@xwordly/xword-parser
Version:
Fast, type-safe TypeScript library for parsing crossword puzzles (PUZ, iPUZ, JPZ, XD)
1 lines • 35.4 kB
Source Map (JSON)
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string;\n solution?: string;\n style?: CellStyle;\n continued?: Record<string, unknown>;\n directions?: string[];\n given?: boolean;\n}\n\nexport interface IpuzClue {\n number: number | string;\n text: string;\n cells?: Array<[number, number]>;\n references?: Array<number | string>;\n continued?: Record<string, unknown>;\n highlight?: boolean;\n image?: string;\n}\n\nexport interface IpuzPuzzle {\n version: string;\n kind: string[];\n\n dimensions: {\n width: number;\n height: number;\n };\n\n puzzle: IpuzCell[][];\n\n title?: string;\n author?: string;\n copyright?: string;\n publisher?: string;\n publication?: string;\n url?: string;\n uniqueId?: string;\n intro?: string;\n explanation?: string;\n annotation?: string;\n notes?: string;\n difficulty?: string;\n origin?: string;\n date?: string;\n\n empty?: string;\n charset?: string;\n\n clues: Record<string, IpuzClue[]>;\n\n solution?: Array<Array<string | null>>;\n\n zones?: Array<Record<string, unknown>>;\n\n styles?: Record<string, unknown>;\n\n extensions: Record<string, unknown>;\n\n volatile?: Record<string, boolean>;\n\n checksum?: string[];\n\n saved?: Array<Array<string | null>>;\n\n enumeration?: boolean;\n enumerations?: string[];\n\n misses?: Record<string, unknown>;\n\n block?: string;\n\n showEnumerations?: boolean;\n cluePlacement?: string;\n\n answer?: string;\n answers?: string[];\n}\n\ninterface IpuzCellData {\n cell?: unknown;\n style?: Record<string, unknown>;\n value?: string;\n continued?: Record<string, unknown>;\n directions?: string[];\n given?: boolean;\n}\n\ninterface IpuzClueData {\n number?: number | string;\n clue?: string;\n cells?: Array<[number, number]>;\n references?: Array<number | string>;\n continued?: Record<string, unknown>;\n highlight?: boolean;\n image?: string;\n}\n\ninterface IpuzData {\n version?: string;\n kind?: string[];\n dimensions?: {\n width: number;\n height: number;\n };\n puzzle?: unknown[][];\n solution?: Array<Array<string | null>>;\n clues?: Record<string, unknown[]>;\n saved?: Array<Array<string | null>>;\n title?: string;\n author?: string;\n copyright?: string;\n publisher?: string;\n publication?: string;\n url?: string;\n uniqueid?: string;\n intro?: string;\n explanation?: string;\n annotation?: string;\n notes?: string;\n difficulty?: string;\n origin?: string;\n date?: string;\n empty?: string;\n charset?: string;\n block?: string;\n showenumerations?: boolean;\n clueplacement?: string;\n answer?: string;\n answers?: string[];\n enumeration?: boolean;\n enumerations?: string[];\n volatile?: Record<string, boolean>;\n checksum?: string[];\n zones?: Array<Record<string, unknown>>;\n styles?: Record<string, unknown>;\n misses?: Record<string, unknown>;\n [key: string]: unknown;\n}\n\nfunction parseCellFromIpuz(cellData: unknown, solutionData?: unknown): IpuzCell {\n const cell: IpuzCell = {\n type: CellType.NORMAL,\n };\n\n if (cellData === null || cellData === 'null') {\n cell.type = CellType.NULL;\n return cell;\n }\n\n if (cellData === '#') {\n cell.type = CellType.BLOCK;\n return cell;\n }\n\n if (typeof cellData === 'object' && cellData !== null) {\n const cellObj = cellData as IpuzCellData;\n\n if ('cell' in cellObj && cellObj.cell !== undefined) {\n const baseValue = cellObj.cell;\n if (baseValue === '#') {\n cell.type = CellType.BLOCK;\n } else if (baseValue === 'null' || baseValue === null) {\n cell.type = CellType.NULL;\n } else if (typeof baseValue === 'number' || typeof baseValue === 'string') {\n if (baseValue !== 0 && baseValue !== '0') {\n cell.number = baseValue;\n }\n }\n }\n\n if ('style' in cellObj && cellObj.style && typeof cellObj.style === 'object') {\n cell.style = {};\n const styleFields: (keyof CellStyle)[] = [\n 'shapebg',\n 'highlight',\n 'named',\n 'border',\n 'divided',\n 'label',\n 'mark',\n 'imagebg',\n 'color',\n 'colortext',\n 'colorborder',\n 'colorbar',\n 'barred',\n 'dotted',\n 'dashed',\n 'lessthan',\n 'greaterthan',\n 'equal',\n 'handler',\n 'handlerdata',\n ];\n\n for (const field of styleFields) {\n if (field in cellObj.style) {\n const value = cellObj.style[field];\n if (value !== undefined) {\n (cell.style as Record<string, unknown>)[field] = value;\n }\n }\n }\n }\n\n if ('value' in cellObj && cellObj.value !== undefined) {\n cell.value = cellObj.value;\n }\n\n if ('continued' in cellObj && cellObj.continued !== undefined) {\n cell.continued = cellObj.continued;\n }\n\n if ('directions' in cellObj && cellObj.directions !== undefined) {\n cell.directions = cellObj.directions;\n }\n\n if ('given' in cellObj && cellObj.given !== undefined) {\n cell.given = cellObj.given;\n }\n } else if (typeof cellData === 'number' || typeof cellData === 'string') {\n if (typeof cellData === 'number' && cellData > 0) {\n cell.number = cellData;\n } else if (typeof cellData === 'string') {\n if (cellData === '0' || cellData === '#' || cellData === 'null') {\n // Handle special cases\n if (cellData === '#') {\n cell.type = CellType.BLOCK;\n }\n } else {\n // Try to parse as number for cell numbering\n const numVal = Number.parseInt(cellData, 10);\n if (!Number.isNaN(numVal) && numVal > 0) {\n cell.number = cellData;\n } else {\n // It's a letter/value\n cell.value = cellData;\n }\n }\n }\n }\n\n if (solutionData) {\n if (\n typeof solutionData === 'string' &&\n solutionData !== '#' &&\n solutionData !== 'null' &&\n solutionData !== null\n ) {\n cell.solution = solutionData;\n }\n }\n\n return cell;\n}\n\nfunction parseCluesFromIpuz(cluesData: Record<string, unknown[]>): Record<string, IpuzClue[]> {\n const clues: Record<string, IpuzClue[]> = {};\n\n for (const [direction, clueList] of Object.entries(cluesData)) {\n if (!Array.isArray(clueList)) {\n continue;\n }\n clues[direction] = [];\n\n for (const clueItem of clueList) {\n let clue: IpuzClue | null = null;\n\n if (Array.isArray(clueItem) && clueItem.length >= 2) {\n clue = {\n number: clueItem[0] as number | string,\n text: clueItem[1] as string,\n };\n\n if (clueItem.length > 2) {\n for (let i = 2; i < clueItem.length; i++) {\n const extra = clueItem[i] as unknown;\n if (typeof extra === 'object' && extra !== null) {\n const extraObj = extra as IpuzClueData;\n if ('references' in extraObj && extraObj.references) {\n clue.references = extraObj.references;\n }\n if ('continued' in extraObj && extraObj.continued) {\n clue.continued = extraObj.continued;\n }\n if ('highlight' in extraObj && extraObj.highlight) {\n clue.highlight = extraObj.highlight;\n }\n if ('image' in extraObj && extraObj.image) {\n clue.image = extraObj.image;\n }\n }\n }\n }\n } else if (typeof clueItem === 'object' && clueItem !== null) {\n const clueObj = clueItem as IpuzClueData;\n clue = {\n number: clueObj.number || '',\n text: clueObj.clue || '',\n };\n\n if (clueObj.cells) {\n clue.cells = clueObj.cells;\n }\n if (clueObj.references) {\n clue.references = clueObj.references;\n }\n if (clueObj.continued) {\n clue.continued = clueObj.continued;\n }\n if (clueObj.highlight !== undefined) {\n clue.highlight = clueObj.highlight;\n }\n if (clueObj.image) {\n clue.image = clueObj.image;\n }\n }\n\n if (clue) {\n clues[direction].push(clue);\n }\n }\n }\n\n return clues;\n}\n\n/**\n * Parse an iPUZ format crossword puzzle.\n *\n * @param content - The iPUZ data as JSON string or Buffer\n * @param options - Optional parsing options\n * @param options.maxGridSize - Maximum allowed grid dimensions\n * @returns An IpuzPuzzle object containing all puzzle data\n * @throws {IpuzParseError} When the content is not valid iPUZ format\n * @throws {UnsupportedPuzzleTypeError} When the puzzle is not a crossword\n *\n * @example\n * ```typescript\n * import { parseIpuz } from 'xword-parser';\n * const ipuzData = '{\"version\":\"http://ipuz.org/v2\",\"kind\":[\"http://ipuz.org/crossword#1\"]...}';\n * const puzzle = parseIpuz(ipuzData);\n * ```\n */\nexport function parseIpuz(content: string | Buffer, options?: ParseOptions): IpuzPuzzle {\n const stringContent = typeof content === 'string' ? content : content.toString('utf-8');\n let jsonContent = stringContent.trim();\n\n if (jsonContent.startsWith('ipuz(') && jsonContent.endsWith(')')) {\n jsonContent = jsonContent.slice(5, -1);\n }\n\n let data: IpuzData;\n try {\n data = JSON.parse(jsonContent) as IpuzData;\n } catch (e) {\n throw new IpuzParseError(\n `Invalid JSON: ${e instanceof Error ? e.message : 'Unknown error'}`,\n ErrorCode.IPUZ_INVALID_JSON,\n undefined,\n e,\n );\n }\n\n if (\n !data.kind ||\n !Array.isArray(data.kind) ||\n !data.kind.some((k: string) => k.includes('crossword'))\n ) {\n throw new UnsupportedPuzzleTypeError('Non-crossword');\n }\n\n // Validate required fields for crossword puzzles\n if (!data.dimensions || typeof data.dimensions !== 'object') {\n throw new IpuzParseError(\n 'Missing or invalid dimensions field',\n ErrorCode.IPUZ_MISSING_REQUIRED_FIELD,\n );\n }\n\n if (!data.dimensions.width || !data.dimensions.height) {\n throw new IpuzParseError(\n 'Missing width or height in dimensions',\n ErrorCode.IPUZ_MISSING_REQUIRED_FIELD,\n );\n }\n\n if (typeof data.dimensions.width !== 'number' || typeof data.dimensions.height !== 'number') {\n throw new IpuzParseError('Width and height must be numbers', ErrorCode.IPUZ_INVALID_DATA_TYPE);\n }\n\n if (!Number.isInteger(data.dimensions.width) || !Number.isInteger(data.dimensions.height)) {\n throw new IpuzParseError('Width and height must be integers', ErrorCode.IPUZ_INVALID_DATA_TYPE);\n }\n\n if (data.dimensions.width <= 0 || data.dimensions.height <= 0) {\n throw new IpuzParseError(\n 'Width and height must be positive numbers',\n ErrorCode.IPUZ_INVALID_GRID_SIZE,\n );\n }\n const maxWidth = options?.maxGridSize?.width ?? MAX_GRID_WIDTH;\n const maxHeight = options?.maxGridSize?.height ?? MAX_GRID_HEIGHT;\n\n if (data.dimensions.width > maxWidth || data.dimensions.height > maxHeight) {\n throw new IpuzParseError(\n `Grid dimensions too large: ${data.dimensions.width}x${data.dimensions.height}. Maximum supported size is ${maxWidth}x${maxHeight}`,\n ErrorCode.IPUZ_INVALID_GRID_SIZE,\n );\n }\n\n if (!data.puzzle || !Array.isArray(data.puzzle)) {\n throw new IpuzParseError(\n 'Missing or invalid puzzle grid',\n ErrorCode.IPUZ_MISSING_REQUIRED_FIELD,\n );\n }\n\n const puzzle: IpuzPuzzle = {\n version: data.version || '',\n kind: data.kind || [],\n dimensions: data.dimensions,\n puzzle: [],\n clues: {},\n extensions: {},\n };\n\n const simpleFields = [\n 'title',\n 'author',\n 'copyright',\n 'publisher',\n 'publication',\n 'url',\n 'intro',\n 'explanation',\n 'annotation',\n 'notes',\n 'difficulty',\n 'origin',\n 'date',\n 'empty',\n 'charset',\n 'block',\n 'answer',\n ] as const;\n\n for (const field of simpleFields) {\n if (field in data && data[field] !== undefined) {\n // Use type assertion for known fields\n (puzzle as unknown as Record<string, unknown>)[field] = data[field];\n }\n }\n\n // Handle fields that need renaming from spec format to camelCase\n if ('uniqueid' in data && data.uniqueid !== undefined) {\n puzzle.uniqueId = data.uniqueid;\n }\n if ('showenumerations' in data && data.showenumerations !== undefined) {\n puzzle.showEnumerations = data.showenumerations;\n }\n if ('clueplacement' in data && data.clueplacement !== undefined) {\n puzzle.cluePlacement = data.clueplacement;\n }\n\n if ('answers' in data && data.answers) {\n puzzle.answers = data.answers;\n }\n\n if ('enumeration' in data && data.enumeration !== undefined) {\n puzzle.enumeration = data.enumeration;\n }\n\n if ('enumerations' in data && data.enumerations) {\n puzzle.enumerations = data.enumerations;\n }\n\n if ('volatile' in data && data.volatile) {\n puzzle.volatile = data.volatile;\n }\n\n if ('checksum' in data && data.checksum) {\n puzzle.checksum = data.checksum;\n }\n\n if ('zones' in data && data.zones) {\n puzzle.zones = data.zones;\n }\n\n if ('styles' in data && data.styles) {\n puzzle.styles = data.styles;\n }\n\n if ('misses' in data && data.misses) {\n puzzle.misses = data.misses;\n }\n\n const solutionGrid = data.solution || [];\n if (solutionGrid.length > 0) {\n puzzle.solution = solutionGrid;\n }\n\n if ('saved' in data && data.saved) {\n puzzle.saved = data.saved;\n }\n\n const puzzleGrid = data.puzzle || [];\n for (let rowIdx = 0; rowIdx < puzzleGrid.length; rowIdx++) {\n const row = puzzleGrid[rowIdx];\n if (!row) continue;\n\n const cellRow: IpuzCell[] = [];\n\n for (let colIdx = 0; colIdx < row.length; colIdx++) {\n const cellData = row[colIdx];\n let solutionVal = undefined;\n\n if (\n solutionGrid.length > rowIdx &&\n solutionGrid[rowIdx] &&\n solutionGrid[rowIdx]!.length > colIdx\n ) {\n solutionVal = solutionGrid[rowIdx]![colIdx];\n }\n\n const cell = parseCellFromIpuz(cellData, solutionVal);\n cellRow.push(cell);\n }\n\n puzzle.puzzle.push(cellRow);\n }\n\n if ('clues' in data && data.clues) {\n puzzle.clues = parseCluesFromIpuz(data.clues);\n }\n\n for (const [key, value] of Object.entries(data)) {\n if (key.startsWith('http://') || key.startsWith('https://') || key.includes(':')) {\n puzzle.extensions[key] = value;\n }\n }\n\n return puzzle;\n}\n\n/**\n * Convert an iPUZ puzzle to the unified Puzzle format.\n *\n * @param puzzle - The IpuzPuzzle object to convert\n * @returns A unified Puzzle object\n *\n * @example\n * ```typescript\n * import { parseIpuz, convertIpuzToUnified } from 'xword-parser';\n * const ipuzPuzzle = parseIpuz(ipuzData);\n * const unifiedPuzzle = convertIpuzToUnified(ipuzPuzzle);\n * ```\n */\nexport function convertIpuzToUnified(puzzle: IpuzPuzzle): Puzzle {\n const grid: Grid = {\n width: puzzle.dimensions.width,\n height: puzzle.dimensions.height,\n cells: [],\n };\n\n // Convert grid\n for (let y = 0; y < puzzle.dimensions.height; y++) {\n const row: UnifiedCell[] = [];\n for (let x = 0; x < puzzle.dimensions.width; x++) {\n const ipuzCell = puzzle.puzzle[y]?.[x];\n const solutionCell = puzzle.solution?.[y]?.[x];\n\n // iPUZ cells are already Cell objects from our parser\n const cellNumber = ipuzCell?.number\n ? typeof ipuzCell.number === 'string'\n ? parseInt(ipuzCell.number)\n : ipuzCell.number\n : undefined;\n\n const isBlack = ipuzCell?.type === CellType.BLOCK;\n\n const solution =\n typeof solutionCell === 'string' ? solutionCell : ipuzCell?.value || undefined;\n\n const cell: UnifiedCell = {\n solution,\n number: cellNumber,\n isBlack,\n };\n\n // Check for circle style (common in iPUZ)\n if (\n ipuzCell?.style &&\n typeof ipuzCell.style === 'object' &&\n ipuzCell.style.shapebg === 'circle'\n ) {\n cell.isCircled = true;\n }\n\n // Add remaining cell-specific metadata if present\n if (ipuzCell?.style || ipuzCell?.continued || ipuzCell?.directions || ipuzCell?.given) {\n cell.additionalProperties = {};\n // Only add style if it has more than just shapebg='circle'\n if (\n ipuzCell.style &&\n typeof ipuzCell.style === 'object' &&\n (Object.keys(ipuzCell.style).length > 1 || ipuzCell.style.shapebg !== 'circle')\n ) {\n cell.additionalProperties.style = ipuzCell.style;\n }\n if (ipuzCell.continued) {\n cell.additionalProperties.continued = ipuzCell.continued;\n }\n if (ipuzCell.directions) {\n cell.additionalProperties.directions = ipuzCell.directions;\n }\n if (ipuzCell.given !== undefined) {\n cell.additionalProperties.given = ipuzCell.given;\n }\n // Remove additionalProperties if it's empty\n if (Object.keys(cell.additionalProperties).length === 0) {\n delete cell.additionalProperties;\n }\n }\n\n row.push(cell);\n }\n grid.cells.push(row);\n }\n\n // Convert clues\n const clues: Clues = {\n across: [],\n down: [],\n };\n\n if (puzzle.clues?.Across) {\n for (const clue of puzzle.clues.Across) {\n const clueNumber = typeof clue.number === 'string' ? parseInt(clue.number) : clue.number;\n // Skip invalid clue numbers (NaN, 0, negative)\n if (!Number.isNaN(clueNumber) && clueNumber > 0) {\n clues.across.push({\n number: clueNumber,\n text: clue.text || '',\n });\n }\n }\n }\n\n if (puzzle.clues?.Down) {\n for (const clue of puzzle.clues.Down) {\n const clueNumber = typeof clue.number === 'string' ? parseInt(clue.number) : clue.number;\n // Skip invalid clue numbers (NaN, 0, negative)\n if (!Number.isNaN(clueNumber) && clueNumber > 0) {\n clues.down.push({\n number: clueNumber,\n text: clue.text || '',\n });\n }\n }\n }\n\n const result: Puzzle = {\n title: puzzle.title,\n author: puzzle.author,\n copyright: puzzle.copyright,\n notes: puzzle.notes,\n date: puzzle.date,\n grid,\n clues,\n };\n\n // Add puzzle-level metadata if present\n const additionalProps: Record<string, unknown> = {};\n if (puzzle.difficulty) additionalProps.difficulty = puzzle.difficulty;\n if (puzzle.publisher) additionalProps.publisher = puzzle.publisher;\n if (puzzle.publication) additionalProps.publication = puzzle.publication;\n if (puzzle.url) additionalProps.url = puzzle.url;\n if (puzzle.uniqueId) additionalProps.uniqueId = puzzle.uniqueId;\n if (puzzle.intro) additionalProps.intro = puzzle.intro;\n if (puzzle.explanation) additionalProps.explanation = puzzle.explanation;\n if (puzzle.annotation) additionalProps.annotation = puzzle.annotation;\n\n // Add styles if present\n if (puzzle.styles && Object.keys(puzzle.styles).length > 0) {\n additionalProps.styles = puzzle.styles;\n }\n\n // Add zones if present\n if (puzzle.zones && puzzle.zones.length > 0) {\n additionalProps.zones = puzzle.zones;\n }\n\n // Add extensions if present\n if (Object.keys(puzzle.extensions).length > 0) {\n additionalProps.extensions = puzzle.extensions;\n }\n\n if (Object.keys(additionalProps).length > 0) {\n result.additionalProperties = additionalProps;\n }\n\n return result;\n}\n"]}