replace zxq.co/ripple/hanayo

vendor/github.com/boombuler/barcode/code128/encode.go

@@ -0,0 +1,203 @@
+// Package code128 can create Code128 barcodes
+package code128
+
+import (
+	"fmt"
+	"strings"
+	"unicode/utf8"
+
+	"github.com/boombuler/barcode"
+	"github.com/boombuler/barcode/utils"
+)
+
+func strToRunes(str string) []rune {
+	result := make([]rune, utf8.RuneCountInString(str))
+	i := 0
+	for _, r := range str {
+		result[i] = r
+		i++
+	}
+	return result
+}
+
+func shouldUseCTable(nextRunes []rune, curEncoding byte) bool {
+	requiredDigits := 4
+	if curEncoding == startCSymbol {
+		requiredDigits = 2
+	}
+	if len(nextRunes) < requiredDigits {
+		return false
+	}
+	for i := 0; i < requiredDigits; i++ {
+		if i%2 == 0 && nextRunes[i] == FNC1 {
+			requiredDigits++
+			if len(nextRunes) < requiredDigits {
+				return false
+			}
+			continue
+		}
+		if nextRunes[i] < '0' || nextRunes[i] > '9' {
+			return false
+		}
+	}
+	return true
+}
+
+func tableContainsRune(table string, r rune) bool {
+	return strings.ContainsRune(table, r) || r == FNC1 || r == FNC2 || r == FNC3 || r == FNC4
+}
+
+func shouldUseATable(nextRunes []rune, curEncoding byte) bool {
+	nextRune := nextRunes[0]
+	if !tableContainsRune(bTable, nextRune) || curEncoding == startASymbol {
+		return tableContainsRune(aTable, nextRune)
+	}
+	if curEncoding == 0 {
+		for _, r := range nextRunes {
+			if tableContainsRune(abTable, r) {
+				continue
+			}
+			if strings.ContainsRune(aOnlyTable, r) {
+				return true
+			}
+			break
+		}
+	}
+	return false
+}
+
+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
+			}
+			if content[i] == FNC1 {
+				result.AddByte(102)
+			} else {
+				idx := (content[i] - '0') * 10
+				i++
+				idx = idx + (content[i] - '0')
+				result.AddByte(byte(idx))
+			}
+		} else if shouldUseATable(content[i:], curEncoding) {
+			if curEncoding != startASymbol {
+				if curEncoding == byte(0) {
+					result.AddByte(startASymbol)
+				} else {
+					result.AddByte(codeASymbol)
+				}
+				curEncoding = startASymbol
+			}
+			var idx int
+			switch content[i] {
+			case FNC1:
+				idx = 102
+				break
+			case FNC2:
+				idx = 97
+				break
+			case FNC3:
+				idx = 96
+				break
+			case FNC4:
+				idx = 101
+				break
+			default:
+				idx = strings.IndexRune(aTable, content[i])
+				break
+			}
+			if idx < 0 {
+				return nil
+			}
+			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
+}
+
+// Encode creates a Code 128 barcode for the given content
+func Encode(content string) (barcode.BarcodeIntCS, 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]...)
+	}
+	sum = sum % 103
+	result.AddBit(encodingTable[sum]...)
+	result.AddBit(encodingTable[stopSymbol]...)
+	return utils.New1DCodeIntCheckSum(barcode.TypeCode128, content, result, sum), nil
+}
+
+func EncodeWithoutChecksum(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)
+	for _, idx := range idxList.GetBytes() {
+		result.AddBit(encodingTable[idx]...)
+	}
+	result.AddBit(encodingTable[stopSymbol]...)
+	return utils.New1DCode(barcode.TypeCode128, content, result), nil
+}