augustl / js-inflate Goto Github PK

I've compressed following string using DeflateStream in C# :"<Some test string"

Base64 output is this: swnOz01VKEktLlEoLinKzEsHAA==

But this string won't inflate (or any other string which starts with < like html document).

If I try with string "Some test string"
its compressed to: C87PTVUoSS0uUSguKcrMSwcA
and it works just fine.

Hi @augustl,
have you considered porting this library for TypedArrays (specifically Uint8Array)?

For a zip with xml file alone I got the entry properly but if I give that as input for inflate uncompressed = JSInflate.inflate(entry.data); (where entry = unzipper.entries[0]). I am getting uncompressed data as empty.

i.e. inflate is resulting empty data.

Please review and suggest.

I may be doing something incredibly wrong, but I figured I'd post this in case you've seen it before. I cannot seem to get this library to work with any of my zip files. Whenever I call JSInflate.inflate on a zipped entry (from the js-unzip library), my processor gets pegged at 100% and it seems to be causing an infinite loop in this: while((i = zip_inflate_internal(buff, 0, buff.length)) > 0)

Here is my full code:

$('input:file').live('change', function() {
  var file = this.files[0],
  r = new FileReader();

  r.onload = function(e) {
    var unzipper = new JSUnzip(r.result);

    if (unzipper.isZipFile()) {
      unzipper.readEntries();
      for (var i = 0, var len = unzipper.entries.length; i < len; i++) {
        var entry = unzipper.entries[i];
        getEntry(entry);
      }
    }

  r.readAsBinaryString(file);
});

getEntry = function(entry) {
  var uncompressed;
  if (entry.fileName.match(/some_file_name/)) {
    if (entry.compressionMethod == 0) {
      // Uncompressed
      uncompressed = entry.data
    } else if (entry.compressionMethod == 8) {
      // Deflated
      console.log('inflating...');
      uncompressed = JSInflate.inflate(entry.data);
      console.log(uncompressed);
    }
};

As you can see, I'm only trying to uncompress one file within the Zip (and it's a small 1.5KB text file). It get's to the inflating... line, but that's when the CPU gets pegged in Chrome (in FF, it'll say the script has stopped responding). Putting some debug code in js-inflate, it looks like the aforementioned line is infinite-looping.

Also, I tried the dankogai/js-deflate library, and it does the exact same thing.