Use memchr to find quote characters

BurntSushi · Oct 13, 2016 · b65cca3 · b65cca3
1 parent b8a0bae
commit b65cca3
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Showing 3 changed files with 4 additions and 1 deletion.
diff --git a/Cargo.toml b/Cargo.toml
@@ -24,6 +24,7 @@ doc = false
 [dependencies]
 byteorder = "0.5"
 rustc-serialize = "0.3"
+memchr = "0.1.11"
 
 [dev-dependencies]
 regex = "0.1"

diff --git a/src/lib.rs b/src/lib.rs
@@ -183,6 +183,7 @@
 #![deny(missing_docs)]
 
 extern crate byteorder;
+extern crate memchr;
 extern crate rustc_serialize;
 
 use std::error::Error as StdError;

diff --git a/src/writer.rs b/src/writer.rs
@@ -3,6 +3,7 @@ use std::io::{self, Write};
 use std::path::Path;
 use std::str;
 
+use memchr::memchr;
 use rustc_serialize::Encodable;
 
 use {
@@ -443,7 +444,7 @@ impl<W: io::Write> Writer<W> {
 
         buf.push(self.quote);
         loop {
-            match s.iter().position(|&v| v == self.quote) {
+            match memchr(self.quote, s) {
                 None => {
                     buf.extend_from_slice(s);
                     break