private Format ( StringBuilder sb, string format, object arg, IFormatProvider formatProvider, int &maxLength ) : bool | ||
sb | StringBuilder | String builder to which formatted string should be appended. |
format | string | Format string containing formatting specifications. |
arg | object | An object to format. |
formatProvider | IFormatProvider | An object that supplies format information about the current instance. |
maxLength | int | /// Maximum number of characters allowed to the formatter. Formatting will fail (and return false) /// if this number of characters is breached. Multi-lined formatters will ignore this parameter. /// Negative value indicates that formatter has unlimited space available. On output contains remaining number of characters available. /// |
Résultat | bool |
/// <summary> /// Converts the value of a specified object to an equivalent string representation using /// specified format and culture-specific formatting information. /// </summary> /// <param name="sb">String builder to which formatted string should be appended.</param> /// <param name="format">A format string containing formatting specifications.</param> /// <param name="arg">An object to format.</param> /// <param name="formatProvider">An object that supplies format information about the current instance.</param> /// <param name="maxLength"> /// Maximum number of characters allowed to the formatter. Formatting will fail (and return false) /// if this number of characters is breached. Multi-lined formatters will ignore this parameter. /// Negative value indicates that formatter has unlimited space available. On output contains remaining number of characters available. /// </param> /// <returns> /// true if representation of <paramref name="arg" /> has been successfully appended to <paramref name="sb" /> /// within given number of allowed characters; otherwise false. /// </returns> internal override bool Format(StringBuilder sb, string format, object arg, IFormatProvider formatProvider, ref int maxLength) { var success = true; var originalLength = sb.Length; if (PushCurrentObject(arg)) { if (ShowDataType) { var instanceType = GetInstanceType(arg); success = success && AppendFriendlyTypeName(instanceType, arg, sb, ref maxLength); } if (sb.Length > originalLength) { success = FormatInfoUtils.TryAppendChar(this, sb, ' ', success, ref maxLength); } success = FormatInfoUtils.TryAppendString(this, sb, FirstContainedValuePrefix, success, ref maxLength); if (arg != null) { IncIndentationLevel(true); var array = (Array) arg; var rows = array.GetLength(0); var cafi = new CompactArrayFormatInfo(this); cafi.ShowItemsOnly = true; cafi.FieldLength = GetMaxValueLength(array); var rowNumberFormatProvider = new ScalarFormatInfo(VerboseFormatInfo.SingleLinedFormat); rowNumberFormatProvider.ShowDataType = false; rowNumberFormatProvider.ShowInstanceName = false; if (IsMultiLinedFormat) { rowNumberFormatProvider.FieldLength = rowNumberFormatProvider.GetValueLength(rows); } for (var i = 0; i < rows; i++) { if (i == rows - 1) { DecIndentationLevel(); IncIndentationLevel(false); // There are no more rows in the matrix cafi.DecIndentationLevel(); cafi.IncIndentationLevel(false); } success = success && FormatLinePrefix(sb, true, i == rows - 1, false, 0, ref maxLength); success = FormatInfoUtils.TryAppendString(this, sb, "Row ", success, ref maxLength); success = success && rowNumberFormatProvider.Format(sb, null, i, rowNumberFormatProvider, ref maxLength); success = FormatInfoUtils.TryAppendChar(this, sb, ' ', success, ref maxLength); success = FormatInfoUtils.TryAppendString(this, sb, FirstContainedValuePrefix, success, ref maxLength); // Now we should append row content, which is obtained differently in case of matrix and in case of jagged array if (array.Rank == 1) { // Array is jagged var row = (Array) array.GetValue(i); cafi.ShowLastDimension = false; success = success && cafi.Format(sb, null, row, cafi, ref maxLength); } else { // Array is a matrix cafi.HeadingIndices = new[] { i }; cafi.ShowLastDimension = true; success = success && cafi.Format(sb, null, array, cafi, ref maxLength); cafi.HeadingIndices = null; } success = FormatInfoUtils.TryAppendString(this, sb, LastContainedValueSuffix, success, ref maxLength); } DecIndentationLevel(); } success = FormatInfoUtils.TryAppendString(this, sb, LastContainedValueSuffix, success, ref maxLength); PopCurrentObject(); } else { success = success && FormatInfoUtils.ReportInfiniteLoop(sb, arg, InstanceName, ref maxLength); } if (!success) { sb.Length = originalLength; } return success; }
/// <summary> /// Converts the value of a specified object to an equivalent string representation using /// specified format and culture-specific formatting information. /// </summary> /// <param name="sb">String builder to which formatted string should be appended.</param> /// <param name="format">A format string containing formatting specifications.</param> /// <param name="arg">An object to format.</param> /// <param name="formatProvider">An object that supplies format information about the current instance.</param> /// <param name="maxLength"> /// Maximum number of characters allowed to the formatter. Formatting will fail (and return false) /// if this number of characters is breached. Multi-lined formatters will ignore this parameter. /// Negative value indicates that formatter has unlimited space available. On output contains remaining number of characters available. /// </param> /// <returns> /// true if representation of <paramref name="arg" /> has been successfully appended to <paramref name="sb" /> /// within given number of allowed characters; otherwise false. /// </returns> internal override bool Format(StringBuilder sb, string format, object arg, IFormatProvider formatProvider, ref int maxLength) { var success = true; var originalLength = sb.Length; if (PushCurrentObject(arg)) { if (ShowDataType) { var instanceType = GetInstanceType(arg); success = success && AppendFriendlyTypeName(instanceType, arg, sb, ref maxLength); } if (sb.Length > originalLength) { success = FormatInfoUtils.TryAppendChar(this, sb, ' ', success, ref maxLength); } success = FormatInfoUtils.TryAppendString(this, sb, FirstContainedValuePrefix, success, ref maxLength); if (arg != null) { IncIndentationLevel(true); var array = (Array)arg; var rows = array.GetLength(0); var cafi = new CompactArrayFormatInfo(this); cafi.ShowItemsOnly = true; cafi.FieldLength = GetMaxValueLength(array); var rowNumberFormatProvider = new ScalarFormatInfo(VerboseFormatInfo.SingleLinedFormat); rowNumberFormatProvider.ShowDataType = false; rowNumberFormatProvider.ShowInstanceName = false; if (IsMultiLinedFormat) { rowNumberFormatProvider.FieldLength = rowNumberFormatProvider.GetValueLength(rows); } for (var i = 0; i < rows; i++) { if (i == rows - 1) { DecIndentationLevel(); IncIndentationLevel(false); // There are no more rows in the matrix cafi.DecIndentationLevel(); cafi.IncIndentationLevel(false); } success = success && FormatLinePrefix(sb, true, i == rows - 1, false, 0, ref maxLength); success = FormatInfoUtils.TryAppendString(this, sb, "Row ", success, ref maxLength); success = success && rowNumberFormatProvider.Format(sb, null, i, rowNumberFormatProvider, ref maxLength); success = FormatInfoUtils.TryAppendChar(this, sb, ' ', success, ref maxLength); success = FormatInfoUtils.TryAppendString(this, sb, FirstContainedValuePrefix, success, ref maxLength); // Now we should append row content, which is obtained differently in case of matrix and in case of jagged array if (array.Rank == 1) { // Array is jagged var row = (Array)array.GetValue(i); cafi.ShowLastDimension = false; success = success && cafi.Format(sb, null, row, cafi, ref maxLength); } else { // Array is a matrix cafi.HeadingIndices = new[] { i }; cafi.ShowLastDimension = true; success = success && cafi.Format(sb, null, array, cafi, ref maxLength); cafi.HeadingIndices = null; } success = FormatInfoUtils.TryAppendString(this, sb, LastContainedValueSuffix, success, ref maxLength); } DecIndentationLevel(); } success = FormatInfoUtils.TryAppendString(this, sb, LastContainedValueSuffix, success, ref maxLength); PopCurrentObject(); } else { success = success && FormatInfoUtils.ReportInfiniteLoop(sb, arg, InstanceName, ref maxLength); } if (!success) { sb.Length = originalLength; } return(success); }
/// <summary> /// Converts the value of a specified array to an equivalent string representation using /// specified format and culture-specific formatting information. /// </summary> /// <param name="sb">String builder to which formatted string should be appended.</param> /// <param name="format">A format string containing formatting specifications.</param> /// <param name="arg">An object to format.</param> /// <param name="formatProvider">An object that supplies format information about the current instance.</param> /// <param name="maxLength"> /// Maximum number of characters allowed to the formatter. Formatting will fail (and return false) /// if this number of characters is breached. Multi-lined formatters will ignore this parameter. /// Negative value indicates that formatter has unlimited space available. /// </param> /// <returns> /// true if representation of <paramref name="arg" /> has been successfully appended to <paramref name="sb" /> /// within given number of allowed characters; otherwise false. /// </returns> internal override bool Format(StringBuilder sb, string format, object arg, IFormatProvider formatProvider, ref int maxLength) { var success = true; var originalLength = sb.Length; var array = (Array)arg; var rank = array.Rank; if (rank > 1 || PushCurrentObject(arg)) { _currentInstance = array; var prevFieldLength = _fieldLength; UpdateFieldLength(sb); // Autonomously updates field length if that will help better format values from the array if (!_showItemsOnly && ShowDataType) { success = success && AppendInstanceTypeName(arg, sb, ref maxLength); success = FormatInfoUtils.TryAppendSpaceIfNeeded(this, sb, success, ref maxLength); success = FormatInfoUtils.TryAppendString(this, sb, FirstContainedValuePrefix, success, ref maxLength); } var enumerator = GetEnumerator(); var sfi = new ScalarFormatInfo(this); sfi.ShowDataType = false; sfi.ShowInstanceName = false; sfi.FieldLength = _fieldLength; var linePrefixLength = GetCurrentLineLength(sb); var lineStartPos = sb.Length; var isFirstValueInLine = true; var repeatLastValue = false; while (success && (repeatLastValue || enumerator.MoveNext())) { // At every position it might happen that line should be broken and formatting continued on the following line var prevLineLength = sb.Length - lineStartPos; string delimiter = null; if (isFirstValueInLine) { delimiter = ""; } else if (IsMultiLinedFormat) { delimiter = " "; } else { delimiter = FieldDelimiter; } success = FormatInfoUtils.TryAppendString(this, sb, delimiter, success, ref maxLength); success = success && sfi.Format(sb, null, enumerator.Current, sfi, ref maxLength); isFirstValueInLine = false; repeatLastValue = false; if (IsMultiLinedFormat && _maxLineLength > 0 && sb.Length - lineStartPos > _maxLineLength && !isFirstValueInLine) { // Maximum line length has been breached in the multi-lined format // As a consequence, last value should be deleted from output, new line should be started and last value formatted again sb.Length = prevLineLength + lineStartPos; success = success && FormatLinePrefix(sb, true, false, true, linePrefixLength, ref maxLength); lineStartPos = sb.Length; repeatLastValue = true; isFirstValueInLine = true; } } if (!_showItemsOnly) { success = FormatInfoUtils.TryAppendString(this, sb, LastContainedValueSuffix, success, ref maxLength); } _fieldLength = prevFieldLength; // Restore field length to value before this method was called if (rank == 1) { PopCurrentObject(); } } else { success = success && FormatInfoUtils.ReportInfiniteLoop(sb, arg, InstanceName, ref maxLength); } if (!success) { sb.Length = originalLength; } return(success); }