smithay_clipboard/
mime.rs

1/// List of allowed mimes.
2pub static ALLOWED_MIME_TYPES: [&str; 3] =
3    ["text/plain;charset=utf-8", "UTF8_STRING", "text/plain"];
4
5/// Mime type supported by clipboard.
6#[derive(Clone, Copy, Eq, PartialEq, Debug)]
7pub enum MimeType {
8    /// text/plain;charset=utf-8 mime type.
9    ///
10    /// The primary mime type used by most clients
11    TextPlainUtf8 = 0,
12    /// UTF8_STRING mime type.
13    ///
14    /// Some X11 clients are using only this mime type, so we
15    /// should have it as a fallback just in case.
16    Utf8String = 1,
17    /// text/plain mime type.
18    ///
19    /// Fallback without charset parameter.
20    TextPlain = 2,
21}
22
23impl MimeType {
24    /// Find first allowed mime type among the `offered_mime_types`.
25    ///
26    /// `find_allowed()` searches for mime type clipboard supports, if we have a
27    /// match, returns `Some(MimeType)`, otherwise `None`.
28    pub fn find_allowed(offered_mime_types: &[String]) -> Option<Self> {
29        let mut fallback = None;
30        for offered_mime_type in offered_mime_types.iter() {
31            if offered_mime_type == ALLOWED_MIME_TYPES[Self::TextPlainUtf8 as usize] {
32                return Some(Self::TextPlainUtf8);
33            } else if offered_mime_type == ALLOWED_MIME_TYPES[Self::Utf8String as usize] {
34                return Some(Self::Utf8String);
35            } else if offered_mime_type == ALLOWED_MIME_TYPES[Self::TextPlain as usize] {
36                // Only use this mime type as a fallback.
37                fallback = Some(Self::TextPlain);
38            }
39        }
40
41        fallback
42    }
43}
44
45impl std::fmt::Display for MimeType {
46    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
47        write!(f, "{}", ALLOWED_MIME_TYPES[*self as usize])
48    }
49}
50
51/// Normalize CR and CRLF into LF.
52///
53/// 'text' mime types require CRLF line ending according to
54/// RFC-2046, however the platform line terminator and what applications
55/// expect is LF.
56pub fn normalize_to_lf(text: String) -> String {
57    text.replace("\r\n", "\n").replace('\r', "\n")
58}
smithay_clipboard/mime.rs

smithay_clipboard/
mime.rs
