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author | Jeff Vander Stoep <jeffv@google.com> | 2020-12-21 16:30:52 +0000 |
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committer | Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com> | 2020-12-21 16:30:52 +0000 |
commit | f69374e3c35529202aecae8e1026271b9939c27f (patch) | |
tree | 0e29682c169c9d673b17bae77494e35b68c3bb5d /src/query_encoding.rs | |
parent | ec9391ffbe79d521cb2548c472232d2a215ed51d (diff) | |
parent | da6fecba5f6d2b5fe4d215c290a670469437ca5f (diff) | |
download | form_urlencoded-f69374e3c35529202aecae8e1026271b9939c27f.tar.gz |
Initial import of form_urlencoded v1.0.0 am: 6d73de0679 am: da6fecba5f
Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/form_urlencoded/+/1533346
MUST ONLY BE SUBMITTED BY AUTOMERGER
Change-Id: I58c7a7ed808b1d398b5e44e817ca738a234e0f20
Diffstat (limited to 'src/query_encoding.rs')
-rw-r--r-- | src/query_encoding.rs | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/src/query_encoding.rs b/src/query_encoding.rs new file mode 100644 index 0000000..76aed15 --- /dev/null +++ b/src/query_encoding.rs @@ -0,0 +1,35 @@ +// Copyright 2019 The rust-url developers. +// +// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or +// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license +// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your +// option. This file may not be copied, modified, or distributed +// except according to those terms. + +use std::borrow::Cow; + +pub type EncodingOverride<'a> = Option<&'a dyn Fn(&str) -> Cow<[u8]>>; + +pub(crate) fn encode<'a>(encoding_override: EncodingOverride, input: &'a str) -> Cow<'a, [u8]> { + if let Some(o) = encoding_override { + return o(input); + } + input.as_bytes().into() +} + +pub(crate) fn decode_utf8_lossy(input: Cow<[u8]>) -> Cow<str> { + match input { + Cow::Borrowed(bytes) => String::from_utf8_lossy(bytes), + Cow::Owned(bytes) => { + let raw_utf8: *const [u8]; + match String::from_utf8_lossy(&bytes) { + Cow::Borrowed(utf8) => raw_utf8 = utf8.as_bytes(), + Cow::Owned(s) => return s.into(), + } + // from_utf8_lossy returned a borrow of `bytes` unchanged. + debug_assert!(raw_utf8 == &*bytes as *const [u8]); + // Reuse the existing `Vec` allocation. + unsafe { String::from_utf8_unchecked(bytes) }.into() + } + } +} |