Java Reference
In-Depth Information
*/
public
public class
class JGrep
JGrep {
private
private static
final String USAGE =
"Usage: JGrep pattern [-chilrsnv][-f pattfile][filename...]" ;
/** The pattern we're looking for */
protected
static final
protected Pattern pattern ;
/** The matcher for this pattern */
protected
protected Matcher matcher ;
private
private boolean
boolean debug ;
/** Are we to only count lines, instead of printing? */
protected
protected static
static boolean
boolean countOnly = false
false ;
/** Are we to ignore case? */
protected
protected static
false ;
/** Are we to suppress printing of filenames? */
protected
static boolean
boolean ignoreCase = false
protected static
false ;
/** Are we to only list names of files that match? */
protected
static boolean
boolean dontPrintFileName = false
protected static
false ;
/** are we to print line numbers? */
protected
static boolean
boolean listOnly = false
protected static
false ;
/** Are we to be silent about errors? */
protected
static boolean
boolean numbered = false
protected static
false ;
/** are we to print only lines that DONT match? */
protected
static boolean
boolean silent = false
protected static
false ;
/** Are we to process arguments recursively if directories? */
protected
static boolean
boolean inVert = false
protected static
static boolean
boolean recursive = false
false ;
/** Construct a Grep object for the pattern, and run it
* on all input files listed in argv.
* Be aware that a few of the command-line options are not
* acted upon in this version - left as an exercise for the reader!
*/
public
public static
static void
void main ( String [] argv ) {
iif ( argv . length < 1 ) {
System . err . println ( USAGE );
System . exit ( 1 );
}
String patt = null
null ;
GetOpt go = new
new GetOpt ( "cf:hilnrRsv" );
char
char c ;
while
while (( c = go . getopt ( argv )) != 0 ) {
switch
switch ( c ) {
case
case 'c' :
countOnly = true
true ;
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