gif.json

{
  "descriptions": [
    [
      6,
      "header",
      "GIF89a"
    ],
    [
      2,
      "width",
      "4"
    ],
    [
      2,
      "height",
      "4"
    ],
    [
      0,
      "gcp_follows",
      "true"
    ],
    [
      0,
      "color_resolution",
      "8"
    ],
    [
      0,
      "zero",
      "0"
    ],
    [
      0,
      "bit_depth",
      "1"
    ],
    [
      1,
      "black_color",
      "0"
    ],
    [
      1,
      "pixel_aspect_ratio",
      "0"
    ],
    [
      1,
      "terminator",
      "59"
    ],
    [
      1,
      "0",
      "0"
    ],
    [
      1,
      "1",
      "0"
    ],
    [
      1,
      "2",
      "0"
    ],
    [
      1,
      "0",
      "0"
    ],
    [
      1,
      "1",
      "0"
    ],
    [
      1,
      "2",
      "0"
    ],
    [
      1,
      "introducer",
      "33"
    ],
    [
      1,
      "function_code",
      "GraphicalControl"
    ],
    [
      1,
      "byte_count",
      "4"
    ],
    [
      4,
      "data",
      "\u0000\u0000\u0000\u0000"
    ],
    [
      1,
      "terminator",
      "0"
    ],
    [
      1,
      "introducer",
      "33"
    ],
    [
      1,
      "function_code",
      "Application"
    ],
    [
      1,
      "byte_count",
      "11"
    ],
    [
      11,
      "data",
      "NETSCAPE2.0"
    ],
    [
      1,
      "byte_count",
      "3"
    ],
    [
      3,
      "data",
      "\u0001\u0000\u0000"
    ],
    [
      1,
      "terminator",
      "0"
    ],
    [
      1,
      "separator_character",
      "44"
    ],
    [
      2,
      "left",
      "0"
    ],
    [
      2,
      "top",
      "0"
    ],
    [
      2,
      "width",
      "4"
    ],
    [
      2,
      "height",
      "4"
    ],
    [
      0,
      "local_color_map_follows",
      "false"
    ],
    [
      0,
      "image_interlaced",
      "false"
    ],
    [
      0,
      "zero",
      "0"
    ],
    [
      0,
      "bit_depth",
      "1"
    ],
    [
      1,
      "code_size",
      "2"
    ],
    [
      1,
      "byte_count",
      "4"
    ],
    [
      4,
      "data",
      "\ufffd\ufffd\t\u0005"
    ],
    [
      1,
      "terminator",
      "0"
    ],
    [
      1,
      "introducer",
      "33"
    ],
    [
      1,
      "function_code",
      "GraphicalControl"
    ],
    [
      1,
      "byte_count",
      "4"
    ],
    [
      4,
      "data",
      "\u0000\u0000\u0000\u0000"
    ],
    [
      1,
      "terminator",
      "0"
    ],
    [
      1,
      "separator_character",
      "44"
    ],
    [
      2,
      "left",
      "0"
    ],
    [
      2,
      "top",
      "0"
    ],
    [
      2,
      "width",
      "4"
    ],
    [
      2,
      "height",
      "4"
    ],
    [
      0,
      "local_color_map_follows",
      "true"
    ],
    [
      0,
      "image_interlaced",
      "false"
    ],
    [
      0,
      "zero",
      "0"
    ],
    [
      0,
      "bit_depth",
      "1"
    ],
    [
      1,
      "code_size",
      "255"
    ],
    [
      1,
      "0",
      "255"
    ],
    [
      1,
      "1",
      "255"
    ],
    [
      1,
      "2",
      "0"
    ],
    [
      1,
      "0",
      "0"
    ],
    [
      1,
      "1",
      "0"
    ],
    [
      1,
      "2",
      "2"
    ],
    [
      1,
      "byte_count",
      "4"
    ],
    [
      4,
      "data",
      "\ufffd\ufffd\t\u0005"
    ],
    [
      1,
      "terminator",
      "0"
    ]
  ],
  "hexii": [
    "G",
    "I",
    "F",
    "8",
    "9",
    "a",
    4,
    0,
    4,
    0,
    1,
    7,
    0,
    0,
    0,
    0,
    ";",
    0,
    0,
    0,
    0,
    0,
    0,
    "!",
    249,
    4,
    0,
    0,
    0,
    0,
    0,
    "!",
    255,
    11,
    "N",
    "E",
    "T",
    "S",
    "C",
    "A",
    "P",
    "E",
    "2",
    ".",
    "0",
    3,
    1,
    0,
    0,
    0,
    ",",
    0,
    0,
    0,
    0,
    4,
    0,
    4,
    0,
    0,
    0,
    0,
    0,
    2,
    4,
    132,
    143,
    9,
    5,
    0,
    "!",
    249,
    4,
    0,
    0,
    0,
    0,
    0,
    ",",
    0,
    0,
    0,
    0,
    4,
    0,
    4,
    0,
    1,
    0,
    0,
    0,
    255,
    255,
    255,
    0,
    0,
    0,
    2,
    4,
    132,
    143,
    9,
    5,
    0
  ]
}

to_sbud.jq

# Usage:
# fq -L . 'include "to_sbud"; to_sbud' format/gif/testdata/4x4.gif | pbcopy
def to_sbud:
  ( [.. | to_entries?[]] as $entries
  | { hexii:
        [ $entries[].value
        | scalars
        | tobytes?
        | explode[]
        | if . >= 33 and . <= 126 then [.] | implode end
        ]
    , descriptions:
        [ $entries[] as {$key, $value}
        | $value
        | scalars
        | [ tobytesrange.size
          , ($key | tostring)
          , if type != "string" then tojson end
          ]?
        ]
    }
  );