c# - 使用包含分隔符的元素拆分字符串

Question

我有一个看起来像这样的字符串：

'xxx',1,'yyy',0,'zzz,www',0,'','etc'

我想用逗号分隔它，但问题在于包含它的元素（字符串）。我可以逐个元素地解析这个字符串，但最好使用正则表达式之类的东西。

如果元素是字符串类型，它总是用引号引起来。

预期结果：

xxx
1
yyy
0
zzz,www
0
<empty>
etc

用于拆分的原始字符串：DA,'SHT-1',3000.00,1500.00,1.00,1,3000.00,1500.00,'1.4301-10',7.900, * '1.4301','MAX,MIN-500','C'

代码：

string SampleText = @"DA,'SHT-1',3000.00,1500.00,1.00,1,3000.00,1500.00,'1.4301-10',7.900,
*  '1.4301','MAX,MIN-500','C'";

// [1] Prepare for splitting (remove new lines, white spaces, etc);
SampleText = Regex.Replace(SampleText, @"\r\n?|\n|\*|\s", "");

// [2] replacing commas
MatchCollection mc = Regex.Matches(SampleText , "\'.*?\'");
foreach (Match mh in mc)
{
  if (mh.Value.Contains(','))
  {
    SampleText = SampleText.Replace(mh.Value, mh.Value.Replace(",", "_"));
  }
}

// splitting
string[] progHeader = SampleText.Split(new char[] { ',' });

我需要的是通过替换逗号来消除步骤。

Answer 1

如果这只是一个练习：/('[^']*')|([^,']+)/g看起来这会做（但匹配，而不是拆分）。

Answer 2

您可以尝试使用类似的东西

    public static String[] SplitCsv(String value) {
      if (Object.ReferenceEquals(null, value))
        return null;

      const Char quotation = '\'';
      const Char separator = ',';

      List<String> result = new List<String>();

      Boolean inQuotation = false;
      Boolean isStarted = false;

      StringBuilder Sb = new StringBuilder();

      foreach (Char Ch in value) {
        if (inQuotation) {
          Sb.Append(Ch);
          inQuotation = Ch != quotation;

          continue;
        }

        if (Ch == separator) {
          result.Add(Sb.ToString());
          Sb.Length = 0;
          isStarted = true;
        }
        else {
          Sb.Append(Ch);
          isStarted = false;
          inQuotation = Ch == quotation;
        }
      }

      if (isStarted || (Sb.Length > 0))
        result.Add(Sb.ToString());

      return result.ToArray();
    }

  ....

  var test1 = SplitCsv("1,2,3");   // <- ["1", "2", "3"]
  var test2 = SplitCsv("1,2,");    // <- ["1", "2", ""]
  var test3 = SplitCsv("1,'2',3"); // <- ["1", "'2'", "3"]
  var test4 = SplitCsv("1,'2,3'"); // <- ["1", "'2,3'"]
  var test5 = SplitCsv("1,''");    // <- ["1", "''"]