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Class grendel.storage.NewsRC
java.lang.Object | +----grendel.storage.NewsRC
This class represents a newsrc-format disk file, and the newsgroup descriptions within it.
public class NewsRC
extends java.lang.Object
{
// Fields 8
static final boolean DEBUG;
protected boolean dirty;
protected File file;
protected long file_date;
protected long file_size;
protected Vector lines;
protected ByteBuf options_lines;
Thread updateThread;
// Constructors 1
NewsRC(File) throws IOException;
// Methods 13
public Enumeration elements();
public File file();
public NewsRCLine getNewsgroup(String);
private synchronized void load() throws IOException;
public static void main(String[]);
protected NewsRCLine makeNewsRCLine(ByteBuf);
public synchronized void markDirty();
protected void parse_file(FileInputStream) throws IOException;
public void save() throws IOException;
protected void save_internal() throws IOException;
protected File tempFileName();
protected synchronized void verifyFileDate(boolean);
public void write(OutputStream) throws IOException;
}
Fields
• DEBUG
static final boolean DEBUG
• file
protected File file
• file_date
protected long file_date
• file_size
protected long file_size
• options_lines
protected ByteBuf options_lines
• lines
protected Vector lines
• dirty
protected boolean dirty
• updateThread
Thread updateThread
Constructors
• NewsRC
NewsRC(File file) throws IOException
Reads and parses the file, and returns a NewsRC object describing it. If the file doesn't exist, the newsrc object will be empty.
Methods
• load
private synchronized void load() throws IOException
• file
public File file()
Returns the file associated with this newsrc object. Note that the file may not actually exist on disk yet.
• parse_file
protected void parse_file(FileInputStream in) throws IOException
• markDirty
public synchronized void markDirty()
Call this to indicate that the file needs to be flushed to disk.
• makeNewsRCLine
protected NewsRCLine makeNewsRCLine(ByteBuf line_buf)
Parses the given line and creates a NewsRCLine object representing it. Returns null if the line is unparsable.
• elements
public Enumeration elements()
• getNewsgroup
public NewsRCLine getNewsgroup(String group_name)
Returns a NewsRCLine describing the named newsgroup. If there isn't one, creates one.
• write
public void write(OutputStream stream) throws IOException
• tempFileName
protected File tempFileName()
Returns the name of a non-existent file that can be used as a temporary file while writing this newsrc. This name is OS-dependent.
On all systems, the summary file resides in the same directory as the folder file, and has the same "base" name.
On Unix, the summary file for .newsrc-HOSTNAME would be .newsrc-HOSTNAME.ns_tmp.
On Windows and Mac, the summary file for news-HOSTNAME.rc would be news-HOSTNAME.TMP.
• save
public void save() throws IOException
Writes the file associated with this NewsRC object, if there have been any changes to it.
• save_internal
protected void save_internal() throws IOException
• verifyFileDate
protected synchronized void verifyFileDate(boolean was_dirty)
Compare the current date/size of the disk file with the date/size at the time we read it, and if the disk version has changed, do something sensible.
• main
public static void main(String[] argv)
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