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PriceUtil.cs
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using System;
using System.Collections.Generic;
using System.Diagnostics;
namespace DigitalPlatform.Text
{
#if REMOVED
public class PriceUtil
{
#region 级联操作函数
public static string Add(string strText1, string strText2)
{
PriceUtil currency = new PriceUtil(strText1);
return currency.Add(strText2).ToString();
}
string _current = ""; // 金额字符串
public PriceUtil()
{
}
public PriceUtil(string strText)
{
this._current = strText;
}
public PriceUtil Set(string strText)
{
this._current = strText;
return this;
}
public PriceUtil Clear()
{
this._current = "";
return this;
}
public PriceUtil Add(string strText)
{
return this.Operator(strText, "+");
}
public PriceUtil Substract(string strText)
{
return this.Operator(strText, "-");
}
public PriceUtil Mutiple(string strText)
{
return this.Operator(strText, "*");
}
public PriceUtil Divide(string strText)
{
return this.Operator(strText, "/");
}
#if NO
public PriceUtil Operator(string strText, string strOperator)
{
int nRet = 0;
string strError = "";
string strResult = "";
if (strOperator == "*" || strOperator == "/")
{
if (string.IsNullOrEmpty(this._current)
|| string.IsNullOrEmpty(strText))
throw new ArgumentException("乘法和除法运算要求两个操作数都不能为空");
string strString = this._current + strOperator + strText;
nRet = SumPrices(strString,
out strResult,
out strError);
if (nRet == -1)
{
strError = strError + " (SumPrices)'" + strString + "'";
throw new Exception(strError);
}
this._current = strResult;
return this;
}
if (string.IsNullOrEmpty(strText))
return this;
List<string> prices = new List<string>();
string s1 = "";
nRet = SumPrices(this._current,
out s1,
out strError);
if (nRet == -1)
{
strError = strError + " (SumPrices)'" + this._current + "'";
throw new Exception(strError);
}
string s2 = "";
if (strOperator == "-")
{
nRet = NegativePrices(strText,
true,
out s2,
out strError);
if (nRet == -1)
{
strError = strError + " (NegativePrices)'" + strText + "'";
throw new Exception(strError);
}
}
else
{
nRet = SumPrices(strText,
out s2,
out strError);
if (nRet == -1)
{
strError = strError + " (SumPrices)'" + strText + "'";
throw new Exception(strError);
}
}
prices.Add(s1);
prices.Add(s2);
nRet = TotalPrice(prices,
out strResult,
out strError);
if (nRet == -1)
{
strError = strError + " (TotalPrices)'" + StringUtil.MakePathList(prices) + "'";
throw new Exception(strError);
}
this._current = strResult;
return this;
}
#endif
public PriceUtil Operator(string strText, string strOperator)
{
int nRet = 0;
string strError = "";
string strResult = "";
if (strOperator == "*" || strOperator == "/")
{
if (string.IsNullOrEmpty(this._current)
|| string.IsNullOrEmpty(strText))
throw new ArgumentException("乘法和除法运算要求两个操作数都不能为空");
string strString = this._current + strOperator + strText;
nRet = SumPrices(strString,
out strResult,
out strError);
if (nRet == -1)
{
strError = strError + " (SumPrices)'" + strString + "'";
throw new Exception(strError);
}
this._current = strResult;
return this;
}
if (string.IsNullOrEmpty(strText))
return this;
string s2 = "";
if (strOperator == "-")
{
nRet = NegativePrices(strText,
true,
out s2,
out strError);
if (nRet == -1)
{
strError = strError + " (NegativePrices)'" + strText + "'";
throw new Exception(strError);
}
}
else
{
#if NO
nRet = SumPrices(strText,
out s2,
out strError);
if (nRet == -1)
{
strError = strError + " (SumPrices)'" + strText + "'";
throw new Exception(strError);
}
#endif
s2 = strText;
}
string s3 = JoinPriceString(this._current, s2);
nRet = SumPrices(s3,
out strResult,
out strError);
if (nRet == -1)
{
strError = strError + " (SumPrices)'" + s3 + "'";
throw new Exception(strError);
}
this._current = strResult;
return this;
}
public override string ToString()
{
return this._current;
}
#endregion
// 判断两个价格字符串是否相等
public static bool IsEqual(string strPrice1, string strPrice2, string strDefaultPrefix = "CNY")
{
if (strPrice1 == strPrice2)
return true;
try
{
CurrencyItem item1 = CurrencyItem.Parse(strPrice1);
CurrencyItem item2 = CurrencyItem.Parse(strPrice2);
if (string.IsNullOrEmpty(item1.Prefix))
item1.Prefix = strDefaultPrefix;
if (string.IsNullOrEmpty(item2.Prefix))
item2.Prefix = strDefaultPrefix;
if (item1.Prefix == item2.Prefix
&& item1.Value == item2.Value
&& item1.Postfix == item2.Postfix)
return true;
return false;
}
catch
{
return false;
}
}
// 计算价格乘积
// 从PrintOrderForm中转移过来
public static int MultiPrice(string strPrice,
int nCopy,
out string strResult,
out string strError)
{
strError = "";
strResult = "";
int nRet = PriceUtil.ParsePriceUnit(strPrice,
out string strPrefix,
out string strValue,
out string strPostfix,
out strError);
if (nRet == -1)
return -1;
decimal value = 0;
try
{
value = Convert.ToDecimal(strValue);
}
catch
{
strError = "数字 '" + strValue + "' 格式不正确";
return -1;
}
value *= (decimal)nCopy;
strResult = strPrefix + value.ToString(CurrencyItem.fmt) + strPostfix;
return 0;
}
// 能够处理乘号或者除号了
public static string GetPurePrice(string strText)
{
string strError = "";
string strLeft = "";
string strRight = "";
string strOperator = "";
// 先处理乘除号
// return:
// -1 出错
// 0 没有发现乘号、除号
// 1 发现乘号或者除号
int nRet = ParseMultipcation(strText,
out strLeft,
out strRight,
out strOperator,
out strError);
if (nRet == -1)
throw new Exception(strError);
if (nRet == 0)
return OldGetPurePrice(strText);
Debug.Assert(nRet == 1, "");
string strMultiper = "";
string strPrice = "";
if (StringUtil.IsDouble(strLeft) == false
&& StringUtil.IsDouble(strRight) == false)
{
strError = "金额字符串格式错误 '" + strText + "'。乘号或除号的两边必须至少有一边是纯数字";
throw new Exception(strError);
}
if (StringUtil.IsDouble(strLeft) == false)
{
strPrice = strLeft;
strMultiper = strRight;
}
else if (StringUtil.IsDouble(strRight) == false)
{
strPrice = strRight;
strMultiper = strLeft;
if (strOperator == "/")
{
strError = "金额字符串 '" + strText + "' 格式错误。除号的右边才能是纯数字";
throw new Exception(strError);
}
}
else
{
// 默认左边是价格，右边是倍率
strPrice = strLeft;
strMultiper = strRight;
}
string strValue = OldGetPurePrice(strPrice);
decimal value = 0;
try
{
value = Convert.ToDecimal(strValue);
}
catch
{
strError = "单个金额字符串 '" + strPrice + "' 中, 数字部分 '" + strValue + "' 格式不正确";
throw new Exception(strError);
}
if (String.IsNullOrEmpty(strOperator) == false)
{
double multiper = 0;
try
{
multiper = Convert.ToDouble(strMultiper);
}
catch
{
strError = "数字 '" + strMultiper + "' 格式不正确";
throw new Exception(strError);
}
if (strOperator == "*")
{
value = (decimal)((double)value * multiper);
}
else
{
Debug.Assert(strOperator == "/", "");
if (multiper == 0)
{
strError = "金额字符串格式错误 '" + strText + "'。除法运算中，除数不能为0";
throw new Exception(strError);
}
value = (decimal)((double)value / multiper);
}
return value.ToString(CurrencyItem.fmt);
}
return strValue;
}
// 从复杂的字符串中，析出纯粹价格数字部分（包括小数点）。
// 2006/11/15 能处理数字前的正负号
public static string OldGetPurePrice(string strPrice)
{
if (String.IsNullOrEmpty(strPrice) == true)
return strPrice;
string strResult = "";
int nSegment = 0; // 0 非数字段 1数字段 2 非数字段
int nPointCount = 0;
bool bNegative = false; // 是否为负数
for (int i = 0; i < strPrice.Length; i++)
{
char ch = strPrice[i];
if ((ch <= '9' && ch >= '0')
|| ch == '.')
{
if (ch == '.')
{
if (nPointCount == 1)
break; // 已经出现过一个小数点了
nPointCount++;
}
if (nSegment == 0)
{
nSegment = 1;
}
}
else
{
if (nSegment == 0)
{
if (ch == '-')
bNegative = true;
}
if (nSegment == 1)
{
nSegment = 2;
break;
}
}
if (nSegment == 1)
strResult += ch;
}
// 如果第一个就是小数点
if (strResult.Length > 0
&& strResult[0] == '.')
{
strResult = "0" + strResult;
}
// 2008/11/15
if (bNegative == true)
return "-" + strResult;
return strResult;
}
// 汇总价格
// 货币单位不同的，互相独立
// 本函数主要用于显示，可以自动处理出错情况 -- 把错误字符串当作结果返回
// return:
// 汇总后的价格字符串，或者报错信息
public static string TotalPrice(List<string> prices)
{
int nRet = TotalPrice(prices,
out string strResult,
out string strError);
if (nRet == -1)
return strError;
return strResult;
}
// 汇总价格
// 货币单位不同的，互相独立
// 本函数还有另外一个版本，是返回List<string>的
// return:
// -1 error
// 0 succeed
public static int TotalPrice(List<string> prices,
out string strTotalPrice,
out string strError)
{
strError = "";
strTotalPrice = "";
List<string> results = null;
int nRet = TotalPrice(prices,
out results,
out strError);
if (nRet == -1)
return -1;
Debug.Assert(results != null, "");
if (results.Count == 0)
return 0;
strTotalPrice = JoinPriceString(results);
return 0;
}
// 把若干价格字符串结合起来
public static string JoinPriceString(List<string> prices)
{
string strResult = "";
for (int i = 0; i < prices.Count; i++)
{
string strPrice = prices[i].Trim();
if (String.IsNullOrEmpty(strPrice) == true)
continue;
if (strPrice[0] == '+' || strPrice[0] == '-')
strResult += strPrice;
else
{
// 第一个价格前面不用加+号
if (String.IsNullOrEmpty(strResult) == false)
strResult += "+";
strResult += strPrice;
}
}
return strResult;
}
// 连接两个价格字符串
public static string JoinPriceString(string strPrice1,
string strPrice2)
{
if (string.IsNullOrEmpty(strPrice1) == true
&& string.IsNullOrEmpty(strPrice2) == true)
return "";
if (string.IsNullOrEmpty(strPrice1) == true)
return strPrice2;
if (string.IsNullOrEmpty(strPrice2) == true)
return strPrice1;
strPrice1 = strPrice1.Trim();
strPrice2 = strPrice2.Trim();
if (String.IsNullOrEmpty(strPrice1) == true
&& String.IsNullOrEmpty(strPrice2) == true)
return "";
if (String.IsNullOrEmpty(strPrice1) == true)
return strPrice2;
if (String.IsNullOrEmpty(strPrice2) == true)
return strPrice1;
if (strPrice2[0] == '+'
|| strPrice2[0] == '-')
return strPrice1 + strPrice2;
return strPrice1 + "+" + strPrice2;
}
// 将形如"-123.4+10.55-20.3"的价格字符串反转正负号
// parameters:
// bSum 是否要顺便汇总? true表示要汇总
public static int NegativePrices(string strPrices,
bool bSum,
out string strResultPrice,
out string strError)
{
strError = "";
strResultPrice = "";
strPrices = strPrices.Trim();
if (String.IsNullOrEmpty(strPrices) == true)
return 0;
List<string> prices = null;
// 将形如"-123.4+10.55-20.3"的价格字符串切割为单个的价格字符串，并各自带上正负号
// return:
// -1 error
// 0 succeed
int nRet = SplitPrices(strPrices,
out prices,
out strError);
if (nRet == -1)
return -1;
// 直接每个反转
if (bSum == false)
{
for (int i = 0; i < prices.Count; i++)
{
string strOnePrice = prices[i];
if (String.IsNullOrEmpty(strOnePrice) == true)
continue;
if (strOnePrice[0] == '+')
strResultPrice += "-" + strOnePrice.Substring(1);
else if (strOnePrice[0] == '-')
strResultPrice += "+" + strOnePrice.Substring(1);
else
strResultPrice += "-" + strOnePrice; // 缺省为正数
}
return 0;
}
List<string> results = new List<string>();
// 汇总价格
// 货币单位不同的，互相独立
// return:
// -1 error
// 0 succeed
nRet = TotalPrice(prices,
out results,
out strError);
if (nRet == -1)
return -1;
for (int i = 0; i < results.Count; i++)
{
string strOnePrice = results[i];
if (String.IsNullOrEmpty(strOnePrice) == true)
continue;
if (strOnePrice[0] == '+')
strResultPrice += "-" + strOnePrice.Substring(1);
else if (strOnePrice[0] == '-')
strResultPrice += "+" + strOnePrice.Substring(1);
else
strResultPrice += "-" + strOnePrice; // 缺省为正数
}
return 0;
}
// 比较两个价格字符串
// return:
// -3 币种不同，无法直接比较 strError中有说明
// -2 error strError中有说明
// -1 strPrice1小于strPrice2
// 0 等于
// 1 strPrice1大于strPrice2
public static int Compare(string strPrice1,
string strPrice2,
out string strError)
{
strError = "";
string strPrefix1 = "";
string strValue1 = "";
string strPostfix1 = "";
int nRet = ParsePriceUnit(strPrice1,
out strPrefix1,
out strValue1,
out strPostfix1,
out strError);
if (nRet == -1)
{
strError = "金额字符串1 '" + strPrice1 + "' 解析出错: " + strError;
return -2;
}
decimal value1 = 0;
try
{
value1 = Convert.ToDecimal(strValue1);
}
catch
{
strError = "数字 '" + strValue1 + "' 格式不正确";
return -2;
}
if (strPrefix1 == "" && strPostfix1 == "")
strPrefix1 = "CNY";
string strPrefix2 = "";
string strValue2 = "";
string strPostfix2 = "";
nRet = ParsePriceUnit(strPrice2,
out strPrefix2,
out strValue2,
out strPostfix2,
out strError);
if (nRet == -1)
{
strError = "金额字符串2 '" + strPrice2 + "' 解析出错: " + strError;
return -2;
}
if (strPrefix2 == "" && strPostfix2 == "")
strPrefix2 = "CNY";
if (strPrefix1 != strPrefix2
|| strPostfix1 != strPostfix2)
{
strError = "币种不同(一个是'" + strPrice1 + "'，一个是'" + strPrice2 + "')，无法进行金额比较";
return -3;
}
decimal value2 = 0;
try
{
value2 = Convert.ToDecimal(strValue2);
}
catch
{
strError = "数字 '" + strValue2 + "' 格式不正确";
return -2;
}
if (value1 < value2)
return -1;
if (value1 == value2)
return 0;
Debug.Assert(value1 > value2, "");
return 1;
}
// 看看若干个价格字符串是否都表示了0?
// return:
// -1 出错
// 0 不为0
// 1 为0
public static int IsZero(List<string> prices,
out string strError)
{
strError = "";
List<CurrencyItem> items = new List<CurrencyItem>();
// 变换为PriceItem
for (int i = 0; i < prices.Count; i++)
{
string strPrefix = "";
string strValue = "";
string strPostfix = "";
int nRet = ParsePriceUnit(prices[i],
out strPrefix,
out strValue,
out strPostfix,
out strError);
if (nRet == -1)
return -1;
decimal value = 0;
try
{
value = Convert.ToDecimal(strValue);
}
catch
{
strError = "数字 '" + strValue + "' 格式不正确";
return -1;
}
CurrencyItem item = new CurrencyItem();
item.Prefix = strPrefix;
item.Postfix = strPostfix;
item.Value = value;
items.Add(item);
}
// 分析
for (int i = 0; i < items.Count; i++)
{
CurrencyItem item = items[i];
if (item.Value != 0)
return 0; // 中间出现了不为0的
}
return 1; // 全部为0
}
// 将形如"-123.4+10.55-20.3"的价格字符串归并汇总
public static int SumPrices(string strPrices,
out List<string> results,
out string strError)
{
strError = "";
results = new List<string>();
List<string> prices = null;
// 将形如"-123.4+10.55-20.3"的价格字符串切割为单个的价格字符串，并各自带上正负号
// return:
// -1 error
// 0 succeed
int nRet = SplitPrices(strPrices,
out prices,
out strError);
if (nRet == -1)
return -1;
// 汇总价格
// 货币单位不同的，互相独立
// return:
// -1 error
// 0 succeed
nRet = TotalPrice(prices,
out results,
out strError);
if (nRet == -1)
return -1;
return 0;
}
// 2012/3/7
// 将形如"-123.4+10.55-20.3"的价格字符串归并汇总
public static int SumPrices(string strPrices,
out string strSumPrices,
out string strError)
{
strError = "";
strSumPrices = "";
List<string> prices = null;
// 将形如"-123.4+10.55-20.3"的价格字符串切割为单个的价格字符串，并各自带上正负号
// return:
// -1 error
// 0 succeed
int nRet = SplitPrices(strPrices,
out prices,
out strError);
if (nRet == -1)
return -1;
List<string> results = new List<string>();
// 汇总价格
// 货币单位不同的，互相独立
// return:
// -1 error
// 0 succeed
nRet = TotalPrice(prices,
out results,
out strError);
if (nRet == -1)
return -1;
strSumPrices = JoinPriceString(results);
return 0;
}
// 将形如"-123.4+10.55-20.3"的价格字符串切割为单个的价格字符串，并各自带上正负号
// return:
// -1 error
// 0 succeed
public static int SplitPrices(string strPrices,
out List<string> prices,
out string strError)
{
strError = "";
prices = new List<string>();
if (strPrices == null)
strPrices = "";
// 2018/2/6
// 这里假定字符 ` 在数据中不常见。或者可以考虑使用一个更不常见的字符
strPrices = strPrices.Replace("+", "`+").Replace("-", "`-");
string[] parts = strPrices.Split(new char[] { '`' });
for (int i = 0; i < parts.Length; i++)
{
string strPart = parts[i].Trim();
if (String.IsNullOrEmpty(strPart) == true)
continue;
prices.Add(strPart);
}
return 0;
}
// 2012/3/7
// 校验金额字符串格式正确性
// return:
// -1 有错
// 0 没有错
public static int VerifyPriceFormat(
List<string> valid_formats,
string strString,
out string strError)
{
strError = "";
// 没有格式定义，就不作校验
if (valid_formats.Count == 0)
return 0;
string strPrefix = "";
string strValue = "";
string strPostfix = "";
int nRet = ParsePriceUnit(strString,
out strPrefix,
out strValue,
out strPostfix,
out strError);
if (nRet == -1)
return -1;
foreach (string fmt in valid_formats)
{
string[] parts = fmt.Split(new char[] { '|' });
string strPrefixFormat = "";
string strValueFormat = "";
string strPostfixFormat = "";
if (parts.Length > 0)
strPrefixFormat = parts[0];
if (parts.Length > 1)
strValueFormat = parts[1];
if (parts.Length > 2)
strPostfixFormat = parts[2];
if (string.IsNullOrEmpty(strPrefixFormat) == false
&& strPrefix != strPrefixFormat)
continue;
// 暂时不校验value部分
if (string.IsNullOrEmpty(strPostfixFormat) == false
&& strPostfix != strPostfixFormat)
continue;
return 0;
}
strError = "金额字符串 '" + strString + "' 的格式不符合定义 '" + StringUtil.MakePathList(valid_formats) + "' 的要求";
return -1;
}
// 分析价格参数
// 允许前面出现+ -号
// return:
// -1 出错
// 0 成功
public static int ParsePriceUnit(string strString,
out string strPrefix,
out string strValue,
out string strPostfix,
out string strError)
{
strPrefix = "";
strValue = "";
strPostfix = "";
strError = "";
strString = strString.Trim();
// 去掉逗号 2012/9/1
strString = strString.Replace(",", "");
strString = strString.Replace("，", "");
if (String.IsNullOrEmpty(strString) == true)
{
strError = "金额字符串为空";
return -1;
}
bool bNegative = false; // 是否为负数
if (strString[0] == '+')
{
bNegative = false;
strString = strString.Substring(1).Trim();
}
else if (strString[0] == '-')
{
bNegative = true;
strString = strString.Substring(1).Trim();
}
if (String.IsNullOrEmpty(strString) == true)
{
strError = "金额字符串(除了正负号以外)为空";
return -1;
}
bool bInPrefix = true;
int nDotCount = 0;
for (int i = 0; i < strString.Length; i++)
{
char ch = strString[i];
if ((ch >= '0' && ch <= '9')
|| ch == '.')
{
bInPrefix = false;
strValue += ch;
if (ch == '.') // 2017/9/15
nDotCount++;
}
else
{
if (bInPrefix == true)
strPrefix += ch;
else
{
strPostfix = strString.Substring(i).Trim();
break;
}
}