Exemplo n.º 1
0
func getCodeIndexList(content []rune) *utils.BitList {
	result := new(utils.BitList)
	curEncoding := byte(0)
	for i := 0; i < len(content); i++ {

		if shouldUseCTable(content[i:], curEncoding) {
			if curEncoding != startCSymbol {
				result.AddByte(startCSymbol)
				curEncoding = startCSymbol
			}
			idx := (content[i] - '0') * 10
			i++
			idx = idx + (content[i] - '0')

			result.AddByte(byte(idx))
		} else {
			if curEncoding != startBSymbol {
				result.AddByte(startBSymbol)
				curEncoding = startBSymbol
			}
			idx := strings.IndexRune(bTable, content[i])
			if idx < 0 {
				return nil
			}
			result.AddByte(byte(idx))
		}
	}
	fmt.Println(result.GetBytes())
	return result
}
Exemplo n.º 2
0
func addPaddingAndTerminator(bl *utils.BitList, vi *versionInfo) {
	for i := 0; i < 4 && bl.Len() < vi.totalDataBytes()*8; i++ {
		bl.AddBit(false)
	}

	for bl.Len()%8 != 0 {
		bl.AddBit(false)
	}

	for i := 0; bl.Len() < vi.totalDataBytes()*8; i++ {
		if i%2 == 0 {
			bl.AddByte(236)
		} else {
			bl.AddByte(17)
		}
	}
}
Exemplo n.º 3
0
func encodeUnicode(content string, ecl ErrorCorrectionLevel) (*utils.BitList, *versionInfo, error) {
	data := []byte(content)

	vi := findSmallestVersionInfo(ecl, byteMode, len(data)*8)
	if vi == nil {
		return nil, nil, errors.New("To much data to encode")
	}

	// It's not correct to add the unicode bytes to the result directly but most readers can't handle the
	// required ECI header...
	res := new(utils.BitList)
	res.AddBits(int(byteMode), 4)
	res.AddBits(len(content), vi.charCountBits(byteMode))
	for _, b := range data {
		res.AddByte(b)
	}
	addPaddingAndTerminator(res, vi)
	return res, vi, nil
}
Exemplo n.º 4
0
func getCodeIndexList(content []rune) *utils.BitList {
	result := new(utils.BitList)
	curEncoding := byte(0)
	for i := 0; i < len(content); i++ {

		if shouldUseCTable(content[i:], curEncoding) {
			if curEncoding != startCSymbol {
				if curEncoding == byte(0) {
					result.AddByte(startCSymbol)
				} else {
					result.AddByte(codeCSymbol)
				}
				curEncoding = startCSymbol
			}
			idx := (content[i] - '0') * 10
			i++
			idx = idx + (content[i] - '0')

			result.AddByte(byte(idx))
		} else {
			if curEncoding != startBSymbol {
				if curEncoding == byte(0) {
					result.AddByte(startBSymbol)
				} else {
					result.AddByte(codeBSymbol)
				}
				curEncoding = startBSymbol
			}
			var idx int
			switch content[i] {
			case FNC1:
				idx = 102
				break
			case FNC2:
				idx = 97
				break
			case FNC3:
				idx = 96
				break
			case FNC4:
				idx = 100
				break
			default:
				idx = strings.IndexRune(bTable, content[i])
				break
			}

			if idx < 0 {
				return nil
			}
			result.AddByte(byte(idx))
		}
	}
	return result
}