Class StringParser
java.lang.Object
edu.internet2.middleware.grouperClientExt.org.apache.commons.jexl2.parser.StringParser
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JexlParser
Common constant strings utilities.
This package methods read JEXL string literals and handle escaping through the 'backslash' (ie: \) character. Escaping is used to neutralize string delimiters (the single and double quotes) and read Unicode hexadecimal encoded characters.
The only escapable characters are the single and double quotes - ''' and '"' -, a Unicode sequence starting with 'u' followed by 4 hexadecimals and the backslash character - '\' - itself.
A sequence where '\' occurs before any non-escapable character or sequence has no effect, the sequence output being the same as the input.
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Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptionstatic String
buildString
(CharSequence str, boolean eatsep) Builds a string, handles escaping through '\' syntax.static String
escapeString
(String str, char delim) Escapes a String representation, expand non-ASCII characters as Unicode escape sequence.static int
readString
(StringBuilder strb, CharSequence str, int index, char sep) Read the remainder of a string till a given separator, handles escaping through '\' syntax.
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Constructor Details
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StringParser
public StringParser()Default constructor.
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Method Details
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buildString
Builds a string, handles escaping through '\' syntax.- Parameters:
str
- the string to build fromeatsep
- whether the separator, the first character, should be considered- Returns:
- the built string
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readString
Read the remainder of a string till a given separator, handles escaping through '\' syntax.- Parameters:
strb
- the destination buffer to copy characters intostr
- the originindex
- the offset into the originsep
- the separator, single or double quote, marking end of string- Returns:
- the offset in origin
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escapeString
Escapes a String representation, expand non-ASCII characters as Unicode escape sequence.- Parameters:
str
- the string to escape- Returns:
- the escaped representation
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