Add git branch to prompt

Cargo.lock

@@ -400,6 +400,20 @@ dependencies = [
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 ]
 
+[[package]]
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+ "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
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+
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@@ -822,6 +836,20 @@ dependencies = [
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@@ -840,6 +868,16 @@ name = "ident_case"
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 source = "registry+https://github.com/rust-lang/crates.io-index"
 
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@@ -935,6 +973,44 @@ name = "libc"
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@@ -990,6 +1066,11 @@ name = "maplit"
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+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
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@@ -1088,6 +1169,7 @@ dependencies = [
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+ "git2 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
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@@ -1213,6 +1295,23 @@ dependencies = [
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+[[package]]
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@@ -1291,6 +1390,11 @@ dependencies = [
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+[[package]]
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@@ -1974,6 +2078,22 @@ name = "ucd-util"
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@@ -1997,6 +2117,16 @@ dependencies = [
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@@ -2007,6 +2137,11 @@ name = "utf8parse"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+
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+"checksum vcpkg 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)" = "def296d3eb3b12371b2c7d0e83bfe1403e4db2d7a0bba324a12b21c4ee13143d"
 "checksum vec_map 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "05c78687fb1a80548ae3250346c3db86a80a7cdd77bda190189f2d0a0987c81a"
 "checksum version_check 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "914b1a6776c4c929a602fafd8bc742e06365d4bcbe48c30f9cca5824f70dc9dd"
 "checksum void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6a02e4885ed3bc0f2de90ea6dd45ebcbb66dacffe03547fadbb0eeae2770887d"

Cargo.toml

@@ -48,6 +48,7 @@ app_dirs = "1.2.1"
 toml = "0.5.1"
 toml-query = "0.9.0"
 clap = "2.33.0"
+git2 = "0.8.0"
 
 [dependencies.pancurses]
 version = "0.16"

src/cli.rs

@@ -11,6 +11,7 @@ crate use crate::format::{EntriesListView, GenericView};
 use crate::object::Value;
 use crate::parser::{ParsedCommand, Pipeline};
 use crate::stream::empty_stream;
+use crate::git::current_branch;
 
 use log::debug;
 use rustyline::error::ReadlineError;
@@ -83,8 +84,12 @@ pub async fn cli() -> Result<(), Box<Error>> {
 
     loop {
         let readline = rl.readline(&format!(
-            "{}> ",
+            "{}{}> ",
-            context.env.lock().unwrap().cwd().display().to_string()
+            context.env.lock().unwrap().cwd().display().to_string(),
+            match current_branch() {
+                Some(s) => format!("({})", s),
+                None => "".to_string()
+            }
         ));
 
         match process_line(readline, &mut context).await {

src/git.rs

@@ -0,0 +1,19 @@
+use git2::Repository;
+
+pub fn current_branch() -> Option<String> {
+    match Repository::open(".") {
+        Ok(repo) => {
+            let r = repo.head();
+            match r {
+                Ok(r) => {
+                    match r.shorthand() {
+                        Some(s) => Some(s.to_string()),
+                        None => None,
+                    }
+                },
+                _ => None
+            }
+        },
+        _ => None
+    }
+}

src/main.rs

@@ -11,6 +11,7 @@ mod env;
 mod errors;
 mod evaluate;
 mod format;
+mod git;
 mod object;
 mod parser;
 mod prelude;