I was looking into my Mail Server in Text version; There is saw an attachment of filename= xyz.xslx &
Content-Transfer-Encoding: base-64 and after that there was stream of Base64 encoded Code. Initially the content-type was
Now, Is it possible to convert the base-64 encoded string code to retrieve the xslx document? I tried using several online sites like
base64decode.org but as the initial file type was xslx, it didn't gave any output in Plain-Text too. So how do i work out with issue ?
Can someone please explain why decoding Base64 giving a broken pdf?I need to find the way how to decode Base64 and get pdf out.When i use this service
I am able to pass Base64 and get file out without problem.
But when i do same in node.js I am getting empty (broken) file consistently.I tried different packages like:js-base64, atob
and none of them worked, getting same empty file as the result.
Link to my code:https://repl.it/@afiliptsov/FaroffGloriousFormula
I wonder if someone know how to convert the depth map of google street view (encoded as base64) into an image or a 2D matrix. I'm using Python and was able to get the base64 string, decode it and save it to a .png file. However, the exported png file cannot be open by any graphic viewer... I guess the base64 code wasn't decoded correctly...
Here is a post that mentioned the base64 string in GSV.
Here is my code:
#URL of the json file of a GSV depth mapurl_depthmap='http://maps.google.com/cbk?output=json&cb_client=maps_sv&v=4&dm=1&pm=1&ph=1&hl=en&panoid=lcptgwtxfJ6DccSzyWp0zA'# getting the json filer = requests.get(url_depthmap)# open itdepth_json= r.json()# get the base64 string of the depth mapdata=depth_json['model']['depth_map']# fix the 'inccorrect padding' error. The length of the string needs to be divisible by 4.data += "=" * ((4 - len(data) % 4) % 4)# convert the URL safe format to regular format.data=data.replace('-','+').replace('_','/')data = base64.decodestring(data) # decode the stringdata=zlib.decompress(data) #decompress the data# write it to a png fileimage_result = open('downloads/deer_decode.png', 'wb')image_result.write(data)
I have a method that returns an
unsigned char * array and I am trying to encode this as base64 and decode it later. So what I am doing is as follows:
unsigned char * val = myMethod();char * encodedMsg = reinterpret_cast<char *>(val);std::cout << "Returned message: " << val << std::endl;QByteArray raw = QByteArray(encodedMsg).toBase64(QByteArray::Base64Encoding | QByteArray::OmitTrailingEquals);
The output from the method is
\u0001z\ri!i, and the encoded value is
Now, I decode it as follows:
QByteArray decoded = QByteArray::fromBase64(raw, QByteArray::Base64Encoding | QByteArray::OmitTrailingEquals);qDebug() << decoded;
Now this returns
\\u0001z\\ri!i,. Notice that the slashes have been escaped.
I know I can replace this as a post processing step but is there a way to avoid this. Perhaps I am using the encoding/decoding incorrectly?
I have an email backup file which is purely text. How can I retrieve the document (PDF, images, word files) attached to it as a normal file?