diff options
| -rw-r--r-- | askama_shared/src/filters/mod.rs | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/askama_shared/src/filters/mod.rs b/askama_shared/src/filters/mod.rs index 58bcc47..ce87fd9 100644 --- a/askama_shared/src/filters/mod.rs +++ b/askama_shared/src/filters/mod.rs @@ -47,7 +47,7 @@ const URLENCODE_SET: &AsciiSet = &URLENCODE_STRICT_SET.remove(b'/'); // Askama or should refer to a local `filters` module. It should contain all the // filters shipped with Askama, even the optional ones (since optional inclusion // in the const vector based on features seems impossible right now). -pub const BUILT_IN_FILTERS: [&str; 26] = [ +pub const BUILT_IN_FILTERS: [&str; 27] = [ "abs", "capitalize", "center", @@ -62,6 +62,7 @@ pub const BUILT_IN_FILTERS: [&str; 26] = [ "join", "linebreaks", "linebreaksbr", + "paragraphbreaks", "lower", "lowercase", "safe", @@ -212,6 +213,18 @@ pub fn linebreaksbr<T: fmt::Display>(s: T) -> Result<String> { Ok(s.replace("\n", "<br/>")) } +/// Replaces only paragraph breaks in plain text with appropriate HTML +/// +/// A new line followed by a blank line becomes a paragraph break `<p>`. +/// Paragraph tags only wrap content; empty paragraphs are removed. +/// No `<br/>` tags are added. +pub fn paragraphbreaks<T: fmt::Display>(s: T) -> Result<String> { + let s = s.to_string(); + let linebroken = s.replace("\n\n", "</p><p>").replace("<p></p>", ""); + + Ok(format!("<p>{}</p>", linebroken)) +} + /// Converts to lowercase pub fn lower<T: fmt::Display>(s: T) -> Result<String> { let s = s.to_string(); @@ -458,6 +471,22 @@ mod tests { } #[test] + fn test_paragraphbreaks() { + assert_eq!( + paragraphbreaks(&"Foo\nBar Baz").unwrap(), + "<p>Foo\nBar Baz</p>" + ); + assert_eq!( + paragraphbreaks(&"Foo\nBar\n\nBaz").unwrap(), + "<p>Foo\nBar</p><p>Baz</p>" + ); + assert_eq!( + paragraphbreaks(&"Foo\n\n\n\n\nBar\n\nBaz").unwrap(), + "<p>Foo</p><p>\nBar</p><p>Baz</p>" + ); + } + + #[test] fn test_lower() { assert_eq!(lower(&"Foo").unwrap(), "foo"); assert_eq!(lower(&"FOO").unwrap(), "foo"); |