logreader.html

用JAVA编写的,在做实验的时候留下来的,本来想删的,但是传上来,大家分享吧

                        included.<DD><CODE>logsize</CODE> - Size of the log in bytes
<DT><B>Returns:</B><DD>An array of two strings is returned. At index 0 all lines in a
         log/file matching a given regular expression is located.
         At index 1 there is an informational string about how large a
         segment of the file is being returned.
         Null is returned if errors occur (file not found or io exception)
         If a PatternSyntaxException occurs, it's error message will be
         returned and the informational string will be empty (not null).</DL>
</DD>
</DL>
<HR>

<A NAME="getByRegExpr(java.lang.String, java.lang.String, java.lang.String, boolean, int, int)"><!-- --></A><H3>
getByRegExpr</H3>
<PRE>
public static java.lang.String[] <B>getByRegExpr</B>(java.lang.String&nbsp;aFileName,
                                              java.lang.String&nbsp;regExpr,
                                              java.lang.String&nbsp;addLines,
                                              boolean&nbsp;prependLineNumbers,
                                              int&nbsp;skipFirstMatches,
                                              int&nbsp;numberOfMatches)</PRE>
<DL>
<DD>Returns all lines in a log/file matching a given regular expression.  
 Possible to get lines immediately following the matched line.  Also 
 possible to have each line prepended by it's line number.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>aFileName</CODE> - The filename of the log/file<DD><CODE>regExpr</CODE> - The regular expression that is to be used<DD><CODE>addLines</CODE> - Any lines following a match that <b>begin</b> with this 
                 string will also be included. We will stop including new 
                 lines once we hit the first that does not match.<DD><CODE>prependLineNumbers</CODE> - If true, then each line will be prepended by 
                           it's line number in the file.<DD><CODE>skipFirstMatches</CODE> - The first number of matches up to this value will
                         be skipped over.<DD><CODE>numberOfMatches</CODE> - Once past matches that are to be skipped this many
                        matches will be added to the return value. A
                        value of 0 will cause all matching lines to be
                        included.
<DT><B>Returns:</B><DD>An array of two strings is returned. At index 0 tall lines in a
         log/file matching a given regular expression is located.
         At index 1 there is an informational string about how large a
         segment of the file is being returned.
         Null is returned if errors occur (file not found or io exception)
         If a PatternSyntaxException occurs, it's error message will be
         returned and the informational string will be empty (not null).</DL>
</DD>
</DL>
<HR>

<A NAME="getByRegExprFromSeries(java.lang.String, java.lang.String, java.lang.String, boolean, int, int)"><!-- --></A><H3>
getByRegExprFromSeries</H3>
<PRE>
public static java.lang.String[] <B>getByRegExprFromSeries</B>(java.lang.String&nbsp;aFileName,
                                                        java.lang.String&nbsp;regExpr,
                                                        java.lang.String&nbsp;addLines,
                                                        boolean&nbsp;prependLineNumbers,
                                                        int&nbsp;skipFirstMatches,
                                                        int&nbsp;numberOfMatches)</PRE>
<DL>
<DD>Returns all lines in a log/file matching a given regular expression.  
 Possible to get lines immediately following the matched line.  Also 
 possible to have each line prepended by it's  line number.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>aFileName</CODE> - The filename of the log/file<DD><CODE>regExpr</CODE> - The regular expression that is to be used<DD><CODE>addLines</CODE> - Any lines following a match that <b>begin</b> with this 
                 string will also be included. We will stop including new 
                 lines once we hit the first that does not match.<DD><CODE>prependLineNumbers</CODE> - If true, then each line will be prepended by 
                           it's line number in the file.<DD><CODE>skipFirstMatches</CODE> - The first number of matches up to this value will
                         be skipped over.<DD><CODE>numberOfMatches</CODE> - Once past matches that are to be skipped this many
                        matches will be added to the return value. A
                        value of 0 will cause all matching lines to be
                        included.
<DT><B>Returns:</B><DD>An array of two strings is returned. At index 0 tall lines in a
         log/file matching a given regular expression is located.
         At index 1 there is an informational string about how large a
         segment of the file is being returned.
         Null is returned if errors occur (file not found or io exception)
         If a PatternSyntaxException occurs, it's error message will be
         returned and the informational string will be empty (not null).</DL>
</DD>
</DL>
<HR>

<A NAME="getByRegExpr(java.io.InputStreamReader, java.lang.String, java.lang.String, boolean, int, int, long)"><!-- --></A><H3>
getByRegExpr</H3>
<PRE>
public static java.lang.String[] <B>getByRegExpr</B>(java.io.InputStreamReader&nbsp;reader,
                                              java.lang.String&nbsp;regExpr,
                                              java.lang.String&nbsp;addLines,
                                              boolean&nbsp;prependLineNumbers,
                                              int&nbsp;skipFirstMatches,
                                              int&nbsp;numberOfMatches,
                                              long&nbsp;logsize)</PRE>
<DL>
<DD>Returns all lines in a log/file matching a given regular expression.  
 Possible to get lines immediately following the matched line.  Also 
 possible to have each line prepended by it's line number.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>reader</CODE> - The reader of the log/file<DD><CODE>regExpr</CODE> - The regular expression that is to be used<DD><CODE>addLines</CODE> - Any lines following a match that <b>begin</b> with this 
                 string will also be included. We will stop including new 
                 lines once we hit the first that does not match.<DD><CODE>prependLineNumbers</CODE> - If true, then each line will be prepended by 
                           it's line number in the file.<DD><CODE>skipFirstMatches</CODE> - The first number of matches up to this value will
                         be skipped over.<DD><CODE>numberOfMatches</CODE> - Once past matches that are to be skipped this many
                        matches will be added to the return value. A
                        value of 0 will cause all matching lines to be
                        included.<DD><CODE>logsize</CODE> - Size of the log in bytes
<DT><B>Returns:</B><DD>An array of two strings is returned. At index 0 tall lines in a
         log/file matching a given regular expression is located.
         At index 1 there is an informational string about how large a
         segment of the file is being returned.
         Null is returned if errors occur (file not found or io exception)
         If a PatternSyntaxException occurs, it's error message will be
         returned and the informational string will be empty (not null).</DL>
</DD>
</DL>
<HR>

<A NAME="tail(java.lang.String)"><!-- --></A><H3>
tail</H3>
<PRE>
public static java.lang.String[] <B>tail</B>(java.lang.String&nbsp;aFileName)</PRE>
<DL>
<DD>Implementation of a unix-like 'tail' command
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>aFileName</CODE> - a file name String
<DT><B>Returns:</B><DD>An array of two strings is returned. At index 0 the String
         representation of at most 10 last lines is located.
         At index 1 there is an informational string about how large a
         segment of the file is being returned.
         Null is returned if errors occur (file not found or io exception)</DL>
</DD>
</DL>
<HR>

<A NAME="tail(java.lang.String, int)"><!-- --></A><H3>
tail</H3>
<PRE>
public static java.lang.String[] <B>tail</B>(java.lang.String&nbsp;aFileName,
                                      int&nbsp;n)</PRE>
<DL>
<DD>Implementation of a unix-like 'tail -n' command
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>aFileName</CODE> - a file name String<DD><CODE>n</CODE> - int number of lines to be returned
<DT><B>Returns:</B><DD>An array of two strings is returned. At index 0 the String
         representation of at most n last lines is located.
         At index 1 there is an informational string about how large a
         segment of the file is being returned.
         Null is returned if errors occur (file not found or io exception)</DL>
</DD>
</DL>
<HR>

<A NAME="tail(java.io.RandomAccessFile, int)"><!-- --></A><H3>
tail</H3>
<PRE>
public static java.lang.String[] <B>tail</B>(java.io.RandomAccessFile&nbsp;raf,
                                      int&nbsp;n)</PRE>
<DL>
<DD>Implementation of a unix-like 'tail -n' command
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>raf</CODE> - a RandomAccessFile to tail<DD><CODE>n</CODE> - int number of lines to be returned
<DT><B>Returns:</B><DD>An array of two strings is returned. At index 0 the String
         representation of at most n last lines is located.
         At index 1 there is an informational string about how large a
         segment of the file is being returned.
         Null is returned if errors occur (file not found or io exception)</DL>
</DD>
</DL>
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