使用 camlzip 解壓縮以 GZIP 壓縮的單一檔案

任務

壓縮 / 解壓縮以 GZIP 壓縮的單一檔案

使用的 Opam 套件

• camlzip 測試版本：1.11 — 使用的程式庫：camlzip

程式碼

(* To decompress a single file using the [Gzip](/p/camlzip/latest/doc/Gzip/index.html) module from `camlzip`, we open both files (`source` with `Gzip.open_in` and `dest` with `Out_channel.open_bin`) and transfer bytes through a bytes buffer. *) let buffer_size = 4096 let gunzip source dest = let gz_file = Gzip.open_in source in let buffer = Bytes.make buffer_size '*' in let oc = Out_channel.open_bin dest in let rec aux () = let len = Gzip.input gz_file buffer 0 buffer_size in if len <> 0 then begin Out_channel.output oc buffer 0 len; aux () end in aux (); Gzip.close_in gz_file; Out_channel.close oc

let buffer_size = 4096

let gunzip source dest =
  let gz_file = Gzip.open_in source in
  let buffer = Bytes.make buffer_size '*' in
  let oc = Out_channel.open_bin dest in
  let rec aux () =
    let len = Gzip.input gz_file buffer 0 buffer_size in
    if len <> 0 then
      begin
        Out_channel.output oc buffer 0 len;
        aux ()
      end
  in
  aux ();
  Gzip.close_in gz_file;
  Out_channel.close oc

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