Qutoe regexp
------------
Key: LANG-373
URL: https://issues.apache.org/jira/browse/LANG-373
Project: Commons Lang
Issue Type: New Feature
Reporter: Henri Yandell
Fix For: LangTwo 1.0
Once Lang is 1.4 dependent; add this from String Taglib's StringW (suitably
changed for Java's syntax):
/**
* Quote a string so that it may be used in a regular expression
* without any parts of the string being considered as a
* part of the regular expression's control characters.
*/
static public String quoteRegularExpression(String str) {
// replace ? + * / . ^ $ as long as they're not in character
// class. so must be done by hand
char[] chrs = str.toCharArray();
int sz = chrs.length;
StringBuffer buffer = new StringBuffer(2*sz);
for(int i=0; i<sz; i++) {
switch(chrs[i]) {
case '[' :
case ']' :
case '?' :
case '+' :
case '*' :
case '/' :
case '.' :
case '^' :
case '$' :
buffer.append("\\");
default :
buffer.append(chrs[i]);
}
}
return buffer.toString();
}
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