SJISToJIS関数

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シフトJISコードをJISコードに変換します。

構文
SJISToJIS( SJIS )
引数
SJIS 必須
シフトJIS（16進数）
戻り値
JIS（16進数）

プログラム

UWSC
//////////////////////////////////////////////////
// 【引数】
//   SJIS : シフトJIS（16進数） 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION SJISToJIS(SJIS)
	DIM arr[1]
	DIM res[1]
	arr[0] = hexToDec(COPY(SJIS, 1, 2))
	arr[1] = hexToDec(COPY(SJIS, 3, 2))
	IFB arr[0] <= $9F THEN
		arr[0] = arr[0] - $71
	ELSE
		arr[0] = arr[0] - $B1
	ENDIF
	arr[0] = arr[0] * 2 + 1
	IF arr[1] >= $7F THEN arr[1] = arr[1] - 1
	IFB arr[1] >= $9E THEN
		arr[1] = arr[1] - $7D
		arr[0] = arr[0] + 1
	ELSE
		arr[1] = arr[1] - $1F
	ENDIF
	res[0] = COPY("0" + decToHex(arr[0]), LENGTH("0" + decToHex(arr[0])) - 1)
	res[1] = COPY("0" + decToHex(arr[1]), LENGTH("0" + decToHex(arr[1])) - 1)
	RESULT = JOIN(res, "")
FEND

//////////////////////////////////////////////////
// 【引数】
//   bin : 2進数 
//   signFlg : 符号付きならばTrue 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION binToDec(bin, signFlg = TRUE)
	DIM dec = 0
	DIM decimalFlg = IIF(POS(".", bin), TRUE, FALSE)
	IFB COPY(bin, 1, 1) = "1" AND signFlg THEN
		// 負数
		// ビット反転用の値
		// 最上位ビット
		DIM msb = IIF(decimalFlg, POS(".", bin) - 1, LENGTH(bin))
		// 最下位ビット
		DIM lsb = IIF(decimalFlg, POS(".", bin) - LENGTH(bin), 0)
		// 整数部
		DIM dec2 = POWER(2, msb) - 1
		// 小数部
		FOR i = -1 TO lsb STEP -1
			dec2 = dec2 + POWER(2, i)
		NEXT
		DIM a = binToDec(bin, FALSE)
		DIM b = dec2
		dec = -1 * (bitXor(a, b) + POWER(2, lsb))
	ELSE
		// 正数（先頭ビットが0、もしくは、signFlgがFalse）
		IFB decimalFlg THEN
			// 小数部分
			DIM integer = COPY(bin, 1, POS(".", bin) - 1)
			DIM decimal = COPY(bin, POS(".", bin) + 1)
			FOR i = 1 TO LENGTH(decimal)
				dec = dec + COPY(decimal, i, 1) * POWER(2, -1 * i)
			NEXT
		ELSE
			integer = bin
		ENDIF
		// 整数部分
		FOR i = 1 TO LENGTH(integer)
			dec = dec + COPY(integer, i, 1) * POWER(2, LENGTH(integer) - i)
		NEXT
	ENDIF
	RESULT = dec
FEND

//////////////////////////////////////////////////
// 【引数】
//   arg1 : 数値1（10進数） 
//   arg2 : 数値2（10進数） 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION bitXor(arg1, arg2)
	DIM args[1] = arg1, arg2
	DIM bins[1]
	DIM decimals[1]
	DIM integers[1]
	DIM keta[1]
	IFB ABS(arg1) <> arg1 OR ABS(arg2) <> arg2 THEN
		RESULT = ERR_VALUE
		EXIT
	ENDIF
	FOR i = 0 TO 1
		bins[i] = decToBin(args[i])
		decimals[i] = 0
		IFB POS(".", bins[i]) <> 0 THEN
			integers[i] = COPY(bins[i], 1, POS(".", bins[i]) - 1)
			decimals[i] = COPY(bins[i], POS(".", bins[i]) + 1)
		ELSE
			integers[i] = bins[i]
		ENDIF
	NEXT
	keta[0] = IIF(LENGTH(integers[0]) > LENGTH(integers[1]), LENGTH(integers[0]), LENGTH(integers[1]))
	integers[0] = strPad(integers[0], keta[0], "0", LEFT)
	integers[1] = strPad(integers[1], keta[0], "0", LEFT)
	keta[1] = IIF(LENGTH(decimals[0]) > LENGTH(decimals[1]), LENGTH(decimals[0]), LENGTH(decimals[1]))
	decimals[0] = strPad(decimals[0], keta[1], "0", RIGHT)
	decimals[1] = strPad(decimals[1], keta[1], "0", RIGHT)
	DIM bin = ""
	FOR i = 1 TO keta[0]
		bin = bin + (VAL(COPY(integers[0], i, 1)) XOR VAL(COPY(integers[1], i, 1)))
	NEXT
	bin = bin + "."
	FOR i = 1 TO keta[1]
		bin = bin + (VAL(COPY(decimals[0], i, 1)) XOR VAL(COPY(decimals[1], i, 1)))
	NEXT
	RESULT = binToDec(bin)
FEND

//////////////////////////////////////////////////
// 【引数】
//   dec : 10進数 
//   signFlg : 符号付きならばTrue 
//   digits : 桁数 
//   recursive : 再帰処理の深さ。処理する際に必要なだけで指定する必要はありません。 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION decToBin(dec, signFlg = FALSE, digits = FALSE, recursive = 1)
	DIM bin = ""
	DIM decimalFlg = IIF(POS(".", dec) <> 0, TRUE, FALSE)
	DIM negativeFlg = IIF(dec < 0, TRUE, FALSE)
	dec = ABS(dec)
	DIM integer = IIF(decimalFlg, COPY(dec, 1, POS(".", dec) - 1), dec)
	DIM offset = POWER(10, LENGTH(dec) - POS(".", dec))
	DIM decimal = IIF(decimalFlg, COPY(dec, POS(".", dec) + 1) / offset, 0)
	REPEAT
		bin = (integer MOD 2) + bin
		integer = INT(integer / 2)
	UNTIL integer = 0
	IFB decimalFlg THEN
		bin = bin + "."
		DIM loop = 0
		REPEAT
			loop = loop + 1
			decimal = decimal * 2
			bin = bin + IIF(decimal >= 1, "1", "0")
			IF decimal > 1 THEN decimal = decimal - 1
		UNTIL decimal = 1 OR loop >= 16
		WHILE loop MOD 4 <> 0
			loop = loop + 1
			bin = bin + "0"
		WEND
	ENDIF
	WHILE LENGTH(REPLACE(bin, ".", "")) MOD 8 <> 0
		bin = "0" + bin
	WEND
	IFB negativeFlg THEN
		DIM msb = IIF(decimalFlg, POS(".", bin) - 1, LENGTH(bin))
		DIM lsb = IIF(decimalFlg , POS(".", bin) - LENGTH(bin), 0)
		DIM a = binToDec(bin)
		DIM b = POWER(2, msb) - 1
		FOR i = -1 TO lsb STEP -1
			b = b + POWER(2, i)
		NEXT
  		dec = bitXor(a, b) + POWER(2, lsb)
 		bin = decToBin(dec, signFlg, digits, recursive + 1)
	ENDIF
	IFB recursive = 1 THEN
		DIM bit = COPY(bin, 1, 1)
 		DIM len = LENGTH(REPLACE(bin, ".", ""))
		IF negativeFlg AND (bit = "0" OR len MOD 2 <> 0) THEN bin = strRepeat("1", IIF(len MOD 2 <> 0, 4, 8)) + bin
		IF !negativeFlg AND (bit = "1" OR len MOD 2 <> 0) THEN bin = strRepeat("0", IIF(len MOD 2 <> 0, 4, 8)) + bin
	ENDIF
	RESULT = bin
FEND

//////////////////////////////////////////////////
// 【引数】
//   dec : 10進数 
//   signFlg : 符号付きならばTrue 
//   recursive : 再帰処理の深さ 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION decToHex(dec, signFlg = FALSE, recursive = 1)
	DIM hex = ""
	DIM array[] = "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "A", "B", "C", "D", "E", "F"
	DIM decimalFlg = IIF(POS(".", dec) <> 0, TRUE, FALSE)
	DIM negativeFlg = IIF(dec < 0, TRUE, FALSE)
	dec = ABS(dec)
	DIM integer = IIF(decimalFlg, COPY(dec, 1, POS(".", dec) - 1), dec)
	DIM offset = POWER(10, LENGTH(dec) - POS(".", dec))
	DIM decimal = IIF(decimalFlg, COPY(dec, POS(".", dec) + 1) / offset, 0)
	REPEAT
		hex = array[integer MOD 16] + hex
		integer = INT(integer / 16)
	UNTIL integer = 0
	IFB decimalFlg THEN
		hex = hex + "."
		DIM loop = 0
		REPEAT
			loop = loop + 1
			decimal = decimal * 16
			hex = hex + array[decimal]
			offset = POWER(10, LENGTH(decimal) - POS(".", decimal))
			decimal = (decimal * offset - INT(decimal) * offset) / offset
		UNTIL decimal = 0 OR loop >= 4
	ENDIF
	IFB negativeFlg THEN
		DIM bin = hexToBin(hex)
		DIM msb = IIF(decimalFlg, POS(".", bin) - 1, LENGTH(bin))
		DIM lsb = IIF(decimalFlg, POS(".", bin) - LENGTH(bin), 0)
		DIM a = hexToDec(hex)
		DIM b = POWER(2, msb) - 1
		FOR i = -1 TO lsb STEP -1
			b = b + POWER(2, i)
		NEXT
		dec = bitXor(a, b) + POWER(2, lsb)
		hex = decToHex(dec, signFlg, recursive + 1)
	ENDIF
	IFB recursive = 1 THEN
		DIM bit = COPY(hexToBin(COPY(hex, 1, 1)), 1, 1)
		DIM len = LENGTH(REPLACE(hex, ".", ""))
		IF negativeFlg AND (bit = "0" OR len MOD 2 <> 0) THEN hex = strRepeat("F", IIF(len MOD 2 <> 0, 1, 2)) + hex
		IF !negativeFlg AND (bit = "1" OR len MOD 2 <> 0) THEN hex = strRepeat("0", IIF(len MOD 2 <> 0, 1, 2)) + hex
	ENDIF
	RESULT = hex
FEND

//////////////////////////////////////////////////
// 【引数】
//   hex : 16進数 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION hexToBin(hex)
	HASHTBL hb
	hb["0"] = "0000";	hb["1"] = "0001";	hb["2"] = "0010";	hb["3"] = "0011";
	hb["4"] = "0100";	hb["5"] = "0101";	hb["6"] = "0110";	hb["7"] = "0111";
	hb["8"] = "1000";	hb["9"] = "1001";	hb["A"] = "1010";	hb["B"] = "1011";
	hb["C"] = "1100";	hb["D"] = "1101";	hb["E"] = "1110";	hb["F"] = "1111";
	DIM bin = ""
	IFB POS(".", hex) <> 0 THEN
		FOR i = 1 TO LENGTH(hex)
			DIM str = COPY(hex, i, 1)
			IF str = "." THEN bin = bin + "."
			bin = bin + hb[str]
		NEXT
	ELSE
		FOR i = 1 TO LENGTH(hex)
			bin = bin + hb[COPY(hex, i, 1)]
		NEXT
	ENDIF
	RESULT = bin
FEND

//////////////////////////////////////////////////
// 【引数】
//   hex : 16進数 
//   signFlg : 符号付きならばTrue 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION hexToDec(hex, signFlg = TRUE)
	hex = STRCONV(hex, SC_UPPERCASE)
	DIM dec = 0
	DIM decimalFlg = IIF(POS(".", hex) <> 0, TRUE, FALSE)
	hex = IIF(LENGTH(REPLACE(hex,".", "" )) MOD 2 <> 0, "0", "") + hex
	DIM negativeFlg = IIF(COPY(hexToBin(hex), 1, 1) = "1", TRUE, FALSE)
	DIM sign = 1
	IF negativeFlg AND signFlg THEN sign = -1
	IFB negativeFlg AND signFlg THEN
		DIM bin = hexToBin(hex)
		DIM msb = IIF(decimalFlg, POS(".", bin) - 1, LENGTH(bin))
		DIM lsb = IIF(decimalFlg, POS(".", bin) - LENGTH(bin), 0)
		DIM a = hexToDec(hex, FALSE)
		DIM b = POWER(2, msb) - 1
		FOR i = -1 TO lsb STEP -1
			b = b + POWER(2, i)
		NEXT
		DIM dec2 = bitXor(a, b) + POWER(2, lsb)
		hex = decToHex(dec2)
	ENDIF
	integer = IIF(decimalFlg, COPY(hex, 1, POS(".", hex) - 1), hex)
	decimal = IIF(decimalFlg, COPY(hex, POS(".", hex) + 1), "0")
	FOR i = 1 TO LENGTH(integer)
		s = COPY(hex, i, 1)
		num = IIF(CHKNUM(s), s, ASC(s) - (ASC("A") - 10))
		dec = dec + num * POWER(16, LENGTH(integer) - i)
	NEXT
	FOR i = 1 TO LENGTH(decimal)
		s = COPY(decimal, i, 1)
		num = IIF(CHKNUM(s), s, ASC(s) - (ASC("A") - 10))
		dec = dec + num * POWER(16, -1 * i)
	NEXT
	RESULT = sign * dec
FEND

//////////////////////////////////////////////////
// 【引数】
//   expr : 評価する式 
//   truepart : 評価した式がTrueのときに返す値 
//   falsepart : 評価した式がFalseのときに返す値 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION IIF(expr, truepart, falsepart)
	IFB EVAL(expr) THEN
		RESULT = truepart
	ELSE
		RESULT = falsepart
	ENDIF
FEND

//////////////////////////////////////////////////
// 【引数】
//   num : 符号を求める数値 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION sign(num)
	SELECT TRUE
		CASE !CHKNUM(num)
			RESULT = ERR_VALUE
		CASE num > 0
			RESULT = 1
		CASE num = 0
			RESULT = 0
		CASE num < 0
			RESULT = -1
	SELEND
FEND

//////////////////////////////////////////////////
// 【引数】
//   input : 入力文字列 
//   length : 埋めたあとの長さ 
//   str : 埋める文字 
//   type : 埋める方向 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION strPad(input, length, str = " ", type = RIGHT)
	DIM s = ""
	SELECT type
		CASE LEFT
			FOR i = 1 TO CEIL((length - LENGTH(input)) / LENGTH(str))
				s = s + str
			NEXT
			input = COPY(s, 1, length - LENGTH(input)) + input
		CASE RIGHT
			FOR i = 1 TO CEIL((length - LENGTH(input)) / LENGTH(str))
				s = s + str
			NEXT
			input = input + COPY(s, 1, length - LENGTH(input))
	SELEND
	RESULT = input
FEND

//////////////////////////////////////////////////
// 【引数】
//   inputs : 繰り返す文字列 
//   multiplier : inputsを繰り返す回数 
// 【戻り値】
//   
//////////////////////////////////////////////////
FUNCTION strRepeat(inputs, multiplier)
	DIM res = ""
	FOR n = 1 TO multiplier
		res = res + inputs
	NEXT
	RESULT = res
FEND