feat: Add zig codezig

This is playground to test zig and libgit2.

5 files changed, 164 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..dca1103
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+zig-out/
+.zig-cache/
diff --git a/build.zig b/build.zig
new file mode 100644
index 0000000..5e292dc
--- /dev/null
+++ b/build.zig
@@ -0,0 +1,63 @@
+const std = @import("std");
+
+pub fn build(b: *std.Build) void {
+    const target = b.standardTargetOptions(.{});
+
+    const optimize = b.standardOptimizeOption(.{});
+
+    const lib = b.addStaticLibrary(.{
+        .name = "cerrado",
+
+        .root_source_file = b.path("src/root.zig"),
+        .target = target,
+        .optimize = optimize,
+    });
+
+    b.installArtifact(lib);
+
+    const exe = b.addExecutable(.{
+        .name = "cerrado",
+        .root_source_file = b.path("src/main.zig"),
+        .target = target,
+        .optimize = optimize,
+        .link_libc = true,
+    });
+
+    exe.linkSystemLibrary("git2");
+
+    b.installArtifact(exe);
+
+    const run_cmd = b.addRunArtifact(exe);
+
+    run_cmd.step.dependOn(b.getInstallStep());
+
+    if (b.args) |args| {
+        run_cmd.addArgs(args);
+    }
+
+    const run_step = b.step("run", "Run the app");
+    run_step.dependOn(&run_cmd.step);
+
+    const lib_unit_tests = b.addTest(.{
+        .root_source_file = b.path("src/root.zig"),
+        .target = target,
+        .optimize = optimize,
+        .link_libc = true,
+    });
+
+    lib_unit_tests.linkSystemLibrary("git2");
+
+    const run_lib_unit_tests = b.addRunArtifact(lib_unit_tests);
+
+    const exe_unit_tests = b.addTest(.{
+        .root_source_file = b.path("src/main.zig"),
+        .target = target,
+        .optimize = optimize,
+    });
+
+    const run_exe_unit_tests = b.addRunArtifact(exe_unit_tests);
+
+    const test_step = b.step("test", "Run unit tests");
+    test_step.dependOn(&run_lib_unit_tests.step);
+    test_step.dependOn(&run_exe_unit_tests.step);
+}
diff --git a/build.zig.zon b/build.zig.zon
new file mode 100644
index 0000000..5b16a74
--- /dev/null
+++ b/build.zig.zon
@@ -0,0 +1,10 @@
+.{
+    .name = "cerrado",
+    .version = "0.0.0",
+    .dependencies = .{},
+    .paths = .{
+        "build.zig",
+        "build.zig.zon",
+        "src",
+    },
+}
diff --git a/src/main.zig b/src/main.zig
new file mode 100644
index 0000000..c8a3f67
--- /dev/null
+++ b/src/main.zig
@@ -0,0 +1,24 @@
+const std = @import("std");
+
+pub fn main() !void {
+    // Prints to stderr (it's a shortcut based on `std.io.getStdErr()`)
+    std.debug.print("All your {s} are belong to us.\n", .{"codebase"});
+
+    // stdout is for the actual output of your application, for example if you
+    // are implementing gzip, then only the compressed bytes should be sent to
+    // stdout, not any debugging messages.
+    const stdout_file = std.io.getStdOut().writer();
+    var bw = std.io.bufferedWriter(stdout_file);
+    const stdout = bw.writer();
+
+    try stdout.print("Run `zig build test` to run the tests.\n", .{});
+
+    try bw.flush(); // don't forget to flush!
+}
+
+test "simple test" {
+    var list = std.ArrayList(i32).init(std.testing.allocator);
+    defer list.deinit(); // try commenting this out and see if zig detects the memory leak!
+    try list.append(42);
+    try std.testing.expectEqual(@as(i32, 42), list.pop());
+}
diff --git a/src/root.zig b/src/root.zig
new file mode 100644
index 0000000..73222be
--- /dev/null
+++ b/src/root.zig
@@ -0,0 +1,65 @@
+const std = @import("std");
+const testing = std.testing;
+const Allocator = std.mem.Allocator;
+
+const git = @cImport({
+    @cInclude("git2.h");
+});
+
+const GitError = error{
+    InitError,
+    DeinitError,
+    OpenError,
+};
+
+pub fn initGit() GitError!void {
+    const code = git.git_libgit2_init();
+    if (code < 0) {
+        return GitError.InitError;
+    }
+}
+
+pub fn deInitGit() !void {
+    const code = git.git_libgit2_shutdown();
+    if (code < 0) {
+        return GitError.DeinitError;
+    }
+}
+
+pub const Repository = struct {
+    allocator: Allocator = undefined,
+    repository: ?*git.git_repository = null,
+
+    pub fn init(alloc: Allocator) !Repository {
+        return Repository{
+            .allocator = alloc,
+        };
+    }
+
+    pub fn open(self: Repository, path: []const u8) GitError!void {
+        const code = git.git_repository_open(@constCast(&self.repository), path.ptr);
+        if (code < 0) {
+            return GitError.OpenError;
+        }
+    }
+
+    pub fn deinit(self: Repository) !void {
+        if (self.repository) |repo| {
+            git.git_repository_free(repo);
+        }
+    }
+};
+
+test "init deinit" {
+    try initGit();
+    try deInitGit();
+}
+
+test "open repository" {
+    try initGit();
+
+    var repository = try Repository.init(std.testing.allocator);
+    try repository.open(".");
+
+    try deInitGit();
+}