From 6bce33305305131a30ff287a74cfb3b64dfb34de Mon Sep 17 00:00:00 2001
From: "Daniel P. Clark" <6ftdan@gmail.com>
Date: Sat, 16 Jun 2018 15:44:51 -0400
Subject: [PATCH 1/2] Encoding support

---
 src/encoding.rs | 12 ++++++++++++
 src/lib.rs      |  1 +
 src/string.rs   |  3 +++
 3 files changed, 16 insertions(+)
 create mode 100644 src/encoding.rs

diff --git a/src/encoding.rs b/src/encoding.rs
new file mode 100644
index 00000000..d1ca6f40
--- /dev/null
+++ b/src/encoding.rs
@@ -0,0 +1,12 @@
+use types::{c_int, c_char, Value};
+
+extern "C" {
+    pub fn rb_enc_associate_index(obj: Value, idx: c_int) -> Value;
+    pub fn rb_enc_find_index(name: *const c_char ) -> c_int;
+    pub fn rb_enc_get_index(obj: Value) -> c_int;
+    pub fn rb_enc_set_index(obj: Value, encindex: c_int);
+    pub fn rb_locale_encindex() -> c_int;
+    pub fn rb_to_encoding_index(obj: Value) -> c_int;
+    pub fn rb_usascii_encindex() -> c_int;
+    pub fn rb_utf8_encindex() -> c_int;
+}
diff --git a/src/lib.rs b/src/lib.rs
index ab73abc3..8ba8a219 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -3,6 +3,7 @@ extern crate libc;
 pub mod array;
 pub mod constant;
 pub mod class;
+pub mod encoding;
 pub mod fixnum;
 pub mod gc;
 pub mod float;
diff --git a/src/string.rs b/src/string.rs
index ba5f6406..5c939226 100644
--- a/src/string.rs
+++ b/src/string.rs
@@ -10,6 +10,9 @@ extern "C" {
     pub fn rb_utf8_str_new(str: *const c_char, len: c_long) -> Value;
     pub fn rb_string_value_cstr(str: *const Value) -> *const c_char;
     pub fn rb_string_value_ptr(str: *const Value) -> *const c_char;
+    pub fn rb_str_ascii_only_p(str: Value) -> bool;
+    pub fn rb_str_export_locale(str: Value) -> Value;
+    pub fn rb_str_valid_encoding_p(str: Value) -> bool;
 }
 
 #[repr(C)]

From 93f675366d71754e3c484f5a6d29600b22fe94c3 Mon Sep 17 00:00:00 2001
From: "Daniel P. Clark" <6ftdan@gmail.com>
Date: Sat, 16 Jun 2018 15:56:02 -0400
Subject: [PATCH 2/2] add filesystem encoding lookup

---
 src/encoding.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/encoding.rs b/src/encoding.rs
index d1ca6f40..d6eea28f 100644
--- a/src/encoding.rs
+++ b/src/encoding.rs
@@ -5,6 +5,7 @@ extern "C" {
     pub fn rb_enc_find_index(name: *const c_char ) -> c_int;
     pub fn rb_enc_get_index(obj: Value) -> c_int;
     pub fn rb_enc_set_index(obj: Value, encindex: c_int);
+    pub fn rb_filesystem_encindex() -> c_int;
     pub fn rb_locale_encindex() -> c_int;
     pub fn rb_to_encoding_index(obj: Value) -> c_int;
     pub fn rb_usascii_encindex() -> c_int;