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Allow file constructed JarMap getOutputStream

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topjohnwu 2018-06-12 02:57:46 +08:00
parent 3f83919e09
commit 6db27c7758
1 changed files with 39 additions and 22 deletions
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57
utils/src/main/java/com/topjohnwu/utils/JarMap.java
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@ -24,10 +24,11 @@ import java.util.zip.ZipFile;
* */
public class JarMap implements Closeable, AutoCloseable {
private JarFile jarFile;
private JarInputStream jis;
private boolean isInputStream = false;
private LinkedHashMap<String, JarEntry> bufMap;
private Manifest manifest;
public JarMap(File file) throws IOException {
this(file, true);
@ -39,6 +40,7 @@ public class JarMap implements Closeable, AutoCloseable {
public JarMap(File file, boolean verify, int mode) throws IOException {
jarFile = new JarFile(file, verify, mode);
manifest = jarFile.getManifest();
}
public JarMap(String name) throws IOException {
@ -54,48 +56,54 @@ public class JarMap implements Closeable, AutoCloseable {
}
public JarMap(InputStream is, boolean verify) throws IOException {
isInputStream = true;
bufMap = new LinkedHashMap<>();
jis = new JarInputStream(is, verify);
bufMap = new LinkedHashMap<>();
JarEntry entry;
while ((entry = jis.getNextJarEntry()) != null) {
bufMap.put(entry.getName(), new JarMapEntry(entry, jis));
}
manifest = jis.getManifest();
}
public File getFile() {
return isInputStream ? null : new File(jarFile.getName());
return jarFile == null ? null : new File(jarFile.getName());
}
public Manifest getManifest() throws IOException {
return isInputStream ? jis.getManifest() : jarFile.getManifest();
public Manifest getManifest() {
return manifest;
}
public InputStream getInputStream(ZipEntry ze) throws IOException {
return isInputStream ? ((JarMapEntry) bufMap.get(ze.getName())).data.getInputStream() :
jarFile.getInputStream(ze);
if (bufMap != null) {
JarMapEntry e = (JarMapEntry) bufMap.get(ze.getName());
if (e != null)
return e.data.getInputStream();
}
return jarFile.getInputStream(ze);
}
public OutputStream getOutputStream(ZipEntry ze) {
if (!isInputStream) // Only support InputStream mode
return null;
ByteArrayStream bs = ((JarMapEntry) bufMap.get(ze.getName())).data;
bs.reset();
return bs;
manifest = null; /* Invalidate the manifest */
if (bufMap == null)
bufMap = new LinkedHashMap<>();
JarMapEntry e = new JarMapEntry(ze.getName());
bufMap.put(ze.getName(), e);
return e.data;
}
public byte[] getRawData(ZipEntry ze) throws IOException {
if (isInputStream) {
return ((JarMapEntry) bufMap.get(ze.getName())).data.toByteArray();
} else {
if (bufMap != null) {
JarMapEntry e = (JarMapEntry) bufMap.get(ze.getName());
if (e != null)
return e.data.toByteArray();
}
ByteArrayStream bytes = new ByteArrayStream();
bytes.readFrom(jarFile.getInputStream(ze));
return bytes.toByteArray();
}
}
public Enumeration<JarEntry> entries() {
return isInputStream ? Collections.enumeration(bufMap.values()) : jarFile.entries();
return jarFile == null ? Collections.enumeration(bufMap.values()) : jarFile.entries();
}
public ZipEntry getEntry(String name) {
@ -103,20 +111,29 @@ public class JarMap implements Closeable, AutoCloseable {
}
public JarEntry getJarEntry(String name) {
return isInputStream ? bufMap.get(name) : jarFile.getJarEntry(name);
JarEntry e = jarFile == null ? bufMap.get(name) : jarFile.getJarEntry(name);
if (e == null && bufMap != null)
return bufMap.get(name);
return e;
}
@Override
public void close() throws IOException {
(isInputStream ? jis : jarFile).close();
(jarFile == null ? jis : jarFile).close();
}
private static class JarMapEntry extends JarEntry {
ByteArrayStream data;
JarMapEntry(JarEntry je, InputStream is) {
super(je);
data = new ByteArrayStream();
data.readFrom(is);
}
JarMapEntry(String s) {
super(s);
data = new ByteArrayStream();
}
}
}