系统平台信息加载、配置文件路径加载

.gitignore

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+zig-cache
+zig-out

build.zig

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+const std = @import("std");
+
+// Although this function looks imperative, note that its job is to
+// declaratively construct a build graph that will be executed by an external
+// runner.
+pub fn build(b: *std.Build) void {
+    // Standard target options allows the person running `zig build` to choose
+    // what target to build for. Here we do not override the defaults, which
+    // means any target is allowed, and the default is native. Other options
+    // for restricting supported target set are available.
+    const target = b.standardTargetOptions(.{});
+
+    // Standard optimization options allow the person running `zig build` to select
+    // between Debug, ReleaseSafe, ReleaseFast, and ReleaseSmall. Here we do not
+    // set a preferred release mode, allowing the user to decide how to optimize.
+    const optimize = b.standardOptimizeOption(.{});
+
+    const exe = b.addExecutable(.{
+        .name = "igs",
+        .root_source_file = b.path("src/main.zig"),
+        .target = target,
+        .optimize = optimize,
+    });
+
+    // This declares intent for the executable to be installed into the
+    // standard location when the user invokes the "install" step (the default
+    // step when running `zig build`).
+    b.installArtifact(exe);
+
+    // This *creates* a Run step in the build graph, to be executed when another
+    // step is evaluated that depends on it. The next line below will establish
+    // such a dependency.
+    const run_cmd = b.addRunArtifact(exe);
+
+    // By making the run step depend on the install step, it will be run from the
+    // installation directory rather than directly from within the cache directory.
+    // This is not necessary, however, if the application depends on other installed
+    // files, this ensures they will be present and in the expected location.
+    run_cmd.step.dependOn(b.getInstallStep());
+
+    // This allows the user to pass arguments to the application in the build
+    // command itself, like this: `zig build run -- arg1 arg2 etc`
+    if (b.args) |args| {
+        run_cmd.addArgs(args);
+    }
+
+    // This creates a build step. It will be visible in the `zig build --help` menu,
+    // and can be selected like this: `zig build run`
+    // This will evaluate the `run` step rather than the default, which is "install".
+    const run_step = b.step("igs", "Run the app");
+    run_step.dependOn(&run_cmd.step);
+}

build.zig.zon

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+.{
+    .name = "IntraGate",
+    .version = "0.0.0",
+    .dependencies = .{},
+
+    .paths = .{
+        "",
+        //"build.zig",
+        //"build.zig.zon",
+        //"src",
+        //"LICENSE",
+        //"README.md",
+    },
+}

doc/igs_dev.md

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+# 服务端架构设计(igs)
+
+## 系统概述
+
+服务端(igs)负责管理公网端口映射，处理来自客户端(igc)与用户的连接和请求。
+
+## 组件设计
+
+### 端口管理器
+
+* 功能
+
+  负责公网端口的分配与回收，维护端口映射表。
+
+* 实现
+
+  

src/config_manager.zig

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+const std = @import("std");
+const Lua = @import("utils/lua_util.zig").Lua;
+const Platform = @import("utils/platform_util.zig");
+const Allocator = std.mem.Allocator;
+
+pub const ConfigOption = struct { url: []const u8 = "intra.lua" };
+
+/// 配置文件 - 管理器
+pub const ConfigManager = struct {
+    allocator: *const Allocator,
+    opt: ConfigOption,
+
+    /// 初始化
+    pub fn init(allocator: *const Allocator, opt: ConfigOption) ConfigManager {
+        return ConfigManager{ .allocator = allocator, .opt = opt };
+    }
+
+    /// 加载配置文件
+    pub fn load_config(self: *ConfigManager) !void {
+        const platform = Platform.getPlatformInfo();
+        const concat_path = try std.mem.concat(self.allocator.*, u8, &[2][]const u8{ platform.home, self.opt.url });
+        defer self.allocator.free(concat_path);
+        self.opt.url = concat_path;
+        std.debug.print("load config from {s}\n", .{self.opt.url});
+    }
+};

src/main.zig

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+const std = @import("std");
+const config = @import("config_manager.zig");
+
+pub fn main() !void {
+    // 通用分配器
+    var gpa = std.heap.GeneralPurposeAllocator(.{}){};
+    const allocator = gpa.allocator();
+
+    // 加载配置文件
+    var config_manager = config.ConfigManager.init(&allocator, .{});
+    try config_manager.load_config();
+}

src/utils/lua_util.zig

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+const std = @import("std");
+const ziglua = @import("ziglua");
+const zLua = ziglua.Lua;
+const LuaType = ziglua.LuaType;
+const Allocator = std.mem.Allocator;
+
+pub const Lua = struct {
+    allocator: *const Allocator,
+    url: [:0]const u8,
+    lua: *ziglua.Lua,
+
+    /// 初始化Lua
+    pub fn init(allocator: *const Allocator, url: [:0]const u8) !Lua {
+        const lua = try ziglua.Lua.init(allocator);
+        return Lua{
+            .allocator = allocator,
+            .url = url,
+            .lua = lua,
+        };
+    }
+
+    /// 析构
+    pub fn deinit(self: *Lua) void {
+        self.allocator.free(self.url);
+        self.lua.deinit();
+    }
+
+    /// 加载脚本
+    pub fn loadScript(self: *Lua) !void {
+        try self.lua.loadFile(self.url, .text);
+        try self.lua.protectedCall(0, 0, 0);
+    }
+
+    /// 获取全局变量的值
+    pub fn getGlobalValue(self: *Lua, comptime T: type, index: i32, var_name: []const u8) !void {
+        const fmt_var_name = try std.fmt.allocPrintZ(self.allocator.*, "{s}", .{var_name});
+        // 根据名称获取到全局变量，将其压入栈顶
+        const v_type = try self.lua.getGlobal(fmt_var_name);
+        defer {
+            _ = self.allocator.free(fmt_var_name);
+            _ = self.lua.pop(1);
+        }
+        // 判断是不是表数据结构
+        if (v_type == LuaType.table) {
+            std.debug.print("是表\n", .{});
+        } else {
+            const a = try self.getValue(T, index);
+            std.debug.print("{any}\n", .{a});
+        }
+    }
+
+    fn getValue(self: *Lua, comptime T: type, index: i32) !T {
+        return switch (T) {
+            i64 => try self.lua.toInteger(index),
+            else => unreachable,
+        };
+    }
+};

src/utils/platform_util.zig

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+const std = @import("std");
+const builtin = @import("builtin");
+const Allocator = std.mem.Allocator;
+
+const Os = enum { windows, linux, other, unknown };
+const Platform = struct {
+    os: Os = undefined,
+    home: []const u8 = undefined,
+};
+
+var platform_info: ?Platform = null;
+
+pub fn getPlatformInfo() Platform {
+    if (platform_info) |info| {
+        return info;
+    } else {
+        platform_info = initPlatformInfo() catch |err| {
+            std.debug.print("获取系统信息失败：{any}\n", .{err});
+            return Platform{ .os = .unknown };
+        };
+        return platform_info.?;
+    }
+}
+
+fn initPlatformInfo() !Platform {
+    var gpa = std.heap.GeneralPurposeAllocator(.{}){};
+    const allocator = gpa.allocator();
+
+    const env_map = try std.process.getEnvMap(allocator);
+    var user_profile: []const u8 = undefined;
+    var os: Os = undefined;
+    if (builtin.os.tag == .windows) {
+        user_profile = env_map.get("USERPROFILE").?;
+        os = .windows;
+    } else if (builtin.os.tag == .linux) {
+        user_profile = env_map.get("HOME").?;
+        os = .linux;
+    } else {
+        user_profile = env_map.get("HOME").?;
+        os = .other;
+    }
+    return Platform{
+        .os = os,
+        .home = user_profile,
+    };
+}