????zip????????????
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]ZIP??????????ZIP??????????????????????????zip??????????????????????????????????????????
??????????
outer.zip +first.txt +inner.zip � +game.exe � +subitem.bin +picture.gif
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flatten.zip +first.txt +picture.gif +game.exe +subitem.bin
Asopsion.Zip??????????? Zip Archive??????[??]???????????
????
???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????
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????????????????????????????????????????????????? ????????????????????????????????????????????????????
1if(entry.getname()?tolowercase(locale.root).endswith( "?zip")){
2 entriestodelete.add(entry);
3 ...
4}????????????????????
Aspose.zip?????????????????writable???????zip???????????????????????????????????????????????????
??:?????????????????????????????????????????????
1byte [] b = new byte [8192];
2int bytesRead;
3inputStream entrystream = entry.open();
4bytearrayoutputStream innerCompressed = new bytearrayoutputStream();
5while(0 <(bytesread = entrystream.read(b?0?b.length))){
6 innerCompressed.write(b?0?bytesread);
7}????????????????????????????????????? ??????????????????????????????????? ??????????????????????:
1Archive Inner = new Archive(new bytearrayinputStream(innerCompressed.tobytearray()));???????
???????????zip???????????????????
1for(archiveentry e:entriestodelete){
2 outer.deleteentry(e);
3}????????
???????????????
1try(?????outer = new Archive( "outer.zip")){
2 arrayList <ArchiveEntry> entriestodelete = new ArrayList <ArchiveEntry>();
3 arrayList <string> namestoinsert = new ArrayList <String>();
4 arrayList <inuptStream> contentToInsert = new ArrayList <inputStream>();
5 for(archiveentry entry:outer.getentries()){
6 //????????????????????
7 if(entry.getname()?tolowercase(locale.root).endswith( "?zip")){
8 //??????????????????????????????
9 entriestodelete.add(entry);
10
11 //This extracts the entry to a memory stream
12 byte[] b = new byte[8192];
13 int bytesRead;
14 InputStream entryStream = entry.open();
15 ByteArrayOutputStream innerCompressed = new ByteArrayOutputStream();
16 while (0 < (bytesRead = entryStream.read(b, 0, b.length))) {
17 innerCompressed.write(b, 0, bytesRead);
18 }
19
20 // We know that content of the entry is a zip archive, so we may extract
21 try(Archive inner = new Archive(new ByteArrayInputStream(innerCompressed.toByteArray()))) {
22
23 // Loop over entries of inner archive
24 for(ArchiveEntry ie : inner.getEntries()) {
25
26 // Keep the name of inner entry.
27 namesToInsert.add(ie.getName());
28
29 InputStream ieStream = ie.open();
30 ByteArrayOutputStream content = new ByteArrayOutputStream();
31 while (0 < (bytesRead = ieStream.read(b, 0, b.length))) {
32 content.write(b, 0, bytesRead);
33 }
34
35 // Keep the content of inner entry.
36 contentToInsert.add(new ByteArrayInputStream(content.toByteArray()));
37 }
38 }
39 }
40 }
41
42 for(ArchiveEntry e : entriesToDelete) {
43 // Delete all the entries which are archives itself
44 outer.deleteEntry(e);
45 }
46
47 for(int i = 0; i < namesToInsert.size(); i++) {
48 // Adds entries which were entries of inner archives
49 outer.createEntry(namesToInsert.get(i), contentToInsert.get(i));
50 }
51
52 outer.save("flatten.zip");
53} catch(??Ex){
54 System.out.println(ex);
55}