{
  "tsfVersion": "1.0",
  "name": "lfs",
  "summary": "Create, extract or list a Linear File Strip (.lfs) archive",
  "description": "Bundles a directory tree into a single TVDOS Linear File Strip archive, or unpacks one. Exactly one mode must be given: -c creates ARCHIVE from PATH, -x extracts ARCHIVE into PATH, and -t lists the files in ARCHIVE (PATH is not used). Individual files are stored uncompressed; gzip the whole .lfs to compress it.",
  "symbols": {
    "create":   { "kind": "option", "short": "-c", "summary": "Create an archive from a directory" },
    "extract":  { "kind": "option", "short": "-x", "summary": "Extract an archive into a directory" },
    "list":     { "kind": "option", "short": "-t", "summary": "List the files stored in an archive" },
    "relative": { "kind": "option", "short": "-r", "summary": "Store paths relative to the source directory (with -c)" },
    "archive":  { "kind": "positional", "type": "file", "name": "ARCHIVE", "summary": "The .lfs archive file" },
    "path":     { "kind": "positional", "type": "directory", "name": "PATH", "summary": "Source directory (-c) or destination directory (-x); unused for -t" }
  },
  "synopsis": {
    "type": "sequence",
    "children": [
      {
        "type": "choice",
        "children": [
          { "type": "reference", "symbol": "create" },
          { "type": "reference", "symbol": "extract" },
          { "type": "reference", "symbol": "list" }
        ]
      },
      { "type": "optional", "child": { "type": "reference", "symbol": "relative" } },
      { "type": "reference", "symbol": "archive" },
      { "type": "optional", "child": { "type": "reference", "symbol": "path" } }
    ]
  },
  "constraints": [
    { "type": "cardinality", "symbols": ["create", "extract", "list"], "minimum": 1, "maximum": 1 },
    { "type": "requires", "subject": "relative", "targets": ["create"] }
  ]
}