Repository: ashleygwilliams/wasm-pack (rust)

Issue:
copy over readme from crate (~for now~)
for 0.1.0 let's just copy over the README.md from the crate

there's great convo in #7 and i'd like to move to something more like that for 0.2.0 or greater.

Pull request description:
feat(readme): copy from crate
fixes #30 and #24 

Patch:
diff --git a/Cargo.lock b/Cargo.lock
index 9560c5f..6222abf 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -89,14 +89,6 @@ dependencies = [
  "scopeguard 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "dir-diff"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "walkdir 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "dtoa"
 version = "0.4.2"
@@ -162,15 +154,6 @@ name = "itoa"
 version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "kernel32-sys"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "lazy_static"
 version = "0.2.11"
@@ -364,15 +347,6 @@ name = "rustc-demangle"
 version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "same-file"
-version = "0.1.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "scopeguard"
 version = "0.3.3"
@@ -565,21 +539,10 @@ name = "void"
 version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "walkdir"
-version = "1.0.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "same-file 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "wasm-pack"
 version = "0.1.0"
 dependencies = [
- "dir-diff 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "failure 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "quicli 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.27 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -588,11 +551,6 @@ dependencies = [
  "toml 0.4.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "winapi"
-version = "0.2.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "winapi"
 version = "0.3.4"
@@ -602,11 +560,6 @@ dependencies = [
  "winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "winapi-build"
-version = "0.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "winapi-i686-pc-windows-gnu"
 version = "0.4.0"
@@ -637,7 +590,6 @@ dependencies = [
 "checksum chrono 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7c20ebe0b2b08b0aeddba49c609fe7957ba2e33449882cb186a180bc60682fa9"
 "checksum clap 2.29.4 (registry+https://github.com/rust-lang/crates.io-index)" = "7b8f59bcebcfe4269b09f71dab0da15b355c75916a8f975d3876ce81561893ee"
 "checksum coco 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "c06169f5beb7e31c7c67ebf5540b8b472d23e3eade3b2ec7d1f5b504a85f91bd"
-"checksum dir-diff 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "86ea5bba0129e6a7ff7fc710a49f3234c2f940f9baa26e87cf9a837ca62e7b82"
 "checksum dtoa 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "09c3753c3db574d215cba4ea76018483895d7bff25a31b49ba45db21c48e50ab"
 "checksum either 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "740178ddf48b1a9e878e6d6509a1442a2d42fd2928aae8e7a6f8a36fb01981b3"
 "checksum env_logger 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)" = "f15f0b172cb4f52ed5dbf47f774a387cd2315d1bf7894ab5af9b083ae27efa5a"
@@ -647,7 +599,6 @@ dependencies = [
 "checksum fuchsia-zircon-sys 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "3dcaa9ae7725d12cdb85b3ad99a434db70b468c09ded17e012d86b5c1010f7a7"
 "checksum glob 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "8be18de09a56b60ed0edf84bc9df007e30040691af7acd1c41874faac5895bfb"
 "checksum itoa 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "8324a32baf01e2ae060e9de58ed0bc2320c9a2833491ee36cd3b4c414de4db8c"
-"checksum kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7507624b29483431c0ba2d82aece8ca6cdba9382bff4ddd0f7490560c056098d"
 "checksum lazy_static 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "76f033c7ad61445c5b347c7382dd1237847eb1bce590fe50365dcb33d546be73"
 "checksum lazy_static 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c8f31047daa365f19be14b47c29df4f7c3b581832407daabe6ae77397619237d"
 "checksum libc 0.2.36 (registry+https://github.com/rust-lang/crates.io-index)" = "1e5d97d6708edaa407429faa671b942dc0f2727222fb6b6539bf1db936e4b121"
@@ -672,7 +623,6 @@ dependencies = [
 "checksum regex 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)" = "5be5347bde0c48cfd8c3fdc0766cdfe9d8a755ef84d620d6794c778c91de8b2b"
 "checksum regex-syntax 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "8e931c58b93d86f080c734bfd2bce7dd0079ae2331235818133c8be7f422e20e"
 "checksum rustc-demangle 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "aee45432acc62f7b9a108cc054142dac51f979e69e71ddce7d6fc7adf29e817e"
-"checksum same-file 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "d931a44fdaa43b8637009e7632a02adc4f2b2e0733c08caa4cf00e8da4a117a7"
 "checksum scopeguard 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "94258f53601af11e6a49f722422f6e3425c52b06245a5cf9bc09908b174f5e27"
 "checksum serde 1.0.27 (registry+https://github.com/rust-lang/crates.io-index)" = "db99f3919e20faa51bb2996057f5031d8685019b5a06139b1ce761da671b8526"
 "checksum serde_derive 1.0.27 (registry+https://github.com/rust-lang/crates.io-index)" = "f4ba7591cfe93755e89eeecdbcc668885624829b020050e6aec99c2a03bd3fd0"
@@ -698,10 +648,7 @@ dependencies = [
 "checksum utf8-ranges 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "662fab6525a98beff2921d7f61a39e7d59e0b425ebc7d0d9e66d316e55124122"
 "checksum vec_map 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "887b5b631c2ad01628bbbaa7dd4c869f80d3186688f8d0b6f58774fbe324988c"
 "checksum void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6a02e4885ed3bc0f2de90ea6dd45ebcbb66dacffe03547fadbb0eeae2770887d"
-"checksum walkdir 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)" = "bb08f9e670fab86099470b97cd2b252d6527f0b3cc1401acdb595ffc9dd288ff"
-"checksum winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "167dc9d6949a9b857f3451275e911c3f44255842c1f7a76f33c55103a909087a"
 "checksum winapi 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "04e3bd221fcbe8a271359c04f21a76db7d0c6028862d1bb5512d85e1e2eb5bb3"
-"checksum winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "2d315eee3b34aca4797b2da6b13ed88266e6d612562a0c46390af8299fc699bc"
 "checksum winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
 "checksum winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
 "checksum wincolor 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "eeb06499a3a4d44302791052df005d5232b927ed1a9658146d842165c4de7767"
diff --git a/Cargo.toml b/Cargo.toml
index 0f86611..5fb8342 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -14,6 +14,3 @@ serde = "1.0"
 serde_derive = "1.0"
 serde_json = "1.0"
 toml = "0.4"
-
-[dev-dependencies]
-dir-diff = "0.2.0"
diff --git a/examples/js-hello-world/README.md b/examples/js-hello-world/README.md
new file mode 100644
index 0000000..8fbd2b3
--- /dev/null
+++ b/examples/js-hello-world/README.md
@@ -0,0 +1,2 @@
+# js-hello-world
+> an example rust -> wasm project
diff --git a/src/lib.rs b/src/lib.rs
index 06e1ae6..bb6a2c2 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -4,91 +4,17 @@ extern crate serde_derive;
 extern crate serde_json;
 extern crate toml;
 
+pub mod build;
+pub mod bindgen;
+pub mod readme;
+pub mod manifest;
+
 use std::fs;
-use std::fs::File;
-use std::io::prelude::*;
 
 use failure::Error;
 
-#[derive(Deserialize)]
-struct CargoManifest {
-    package: CargoPackage,
-}
-
-#[derive(Deserialize)]
-struct CargoPackage {
-    name: String,
-    description: String,
-    version: String,
-    license: String,
-    repository: String,
-}
-
-#[derive(Serialize)]
-struct NpmPackage {
-    name: String,
-    description: String,
-    version: String,
-    license: String,
-    repository: Repository,
-    files: Vec<String>,
-}
-
-#[derive(Serialize)]
-struct Repository {
-    #[serde(rename = "type")]
-    ty: String,
-    url: String,
-}
-
-fn read_cargo_toml(path: &str) -> Result<CargoManifest, Error> {
-    let path_to_manifest = format!("{}/Cargo.toml", path);
-    println!("👩‍🍳  reading {}", path_to_manifest);
-    let mut cargo_file = File::open(path_to_manifest)?;
-    let mut cargo_contents = String::new();
-    cargo_file.read_to_string(&mut cargo_contents)?;
-
-    Ok(toml::from_str(&cargo_contents)?)
-}
-
-impl CargoManifest {
-    fn into_npm(self) -> NpmPackage {
-        let filename = self.package.name.replace("-", "_");
-        let js_file = format!("{}.js", filename);
-        let wasm_file = format!("{}_bg.wasm", filename);
-        NpmPackage {
-            name: self.package.name,
-            description: self.package.description,
-            version: self.package.version,
-            license: self.package.license,
-            repository: Repository {
-                ty: "git".to_string(),
-                url: self.package.repository,
-            },
-            files: vec![js_file, wasm_file],
-        }
-    }
-}
-
-fn create_pkg_dir(path: &str) -> Result<(), Error> {
+pub fn create_pkg_dir(path: &str) -> Result<(), Error> {
     let path_to_pkg_dir = format!("{}/pkg", path);
     fs::create_dir_all(path_to_pkg_dir)?;
     Ok(())
 }
-
-/// Generate a package.json file inside in `./pkg`.
-pub fn write_package_json(path: &str) -> Result<(), Error> {
-    create_pkg_dir(path)?;
-    let path_to_pkg_file = format!("{}/pkg/package.json", path);
-    let mut pkg_file = File::create(path_to_pkg_file)?;
-    let crate_data = read_cargo_toml(path)?;
-    let npm_data = crate_data.into_npm();
-    let npm_json = serde_json::to_string(&npm_data)?;
-    pkg_file.write_all(npm_json.as_bytes())?;
-    println!("✍️  wrote a package.json!");
-    Ok(())
-}
-
-pub fn get_crate_name(path: &str) -> Result<String, Error> {
-    Ok(read_cargo_toml(path)?.package.name)
-}
diff --git a/src/main.rs b/src/main.rs
index 14d5979..b430250 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,9 +1,9 @@
+extern crate failure;
 #[macro_use]
 extern crate quicli;
 extern crate wasm_pack;
 
-mod build;
-mod bindgen;
+use wasm_pack::{bindgen, build, manifest, readme};
 
 use quicli::prelude::*;
 
@@ -38,9 +38,11 @@ main!(|args: Cli, log_level: verbosity| match args.cmd {
         };
         build::rustup_add_wasm_target();
         build::cargo_build_wasm(&crate_path);
-        wasm_pack::write_package_json(&crate_path)?;
+        wasm_pack::create_pkg_dir(&crate_path)?;
+        manifest::write_package_json(&crate_path)?;
+        readme::copy_from_crate(&crate_path)?;
         bindgen::cargo_install_wasm_bindgen();
-        let name = wasm_pack::get_crate_name(&crate_path)?;
+        let name = manifest::get_crate_name(&crate_path)?;
         bindgen::wasm_bindgen_build(&crate_path, &name);
     }
     Command::Pack { .. } => {
diff --git a/src/manifest.rs b/src/manifest.rs
new file mode 100644
index 0000000..6a3352a
--- /dev/null
+++ b/src/manifest.rs
@@ -0,0 +1,82 @@
+use std::fs::File;
+use std::io::prelude::*;
+
+use failure::Error;
+use serde_json;
+use toml;
+
+#[derive(Deserialize)]
+struct CargoManifest {
+    package: CargoPackage,
+}
+
+#[derive(Deserialize)]
+struct CargoPackage {
+    name: String,
+    description: String,
+    version: String,
+    license: String,
+    repository: String,
+}
+
+#[derive(Serialize)]
+struct NpmPackage {
+    name: String,
+    description: String,
+    version: String,
+    license: String,
+    repository: Repository,
+    files: Vec<String>,
+}
+
+#[derive(Serialize)]
+struct Repository {
+    #[serde(rename = "type")]
+    ty: String,
+    url: String,
+}
+
+fn read_cargo_toml(path: &str) -> Result<CargoManifest, Error> {
+    let path_to_manifest = format!("{}/Cargo.toml", path);
+    println!("👩<200d>🍳  reading {}", path_to_manifest);
+    let mut cargo_file = File::open(path_to_manifest)?;
+    let mut cargo_contents = String::new();
+    cargo_file.read_to_string(&mut cargo_contents)?;
+
+    Ok(toml::from_str(&cargo_contents)?)
+}
+
+impl CargoManifest {
+    fn into_npm(self) -> NpmPackage {
+        let filename = self.package.name.replace("-", "_");
+        let js_file = format!("{}.js", filename);
+        let wasm_file = format!("{}_bg.wasm", filename);
+        NpmPackage {
+            name: self.package.name,
+            description: self.package.description,
+            version: self.package.version,
+            license: self.package.license,
+            repository: Repository {
+                ty: "git".to_string(),
+                url: self.package.repository,
+            },
+            files: vec![js_file, wasm_file],
+        }
+    }
+}
+
+/// Generate a package.json file inside in `./pkg`.
+pub fn write_package_json(path: &str) -> Result<(), Error> {
+    let path_to_pkg_file = format!("{}/pkg/package.json", path);
+    let mut pkg_file = File::create(path_to_pkg_file)?;
+    let crate_data = read_cargo_toml(path)?;
+    let npm_data = crate_data.into_npm();
+    let npm_json = serde_json::to_string(&npm_data)?;
+    pkg_file.write_all(npm_json.as_bytes())?;
+    println!("✍️  wrote a package.json!");
+    Ok(())
+}
+
+pub fn get_crate_name(path: &str) -> Result<String, Error> {
+    Ok(read_cargo_toml(path)?.package.name)
+}
diff --git a/src/readme.rs b/src/readme.rs
new file mode 100644
index 0000000..7f45162
--- /dev/null
+++ b/src/readme.rs
@@ -0,0 +1,10 @@
+use std::fs;
+use std::fs::File;
+use failure::Error;
+
+pub fn copy_from_crate(path: &str) -> Result<(), Error> {
+    let crate_readme_path = format!("{}/README.md", path);
+    let new_readme_path = format!("{}/pkg/README.md", path);
+    fs::copy(&crate_readme_path, &new_readme_path)?;
+    Ok(())
+}


Test patch:
diff --git a/tests/fixtures/package-json/package.json b/tests/fixtures/package-json/package.json
deleted file mode 100644
index 9f47620..0000000
--- a/tests/fixtures/package-json/package.json
+++ /dev/null
@@ -1,1 +0,0 @@
-{"name":"wasm-pack","description":"pack up the wasm and publish it to npm!","version":"0.1.0","license":"MIT/Apache-2.0","repository":{"type":"git","url":"https://github.com/ashleygwilliams/wasm-pack.git"},"files":["wasm_pack.js","wasm_pack_bg.wasm"]}
\ No newline at end of file
diff --git a/tests/manifest.rs b/tests/manifest.rs
new file mode 100644
index 0000000..8db99eb
--- /dev/null
+++ b/tests/manifest.rs
@@ -0,0 +1,38 @@
+extern crate wasm_pack;
+
+use std::fs;
+
+use wasm_pack::manifest;
+
+#[test]
+fn it_gets_the_crate_name_default_path() {
+    assert!(manifest::get_crate_name(".").is_ok());
+    assert_eq!(manifest::get_crate_name(".").unwrap(), "wasm-pack");
+}
+
+#[test]
+fn it_gets_the_crate_name_provided_path() {
+    assert!(manifest::get_crate_name("./examples/js-hello-world").is_ok());
+    assert_eq!(
+        manifest::get_crate_name("./examples/js-hello-world").unwrap(),
+        "js-hello-world"
+    );
+}
+
+#[test]
+fn it_creates_a_package_json_default_path() {
+    let path = ".".to_string();
+    wasm_pack::create_pkg_dir(&path).unwrap();
+    assert!(manifest::write_package_json(&path).is_ok());
+    let package_json_path = format!("{}/pkg/package.json", &path);
+    assert!(fs::metadata(package_json_path).is_ok());
+}
+
+#[test]
+fn it_creates_a_package_json_provided_path() {
+    let path = "./examples/js-hello-world".to_string();
+    wasm_pack::create_pkg_dir(&path).unwrap();
+    assert!(manifest::write_package_json(&path).is_ok());
+    let package_json_path = format!("{}/pkg/package.json", &path);
+    assert!(fs::metadata(package_json_path).is_ok());
+}
diff --git a/tests/readme.rs b/tests/readme.rs
new file mode 100644
index 0000000..783593a
--- /dev/null
+++ b/tests/readme.rs
@@ -0,0 +1,17 @@
+extern crate wasm_pack;
+
+use std::fs;
+
+use wasm_pack::readme;
+
+#[test]
+fn it_copies_a_readme_default_path() {
+    assert!(readme::copy_from_crate(".").is_ok());
+    assert!(fs::metadata("./pkg/README.md").is_ok());
+}
+
+#[test]
+fn it_creates_a_package_json_provided_path() {
+    assert!(readme::copy_from_crate("./examples/js-hello-world").is_ok());
+    assert!(fs::metadata("./examples/js-hello-world/pkg/README.md").is_ok());
+}
diff --git a/tests/wasm-pack.rs b/tests/wasm-pack.rs
deleted file mode 100644
index ada5fd0..0000000
--- a/tests/wasm-pack.rs
+++ /dev/null
@@ -1,32 +0,0 @@
-extern crate dir_diff;
-extern crate wasm_pack;
-
-#[test]
-fn it_gets_the_crate_name_default_path() {
-    assert!(wasm_pack::get_crate_name(".").is_ok());
-    assert_eq!(wasm_pack::get_crate_name(".").unwrap(), "wasm-pack");
-}
-
-#[test]
-fn it_gets_the_crate_name_provided_path() {
-    assert!(wasm_pack::get_crate_name("./examples/js-hello-world").is_ok());
-    assert_eq!(
-        wasm_pack::get_crate_name("./examples/js-hello-world").unwrap(),
-        "js-hello-world"
-    );
-}
-
-#[test]
-fn it_creates_a_package_json_default_path() {
-    assert!(wasm_pack::write_package_json(".").is_ok());
-    assert!(!dir_diff::is_different("./pkg", "./test/fixtures/package-json").unwrap());
-}
-
-#[test]
-fn it_creates_a_package_json_provided_path() {
-    assert!(wasm_pack::write_package_json("./examples/js-hello-world").is_ok());
-    assert!(!dir_diff::is_different(
-        "./examples/js-hello-world/pkg",
-        "./test/fixtures/package-json"
-    ).unwrap());
-}