public string Transform(string content)
{
if (IsDefault)
{
return(DefaultValue);
}
if (Type == ExtractType.SubString)
{
return(content.Substring(StartIndex, Length));
}
else
{
var m = ExtractPattern.Match(content);
if (m.Success)
{
try
{
if (string.IsNullOrEmpty(ResultPattern))
{
return(m.Groups[0].Value);
}
else
{
return(string.Format(ResultPattern, m.Groups.Cast <Group>().Skip(1).Select(g => g.Value as object).ToArray()));
}
}
catch (Exception e)
{
throw new ArgumentException($"Could not extract {content} using {ResultPattern} due to {e.Message}");
}
}
}
return(null);
}
public bool CanTransform(string content)
{
if (IsDefault)
{
return(true);
}
return(!String.IsNullOrWhiteSpace(content) ? ExtractPattern.IsMatch(content) : false);
}
/// <summary>
/// 加载提取模式
/// </summary>
/// <param name="fileName"></param>
private void LoadExtractPatterns(string fileName)
{
string[] lines = File.ReadAllLines(fileName, Encoding.UTF8);
foreach (var line in lines)
{
if (line.Length > 0)
{
string[] t = line.Split(new[] { "\t" }, StringSplitOptions.RemoveEmptyEntries);
ExtractPattern pattern =
new ExtractPattern(t[0], t[1]);
_extractPatterns.Add(pattern);
}
}
}
public bool CanTransform(string content)
{
if (IsDefault)
{
return(true);
}
if (Type == ExtractType.SubString)
{
return(!String.IsNullOrWhiteSpace(content) ? content.Length > StartIndex && content.Length > (StartIndex + Length) : false);
}
else
{
return(!String.IsNullOrWhiteSpace(content) ? ExtractPattern.IsMatch(content) : false);
}
}
/// <summary>
/// 加载提取模式
/// </summary>
/// <param name="fileName"></param>
private void LoadExtractPatterns(string fileName)
{
string[] lines = File.ReadAllLines(fileName, Encoding.UTF8);
foreach (var line in lines)
{
if (line.Length > 0)
{
string[] t = line.Split(new[] { "\t" }, StringSplitOptions.RemoveEmptyEntries);
ExtractPattern pattern =
new ExtractPattern(t[0], t[1]);
_extractPatterns.Add(pattern);
}
}
}
