i-cstrea.ads: (fopen): Add encoding parameter.

2007-04-06  Pascal Obry  <obry@adacore.com>

	* i-cstrea.ads: (fopen): Add encoding parameter.
	(freopen): Idem.
	Change reference from a-sysdep.c to sysdep.c in comment.
	Update copyright notice.
	This set of patch add support for the encoding form parameter.

	* mingw32.h (S2WSU): New macro to convert from a string to a
	wide-string using the UTF-8 encoding. The S2WS macro supports now only
	standard 8bits encoding.
	(WS2SU): As above but converting from wide-sring to string.
	This is needed as it is necessary to have access to both versions in the
	runtime for the form parameter encoding support.
	This set of patch add support for the encoding form parameter.
	(S2WS): Improve implementation to handle cases where the filename is not
	UTF-8 encoded. In this case we default to using the current code page
	for the conversion.

	* s-crtl-vms64.ads, s-crtl.ads (Filename_Encoding): New enumeration
	type (UTF8, ASCII_8bits). This enumeration has a rep clause to match
	the constants defined in adaint.h.
	(fopen): Add encoding parameter.
	(freopen): Idem.

	* s-ficobl.ads (AFCB): Add Encoding field to record the filename
	encoding. This is needed for the Reset routine (freopen low level-call).

	* s-fileio.adb (Open): Decode encoding form parameter and set the
	corresponding encoding value into AFCB structure.
	(Reset): Pass the encoding value to freopen.
	(Close): Move the call to Lock_Task to the beginning of the procedure.

From-SVN: r123578

1 files changed, 14 insertions, 4 deletions

diff --git a/gcc/ada/s-crtl-vms64.ads b/gcc/ada/s-crtl-vms64.ads
index 83292b7..c221d05 100644
--- a/gcc/ada/s-crtl-vms64.ads
+++ b/gcc/ada/s-crtl-vms64.ads
@@ -57,6 +57,11 @@ package System.CRTL is
 
    type size_t is mod 2 ** Standard'Address_Size;
 
+   type Filename_Encoding is (UTF8, ASCII_8bits);
+   for Filename_Encoding use (UTF8 => 0, ASCII_8bits => 1);
+   pragma Convention (C, Filename_Encoding);
+   --  Describes the filename's encoding
+
    function atoi (A : System.Address) return Integer;
    pragma Import (C, atoi, "decc$atoi");
 
@@ -84,8 +89,11 @@ package System.CRTL is
    function fgets (strng : chars; n : int; stream : FILEs) return chars;
    pragma Import (C, fgets, "decc$_fgets64");
 
-   function fopen (filename : chars; Mode : chars) return FILEs;
-   pragma Import (C, fopen, "decc$fopen");
+   function fopen
+     (filename : chars;
+      mode     : chars;
+      encoding : Filename_Encoding := UTF8) return FILEs;
+   pragma Import (C, fopen, "__gnat_fopen");
 
    function fputc (C : int; stream : FILEs) return int;
    pragma Import (C, fputc, "decc$fputc");
@@ -99,9 +107,10 @@ package System.CRTL is
    function freopen
      (filename : chars;
       mode     : chars;
-      stream   : FILEs)
+      stream   : FILEs;
+      encoding : Filename_Encoding := UTF8)
       return     FILEs;
-   pragma Import (C, freopen, "decc$freopen");
+   pragma Import (C, freopen, "__gnat_freopen");
 
    function fseek
      (stream : FILEs;
@@ -175,4 +184,5 @@ package System.CRTL is
 
    function write (fd : int; buffer : chars; nbytes : int) return int;
    pragma Import (C, write, "decc$write");
+
 end System.CRTL;