Make features additive

.github/workflows/test.yml

@@ -28,7 +28,7 @@ jobs:
         uses: actions-rs/cargo@v1
         with:
           command: check
-          args: --target ${{matrix.target}}
+          args: --target ${{matrix.target}} --no-default-features --features=reqwest-async
 
   test:
     strategy:
@@ -62,12 +62,8 @@ jobs:
           command: test
           args: --target ${{matrix.target}} --all-features -- --test-threads 1
 
-      # This is currently broken because
-      # reqwest is not actually optional
-      #
-      # - name: test --no-default-features
-      #   uses: actions-rs/cargo@v1
-      #   with:
-      #     command: test
-      #     args: --target ${{matrix.target}} --no-default-features
-
+      - name: test --no-default-features
+        uses: actions-rs/cargo@v1
+        with:
+          command: test
+          args: --target ${{matrix.target}} --no-default-features

Cargo.toml

@@ -11,8 +11,10 @@ license = "MIT/Apache-2.0"
 keywords = ["http", "reader", "buffer"]
 
 [features]
-default = ["reqwest"]
-sync = ["reqwest?/blocking"]
+default = ["reqwest-sync", "reqwest-async"]
+logging = ["log"]
+reqwest-async = ["reqwest"]
+reqwest-sync = ["reqwest/blocking"]
 
 [dependencies]
 byteorder = "1.4.2"

README.md

@@ -2,8 +2,9 @@
 
 HTTP client for HTTP Range requests with a buffer optimized for sequential requests.
 
+Implements Seek+Read for blocking clients, which makes it a drop-in replacement for local files.
 
-Usage example:
+Usage examples:
 
     use http_range_client::*;
 
@@ -12,3 +13,10 @@ Usage example:
     assert_eq!(bytes, b"fgb");
     let version = client.get_bytes(1).await?; // From buffer - no HTTP request!
     assert_eq!(version, [3]);
+
+    let mut client =
+        HttpReader::new("https://www.rust-lang.org/static/images/favicon-32x32.png");
+    client.seek(SeekFrom::Start(1)).ok();
+    let mut bytes = [0; 3];
+    client.read_exact(&mut bytes)?;
+    assert_eq!(&bytes, b"PNG");