Package org.htmlunit.util

Class StringUtils

  • public final class StringUtils
extends java.lang.Object
    String utilities class for utility functions not covered by third party libraries.

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static org.htmlunit.html.impl.Color asColorHexadecimal​(java.lang.String token)
      Returns a Color parsed from the given RGB in hexadecimal notation.
      static java.lang.String cssCamelize​(java.lang.String string)
      Transforms the specified string from delimiter-separated (e.g.
      static java.lang.String cssDeCamelize​(java.lang.String string)
      Transforms the specified string from camel-cased (e.g.
      static java.lang.String escapeXmlAttributeValue​(java.lang.String attValue)
      Escape the string to be used as attribute value.
      static java.lang.String escapeXmlChars​(java.lang.String s)
      Escapes the characters '<', '>' and '&' into their XML entity equivalents.
      static org.htmlunit.html.impl.Color findColorHSL​(java.lang.String token)
      Returns a Color parsed from the given hsl notation if found inside the given string.
      static org.htmlunit.html.impl.Color findColorRGB​(java.lang.String token)
      Returns a Color parsed from the given rgb notation if found inside the given string.
      static org.htmlunit.html.impl.Color findColorRGBA​(java.lang.String token)
      Returns a Color parsed from the given rgb notation.
      static java.lang.String formatColor​(org.htmlunit.html.impl.Color color)
      Formats the specified color.
      static int indexOf​(java.lang.String s, char searchChar, int beginIndex, int endIndex)
      Returns the index within the specified string of the first occurrence of the specified search character.
      static java.util.Date parseHttpDate​(java.lang.String s)
      Parses the specified date string, assuming that it is formatted according to RFC 1123, RFC 1036 or as an ANSI C HTTP date header.
      static java.lang.String sanitizeForAppendReplacement​(java.lang.String toSanitize)
      Sanitize a string for use in Matcher.appendReplacement.
      static java.lang.String sanitizeForFileName​(java.lang.String toSanitize)
      Sanitizes a string for use as filename.
      static byte[] toByteArray​(java.lang.String content, java.nio.charset.Charset charset)
      Converts a string into a byte array using the specified encoding.
      static java.lang.String toRootLowerCaseWithCache​(java.lang.String string)  

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Method Detail

      • escapeXmlChars

        public static java.lang.String escapeXmlChars​(java.lang.String s)
        Escapes the characters '<', '>' and '&' into their XML entity equivalents. Note that sometimes we have to use this method instead of StringEscapeUtils.escapeXml(String) or StringEscapeUtils.escapeHtml4(String) because those methods escape some unicode characters as well.
        Parameters:
        s - the string to escape
        Returns:
        the escaped form of the specified string

      • escapeXmlAttributeValue

        public static java.lang.String escapeXmlAttributeValue​(java.lang.String attValue)
        Escape the string to be used as attribute value. Only <, & and " have to be escaped (see http://www.w3.org/TR/REC-xml/#d0e888).
        Parameters:
        attValue - the attribute value
        Returns:
        the escaped value

      • indexOf

        public static int indexOf​(java.lang.String s,
                          char searchChar,
                          int beginIndex,
                          int endIndex)
        Returns the index within the specified string of the first occurrence of the specified search character.
        Parameters:
        s - the string to search
        searchChar - the character to search for
        beginIndex - the index at which to start the search
        endIndex - the index at which to stop the search
        Returns:
        the index of the first occurrence of the character in the string or -1

      • parseHttpDate

        public static java.util.Date parseHttpDate​(java.lang.String s)
        Parses the specified date string, assuming that it is formatted according to RFC 1123, RFC 1036 or as an ANSI C HTTP date header. This method returns null if the specified string is null or unparseable.
        Parameters:
        s - the string to parse as a date
        Returns:
        the date version of the specified string, or null

      • asColorHexadecimal

        public static org.htmlunit.html.impl.Color asColorHexadecimal​(java.lang.String token)
        Returns a Color parsed from the given RGB in hexadecimal notation.
        Parameters:
        token - the token to parse
        Returns:
        a Color whether the token is a color RGB in hexadecimal notation; otherwise null

      • findColorRGB

        public static org.htmlunit.html.impl.Color findColorRGB​(java.lang.String token)
        Returns a Color parsed from the given rgb notation if found inside the given string.
        Parameters:
        token - the token to parse
        Returns:
        a Color whether the token contains a color in RGB notation; otherwise null

      • findColorRGBA

        public static org.htmlunit.html.impl.Color findColorRGBA​(java.lang.String token)
        Returns a Color parsed from the given rgb notation.
        Parameters:
        token - the token to parse
        Returns:
        a Color whether the token is a color in RGB notation; otherwise null

      • findColorHSL

        public static org.htmlunit.html.impl.Color findColorHSL​(java.lang.String token)
        Returns a Color parsed from the given hsl notation if found inside the given string.
        Parameters:
        token - the token to parse
        Returns:
        a Color whether the token contains a color in RGB notation; otherwise null

      • formatColor

        public static java.lang.String formatColor​(org.htmlunit.html.impl.Color color)
        Formats the specified color.
        Parameters:
        color - the color to format
        Returns:
        the specified color, formatted

      • sanitizeForAppendReplacement

        public static java.lang.String sanitizeForAppendReplacement​(java.lang.String toSanitize)
        Sanitize a string for use in Matcher.appendReplacement. Replaces all \ with \\ and $ as \$ because they are used as control characters in appendReplacement.
        Parameters:
        toSanitize - the string to sanitize
        Returns:
        sanitized version of the given string

      • sanitizeForFileName

        public static java.lang.String sanitizeForFileName​(java.lang.String toSanitize)
        Sanitizes a string for use as filename. Replaces \, /, |, :, ?, *, ", <, >, control chars by _ (underscore).
        Parameters:
        toSanitize - the string to sanitize
        Returns:
        sanitized version of the given string

      • cssCamelize

        public static java.lang.String cssCamelize​(java.lang.String string)
        Transforms the specified string from delimiter-separated (e.g. font-size) to camel-cased (e.g. fontSize).
        Parameters:
        string - the string to camelize
        Returns:
        the transformed string

      • toRootLowerCaseWithCache

        public static java.lang.String toRootLowerCaseWithCache​(java.lang.String string)

      • cssDeCamelize

        public static java.lang.String cssDeCamelize​(java.lang.String string)
        Transforms the specified string from camel-cased (e.g. fontSize) to delimiter-separated (e.g. font-size). to camel-cased .
        Parameters:
        string - the string to decamelize
        Returns:
        the transformed string

      • toByteArray

        public static byte[] toByteArray​(java.lang.String content,
                                 java.nio.charset.Charset charset)
        Converts a string into a byte array using the specified encoding.
        Parameters:
        charset - the charset
        content - the string to convert
        Returns:
        the String as a byte[]; if the specified encoding is not supported an empty byte[] will be returned