Package sk.iway.iwcm.i18n

Class IwayProperties

java.lang.Object
java.util.Dictionary<K,V>
java.util.Hashtable<String,String>
sk.iway.iwcm.i18n.IwayProperties
All Implemented Interfaces:
Serializable, Cloneable, Map<String,String>
public class IwayProperties extends Hashtable<String,String>
The Properties class represents a persistent set of properties. The Properties can be saved to a stream or loaded from a stream. Each key and its corresponding value in the property list is a string.

A property list can contain another property list as its "defaults"; this second property list is searched if the property key is not found in the original property list.

Because Properties inherits from Hashtable, the put and putAll methods can be applied to a Properties object. Their use is strongly discouraged as they allow the caller to insert entries whose keys or values are not Strings. The setProperty method should be used instead. If the store or save method is called on a "compromised" Properties object that contains a non-String key or value, the call will fail.

When saving properties to a stream or loading them from a stream, the ISO 8859-1 character encoding is used. For characters that cannot be directly represented in this encoding, Unicode escapes are used; however, only a single 'u' character is allowed in an escape sequence. The native2ascii tool can be used to convert property files to and from other character encodings.

Since:
JDK1.0
See Also:

  • Field Details

    • defaults

      protected IwayProperties defaults
      A property list that contains default values for any keys not found in this property list.

  • Constructor Details

    • IwayProperties

      public IwayProperties()
      Creates an empty property list with no default values.

    • IwayProperties

      public IwayProperties(String encoding)

    • IwayProperties

      public IwayProperties(IwayProperties defaults)
      Creates an empty property list with the specified defaults.
      Parameters:
      defaults - the defaults.

  • Method Details

    • setProperty

      public Object setProperty(String key, String value)
      Calls the Hashtable method put. Provided for parallelism with the getProperty method. Enforces use of strings for property keys and values. The value returned is the result of the Hashtable call to put.
      Parameters:
      key - the key to be placed into this property list.
      value - the value corresponding to key .
      Returns:
      the previous value of the specified key in this property list, or null if it did not have one.
      Since:
      1.2
      See Also:

    • load

      public void load(IwcmFile f) throws IOException
      Reads a property list (key and element pairs) from the input stream. The stream is assumed to be using the ISO 8859-1 character encoding.

      Every property occupies one line of the input stream. Each line is terminated by a line terminator (\n or \r or \r\n). Lines from the input stream are processed until end of file is reached on the input stream.

      A line that contains only whitespace or whose first non-whitespace character is an ASCII # or ! is ignored (thus, # or ! indicate comment lines).

      Every line other than a blank line or a comment line describes one property to be added to the table (except that if a line ends with \, then the following line, if it exists, is treated as a continuation line, as described below). The key consists of all the characters in the line starting with the first non-whitespace character and up to, but not including, the first ASCII =, :, or whitespace character. All of the key termination characters may be included in the key by preceding them with a \. Any whitespace after the key is skipped; if the first non-whitespace character after the key is = or :, then it is ignored and any whitespace characters after it are also skipped. All remaining characters on the line become part of the associated element string. Within the element string, the ASCII escape sequences \t, \n, \r, \\ , \", \', \ (a backslash and a space), and \uxxxx are recognized and converted to single characters. Moreover, if the last character on the line is \, then the next line is treated as a continuation of the current line; the \ and line terminator are simply discarded, and any leading whitespace characters on the continuation line are also discarded and are not part of the element string.

      As an example, each of the following four lines specifies the key "Truth" and the associated element value "Beauty": 

       Truth = Beauty
        Truth:Beauty
 Truth                  :Beauty
      As another example, the following three lines specify a single property: 

       fruits                         apple, banana, pear, \
                                  cantaloupe, watermelon, \
                                  kiwi, mango
      The key is "fruits" and the associated element is: 

      "apple, banana, pear, cantaloupe, watermelon, kiwi, mango"
      Note that a space appears before each \ so that a space will appear after each comma in the final result; the \, line terminator, and leading whitespace on the continuation line are merely discarded and are not replaced by one or more other characters.

      As a third example, the line: 

      cheeses
      specifies that the key is "cheeses" and the associated element is the empty string.

      Throws:
      IOException - if an error occurred when reading from the input stream.

    • load

      public void load(net.sourceforge.stripes.action.FileBean propFile) throws IOException
      to iste ako load(java.io.File) akurat s net.sourceforge.stripes.action.FileBean
      Parameters:
      propFile -
      Throws:
      IOException

    • store

      public void store(OutputStream out, String header, String encoding) throws IOException
      Writes this property list (key and element pairs) in this Properties table to the output stream in a format suitable for loading into a Properties table using the load method. The stream is written using the character encoding entered as parameter.

      Properties from the defaults table of this Properties table (if any) are not written out by this method.

      If the header argument is not null, then an ASCII # character, the header string, and a line separator are first written to the output stream. Thus, the header can serve as an identifying comment.

      Next, a comment line is always written, consisting of an ASCII # character, the current date and time (as if produced by the toString method of Date for the current time), and a line separator as generated by the Writer.

      Then every entry in this Properties table is written out, one per line. For each entry the key string is written, then an ASCII =, then the associated element string. Each character of the element string is examined to see whether it should be rendered as an escape sequence. The ASCII characters \, tab, newline, and carriage return are written as \\, \t, \n , and \r, respectively. Characters less than \u0020 and characters greater than \u007E are written as \u xxxx for the appropriate hexadecimal value xxxx . Leading space characters, but not embedded or trailing space characters, are written with a preceding \. The key and value characters #, !, =, and : are written with a preceding slash to ensure that they are properly loaded.

      After the entries have been written, the output stream is flushed. The output stream remains open after this method returns.

      Parameters:
      out - an output stream.
      header - a description of the property list.
      encoding - encoding, supported are ISO-8859-1 and UTF-8
      Throws:
      IOException - if writing this property list to the specified output stream throws an IOException .
      UnsupportedEncodingException
      Since:
      1.2

    • storeUtf8

      public void storeUtf8(javax.servlet.jsp.JspWriter awriter, String header) throws IOException
      Doing same as stire with OutputStream parameter, but writes into JspWriter using UTF-8 encoding
      Parameters:
      awriter - jspwriter
      header - header of generated file, preceeded by hash mark
      Throws:
      IOException

    • getProperty

      public String getProperty(String key)
      Searches for the property with the specified key in this property list. If the key is not found in this property list, the default property list, and its defaults, recursively, are then checked. The method returns null if the property is not found.
      Parameters:
      key - the property key.
      Returns:
      the value in this property list with the specified key value.
      See Also:

    • getProperty

      public String getProperty(String key, String defaultValue)
      Searches for the property with the specified key in this property list. If the key is not found in this property list, the default property list, and its defaults, recursively, are then checked. The method returns the default value argument if the property is not found.
      Parameters:
      key - the hashtable key.
      defaultValue - a default value.
      Returns:
      the value in this property list with the specified key value.
      See Also:

    • propertyNames

      public Enumeration<String> propertyNames()
      Returns an enumeration of all the keys in this property list, including distinct keys in the default property list if a key of the same name has not already been found from the main properties list.
      Returns:
      an enumeration of all the keys in this property list, including the keys in the default property list.
      See Also:

    • list

      public void list(PrintStream out)
      Prints this property list out to the specified output stream. This method is useful for debugging.
      Parameters:
      out - an output stream.

    • list

      public void list(PrintWriter out)
      Prints this property list out to the specified output stream. This method is useful for debugging.
      Parameters:
      out - an output stream.
      Since:
      JDK1.1