Examples of org.pdf4j.saxon.Platform.compileRegularExpression()

org.pdf4j.saxon.Platform.compileRegularExpression()
Create a compiled regular expression @param regex the source text of the regular expression, in XML Schema or XPath syntax @param xmlVersion version of XML in use (1.0 or 1.1) @param syntax @param flags the flags argument as supplied to functions such as fn:matches(), in string form @throws XPathException if the syntax of the regular expression or flags is incorrect @return the compiled regular expression

            }


            try {
                final Platform platform = Configuration.getPlatform();
                final int xmlVersion = c.getConfiguration().getXMLVersion();
                re = platform.compileRegularExpression(
                        pattern, xmlVersion, RegularExpression.XPATH_SYNTAX, flags);
            } catch (XPathException err) {
                XPathException de = new XPathException(err);
                de.setErrorCode("FORX0002");
                de.setXPathContext(c);

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            }


            try {
                final Platform platform = Configuration.getPlatform();
                final int xmlVersion = c.getConfiguration().getXMLVersion();
                re = platform.compileRegularExpression(
                        pat.getStringValueCS(), xmlVersion, RegularExpression.XPATH_SYNTAX, flags);
            } catch (XPathException err) {
                XPathException de = new XPathException(err);
                if (de.getErrorCodeLocalPart() == null) {
                    de.setErrorCode("FORX0002");

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                // TODO: Find a better (conformant) way of switching this option on
                if (flagstr.length() > 0 && flagstr.charAt(0) == '!') {
                    flagstr = flagstr.subSequence(1, flagstr.length());
                    syntax = RegularExpression.NATIVE_SYNTAX;
                }
                return platform.compileRegularExpression(in, xmlVersion, syntax, flagstr);
            } catch (XPathException err) {
                if (err.getErrorCodeLocalPart() == null) {
                    err.setErrorCode("FORX0002");
                }
                throw err;

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            try {
                final Platform platform = Configuration.getPlatform();
                final CharSequence regex = ((StringLiteral)this.regex).getStringValue();
                final CharSequence flagstr = ((StringLiteral)flags).getStringValue();
                final int xmlVersion = getConfiguration().getXMLVersion();
                pattern = platform.compileRegularExpression(
                        regex, xmlVersion, RegularExpression.XPATH_SYNTAX, flagstr);


                if (pattern.matches("")) {
                    invalidRegex("The regular expression must not be one that matches a zero-length string", "XTDE1150");
                }

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            }


            try {
                final Platform platform = Configuration.getPlatform();
                final int xmlVersion = c.getConfiguration().getXMLVersion();
                re = platform.compileRegularExpression(
                        arg1.getStringValueCS(), xmlVersion, RegularExpression.XPATH_SYNTAX, flags);
            } catch (XPathException err) {
                XPathException de = new XPathException(err);
                de.setErrorCode("FORX0002");
                de.setXPathContext(c);

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            try {
                final Platform platform = Configuration.getPlatform();
                final CharSequence regex = ((StringLiteral)this.regex).getStringValue();
                final CharSequence flagstr = ((StringLiteral)flags).getStringValue();
                final int xmlVersion = visitor.getConfiguration().getXMLVersion();
                pattern = platform.compileRegularExpression(
                        regex, xmlVersion, RegularExpression.XPATH_SYNTAX, flagstr);


                if (pattern.matches("")) {
                    invalidRegex("The regular expression must not be one that matches a zero-length string", "XTDE1150");
                }

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        RegularExpression re = pattern;
        if (re == null) {
            CharSequence flagstr = flags.evaluateAsString(context);
            final Platform platform = Configuration.getPlatform();
            final int xmlVersion = context.getConfiguration().getXMLVersion();
            re = platform.compileRegularExpression(
                    regex.evaluateAsString(context), xmlVersion, RegularExpression.XPATH_SYNTAX, flagstr);
            if (re.matches("")) {
                dynamicError("The regular expression must not be one that matches a zero-length string",
                        "XTDE1150", context);
            }

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