private ExtractOption CombineOptions(ExtractOption[] options)
{
ExtractOption extractOption = 0;
if (options != null && options.Length != 0)
{
ExtractOption[] extractOptionArray = options;
extractOption = extractOptionArray.Aggregate(extractOption, (current, t) => current | t);
}
return(extractOption);
}
/// <summary>
/// Extracts all entries to directory.
/// </summary>
/// <param name="outputDirectory">Directory to extract files.</param>
/// <param name="options">Specifies extracting options. </param>
public void ExtractFiles(string outputDirectory, ExtractOption options)
{
var entries = _vdfsReader.ReadEntries(true).ToArray();
if (options == ExtractOption.Hierarchy)
{
var tree = new VdfsEntriesTreeGenerator(entries).Generate();
saveFiles(tree, outputDirectory);
}
else
{
saveFiles(entries, outputDirectory);
}
}
public OperateResult <ExtractedResult> Extract(string path, ExtractOption[] options)
{
OperateResult <ExtractedResult> operateResult = new OperateResult <ExtractedResult>();
ExtractOption extractOption = CombineOptions(options);
string extension = Path.GetExtension(path);
ICollection <DocumentExtractor> extractors = ExtractorFactory.GetExtractors(extension);
if (extractors == null || extractors.Count == 0)
{
operateResult.Status = OperateStatus.Failure;
operateResult.Description = "没有对应的处理程序";
return(operateResult);
}
bool flag = false;
if (!File.Exists(path))
{
operateResult.Status = OperateStatus.Failure;
operateResult.Description = string.Concat("不存在该文件:", path);
return(operateResult);
}
byte[] numArray = File.ReadAllBytes(path);
try
{
foreach (DocumentExtractor extractor in extractors)
{
operateResult.Data = extractor.Extract(extension, numArray, extractOption);
if (operateResult.Data == null)
{
continue;
}
flag = true;
break;
}
}
catch (Exception exception)
{
operateResult.Status = OperateStatus.Failure;
operateResult.Description = string.Concat("抽取出错：", exception.Message, Environment.NewLine, exception.StackTrace);
LoggerWrapper.Logger.Error("ExtractText", exception);
}
if (!flag)
{
operateResult.Status = OperateStatus.Failure;
operateResult.Description = "抽取出错";
}
return(operateResult);
}
public ExtractedResult Extract(string extensionName, byte[] data, ExtractOption extractOptions)
{
if (!CanBeExtracted(extensionName, data))
{
return(null);
}
ExtractedResult extractedResult1 = new ExtractedResult();
if ((extractOptions & ExtractOption.Text) == ExtractOption.Text)
{
try
{
extractedResult1.Text = ExtractText(extensionName, data);
if ((extractOptions & ExtractOption.Image) == ExtractOption.Image)
{
try
{
extractedResult1.Images = ExtractAndCompressImages(extensionName, data);
}
catch (Exception exception)
{
LoggerWrapper.Logger.Error("抽取图片", exception);
}
}
ExtractedFilterFactory.Filter(extractedResult1);
return(extractedResult1);
}
catch (Exception exception1)
{
LoggerWrapper.Logger.Error("抽取文本", exception1);
}
return(null);
}
if ((extractOptions & ExtractOption.Image) == ExtractOption.Image)
{
try
{
extractedResult1.Images = ExtractAndCompressImages(extensionName, data);
}
catch (Exception exception)
{
LoggerWrapper.Logger.Error("抽取图片", exception);
}
}
ExtractedFilterFactory.Filter(extractedResult1);
return(extractedResult1);
}
