public Manifest() 
{
        manifestVersion = null;
}

Construct an empty manifest

 public Manifest(Reader r) throws ManifestException, IOException 
{
        BufferedReader reader = new BufferedReader(r);
        // This should be the manifest version
        String nextSectionName = mainSection.read(reader);
        String readManifestVersion
            = mainSection.getAttributeValue(ATTRIBUTE_MANIFEST_VERSION);
        if (readManifestVersion != null) {
            manifestVersion = readManifestVersion;
            mainSection.removeAttribute(ATTRIBUTE_MANIFEST_VERSION);
        }
        String line = null;
        while ((line = reader.readLine()) != null) {
            if (line.length() == 0) {
                continue;
            }
            Section section = new Section();
            if (nextSectionName == null) {
                Attribute sectionName = new Attribute(line);
                if (!sectionName.getName().equalsIgnoreCase(ATTRIBUTE_NAME)) {
                    throw new ManifestException("Manifest sections should "
                        + "start with a \"" + ATTRIBUTE_NAME
                        + "\" attribute and not \""
                        + sectionName.getName() + "\"");
                }
                nextSectionName = sectionName.getValue();
            } else {
                // we have already started reading this section
                // this line is the first attribute. set it and then
                // let the normal read handle the rest
                Attribute firstAttribute = new Attribute(line);
                section.addAttributeAndCheck(firstAttribute);
            }
            section.setName(nextSectionName);
            nextSectionName = section.read(reader);
            addConfiguredSection(section);
        }
}

Read a manifest file from the given reader

Parameters:

r - is the reader from which the Manifest is read

Throws:

ManifestException - if the manifest is not valid according to the JAR spec

IOException - if the manifest cannot be read from the reader.

 public  void addConfiguredAttribute(Attribute attribute) throws ManifestException 
{
        if (attribute.getKey() == null || attribute.getValue() == null) {
            throw new BuildException("Attributes must have name and value");
        }
        if (attribute.getKey().equals(ATTRIBUTE_MANIFEST_VERSION_LC)) {
            manifestVersion = attribute.getValue();
        } else {
            mainSection.addConfiguredAttribute(attribute);
        }
}

Add an attribute to the manifest - it is added to the main section.

 public  void addConfiguredSection(Section section) throws ManifestException 
{
        String sectionName = section.getName();
        if (sectionName == null) {
            throw new BuildException("Sections must have a name");
        }
        sections.put(sectionName, section);
}

Add a section to the manifest

 public boolean equals(Object rhs) 
{
        if (rhs == null || rhs.getClass() != getClass()) {
            return false;
        }
        if (rhs == this) {
            return true;
        }
        Manifest rhsManifest = (Manifest) rhs;
        if (manifestVersion == null) {
            if (rhsManifest.manifestVersion != null) {
                return false;
            }
        } else if (!manifestVersion.equals(rhsManifest.manifestVersion)) {
            return false;
        }
        if (!mainSection.equals(rhsManifest.mainSection)) {
            return false;
        }
        return sections.equals(rhsManifest.sections);
}

 public static Manifest getDefaultManifest() throws BuildException 
{
        InputStream in = null;
        InputStreamReader insr = null;
        try {
            String defManifest = "/org/apache/tools/ant/defaultManifest.mf";
            in = Manifest.class.getResourceAsStream(defManifest);
            if (in == null) {
                throw new BuildException("Could not find default manifest: "
                    + defManifest);
            }
            try {
                insr = new InputStreamReader(in, "UTF-8");
                Manifest defaultManifest = new Manifest(insr);
                String version = System.getProperty("java.runtime.version");
                if (version == null) {
                    version = System.getProperty("java.vm.version");
                }
                Attribute createdBy = new Attribute("Created-By",
                    version + " ("
                    + System.getProperty("java.vm.vendor") + ")");
                defaultManifest.getMainSection().storeAttribute(createdBy);
                return defaultManifest;
            } catch (UnsupportedEncodingException e) {
                insr = new InputStreamReader(in);
                return new Manifest(insr);
            }
        } catch (ManifestException e) {
            throw new BuildException("Default manifest is invalid !!", e);
        } catch (IOException e) {
            throw new BuildException("Unable to read default manifest", e);
        } finally {
            FileUtils.close(insr);
            FileUtils.close(in);
        }
}

Construct a manifest from Ant's default manifest file.

 public Section getMainSection() 
{
        return mainSection;
}

Get the main section of the manifest

 public String getManifestVersion() 
{
        return manifestVersion;
}

Get the version of the manifest

 public Section getSection(String name) 
{
        return (Section) sections.get(name);
}

Get a particular section from the manifest

 public Enumeration getSectionNames() 
{
        return CollectionUtils.asEnumeration(sections.keySet().iterator());
}

Get the section names in this manifest.

 public Enumeration getWarnings() 
{
        Vector warnings = new Vector();
        Enumeration warnEnum = mainSection.getWarnings();
        while (warnEnum.hasMoreElements()) {
            warnings.addElement(warnEnum.nextElement());
        }
        // create a vector and add in the warnings for all the sections
        Iterator e = sections.values().iterator();
        while (e.hasNext()) {
            Section section = (Section) e.next();
            Enumeration e2 = section.getWarnings();
            while (e2.hasMoreElements()) {
                warnings.addElement(e2.nextElement());
            }
        }
        return warnings.elements();
}

Get the warnings for this manifest.

 public int hashCode() 
{
        int hashCode = 0;
        if (manifestVersion != null) {
            hashCode += manifestVersion.hashCode();
        }
        hashCode += mainSection.hashCode();
        hashCode += sections.hashCode();
        return hashCode;
}

 public  void merge(Manifest other) throws ManifestException 
{
        merge(other, false);
}

Merge the contents of the given manifest into this manifest without merging Class-Path attributes.

 public  void merge(Manifest other,
    boolean overwriteMain) throws ManifestException 
{
        merge(other, overwriteMain, false);
}

Merge the contents of the given manifest into this manifest without merging Class-Path attributes.

 public  void merge(Manifest other,
    boolean overwriteMain,
    boolean mergeClassPaths) throws ManifestException 
{
        if (other != null) {
             if (overwriteMain) {
                 mainSection = (Section) other.mainSection.clone();
             } else {
                 mainSection.merge(other.mainSection, mergeClassPaths);
             }
             if (other.manifestVersion != null) {
                 manifestVersion = other.manifestVersion;
             }
             Enumeration e = other.getSectionNames();
             while (e.hasMoreElements()) {
                 String sectionName = (String) e.nextElement();
                 Section ourSection = (Section) sections.get(sectionName);
                 Section otherSection
                    = (Section) other.sections.get(sectionName);
                 if (ourSection == null) {
                     if (otherSection != null) {
                         addConfiguredSection((Section) otherSection.clone());
                     }
                 } else {
                     ourSection.merge(otherSection, mergeClassPaths);
                 }
             }
         }
}

Merge the contents of the given manifest into this manifest

 public String toString() 
{
        StringWriter sw = new StringWriter();
        try {
            write(new PrintWriter(sw));
        } catch (IOException e) {
            return null;
        }
        return sw.toString();
}

Convert the manifest to its string representation

 public  void write(PrintWriter writer) throws IOException 
{
        write(writer, false);
}

Write the manifest out to a print writer without flattening multi-values attributes (i.e. Class-Path).

 public  void write(PrintWriter writer,
    boolean flatten) throws IOException 
{
        writer.print(ATTRIBUTE_MANIFEST_VERSION + ": " + manifestVersion + EOL);
        String signatureVersion
            = mainSection.getAttributeValue(ATTRIBUTE_SIGNATURE_VERSION);
        if (signatureVersion != null) {
            writer.print(ATTRIBUTE_SIGNATURE_VERSION + ": "
                + signatureVersion + EOL);
            mainSection.removeAttribute(ATTRIBUTE_SIGNATURE_VERSION);
        }
        mainSection.write(writer, flatten);
        // add it back
        if (signatureVersion != null) {
            try {
                Attribute svAttr = new Attribute(ATTRIBUTE_SIGNATURE_VERSION,
                    signatureVersion);
                mainSection.addConfiguredAttribute(svAttr);
            } catch (ManifestException e) {
                // shouldn't happen - ignore
            }
        }
        Iterator e = sections.keySet().iterator();
        while (e.hasNext()) {
            String sectionName = (String) e.next();
            Section section = getSection(sectionName);
            section.write(writer, flatten);
        }
}

Write the manifest out to a print writer.