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Full ASCII Mode for Code93

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This commit is contained in:
boombuler 2017-06-03 14:47:11 +02:00
parent 1afd8687e3
commit 34a2c393da
2 changed files with 40 additions and 3 deletions
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41
code93/encoder.go
View File

@ -44,9 +44,46 @@ var encodeTable = map[rune]encodeInfo{
FNC3: encodeInfo{45, 0x1D6}, FNC4: encodeInfo{46, 0x132}, '*': encodeInfo{47, 0x15E},
}
var extendedTable = []string{
"\u00f2U", "\u00f1A", "\u00f1B", "\u00f1C", "\u00f1D", "\u00f1E", "\u00f1F", "\u00f1G",
"\u00f1H", "\u00f1I", "\u00f1J", "\u00f1K", "\u00f1L", "\u00f1M", "\u00f1N", "\u00f1O",
"\u00f1P", "\u00f1Q", "\u00f1R", "\u00f1S", "\u00f1T", "\u00f1U", "\u00f1V", "\u00f1W",
"\u00f1X", "\u00f1Y", "\u00f1Z", "\u00f2A", "\u00f2B", "\u00f2C", "\u00f2D", "\u00f2E",
" ", "\u00f3A", "\u00f3B", "\u00f3C", "\u00f3D", "\u00f3E", "\u00f3F", "\u00f3G",
"\u00f3H", "\u00f3I", "\u00f3J", "\u00f3K", "\u00f3L", "-", ".", "\u00f3O",
"0", "1", "2", "3", "4", "5", "6", "7",
"8", "9", "\u00f3Z", "\u00f2F", "\u00f2G", "\u00f2H", "\u00f2I", "\u00f2J",
"\u00f2V", "A", "B", "C", "D", "E", "F", "G",
"H", "I", "J", "K", "L", "M", "N", "O",
"P", "Q", "R", "S", "T", "U", "V", "W",
"X", "Y", "Z", "\u00f2K", "\u00f2L", "\u00f2M", "\u00f2N", "\u00f2O",
"\u00f2W", "\u00f4A", "\u00f4B", "\u00f4C", "\u00f4D", "\u00f4E", "\u00f4F", "\u00f4G",
"\u00f4H", "\u00f4I", "\u00f4J", "\u00f4K", "\u00f4L", "\u00f4M", "\u00f4N", "\u00f4O",
"\u00f4P", "\u00f4Q", "\u00f4R", "\u00f4S", "\u00f4T", "\u00f4U", "\u00f4V", "\u00f4W",
"\u00f4X", "\u00f4Y", "\u00f4Z", "\u00f2P", "\u00f2Q", "\u00f2R", "\u00f2S", "\u00f2T",
}
func prepare(content string) (string, error) {
result := ""
for _, r := range content {
if r > 127 {
return "", errors.New("Only ASCII strings can be encoded")
}
result += extendedTable[int(r)]
}
return result, nil
}
// Encode returns a code93 barcode for the given content
func Encode(content string) (barcode.Barcode, error) {
if strings.ContainsRune(content, '*') {
// if includeChecksum is set to true, two checksum characters are 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! content may not contain '*'")
}

2
code93/encoder_test.go
View File

@ -6,7 +6,7 @@ import (
)
func doTest(t *testing.T, data, testResult string) {
code, err := Encode(data)
code, err := Encode(data, true, false)
if err != nil {
t.Error(err)
}