feat: start git client module

build.zig

@@ -420,6 +420,15 @@ pub fn build_exe(
         },
     });
 
+    const git_mod = b.createModule(.{
+        .root_source_file = b.path("src/git.zig"),
+        .imports = &.{
+            .{ .name = "thespian", .module = thespian_mod },
+            .{ .name = "cbor", .module = cbor_mod },
+            .{ .name = "shell", .module = shell_mod },
+        },
+    });
+
     const ripgrep_mod = b.createModule(.{
         .root_source_file = b.path("src/ripgrep.zig"),
         .imports = &.{
@@ -486,6 +495,7 @@ pub fn build_exe(
             .{ .name = "Buffer", .module = Buffer_mod },
             .{ .name = "keybind", .module = keybind_mod },
             .{ .name = "shell", .module = shell_mod },
+            .{ .name = "git", .module = git_mod },
             .{ .name = "ripgrep", .module = ripgrep_mod },
             .{ .name = "theme", .module = themes_dep.module("theme") },
             .{ .name = "themes", .module = themes_dep.module("themes") },

src/git.zig

@@ -0,0 +1,21 @@
+const std = @import("std");
+const tp = @import("thespian");
+const shell = @import("shell");
+
+const git_binary = "git";
+
+pub fn get_current_branch(allocator: std.mem.Allocator) !void {
+    const git_current_branch_cmd = tp.message.fmt(.{ git_binary, "rev-parse", "--abbrev-ref", "HEAD" });
+    const handlers = struct {
+        fn out(_: usize, parent: tp.pid_ref, _: []const u8, output: []const u8) void {
+            var it = std.mem.splitScalar(u8, output, '\n');
+            while (it.next()) |line| if (line.len > 0)
+                parent.send(.{ "git", "current_branch", line }) catch {};
+        }
+    };
+    try shell.execute(allocator, git_current_branch_cmd, .{
+        .out = handlers.out,
+        .err = shell.log_err_handler,
+        .exit = shell.log_exit_err_handler,
+    });
+}

src/tui/mainview.zig

@@ -2,6 +2,7 @@ const std = @import("std");
 const tp = @import("thespian");
 const cbor = @import("cbor");
 const tracy = @import("tracy");
+const git = @import("git");
 const ripgrep = @import("ripgrep");
 const root = @import("root");
 const location_history = @import("location_history");
@@ -827,6 +828,11 @@ const cmds = struct {
     }
     pub const find_in_files_query_meta: Meta = .{ .arguments = &.{.string} };
 
+    pub fn git_branch(self: *Self, _: Ctx) Result {
+        try git.get_current_branch(self.allocator);
+    }
+    pub const git_branch_meta: Meta = .{ .description = "Get the current git branch" };
+
     pub fn shell_execute_log(self: *Self, ctx: Ctx) Result {
         if (!try ctx.args.match(.{ tp.string, tp.more }))
             return error.InvalidShellArgument;