/// <include file='FileHelperAsyncEngine.docs.xml' path='doc/BeginReadStream/*'/> public void BeginReadStream(TextReader reader) { if (reader == null) { throw new ArgumentNullException("reader", "The TextReader can´t be null."); } if (mAsyncWriter != null) { throw new BadUsageException("You can't start to read while you are writing."); } NewLineDelimitedRecordReader recordReader = new NewLineDelimitedRecordReader(reader); ResetFields(); mHeaderText = String.Empty; mFooterText = String.Empty; if (mRecordInfo.mIgnoreFirst > 0) { for (int i = 0; i < mRecordInfo.mIgnoreFirst; i++) { string temp = recordReader.ReadRecord(); mLineNumber++; if (temp != null) { mHeaderText += temp + StringHelper.NewLine; } else { break; } } } mAsyncReader = new ForwardReader(recordReader, mRecordInfo.mIgnoreLast, mLineNumber); mAsyncReader.DiscardForward = true; mState = EngineState.Reading; }
private T[] ReadStream(TextReader reader, int maxRecords, DataTable dt) #endif { #endif if (reader == null) { throw new ArgumentNullException("reader", "The reader of the Stream can´t be null"); } NewLineDelimitedRecordReader recordReader = new NewLineDelimitedRecordReader(reader); ResetFields(); mHeaderText = String.Empty; mFooterText = String.Empty; ArrayList resArray = new ArrayList(); int currentRecord = 0; using (ForwardReader freader = new ForwardReader(recordReader, mRecordInfo.mIgnoreLast)) { freader.DiscardForward = true; string currentLine, completeLine; mLineNumber = 1; completeLine = freader.ReadNextLine(); currentLine = completeLine; #if !MINI ProgressHelper.Notify(mNotifyHandler, mProgressMode, 0, -1); #endif if (mRecordInfo.mIgnoreFirst > 0) { for (int i = 0; i < mRecordInfo.mIgnoreFirst && currentLine != null; i++) { mHeaderText += currentLine + StringHelper.NewLine; currentLine = freader.ReadNextLine(); mLineNumber++; } } bool byPass = false; if (maxRecords < 0) { maxRecords = int.MaxValue; } LineInfo line = new LineInfo(currentLine); line.mReader = freader; object[] values = new object[mRecordInfo.mFieldCount]; while (currentLine != null && currentRecord < maxRecords) { try { mTotalRecords++; currentRecord++; line.ReLoad(currentLine); bool skip = false; #if !MINI ProgressHelper.Notify(mNotifyHandler, mProgressMode, currentRecord, -1); #if !GENERICS BeforeReadRecordEventArgs e = new BeforeReadRecordEventArgs(currentLine, LineNumber); #else BeforeReadRecordEventArgs <T> e = new BeforeReadRecordEventArgs <T>(currentLine, LineNumber); #endif skip = OnBeforeReadRecord(e); if (e.RecordLineChanged) { line.ReLoad(e.RecordLine); } #endif if (skip == false) { object record = mRecordInfo.StringToRecord(line, values); #if !MINI #if !GENERICS skip = OnAfterReadRecord(currentLine, record); #else skip = OnAfterReadRecord(currentLine, (T)record); #endif #endif if (skip == false && record != null) { #if MINI resArray.Add(record); #else if (dt == null) { resArray.Add(record); } else { dt.Rows.Add(mRecordInfo.RecordToValues(record)); } #endif } } } catch (Exception ex) { switch (mErrorManager.ErrorMode) { case ErrorMode.ThrowException: byPass = true; throw; case ErrorMode.IgnoreAndContinue: break; case ErrorMode.SaveAndContinue: ErrorInfo err = new ErrorInfo(); err.mLineNumber = freader.LineNumber; err.mExceptionInfo = ex; // err.mColumnNumber = mColumnNum; err.mRecordString = completeLine; mErrorManager.AddError(err); break; } } finally { if (byPass == false) { currentLine = freader.ReadNextLine(); completeLine = currentLine; mLineNumber++; } } } if (mRecordInfo.mIgnoreLast > 0) { mFooterText = freader.RemainingText; } } #if !GENERICS return((object[]) #else return (T[]) #endif resArray.ToArray(RecordType)); }