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I am writing a simple C++ wrapper for miniz-cpp's implementation of zlib compression. I got deflation to work, but now I have a problem with inflating the data again.

I have a test case which (grossly simplified) boils down to:

I've been tying to figure why null bytes are appearing in certain strings. Example below.

I'm trying to build a common interface that converts 24 different XML Structures to Flate Files by concating XML elements. In Dell Boomi, we have an option to dynamically pass variable names to XSLT. As shown below:

We have stored all the 24 XML node names in the table rows. Ex:

CLIENTID,',',CLIENTNAME,',',CLIENTADDRESS,',',....,',',CLIENTCONTACT

PERSONID,',',PERSONNAME,',',PERSONADDRESS,',',....,',',PERSONCONTACT

......,',',.......,',',... etc

When we are passing the variable name and using that in Concat function it is taking as a string and printing only the String instead of XML Element values. Here is the code which we tried.

i am trying to inflate a buffer with the zlib module in NodeJs. I had the problem that i always got the "unexpected end of file" error so i used my original data and let nodejs deflate it to compare the byte values.

(1) So this is the value that i have:

120, 156, 106, 46, 97, 96, 96, 96, 73, 97, 96, 76, 1, 49, 152, 82, 24, 216, 226, 75, 138, 18, 147, 83, 115, 128, 60, 198, 92, 32, 161, 17, 173, 148, 158, 88, 146, 90, 158, 88, 169, 91, 80, 148, 162, 155, 155, 152, 153, 167, 91, 104, 96, 94, 172, 164, 83, 173, 148, 155, 153, 92, 148, 95, 172, 100, 101, 160, 103, 80, 27, 155, 149, 194, 32, 148, 145, 154, 88, 84, 146, 148, 154, 88, 18, 159, 153, 87, 146, 90, 84, 150, 152, 147, 196, 192, 176, 80, 41, 133, 129, 41, 191, 32, 145, 11, 104, 75, 113, 10, 3, 115, 94, 102, 14, 144, 85, 2, 97, 1, 0, 0, 0, 255, 255

(2) And this is what zlib.deflateSync gave me:

120, 156, 1, 125, 0, 130, 255, 120, 156, 106, 46, 97, 96, 96, 96, 73, 97, 96, 76, 1, 49, 152, 82, 24, 216, 226, 75, 138, 18, 147, 83, 115, 128, 60, 198, 92, 32, 161, 17, 173, 148, 158, 88, 146, 90, 158, 88, 169, 91, 80, 148, 162, 155, 155, 152, 153, 167, 91, 104, 96, 94, 172, 164, 83, 173, 148, 155, 153, 92, 148, 95, 172, 100, 101, 160, 103, 80, 27, 155, 149, 194, 32, 148, 145, 154, 88, 84, 146, 148, 154, 88, 18, 159, 153, 87, 146, 90, 84, 150, 152, 147, 196, 192, 176, 80, 41, 133, 129, 41, 191, 32, 145, 11, 104, 75, 113, 10, 3, 115, 94, 102, 14, 144, 85, 2, 97, 1, 0, 0, 0, 255, 255, 164, 112, 54, 45, (bold = same)

So as far as i can tell from the RFC the first two bytes are the compression method and flags and therefor both have it. The other bold part is the compressed data. So far so good.

The first part that doesn't match is the DICTID part. But according to the RFC it is only four bytes long so what are the other three bytes (255, 120, 156)? The last part that is not bold is the ADLER32 checksum of the compressed data.

Question: Is zlib (nodejs) somehow able to inflate data without the DICTID and ADLER32 checksum?

Current Code Snippet:

I try to use boost ssl socket server. I get the example from https://www.boost.org/doc/libs/1_69_0/doc/html/boost_asio/example/cpp11/ssl/server.cpp and try to cout receive data:

I am trying to create code to export out the images within a PDF using iText Version 7.19. I'm having some issues with Flate encoded images. All the Flate encoded images from the Microsoft free book I'm using as an example (see Moving to Microsoft Visual Studio 2010) always coming out pink and depending upon how I try to copy the bytes they can come out distorted.

If I attempt to copy all the image bytes at once (see the SaveFlateEncodedImage2 method in the code below), they come out distorted like this one:

If I attempt to copy them row by row (see the SaveFlateEncodedImage method in the code below), they are pink like this one

Here is the code that I'm using to export them:

In my PDF, there is an object

I made a 3x3 table that all cell is stroked but the outer lines are thick by Excel. Then exported to PDF and got the following stream (decoded from Flate).

My script below uses reduce() method in order to transform the array [[0, 1],[2, 3],[4, 5]] into [1, 2, 3, 4, 5]

When debugging this script, I noticed that in the scope tab within Chrome dev tools(see screenshot below), this has a value of undefined. Could you explain to me why? I was expecting this: window.

P.S: I know that there is flate() method but my question is about this value.

Thank you in advance.