adm-zip
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Published
20 hours ago •
cthackers
cthackers
Directory is not detect from .isDirectory
I've created a simple test archive with this code
const fs = require('fs');
const path = require('path');
const Archive = require('adm-zip');
const zip = new Archive();
zip.addLocalFolder('TEST_1', 'Files/TEST_1');
zip.writeZip(/*target file name*/ "Test_1.zip");
This is archive generated
This is script for read Archive
const fs = require('fs');
const path = require('path');
const Archive = require('adm-zip');
const zip = new Archive("Test_1.zip");
var zipEntries = zip.getEntries(); // an array of ZipEntry records
zipEntries.forEach(function (zipEntry) {
console.log(zipEntry.toString());
});
This is the result, why no one directory found ?
{
"entryName" : "Files/TEST_1/File1.txt",
"name" : "File1.txt",
"comment" : "",
"isDirectory" : false,
"header" : {
"made" : 2836,
"version" : 20,
"flags" : 0,
"method" : STORED (0),
"time" : Thu Jun 24 2021 20:05:22 GMT+0200 (Ora legale dell’Europa centrale),
"crc" : 0x0,
"compressedSize" : 0 bytes,
"size" : 0 bytes,
"fileNameLength" : 22,
"extraLength" : 0 bytes,
"commentLength" : 0 bytes,
"diskNumStart" : 0,
"inAttr" : 0,
"attr" : 0,
"offset" : 0,
"entryHeaderSize" : 68 bytes
},
"compressedData" : <384 bytes buffer>
"data" : <null>
}
{
"entryName" : "Files/TEST_1/File2.txt",
"name" : "File2.txt",
"comment" : "",
"isDirectory" : false,
"header" : {
"made" : 2836,
"version" : 20,
"flags" : 0,
"method" : STORED (0),
"time" : Thu Jun 24 2021 20:05:22 GMT+0200 (Ora legale dell’Europa centrale),
"crc" : 0x0,
"compressedSize" : 0 bytes,
"size" : 0 bytes,
"fileNameLength" : 22,
"extraLength" : 0 bytes,
"commentLength" : 0 bytes,
"diskNumStart" : 0,
"inAttr" : 0,
"attr" : 0,
"offset" : 52,
"entryHeaderSize" : 68 bytes
},
"compressedData" : <384 bytes buffer>
"data" : <null>
}
{
"entryName" : "Files/TEST_1/File3..txt",
"name" : "File3..txt",
"comment" : "",
"isDirectory" : false,
"header" : {
"made" : 2836,
"version" : 20,
"flags" : 0,
"method" : STORED (0),
"time" : Thu Jun 24 2021 20:05:22 GMT+0200 (Ora legale dell’Europa centrale),
"crc" : 0x0,
"compressedSize" : 0 bytes,
"size" : 0 bytes,
"fileNameLength" : 23,
"extraLength" : 0 bytes,
"commentLength" : 0 bytes,
"diskNumStart" : 0,
"inAttr" : 0,
"attr" : 0,
"offset" : 104,
"entryHeaderSize" : 69 bytes
},
"compressedData" : <384 bytes buffer>
"data" : <null>
}
Folder "Files/TEST_1/" is attached into entryName property. It did not generate extra directory entries for this folder, since all files were in root folder. But it adds folder path into file names, folder is present but without folder entries. It should add folders as entry if you had some sub folders in that folder.
Another example
const fs = require('fs');
const path = require('path');
const Archive = require('adm-zip');
// ADD directory in archive
//
const zip = new Archive();
zip.addLocalFile('file_4.txt');
zip.addLocalFolder('TEST_1', 'source');
zip.writeZip(/*target file name*/ "example.zip");
If I want extract only source , how to extract if is not present the entryName ?
{
"entryName" : "file_4.txt",
"name" : "file_4.txt",
"comment" : "",
"isDirectory" : false,
"header" : {
"made" : 2836,
"version" : 20,
"flags" : 0,
"method" : STORED (0),
"time" : Fri Jun 25 2021 07:05:28 GMT+0200 (Ora legale dell’Europa centrale),
"crc" : 0x0,
"compressedSize" : 0 bytes,
"size" : 0 bytes,
"fileNameLength" : 10,
"extraLength" : 0 bytes,
"commentLength" : 0 bytes,
"diskNumStart" : 0,
"inAttr" : 0,
"attr" : 0,
"offset" : 0,
"entryHeaderSize" : 56 bytes
},
"compressedData" : <444 bytes buffer>
"data" : <null>
}
{
"entryName" : "source/File1.txt",
"name" : "File1.txt",
"comment" : "",
"isDirectory" : false,
"header" : {
"made" : 2836,
"version" : 20,
"flags" : 0,
"method" : STORED (0),
"time" : Thu Jun 24 2021 20:05:22 GMT+0200 (Ora legale dell’Europa centrale),
"crc" : 0x0,
"compressedSize" : 0 bytes,
"size" : 0 bytes,
"fileNameLength" : 16,
"extraLength" : 0 bytes,
"commentLength" : 0 bytes,
"diskNumStart" : 0,
"inAttr" : 0,
"attr" : 0,
"offset" : 40,
"entryHeaderSize" : 62 bytes
},
"compressedData" : <444 bytes buffer>
"data" : <null>
}
{
"entryName" : "source/File2.txt",
"name" : "File2.txt",
"comment" : "",
"isDirectory" : false,
"header" : {
"made" : 2836,
"version" : 20,
"flags" : 0,
"method" : STORED (0),
"time" : Thu Jun 24 2021 20:05:22 GMT+0200 (Ora legale dell’Europa centrale),
"crc" : 0x0,
"compressedSize" : 0 bytes,
"size" : 0 bytes,
"fileNameLength" : 16,
"extraLength" : 0 bytes,
"commentLength" : 0 bytes,
"diskNumStart" : 0,
"inAttr" : 0,
"attr" : 0,
"offset" : 86,
"entryHeaderSize" : 62 bytes
},
"compressedData" : <444 bytes buffer>
"data" : <null>
}
{
"entryName" : "source/File3..txt",
"name" : "File3..txt",
"comment" : "",
"isDirectory" : false,
"header" : {
"made" : 2836,
"version" : 20,
"flags" : 0,
"method" : STORED (0),
"time" : Thu Jun 24 2021 20:05:22 GMT+0200 (Ora legale dell’Europa centrale),
"crc" : 0x0,
"compressedSize" : 0 bytes,
"size" : 0 bytes,
"fileNameLength" : 17,
"extraLength" : 0 bytes,
"commentLength" : 0 bytes,
"diskNumStart" : 0,
"inAttr" : 0,
"attr" : 0,
"offset" : 132,
"entryHeaderSize" : 63 bytes
},
"compressedData" : <444 bytes buffer>
"data" : <null>
}
You are correct ... since "source" directory entry was not created you can not target it with "extractEntryTo" function.
I resolve the problem with this, now directory is detect from program
const fs = require('fs');
const path = require('path');
const Archive = require('adm-zip');
const zip = new Archive();
let stats = fs.statSync("TEST_1")
zip.addLocalFolder('TEST_1', "files/");
zip.addFile('files/', Buffer.alloc(0), "", stats);
zip.writeZip(/*target file name*/ "Test_1.zip");
Yes it can resolved this way,
but are you saying some external program like "7zip" (picture above) didn't found the directories or you wasn't able target directory with adm-zip ?