protected MavenCoord convertArtifactPathToCoord()

in repository/service/src/main/java/org/apache/karaf/cave/repository/service/maven/MavenServlet.java [596:641]
41 lines of code
7 McCabe index (conditional complexity)

    protected MavenCoord convertArtifactPathToCoord(String path) throws InvalidMavenArtifactRequest {
        if (path == null) {
            throw new InvalidMavenArtifactRequest("Cannot match request path to maven url, request path is empty.");
        }
        Matcher pathMatcher = ARTIFACT_REQUEST_URL_REGEX.matcher(path);
        if (pathMatcher.matches()) {
            String groupId = pathMatcher.group(1).replaceAll("/", ".");
            String artifactId = pathMatcher.group(2);
            String version = pathMatcher.group(3);
            String filename = pathMatcher.group(4);
            String extension;
            String classifier = "";
            String filePerfix = artifactId + "-" + version;
            String stripedFileName;

            if (version.endsWith("SNAPSHOT")) {
                String baseVersion = version.replaceAll("-SNAPSHOT", "");
                String timestampedFileName = filename.substring(artifactId.length() + baseVersion.length() + 2);
                //Check if snapshot is timestamped and override the version. @{link Artifact} will still treat it as a SNAPSHOT.
                //and also in case of artifact installation the proper filename will be used.
                Matcher ts = SNAPSHOT_TIMESTAMP_PATTERN.matcher(timestampedFileName);
                if (ts.matches()) {
                    version = baseVersion + "-" + ts.group(1);
                    filePerfix = artifactId + "-" + version;
                }
                stripedFileName = filename.replaceAll(SNAPSHOT_TIMESTAMP_REGEX, "SNAPSHOT");
                stripedFileName = stripedFileName.substring(filePerfix.length());
            } else {
                stripedFileName = filename.substring(filePerfix.length());
            }

            if (stripedFileName.startsWith("-") && stripedFileName.contains(".")) {
                classifier = stripedFileName.substring(1, stripedFileName.indexOf('.'));
            }
            extension = stripedFileName.substring(stripedFileName.indexOf('.') + 1);

            MavenCoord coord = new MavenCoord();
            coord.groupId = groupId;
            coord.artifactId = artifactId;
            coord.type = extension;
            coord.classifier = classifier;
            coord.version = version;
            return coord;
        }
        return null;
    }