// return:
// true 合法
// false 不合法。已经报错了
bool VerifyData()
{
if (this._dom == null)
{
return(true);
}
XmlNodeList nodes = _dom.DocumentElement.SelectNodes("item");
foreach (XmlElement item in nodes)
{
string strSeller = item.GetAttribute("seller");
string strTable = item.GetAttribute("table");
// 验证数据是否合法
try
{
RateItem.ParseList(strTable);
}
catch (Exception ex)
{
this.comboBox_seller.Text = strSeller;
MessageBox.Show(this, "渠道(书商) '" + strSeller + "' 的汇率表格式不合法: " + ex.Message);
return(false);
}
}
return(true);
}
public SumInfo GetSumInfo(List <RateItem> rate_table)
{
List <string> totalprices = new List <string>();
SumInfo info = new SumInfo();
info.Seller = this.Seller;
foreach (OrderListItem item in _items)
{
info.BiblioCount++;
info.CopyCount += item.Copy;
totalprices.Add(item.TotalPrice);
}
if (totalprices.Count > 1)
{
string strError = "";
List <string> sum_prices = null;
int nRet = PriceUtil.TotalPrice(totalprices,
out sum_prices,
out strError);
if (nRet == -1)
{
info.TotalPrice = strError;
}
else
{
// Debug.Assert(sum_prices.Count == 1, "");
// info.TotalPrice = sum_prices[0];
info.TotalPrice = PriceUtil.JoinPriceString(sum_prices);
}
}
else if (totalprices.Count == 1)
{
info.TotalPrice = totalprices[0];
}
// 计算汇率
if (rate_table != null && string.IsNullOrEmpty(info.TotalPrice) == false)
{
try
{
string strRatePrice = RateItem.RatePrices(
rate_table,
info.TotalPrice);
info.TotalPrice1 = strRatePrice;
if (info.TotalPrice == info.TotalPrice1)
{
info.TotalPrice1 = "";
}
}
catch (Exception ex)
{
info.TotalPrice1 = ex.Message;
}
}
return(info);
}
private void button_OK_Click(object sender, EventArgs e)
{
// 验证数据是否合法
try
{
RateItem.ParseList(this.RateList);
}
catch (Exception ex)
{
MessageBox.Show(this, ex.Message);
return;
}
this.DialogResult = System.Windows.Forms.DialogResult.OK;
this.Close();
}
// CNY1.00=USD0.22222
public static RateItem Parse(string strText)
{
if (strText.IndexOf('=') == -1)
{
throw new Exception("对照事项格式不正确，缺乏等号。'" + strText + "'");
}
List <string> parts = StringUtil.ParseTwoPart(strText, "=");
string strSource = parts[0].Trim();
string strTarget = parts[1].Trim();
RateItem result = new RateItem();
result.Source = DoubleCurrencyItem.Parse(strSource);
result.Target = DoubleCurrencyItem.Parse(strTarget);
return(result);
}
// 分号分隔。
public static List <RateItem> ParseList(string strText)
{
List <RateItem> results = new List <RateItem>();
string[] segments = strText.Split(new char[] { ';' });
foreach (string segment in segments)
{
if (string.IsNullOrEmpty(segment))
{
continue;
}
string strSegment = segment.Trim();
if (string.IsNullOrEmpty(strSegment))
{
continue;
}
results.Add(RateItem.Parse(strSegment));
}
return(results);
}
// 将形如"-CNY123.4+USD10.55-20.3"的价格字符串计算汇率
// parameters:
public static string RatePrices(
List <RateItem> rate_table,
string strPrices)
{
string strError = "";
strPrices = strPrices.Trim();
if (String.IsNullOrEmpty(strPrices) == true)
{
return("");
}
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 = PriceUtil.SplitPrices(strPrices,
out prices,
out strError);
if (nRet == -1)
{
throw new Exception(strError);
}
List <string> changed_prices = new List <string>();
foreach (string price in prices)
{
CurrencyItem item = CurrencyItem.Parse(price);
RateItem rate = FindBySource(rate_table, item.Prefix, item.Postfix);
if (rate == null)
{
changed_prices.Add(price);
continue;
}
CurrencyItem result = rate.Exchange(item);
changed_prices.Add(result.ToString());
}
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 = PriceUtil.TotalPrice(changed_prices,
out results,
out strError);
if (nRet == -1)
{
throw new Exception(strError);
}
#if NO
StringBuilder text = new StringBuilder();
for (int i = 0; i < results.Count; i++)
{
string strOnePrice = results[i];
if (String.IsNullOrEmpty(strOnePrice) == true)
{
continue;
}
if (strOnePrice[0] == '+')
{
text.Append("+" + strOnePrice.Substring(1));
}
else if (strOnePrice[0] == '-')
{
text.Append("-" + strOnePrice.Substring(1));
}
else
{
text.Append("+" + strOnePrice); // 缺省为正数
}
}
return(text.ToString().TrimStart(new char[] { '+' }));
#endif
return(PriceUtil.JoinPriceString(results));
}