update readme

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 Caleb Denio
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

@@ -2,7 +2,7 @@ Very silly terminal-based crossword solver. It can play .puz / .ipuz files from
 
 - Requirements: [Go](https://go.dev)
 - Build: `make`
-- Usage: `./bin/crossword <file>.puz`
+- Usage: `./bin/crossword <file>.{ipuz,puz}`
 
 ![demo](demo.gif)
 

game/game.go

@@ -40,6 +40,7 @@ type State struct {
 	SolveState      SolveState
 	CheckState      []rune
 	UIState         UIState
+	NoteVisible     bool
 }
 
 func RenderWithLineWrap(s string, width int) (out string, lines int) {
@@ -327,8 +328,17 @@ func (state *State) RenderUI(w io.Writer, width int) int {
 	uiHeight += 2
 	fmt.Fprintf(w, "AUTHOR: %s\r\n", state.Puzzle.Author)
 	uiHeight += 1
+
+	if state.Puzzle.Note != "" && state.NoteVisible {
+		note, noteLines := RenderWithLineWrap(state.Puzzle.Note, min(width, 60))
+
+		fmt.Fprintf(w, "\r\n%s\r\n", AnsiDimmed(note))
+		uiHeight += noteLines + 2
+	}
+
 	fmt.Fprint(w, state.RenderPuzzle()+"\r\n")
 	uiHeight += state.Puzzle.Height + 3
+
 	if state.SelectedClue != nil {
 		directionStr := "down"
 		if state.SelectedClue.Direction == puz.DirectionAcross {
@@ -341,22 +351,29 @@ func (state *State) RenderUI(w io.Writer, width int) int {
 		io.WriteString(w, "\r\n")
 		uiHeight += 1
 	}
-	fmt.Fprintf(w, "%s\r\n", state.Puzzle.Copyright)
-	uiHeight += 1
+	if state.Puzzle.Copyright != "" {
+		fmt.Fprintf(w, "%s\r\n\r\n", state.Puzzle.Copyright)
+		uiHeight += 2
+	}
 
 	switch state.UIState {
 	case StateGame:
-		fmt.Fprintln(w, AnsiDimmed("\r\n[enter]/[tab]: next word | [ctrl+a]: menu | [ctrl+c]: exit"))
-		uiHeight += 2
+		line := "[enter]/[tab]: next word | [ctrl+a]: menu"
+		if state.Puzzle.Note != "" {
+			line += " | [ctrl+n]: toggle note"
+		}
+		line += " | [ctrl+c]: exit\r\n"
+		fmt.Fprint(w, AnsiDimmed(line))
+		uiHeight += 1
 	case StateMenu:
-		fmt.Fprintln(w, AnsiDimmed("\r\n[c]: check puzzle/word | [r]: reveal puzzle/word | [x]: clear grid | [q]: exit menu"))
-		uiHeight += 2
+		fmt.Fprint(w, AnsiDimmed("[c]: check puzzle/word | [r]: reveal puzzle/word | [x]: clear grid | [q]: exit menu\r\n"))
+		uiHeight += 1
 	case StateCheckMenu:
-		fmt.Fprintln(w, AnsiDimmed("\r\n[w]: check word | [p]: check puzzle | [q]: exit menu"))
-		uiHeight += 2
+		fmt.Fprint(w, AnsiDimmed("[w]: check word | [p]: check puzzle | [q]: exit menu\r\n"))
+		uiHeight += 1
 	case StateRevealMenu:
-		fmt.Fprintln(w, AnsiDimmed("\r\n[w]: reveal word | [p]: reveal puzzle | [q]: exit menu"))
-		uiHeight += 2
+		fmt.Fprint(w, AnsiDimmed("[w]: reveal word | [p]: reveal puzzle | [q]: exit menu\r\n"))
+		uiHeight += 1
 	}
 
 	switch state.SolveState {
@@ -584,6 +601,11 @@ func (state *State) HandleInput(buffer []byte) (exited bool) {
 		return false
 	}
 
+	if buffer[0] == '\x0E' {
+		state.NoteVisible = !state.NoteVisible
+		return false
+	}
+
 	if buffer[0] == ' ' {
 		state.SwitchDirections()
 	}
@@ -626,10 +648,12 @@ func (state *State) HandleInput(buffer []byte) (exited bool) {
 		// is there a filled cell underneath the cursor?
 		if state.PuzzleState[state.SelectedCell] != '-' {
 			state.PuzzleState[state.SelectedCell] = '-'
+			state.CheckState[state.SelectedCell] = 0x00
 		} else {
 			i := slices.Index(state.SelectedClue.Cells, state.SelectedCell)
 			if i > 0 {
 				state.PuzzleState[state.SelectedClue.Cells[i-1]] = '-' // clear the previous cell
+				state.CheckState[state.SelectedClue.Cells[i-1]] = 0x00
 				state.SelectedCell = state.SelectedClue.Cells[i-1]
 			}
 		}

puz/ipuz.go

@@ -21,6 +21,7 @@ type iPuzFile struct {
 	Title      string                `json:"title"`
 	Author     string                `json:"author"`
 	Copyright  string                `json:"copyright"`
+	Notes      string                `json:"notes"`
 	Puzzle     [][]any               `json:"puzzle"`
 	Solution   [][]string            `json:"solution"`
 	Dimensions iPuzDimensions        `json:"dimensions"`
@@ -63,9 +64,12 @@ func ParseIPuz(file []byte) (*Puzzle, error) {
 
 	puzzle := new(Puzzle)
 
+	puzzle.RebusCells = make(map[int]string)
+
 	puzzle.Title = parsed.Title
 	puzzle.Author = parsed.Author
 	puzzle.Copyright = parsed.Copyright
+	puzzle.Note = parsed.Notes
 
 	puzzle.Width = parsed.Dimensions.Width
 	puzzle.Height = parsed.Dimensions.Height
@@ -95,12 +99,13 @@ func ParseIPuz(file []byte) (*Puzzle, error) {
 	puzzle.State = state.String()
 
 	solution := strings.Builder{}
-	for _, row := range parsed.Solution {
-		for _, cell := range row {
+	for y, row := range parsed.Solution {
+		for x, cell := range row {
 			if cell == "#" {
 				solution.WriteRune('.')
 			} else if len(cell) > 1 {
 				solution.WriteByte(cell[0])
+				puzzle.RebusCells[y*puzzle.Width+x] = cell
 				puzzle.HasRebus = true
 			} else if len(cell) == 1 {
 				solution.WriteString(cell)

puz/puz.go

@@ -7,6 +7,8 @@ import (
 	"errors"
 	"io"
 	"math"
+	"regexp"
+	"strconv"
 	"strings"
 
 	"golang.org/x/text/encoding/charmap"
@@ -123,6 +125,8 @@ func ParsePuz(file []byte) (*Puzzle, error) {
 
 	puzzle := new(Puzzle)
 
+	puzzle.RebusCells = make(map[int]string)
+
 	_, err = r.Seek(10, io.SeekCurrent)
 	if err != nil {
 		return nil, err
@@ -211,11 +215,13 @@ func ParsePuz(file []byte) (*Puzzle, error) {
 		clues = append(clues, clue)
 	}
 
-	// read the "note" field, currently unused
-	_, err = readText(buf, string(version[0]))
+	note, err := readText(buf, string(version[0]))
 	if err != nil {
 		return nil, err
 	}
+	puzzle.Note = note
+
+	extraBlocks := make(map[string]*ExtraBlock)
 
 	for {
 		extra, err := readExtraBlock(buf)
@@ -224,8 +230,30 @@ func ParsePuz(file []byte) (*Puzzle, error) {
 		} else if err != nil {
 			return nil, err
 		}
-		if extra.Name == "RTBL" {
-			puzzle.HasRebus = true
+		extraBlocks[extra.Name] = extra
+	}
+
+	grbs, grbsOk := extraBlocks["GRBS"]
+	trbl, trblOk := extraBlocks["RTBL"]
+	if grbsOk && trblOk {
+		puzzle.HasRebus = true
+		rebusCellMap := make(map[int][]int)
+		for i, b := range grbs.Data {
+			if b > 0 {
+				rebusCellMap[int(b)-1] = append(rebusCellMap[int(b)-1], i)
+			}
+		}
+
+		rebusData := regexp.MustCompile(`\s*(\d+):(\w+);\s*`).FindAllStringSubmatch(string(trbl.Data), -1)
+		for _, rebus := range rebusData {
+			cell, err := strconv.Atoi(rebus[1])
+			if err != nil {
+				continue
+			}
+
+			for _, c := range rebusCellMap[cell] {
+				puzzle.RebusCells[c] = rebus[2]
+			}
 		}
 	}
 

puz/shared.go

@@ -29,6 +29,7 @@ type Puzzle struct {
 	Title     string
 	Author    string
 	Copyright string
+	Note      string
 
 	Solution string
 	State    string
@@ -38,6 +39,8 @@ type Puzzle struct {
 	Cells [][2]*Clue
 
 	HasRebus bool
+
+	RebusCells map[int]string
 }
 
 func LoadPuzzle(r io.Reader) (*Puzzle, error) {

ssh/main.go

@@ -39,8 +39,20 @@ func main() {
 			io.WriteString(s, "\x1b[?25h")
 		}()
 
-		pty, _, _ := s.Pty() // TODO: actually handle terminal size changes
-		uiHeight := state.RenderUI(s, pty.Window.Width)
+		pty, winCh, isPty := s.Pty()
+		if !isPty {
+			return
+		}
+
+		windowWidth := pty.Window.Width
+
+		uiHeight := state.RenderUI(s, windowWidth)
+
+		go func() {
+			for window := range winCh {
+				windowWidth = window.Width
+			}
+		}()
 
 		scanner := bufio.NewScanner(s)
 		scanner.Split(func(data []byte, atEOF bool) (advance int, token []byte, err error) {
@@ -72,14 +84,14 @@ func main() {
 				state.SelectedCell = -1
 				fmt.Fprintf(s, "\r\x1b[%dA", uiHeight)
 				fmt.Fprint(s, "\x1b[J")
-				state.RenderUI(s, pty.Window.Width)
+				state.RenderUI(s, windowWidth)
 				break
 			}
 
 			fmt.Fprintf(s, "\r\x1b[%dA", uiHeight)
 			fmt.Fprint(s, "\x1b[J")
 
-			uiHeight = state.RenderUI(s, pty.Window.Width)
+			uiHeight = state.RenderUI(s, windowWidth)
 		}
 
 		log.Printf("%s disconnected\n", s.RemoteAddr().String())