Questions about File Extension

[shingohu]

var fileExtension = "";
    if (response.hasHeader("content-type")) {
      var type = response.header("content-type").split("/");
      if (type.length == 2) {
        fileExtension = ".${type[1]}";
      }
    }

You get file extensions by content-type,for example. Doc's content-type is application/msword，so the stored file name is uuid.msword,I want the filename is uuid.doc,So I can't open it in my app.
Why do not use content-disposition to get filenames for locally stored filenames,or we can specify the file name of the local store?

 var fileExtension = "";
    if (response.hasHeader("content-disposition")) {
      var fileName = response
          .header("content-disposition")
          .split(";")[1]
          .split("=")[1]
          .replaceAll("\"", "");
      fileExtension = fileName.substring(fileName.lastIndexOf("."));
    } else if (response.hasHeader("content-type")) {
      var type = response.header("content-type").split("/");
      if (type.length == 2) {
        fileExtension = ".${type[1]}";
      }
    }

[badboy-tian]

+1

[badboy-tian]

I wang to get the fileExtension by url. for examle: http://xxxx.com/xxx.mp3 , and the fileExtension should be mp3. any way to make this ?

[renefloor]

Will look into it

[LachlanGrant]

@renefloor is it possible we can manually override the file extension? I'm not too sure how the code above uses the fileExtensionVariable

[jimgreer]

+1

[nagoya0]

+1
content-type sometime contains not only MIME-type but also charset name or boundary string.
For example, stored file name have the potential to become "{UUID}.html; charset=utf-8".

[xilibro]

I have the same need。

[renefloor]

For most common mime-types this is fixed in version 1.2.1. You can see the content-types that are supported here: https://github.com/Baseflow/flutter_cache_manager/blob/develop/lib/src/web/mime_converter.dart

If one is missing you can create a pull request for that.

@LachlanGrant You can create your own FileService with a fixed fileExtension: https://github.com/Baseflow/flutter_cache_manager/blob/develop/lib/src/web/file_service.dart

@badboy-tian I have been thinking about getting the file extensions from other sources than content-type, for example the url, but decided that for now I won't do that. It is to tricky to cover all the cases, that would be a project on its own. You can do that yourself by creating a custom FileService and get the extension from the url.

[josejeria]

Can you please also add 'audio/x-aac' as 'aac' file extension ?
Thanks

[LachlanGrant]

@renefloor Perfect, thank you! a custom file service was what I was looking for :)

[renefloor]

@josejeria what should be the difference with audio/aac ?

[josejeria]

@renefloor it's related to coding. But both audio/aac and audio/x-aac have the same extension, 'aac'. Currently cache manager downloads and stores it as a ".x-aac" extension, and this does not exist.