mirror of
https://github.com/Luzifer/nginx-sso.git
synced 2024-12-22 13:51:18 +00:00
152 lines
7.4 KiB
Go
152 lines
7.4 KiB
Go
// Package code39 can create Code39 barcodes
|
|
package code39
|
|
|
|
import (
|
|
"errors"
|
|
"strconv"
|
|
"strings"
|
|
|
|
"github.com/boombuler/barcode"
|
|
"github.com/boombuler/barcode/utils"
|
|
)
|
|
|
|
type encodeInfo struct {
|
|
value int
|
|
data []bool
|
|
}
|
|
|
|
var encodeTable = map[rune]encodeInfo{
|
|
'0': encodeInfo{0, []bool{true, false, true, false, false, true, true, false, true, true, false, true}},
|
|
'1': encodeInfo{1, []bool{true, true, false, true, false, false, true, false, true, false, true, true}},
|
|
'2': encodeInfo{2, []bool{true, false, true, true, false, false, true, false, true, false, true, true}},
|
|
'3': encodeInfo{3, []bool{true, true, false, true, true, false, false, true, false, true, false, true}},
|
|
'4': encodeInfo{4, []bool{true, false, true, false, false, true, true, false, true, false, true, true}},
|
|
'5': encodeInfo{5, []bool{true, true, false, true, false, false, true, true, false, true, false, true}},
|
|
'6': encodeInfo{6, []bool{true, false, true, true, false, false, true, true, false, true, false, true}},
|
|
'7': encodeInfo{7, []bool{true, false, true, false, false, true, false, true, true, false, true, true}},
|
|
'8': encodeInfo{8, []bool{true, true, false, true, false, false, true, false, true, true, false, true}},
|
|
'9': encodeInfo{9, []bool{true, false, true, true, false, false, true, false, true, true, false, true}},
|
|
'A': encodeInfo{10, []bool{true, true, false, true, false, true, false, false, true, false, true, true}},
|
|
'B': encodeInfo{11, []bool{true, false, true, true, false, true, false, false, true, false, true, true}},
|
|
'C': encodeInfo{12, []bool{true, true, false, true, true, false, true, false, false, true, false, true}},
|
|
'D': encodeInfo{13, []bool{true, false, true, false, true, true, false, false, true, false, true, true}},
|
|
'E': encodeInfo{14, []bool{true, true, false, true, false, true, true, false, false, true, false, true}},
|
|
'F': encodeInfo{15, []bool{true, false, true, true, false, true, true, false, false, true, false, true}},
|
|
'G': encodeInfo{16, []bool{true, false, true, false, true, false, false, true, true, false, true, true}},
|
|
'H': encodeInfo{17, []bool{true, true, false, true, false, true, false, false, true, true, false, true}},
|
|
'I': encodeInfo{18, []bool{true, false, true, true, false, true, false, false, true, true, false, true}},
|
|
'J': encodeInfo{19, []bool{true, false, true, false, true, true, false, false, true, true, false, true}},
|
|
'K': encodeInfo{20, []bool{true, true, false, true, false, true, false, true, false, false, true, true}},
|
|
'L': encodeInfo{21, []bool{true, false, true, true, false, true, false, true, false, false, true, true}},
|
|
'M': encodeInfo{22, []bool{true, true, false, true, true, false, true, false, true, false, false, true}},
|
|
'N': encodeInfo{23, []bool{true, false, true, false, true, true, false, true, false, false, true, true}},
|
|
'O': encodeInfo{24, []bool{true, true, false, true, false, true, true, false, true, false, false, true}},
|
|
'P': encodeInfo{25, []bool{true, false, true, true, false, true, true, false, true, false, false, true}},
|
|
'Q': encodeInfo{26, []bool{true, false, true, false, true, false, true, true, false, false, true, true}},
|
|
'R': encodeInfo{27, []bool{true, true, false, true, false, true, false, true, true, false, false, true}},
|
|
'S': encodeInfo{28, []bool{true, false, true, true, false, true, false, true, true, false, false, true}},
|
|
'T': encodeInfo{29, []bool{true, false, true, false, true, true, false, true, true, false, false, true}},
|
|
'U': encodeInfo{30, []bool{true, true, false, false, true, false, true, false, true, false, true, true}},
|
|
'V': encodeInfo{31, []bool{true, false, false, true, true, false, true, false, true, false, true, true}},
|
|
'W': encodeInfo{32, []bool{true, true, false, false, true, true, false, true, false, true, false, true}},
|
|
'X': encodeInfo{33, []bool{true, false, false, true, false, true, true, false, true, false, true, true}},
|
|
'Y': encodeInfo{34, []bool{true, true, false, false, true, false, true, true, false, true, false, true}},
|
|
'Z': encodeInfo{35, []bool{true, false, false, true, true, false, true, true, false, true, false, true}},
|
|
'-': encodeInfo{36, []bool{true, false, false, true, false, true, false, true, true, false, true, true}},
|
|
'.': encodeInfo{37, []bool{true, true, false, false, true, false, true, false, true, true, false, true}},
|
|
' ': encodeInfo{38, []bool{true, false, false, true, true, false, true, false, true, true, false, true}},
|
|
'$': encodeInfo{39, []bool{true, false, false, true, false, false, true, false, false, true, false, true}},
|
|
'/': encodeInfo{40, []bool{true, false, false, true, false, false, true, false, true, false, false, true}},
|
|
'+': encodeInfo{41, []bool{true, false, false, true, false, true, false, false, true, false, false, true}},
|
|
'%': encodeInfo{42, []bool{true, false, true, false, false, true, false, false, true, false, false, true}},
|
|
'*': encodeInfo{-1, []bool{true, false, false, true, false, true, true, false, true, true, false, true}},
|
|
}
|
|
|
|
var extendedTable = map[rune]string{
|
|
0: `%U`, 1: `$A`, 2: `$B`, 3: `$C`, 4: `$D`, 5: `$E`, 6: `$F`, 7: `$G`, 8: `$H`, 9: `$I`, 10: `$J`,
|
|
11: `$K`, 12: `$L`, 13: `$M`, 14: `$N`, 15: `$O`, 16: `$P`, 17: `$Q`, 18: `$R`, 19: `$S`, 20: `$T`,
|
|
21: `$U`, 22: `$V`, 23: `$W`, 24: `$X`, 25: `$Y`, 26: `$Z`, 27: `%A`, 28: `%B`, 29: `%C`, 30: `%D`,
|
|
31: `%E`, 33: `/A`, 34: `/B`, 35: `/C`, 36: `/D`, 37: `/E`, 38: `/F`, 39: `/G`, 40: `/H`, 41: `/I`,
|
|
42: `/J`, 43: `/K`, 44: `/L`, 47: `/O`, 58: `/Z`, 59: `%F`, 60: `%G`, 61: `%H`, 62: `%I`, 63: `%J`,
|
|
64: `%V`, 91: `%K`, 92: `%L`, 93: `%M`, 94: `%N`, 95: `%O`, 96: `%W`, 97: `+A`, 98: `+B`, 99: `+C`,
|
|
100: `+D`, 101: `+E`, 102: `+F`, 103: `+G`, 104: `+H`, 105: `+I`, 106: `+J`, 107: `+K`, 108: `+L`,
|
|
109: `+M`, 110: `+N`, 111: `+O`, 112: `+P`, 113: `+Q`, 114: `+R`, 115: `+S`, 116: `+T`, 117: `+U`,
|
|
118: `+V`, 119: `+W`, 120: `+X`, 121: `+Y`, 122: `+Z`, 123: `%P`, 124: `%Q`, 125: `%R`, 126: `%S`,
|
|
127: `%T`,
|
|
}
|
|
|
|
func getChecksum(content string) string {
|
|
sum := 0
|
|
for _, r := range content {
|
|
info, ok := encodeTable[r]
|
|
if !ok || info.value < 0 {
|
|
return "#"
|
|
}
|
|
|
|
sum += info.value
|
|
}
|
|
|
|
sum = sum % 43
|
|
for r, v := range encodeTable {
|
|
if v.value == sum {
|
|
return string(r)
|
|
}
|
|
}
|
|
return "#"
|
|
}
|
|
|
|
func prepare(content string) (string, error) {
|
|
result := ""
|
|
for _, r := range content {
|
|
if r > 127 {
|
|
return "", errors.New("Only ASCII strings can be encoded")
|
|
}
|
|
val, ok := extendedTable[r]
|
|
if ok {
|
|
result += val
|
|
} else {
|
|
result += string([]rune{r})
|
|
}
|
|
}
|
|
return 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.BarcodeIntCS, 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...)
|
|
}
|
|
|
|
checkSum, err := strconv.ParseInt(getChecksum(content), 10, 64)
|
|
if err != nil {
|
|
checkSum = 0
|
|
}
|
|
return utils.New1DCodeIntCheckSum(barcode.TypeCode39, content, result, int(checkSum)), nil
|
|
}
|