public boolean accept(File f) {
if (f == null) {
return false;
}
if (f.isDirectory()) {
return true;
}
return pattern.matcher(f.getName()).matches();
}
public void setPattern(String globPattern) {
char[] gPat = globPattern.toCharArray();
char[] rPat = new char[gPat.length * 2];
boolean isWin32 = (File.separatorChar == '\\');
boolean inBrackets = false;
int j = 0;
this.globPattern = globPattern;
if (isWin32) {
// On windows, a pattern ending with *.* is equal to ending with *
int len = gPat.length;
if (globPattern.endsWith("*.*")) {
len -= 2;
}
for (int i = 0; i < len; i++) {
switch (gPat[i]) {
case '*':
rPat[j++] = '.';
rPat[j++] = '*';
break;
case '?':
rPat[j++] = '.';
break;
case '\\':
rPat[j++] = '\\';
rPat[j++] = '\\';
break;
default:
if ("+()^$.{}[]".indexOf(gPat[i]) >= 0) {
rPat[j++] = '\\';
}
rPat[j++] = gPat[i];
break;
}
}
} else {
for (int i = 0; i < gPat.length; i++) {
switch (gPat[i]) {
case '*':
if (!inBrackets) {
rPat[j++] = '.';
}
rPat[j++] = '*';
break;
case '?':
rPat[j++] = inBrackets ? '?' : '.';
break;
case '[':
inBrackets = true;
rPat[j++] = gPat[i];
if (i < gPat.length - 1) {
switch (gPat[i + 1]) {
case '!':
case '^':
rPat[j++] = '^';
i++;
break;
case ']':
rPat[j++] = gPat[++i];
break;
}
}
break;
case ']':
rPat[j++] = gPat[i];
inBrackets = false;
break;
case '\\':
if (i == 0 && gPat.length > 1 && gPat[1] == '~') {
rPat[j++] = gPat[++i];
} else {
rPat[j++] = '\\';
if (i < gPat.length - 1 && "*?[]".indexOf(gPat[i + 1]) >= 0) {
rPat[j++] = gPat[++i];
} else {
rPat[j++] = '\\';
}
}
break;
default:
// if ("+()|^$.{}<>".indexOf(gPat[i]) >= 0) {
if (!Character.isLetterOrDigit(gPat[i])) {
rPat[j++] = '\\';
}
rPat[j++] = gPat[i];
break;
}
}
}
this.pattern = Pattern.compile(new String(rPat, 0, j), Pattern.CASE_INSENSITIVE);
}