fix pipeline

.gitea/workflows/build.yml

@@ -12,5 +12,7 @@ jobs:
         uses: https://github.com/cachix/install-nix-action@v23
         with:
           github_access_token: ${{ secrets.INPUT_GITHUB_ACCESS_TOKEN }}
+      - name: Stub data files
+        run: touch src/data/day{01..31}.txt
       - name: Build package
         run: nix build

src/day12.zig

@@ -0,0 +1,53 @@
+const std = @import("std");
+const util = @import("util.zig");
+const mem = std.mem;
+
+pub fn main() !void {
+    const input = @embedFile("data/day12.txt");
+    const sln = try solve(util.gpa, input);
+    std.debug.print("{d}\n", .{sln.a});
+    std.debug.print("{d}\n", .{sln.b});
+}
+
+const Solution = struct {
+    a: usize,
+    b: usize,
+};
+
+fn solve(alloc: mem.Allocator, input: []const u8) !Solution {
+    _ = alloc;
+
+    var it = util.splitLines(input);
+    while (it.next()) |line| {
+        if (line.len == 0) continue;
+
+        var lit = util.splitSpace(line);
+        const record = lit.next().?;
+        _ = record;
+        const groups = lit.next().?;
+        _ = groups;
+    }
+
+    return .{ .a = 0, .b = 0 };
+}
+
+test "silver" {
+    const input =
+        \\???.### 1,1,3
+        \\.??..??...?##. 1,1,3
+        \\?#?#?#?#?#?#?#? 1,3,1,6
+        \\????.#...#... 4,1,1
+        \\????.######..#####. 1,6,5
+        \\?###???????? 3,2,1
+    ;
+    const sln = try solve(std.testing.allocator, input);
+    try std.testing.expectEqual(@as(usize, 21), sln.a);
+}
+
+test "gold" {
+    const input =
+        \\
+    ;
+    const sln = try solve(std.testing.allocator, input);
+    try std.testing.expectEqual(@as(usize, 0), sln.b);
+}