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NetTalk Web Server => Web Server - Ask For Help => Topic started by: agustinh2000 on January 16, 2019, 09:10:13 AM

Title: Load image in browse (base64)
Post by: agustinh2000 on January 16, 2019, 09:10:13 AM

Hi!

I have string that I receive from the device (image base64 Camera.DestinationType.DATA_URL), When I want to see it directly in the browse (image field type) the string is broken ...
for example

data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQABAAD....(in field)

data:image/jpeg%3Bbase64%2C/9j/4AAQSkZJRgABAQAAAQABAAD...(
inspect element in web browser)..

Any idea how to solve it? (stringtheory, etc.)

thanks!

Agust

Title: Re: Load image in browse (base64)
Post by: Jane on January 16, 2019, 09:24:07 AM

Maybe StringTheory: http://www.capesoft.com/docs/StringTheory/StringTheory.htm#stUrlDecode

Title: Re: Load image in browse (base64)
Post by: Bruce on January 17, 2019, 01:15:35 AM

>> data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQABAAD

so the clues are here, ys. It's an image, encoded as base 64.
So you need to get the "data" part (I'm guessing it's everything after the comma) then Base64Decode it (using StringTheory) and you have the "raw jpeg" image.

The easiest way to serve it is to give it a name, same it to disk (somewhere under the web folder) and then use that name in an image control on the form.

Cheers
bruce

Title: Re: Load image in browse (base64)
Post by: agustinh2000 on January 17, 2019, 06:27:30 AM

Something like that..


str.SetValue(clip("data" part))
if str.Length()
  str.Base64Decode()

end

Title: Re: Load image in browse (base64)
Post by: Bruce on January 18, 2019, 01:48:14 AM

something like;

str.SetValue(clip("data part"))
str.SetValue(str.after(','))
str.base64Decode()
str.SaveFile('whatever.jpg')

Title: Re: Load image in browse (base64)
Post by: agustinh2000 on January 18, 2019, 07:18:19 AM

It works perfect, thank you very much!