Regex parsing error

[bert-at-github]

The regex pattern, taken from a 3th party XmlSchema, throws an exception class DefaultTreeBuilder. The definition in the XSD is:

The exception is: Exception in thread "main" java.lang.RuntimeException: Multiple nodes found inside square brackets escape sequence before '/.\s]{0,2 at 15' at com.github.curiousoddman.rgxgen.parsing.dflt.DefaultTreeBuilder.handleCharacterVariations(DefaultTreeBuilder.java:404) ...

This regex works as expected when used in Perl like: if (m!^[A-Z0-9'-/.]{1}[A-Z0-9'-/.\s]{0,}$!) { ... }

The issue is reproducible in https://www.jdoodle.com/a/1NCw by setting: public static String PATTERN = "[A-Z0-9'\-/\.\s]{0,}"; (only the last part of the pattern is used, as this is where the problem comes from).

The problem seems to be the \s inside the brackets [ ].
By removing this whitespace char class, the parsing of the remaining regex is ok.

[bert-at-github]

Sorry, looks like escape char backslash has been stripped from the pattern and perl code when pasting. The pattern from the XSD looks like this: <xs:pattern value="[A-Z0-9'\-/\.]{1}[A-Z0-9'\-/\.\s]{0,}"/> and the working Perl code looks like this: if ($text =~ m!^[A-Z0-9'\-/\.]{1}[A-Z0-9'\-/\.\s]{0,}$!) { and the JDoodle input is: public static String PATTERN = "[A-Z0-9'\\-/\\.\\s]{0,20}";

[curious-odd-man]

Thank you for reporting this. I'll take care of that.

[curious-odd-man]

Hey. Issue is fixed. Please verify it on your end. You can get version with fix from snapshots repository: https://oss.sonatype.org/content/repositories/snapshots/ using this dependency

        <dependency>
            <groupId>com.github.curious-odd-man</groupId>
            <artifactId>rgxgen</artifactId>
            <version>1.1-SNAPSHOT</version>
        </dependency>

[bert-at-github]

Great, I can confirm this is now working correctly in the snapshot version. Thank you for this very fast response.

[curious-odd-man]

Closing as confirmed by the reporter. Commit 8790fb36481f00f9c9aa5c4319a42229bc96eee2