Update rustfmt command line interface (#4006)

Author: topecongiro

Diff for: Cargo.lock

@@ -33,25 +33,24 @@ test = false
 
 [features]
 default = ["cargo-fmt", "rustfmt-format-diff"]
-cargo-fmt = []
-rustfmt-format-diff = []
+cargo-fmt = ["cargo_metadata"]
+rustfmt-format-diff = ["regex", "serde", "serde_json"]
 generic-simd = ["rustfmt_lib/generic-simd"]
 
 [dependencies]
-ansi_term = "0.12"
 anyhow = "1.0"
-cargo_metadata = "0.9"
 env_logger = "0.7"
-getopts = "0.2"
 log = "0.4"
-regex = "1.0"
-serde = "1.0"
-serde_json = "1.0"
 structopt = "0.3"
 term = "0.6"
 thiserror = "1.0"
 
-rustfmt_lib = { path = "rustfmt-core/rustfmt-lib", version = "1.0" }
+cargo_metadata = { version = "0.9", optional = true }
+regex = { version = "1.0", optional = true }
+serde = { version = "1.0", optional = true }
+serde_json = { version = "1.0", optional = true }
+
+rustfmt_lib = { path = "rustfmt-core/rustfmt-lib", version = "2.0.0-rc.1" }
 
 [dev-dependencies]
 lazy_static = "1.0"

Diff for: Cargo.toml

@@ -1881,14 +1881,6 @@ specific version of rustfmt is used in your CI, use this option.
 - **Possible values**: any published version (e.g. `"0.3.8"`)
 - **Stable**: No (tracking issue: #3386)
 
-## `skip_children` (DEPRECATED #3587)
-
-Don't reformat out of line modules
-
-- **Default value**: `false`
-- **Possible values**: `true`, `false`
-- **Stable**: No (tracking issue: #3389)
-
 ## `space_after_colon`
 
 Leave a space after the colon.

Diff for: Configurations.md

@@ -41,7 +41,7 @@ structopt = "0.3"
 term = "0.6"
 thiserror = "1.0"
 
-rustfmt_lib = { path = "../rustfmt-lib", version = "1.0" }
+rustfmt_lib = { path = "../rustfmt-lib", version = "2.0.0-rc.1" }
 
 [dev-dependencies]
 lazy_static = "1.0"

Diff for: rustfmt-core/rustfmt-bin/Cargo.toml

@@ -12,10 +12,13 @@ fn main() {
     }
 
     println!("cargo:rerun-if-env-changed=CFG_RELEASE_CHANNEL");
+    if option_env!("CFG_RELEASE_CHANNEL").map_or(true, |c| c == "nightly" || c == "dev") {
+        println!("cargo:rustc-cfg=nightly");
+    }
 
     let out_dir = PathBuf::from(env::var_os("OUT_DIR").unwrap());
 
-    File::create(out_dir.join("commit-info.txt"))
+    File::create(out_dir.join("version-info.txt"))
         .unwrap()
         .write_all(commit_info().as_bytes())
         .unwrap();
@@ -25,7 +28,10 @@ fn main() {
 // (git not installed or if this is not a git repository) just return an empty string.
 fn commit_info() -> String {
     match (channel(), commit_hash(), commit_date()) {
-        (channel, Some(hash), Some(date)) => format!("{} ({} {})", channel, hash.trim_end(), date),
+        (channel, Some(hash), Some(date)) => {
+            format!("{}-{} ({} {})", option_env!("CARGO_PKG_VERSION")
+                .unwrap_or("unknown"), channel, hash.trim_end(), date)
+        },
         _ => String::new(),
     }
 }