- added some TODO comments

[helm.git] / helm / http_getter / http_getter_misc.ml

diff --git a/helm/http_getter/http_getter_misc.ml b/helm/http_getter/http_getter_misc.ml
index d40fbf4f6f0dea5b358f2c572daa65a0c7e80014..ab517e20ed66fdf57a188591b69e984d2ced1b10 100644 (file)
--- a/helm/http_getter/http_getter_misc.ml
+++ b/helm/http_getter/http_getter_misc.ml
@@ -1,5 +1,5 @@
 (*
- *  Copyright (C) 2000, HELM Team.
+ *  Copyright (C) 2003, HELM Team.
  *
  *  This file is part of HELM, an Hypertextual, Electronic
  *  Library of Mathematics, developed at the Computer Science
@@ -24,6 +24,9 @@
  *  http://cs.unibo.it/helm/.
  *)
 
+open Http_getter_debugger;;
+open Printf;;
+
 let fold_file f init fname =
   let inchan = open_in fname in
   let rec fold_lines' value =
@@ -43,3 +46,63 @@ let hashtbl_sorted_fold f tbl init =
   in
   List.fold_left (fun acc k -> f k (Hashtbl.find tbl k) acc) init sorted_keys
 
+let wget ?output url =
+  let flags =
+    (match output with Some file -> ["-O"; file] | None -> []) @ [url]
+  in
+  debug_print ("wget " ^ String.concat " " flags);
+  Shell.call
+    ~stdout:Shell.to_dev_null ~stderr:Shell.to_dev_null
+    [Shell.cmd "wget" flags]
+
+  (* stderr shown as usual *)
+let gzip ?(keep = false) fname =
+  if keep then begin  (* keep original file *)
+    debug_print ("gzip -f -c " ^ fname);
+    Shell.call
+      ~stdout:(Shell.to_file (fname ^ ".gz"))
+      [Shell.cmd "gzip" ["-f"; "-c"; fname]]
+  end else begin  (* don't keep original file *)
+    debug_print ("gzip -f " ^ fname);
+    Shell.call [Shell.cmd "gzip" ["-f"; fname]]
+  end
+
+  (* stderr shown as usual *)
+let gunzip ?(keep = false) fname =
+  if not (Pcre.pmatch ~pat:"\\.gz$" fname) then
+    failwith "gunzip: source file doesn't end with '.gz'";
+  let basename = Pcre.replace ~pat:"\\.gz$" fname in
+  if keep then begin  (* keep original file *)
+    debug_print ("gunzip -f -c " ^ fname);
+    Shell.call
+      ~stdout:(Shell.to_file basename)
+      [Shell.cmd "gunzip" ["-f"; "-c"; fname]]
+  end else begin  (* don't keep original file *)
+    debug_print ("gunzip -f " ^ fname);
+    Shell.call [Shell.cmd "gunzip" ["-f"; fname]]
+  end
+
+let tempfile () =
+  let buf = Buffer.create 28 in (* strlen("/tmp/fileSzb3Mw_http_getter") *)
+  Shell.call
+    ~stdout:(Shell.to_buffer buf)
+    [Shell.cmd "tempfile" ["--suffix=_http_getter"]];
+  Pcre.replace ~pat:"\n" (Buffer.contents buf)
+
+let mkdir ?(parents = false) dirname =
+  if not (Sys.file_exists dirname) then begin
+    let flags = if parents then ["-p"; dirname] else [dirname] in
+    debug_print ("mkdir " ^ String.concat " " flags);
+    Shell.call [Shell.cmd "mkdir" flags]
+  end
+
+let string_of_proc_status = function
+  | Unix.WEXITED code -> sprintf "[Exited: %d]" code
+  | Unix.WSIGNALED sg -> sprintf "[Killed: %d]" sg
+  | Unix.WSTOPPED sg -> sprintf "[Stopped: %d]" sg
+
+let http_get url =
+  try
+    Some (Http_client.Convenience.http_get url)
+  with Http_client.Http_error (code, _) -> None
+