add file link support

bof.go

@@ -1,12 +1,30 @@
 package xls
 
-import ()
+import (
+	"bytes"
+	"encoding/binary"
+	"io"
+	"unicode/utf16"
+)
 
 type BOF struct {
 	Id   uint16
 	Size uint16
 }
 
+func (b *BOF) Reader(buf io.ReadSeeker) io.ReadSeeker {
+	rts := make([]byte, b.Size)
+	buf.Read(rts)
+	return bytes.NewReader(rts)
+}
+
+func (b *BOF) Utf16String(buf io.ReadSeeker, count uint32) string {
+	var bts = make([]uint16, count)
+	binary.Read(buf, binary.LittleEndian, &bts)
+	runes := utf16.Decode(bts[:len(bts)-1])
+	return string(runes)
+}
+
 type BIFFHeader struct {
 	Ver     uint16
 	Type    uint16

cell_range.go

@@ -34,26 +34,26 @@ func (c *CellRange) LastCol() uint16 {
 
 type HyperLink struct {
 	CellRange
-	Description string
-	TextMark    string
-	TargetFrame string
-	Url         string
+	Description      string
+	TextMark         string
+	TargetFrame      string
+	Url              string
+	ShortedFilePath  string
+	ExtendedFilePath string
+	IsUrl            bool
 }
 
 func (h *HyperLink) String(wb *WorkBook) []string {
 	res := make([]string, h.LastColB-h.FristColB+1)
-	str := fmt.Sprintf("%s(%s)", h.Description, h.Url)
+	var str string
+	if h.IsUrl {
+		str = fmt.Sprintf("%s(%s)", h.Description, h.Url)
+	} else {
+		str = h.ExtendedFilePath
+	}
+
 	for i := uint16(0); i < h.LastColB-h.FristColB+1; i++ {
 		res[i] = str
 	}
 	return res
 }
-
-// func (h *HyperLinkCR) ParseFrom(buf io.ReadSeeker) {
-// 	if h.Flags&0x1 != 0 {
-// 		binary.Read(buf, binary.LittleEndian, &richtext_num)
-// 	}
-// 	if h.Flags&0x4 != 0 {
-// 		binary.Read(buf, binary.LittleEndian, &phonetic_size)
-// 	}
-// }

worksheet.go

@@ -87,37 +87,41 @@ func (w *WorkSheet) parseBof(buf io.ReadSeeker, bof *BOF, pre *BOF) *BOF {
 	case 0x1b8: //HYPERLINK
 		var hy HyperLink
 		binary.Read(buf, binary.LittleEndian, &hy.CellRange)
-
 		buf.Seek(20, 1)
 		var flag uint32
 		binary.Read(buf, binary.LittleEndian, &flag)
 		var count uint32
 
 		if flag&0x14 != 0 {
 			binary.Read(buf, binary.LittleEndian, &count)
-			var bts = make([]uint16, count)
-			binary.Read(buf, binary.LittleEndian, &bts)
-			runes := utf16.Decode(bts[:len(bts)-1])
-			hy.Description = string(runes)
+			hy.Description = bof.Utf16String(buf, count)
 		}
 		if flag&0x80 != 0 {
 			binary.Read(buf, binary.LittleEndian, &count)
-			var bts = make([]uint16, count)
-			binary.Read(buf, binary.LittleEndian, &bts)
-			runes := utf16.Decode(bts[:len(bts)-1])
-			hy.TargetFrame = string(runes)
+			hy.TargetFrame = bof.Utf16String(buf, count)
 		}
 		if flag&0x1 != 0 {
 			var guid [2]uint64
 			binary.Read(buf, binary.BigEndian, &guid)
 			if guid[0] == 0xE0C9EA79F9BACE11 && guid[1] == 0x8C8200AA004BA90B { //URL
+				hy.IsUrl = true
 				binary.Read(buf, binary.LittleEndian, &count)
-				var bts = make([]uint16, count/2)
+				hy.Url = bof.Utf16String(buf, count/2)
+			} else if guid[0] == 0x303000000000000 && guid[1] == 0xC000000000000046 { //URL{
+				var upCount uint16
+				binary.Read(buf, binary.LittleEndian, &upCount)
+				binary.Read(buf, binary.LittleEndian, &count)
+				bts := make([]byte, count)
 				binary.Read(buf, binary.LittleEndian, &bts)
-				runes := utf16.Decode(bts[:len(bts)-1])
-				hy.Url = string(runes)
-			} else {
-				log.Panicln("not support yet")
+				hy.ShortedFilePath = string(bts)
+				buf.Seek(24, 1)
+				binary.Read(buf, binary.LittleEndian, &count)
+				if count > 0 {
+					binary.Read(buf, binary.LittleEndian, &count)
+					buf.Seek(2, 1)
+					hy.ExtendedFilePath = bof.Utf16String(buf, count/2+1)
+				}
+				log.Println(hy)
 			}
 		}
 		if flag&0x8 != 0 {