Move code to hotline dir

1 files changed, 56 insertions, 0 deletions

diff --git a/hotline/file_path.go b/hotline/file_path.go
new file mode 100644
index 0000000..71168dc
--- /dev/null
+++ b/hotline/file_path.go
@@ -0,0 +1,56 @@
+package hotline
+
+import (
+	"encoding/binary"
+	"strings"
+)
+
+const pathSeparator = "/" // File path separator TODO: make configurable to support Windows
+
+// FilePathItem represents the file or directory portion of a delimited file path (e.g. foo and bar in "/foo/bar")
+// 00 00
+// 09
+// 73 75 62 66 6f 6c 64 65 72 // "subfolder"
+type FilePathItem struct {
+	Len  byte
+	Name []byte
+}
+
+func NewFilePathItem(b []byte) FilePathItem {
+	return FilePathItem{
+		Len:  b[2],
+		Name: b[3:],
+	}
+}
+
+type FilePath struct {
+	PathItemCount []byte
+	PathItems     []FilePathItem
+}
+
+func NewFilePath(b []byte) FilePath {
+	if b == nil {
+		return FilePath{}
+	}
+
+	fp := FilePath{PathItemCount: b[0:2]}
+
+	// number of items in the path
+	pathItemLen := binary.BigEndian.Uint16(b[0:2])
+	pathData := b[2:]
+	for i := uint16(0); i < pathItemLen; i++ {
+		segLen := pathData[2]
+		fp.PathItems = append(fp.PathItems, NewFilePathItem(pathData[:segLen+3]))
+		pathData = pathData[3+segLen:]
+	}
+
+	return fp
+}
+
+func (fp *FilePath) String() string {
+	var out []string
+	for _, i := range fp.PathItems {
+		out = append(out, string(i.Name))
+	}
+	return strings.Join(out, pathSeparator)
+}