From: Stefano Zacchiroli <zack@upsilon.cc>
Date: Fri, 4 Feb 2005 13:58:53 +0000 (+0000)
Subject: added gzip support to Xml
X-Git-Tag: V_0_1_0~21
X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=commitdiff_plain;h=cdef799a0e2e3c7db8bb2b95cd124767a4126c61;p=helm.git

added gzip support to Xml
---

diff --git a/helm/ocaml/METAS/meta.helm-xml.src b/helm/ocaml/METAS/meta.helm-xml.src
index 1cd68fed8..7330c766c 100644
--- a/helm/ocaml/METAS/meta.helm-xml.src
+++ b/helm/ocaml/METAS/meta.helm-xml.src
@@ -1,4 +1,4 @@
-requires=""
+requires="zip"
 version="0.0.1"
 archive(byte)="xml.cma"
 archive(native)="xml.cmxa"
diff --git a/helm/ocaml/xml/Makefile b/helm/ocaml/xml/Makefile
index f6c43d228..41a7edaa4 100644
--- a/helm/ocaml/xml/Makefile
+++ b/helm/ocaml/xml/Makefile
@@ -1,5 +1,5 @@
 PACKAGE = xml
-REQUIRES =
+REQUIRES = zip
 PREDICATES =
 
 INTERFACE_FILES = xml.mli
diff --git a/helm/ocaml/xml/xml.ml b/helm/ocaml/xml/xml.ml
index 9dcd16fc0..64c066a1e 100644
--- a/helm/ocaml/xml/xml.ml
+++ b/helm/ocaml/xml/xml.ml
@@ -101,6 +101,10 @@ let pp_to_outchan strm oc =
   flush oc
 ;;
 
+let pp_to_gzipchan strm oc =
+  pp_gen (fun s -> Gzip.output oc s 0 (String.length s)) strm;
+  Gzip.flush oc
+
 (** pretty printer to string *)
 let pp_to_string strm =
   let buf = Buffer.create 10240 in
@@ -112,21 +116,27 @@ let pp_to_string strm =
 (* Usage:                                                                   *)
 (*  pp tokens None     pretty prints the output on stdout                   *)
 (*  pp tokens (Some filename) pretty prints the output on the file filename *)
-let pp ?(quiet=false) strm fn =
-  match fn with
-  | Some filename ->
-      let outchan = open_out filename in
-      (try
-        pp_to_outchan strm outchan;
-      with e ->
-        close_out outchan;
-        raise e);
-      close_out outchan;
-      if not quiet then
-        begin
-          print_string ("\nWriting on file \"" ^ filename ^
-            "\" was succesfull\n");
-          flush stdout
-        end
-  | None -> pp_to_outchan strm stdout
+let pp ?(gzip=false) strm fn =
+  if gzip then
+    match fn with
+    | Some filename ->
+        let outchan = Gzip.open_out filename in
+        (try
+          pp_to_gzipchan strm outchan;
+        with e ->
+          Gzip.close_out outchan;
+          raise e);
+        Gzip.close_out outchan
+    | None -> failwith "Can't sent gzipped output to stdout"
+  else
+    match fn with
+    | Some filename ->
+        let outchan = open_out filename in
+        (try
+          pp_to_outchan strm outchan;
+        with e ->
+          close_out outchan;
+          raise e);
+        close_out outchan
+    | None -> pp_to_outchan strm stdout
 ;;
diff --git a/helm/ocaml/xml/xml.mli b/helm/ocaml/xml/xml.mli
index a48e7d6b9..b1fcbe5b0 100644
--- a/helm/ocaml/xml/xml.mli
+++ b/helm/ocaml/xml/xml.mli
@@ -63,8 +63,9 @@ val xml_cdata : string -> token Stream.t
 (* The pretty printer for streams of token                                  *)
 (* Usage:                                                                   *)
 (*  pp tokens None     pretty prints the output on stdout                   *)
-(*  pp tokens (Some filename) pretty prints the output on the file filename *)
-val pp : ?quiet:bool -> token Stream.t -> string option -> unit
+(*  pp tokens (Some filename) pretty prints the output on the file filename
+* @param gzip if set to true files are gzipped. Defaults to false *)
+val pp : ?gzip:bool -> token Stream.t -> string option -> unit
 val pp_to_outchan : token Stream.t -> out_channel -> unit
 val pp_to_string : token Stream.t -> string