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cdrag-and-dropgtk

C: How do I convert %20 to spaces?

I ran across this program while writing a graphical frontend to the GNU Coreutils shred program. When a user drags in a file that has spaces in it, such as my private data.docxthe GTK+ DND service represents those spaces as %20. Using that example i would get (for the filename) my%20private&20data.docx. I need to convert those to space characters because I use the fopen function from stdio.h. fopen refuses to open filenames like that because it does not recognize %20 as a representation for a space.

Solution

  • No, you do not replace %20 with spaces. You decode the URL into a filename, with g_filename_from_uri:

    gchar *
g_filename_from_uri (const gchar *uri,
                     gchar **hostname,
                     GError **error);

    and usage therefore

    gchar *filename = g_filename_from_uri(uri, NULL, NULL);

    at its simplest.