private String importFilter()

in maven-jxr/src/main/java/org/apache/maven/jxr/JavaCodeTransform.java [1136:1205]
37 lines of code
11 McCabe index (conditional complexity)

    private String importFilter(String line) {
        int start = -1;

        /*
         * Used for determining if this is a package declaration. If it is then we can make some additional assumptions:
         * - that this isn't a Class import so the full String is valid - that it WILL be on the disk since this is
         * based on the current - file.
         */
        boolean isPackage = line.trim().startsWith("package ");
        boolean isImport = line.trim().startsWith("import ");

        if (isImport || isPackage) {
            start = line.trim().indexOf(' ');
        }

        if (start != -1) {
            // filter out this packagename...
            String pkg = line.substring(start).trim();

            // specify the classname of this import if any.
            String classname = null;

            if (pkg.contains(".*")) {
                pkg = pkg.replace(".*", "");
            } else if (!isPackage) {
                // this is an explicit Class import

                String packageLine = pkg;

                // This catches a boundary problem where you have something like:
                //
                // Foo foo = FooMaster.getFooInstance().
                // danceLittleFoo();
                //
                // This breaks Jxr and won't be a problem when we hook
                // in the real parser.

                int a = packageLine.lastIndexOf('.') + 1;
                int b = packageLine.length() - 1;

                if (a > b + 1) {
                    classname = packageLine.substring(packageLine.lastIndexOf('.') + 1, packageLine.length() - 1);

                    int end = pkg.lastIndexOf('.');
                    if (end == -1) {
                        end = pkg.length() - 1;
                    }

                    pkg = pkg.substring(0, end);
                }
            }

            pkg = pkg.replace(";", "");
            String pkgHREF = getHREF(pkg);
            // if this package is within the PackageManager then you can create an HREF for it.

            if (packageManager.getPackageType(pkg) != null || isPackage) {
                // Create an HREF for explicit classname imports
                if (classname != null) {
                    line = line.replace(
                            classname, "<a href=\"" + pkgHREF + '/' + classname + ".html" + "\">" + classname + "</a>");
                }

                // now replace the given package with a href
                line = line.replace(pkg, "<a href=\"" + pkgHREF + '/' + DirectoryIndexer.INDEX + "\">" + pkg + "</a>");
            }
        }

        return line;
    }