mcs/class/System.XML/System.Xml/XmlConvert.cs

   1 //
   2 // System.Xml.XmlConvert
   3 //
   4 // Authors:
   5 //      Dwivedi, Ajay kumar (Adwiv@Yahoo.com)
   6 //      Gonzalo Paniagua Javier (gonzalo@ximian.com)
   7 //      Alan Tam Siu Lung (Tam@SiuLung.com)
   8 //      Atsushi Enomoto (ginga@kit.hi-ho.ne.jp)
   9 //
  10 // (C) 2002 Ximian, Inc (http://www.ximian.com)
  11 //
  12
  13 //
  14 // Permission is hereby granted, free of charge, to any person obtaining
  15 // a copy of this software and associated documentation files (the
  16 // "Software"), to deal in the Software without restriction, including
  17 // without limitation the rights to use, copy, modify, merge, publish,
  18 // distribute, sublicense, and/or sell copies of the Software, and to
  19 // permit persons to whom the Software is furnished to do so, subject to
  20 // the following conditions:
  21 //
  22 // The above copyright notice and this permission notice shall be
  23 // included in all copies or substantial portions of the Software.
  24 //
  25 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  26 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  27 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  28 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  29 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  30 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  31 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  32 //
  33 using System;
  34 using System.IO;
  35 using System.Text;
  36 using System.Globalization;
  37 using System.Xml.Schema;
  38
  39 namespace System.Xml {
  40
  41         public class XmlConvert {
  42
  43                 const string encodedColon = "_x003A_";
  44                 const NumberStyles floatStyle = NumberStyles.AllowCurrencySymbol |
  45                         NumberStyles.AllowExponent |
  46                         NumberStyles.AllowDecimalPoint |
  47                         NumberStyles.AllowLeadingSign;
  48
  49                 static readonly string [] datetimeFormats = {
  50                   // dateTime
  51                   "yyyy-MM-ddTHH:mm:ss",
  52                   "yyyy-MM-ddTHH:mm:ss.f",
  53                   "yyyy-MM-ddTHH:mm:ss.ff",
  54                   "yyyy-MM-ddTHH:mm:ss.fff",
  55                   "yyyy-MM-ddTHH:mm:ss.ffff",
  56                   "yyyy-MM-ddTHH:mm:ss.fffff",
  57                   "yyyy-MM-ddTHH:mm:ss.ffffff",
  58                   "yyyy-MM-ddTHH:mm:ss.fffffff",
  59                   "yyyy-MM-ddTHH:mm:sszzz",
  60                   "yyyy-MM-ddTHH:mm:ss.fzzz",
  61                   "yyyy-MM-ddTHH:mm:ss.ffzzz",
  62                   "yyyy-MM-ddTHH:mm:ss.fffzzz",
  63                   "yyyy-MM-ddTHH:mm:ss.ffffzzz",
  64                   "yyyy-MM-ddTHH:mm:ss.fffffzzz",
  65                   "yyyy-MM-ddTHH:mm:ss.ffffffzzz",
  66                   "yyyy-MM-ddTHH:mm:ss.fffffffzzz",
  67                   "yyyy-MM-ddTHH:mm:ssZ",
  68                   "yyyy-MM-ddTHH:mm:ss.fZ",
  69                   "yyyy-MM-ddTHH:mm:ss.ffZ",
  70                   "yyyy-MM-ddTHH:mm:ss.fffZ",
  71                   "yyyy-MM-ddTHH:mm:ss.ffffZ",
  72                   "yyyy-MM-ddTHH:mm:ss.fffffZ",
  73                   "yyyy-MM-ddTHH:mm:ss.ffffffZ",
  74                   "yyyy-MM-ddTHH:mm:ss.fffffffZ",
  75                   // time
  76                   "HH:mm:ss",
  77                   "HH:mm:ss.f",
  78                   "HH:mm:ss.ff",
  79                   "HH:mm:ss.fff",
  80                   "HH:mm:ss.ffff",
  81                   "HH:mm:ss.fffff",
  82                   "HH:mm:ss.ffffff",
  83                   "HH:mm:ss.fffffff",
  84                   "HH:mm:sszzz",
  85                   "HH:mm:ss.fzzz",
  86                   "HH:mm:ss.ffzzz",
  87                   "HH:mm:ss.fffzzz",
  88                   "HH:mm:ss.ffffzzz",
  89                   "HH:mm:ss.fffffzzz",
  90                   "HH:mm:ss.ffffffzzz",
  91                   "HH:mm:ss.fffffffzzz",
  92                   "HH:mm:ssZ",
  93                   "HH:mm:ss.fZ",
  94                   "HH:mm:ss.ffZ",
  95                   "HH:mm:ss.fffZ",
  96                   "HH:mm:ss.ffffZ",
  97                   "HH:mm:ss.fffffZ",
  98                   "HH:mm:ss.ffffffZ",
  99                   "HH:mm:ss.fffffffZ",
 100                   // date
 101                   "yyyy-MM-dd",
 102                   "yyyy-MM-ddzzz",
 103                   "yyyy-MM-ddZ",
 104                   // gYearMonth
 105                   "yyyy-MM",
 106                   "yyyy-MMzzz",
 107                   "yyyy-MMZ",
 108                   // gYear
 109                   "yyyy",
 110                   "yyyyzzz",
 111                   "yyyyZ",
 112                   // gMonthDay
 113                   "--MM-dd",
 114                   "--MM-ddzzz",
 115                   "--MM-ddZ",
 116                   // gDay
 117                   "---dd",
 118                   "---ddzzz",
 119                   "---ddZ",
 120                 };
 121
 122                 public XmlConvert()
 123                 {}
 124
 125                 private static string TryDecoding (string s)
 126                 {
 127                         if (s == null || s.Length < 6)
 128                                 return s;
 129
 130                         char c = '\uFFFF';
 131                         try {
 132                                 c = (char) Int32.Parse (s.Substring (1, 4), NumberStyles.HexNumber, CultureInfo.InvariantCulture);
 133                         } catch {
 134                                 return s [0] + DecodeName (s.Substring (1));
 135                         }
 136
 137                         if (s.Length == 6)
 138                                 return c.ToString ();
 139                         return c + DecodeName (s.Substring (6));
 140                 }
 141
 142                 public static string DecodeName (string name)
 143                 {
 144                         if (name == null || name.Length == 0)
 145                                 return name;
 146
 147                         int pos = name.IndexOf ('_');
 148                         if (pos == -1 || pos + 6 >= name.Length)
 149                                 return name;
 150
 151                         if ((name [pos + 1] != 'X' && name [pos + 1] != 'x') || name [pos + 6] != '_')
 152                                 return name [0] + DecodeName (name.Substring (1));
 153
 154                         return name.Substring (0, pos) + TryDecoding (name.Substring (pos + 1));
 155                 }
 156
 157                 public static string EncodeLocalName (string name)
 158                 {
 159                         if (name == null)
 160                                 return name;
 161
 162                         string encoded = EncodeName (name);
 163                         int pos = encoded.IndexOf (':');
 164                         if (pos == -1)
 165                                 return encoded;
 166                         return encoded.Replace (":", encodedColon);
 167                 }
 168
 169                 internal static bool IsInvalid (char c, bool firstOnlyLetter)
 170                 {
 171                         if (c == ':') // Special case. allowed in EncodeName, but encoded in EncodeLocalName
 172                                 return false;
 173
 174                         if (firstOnlyLetter)
 175                                 return !XmlChar.IsFirstNameChar (c);
 176                         else
 177                                 return !XmlChar.IsNameChar (c);
 178                 }
 179
 180                 private static string EncodeName (string name, bool nmtoken)
 181                 {
 182                         if (name == null || name.Length == 0)
 183                                 return name;
 184
 185                         StringBuilder sb = new StringBuilder ();
 186                         int length = name.Length;
 187                         for (int i = 0; i < length; i++) {
 188                                 char c = name [i];
 189                                 if (IsInvalid (c, i == 0 && !nmtoken))
 190                                         sb.AppendFormat ("_x{0:X4}_", (int) c);
 191                                 else if (c == '_' && i + 6 < length && name [i+1] == 'x' && name [i + 6] == '_')
 192                                         sb.Append ("_x005F_");
 193                                 else
 194                                         sb.Append (c);
 195                         }
 196                         return sb.ToString ();
 197                 }
 198
 199                 public static string EncodeName (string name)
 200                 {
 201                         return EncodeName (name, false);
 202                 }
 203
 204                 public static string EncodeNmToken (string name)
 205                 {
 206                         if (name == String.Empty)
 207                                 throw new XmlException ("Invalid NmToken: ''");
 208                         return EncodeName (name, true);
 209                 }
 210
 211                 // {true, false, 1, 0}
 212                 public static bool ToBoolean(string s)
 213                 {
 214                         s = s.Trim (XmlChar.WhitespaceChars);
 215                         switch(s)
 216                         {
 217                                 case "1":
 218                                         return true;
 219                                 case "true":
 220                                         return true;
 221                                 case "0":
 222                                         return false;
 223                                 case "false":
 224                                         return false;
 225                                 default:
 226                                         throw new FormatException(s + " is not a valid boolean value");
 227                         }
 228                 }
 229
 230                 // LAMESPEC: It has been documented as public, but is marked as internal.
 231                 internal static string ToBinHexString (byte [] buffer)
 232                 {
 233                         StringWriter w = new StringWriter ();
 234                         WriteBinHex (buffer, 0, buffer.Length, w);
 235                         return w.ToString ();
 236                 }
 237
 238                 internal static void WriteBinHex (byte [] buffer, int index, int count, TextWriter w)
 239                 {
 240                         if (buffer == null)
 241                                 throw new ArgumentNullException ("buffer");
 242                         if (index < 0) {
 243                                 throw new ArgumentOutOfRangeException (
 244 #if !NET_2_1
 245                                         "index", index,
 246 #endif
 247                                         "index must be non negative integer.");
 248                         }
 249                         if (count < 0) {
 250                                 throw new ArgumentOutOfRangeException (
 251 #if !NET_2_1
 252                                         "count", count,
 253 #endif
 254                                         "count must be non negative integer.");
 255                         }
 256                         if (buffer.Length < index + count)
 257                                 throw new ArgumentOutOfRangeException ("index and count must be smaller than the length of the buffer.");
 258
 259                         // Copied from XmlTextWriter.WriteBinHex ()
 260                         int end = index + count;
 261                         for (int i = index; i < end; i++) {
 262                                 int val = buffer [i];
 263                                 int high = val >> 4;
 264                                 int low = val & 15;
 265                                 if (high > 9)
 266                                         w.Write ((char) (high + 55));
 267                                 else
 268                                         w.Write ((char) (high + 0x30));
 269                                 if (low > 9)
 270                                         w.Write ((char) (low + 55));
 271                                 else
 272                                         w.Write ((char) (low + 0x30));
 273                         }
 274                 }
 275
 276                 public static byte ToByte(string s)
 277                 {
 278                         return Byte.Parse(s, CultureInfo.InvariantCulture);
 279                 }
 280
 281                 public static char ToChar(string s)
 282                 {
 283                         return Char.Parse(s);
 284                 }
 285
 286 #if NET_2_0
 287                 [Obsolete]
 288 #endif
 289                 public static DateTime ToDateTime (string s)
 290                 {
 291                         return ToDateTime (s, datetimeFormats);
 292                 }
 293
 294 #if NET_2_0
 295                 public static DateTime ToDateTime (string value, XmlDateTimeSerializationMode mode)
 296                 {
 297                         string modestr = null;
 298                         DateTime dt;
 299                         switch (mode) {
 300                         case XmlDateTimeSerializationMode.Local:
 301                                 dt = ToDateTime (value, "yyyy-MM-ddTHH:mm:ss.FFFFFFFzzz");
 302                                 return dt == DateTime.MinValue || dt == DateTime.MaxValue ? dt : dt.ToLocalTime ();
 303                         case XmlDateTimeSerializationMode.RoundtripKind:
 304                                 return ToDateTime (value, "yyyy-MM-ddTHH:mm:ss.FFFFFFFK");
 305                         case XmlDateTimeSerializationMode.Utc:
 306                                 dt = ToDateTime (value, "yyyy-MM-ddTHH:mm:ss.FFFFFFFZ");
 307                                 return dt == DateTime.MinValue || dt == DateTime.MaxValue ? dt : dt.ToUniversalTime ();
 308                         case XmlDateTimeSerializationMode.Unspecified:
 309                         default:
 310                                 return ToDateTime (value, "yyyy-MM-ddTHH:mm:ss.FFFFFFF");
 311                         }
 312                 }
 313 #endif
 314                 public static DateTime ToDateTime(string s, string format)
 315                 {
 316                         //DateTimeFormatInfo d = new DateTimeFormatInfo();
 317                         //d.FullDateTimePattern = format;
 318                         //return DateTime.Parse(s, d);
 319                         DateTimeStyles style = DateTimeStyles.AllowLeadingWhite |
 320                                                DateTimeStyles.AllowTrailingWhite;
 321                         return DateTime.ParseExact (s, format, DateTimeFormatInfo.InvariantInfo, style);
 322                 }
 323
 324                 public static DateTime ToDateTime(string s, string[] formats)
 325                 {
 326                         DateTimeStyles style = DateTimeStyles.AllowLeadingWhite |
 327                                                DateTimeStyles.AllowTrailingWhite;
 328                         return DateTime.ParseExact (s, formats, DateTimeFormatInfo.InvariantInfo, style);
 329                 }
 330
 331                 public static Decimal ToDecimal(string s)
 332                 {
 333                         return Decimal.Parse(s, CultureInfo.InvariantCulture);
 334                 }
 335
 336                 public static double ToDouble(string s)
 337                 {
 338                         if (s == null)
 339                                 throw new ArgumentNullException();
 340                         if (s == "INF")
 341                                 return Double.PositiveInfinity;
 342                         if (s == "-INF")
 343                                 return Double.NegativeInfinity;
 344                         if (s == "NaN")
 345                                 return Double.NaN;
 346                         return Double.Parse (s, floatStyle, CultureInfo.InvariantCulture);
 347                 }
 348
 349                 public static Guid ToGuid(string s)
 350                 {
 351                         return new Guid(s);
 352                 }
 353
 354                 public static short ToInt16(string s)
 355                 {
 356                         return Int16.Parse (s, NumberStyles.Integer, CultureInfo.InvariantCulture);
 357                 }
 358
 359                 public static int ToInt32(string s)
 360                 {
 361                         return Int32.Parse (s, NumberStyles.Integer, CultureInfo.InvariantCulture);
 362                 }
 363
 364                 public static long ToInt64(string s)
 365                 {
 366                         return Int64.Parse (s, NumberStyles.Integer, CultureInfo.InvariantCulture);
 367                 }
 368
 369                 [CLSCompliant (false)]
 370                 public static SByte ToSByte(string s)
 371                 {
 372                         return SByte.Parse(s, CultureInfo.InvariantCulture);
 373                 }
 374
 375                 public static float ToSingle(string s)
 376                 {
 377                         if (s == null)
 378                                 throw new ArgumentNullException();
 379                         if (s == "INF")
 380                                 return Single.PositiveInfinity;
 381                         if (s == "-INF")
 382                                 return Single.NegativeInfinity;
 383                         if (s == "NaN")
 384                                 return Single.NaN;
 385                         return Single.Parse(s, floatStyle, CultureInfo.InvariantCulture);
 386                 }
 387
 388                 public static string ToString(Guid value)
 389                 {
 390                         return value.ToString("D", CultureInfo.InvariantCulture);
 391                 }
 392
 393                 public static string ToString(int value)
 394                 {
 395                         return value.ToString(CultureInfo.InvariantCulture);
 396                 }
 397
 398                 public static string ToString(short value)
 399                 {
 400                         return value.ToString(CultureInfo.InvariantCulture);
 401                 }
 402
 403                 public static string ToString(byte value)
 404                 {
 405                         return value.ToString(CultureInfo.InvariantCulture);
 406                 }
 407
 408                 public static string ToString(long value)
 409                 {
 410                         return value.ToString(CultureInfo.InvariantCulture);
 411                 }
 412
 413                 public static string ToString(char value)
 414                 {
 415                         return value.ToString(CultureInfo.InvariantCulture);
 416                 }
 417
 418                 public static string ToString(bool value)
 419                 {
 420                         if (value) return "true";
 421                         return "false";
 422                 }
 423
 424                 [CLSCompliant (false)]
 425                 public static string ToString(SByte value)
 426                 {
 427                         return value.ToString(CultureInfo.InvariantCulture);
 428                 }
 429
 430                 public static string ToString(Decimal value)
 431                 {
 432                         return value.ToString (CultureInfo.InvariantCulture);
 433                 }
 434
 435                 [CLSCompliant (false)]
 436                 public static string ToString(UInt64 value)
 437                 {
 438                         return value.ToString(CultureInfo.InvariantCulture);
 439                 }
 440
 441                 public static string ToString (TimeSpan value)
 442                 {
 443                         if (value == TimeSpan.Zero)
 444                                 return "PT0S";
 445
 446                         StringBuilder builder = new StringBuilder ();
 447                         if (value.Ticks < 0) {
 448                                 builder.Append ('-');
 449                                 value = value.Negate ();
 450                         }
 451                         builder.Append ('P');
 452                         if (value.Days > 0)
 453                                 builder.Append (value.Days).Append ('D');
 454                         if (value.Days > 0 || value.Hours > 0 || value.Minutes > 0 || value.Seconds > 0 || value.Milliseconds > 0) {
 455                                 builder.Append('T');
 456                                 if (value.Hours > 0)
 457                                         builder.Append (value.Hours).Append ('H');
 458                                 if (value.Minutes > 0)
 459                                         builder.Append (value.Minutes).Append ('M');
 460                                 if (value.Seconds > 0 || value.Milliseconds > 0) {
 461                                         builder.Append (value.Seconds);
 462                                         long ticks = value.Ticks % TimeSpan.TicksPerMillisecond;
 463                                         if (ticks > 0)
 464                                                 builder.Append ('.').AppendFormat ("{0:0000000}", value.Ticks % TimeSpan.TicksPerSecond);
 465                                         else if (value.Milliseconds > 0)
 466                                                 builder.Append ('.').AppendFormat ("{0:000}", value.Milliseconds);
 467
 468                                         builder.Append ('S');
 469                                 }
 470                         }
 471                         return builder.ToString ();
 472                 }
 473
 474                 public static string ToString(double value)
 475                 {
 476                         if (Double.IsNegativeInfinity(value)) return "-INF";
 477                         if (Double.IsPositiveInfinity(value)) return "INF";
 478                         if (Double.IsNaN(value)) return "NaN";
 479                         return value.ToString(CultureInfo.InvariantCulture);
 480                 }
 481
 482                 public static string ToString(float value)
 483                 {
 484                         if (Single.IsNegativeInfinity(value)) return "-INF";
 485                         if (Single.IsPositiveInfinity(value)) return "INF";
 486                         if (Single.IsNaN(value)) return "NaN";
 487                         return value.ToString(CultureInfo.InvariantCulture);
 488                 }
 489
 490                 [CLSCompliant (false)]
 491                 public static string ToString(UInt32 value)
 492                 {
 493                         return value.ToString(CultureInfo.InvariantCulture);
 494                 }
 495
 496                 [CLSCompliant (false)]
 497                 public static string ToString(UInt16 value)
 498                 {
 499                         return value.ToString(CultureInfo.InvariantCulture);
 500                 }
 501
 502 #if NET_2_0
 503                 [Obsolete]
 504 #endif
 505                 public static string ToString (DateTime value)
 506                 {
 507                         return value.ToString ("yyyy-MM-ddTHH:mm:ss.fffffffzzz", CultureInfo.InvariantCulture);
 508                 }
 509
 510 #if NET_2_0
 511                 public static string ToString (DateTime value, XmlDateTimeSerializationMode mode)
 512                 {
 513                         // Unlike usual DateTime formatting, it preserves
 514                         // MaxValue/MinValue as is.
 515                         string modestr = null;
 516                         switch (mode) {
 517                         case XmlDateTimeSerializationMode.Local:
 518                                 return (value == DateTime.MinValue ? DateTime.MinValue : value == DateTime.MaxValue ? value : value.ToLocalTime ()).ToString (
 519                                         "yyyy-MM-ddTHH:mm:ss.FFFFFFFzzz",
 520                                         CultureInfo.InvariantCulture);
 521                                 break;
 522                         case XmlDateTimeSerializationMode.RoundtripKind:
 523                                 return value.ToString (
 524                                         "yyyy-MM-ddTHH:mm:ss.FFFFFFFK",
 525                                         CultureInfo.InvariantCulture);
 526                                 break;
 527                         default:
 528                                 return value.ToString (
 529                                         "yyyy-MM-ddTHH:mm:ss.FFFFFFFzzz",
 530                                         CultureInfo.InvariantCulture);
 531                                 break;
 532                         case XmlDateTimeSerializationMode.Utc:
 533                                 return (value == DateTime.MinValue ? DateTime.MinValue : value == DateTime.MaxValue ? value : value.ToUniversalTime ()).ToString (
 534                                         "yyyy-MM-ddTHH:mm:ss.FFFFFFFZ",
 535                                         CultureInfo.InvariantCulture);
 536                                 break;
 537                         case XmlDateTimeSerializationMode.Unspecified:
 538                                 return value.ToString (
 539                                         "yyyy-MM-ddTHH:mm:ss.FFFFFFF",
 540                                         CultureInfo.InvariantCulture);
 541                                 break;
 542                         }
 543                 }
 544 #endif
 545
 546                 public static string ToString(DateTime value, string format)
 547                 {
 548                         return value.ToString(format, CultureInfo.InvariantCulture);
 549                 }
 550
 551                 public static TimeSpan ToTimeSpan(string s)
 552                 {
 553                         if (s.Length == 0)
 554                                 throw new ArgumentException ("Invalid format string for duration schema datatype.");
 555
 556                         int start = 0;
 557                         if (s [0] == '-')
 558                                 start = 1;
 559                         bool minusValue = (start == 1);
 560
 561                         if (s [start] != 'P')
 562                                 throw new ArgumentException ("Invalid format string for duration schema datatype.");
 563                         start++;
 564
 565                         int parseStep = 0;
 566                         int days = 0;
 567                         bool isTime = false;
 568                         int hours = 0;
 569                         int minutes = 0;
 570                         int seconds = 0;
 571                         long ticks = 0;
 572                         int parsedDigits = 0;
 573
 574                         bool error = false;
 575
 576                         int i = start;
 577                         while (i < s.Length) {
 578                                 if (s [i] == 'T') {
 579                                         isTime = true;
 580                                         parseStep = 4;
 581                                         i++;
 582                                         start = i;
 583                                         continue;
 584                                 }
 585                                 for (; i < s.Length; i++)
 586                                         if (s [i] < '0' || '9' < s [i])
 587                                                 break;
 588                                 if (parseStep == 7)
 589                                         parsedDigits = i - start;
 590                                 int value = int.Parse (s.Substring (start, i - start), CultureInfo.InvariantCulture);
 591                                 if (parseStep == 7) {
 592                                         // adjust to 7 digits so that it makes sense as millisecond digits
 593                                         for (; parsedDigits > 7; parsedDigits--)
 594                                                 value /= 10;
 595                                         for (; parsedDigits < 7; parsedDigits++)
 596                                                 value *= 10;
 597                                 }
 598                                 switch (s [i]) {
 599                                 case 'Y':
 600                                         days += value * 365;
 601                                         if (parseStep > 0)
 602                                                 error = true;
 603                                         else
 604                                                 parseStep = 1;
 605                                         break;
 606                                 case 'M':
 607                                         if (parseStep < 2) {
 608                                                 days += 365 * (value / 12) + 30 * (value % 12);
 609                                                 parseStep = 2;
 610                                         } else if (isTime && parseStep < 6) {
 611                                                 minutes = value;
 612                                                 parseStep = 6;
 613                                         }
 614                                         else
 615                                                 error = true;
 616                                         break;
 617                                 case 'D':
 618                                         days += value;
 619                                         if (parseStep > 2)
 620                                                 error = true;
 621                                         else
 622                                                 parseStep = 3;
 623                                         break;
 624                                 case 'H':
 625                                         hours = value;
 626                                         if (!isTime || parseStep > 4)
 627                                                 error = true;
 628                                         else
 629                                                 parseStep = 5;
 630                                         break;
 631                                 case 'S':
 632                                         if (parseStep == 7)
 633                                                 ticks = value;
 634                                         else
 635                                                 seconds = value;
 636                                         if (!isTime || parseStep > 7)
 637                                                 error = true;
 638                                         else
 639                                                 parseStep = 8;
 640                                         break;
 641                                 case '.':
 642                                         if (parseStep > 7)
 643                                                 error = true;
 644                                         seconds = value;
 645                                         parseStep = 7;
 646                                         break;
 647                                 default:
 648                                         error = true;
 649                                         break;
 650                                 }
 651                                 if (error)
 652                                         break;
 653                                 ++i;
 654                                 start = i;
 655                         }
 656                         if (error)
 657                                 throw new ArgumentException ("Invalid format string for duration schema datatype.");
 658                         TimeSpan ts = new TimeSpan (days, hours, minutes, seconds);
 659                         if (minusValue)
 660                                 return TimeSpan.FromTicks (- (ts.Ticks + ticks));
 661                         else
 662                                 return TimeSpan.FromTicks (ts.Ticks + ticks);
 663                 }
 664
 665                 [CLSCompliant (false)]
 666                 public static UInt16 ToUInt16(string s)
 667                 {
 668                         return UInt16.Parse(s, CultureInfo.InvariantCulture);
 669                 }
 670
 671                 [CLSCompliant (false)]
 672                 public static UInt32 ToUInt32(string s)
 673                 {
 674                         return UInt32.Parse(s, CultureInfo.InvariantCulture);
 675                 }
 676
 677                 [CLSCompliant (false)]
 678                 public static UInt64 ToUInt64(string s)
 679                 {
 680                         return UInt64.Parse(s, CultureInfo.InvariantCulture);
 681                 }
 682
 683                 public static string VerifyName (string name)
 684                 {
 685                         if (name == null || name.Length == 0)
 686                                 throw new ArgumentNullException("name");
 687
 688                         if (!XmlChar.IsName (name))
 689                                 throw new XmlException("'" + name + "' is not a valid XML Name");
 690                         return name;
 691
 692                 }
 693
 694                 public static string VerifyNCName (string ncname)
 695                 {
 696                         if (ncname == null || ncname.Length == 0)
 697                                 throw new ArgumentNullException("ncname");
 698
 699                         if (!XmlChar.IsNCName (ncname))
 700                                 throw new XmlException ("'" + ncname + "' is not a valid XML NCName");
 701                         return ncname;
 702                 }
 703
 704 #if NET_2_0
 705                 public static string VerifyTOKEN (string name)
 706 #else
 707                 internal static string VerifyTOKEN (string name)
 708 #endif
 709                 {
 710                         if (name == null)
 711                                 throw new ArgumentNullException("name");
 712
 713                         if (name.Length == 0)
 714                                 return name;
 715
 716                         if (XmlChar.IsWhitespace (name [0]) ||
 717                                 XmlChar.IsWhitespace (name [name.Length - 1]))
 718                                 throw new XmlException ("Whitespace characters (#xA, #xD, #x9, #x20) are not allowed as leading or trailing whitespaces of xs:token.");
 719
 720                         for (int i = 0; i < name.Length; i++)
 721                                 if (XmlChar.IsWhitespace (name [i]) && name [i] != ' ')
 722                                 throw new XmlException ("Either #xA, #xD or #x9 are not allowed inside xs:token.");
 723
 724                         return name;
 725                 }
 726
 727 #if NET_2_0
 728                 public static string VerifyNMTOKEN (string name)
 729 #else
 730                 internal static string VerifyNMTOKEN (string name)
 731 #endif
 732                 {
 733                         if (name == null)
 734                                 throw new ArgumentNullException("name");
 735
 736                         if (!XmlChar.IsNmToken (name))
 737                                 throw new XmlException("'" + name + "' is not a valid XML NMTOKEN");
 738                         return name;
 739
 740                 }
 741
 742                 // It is documented as public method, but in fact it is not.
 743                 internal static byte [] FromBinHexString (string s)
 744                 {
 745                         char [] chars = s.ToCharArray ();
 746                         byte [] bytes = new byte [chars.Length / 2 + chars.Length % 2];
 747                         FromBinHexString (chars, 0, chars.Length, bytes);
 748                         return bytes;
 749                 }
 750
 751                 internal static int FromBinHexString (char [] chars, int offset, int charLength, byte [] buffer)
 752                 {
 753                         int bufIndex = offset;
 754                         for (int i = 0; i < charLength - 1; i += 2) {
 755                                 buffer [bufIndex] = (chars [i] > '9' ?
 756                                                 (byte) (chars [i] - 'A' + 10) :
 757                                                 (byte) (chars [i] - '0'));
 758                                 buffer [bufIndex] <<= 4;
 759                                 buffer [bufIndex] += chars [i + 1] > '9' ?
 760                                                 (byte) (chars [i + 1] - 'A' + 10) :
 761                                                 (byte) (chars [i + 1] - '0');
 762                                 bufIndex++;
 763                         }
 764                         if (charLength %2 != 0)
 765                                 buffer [bufIndex++] = (byte)
 766                                         ((chars [charLength - 1] > '9' ?
 767                                                 (byte) (chars [charLength - 1] - 'A' + 10) :
 768                                                 (byte) (chars [charLength - 1] - '0'))
 769                                         << 4);
 770
 771                         return bufIndex - offset;
 772                 }
 773         }
 774 }