// Encode returns a EAN 8 or EAN 13 barcode for the given code
func Encode(code string) (barcode.Barcode, error) {
var checkSum int
if len(code) == 7 || len(code) == 12 {
code += string(calcCheckNum(code))
checkSum = utils.RuneToInt(calcCheckNum(code))
} else if len(code) == 8 || len(code) == 13 {
check := code[0 : len(code)-1]
check += string(calcCheckNum(check))
if check != code {
return nil, errors.New("checksum missmatch")
}
checkSum = utils.RuneToInt(rune(code[len(code)-1]))
}
if len(code) == 8 {
result := encodeEAN8(code)
if result != nil {
return utils.New1DCode("EAN 8", code, result, checkSum), nil
}
} else if len(code) == 13 {
result := encodeEAN13(code)
if result != nil {
return utils.New1DCode("EAN 13", code, result, checkSum), nil
}
}
return nil, errors.New("invalid ean code data")
}
func Encode(content string) (barcode.Barcode, error) {
contentRunes := strToRunes(content)
if len(contentRunes) < 0 || len(contentRunes) > 80 {
return nil, fmt.Errorf("content length should be between 1 and 80 runes but got %d", len(contentRunes))
}
idxList := getCodeIndexList(contentRunes)
if idxList == nil {
return nil, fmt.Errorf("\"%s\" could not be encoded", content)
}
result := new(utils.BitList)
sum := 0
for i, idx := range idxList.GetBytes() {
if i == 0 {
sum = int(idx)
} else {
sum += i * int(idx)
}
result.AddBit(encodingTable[idx]...)
}
result.AddBit(encodingTable[sum%103]...)
result.AddBit(encodingTable[stopSymbol]...)
return utils.New1DCode("Code 128", content, result), nil
}
// Encode returns a code39 barcode for the given content
// if includeChecksum is set to true, a checksum character is calculated and added to the content
func Encode(content string, includeChecksum bool, fullASCIIMode bool) (barcode.Barcode, error) {
if fullASCIIMode {
var err error
content, err = prepare(content)
if err != nil {
return nil, err
}
} else if strings.ContainsRune(content, '*') {
return nil, errors.New("invalid data! try full ascii mode")
}
data := "*" + content
if includeChecksum {
data += getChecksum(content)
}
data += "*"
result := new(utils.BitList)
for i, r := range data {
if i != 0 {
result.AddBit(false)
}
info, ok := encodeTable[r]
if !ok {
return nil, errors.New("invalid data! try full ascii mode")
}
result.AddBit(info.data...)
}
return utils.New1DCode("Code 39", content, result), nil
}
// Encode creates a codabar barcode for the given content
func Encode(content string, interleaved bool) (barcode.Barcode, error) {
if content == "" {
return nil, errors.New("content is empty")
}
if interleaved && len(content)%2 == 1 {
return nil, errors.New("can only encode even number of digits in interleaved mode")
}
mode := modes[interleaved]
resBits := new(utils.BitList)
resBits.AddBit(mode.start...)
var lastRune *rune
for _, r := range content {
var a, b pattern
if interleaved {
if lastRune == nil {
lastRune = new(rune)
*lastRune = r
continue
} else {
var o1, o2 bool
a, o1 = encodingTable[*lastRune]
b, o2 = encodingTable[r]
if !o1 || !o2 {
return nil, fmt.Errorf("can not encode \"%s\"", content)
}
lastRune = nil
}
} else {
var ok bool
a, ok = encodingTable[r]
if !ok {
return nil, fmt.Errorf("can not encode \"%s\"", content)
}
b = nonInterleavedSpace
}
for i := 0; i < patternWidth; i++ {
for x := 0; x < mode.widths[a[i]]; x++ {
resBits.AddBit(true)
}
for x := 0; x < mode.widths[b[i]]; x++ {
resBits.AddBit(false)
}
}
}
resBits.AddBit(mode.end...)
kindTxt := ""
if interleaved {
kindTxt = " (interleaved)"
}
return utils.New1DCode("2 of 5"+kindTxt, content, resBits, -1), nil
}
// Encode creates a codabar barcode for the given content
func Encode(content string) (barcode.Barcode, error) {
checkValid, _ := regexp.Compile(`[ABCD][0123456789\-\$\:/\.\+]*[ABCD]$`)
if content == "!" || checkValid.ReplaceAllString(content, "!") != "!" {
return nil, fmt.Errorf("can not encode \"%s\"", content)
}
resBits := new(utils.BitList)
for i, r := range content {
if i > 0 {
resBits.AddBit(false)
}
resBits.AddBit(encodingTable[r]...)
}
return utils.New1DCode("Codabar", content, resBits), nil
}