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javascript for 🐜's, a tiny runtime with big ambitions antjs.org
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Zig
1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071const std = @import("std");const root = @import("root.zig");
const ListCallback = *const fn ([*:0]const u8, [*:0]const u8, ?*anyopaque) callconv(.c) void;
const PkgDeps = struct { deps: ?std.json.ObjectMap, dev_deps: ?std.json.ObjectMap, nm_path: []const u8, arena: std.mem.Allocator, parsed: std.json.Parsed(std.json.Value), pub fn deinit(self: *PkgDeps) void { self.parsed.deinit(); } pub fn count(self: *const PkgDeps) u32 { var c: u32 = 0; if (self.deps) |d| c += @intCast(d.count()); if (self.dev_deps) |d| c += @intCast(d.count()); return c; }};
fn emitPkg(pd: *PkgDeps, name: []const u8, cb: ListCallback, ud: ?*anyopaque) void { const pkg_json = std.fmt.allocPrint(pd.arena, "{s}/{s}/package.json", .{pd.nm_path, name}) catch return; const content = std.fs.cwd().readFileAlloc(pd.arena, pkg_json, 256 * 1024) catch return; const parsed = std.json.parseFromSlice(std.json.Value, pd.arena, content, .{}) catch return; defer parsed.deinit(); const ver = if (parsed.value.object.get("version")) |v| if (v == .string) v.string else "?" else "?"; cb(pd.arena.dupeZ(u8, name) catch return, pd.arena.dupeZ(u8, ver) catch return, ud);}
pub fn get_dependencies(ctx: ?*root.PkgContext, base_path: ?[]const u8, include_dev: bool) ?PkgDeps { const c = ctx orelse return null; _ = c.arena_state.reset(.retain_capacity); const arena = c.arena_state.allocator(); const pkg_json_path = if (base_path) |bp| std.fmt.allocPrint(arena, "{s}/package.json", .{bp}) catch return null else arena.dupe(u8, "package.json") catch return null; const nm_path = if (base_path) |bp| std.fmt.allocPrint(arena, "{s}/node_modules", .{bp}) catch return null else arena.dupe(u8, "node_modules") catch return null; const content = std.fs.cwd().readFileAlloc(arena, pkg_json_path, 1024 * 1024) catch return null; const parsed = std.json.parseFromSlice(std.json.Value, arena, content, .{}) catch return null; const deps_val = parsed.value.object.get("dependencies"); const deps = if (deps_val) |v| if (v == .object) v.object else null else null; const dev_deps = if (include_dev) blk: { const dev_val = parsed.value.object.get("devDependencies"); break :blk if (dev_val) |v| if (v == .object) v.object else null else null; } else null; if (deps == null and dev_deps == null) { var p = parsed; p.deinit(); return null; } return .{ .deps = deps, .dev_deps = dev_deps, .nm_path = nm_path, .arena = arena, .parsed = parsed };}
pub fn list_dependencies(pd: *PkgDeps, cb: ListCallback, ud: ?*anyopaque) void { if (pd.deps) |d| for (d.keys()) |n| emitPkg(pd, n, cb, ud); if (pd.dev_deps) |d| for (d.keys()) |n| emitPkg(pd, n, cb, ud);}