Stuart McCulloch | 26e7a5a | 2011-10-17 10:31:43 +0000 | [diff] [blame] | 1 | package aQute.lib.osgi; |
| 2 | |
| 3 | import java.io.*; |
| 4 | import java.util.zip.*; |
| 5 | |
| 6 | public class EmbeddedResource implements Resource { |
| 7 | byte data[]; |
| 8 | long lastModified; |
| 9 | String extra; |
| 10 | |
| 11 | public EmbeddedResource(byte data[], long lastModified) { |
| 12 | this.data = data; |
| 13 | this.lastModified = lastModified; |
| 14 | } |
| 15 | |
| 16 | public InputStream openInputStream() throws FileNotFoundException { |
| 17 | return new ByteArrayInputStream(data); |
| 18 | } |
| 19 | |
| 20 | public void write(OutputStream out) throws IOException { |
| 21 | out.write(data); |
| 22 | } |
| 23 | |
| 24 | public String toString() { |
| 25 | return ":" + data.length + ":"; |
| 26 | } |
| 27 | |
| 28 | public static void build(Jar jar, InputStream in, long lastModified) throws IOException { |
| 29 | ZipInputStream jin = new ZipInputStream(in); |
| 30 | ZipEntry entry = jin.getNextEntry(); |
| 31 | while (entry != null) { |
| 32 | if (!entry.isDirectory()) { |
| 33 | byte data[] = collect(jin); |
| 34 | jar.putResource(entry.getName(), new EmbeddedResource(data, lastModified), true); |
| 35 | } |
| 36 | entry = jin.getNextEntry(); |
| 37 | } |
| 38 | jin.close(); |
| 39 | } |
| 40 | |
| 41 | /** |
| 42 | * Convenience method to turn an inputstream into a byte array. The method |
| 43 | * uses a recursive algorithm to minimize memory usage. |
| 44 | * |
| 45 | * @param in stream with data |
| 46 | * @param offset where we are in the stream |
| 47 | * @returns byte array filled with data |
| 48 | */ |
| 49 | static byte[] collect(InputStream in) throws IOException { |
| 50 | ByteArrayOutputStream out = new ByteArrayOutputStream(); |
| 51 | copy(in,out); |
| 52 | return out.toByteArray(); |
| 53 | } |
| 54 | |
| 55 | static void copy(InputStream in, OutputStream out) throws IOException { |
| 56 | int available = in.available(); |
| 57 | if ( available <= 10000) |
| 58 | available = 64000; |
| 59 | byte [] buffer = new byte[available]; |
| 60 | int size; |
| 61 | while ( (size=in.read(buffer))>0) |
| 62 | out.write(buffer,0,size); |
| 63 | } |
| 64 | |
| 65 | public long lastModified() { |
| 66 | return lastModified; |
| 67 | } |
| 68 | |
| 69 | public static void build(Jar sub, Resource resource) throws Exception { |
| 70 | InputStream in = resource.openInputStream(); |
| 71 | build(sub,in, resource.lastModified()); |
| 72 | in.close(); |
| 73 | } |
| 74 | |
| 75 | public String getExtra() { |
| 76 | return extra; |
| 77 | } |
| 78 | |
| 79 | public void setExtra(String extra) { |
| 80 | this.extra = extra; |
| 81 | } |
| 82 | |
| 83 | public long size() { |
| 84 | return data.length; |
| 85 | } |
| 86 | } |