C# Класс iTextSharp.xmp.impl.Utils

Serializes the node value in XML encoding. Its used for tag bodies and attributes.
Note: The attribute is always limited by quotes, thats why ' is never serialized.
Note: Control chars are written unescaped, but if the user uses others than tab, LF and CR the resulting XML will become invalid.

Simple check for valid XMLNames. Within ASCII range
":" | [A-Z] | "_" | [a-z] | [#xC0-#xD6] | [#xD8-#xF6]
are accepted, above all characters (which is not entirely correct according to the XML Spec.

Checks if the value is a legal "unqualified" XML name, as defined in the XML Namespaces proposed recommendation. These are XML names, except that they must not contain a colon.

Normalize an xml:lang value so that comparisons are effectively case insensitive as required by RFC 3066 (which superceeds RFC 1766). The normalization rules:

• The primary subtag is lower case, the suggested practice of ISO 639.
• All 2 letter secondary subtags are upper case, the suggested practice of ISO 3166.
• All other subtags are lower case.

Check some requirements for an UUID:

• Length of the UUID is 32
• The Delimiter count is 4 and all the 4 delimiter are on their right position (8,13,18,23)

Initializes the char tables for the chars 0x00-0xFF for later use, according to the XML 1.1 specification http://www.w3.org/TR/xml11

Simple check if a character is a valid XML name char (every char except the first one), according to the XML Spec 1.1: http://www.w3.org/TR/xml11/#NT-NameChar

Simple check if a character is a valid XML start name char. All characters according to the XML Spec 1.1 are accepted: http://www.w3.org/TR/xml11/#NT-NameStartChar

Replaces the ASCII control chars with a space.

Split the name and value parts for field and qualifier selectors:

• [qualName="value"] - An element in an array of structs, chosen by a field value.
• [?qualName="value"] - An element in an array, chosen by a qualifier value.

init char tables