Java Utililty Methods Regex Create

List of utility methods to do Regex Create

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Description

The list of methods to do Regex Create are organized into topic(s).

Method

StringtoRegex(String includes)
to Regex 
return includes == null ? ".*" : includes.replace(".", "/").replace("*", ".*");
StringtoRegEx(String input)
Convert the incoming string to a regular expression. 
return input.replace(".", "\\.").replace("*", ".*");
StringtoRegex(String name)
Computes the regular expression corresponding to a package or class name, by escaping dots. 
return name.replace(STRING_DOT, REGEX_DOT);
StringtoRegex(String param)
Convert the string into a regex to allow easy matching. 
StringBuffer regex = new StringBuffer();
for (int i = 0; i < param.length(); i++) {
    char next = param.charAt(i);
    if ('*' == next)
        regex.append(".+"); 
    else if ('?' == next)
        regex.append("."); 
    else if ('.' == next)
...
StringtoRegex(String wildcard)
convert wild card to regular expression 
String converted = "^" + wildcard.replaceAll("(^|/)\\*\\*/", "@@").replaceAll("(^|/)\\*\\*", "@@")
        .replaceAll("\\.", "\\\\.").replaceAll("\\*", "[^/]*").replaceAll("\\?", ".");
if (converted.contains("@@")) {
    converted = converted.replaceAll("@@", "(.*/)?") + "((^|/).*)?$";
return converted;
StringtoRegExFormat(String pattern)
Converts wildcard format ('*' and '?') to reg-ex format. 
StringBuffer regex = new StringBuffer(pattern.length());
boolean escaped = false;
boolean quoting = false;
for (int i = 0; i < pattern.length(); i++) {
    char c = pattern.charAt(i);
    if (c == '*' && !escaped) {
        if (quoting) {
            regex.append("\\E");
...
StringtoRegexPattern(String filter)
Convert filter to a regular expression 
StringBuffer pattern = new StringBuffer(".*"); 
boolean isWaitingForEndQuote = false;
for (int i = 0; i < filter.length(); i++) {
    char c = filter.charAt(i);
    if (c == '*' || c == '?') {
        if (isWaitingForEndQuote) {
            pattern.append("\\E"); 
            isWaitingForEndQuote = false;
...
StringtoRegexPattern(String pattern)
Converts a pattern string with '*' and '?' 
int patternLength = pattern.length();
StringBuffer result = new StringBuffer(patternLength);
boolean escaped = false;
boolean quoting = false;
for (int i = 0; i < patternLength; i++) {
    char ch = pattern.charAt(i);
    switch (ch) {
    case '*': {
...