Package edu.isi.pegasus.common.util
Class Escape
- java.lang.Object
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- edu.isi.pegasus.common.util.Escape
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public class Escape extends java.lang.Object
This class tries to define an interface to deal with quoting, escaping, and the way back. The quoting algorithm is safe to only itself. Thus,unescape( escape( s ) ) === s
holds true, butescape( unescape( s ) ) =?= s
does not necessarily hold.- Version:
- $Revision$
- Author:
- Gaurang Mehta, Karan Vahi, Jens-S. Vöckler
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Field Summary
Fields Modifier and Type Field Description private java.lang.String
m_escapable
Defines the set of characters that require escaping.private char
m_escape
Defines the character used to escape characters.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description java.lang.String
escape(java.lang.String s)
Transforms a given string by escaping all characters inside the quotable characters set with the escape character.static void
main(java.lang.String[] args)
Test program.java.lang.String
unescape(java.lang.String s)
Transforms a given string by unescaping all characters that are prefixed with the escape character.
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Constructor Detail
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Escape
public Escape()
Defines the default quoting and escaping rules, escaping the apostrophe, double quote and backslash. The escape character is the backslash.
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Escape
public Escape(java.lang.String escapable, char escape)
Constructs arbitrary escaping rules.- Parameters:
escapable
- is the set of characters that require escapingescape
- is the escape character itself.
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Method Detail
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escape
public java.lang.String escape(java.lang.String s)
Transforms a given string by escaping all characters inside the quotable characters set with the escape character. The escape character itself is also escaped.- Parameters:
s
- is the string to escape.- Returns:
- the quoted string
- See Also:
unescape( String )
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unescape
public java.lang.String unescape(java.lang.String s)
Transforms a given string by unescaping all characters that are prefixed with the escape character.- Parameters:
s
- is the string to remove escapes from.- Returns:
- the quoted string
- See Also:
unescape( String )
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main
public static void main(java.lang.String[] args)
Test program.- Parameters:
args
- are command-line arguments
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