I have this PowerShell code:
$AsyncTask = $BitmapDecoder.GetSoftwareBitmapAsync()
But discovered that some of the images coming in are rotated, so experimenting I came up with this:
$BmTf = [BitmapTransform]::new()
$BmTf.Rotation = [BitmapRotation]::None
# $BmTf.Rotation = [BitmapRotation]::Clockwise90Degrees
# $BmTf.Rotation = [BitmapRotation]::Clockwise180Degrees
# $BmTf.Rotation = [BitmapRotation]::Clockwise270Degrees
$AsyncTask = $BitmapDecoder.GetSoftwareBitmapAsync(
[BitmapPixelFormat]::Bgra8,
[BitmapAlphaMode]::Ignore,
$BmTf,
[ExifOrientationMode]::IgnoreExifOrientation,
[ColorManagementMode]::DoNotColorManage
)
While it does work, I'm not familiar BitmapPixelFormat, or the other parameters. The documentation for GetSoftwareBitmapAsync() doesn't appear to give any hints on what the default value it is using for BitmapPixelFormat.
Does anyone know the best values to pass to the version of GetSoftwareBitmapAsync() that takes 5 parameters to mimic the version of GetSoftwareBitmapAsync() that takes 0 parameters?
EDIT:
Just found out that trying [BitmapPixelFormat]::Unknown causes this error:
Exception calling "GetSoftwareBitmapAsync" with "5" argument(s): "The
parameter is incorrect. Windows.Graphics.Imaging: The bitmap pixel
format is unsupported."
But no errors with [BitmapPixelFormat]::Bgra8.
I don't know why GetSoftwareBitmapAsync doesn't like [BitmapPixelFormat]::Unknown, but here is the solution I found.
I need to first load the image to see if it needs rotating. That is done with the original command:
$AsyncTask = $BitmapDecoder.GetSoftwareBitmapAsync()
$SoftwareBitmap = GetAsync( $AsyncTask, ([SoftwareBitmap]) )
Then extract its BitmapPixelFormat:
$BitmapPixelFormat = $SoftwareBitmap.BitmapPixelFormat
And then use $BitmapPixelFormat for all calls to the 5 parameter version of GetSoftwareBitmapAsync().
I know there are similar questions out there, but this one is a little different (I think).
I used the MATLAB Compiler to convert a .m to an Excel add-in. When I run the add-in on my machine, it works just fine. When I send it to a colleague, they get the "ActiveX component can't create object" error. They have added the add-in no problem.
Is there something going on here that's easily fixed?
MATLAB code:
function mess = createAndRouteOrderWithStyle()
c = startbbrg();
[num,text] = exportToM();
s = emsx('//blp/emapisvc_beta');
order.EMSX_ORDER_TYPE = text(1);
order.EMSX_SIDE = text(2);
order.EMSX_TICKER = text(3);
order.EMSX_AMOUNT = int32(num(1));
%order.EMSX_LIMIT_PRICE = num(2);
order.EMSX_BROKER = text(4);
order.EMSX_HAND_INSTRUCTION = text(5);
order.EMSX_TIF = text(6);
events = createOrderAndRoute(s,order);
mess = events.ERROR_MESSAGE;
close(s);
end
Excel VBA code:
Sub GO()
Cells(10,10).Formula = "=createAndRouteOrderWithStyle()"
End Sub
I am trying to a call a function using the following code:
{
fileName = strsplit(file,'.');
Process = strcat(fileName(1),'_config()')
}
The code works if I hard code: Process = EDA_config() but when I use the above to concatenate the string where fileName(1) = 'EDA', it results in an error. Any help would be appreciated.
I'm trying to make an exercise from Udacity's Full Stack Foundations course. I have the do_POST method inside my subclass from BaseHTTPRequestHandler, basically I want to get a post value named message submitted with a multipart form, this is the code for the method:
def do_POST(self):
try:
if self.path.endswith("/Hello"):
self.send_response(200)
self.send_header('Content-type', 'text/html')
self.end_headers
ctype, pdict = cgi.parse_header(self.headers['content-type'])
if ctype == 'multipart/form-data':
fields = cgi.parse_multipart(self.rfile, pdict)
messagecontent = fields.get('message')
output = ""
output += "<html><body>"
output += "<h2>Ok, how about this?</h2>"
output += "<h1>{}</h1>".format(messagecontent)
output += "<form method='POST' enctype='multipart/form-data' action='/Hello'>"
output += "<h2>What would you like to say?</h2>"
output += "<input name='message' type='text'/><br/><input type='submit' value='Submit'/>"
output += "</form></body></html>"
self.wfile.write(output.encode('utf-8'))
print(output)
return
except:
self.send_error(404, "{}".format(sys.exc_info()[0]))
print(sys.exc_info() )
The problem is that the cgi.parse_multipart(self.rfile, pdict) is throwing an exception: TypeError: can't concat bytes to str, the implementation was provided in the videos for the course, but they're using Python 2.7 and I'm using python 3, I've looked for a solution all afternoon but I could not find anything useful, what would be the correct way to read data passed from a multipart form in python 3?
I've came across here to solve the same problem like you have.
I found a silly solution for that.
I just convert 'boundary' item in the dictionary from string to bytes with an encoding option.
ctype, pdict = cgi.parse_header(self.headers['content-type'])
pdict['boundary'] = bytes(pdict['boundary'], "utf-8")
if ctype == 'multipart/form-data':
fields = cgi.parse_multipart(self.rfile, pdict)
In my case, It seems work properly.
To change the tutor's code to work for Python 3 there are three error messages you'll have to combat:
If you get these error messages
c_type, p_dict = cgi.parse_header(self.headers.getheader('Content-Type'))
AttributeError: 'HTTPMessage' object has no attribute 'getheader'
or
boundary = pdict['boundary'].decode('ascii')
AttributeError: 'str' object has no attribute 'decode'
or
headers['Content-Length'] = pdict['CONTENT-LENGTH']
KeyError: 'CONTENT-LENGTH'
when running
c_type, p_dict = cgi.parse_header(self.headers.getheader('Content-Type'))
if c_type == 'multipart/form-data':
fields = cgi.parse_multipart(self.rfile, p_dict)
message_content = fields.get('message')
this applies to you.
Solution
First of all change the first line to accommodate Python 3:
- c_type, p_dict = cgi.parse_header(self.headers.getheader('Content-Type'))
+ c_type, p_dict = cgi.parse_header(self.headers.get('Content-Type'))
Secondly, to fix the error of 'str' object not having any attribute 'decode', it's because of the change of strings being turned into unicode strings as of Python 3, instead of being equivalent to byte strings as in Python 3, so add this line just under the above one:
p_dict['boundary'] = bytes(p_dict['boundary'], "utf-8")
Thirdly, to fix the error of not having 'CONTENT-LENGTH' in pdict just add these lines before the if statement:
content_len = int(self.headers.get('Content-length'))
p_dict['CONTENT-LENGTH'] = content_len
Full solution on my Github:
https://github.com/rSkogeby/web-server
I am doing the same course and was running into the same problem. Instead of getting it to work with cgi I am now using the parse library. This was shown in the same course just a few lessons earlier.
from urllib.parse import parse_qs
length = int(self.headers.get('Content-length', 0))
body = self.rfile.read(length).decode()
params = parse_qs(body)
messagecontent = params["message"][0]
And you have to get rid of the enctype='multipart/form-data' in your form.
In my case I used cgi.FieldStorage to extract file and name instead of cgi.parse_multipart
form = cgi.FieldStorage(
fp=self.rfile,
headers=self.headers,
environ={'REQUEST_METHOD':'POST',
'CONTENT_TYPE':self.headers['Content-Type'],
})
print('File', form['file'].file.read())
print('Name', form['name'].value)
Another hack solution is to edit the source of the cgi module.
At the very beginning of the parse_multipart (around the 226th line):
Change the usage of the boundary to str(boundary)
...
boundary = b""
if 'boundary' in pdict:
boundary = pdict['boundary']
if not valid_boundary(boundary):
raise ValueError('Invalid boundary in multipart form: %r'
% (boundary,))
nextpart = b"--" + str(boundary)
lastpart = b"--" + str(boundary) + b"--"
...
We have our app working using this code (Is it possibile to pass parameters to the callback URL of a FB app which is accessed through a tab?), but the issue arises when there is no app_data parameter passed in. Here is an example of what we mean:
Works Fine: ("test" is written out fine)
https://www.facebook.com/phillypours/app_397493550309543?app_data=test
Does NOT Work:
https://www.facebook.com/phillypours/app_397493550309543
Code used with Base64 Encode & JSON Decode:
myArray = Split(Request("signed_request"), ".")
encoded_sig = myArray(0)
payload = myArray(1)
sig = base64_decode(Replace(encoded_sig, "-_", "+/"))
set data = JSON.parse(base64_decode(Replace(payload, "-_", "+/")))
Response.Write data.app_data
This is the error we receive when no parameter is passed in:
Object doesn't support this property or method: 'data.app_data'
Anyone have any thoughts on how to trap for this? I cannot do anything with "data.app_data" since this is what throws the error.
Any help would be greatly appreciated!!!
Thank you.
Dennis
I found a work around for this. Wanted to share to others could benefit. thanks, Dennis
<!--#INCLUDE VIRTUAL="/includes/fb_base64.asp"-->
<!--#INCLUDE VIRTUAL="/includes/fb_json_decode.asp"-->
Function parsePageSignedRequest()
If Request("signed_request") <> "" Then
myArray = Split(Request("signed_request"), ".")
payload = myArray(1)
payload_decoded = base64_decode(payload)
set data = JSON.parse(payload_decoded)
If instr(payload_decoded,"""app_data""") Then
AppData = data.app_data
End If
If instr(payload_decoded,"liked"":true,") Then
LikeStatus = True
End If
End If
End Function