/* * boolean isLabelSeparator(int ch){ * int result = getCodePointValue(ch); * if( (result & 0x07) == LABEL_SEPARATOR){ * return true; * } * return false; * } */ /* * 1) Map -- For each character in the input, check if it has a mapping * and, if so, replace it with its mapping. * * 2) Normalize -- Possibly normalize the result of step 1 using Unicode * normalization. * * 3) Prohibit -- Check for any characters that are not allowed in the * output. If any are found, return an error. * * 4) Check bidi -- Possibly check for right-to-left characters, and if * any are found, make sure that the whole string satisfies the * requirements for bidirectional strings. If the string does not * satisfy the requirements for bidirectional strings, return an * error. * [Unicode3.2] defines several bidirectional categories; each character * has one bidirectional category assigned to it. For the purposes of * the requirements below, an "RandALCat character" is a character that * has Unicode bidirectional categories "R" or "AL"; an "LCat character" * is a character that has Unicode bidirectional category "L". Note * * * that there are many characters which fall in neither of the above * definitions; Latin digits (<U+0030> through <U+0039>) are examples of * this because they have bidirectional category "EN". * * In any profile that specifies bidirectional character handling, all * three of the following requirements MUST be met: * * 1) The characters in section 5.8 MUST be prohibited. * * 2) If a string contains any RandALCat character, the string MUST NOT * contain any LCat character. * * 3) If a string contains any RandALCat character, a RandALCat * character MUST be the first character of the string, and a * RandALCat character MUST be the last character of the string. */ /// <summary> /// Prepare the input buffer for use in applications with the given profile. This operation maps, normalizes(NFKC), /// checks for prohibited and BiDi characters in the order defined by RFC 3454 /// depending on the options specified in the profile. /// </summary> /// <param name="src">A <see cref="UCharacterIterator"/> object containing the source string.</param> /// <param name="options">A bit set of options: /// <list type="bullet"> /// <item><term><see cref="StringPrepOptions.Default"/></term><description>Prohibit processing of unassigned code points in the input.</description></item> /// <item><term><see cref="StringPrepOptions.AllowUnassigned"/></term><description>Treat the unassigned code points are in the input as normal Unicode code points.</description></item> /// </list> /// </param> /// <returns>A <see cref="StringBuffer"/> containing the output.</returns> /// <exception cref="StringPrepParseException">An exception occurs when parsing a string is invalid.</exception> /// <stable>ICU 2.8</stable> public StringBuffer Prepare(UCharacterIterator src, StringPrepOptions options) { // map StringBuffer mapOut = Map(src, options); StringBuffer normOut = mapOut;// initialize if (doNFKC) { // normalize normOut = Normalize(mapOut); } int ch; char result; UCharacterIterator iter = UCharacterIterator.GetInstance(normOut); Values val = new Values(); #pragma warning disable 612, 618 UCharacterDirection direction = UCharacterDirection.CharDirectionCount, firstCharDir = UCharacterDirection.CharDirectionCount; #pragma warning restore 612, 618 int rtlPos = -1, ltrPos = -1; bool rightToLeft = false, leftToRight = false; while ((ch = iter.NextCodePoint()) != UCharacterIterator.DONE) { result = GetCodePointValue(ch); GetValues(result, val); if (val.type == PROHIBITED) { throw new StringPrepParseException("A prohibited code point was found in the input", StringPrepErrorType.ProhibitedError, iter.GetText(), val.value); } if (checkBiDi) { direction = (UCharacterDirection)bdp.GetClass(ch); #pragma warning disable 612, 618 if (firstCharDir == UCharacterDirection.CharDirectionCount) #pragma warning restore 612, 618 { firstCharDir = direction; } if (direction == UCharacterDirection.LeftToRight) { leftToRight = true; ltrPos = iter.Index - 1; } if (direction == UCharacterDirection.RightToLeft || direction == UCharacterDirection.RightToLeftArabic) { rightToLeft = true; rtlPos = iter.Index - 1; } } } if (checkBiDi == true) { // satisfy 2 if (leftToRight == true && rightToLeft == true) { throw new StringPrepParseException("The input does not conform to the rules for BiDi code points.", StringPrepErrorType.CheckBiDiError, iter.GetText(), (rtlPos > ltrPos) ? rtlPos : ltrPos); } //satisfy 3 if (rightToLeft == true && !((firstCharDir == UCharacterDirection.RightToLeft || firstCharDir == UCharacterDirection.RightToLeftArabic) && (direction == UCharacterDirection.RightToLeft || direction == UCharacterDirection.RightToLeftArabic)) ) { throw new StringPrepParseException("The input does not conform to the rules for BiDi code points.", StringPrepErrorType.CheckBiDiError, iter.GetText(), (rtlPos > ltrPos) ? rtlPos : ltrPos); } } return(normOut); }
/* * boolean isLabelSeparator(int ch){ int result = getCodePointValue(ch); if( * (result & 0x07) == LABEL_SEPARATOR){ return true; } return false; } */ /* * 1) Map -- For each character in the input, check if it has a mapping and, * if so, replace it with its mapping. * * 2) Normalize -- Possibly normalize the result of step 1 using Unicode * normalization. * * 3) Prohibit -- Check for any characters that are not allowed in the * output. If any are found, return an error. * * 4) Check bidi -- Possibly check for right-to-left characters, and if any * are found, make sure that the whole string satisfies the requirements for * bidirectional strings. If the string does not satisfy the requirements * for bidirectional strings, return an error. [Unicode3.2] defines several * bidirectional categories; each character has one bidirectional category * assigned to it. For the purposes of the requirements below, an * "RandALCat character" is a character that has Unicode bidirectional * categories "R" or "AL"; an "LCat character" is a character that has * Unicode bidirectional category "L". Note * * * that there are many characters which fall in neither of the above * definitions; Latin digits (<U+0030> through <U+0039>) are examples of * this because they have bidirectional category "EN". * * In any profile that specifies bidirectional character handling, all three * of the following requirements MUST be met: * * 1) The characters in section 5.8 MUST be prohibited. * * 2) If a string contains any RandALCat character, the string MUST NOT * contain any LCat character. * * 3) If a string contains any RandALCat character, a RandALCat character * MUST be the first character of the string, and a RandALCat character MUST * be the last character of the string. */ /// <summary> /// Prepare the input buffer for use in applications with the given profile. /// This operation maps, normalizes(NFKC), checks for prohited and BiDi /// characters in the order defined by RFC 3454 depending on the options /// specified in the profile. /// </summary> /// /// <param name="src">A UCharacterIterator object containing the source string</param> /// <param name="options">A bit set of options:- StringPrep.NONE Prohibit processing of unassigned codepoints in the input- StringPrep.ALLOW_UNASSIGNED Treat the unassigned code pointsare in the input as normal Unicode code points.</param> /// <returns>StringBuffer A StringBuffer containing the output</returns> /// <exception cref="ParseException"></exception> /// @stable ICU 2.8 public StringBuilder Prepare(UCharacterIterator src, int options) { // map StringBuilder mapOut = Map(src, options); StringBuilder normOut = mapOut; // initialize if (doNFKC) { // normalize normOut = Normalize(mapOut); } int ch; char result; UCharacterIterator iter = IBM.ICU.Text.UCharacterIterator.GetInstance(normOut); StringPrep.Values val = new StringPrep.Values(); int direction = IBM.ICU.Lang.UCharacterEnums.ECharacterDirection.CHAR_DIRECTION_COUNT, firstCharDir = IBM.ICU.Lang.UCharacterEnums.ECharacterDirection.CHAR_DIRECTION_COUNT; int rtlPos = -1, ltrPos = -1; bool rightToLeft = false, leftToRight = false; while ((ch = iter.NextCodePoint()) != IBM.ICU.Text.UForwardCharacterIterator_Constants.DONE) { result = GetCodePointValue(ch); GetValues(result, val); if (val.type == PROHIBITED) { throw new StringPrepParseException( "A prohibited code point was found in the input", IBM.ICU.Text.StringPrepParseException.PROHIBITED_ERROR, iter.GetText(), val.value_ren); } if (checkBiDi) { direction = bdp.GetClass(ch); if (firstCharDir == IBM.ICU.Lang.UCharacterEnums.ECharacterDirection.CHAR_DIRECTION_COUNT) { firstCharDir = direction; } if (direction == IBM.ICU.Lang.UCharacterEnums.ECharacterDirection.LEFT_TO_RIGHT) { leftToRight = true; ltrPos = iter.GetIndex() - 1; } if (direction == IBM.ICU.Lang.UCharacterEnums.ECharacterDirection.RIGHT_TO_LEFT || direction == IBM.ICU.Lang.UCharacterEnums.ECharacterDirection.RIGHT_TO_LEFT_ARABIC) { rightToLeft = true; rtlPos = iter.GetIndex() - 1; } } } if (checkBiDi == true) { // satisfy 2 if (leftToRight == true && rightToLeft == true) { throw new StringPrepParseException( "The input does not conform to the rules for BiDi code points.", IBM.ICU.Text.StringPrepParseException.CHECK_BIDI_ERROR, iter .GetText(), (rtlPos > ltrPos) ? rtlPos : ltrPos); } // satisfy 3 if (rightToLeft == true && !((firstCharDir == IBM.ICU.Lang.UCharacterEnums.ECharacterDirection.RIGHT_TO_LEFT || firstCharDir == IBM.ICU.Lang.UCharacterEnums.ECharacterDirection.RIGHT_TO_LEFT_ARABIC) && (direction == IBM.ICU.Lang.UCharacterEnums.ECharacterDirection.RIGHT_TO_LEFT || direction == IBM.ICU.Lang.UCharacterEnums.ECharacterDirection.RIGHT_TO_LEFT_ARABIC))) { throw new StringPrepParseException( "The input does not conform to the rules for BiDi code points.", IBM.ICU.Text.StringPrepParseException.CHECK_BIDI_ERROR, iter .GetText(), (rtlPos > ltrPos) ? rtlPos : ltrPos); } } return(normOut); }