C# LineInfo.IsEOL方法代码示例

		protected override ExtractedInfo ExtractFieldString(LineInfo line)
		{
			if (mIsOptional && line.IsEOL() )
				return ExtractedInfo.Empty;


			if (mQuoteChar == '\0')
				return BasicExtractString(line);
			else
			{
				//TODO: UnComment and Fix

				if (mTrimMode == TrimMode.Both || mTrimMode == TrimMode.Left)
				{

					//int pos = line.mCurrentPos;
					line.TrimStart(mTrimChars);
//					from2 = from.TrimStart(mTrimChars);
					//res.CharsRemoved = line.mCurrentPos - pos;
				}

				string quotedStr = mQuoteChar.ToString();
				if (line.StartsWith(quotedStr))
				{

//					ExtractedInfo res = null;
//					res = new ExtractedInfo(line, line.mCurrentPos);

					return StringHelper.ExtractQuotedString(line, mQuoteChar, mQuoteMultiline == MultilineMode.AllowForBoth || mQuoteMultiline == MultilineMode.AllowForRead);
//					if (mQuoteMultiline == MultilineMode.AllowForBoth || mQuoteMultiline == MultilineMode.AllowForRead)
//					{
//
//						//res.ExtractedString = ei.ExtractedString;
//						//res.CharsRemoved += ei.CharsRemoved;
//						//res.ExtraLines = ei.ExtraLines;
//						//res.NewRestOfLine = ei.NewRestOfLine;
//					}
//					else
//					{
//						return StringHelper.ExtractQuotedString(from2, mQuoteChar, out index);
//						//res.CharsRemoved += index;
//					}

				//	return res;

				}
				else
				{
					if (mQuoteMode == QuoteMode.OptionalForBoth || mQuoteMode == QuoteMode.OptionalForRead)
						return BasicExtractString(line);
					else if (line.StartsWithTrim(quotedStr))
						throw new BadUsageException("The field '" + this.mFieldInfo.Name + "' has spaces before the QuotedChar at line "+ line.mReader.LineNumber.ToString() + ". Use the TrimAttribute to by pass this error. Field String: " + line.CurrentString);
					else
						throw new BadUsageException("The field '" + this.mFieldInfo.Name + "' not begin with the QuotedChar at line "+ line.mReader.LineNumber.ToString() + ". You can use FieldQuoted(QuoteMode.OptionalForRead) to allow optional quoted field.. Field String: " + line.CurrentString);
				}

			}


		}

        internal override ExtractedInfo ExtractFieldString(LineInfo line)
        {
            if (mIsOptional && line.IsEOL() )
                return ExtractedInfo.Empty;

            if (mQuoteChar == '\0')
                return BasicExtractString(line);
            else
            {
                if (mTrimMode == TrimMode.Both || mTrimMode == TrimMode.Left)
                {
                    line.TrimStart(mTrimChars);
                }

                string quotedStr = mQuoteChar.ToString();
                if (line.StartsWith(quotedStr))
                {
                    return StringHelper.ExtractQuotedString(line, mQuoteChar, mQuoteMultiline == MultilineMode.AllowForBoth || mQuoteMultiline == MultilineMode.AllowForRead);
                }
                else
                {
                    if (mQuoteMode == QuoteMode.OptionalForBoth || mQuoteMode == QuoteMode.OptionalForRead)
                        return BasicExtractString(line);
                    else if (line.StartsWithTrim(quotedStr))
                        throw new BadUsageException(string.Format("The field '{0}' has spaces before the QuotedChar at line {1}. Use the TrimAttribute to by pass this error. Field String: {2}", mFieldInfo.Name, line.mReader.LineNumber, line.CurrentString));
                    else
                        throw new BadUsageException(string.Format("The field '{0}' not begin with the QuotedChar at line {1}. You can use FieldQuoted(QuoteMode.OptionalForRead) to allow optional quoted field.. Field String: {2}", mFieldInfo.Name, line.mReader.LineNumber, line.CurrentString));
                }

            }
        }

        /// <summary>
        /// Extract the field from the delimited file, removing separators and quotes
        /// and any duplicate quotes within the record
        /// </summary>
        /// <param name="line">line containing record input</param>
        /// <returns>Extract information</returns>
        internal override ExtractedInfo ExtractFieldString(LineInfo line)
        {
            if (IsOptional && line.IsEOL())
                return ExtractedInfo.Empty;

            if (QuoteChar == '\0')
                return BasicExtractString(line);
            else {
                if (TrimMode == TrimMode.Both ||
                    TrimMode == TrimMode.Left)
                    line.TrimStart(TrimChars);

                string quotedStr = QuoteChar.ToString();
                if (line.StartsWith(quotedStr)) {
                    var res = StringHelper.ExtractQuotedString(line,
                        QuoteChar,
                        QuoteMultiline == MultilineMode.AllowForBoth || QuoteMultiline == MultilineMode.AllowForRead);

                    if (TrimMode == TrimMode.Both ||
                        TrimMode == TrimMode.Right)
                        line.TrimStart(TrimChars);

                    if (!IsLast &&
                        !line.StartsWith(Separator) &&
                        !line.IsEOL()) {
                        throw new BadUsageException(line,
                            "The field " + this.FieldInfo.Name + " is quoted but the quoted char: " + quotedStr +
                            " not is just before the separator (You can use [FieldTrim] to avoid this error)");
                    }
                    return res;
                }
                else {
                    if (QuoteMode == QuoteMode.OptionalForBoth ||
                        QuoteMode == QuoteMode.OptionalForRead)
                        return BasicExtractString(line);
                    else if (line.StartsWithTrim(quotedStr)) {
                        throw new BadUsageException(
                            string.Format(
                                "The field '{0}' has spaces before the QuotedChar at line {1}. Use the TrimAttribute to by pass this error. Field String: {2}",
                                FieldInfo.Name,
                                line.mReader.LineNumber,
                                line.CurrentString));
                    }
                    else {
                        throw new BadUsageException(
                            string.Format(
                                "The field '{0}' does not begin with the QuotedChar at line {1}. You can use FieldQuoted(QuoteMode.OptionalForRead) to allow optional quoted field. Field String: {2}",
                                FieldInfo.Name,
                                line.mReader.LineNumber,
                                line.CurrentString));
                    }
                }
            }
        }

		internal static ExtractedInfo ExtractQuotedString(LineInfo line, char quoteChar, bool allowMultiline)
		{
			//			if (line.mReader == null)
			//				throw new BadUsageException("The reader can´t be null");

			if (line.IsEOL())
				throw new BadUsageException("An empty String found and can be parsed like a QuotedString try to use SafeExtractQuotedString");

			if (line.mLine[line.mCurrentPos] != quoteChar)
				throw new BadUsageException("The source string not begins with the quote char: " + quoteChar);

			StringBuilder res = new StringBuilder(32);
			//int lines = 0;

			bool firstFound = false;

			int i = line.mCurrentPos + 1;
			//bool mustContinue = true;

			while (line.mLineStr != null)
			{
				while (i < line.mLine.Length)
				{
					if (line.mLine[i] == quoteChar)
					{
						if (firstFound == true)
						{
							// Is an escaped quoted char
							res.Append(quoteChar);
							firstFound = false;
						}
						else
						{
							firstFound = true;
						}
					}
					else
					{
						if (firstFound)
						{
							// This was the end of the string

							line.mCurrentPos = i;
							return new ExtractedInfo(res.ToString());
//							ExtractedInfo ei = ;
//							return ei;

						}
						else
						{
							res.Append(line.mLine[i]);
						}
					}
					i++;
				}


				if (firstFound)
				{
					line.mCurrentPos = i;
					return new ExtractedInfo(res.ToString());
				}
				else
				{
					if (allowMultiline == false)
						throw new BadUsageException("The current field has an UnClosed quoted string. Complete line: " + res.ToString());

					line.ReadNextLine();
					res.Append(StringHelper.NewLine);
					//lines++;
					i = 0;
				}
			}

			throw new BadUsageException("The current field has an unclosed quoted string. Complete Filed String: " + res.ToString());
		}

        /// <summary>
        /// Get the data out of the records
        /// </summary>
        /// <param name="line">Line handler containing text</param>
        /// <returns></returns>
        internal object ExtractFieldValue(LineInfo line)
        {
            //-> extract only what I need

            if (InNewLine) {
                // Any trailing characters, terminate
                if (line.EmptyFromPos() == false) {
                    throw new BadUsageException(line,
                        "Text '" + line.CurrentString +
                        "' found before the new line of the field: " + FieldInfo.Name +
                        " (this is not allowed when you use [FieldInNewLine])");
                }

                line.ReLoad(line.mReader.ReadNextLine());

                if (line.mLineStr == null) {
                    throw new BadUsageException(line,
                        "End of stream found parsing the field " + FieldInfo.Name +
                        ". Please check the class record.");
                }
            }

            if (IsArray == false) {
                ExtractedInfo info = ExtractFieldString(line);
                if (info.mCustomExtractedString == null)
                    line.mCurrentPos = info.ExtractedTo + 1;

                line.mCurrentPos += CharsToDiscard; //total;

                if (Discarded)
                    return GetDiscardedNullValue();
                else
                    return AssignFromString(info, line).Value;
            }
            else {
                if (ArrayMinLength <= 0)
                    ArrayMinLength = 0;

                int i = 0;

                var res = new ArrayList(Math.Max(ArrayMinLength, 10));

                while (line.mCurrentPos - CharsToDiscard < line.mLineStr.Length &&
                       i < ArrayMaxLength) {
                    ExtractedInfo info = ExtractFieldString(line);
                    if (info.mCustomExtractedString == null)
                        line.mCurrentPos = info.ExtractedTo + 1;

                    line.mCurrentPos += CharsToDiscard;

                    try {
                        var value = AssignFromString(info, line);

                        if (value.NullValueUsed &&
                            i == 0 &&
                            line.IsEOL())
                            break;

                        res.Add(value.Value);
                    }
                    catch (NullValueNotFoundException) {
                        if (i == 0)
                            break;
                        else
                            throw;
                    }
                    i++;
                }

                if (res.Count < ArrayMinLength) {
                    throw new InvalidOperationException(
                        string.Format(
                            "Line: {0} Column: {1} Field: {2}. The array has only {3} values, less than the minimum length of {4}",
                            line.mReader.LineNumber.ToString(),
                            line.mCurrentPos.ToString(),
                            FieldInfo.Name,
                            res.Count,
                            ArrayMinLength));
                }
                else if (IsLast && line.IsEOL() == false) {
                    throw new InvalidOperationException(
                        string.Format(
                            "Line: {0} Column: {1} Field: {2}. The array has more values than the maximum length of {3}",
                            line.mReader.LineNumber,
                            line.mCurrentPos,
                            FieldInfo.Name,
                            ArrayMaxLength));
                }

                // TODO:   is there a reason we go through all the array processing then discard it
                if (Discarded)
                    return null;
                else
                    return res.ToArray(ArrayType);
            }
//.........这里部分代码省略.........

        internal object ExtractFieldValue(LineInfo line)
        {
            //-> extract only what I need

            if (InNewLine)
            {
                if (line.EmptyFromPos() == false)
                    throw new BadUsageException(line, "Text '" + line.CurrentString +
                                                "' found before the new line of the field: " + FieldInfo.Name +
                                                " (this is not allowed when you use [FieldInNewLine])");

                line.ReLoad(line.mReader.ReadNextLine());

                if (line.mLineStr == null)
                    throw new BadUsageException(line, "End of stream found parsing the field " + FieldInfo.Name +
                                                ". Please check the class record.");
            }

            if (IsArray == false)
            {
                ExtractedInfo info = ExtractFieldString(line);
                if (info.mCustomExtractedString == null)
                    line.mCurrentPos = info.ExtractedTo + 1;

                line.mCurrentPos += CharsToDiscard; //total;

                return AssignFromString(info, line);
            }
            else
            {
                if (ArrayMinLength <= 0)
                    ArrayMinLength = 0;

                int i = 0;

                var res = new ArrayList(Math.Max(ArrayMinLength, 10));

                while (line.mCurrentPos - CharsToDiscard < line.mLine.Length && i < ArrayMaxLength)
                {
                    ExtractedInfo info = ExtractFieldString(line);
                    if (info.mCustomExtractedString == null)
                        line.mCurrentPos = info.ExtractedTo + 1;

                    line.mCurrentPos += CharsToDiscard;

                    res.Add(AssignFromString(info, line));
                    i++;
                }

                if (res.Count < ArrayMinLength)
                    throw new InvalidOperationException(string.Format("Line: {0} Column: {1} Field: {2}. The array has only {3} values, less than the minimum length of {4}", line.mReader.LineNumber.ToString(), line.mCurrentPos.ToString(), FieldInfo.Name, res.Count, ArrayMinLength));

                else if (IsLast && line.IsEOL() == false)
                    throw new InvalidOperationException(string.Format("Line: {0} Column: {1} Field: {2}. The array has more values than the maximum length of {3}", line.mReader.LineNumber, line.mCurrentPos, FieldInfo.Name, ArrayMaxLength));

                return res.ToArray(ArrayType);

            }
        }