From b30caba358c3b96af2e52d0bcd6c9e34bb230077 Mon Sep 17 00:00:00 2001
From: rhysd <lin90162@yahoo.co.jp>
Date: Sat, 11 Jun 2022 14:07:14 +0900
Subject: [PATCH] make crossterm optional

---
 .github/workflows/ci.yml | 8 ++++++--
 Cargo.toml               | 9 ++++++++-
 src/input.rs             | 3 +++
 src/textarea.rs          | 2 +-
 4 files changed, 18 insertions(+), 4 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3872d30..4affff0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -4,6 +4,8 @@ on: [push, pull_request]
 jobs:
   lint:
     runs-on: ubuntu-latest
+    env:
+      CARGO_TERM_COLOR: always
     steps:
       - uses: actions/checkout@v3
       - uses: actions-rs/toolchain@v1
@@ -14,6 +16,8 @@ jobs:
           override: true
       - uses: Swatinem/rust-cache@v1
       - name: rustfmt
-        run: cargo fmt -- --check --color always
+        run: cargo fmt -- --check
       - name: clippy
-        run: cargo clippy --color always -- -D warnings
+        run: cargo clippy -- -D warnings
+      - name: clippy with --no-default-features
+        run: cargo clippy --no-default-features -- -D warnings
diff --git a/Cargo.toml b/Cargo.toml
index 4ca401f..c7d493b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,6 +3,13 @@ name = "tui-textarea"
 version = "0.0.0"
 edition = "2021"
 
+[features]
+default = ["crossterm"]
+
 [dependencies]
-crossterm = "0.23.2"
+crossterm = { version = "0.23", optional = true }
 tui = "0.18"
+
+[[example]]
+name = "minimal"
+required-features = ["crossterm"]
diff --git a/src/input.rs b/src/input.rs
index a708706..bb87f26 100644
--- a/src/input.rs
+++ b/src/input.rs
@@ -1,3 +1,4 @@
+#[cfg(feature = "crossterm")]
 use crossterm::event::{Event, KeyCode, KeyEvent, KeyModifiers};
 
 #[derive(Clone, Copy, Debug)]
@@ -33,6 +34,7 @@ impl Default for Input {
     }
 }
 
+#[cfg(feature = "crossterm")]
 impl From<Event> for Input {
     fn from(event: Event) -> Self {
         if let Event::Key(key) = event {
@@ -43,6 +45,7 @@ impl From<Event> for Input {
     }
 }
 
+#[cfg(feature = "crossterm")]
 impl From<KeyEvent> for Input {
     fn from(key: KeyEvent) -> Self {
         let ctrl = key.modifiers.contains(KeyModifiers::CONTROL);
diff --git a/src/textarea.rs b/src/textarea.rs
index 7c4b9ea..7ef6562 100644
--- a/src/textarea.rs
+++ b/src/textarea.rs
@@ -312,7 +312,7 @@ impl<'a> TextArea<'a> {
                 .char_indices()
                 .nth(chars)
                 .map(|(i, _)| i)
-                .unwrap_or(line[i..].len());
+                .unwrap_or_else(|| line[i..].len());
             let removed = line[i..i + bytes].to_string();
             line.replace_range(i..i + bytes, "");
             line.push(' ');