Examples of org.apache.tools.ant.types.RegularExpression

org.apache.tools.ant.types.RegularExpression
A regular expression datatype. Keeps an instance of the compiled expression for speed purposes. This compiled expression is lazily evaluated (it is compiled the first time it is needed). The syntax is the dependent on which regular expression type you are using. The system property "ant.regexp.regexpimpl" will be the classname of the implementation that will be used.
```
 For jdk  <= 1.3, there are two available implementations: org.apache.tools.ant.util.regexp.JakartaOroRegexp (the default) Based on the jakarta-oro package org.apache.tools.ant.util.regexp.JakartaRegexpRegexp Based on the jakarta-regexp package For jdk >= 1.4 an additional implementation is available: org.apache.tools.ant.util.regexp.Jdk14RegexpRegexp Based on the jdk 1.4 built in regular expression package. 
```
```
 <regexp [ [id="id"] pattern="expression" | refid="id" ] /> 
```
@see org.apache.oro.text.regex.Perl5Compiler @see org.apache.regexp.RE @see java.util.regex.Pattern @see org.apache.tools.ant.util.regexp.Regexp @ant.datatype name="regexp"

    public RegularExpression createRegexp() {
        if (regex != null) {
            throw new BuildException("Only one regular expression is allowed.");
        }


        regex = new RegularExpression();
        return regex;
    }

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            line = readLine();
            final int regexpsSize = regexps.size();


            while (line != null) {
                for (int i = 0; i < regexpsSize; i++) {
                    RegularExpression regexp = (RegularExpression)
                                                        regexps.elementAt(i);
                    Regexp re = regexp.getRegexp(getProject());
                    boolean matches = re.matches(line);
                    if (!matches) {
                        line = null;
                        break;
                    }

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        Parameter[] params = getParameters();
        if (params != null) {
            for (int i = 0; i < params.length; i++) {
                if (REGEXP_KEY.equals(params[i].getType())) {
                    String pattern = params[i].getValue();
                    RegularExpression regexp = new RegularExpression();
                    regexp.setPattern(pattern);
                    regexps.addElement(regexp);
                }
            }
        }
    }

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    public void setMatch(String match) {
        if (regex != null) {
            throw new BuildException("Only one regular expression is allowed");
        }


        regex = new RegularExpression();
        regex.setPattern(match);
    }

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    public RegularExpression createRegexp() {
        if (regex != null) {
            throw new BuildException("Only one regular expression is allowed.");
        }


        regex = new RegularExpression();
        return regex;
    }

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    public void setMatch(String match) {
        if (regex != null) {
            throw new BuildException("Only one regular expression is allowed");
        }


        regex = new RegularExpression();
        regex.setPattern(match);
    }

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    public RegularExpression createRegexp() {
        if (regex != null) {
            throw new BuildException("Only one regular expression is allowed.");
        }


        regex = new RegularExpression();
        return regex;
    }

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        if (r.isDirectory()) {
            return true;
        }


        if (myRegExp == null) {
            myRegExp = new RegularExpression();
            myRegExp.setPattern(userProvidedExpression);
            myExpression = myRegExp.getRegexp(getProject());
        }


        try {

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            final int regexpsSize = regexps.size();


            for (line = readLine(); line != null; line = readLine()) {
                boolean matches = true;
                for (int i = 0; matches && i < regexpsSize; i++) {
                    RegularExpression regexp
                        = (RegularExpression) regexps.elementAt(i);
                    Regexp re = regexp.getRegexp(getProject());
                    matches = re.matches(line, regexpOptions);
                }
                if (matches ^ isNegated()) {
                    break;
                }

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        Parameter[] params = getParameters();
        if (params != null) {
            for (int i = 0; i < params.length; i++) {
                if (REGEXP_KEY.equals(params[i].getType())) {
                    String pattern = params[i].getValue();
                    RegularExpression regexp = new RegularExpression();
                    regexp.setPattern(pattern);
                    regexps.addElement(regexp);
                } else if (NEGATE_KEY.equals(params[i].getType())) {
                    setNegate(Project.toBoolean(params[i].getValue()));
                } else if (CS_KEY.equals(params[i].getType())) {
                    setCaseSensitive(Project.toBoolean(params[i].getValue()));

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