Re: How do I convert a Base64 image url string to a png/jpg image file?

2020-07-30 Thread aberba via Digitalmars-d-learn

On Thursday, 30 July 2020 at 12:28:08 UTC, Adam D. Ruppe wrote:

On Thursday, 30 July 2020 at 12:22:46 UTC, aberba wrote:

[...]


I don't think I wrote it as a library yet, but the idea is 
pretty simple: they all start with "data:" so you look for that.


Then there's a type after that, so you read the string until 
the next ; character. It will be like image/png or image/jpeg.


Then there's the semicolon and the string "base64,".

After that, the rest of the string is base64 data.

```
import std.base64;
ubyte[] data = Base64.decode(rest_of_string);
```

And now that you have the data you can write it to a file:


⅞iii> import std.file;

std.file.write("filename.png", data);
```

And that should make the file you want.


Thank Adam.


Re: How do I convert a Base64 image url string to a png/jpg image file?

2020-07-30 Thread Adam D. Ruppe via Digitalmars-d-learn

On Thursday, 30 July 2020 at 12:22:46 UTC, aberba wrote:
I'm able to decode it to a buffer but the trouble is getting it 
from buffer to an actual image file. Any library function 
combination I can use?


I don't think I wrote it as a library yet, but the idea is pretty 
simple: they all start with "data:" so you look for that.


Then there's a type after that, so you read the string until the 
next ; character. It will be like image/png or image/jpeg.


Then there's the semicolon and the string "base64,".

After that, the rest of the string is base64 data.

```
import std.base64;
ubyte[] data = Base64.decode(rest_of_string);
```

And now that you have the data you can write it to a file:

```
import std.file;
std.file.write("filename.png", data);
```

And that should make the file you want.


How do I convert a Base64 image url string to a png/jpg image file?

2020-07-30 Thread aberba via Digitalmars-d-learn
So I have a base64 image url string and I'm trying to generate a 
png,jpg image file from it.


I'm able to decode it to a buffer but the trouble is getting it 
from buffer to an actual image file. Any library function 
combination I can use?