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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
commit36d22d82aa202bb199967e9512281e9a53db42c9 (patch)
tree105e8c98ddea1c1e4784a60a5a6410fa416be2de /third_party/rust/bhttp/src/parse.rs
parentInitial commit. (diff)
downloadfirefox-esr-upstream.tar.xz
firefox-esr-upstream.zip
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/rust/bhttp/src/parse.rs')
-rw-r--r--third_party/rust/bhttp/src/parse.rs81
1 files changed, 81 insertions, 0 deletions
diff --git a/third_party/rust/bhttp/src/parse.rs b/third_party/rust/bhttp/src/parse.rs
new file mode 100644
index 0000000000..42ba2b8b01
--- /dev/null
+++ b/third_party/rust/bhttp/src/parse.rs
@@ -0,0 +1,81 @@
+#[cfg(feature = "read-http")]
+use crate::{Error, ReadSeek, Res};
+#[cfg(feature = "read-http")]
+use std::borrow::BorrowMut;
+
+pub const HTAB: u8 = 0x09;
+#[cfg(feature = "read-http")]
+pub const NL: u8 = 0x0a;
+#[cfg(feature = "read-http")]
+pub const CR: u8 = 0x0d;
+pub const SP: u8 = 0x20;
+pub const COMMA: u8 = 0x2c;
+#[cfg(feature = "read-http")]
+pub const SLASH: u8 = 0x2f;
+#[cfg(feature = "read-http")]
+pub const COLON: u8 = 0x3a;
+#[cfg(feature = "read-http")]
+pub const SEMICOLON: u8 = 0x3b;
+
+pub fn is_ows(x: u8) -> bool {
+ x == SP || x == HTAB
+}
+
+pub fn trim_ows(v: &[u8]) -> &[u8] {
+ for s in 0..v.len() {
+ if !is_ows(v[s]) {
+ for e in (s..v.len()).rev() {
+ if !is_ows(v[e]) {
+ return &v[s..=e];
+ }
+ }
+ }
+ }
+ &v[..0]
+}
+
+#[cfg(feature = "read-http")]
+pub fn downcase(n: &mut [u8]) {
+ for i in n {
+ if *i >= 0x41 && *i <= 0x5a {
+ *i += 0x20;
+ }
+ }
+}
+
+pub fn index_of(v: u8, line: &[u8]) -> Option<usize> {
+ for (i, x) in line.iter().enumerate() {
+ if *x == v {
+ return Some(i);
+ }
+ }
+ None
+}
+
+#[cfg(feature = "read-http")]
+pub fn split_at(v: u8, mut line: Vec<u8>) -> Option<(Vec<u8>, Vec<u8>)> {
+ index_of(v, &line).map(|i| {
+ let tail = line.split_off(i + 1);
+ let _ = line.pop();
+ (line, tail)
+ })
+}
+
+#[cfg(feature = "read-http")]
+pub fn read_line<T, R>(r: &mut T) -> Res<Vec<u8>>
+where
+ T: BorrowMut<R> + ?Sized,
+ R: ReadSeek + ?Sized,
+{
+ let mut buf = Vec::new();
+ r.borrow_mut().read_until(NL, &mut buf)?;
+ let tail = buf.pop();
+ if tail != Some(NL) {
+ return Err(Error::Truncated);
+ }
+ if buf.pop().ok_or(Error::Missing(CR))? == CR {
+ Ok(buf)
+ } else {
+ Err(Error::Missing(CR))
+ }
+}