wip

src/util.zig

@@ -35,3 +35,31 @@ pub fn splitLines(buffer: []const u8) mem.SplitIterator(u8, .scalar) {
 pub fn splitSpace(buffer: []const u8) mem.SplitIterator(u8, .scalar) {
     return split(buffer, ' ');
 }
+
+pub fn allocGrid(comptime T: type, alloc: mem.Allocator, w: usize, h: usize, init: T) ![][]T {
+    var grid = try alloc.alloc([]T, h);
+    for (0..h) |i| {
+        grid[i] = try alloc.alloc(T, w);
+        @memset(grid[i], init);
+    }
+    return grid;
+}
+
+pub fn toGridOwned(alloc: mem.Allocator, buffer: []const u8, sep: u8) ![][]u8 {
+    if (buffer.len == 0) return error.Empty;
+    const w = mem.indexOfScalar(u8, buffer, sep) orelse unreachable;
+    var h = mem.count(u8, buffer, &[_]u8{sep});
+    if (buffer[buffer.len - 1] != sep) h += 1;
+
+    var grid = try alloc.alloc([]u8, h);
+
+    var it = split(buffer, sep);
+    var i: usize = 0;
+    while (it.next()) |line| {
+        grid[i] = try alloc.alloc(u8, w);
+        @memcpy(grid[i], line);
+        i += 1;
+    }
+
+    return grid;
+}