdir
+}
+
+var _ io.Seeker = (*openFile)(nil)
+
+func (o *openFile) Close() error {
+	return nil
+}
+
+func (o *openFile) Stat() (fs.FileInfo, error) {
+	return fileInfo{
+		size:  int64(len(o.content)),
+		isdir: o.isdir,
+		name:  o.name,
+	}, nil
+}
+
+func (o *openFile) Read(b []byte) (int, error) {
+	if o.offset >= int64(len(o.content)) {
+		return 0, io.EOF
+	}
+
+	if o.offset < 0 {
+		return 0, &fs.PathError{Op: "read", Path: o.name, Err: fs.ErrInvalid}
+	}
+
+	n := copy(b, o.content[o.offset:])
+
+	o.offset += int64(n)
+
+	return n, nil
+}
+
+func (o *openFile) Seek(offset int64, whence int) (int64, error) {
+	switch whence {
+	case 0:
+		offset += 0
+	case 1:
+		offset += o.offset
+	case 2:
+		offset += int64(len(o.content))
+	}
+
+	if offset < 0 || offset > int64(len(o.content)) {
+		return 0, &fs.PathError{Op: "seek", Path: o.name, Err: fs.ErrInvalid}
+	}
+
+	o.offset = offset
+
+	return offset, nil
+}