Returns the [Square] at the given [Pos].

Whether this is [Square::Black].

Whether this is not a black square, i.e. either a [Square::Empty] or [Square::Letter].

Take the next `n`` bytes.

The height of this grid.

The width of this grid.

Moves the cursor to the start of the next word after the current one that is in the same direction as the cursor. If we are already on the last `Acros

Turns a NUL-terminated string into a standard String. Uses UTF-8 first, and then ISO-8859-1 if that fails.

Determines the position of the start of the word that contains the cursor, and is in the same direction as the cursor.

Returns a reference to the current puzzle grid.

Parses a C-style NUL-terminated string, including the NUL byte. In this function, we return just the raw bytes as they appear in the file. Converting

Consume the next two bytes and return them as a `u16`, interpreted as little-endian.

An iterator over all the positions of this grid, from left to right and top to bottom.

The identifier of the clue for the currently selected word.

Whether the given position is the start of an Across entry.

Whether the given position is the start of a Down entry.

Returns the square immediately below the given position, or `Square::Black` if the given position is on the bottom edge of the grid.

Sets the current square to [Empty](Square::Empty).

Returns the square immediately to the left of the given position, or `Square::Black` if the given position is on the left edge of the grid.

Consume and return the next byte, or return None if that can't be done.

Returns the square immediately to the right of the given position, or `Square::Black` if the given position is on the right edge of the grid.

The size of this grid, expressed as (width, height).

Returns the square immediately above the given position, or `Square::Black` if the given position is on the top edge of the grid.

Writes the given letter to the current square.

Moves the cursor to the next word in the puzzle.

Moves the cursor back one square, if possible. That is, one square to the left if the current cursor direction is Across, and one square up, if the cu

Returns a sorted list of all the clues for the given [Direction].

The identifier of the clue for the word that *would* be selected if the user were to swap the cursor direction.

Reads the crossterm events and updates the state of [`App`].

Whether this grid is fully filled in -- that is, has no `Square::Empty` in it.

Whether the puzzle is fully filled in, and matches the solution.

Moves the cursor to the next empty square in the current word, or if there are no empty squares left, to the start of the next word.

Moves the cursor to the next empty square starting from the current one, in the current word. If there are no empty squares at or after the current o

Returns the position of the next white square below `pos`.

Returns the position of the next white square to the left of `pos`.

Returns the position of the next white square to the right of `pos`.

Returns the position of the next white square above `pos`.

Handles the key events and updates the state of [`App`].

Set running to false to quit the application.

Determines how a particular square should be styled. See [SquareStyle].

Attempts to swap the cursor direction. However, if the current square is only part of an across clue, the direction cannot be switched to down, and vi

Take the next `expected.len()` bytes, if they match `expected`.

The text of the clue for the currently selected word.

A simple CLI for testing .puz parsing

Creates a Puz from the bytes of a `.puz` file.

Creates a Puzzle from the bytes of a `.puz` file.