native macOS codings agent orchestrator prowl.onev.cat
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Swift
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nonisolated struct MirrorDocument { enum Block: Equatable, Identifiable { case text(Int, String) case code(Int, String, String) case table(Int, String, [[String]])
var id: Int { switch self { case .text(let id, _), .code(let id, _, _), .table(let id, _, _): id } } var raw: String { switch self { case .text(_, let text), .table(_, let text, _): text case .code(_, _, let code): code } } }
/// One item of the reading layout and a scroll anchor: a code or table block, a text block /// that fits in one layout chunk, or one chunk of a longer text block. struct Row: Identifiable { struct ID: Hashable, Comparable { let block: Int let chunk: Int
static func < (lhs: ID, rhs: ID) -> Bool { (lhs.block, lhs.chunk) < (rhs.block, rhs.chunk) } }
let id: ID let block: Block /// The chunk to show, or nil to show the whole block. let chunk: MirrorTextLayout.Chunk? }
let blocks: [Block]
var rows: [Row] { blocks.flatMap { block -> [Row] in let whole = [Row(id: .init(block: block.id, chunk: 0), block: block, chunk: nil)] guard case .text(_, let content) = block else { return whole } let chunks = MirrorTextLayout.chunks(content) guard chunks.count > 1 else { return whole } return chunks.map { Row(id: .init(block: block.id, chunk: $0.id), block: block, chunk: $0) } } }
init(_ text: String) { let lines = text.components(separatedBy: "\n") var result: [Block] = [] var pending: [String] = [] var index = 0 func flush() { guard !pending.isEmpty else { return } result.append(.text(result.count, pending.joined(separator: "\n"))) pending = [] } while index < lines.count { let line = lines[index] let trimmed = line.trimmingCharacters(in: .whitespaces) if trimmed.hasPrefix("```") { flush() let language = String(trimmed.dropFirst(3)) index += 1 var code: [String] = [] while index < lines.count, !lines[index].trimmingCharacters(in: .whitespaces).hasPrefix("```") { code.append(lines[index]) index += 1 } result.append(.code(result.count, language, code.joined(separator: "\n"))) if index < lines.count { index += 1 } } else if index + 1 < lines.count, let header = Self.cells(line), let separator = Self.cells(lines[index + 1]), separator.count == header.count, separator.allSatisfy({ cell in let marks = cell.replacing(":", with: "") return marks.count >= 3 && marks.allSatisfy { $0 == "-" } }) { flush() var rows = [header] var raw = [line, lines[index + 1]] index += 2 while index < lines.count, let cells = Self.cells(lines[index]), cells.count == header.count { rows.append(cells) raw.append(lines[index]) index += 1 } result.append(.table(result.count, raw.joined(separator: "\n"), rows)) } else { pending.append(line) index += 1 } } flush() blocks = result }
private static func cells(_ line: String) -> [String]? { let line = line.trimmingCharacters(in: .whitespaces) guard line.hasPrefix("|"), line.hasSuffix("|"), !line.contains("\\|") else { return nil } let cells = line.dropFirst().dropLast().split(separator: "|", omittingEmptySubsequences: false) .map { $0.trimmingCharacters(in: .whitespaces) } return cells.count > 1 ? cells : nil }}