From 77ae99d8fff5ed9c4c7b95b3ade1d80529b3a6b0 Mon Sep 17 00:00:00 2001
From: Meghan <hello@nektro.net>
Date: Sat, 14 Nov 2020 02:13:18 -0800
Subject: [PATCH] zig: add cmd_init

---
 src/cmd_init.zig | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 src/main.zig     |  1 +
 2 files changed, 47 insertions(+)
 create mode 100644 src/cmd_init.zig

diff --git a/src/cmd_init.zig b/src/cmd_init.zig
new file mode 100644
index 0000000000000000000000000000000000000000..a4061e50e765c9b8833a20029059667bab18f2a1
--- /dev/null
+++ b/src/cmd_init.zig
@@ -0,0 +1,46 @@
+const std = @import("std");
+const gpa = std.heap.c_allocator;
+
+const u = @import("./util/index.zig");
+
+//
+//
+
+pub fn execute(args: [][]u8) !void {
+    const name = try detect_pkgname(u.try_index([]const u8, args, 0, ""));
+    const mainf = try detct_mainfile(u.try_index([]const u8, args, 1, ""));
+
+    const file = try std.fs.cwd().createFile("./zig.mod", .{});
+    defer file.close();
+
+    const fwriter = file.writer();
+    try fwriter.print("name: {}\n", .{name});
+    try fwriter.print("main: {}\n", .{mainf});
+    try fwriter.print("dependencies:\n", .{});
+
+    u.print("Initialized a new package named {} with entry point {}", .{name, mainf});
+}
+
+fn detect_pkgname(def: []const u8) ![]const u8 {
+    if (def.len > 0) {
+        return def;
+    }
+    const dpath = try std.fs.realpathAlloc(gpa, "./");
+    const split = try u.split(dpath, "/");
+    var name = split[split.len-1];
+    name = u.trim_prefix(name, "zig-");
+    std.debug.assert(name.len > 0);
+    return name;
+}
+
+fn detct_mainfile(def: []const u8) ![]const u8 {
+    if (def.len > 0) {
+        if (u.does_file_exist(def)) {
+            if (std.mem.endsWith(u8, def, ".zig")) {
+                return def;
+            }
+        }
+    }
+    std.debug.assert(u.does_file_exist("./src/main.zig"));
+    return "src/main.zig";
+}
diff --git a/src/main.zig b/src/main.zig
index b0c9c13357a6095ab34df265d09606c94dd3e3de..ce257cc8a8db128bf7e085af1f89ad1deeda0d0e 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -7,6 +7,7 @@ const u = @import("./util/index.zig");
 //
 
 const commands = struct {
+    const init = @import("./cmd_init.zig");
 };
 
 pub fn main() !void {
-- 
2.54.0