格式化及添加注释

Author: chen.s.g

workbook.go

@@ -78,8 +78,8 @@ func (wb *WorkBook) parseBof(buf io.ReadSeeker, b *bof, pre *bof, offset_pre int
 		wb.Type = bif.Type
 	case 0x0042: // CODEPAGE
 		binary.Read(item, binary.LittleEndian, &wb.Codepage)
-	case 0x3C: // CONTINUE
-		if pre.Id == 0xfc {
+	case 0x003c: // SST CONTINUE identifier
+		if pre.Id == 0x00fc {
 			var size uint16
 			var err error
 			if wb.continue_utf16 >= 1 {
@@ -106,7 +106,7 @@ func (wb *WorkBook) parseBof(buf io.ReadSeeker, b *bof, pre *bof, offset_pre int
 		offset = offset_pre
 		after = pre
 		after_using = b
-	case 0x00FC: // SST
+	case 0x00fc: // SST identifier
 		info := new(SstInfo)
 		binary.Read(item, binary.LittleEndian, info)
 		wb.sst = make([]string, info.Count)
@@ -150,7 +150,7 @@ func (wb *WorkBook) parseBof(buf io.ReadSeeker, b *bof, pre *bof, offset_pre int
 		f := new(FontInfo)
 		binary.Read(item, binary.LittleEndian, f)
 		wb.addFont(f, item)
-	case 0x041E: //FORMAT
+	case 0x041e: //FORMAT
 		format := new(Format)
 		binary.Read(item, binary.LittleEndian, &format.Head)
 		if raw, err := wb.parseString(item, format.Head.Size); nil == err && "" != raw {
@@ -214,18 +214,24 @@ func (w *WorkBook) parseString(buf io.ReadSeeker, size uint16) (res string, err
 		var phonetic_size = uint32(0)
 		var flag byte
 		err = binary.Read(buf, binary.LittleEndian, &flag)
+
+		// Rich-Text settings (richtext)
 		if flag&0x8 != 0 {
 			err = binary.Read(buf, binary.LittleEndian, &richtext_num)
 		} else if w.continue_rich > 0 {
 			richtext_num = w.continue_rich
 			w.continue_rich = 0
 		}
+
+		// Asian phonetic settings
 		if flag&0x4 != 0 {
 			err = binary.Read(buf, binary.LittleEndian, &phonetic_size)
 		} else if w.continue_apsb > 0 {
 			phonetic_size = w.continue_apsb
 			w.continue_apsb = 0
 		}
+
+		// Character compression
 		if flag&0x1 != 0 {
 			var bts = make([]uint16, size)
 			var i = uint16(0)
@@ -253,6 +259,7 @@ func (w *WorkBook) parseString(buf io.ReadSeeker, size uint16) (res string, err
 			runes := utf16.Decode(bts1)
 			res = strings.Trim(string(runes), "\r\n\t ")
 		}
+
 		if richtext_num > 0 {
 			var ss int64
 			if w.Is5ver {