Example usage for com.liferay.portal.kernel.util ClassUtil getClasses

Introduction

In this page you can find the example usage for com.liferay.portal.kernel.util ClassUtil getClasses.

Prototype

public static Set<String> getClasses(Reader reader, String className) throws IOException 

Source Link

Usage

From source file:com.liferay.tools.sourceformatter.JavaSourceProcessor.java

License:Open Source License

public static String stripJavaImports(String content, String packageDir, String className) throws IOException {

    Matcher matcher = _importsPattern.matcher(content);

    if (!matcher.find()) {
        return content;
    }/* w  w w  .  j  a va 2s .  c  o m*/

    String imports = matcher.group();

    Set<String> classes = ClassUtil.getClasses(new UnsyncStringReader(content), className);

    StringBundler sb = new StringBundler();

    UnsyncBufferedReader unsyncBufferedReader = new UnsyncBufferedReader(new UnsyncStringReader(imports));

    String line = null;

    while ((line = unsyncBufferedReader.readLine()) != null) {
        if (!line.contains("import ")) {
            continue;
        }

        int importX = line.indexOf(" ");
        int importY = line.lastIndexOf(".");

        String importPackage = line.substring(importX + 1, importY);

        if (importPackage.equals(packageDir) || importPackage.equals("java.lang")) {

            continue;
        }

        String importClass = line.substring(importY + 1, line.length() - 1);

        if (importClass.equals("*") || classes.contains(importClass)) {
            sb.append(line);
            sb.append("\n");
        }
    }

    ImportsFormatter importsFormatter = new JavaImportsFormatter();

    imports = importsFormatter.format(sb.toString());

    content = content.substring(0, matcher.start()) + imports + content.substring(matcher.end());

    // Ensure a blank line exists between the package and the first import

    content = content.replaceFirst("(?m)^[ \t]*(package .*;)\\s*^[ \t]*import", "$1\n\nimport");

    // Ensure a blank line exists between the last import (or package if
    // there are no imports) and the class comment

    content = content.replaceFirst("(?m)^[ \t]*((?:package|import) .*;)\\s*^[ \t]*/\\*\\*", "$1\n\n/**");

    return content;
}

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