func formatToA(i int, v string) string {
	f, err := strconv.ParseFloat(v, 64)
	if err != nil {
		return v
	}
	if f < 0 {
		t := int(math.Abs(f))
		return fmt.Sprintf("(%d)", t)
	}
	t := int(f)
	return fmt.Sprintf("%d", t)
}
formatToA provides function to convert original string to special format as
string type by given built-in number formats code and cell string.
package excelize
import (
	"encoding/json"
	"encoding/xml"
	"fmt"
	"math"
	"strconv"
	"strings"
)
var builtInNumFmt = map[int]string{
	0:  "general",
	1:  "0",
	2:  "0.00",
	3:  "#,##0",
	4:  "#,##0.00",
	9:  "0%",
	10: "0.00%",
	11: "0.00e+00",
	12: "# ?/?",
	13: "# ??/??",
	14: "mm-dd-yy",
	15: "d-mmm-yy",
	16: "d-mmm",
	17: "mmm-yy",
	18: "h:mm am/pm",
	19: "h:mm:ss am/pm",
	20: "h:mm",
	21: "h:mm:ss",
	22: "m/d/yy h:mm",
	37: "#,##0 ;(#,##0)",
	38: "#,##0 ;[red](#,##0)",
	39: "#,##0.00;(#,##0.00)",
	40: "#,##0.00;[red](#,##0.00)",
	41: `_(* #,##0_);_(* \(#,##0\);_(* "-"_);_(@_)`,
	42: `_("$"* #,##0_);_("$* \(#,##0\);_("$"* "-"_);_(@_)`,
	43: `_(* #,##0.00_);_(* \(#,##0.00\);_(* "-"??_);_(@_)`,
	44: `_("$"* #,##0.00_);_("$"* \(#,##0.00\);_("$"* "-"??_);_(@_)`,
	45: "mm:ss",
	46: "[h]:mm:ss",
	47: "mmss.0",
	48: "##0.0e+0",
	49: "@",
}
// langNumFmt defined number format code (with unicode values provided for
// language glyphs where they occur) in different language.
var langNumFmt = map[string]map[int]string{
	"zh-tw": {
		27: "[$-404]e/m/d",
		28: `[$-404]e"年"m"月"d"日"`,
		29: `[$-404]e"年"m"月"d"日"`,
		30: "m/d/yy",
		31: `yyyy"年"m"月"d"日"`,
		32: `hh"時"mm"分"`,
		33: `hh"時"mm"分"ss"秒"`,
		34: `上午/下午 hh"時"mm"分"`,
		35: `上午/下午 hh"時"mm"分"ss"秒"`,
		36: "[$-404]e/m/d",
		50: "[$-404]e/m/d",
		51: `[$-404]e"年"m"月"d"日"`,
		52: `上午/下午 hh"時"mm"分"`,
		53: `上午/下午 hh"時"mm"分"ss"秒"`,
		54: `[$-404]e"年"m"月"d"日"`,
		55: `上午/下午 hh"時"mm"分"`,
		56: `上午/下午 hh"時"mm"分"ss"秒"`,
		57: "[$-404]e/m/d",
		58: `[$-404]e"年"m"月"d"日"`,
	},
	"zh-cn": {
		27: `yyyy"年"m"月"`,
		28: `m"月"d"日"`,
		29: `m"月"d"日"`,
		30: "m-d-yy",
		31: `yyyy"年"m"月"d"日"`,
		32: `h"时"mm"分"`,
		33: `h"时"mm"分"ss"秒"`,
		34: `上午/下午 h"时"mm"分"`,
		35: `上午/下午 h"时"mm"分"ss"秒"`,
		36: `yyyy"年"m"月"`,
		50: `yyyy"年"m"月"`,
		51: `m"月"d"日"`,
		52: `yyyy"年"m"月"`,
		53: `m"月"d"日"`,
		54: `m"月"d"日"`,
		55: `上午/下午 h"时"mm"分"`,
		56: `上午/下午 h"时"mm"分"ss"秒"`,
		57: `yyyy"年"m"月"`,
		58: `m"月"d"日"`,
	},
	"zh-tw_unicode": {
		27: "[$-404]e/m/d",
		28: `[$-404]e"5E74"m"6708"d"65E5"`,
		29: `[$-404]e"5E74"m"6708"d"65E5"`,
		30: "m/d/yy",
		31: `yyyy"5E74"m"6708"d"65E5"`,
		32: `hh"6642"mm"5206"`,
		33: `hh"6642"mm"5206"ss"79D2"`,
		34: `4E0A5348/4E0B5348hh"6642"mm"5206"`,
		35: `4E0A5348/4E0B5348hh"6642"mm"5206"ss"79D2"`,
		36: "[$-404]e/m/d",
		50: "[$-404]e/m/d",
		51: `[$-404]e"5E74"m"6708"d"65E5"`,
		52: `4E0A5348/4E0B5348hh"6642"mm"5206"`,
		53: `4E0A5348/4E0B5348hh"6642"mm"5206"ss"79D2"`,
		54: `[$-404]e"5E74"m"6708"d"65E5"`,
		55: `4E0A5348/4E0B5348hh"6642"mm"5206"`,
		56: `4E0A5348/4E0B5348hh"6642"mm"5206"ss"79D2"`,
		57: "[$-404]e/m/d",
		58: `[$-404]e"5E74"m"6708"d"65E5"`,
	},
	"zh-cn_unicode": {
		27: `yyyy"5E74"m"6708"`,
		28: `m"6708"d"65E5"`,
		29: `m"6708"d"65E5"`,
		30: "m-d-yy",
		31: `yyyy"5E74"m"6708"d"65E5"`,
		32: `h"65F6"mm"5206"`,
		33: `h"65F6"mm"5206"ss"79D2"`,
		34: `4E0A5348/4E0B5348h"65F6"mm"5206"`,
		35: `4E0A5348/4E0B5348h"65F6"mm"5206"ss"79D2"`,
		36: `yyyy"5E74"m"6708"`,
		50: `yyyy"5E74"m"6708"`,
		51: `m"6708"d"65E5"`,
		52: `yyyy"5E74"m"6708"`,
		53: `m"6708"d"65E5"`,
		54: `m"6708"d"65E5"`,
		55: `4E0A5348/4E0B5348h"65F6"mm"5206"`,
		56: `4E0A5348/4E0B5348h"65F6"mm"5206"ss"79D2"`,
		57: `yyyy"5E74"m"6708"`,
		58: `m"6708"d"65E5"`,
	},
	"ja-jp": {
		27: "[$-411]ge.m.d",
		28: `[$-411]ggge"年"m"月"d"日"`,
		29: `[$-411]ggge"年"m"月"d"日"`,
		30: "m/d/yy",
		31: `yyyy"年"m"月"d"日"`,
		32: `h"時"mm"分"`,
		33: `h"時"mm"分"ss"秒"`,
		34: `yyyy"年"m"月"`,
		35: `m"月"d"日"`,
		36: "[$-411]ge.m.d",
		50: "[$-411]ge.m.d",
		51: `[$-411]ggge"年"m"月"d"日"`,
		52: `yyyy"年"m"月"`,
		53: `m"月"d"日"`,
		54: `[$-411]ggge"年"m"月"d"日"`,
		55: `yyyy"年"m"月"`,
		56: `m"月"d"日"`,
		57: "[$-411]ge.m.d",
		58: `[$-411]ggge"年"m"月"d"日"`,
	},
	"ko-kr": {
		27: `yyyy"年" mm"月" dd"日"`,
		28: "mm-dd",
		29: "mm-dd",
		30: "mm-dd-yy",
		31: `yyyy"년" mm"월" dd"일"`,
		32: `h"시" mm"분"`,
		33: `h"시" mm"분" ss"초"`,
		34: `yyyy-mm-dd`,
		35: `yyyy-mm-dd`,
		36: `yyyy"年" mm"月" dd"日"`,
		50: `yyyy"年" mm"月" dd"日"`,
		51: "mm-dd",
		52: "yyyy-mm-dd",
		53: "yyyy-mm-dd",
		54: "mm-dd",
		55: "yyyy-mm-dd",
		56: "yyyy-mm-dd",
		57: `yyyy"年" mm"月" dd"日"`,
		58: "mm-dd",
	},
	"ja-jp_unicode": {
		27: "[$-411]ge.m.d",
		28: `[$-411]ggge"5E74"m"6708"d"65E5"`,
		29: `[$-411]ggge"5E74"m"6708"d"65E5"`,
		30: "m/d/yy",
		31: `yyyy"5E74"m"6708"d"65E5"`,
		32: `h"6642"mm"5206"`,
		33: `h"6642"mm"5206"ss"79D2"`,
		34: `yyyy"5E74"m"6708"`,
		35: `m"6708"d"65E5"`,
		36: "[$-411]ge.m.d",
		50: "[$-411]ge.m.d",
		51: `[$-411]ggge"5E74"m"6708"d"65E5"`,
		52: `yyyy"5E74"m"6708"`,
		53: `m"6708"d"65E5"`,
		54: `[$-411]ggge"5E74"m"6708"d"65E5"`,
		55: `yyyy"5E74"m"6708"`,
		56: `m"6708"d"65E5"`,
		57: "[$-411]ge.m.d",
		58: `[$-411]ggge"5E74"m"6708"d"65E5"`,
	},
	"ko-kr_unicode": {
		27: `yyyy"5E74" mm"6708" dd"65E5"`,
		28: "mm-dd",
		29: "mm-dd",
		30: "mm-dd-yy",
		31: `yyyy"B144" mm"C6D4" dd"C77C"`,
		32: `h"C2DC" mm"BD84"`,
		33: `h"C2DC" mm"BD84" ss"CD08"`,
		34: "yyyy-mm-dd",
		35: "yyyy-mm-dd",
		36: `yyyy"5E74" mm"6708" dd"65E5"`,
		50: `yyyy"5E74" mm"6708" dd"65E5"`,
		51: "mm-dd",
		52: "yyyy-mm-dd",
		53: "yyyy-mm-dd",
		54: "mm-dd",
		55: "yyyy-mm-dd",
		56: "yyyy-mm-dd",
		57: `yyyy"5E74" mm"6708" dd"65E5"`,
		58: "mm-dd",
	},
	"th-th": {
		59: "t0",
		60: "t0.00",
		61: "t#,##0",
		62: "t#,##0.00",
		67: "t0%",
		68: "t0.00%",
		69: "t# ?/?",
		70: "t# ??/??",
		71: "ว/ด/ปปปป",
		72: "ว-ดดด-ปป",
		73: "ว-ดดด",
		74: "ดดด-ปป",
		75: "ช:นน",
		76: "ช:นน:ทท",
		77: "ว/ด/ปปปป ช:นน",
		78: "นน:ทท",
		79: "[ช]:นน:ทท",
		80: "นน:ทท.0",
		81: "d/m/bb",
	},
	"th-th_unicode": {
		59: "t0",
		60: "t0.00",
		61: "t#,##0",
		62: "t#,##0.00",
		67: "t0%",
		68: "t0.00%",
		69: "t# ?/?",
		70: "t# ??/??",
		71: "0E27/0E14/0E1B0E1B0E1B0E1B",
		72: "0E27-0E140E140E14-0E1B0E1B",
		73: "0E27-0E140E140E14",
		74: "0E140E140E14-0E1B0E1B",
		75: "0E0A:0E190E19",
		76: "0E0A:0E190E19:0E170E17",
		77: "0E27/0E14/0E1B0E1B0E1B0E1B 0E0A:0E190E19",
		78: "0E190E19:0E170E17",
		79: "[0E0A]:0E190E19:0E170E17",
		80: "0E190E19:0E170E17.0",
		81: "d/m/bb",
	},
}
// currencyNumFmt defined the currency number format map.
var currencyNumFmt = map[int]string{
	164: `"CN¥",##0.00`,
	165: "[$$-409]#,##0.00",
	166: "[$$-45C]#,##0.00",
	167: "[$$-1004]#,##0.00",
	168: "[$$-404]#,##0.00",
	169: "[$$-C09]#,##0.00",
	170: "[$$-2809]#,##0.00",
	171: "[$$-1009]#,##0.00",
	172: "[$$-2009]#,##0.00",
	173: "[$$-1409]#,##0.00",
	174: "[$$-4809]#,##0.00",
	175: "[$$-2C09]#,##0.00",
	176: "[$$-2409]#,##0.00",
	177: "[$$-1000]#,##0.00",
	178: `#,##0.00\ [$$-C0C]`,
	179: "[$$-475]#,##0.00",
	180: "[$$-83E]#,##0.00",
	181: `[$$-86B]\ #,##0.00`,
	182: `[$$-340A]\ #,##0.00`,
	183: "[$$-240A]#,##0.00",
	184: `[$$-300A]\ #,##0.00`,
	185: "[$$-440A]#,##0.00",
	186: "[$$-80A]#,##0.00",
	187: "[$$-500A]#,##0.00",
	188: "[$$-540A]#,##0.00",
	189: `[$$-380A]\ #,##0.00`,
	190: "[$£-809]#,##0.00",
	191: "[$£-491]#,##0.00",
	192: "[$£-452]#,##0.00",
	193: "[$¥-804]#,##0.00",
	194: "[$¥-411]#,##0.00",
	195: "[$¥-478]#,##0.00",
	196: "[$¥-451]#,##0.00",
	197: "[$¥-480]#,##0.00",
	198: "#,##0.00\\ [$\u058F-42B]",
	199: "[$\u060B-463]#,##0.00",
	200: "[$\u060B-48C]#,##0.00",
	201: "[$\u09F3-845]\\ #,##0.00",
	202: "#,##0.00[$\u17DB-453]",
	203: "[$\u20A1-140A]#,##0.00",
	204: "[$\u20A6-468]\\ #,##0.00",
	205: "[$\u20A6-470]\\ #,##0.00",
	206: "[$\u20A9-412]#,##0.00",
	207: "[$\u20AA-40D]\\ #,##0.00",
	208: "#,##0.00\\ [$\u20AB-42A]",
	209: "#,##0.00\\ [$\u20AC-42D]",
	210: "#,##0.00\\ [$\u20AC-47E]",
	211: "#,##0.00\\ [$\u20AC-403]",
	212: "#,##0.00\\ [$\u20AC-483]",
	213: "[$\u20AC-813]\\ #,##0.00",
	214: "[$\u20AC-413]\\ #,##0.00",
	215: "[$\u20AC-1809]#,##0.00",
	216: "#,##0.00\\ [$\u20AC-425]",
	217: "[$\u20AC-2]\\ #,##0.00",
	218: "#,##0.00\\ [$\u20AC-1]",
	219: "#,##0.00\\ [$\u20AC-40B]",
	220: "#,##0.00\\ [$\u20AC-80C]",
	221: "#,##0.00\\ [$\u20AC-40C]",
	222: "#,##0.00\\ [$\u20AC-140C]",
	223: "#,##0.00\\ [$\u20AC-180C]",
	224: "[$\u20AC-200C]#,##0.00",
	225: "#,##0.00\\ [$\u20AC-456]",
	226: "#,##0.00\\ [$\u20AC-C07]",
	227: "#,##0.00\\ [$\u20AC-407]",
	228: "#,##0.00\\ [$\u20AC-1007]",
	229: "#,##0.00\\ [$\u20AC-408]",
	230: "#,##0.00\\ [$\u20AC-243B]",
	231: "[$\u20AC-83C]#,##0.00",
	232: "[$\u20AC-410]\\ #,##0.00",
	233: "[$\u20AC-476]#,##0.00",
	234: "#,##0.00\\ [$\u20AC-2C1A]",
	235: "[$\u20AC-426]\\ #,##0.00",
	236: "#,##0.00\\ [$\u20AC-427]",
	237: "#,##0.00\\ [$\u20AC-82E]",
	238: "#,##0.00\\ [$\u20AC-46E]",
	239: "[$\u20AC-43A]#,##0.00",
	240: "#,##0.00\\ [$\u20AC-C3B]",
	241: "#,##0.00\\ [$\u20AC-482]",
	242: "#,##0.00\\ [$\u20AC-816]",
	243: "#,##0.00\\ [$\u20AC-301A]",
	244: "#,##0.00\\ [$\u20AC-203B]",
	245: "#,##0.00\\ [$\u20AC-41B]",
	246: "#,##0.00\\ [$\u20AC-424]",
	247: "#,##0.00\\ [$\u20AC-C0A]",
	248: "#,##0.00\\ [$\u20AC-81D]",
	249: "#,##0.00\\ [$\u20AC-484]",
	250: "#,##0.00\\ [$\u20AC-42E]",
	251: "[$\u20AC-462]\\ #,##0.00",
	252: "#,##0.00\\ [$₭-454]",
	253: "#,##0.00\\ [$₮-450]",
	254: "[$\u20AE-C50]#,##0.00",
	255: "[$\u20B1-3409]#,##0.00",
	256: "[$\u20B1-464]#,##0.00",
	257: "#,##0.00[$\u20B4-422]",
	258: "[$\u20B8-43F]#,##0.00",
	259: "[$\u20B9-460]#,##0.00",
	260: "[$\u20B9-4009]\\ #,##0.00",
	261: "[$\u20B9-447]\\ #,##0.00",
	262: "[$\u20B9-439]\\ #,##0.00",
	263: "[$\u20B9-44B]\\ #,##0.00",
	264: "[$\u20B9-860]#,##0.00",
	265: "[$\u20B9-457]\\ #,##0.00",
	266: "[$\u20B9-458]#,##0.00",
	267: "[$\u20B9-44E]\\ #,##0.00",
	268: "[$\u20B9-861]#,##0.00",
	269: "[$\u20B9-448]\\ #,##0.00",
	270: "[$\u20B9-446]\\ #,##0.00",
	271: "[$\u20B9-44F]\\ #,##0.00",
	272: "[$\u20B9-459]#,##0.00",
	273: "[$\u20B9-449]\\ #,##0.00",
	274: "[$\u20B9-820]#,##0.00",
	275: "#,##0.00\\ [$\u20BA-41F]",
	276: "#,##0.00\\ [$\u20BC-42C]",
	277: "#,##0.00\\ [$\u20BC-82C]",
	278: "#,##0.00\\ [$\u20BD-419]",
	279: "#,##0.00[$\u20BD-485]",
	280: "#,##0.00\\ [$\u20BE-437]",
	281: "[$B/.-180A]\\ #,##0.00",
	282: "[$Br-472]#,##0.00",
	283: "[$Br-477]#,##0.00",
	284: "#,##0.00[$Br-473]",
	285: "[$Bs-46B]\\ #,##0.00",
	286: "[$Bs-400A]\\ #,##0.00",
	287: "[$Bs.-200A]\\ #,##0.00",
	288: "[$BWP-832]\\ #,##0.00",
	289: "[$C$-4C0A]#,##0.00",
	290: "[$CA$-85D]#,##0.00",
	291: "[$CA$-47C]#,##0.00",
	292: "[$CA$-45D]#,##0.00",
	293: "[$CFA-340C]#,##0.00",
	294: "[$CFA-280C]#,##0.00",
	295: "#,##0.00\\ [$CFA-867]",
	296: "#,##0.00\\ [$CFA-488]",
	297: "#,##0.00\\ [$CHF-100C]",
	298: "[$CHF-1407]\\ #,##0.00",
	299: "[$CHF-807]\\ #,##0.00",
	300: "[$CHF-810]\\ #,##0.00",
	301: "[$CHF-417]\\ #,##0.00",
	302: "[$CLP-47A]\\ #,##0.00",
	303: "[$CN¥-850]#,##0.00",
	304: "#,##0.00\\ [$DZD-85F]",
	305: "[$FCFA-2C0C]#,##0.00",
	306: "#,##0.00\\ [$Ft-40E]",
	307: "[$G-3C0C]#,##0.00",
	308: "[$Gs.-3C0A]\\ #,##0.00",
	309: "[$GTQ-486]#,##0.00",
	310: "[$HK$-C04]#,##0.00",
	311: "[$HK$-3C09]#,##0.00",
	312: "#,##0.00\\ [$HRK-41A]",
	313: "[$IDR-3809]#,##0.00",
	314: "[$IQD-492]#,##0.00",
	315: "#,##0.00\\ [$ISK-40F]",
	316: "[$K-455]#,##0.00",
	317: "#,##0.00\\ [$K\u010D-405]",
	318: "#,##0.00\\ [$KM-141A]",
	319: "#,##0.00\\ [$KM-101A]",
	320: "#,##0.00\\ [$KM-181A]",
	321: "[$kr-438]\\ #,##0.00",
	322: "[$kr-43B]\\ #,##0.00",
	323: "#,##0.00\\ [$kr-83B]",
	324: "[$kr-414]\\ #,##0.00",
	325: "[$kr-814]\\ #,##0.00",
	326: "#,##0.00\\ [$kr-41D]",
	327: "[$kr.-406]\\ #,##0.00",
	328: "[$kr.-46F]\\ #,##0.00",
	329: "[$Ksh-441]#,##0.00",
	330: "[$L-818]#,##0.00",
	331: "[$L-819]#,##0.00",
	332: "[$L-480A]\\ #,##0.00",
	333: "#,##0.00\\ [$Lek\u00EB-41C]",
	334: "[$MAD-45F]#,##0.00",
	335: "[$MAD-380C]#,##0.00",
	336: "#,##0.00\\ [$MAD-105F]",
	337: "[$MOP$-1404]#,##0.00",
	338: "#,##0.00\\ [$MVR-465]_-",
	339: "#,##0.00[$Nfk-873]",
	340: "[$NGN-466]#,##0.00",
	341: "[$NGN-467]#,##0.00",
	342: "[$NGN-469]#,##0.00",
	343: "[$NGN-471]#,##0.00",
	344: "[$NOK-103B]\\ #,##0.00",
	345: "[$NOK-183B]\\ #,##0.00",
	346: "[$NZ$-481]#,##0.00",
	347: "[$PKR-859]\\ #,##0.00",
	348: "[$PYG-474]#,##0.00",
	349: "[$Q-100A]#,##0.00",
	350: "[$R-436]\\ #,##0.00",
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	439: "[$BTN]\\ #,##0.00",
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	445: "[$CHE]\\ #,##0.00",
	446: "[$CHF]\\ #,##0.00",
	447: "[$CHW]\\ #,##0.00",
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	449: "[$CLP]\\ #,##0.00",
	450: "[$CNY]\\ #,##0.00",
	451: "[$COP]\\ #,##0.00",
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	456: "[$CVE]\\ #,##0.00",
	457: "[$CYP]\\ #,##0.00",
	458: "[$CZK]\\ #,##0.00",
	459: "[$DEM]\\ #,##0.00",
	460: "[$DJF]\\ #,##0.00",
	461: "[$DKK]\\ #,##0.00",
	462: "[$DOP]\\ #,##0.00",
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	581: "[$SYP]\\ #,##0.00",
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	589: "[$TOP]\\ #,##0.00",
	590: "[$TRL]\\ #,##0.00",
	591: "[$TRY]\\ #,##0.00",
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	596: "[$UGX]\\ #,##0.00",
	597: "[$USD]\\ #,##0.00",
	598: "[$USN]\\ #,##0.00",
	599: "[$USS]\\ #,##0.00",
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	606: "[$VUV]\\ #,##0.00",
	607: "[$WST]\\ #,##0.00",
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	609: "[$XAG]\\ #,##0.00",
	610: "[$XAU]\\ #,##0.00",
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	612: "[$XBA]\\ #,##0.00",
	613: "[$XBB]\\ #,##0.00",
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	617: "[$XDR]\\ #,##0.00",
	618: "[$XFO]\\ #,##0.00",
	619: "[$XFU]\\ #,##0.00",
	620: "[$XOF]\\ #,##0.00",
	621: "[$XPD]\\ #,##0.00",
	622: "[$XPF]\\ #,##0.00",
	623: "[$XPT]\\ #,##0.00",
	624: "[$XTS]\\ #,##0.00",
	625: "[$XXX]\\ #,##0.00",
	626: "[$YER]\\ #,##0.00",
	627: "[$YUM]\\ #,##0.00",
	628: "[$ZAR]\\ #,##0.00",
	629: "[$ZMK]\\ #,##0.00",
	630: "[$ZMW]\\ #,##0.00",
	631: "[$ZWD]\\ #,##0.00",
	632: "[$ZWL]\\ #,##0.00",
	633: "[$ZWN]\\ #,##0.00",
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}
// builtInNumFmtFunc defined the format conversion functions map. Partial format
// code doesn't support currently and will return original string.
var builtInNumFmtFunc = map[int]func(i int, v string) string{
	0:  formatToString,
	1:  formatToInt,
	2:  formatToFloat,
	3:  formatToInt,
	4:  formatToFloat,
	9:  formatToC,
	10: formatToD,
	11: formatToE,
	12: formatToString, // Doesn't support currently
	13: formatToString, // Doesn't support currently
	14: parseTime,
	15: parseTime,
	16: parseTime,
	17: parseTime,
	18: parseTime,
	19: parseTime,
	20: parseTime,
	21: parseTime,
	22: parseTime,
	37: formatToA,
	38: formatToA,
	39: formatToB,
	40: formatToB,
	41: formatToString, // Doesn't support currently
	42: formatToString, // Doesn't support currently
	43: formatToString, // Doesn't support currently
	44: formatToString, // Doesn't support currently
	45: parseTime,
	46: parseTime,
	47: parseTime,
	48: formatToE,
	49: formatToString,
}
// validType defined the list of valid validation types.
var validType = map[string]string{
	"cell":          "cellIs",
	"date":          "date", // Doesn't support currently
	"time":          "time", // Doesn't support currently
	"average":       "aboveAverage",
	"duplicate":     "duplicateValues",
	"unique":        "uniqueValues",
	"top":           "top10",
	"bottom":        "top10",
	"text":          "text",              // Doesn't support currently
	"time_period":   "timePeriod",        // Doesn't support currently
	"blanks":        "containsBlanks",    // Doesn't support currently
	"no_blanks":     "notContainsBlanks", // Doesn't support currently
	"errors":        "containsErrors",    // Doesn't support currently
	"no_errors":     "notContainsErrors", // Doesn't support currently
	"2_color_scale": "2_color_scale",
	"3_color_scale": "3_color_scale",
	"data_bar":      "dataBar",
	"formula":       "expression",
}
// criteriaType defined the list of valid criteria types.
var criteriaType = map[string]string{
	"between":      "between",
	"not between":  "notBetween",
	"equal to":     "equal",
	"=":            "equal",
	"==":           "equal",
	"not equal to": "notEqual",
	"!=":           "notEqual",
	"<>":           "notEqual",
	"greater than": "greaterThan",
	">":            "greaterThan",
	"less than":    "lessThan",
	"<":            "lessThan",
	"greater than or equal to": "greaterThanOrEqual",
	">=": "greaterThanOrEqual",
	"less than or equal to": "lessThanOrEqual",
	"<=":             "lessThanOrEqual",
	"containing":     "containsText",
	"not containing": "notContains",
	"begins with":    "beginsWith",
	"ends with":      "endsWith",
	"yesterday":      "yesterday",
	"today":          "today",
	"last 7 days":    "last7Days",
	"last week":      "lastWeek",
	"this week":      "thisWeek",
	"continue week":  "continueWeek",
	"last month":     "lastMonth",
	"this month":     "thisMonth",
	"continue month": "continueMonth",
}
// formatToString provides function to return original string by given built-in
// number formats code and cell string.
func formatToString(i int, v string) string {
	return v
}
// formatToInt provides function to convert original string to integer format as
// string type by given built-in number formats code and cell string.
func formatToInt(i int, v string) string {
	f, err := strconv.ParseFloat(v, 64)
	if err != nil {
		return v
	}
	return fmt.Sprintf("%d", int(f))
}
// formatToFloat provides function to convert original string to float format as
// string type by given built-in number formats code and cell string.
func formatToFloat(i int, v string) string {
	f, err := strconv.ParseFloat(v, 64)
	if err != nil {
		return v
	}
	return fmt.Sprintf("%.2f", f)
}