Coffeescript脚本将人民币金额小写转换为大写

windows系统的搜狗输入法v模式可以很贴心地把人民币由小写转换为大写模式，Mac平台的输入法迄今还没有发现类似的功能。OSChina上看到一个哥们写了个java的版本的，于是依葫芦画瓢捣腾了个coffee的版本

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#! /usr/bin/env coffee

 
# convert amount from figures to words

# @author vangie.du

# @url http://codelife.me/blog/2013/03/09/convert-amount-from-figures-to-words-by-coffeescript/

# @version 1.1

# @since 2013-03-09

 
if process.argv.length >= 3

  n = parseFloat(process.argv[2]).toFixed(2)

else

	console.log "

	Usage: \n

		rmb figure_number\n

	Example:\n

		rmb 42342.33\n

		肆万贰仟叁佰肆拾贰元叁角叁分"

	process.exit(1)

 
 
fractions = ["角", "分"]

digits = ["零", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖"]

units = [["元", "万", "亿"],["", "拾", "佰", "仟"]]

 
[head, n] = if n < 0 then ['负', -n] else ['', n]

 
s = ''

fractionalPart = Math.round(n * 100) % 100

 
for i in [0..1]

	s += (digits[Math.floor(fractionalPart / Math.pow(10, 1-i)) % 10] + fractions[i])

		.replace(/(零.)+/g, "")

 
s = '整' unless s

 
intPart = Math.floor(n)

 
for i in [0..units[0].length - 1] when intPart > 0

	p = ''

	for j in [0..units[1].length - 1] when n > 0

		p = digits[intPart % 10] + units[1][j] + p

		intPart = Math.floor(intPart / 10)

	s = p.replace(/(零.)*零$/g, "").replace(/^$/g, "零") + units[0][i] + s

 
console.log(head + s.replace(/(零.)*零元/g, "元")

	.replace(/(零.)+/, "")

	.replace(/(零.)+/g, "零")

	.replace(/^整$/g, "零元整"))

将上面的文件保存为~/bin/rmb,或者其他$PATH中目录位置。

然后命令行执行

chmod + x ~/bin/rmb

rmb 42342.33

更进一步

ln -s ~/bin/rmb ~/bin/￥

￥ 42342.33

参考

  1. 人民币小写转换为大写