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encoder.go
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encoder.go
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// Package codabar can create Codabar barcodes
package codabar
import (
"fmt"
"regexp"
"github.com/henrylee2cn/faygo/ext/barcode"
"github.com/henrylee2cn/faygo/ext/barcode/utils"
)
var encodingTable = map[rune][]bool{
'0': []bool{true, false, true, false, true, false, false, true, true},
'1': []bool{true, false, true, false, true, true, false, false, true},
'2': []bool{true, false, true, false, false, true, false, true, true},
'3': []bool{true, true, false, false, true, false, true, false, true},
'4': []bool{true, false, true, true, false, true, false, false, true},
'5': []bool{true, true, false, true, false, true, false, false, true},
'6': []bool{true, false, false, true, false, true, false, true, true},
'7': []bool{true, false, false, true, false, true, true, false, true},
'8': []bool{true, false, false, true, true, false, true, false, true},
'9': []bool{true, true, false, true, false, false, true, false, true},
'-': []bool{true, false, true, false, false, true, true, false, true},
'$': []bool{true, false, true, true, false, false, true, false, true},
':': []bool{true, true, false, true, false, true, true, false, true, true},
'/': []bool{true, true, false, true, true, false, true, false, true, true},
'.': []bool{true, true, false, true, true, false, true, true, false, true},
'+': []bool{true, false, true, true, false, false, true, true, false, false, true, true},
'A': []bool{true, false, true, true, false, false, true, false, false, true},
'B': []bool{true, false, true, false, false, true, false, false, true, true},
'C': []bool{true, false, false, true, false, false, true, false, true, true},
'D': []bool{true, false, true, false, false, true, true, false, false, true},
}
// Encode creates a codabar barcode for the given content
func Encode(content string) (barcode.Barcode, error) {
checkValid, _ := regexp.Compile(`[ABCD][0123456789\-\$\:/\.\+]*[ABCD]$`)
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, 0), nil
}