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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-06-19 09:26:03 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-06-19 09:26:03 +0000 |
commit | 9918693037dce8aa4bb6f08741b6812923486c18 (patch) | |
tree | 21d2b40bec7e6a7ea664acee056eb3d08e15a1cf /src/librustdoc/html/escape.rs | |
parent | Releasing progress-linux version 1.75.0+dfsg1-5~progress7.99u1. (diff) | |
download | rustc-9918693037dce8aa4bb6f08741b6812923486c18.tar.xz rustc-9918693037dce8aa4bb6f08741b6812923486c18.zip |
Merging upstream version 1.76.0+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/librustdoc/html/escape.rs')
-rw-r--r-- | src/librustdoc/html/escape.rs | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/src/librustdoc/html/escape.rs b/src/librustdoc/html/escape.rs index 4a19d0a44..ea4b573ae 100644 --- a/src/librustdoc/html/escape.rs +++ b/src/librustdoc/html/escape.rs @@ -38,3 +38,39 @@ impl<'a> fmt::Display for Escape<'a> { Ok(()) } } + +/// Wrapper struct which will emit the HTML-escaped version of the contained +/// string when passed to a format string. +/// +/// This is only safe to use for text nodes. If you need your output to be +/// safely contained in an attribute, use [`Escape`]. If you don't know the +/// difference, use [`Escape`]. +pub(crate) struct EscapeBodyText<'a>(pub &'a str); + +impl<'a> fmt::Display for EscapeBodyText<'a> { + fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result { + // Because the internet is always right, turns out there's not that many + // characters to escape: http://stackoverflow.com/questions/7381974 + let EscapeBodyText(s) = *self; + let pile_o_bits = s; + let mut last = 0; + for (i, ch) in s.char_indices() { + let s = match ch { + '>' => ">", + '<' => "<", + '&' => "&", + _ => continue, + }; + fmt.write_str(&pile_o_bits[last..i])?; + fmt.write_str(s)?; + // NOTE: we only expect single byte characters here - which is fine as long as we + // only match single byte characters + last = i + 1; + } + + if last < s.len() { + fmt.write_str(&pile_o_bits[last..])?; + } + Ok(()) + } +} |