* http://helm.cs.unibo.it/
*)
+(* $Id$ *)
+
open Http_getter_types;;
open Printf;;
(patch_doctype ?via_http () (patch_entity ?via_http () line))
let return_file
- ~fname ?contype ?contenc
- ?(patch_fun = fun x -> x) ?(gunzip = false) ?(via_http = true) outchan
- =
- let headers =
- match (contype, contenc) with
- | (Some t, Some e) -> ["Content-Encoding", e; "Content-Type", t]
- | (Some t, None) -> ["Content-Type" , t]
- | (None, Some e) -> ["Content-Encoding", e]
- | (None, None) -> []
- in
+ ~fname ?contype ?contenc ?patch_fun ?(gunzip = false) ?(via_http = true)
+ ~enc outchan
+=
if via_http then begin
+ let headers =
+ match (contype, contenc) with
+ | (Some t, Some e) -> ["Content-Encoding", e; "Content-Type", t]
+ | (Some t, None) -> ["Content-Type" , t]
+ | (None, Some e) -> ["Content-Encoding", e]
+ | (None, None) -> []
+ in
Http_daemon.send_basic_headers ~code:(`Code 200) outchan;
Http_daemon.send_headers headers outchan;
Http_daemon.send_CRLF outchan
end;
- if gunzip then begin (* gunzip needed, uncompress file, apply patch_fun to
- it, compress the result and sent it to client *)
- let (tmp1, tmp2) =
- (Http_getter_misc.tempfile (), Http_getter_misc.tempfile ())
- in
- try
- Http_getter_misc.gunzip ~keep:true ~output:tmp1 fname;(* gunzip to tmp1 *)
- let new_file = open_out tmp2 in
- Http_getter_misc.iter_file (* tmp2 = patch(tmp1) *)
- (fun line ->
- output_string new_file (patch_fun line ^ "\n");
- flush outchan)
- tmp1;
- close_out new_file;
- Http_getter_misc.gzip ~output:tmp1 tmp2; (* tmp1 = gzip(tmp2); rm tmp2 *)
- Http_getter_misc.iter_file (* send tmp1 to client as is*)
- (fun line -> output_string outchan (line ^ "\n"); flush outchan)
- tmp1;
- Sys.remove tmp1 (* rm tmp1 *)
- with e ->
- Sys.remove tmp1;
- raise e
- end else begin (* no need to gunzip, apply patch_fun directly to file *)
- Http_getter_misc.iter_file
- (fun line -> output_string outchan (patch_fun line ^ "\n"); flush outchan)
- fname;
- end
+ match gunzip, patch_fun with
+ | true, Some patch_fun ->
+ Http_getter_logger.log ~level:2
+ "Patch required, uncompress/compress cycle needed :-(";
+ (* gunzip needed, uncompress file, apply patch_fun to it, compress the
+ * result and sent it to client *)
+ let (tmp1, tmp2) =
+ (Http_getter_misc.tempfile (), Http_getter_misc.tempfile ())
+ in
+ (try
+ Http_getter_misc.gunzip ~keep:true ~output:tmp1 fname; (* gunzip tmp1 *)
+ let new_file = open_out tmp2 in
+ Http_getter_misc.iter_file (* tmp2 = patch(tmp1) *)
+ (fun line ->
+ output_string new_file (patch_fun line ^ "\n");
+ flush outchan)
+ tmp1;
+ close_out new_file;
+ Http_getter_misc.gzip ~output:tmp1 tmp2;(* tmp1 = gzip(tmp2); rm tmp2 *)
+ Http_getter_misc.iter_file (* send tmp1 to client as is*)
+ (fun line -> output_string outchan (line ^ "\n"); flush outchan)
+ tmp1;
+ Sys.remove tmp1 (* rm tmp1 *)
+ with e ->
+ Sys.remove tmp1;
+ raise e)
+ | false, Some patch_fun ->
+ (match enc with
+ | `Normal ->
+ Http_getter_misc.iter_file
+ (fun line -> output_string outchan (patch_fun (line ^ "\n")))
+ fname
+ | `Gzipped -> assert false)
+ (* dangerous case, if this happens it needs to be investigated *)
+ | _, None -> Http_getter_misc.iter_file_data (output_string outchan) fname
;;