Upload/Download files with non-printable char

hhting

Hi,

We use following apis to perform file upload/download, and passing filename in Dropbox-API-Arg header.

If the filename contains non-printable char (ascii < 32), we encode them using unicode. (according to this encoding doc)

However, this method is only valid for uploading files, downloading files will result in a malformed path error.

How can we properly encode filenames with non-printable char?

 

APIs

- https://content.dropboxapi.com/2/files/download

- https://content.dropboxapi.com/2/files/upload

 

Здравко

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@hhting wrote:

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If the filename contains non-printable char (ascii < 32), we encode them using unicode. (according to this encoding doc)

...

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Hi @hhting,

Since Dropbox API uses JSON encoding (RFC4627), you need to encode all codepoints < 32, as described in documentation:

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The representation of strings is similar to conventions used in the C
family of programming languages. A string begins and ends with
quotation marks. All Unicode characters may be placed within the
quotation marks except for the characters that must be escaped:
quotation mark, reverse solidus, and the control characters (U+0000
through U+001F).

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By the way, in spite supported by API, it's never good idea such chars to be used since may make Dropbox application confusion (and usually do) - as seems Dropbox application coders are newbee. If possible, try avoid them.

 

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@hhting wrote:

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However, this method is only valid for uploading files, downloading files will result in a malformed path error.

...

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Can you give some examples of such calls that are able to upload something, but while you use the same name/path, they cannot get it back? 🤔 What's the exact name?