Replace git current_branch to shadow-rs branch (#2935)

* update to shadow-rs 0.4. use easy

* update shadow-rs to 0.5

* fix version not used

* update

* update Cargo.lock

* update Cargo.lock

* fix wasm build error when use dependence git2
fix error link:https://dev.azure.com/nushell/nushell/_build/results?buildId=4858&view=logs&j=1a745d4c-b027-5f34-06d8-d6f256bfe9f9&t=a0a335cb-fa1f-5bbf-be01-1a90d6899e54

* remove code not used; fix warning by RUSTFLAGS="-D warnings" build error

* upgrade shadow-rs 0.5.2

* upgrade shadow-rs 0.5.7

make nushell reduce dependence crates smaller and  build fast.

* upgrade shadow-rs 0.5.8

fix when use api 'strip_prefix()' method in less than rust1.45.0 build failed

* use shadow-rs branch replace with current_branch method;
remove and reduce git dependencies.

* upgrade shadow-rs 0.5.12-pre,test build error with wasm

* upgrade Cargo.lock

* upgarde shadow-rs depencdence

* fix build error in wasm

* add clippy warning

Cargo.lock

@@ -3107,7 +3107,6 @@ dependencies = [
  "futures-util",
  "futures_codec",
  "getset",
- "git2",
  "glob",
  "heim",
  "htmlescape",
@@ -3211,7 +3210,6 @@ dependencies = [
  "futures-util",
  "futures_codec",
  "getset",
- "git2",
  "glob",
  "heim",
  "htmlescape",
@@ -5217,9 +5215,9 @@ dependencies = [
 
 [[package]]
 name = "shadow-rs"
-version = "0.5.8"
+version = "0.5.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "48d36234bd8117223aa622e2ab8aa530f4db4e48f651c2afd445cc3178b4ecdb"
+checksum = "0d5d44a3b9d42450685af2c83260ea5573430c47f011a9e26093d3839af74a31"
 dependencies = [
  "chrono",
  "git2",

Cargo.toml

@@ -65,7 +65,6 @@ nu-test-support = {version = "0.25.2", path = "./crates/nu-test-support"}
 [features]
 ctrlc-support = ["nu-cli/ctrlc", "nu-command/ctrlc"]
 directories-support = ["nu-cli/directories", "nu-cli/dirs", "nu-command/directories", "nu-command/dirs", "nu-data/directories", "nu-data/dirs", "nu-engine/dirs"]
-git-support = ["nu-cli/git2", "nu-command/git2"]
 ptree-support = ["nu-cli/ptree", "nu-command/ptree"]
 rich-benchmark = ["nu-cli/rich-benchmark", "nu-command/rich-benchmark"]
 rustyline-support = ["nu-cli/rustyline-support", "nu-command/rustyline-support"]
@@ -78,7 +77,6 @@ default = [
   "ps",
   "textview",
   "inc",
-  "git-support",
   "directories-support",
   "ctrlc-support",
   "which-support",

crates/nu-cli/Cargo.toml

@@ -54,7 +54,6 @@ futures = {version = "0.3.5", features = ["compat", "io-compat"]}
 futures-util = "0.3.8"
 futures_codec = "0.4.1"
 getset = "0.1.1"
-git2 = {version = "0.13.11", default_features = false, optional = true}
 glob = "0.3.0"
 heim = { version = "0.1.0-rc.1", optional = true }
 htmlescape = "0.3.1"
@@ -104,6 +103,7 @@ url = "2.1.1"
 uuid_crate = { package = "uuid", version = "0.8.1", features = ["v4"], optional = true }
 which = { version = "4.0.2", optional = true }
 zip = { version = "0.5.7", optional = true }
+shadow-rs = { version = "0.5", default-features = false, optional = true }
 
 [target.'cfg(unix)'.dependencies]
 umask = "1.0.0"
@@ -128,6 +128,7 @@ quickcheck = "0.9.2"
 quickcheck_macros = "0.9.1"
 
 [features]
+default = ["shadow-rs"]
 clipboard-cli = ["arboard"]
 rich-benchmark = ["heim"]
 rustyline-support = ["rustyline", "nu-engine/rustyline-support"]

crates/nu-cli/src/cli.rs

@@ -163,17 +163,9 @@ pub async fn cli(mut context: EvaluationContext) -> Result<(), Box<dyn Error>> {
                 let (prompt_block, err) = nu_parser::parse(&prompt_line, 0, &context.scope);
 
                 if err.is_some() {
-                    use crate::git::current_branch;
                     context.scope.exit_scope();
 
-                    format!(
+                    format!("\x1b[32m{}{}\x1b[m> ", cwd, current_branch())
-                        "\x1b[32m{}{}\x1b[m> ",
-                        cwd,
-                        match current_branch() {
-                            Some(s) => format!("({})", s),
-                            None => "".to_string(),
-                        }
-                    )
                 } else {
                     // let env = context.get_env();
 
@@ -209,15 +201,7 @@ pub async fn cli(mut context: EvaluationContext) -> Result<(), Box<dyn Error>> {
                     }
                 }
             } else {
-                use crate::git::current_branch;
+                format!("\x1b[32m{}{}\x1b[m> ", cwd, current_branch())
-                format!(
-                    "\x1b[32m{}{}\x1b[m> ",
-                    cwd,
-                    match current_branch() {
-                        Some(s) => format!("({})", s),
-                        None => "".to_string(),
-                    }
-                )
             }
         };
 
@@ -371,7 +355,7 @@ async fn run_startup_commands(
             _ => {
                 return Err(ShellError::untagged_runtime_error(
                     "expected a table of pipeline strings as startup commands",
-                ))
+                ));
             }
         }
     }
@@ -405,6 +389,22 @@ pub async fn parse_and_eval(line: &str, ctx: &EvaluationContext) -> Result<Strin
     result?.collect_string(Tag::unknown()).await.map(|x| x.item)
 }
 
+#[allow(dead_code)]
+fn current_branch() -> String {
+    #[cfg(feature = "shadow-rs")]
+    {
+        Some(shadow_rs::branch())
+            .map(|x| x.trim().to_string())
+            .filter(|x| !x.is_empty())
+            .map(|x| format!("({})", x))
+            .unwrap_or_default()
+    }
+    #[cfg(not(feature = "shadow-rs"))]
+    {
+        "".to_string()
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use nu_engine::basic_evaluation_context;

crates/nu-cli/src/git.rs

@@ -1,26 +0,0 @@
-pub fn current_branch() -> Option<String> {
-    #[cfg(feature = "git2")]
-    {
-        use git2::{Repository, RepositoryOpenFlags};
-        use std::ffi::OsString;
-
-        let v: Vec<OsString> = vec![];
-        match Repository::open_ext(".", RepositoryOpenFlags::empty(), v) {
-            Ok(repo) => {
-                let r = repo.head();
-                match r {
-                    Ok(r) => match r.shorthand() {
-                        Some(s) => Some(s.to_string()),
-                        None => None,
-                    },
-                    _ => None,
-                }
-            }
-            _ => None,
-        }
-    }
-    #[cfg(not(feature = "git2"))]
-    {
-        None
-    }
-}

crates/nu-cli/src/lib.rs

@@ -19,8 +19,6 @@ mod completion;
 mod env;
 mod format;
 #[cfg(feature = "rustyline-support")]
-mod git;
-#[cfg(feature = "rustyline-support")]
 mod keybinding;
 mod line_editor;
 mod shell;

crates/nu-command/Cargo.toml

@@ -53,7 +53,6 @@ futures = {version = "0.3.5", features = ["compat", "io-compat"]}
 futures-util = "0.3.8"
 futures_codec = "0.4.1"
 getset = "0.1.1"
-git2 = {version = "0.13.11", default_features = false, optional = true}
 glob = "0.3.0"
 heim = { version = "0.1.0-rc.1", optional = true }
 htmlescape = "0.3.1"

crates/nu-command/src/commands/version.rs

@@ -165,11 +165,6 @@ fn features_enabled() -> Vec<String> {
         names.push("directories".to_string());
     }
 
-    #[cfg(feature = "git2")]
-    {
-        names.push("git".to_string());
-    }
-
     #[cfg(feature = "ptree")]
     {
         names.push("ptree".to_string());

docs/commands/to-toml.md

@@ -58,7 +58,6 @@ dunce = "1.0.0"
 futures-sink-preview = "0.3.0-alpha.16"
 futures_codec = "0.2.2"
 getset = "0.0.7"
-git2 = "0.8.0"
 itertools = "0.8.0"
 lalrpop-util = "0.17.0"
 language-reporting = "0.3.0"

tests/fixtures/formats/cargo_sample.toml

@@ -47,7 +47,6 @@ directories = "2.0.2"
 toml = "0.5.1"
 toml-query = "0.9.0"
 clap = "2.33.0"
-git2 = "0.8.0"
 
 [dependencies.pancurses]
 version = "0.16"