First import from sources

1 files changed, 429 insertions, 0 deletions

diff --git a/translate/grt/grt-files.adb b/translate/grt/grt-files.adb
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+--  GHDL Run Time (GRT) -  VHDL files subprograms.
+--  Copyright (C) 2002, 2003, 2004, 2005 Tristan Gingold
+--
+--  GHDL is free software; you can redistribute it and/or modify it under
+--  the terms of the GNU General Public License as published by the Free
+--  Software Foundation; either version 2, or (at your option) any later
+--  version.
+--
+--  GHDL is distributed in the hope that it will be useful, but WITHOUT ANY
+--  WARRANTY; without even the implied warranty of MERCHANTABILITY or
+--  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+--  for more details.
+--
+--  You should have received a copy of the GNU General Public License
+--  along with GCC; see the file COPYING.  If not, write to the Free
+--  Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+--  02111-1307, USA.
+with Grt.Errors; use Grt.Errors;
+with Grt.Stdio; use Grt.Stdio;
+with GNAT.Table;
+with System; use System;
+
+package body Grt.Files is
+   subtype C_Files is Grt.Stdio.FILEs;
+
+   type File_Entry_Type is record
+      Stream : C_Files;
+      Signature : Ghdl_C_String;
+      Is_Text : Boolean;
+      Is_Alive : Boolean;
+   end record;
+
+   package Files_Table is new GNAT.Table
+     (Table_Component_Type => File_Entry_Type,
+      Table_Index_Type => Ghdl_File_Index,
+      Table_Low_Bound => 1,
+      Table_Initial => 2,
+      Table_Increment => 100);
+
+   function Get_File (Index : Ghdl_File_Index) return C_Files
+   is
+   begin
+      if Index not in Files_Table.First .. Files_Table.Last then
+         Internal_Error ("get_file: bad file index");
+      end if;
+      return Files_Table.Table (Index).Stream;
+   end Get_File;
+
+   procedure Check_File_Mode (Index : Ghdl_File_Index; Is_Text : Boolean)
+   is
+   begin
+      if Files_Table.Table (Index).Is_Text /= Is_Text then
+         Internal_Error ("check_file_mode: bad file mode");
+      end if;
+   end Check_File_Mode;
+
+   function Create_File (Is_Text : Boolean; Sig : Ghdl_C_String)
+                        return Ghdl_File_Index
+   is
+      Res : Ghdl_File_Index;
+   begin
+      Files_Table.Increment_Last;
+      Res := Files_Table.Last;
+      Files_Table.Table (Res) := (Stream => NULL_Stream,
+                                  Signature => Sig,
+                                  Is_Text => Is_Text,
+                                  Is_Alive => True);
+      return Res;
+   end Create_File;
+
+   procedure Destroy_File (Is_Text : Boolean; Index : Ghdl_File_Index) is
+   begin
+      if Get_File (Index) /= NULL_Stream then
+         Internal_Error ("destroy_file");
+      end if;
+      Check_File_Mode (Index, Is_Text);
+      Files_Table.Table (Index).Is_Alive := False;
+      if Index = Files_Table.Last then
+         while Files_Table.Last >= Files_Table.First
+           and then Files_Table.Table (Files_Table.Last).Is_Alive = False
+         loop
+            Files_Table.Decrement_Last;
+         end loop;
+      end if;
+   end Destroy_File;
+
+   procedure File_Error (File : Ghdl_File_Index)
+   is
+      pragma Unreferenced (File);
+   begin
+      Internal_Error ("file: IO error");
+   end File_Error;
+
+   function Ghdl_Text_File_Elaborate return Ghdl_File_Index is
+   begin
+      return Create_File (True, null);
+   end Ghdl_Text_File_Elaborate;
+
+   function Ghdl_File_Elaborate (Sig : Ghdl_C_String) return Ghdl_File_Index
+   is
+   begin
+      return Create_File (False, Sig);
+   end Ghdl_File_Elaborate;
+
+   procedure Ghdl_Text_File_Finalize (File : Ghdl_File_Index) is
+   begin
+      Destroy_File (True, File);
+   end Ghdl_Text_File_Finalize;
+
+   procedure Ghdl_File_Finalize (File : Ghdl_File_Index) is
+   begin
+      Destroy_File (False, File);
+   end Ghdl_File_Finalize;
+
+   function Ghdl_File_Endfile (File : Ghdl_File_Index) return Boolean
+   is
+      Stream : C_Files;
+      C : int;
+   begin
+      Stream := Get_File (File);
+      if feof (Stream) /= 0 then
+         return True;
+      end if;
+      C := fgetc (Stream);
+      if C < 0 then
+         return True;
+      end if;
+      if ungetc (C, Stream) /= C then
+         Error ("internal error: ungetc");
+      end if;
+      return False;
+   end Ghdl_File_Endfile;
+
+   Sig_Header : constant String := "#GHDL-BINARY-FILE-0.0" & Nl;
+
+   function File_Open (File : Ghdl_File_Index;
+                       Mode : Ghdl_I32;
+                       Str : Std_String_Ptr)
+     return Ghdl_I32
+   is
+      Name : String (1 .. Integer (Str.Bounds.Dim_1.Length) + 1);
+      Str_Mode : String (1 .. 3);
+      F : C_Files;
+      Sig : Ghdl_C_String;
+      Sig_Len : Natural;
+   begin
+      F := Get_File (File);
+
+      if F /= NULL_Stream then
+         --  File was already open.
+         return Status_Error;
+      end if;
+
+      --  Copy file name and convert it to a C string (NUL terminated).
+      for I in 0 .. Str.Bounds.Dim_1.Length - 1 loop
+         Name (1 + Natural (I)) := Str.Base (I);
+      end loop;
+      Name (Name'Last) := NUL;
+
+      if Name = "STD_INPUT" & NUL then
+         if Mode /= Read_Mode then
+            return Mode_Error;
+         end if;
+         F := stdin;
+      elsif Name = "STD_OUTPUT" & NUL then
+         if Mode /= Write_Mode then
+            return Mode_Error;
+         end if;
+         F := stdout;
+      else
+         case Mode is
+            when Read_Mode =>
+               Str_Mode (1) := 'r';
+            when Write_Mode =>
+               Str_Mode (1) := 'w';
+            when Append_Mode =>
+               Str_Mode (1) := 'a';
+            when others =>
+               --  Bad mode, cannot happen.
+               Internal_Error ("file_open: bad open mode");
+         end case;
+         if Files_Table.Table (File).Is_Text then
+            Str_Mode (2) := NUL;
+         else
+            Str_Mode (2) := 'b';
+            Str_Mode (3) := NUL;
+         end if;
+         F := fopen (Name'Address, Str_Mode'Address);
+         if F = NULL_Stream then
+            return Name_Error;
+         end if;
+      end if;
+      Sig := Files_Table.Table (File).Signature;
+      if Sig /= null then
+         Sig_Len := strlen (Sig);
+         case Mode is
+            when Write_Mode =>
+               if fwrite (Sig_Header'Address, 1, Sig_Header'Length, F)
+                 /= Sig_Header'Length
+               then
+                  File_Error (File);
+               end if;
+               if fwrite (Sig (1)'Address, 1, size_t (Sig_Len), F)
+                 /= size_t (Sig_Len)
+               then
+                  File_Error (File);
+               end if;
+            when Read_Mode =>
+               declare
+                  Hdr : String (1 .. Sig_Header'Length);
+                  Sig_Buf : String (1 .. Sig_Len);
+               begin
+                  if fread (Hdr'Address, 1, Hdr'Length, F) /= Hdr'Length then
+                     File_Error (File);
+                  end if;
+                  if Hdr /= Sig_Header then
+                     File_Error (File);
+                  end if;
+                  if fread (Sig_Buf'Address, 1, Sig_Buf'Length, F)
+                    /= Sig_Buf'Length
+                  then
+                     File_Error (File);
+                  end if;
+                  if Sig_Buf /= Sig (1 .. Sig_Len) then
+                     File_Error (File);
+                  end if;
+               end;
+            when Append_Mode =>
+               null;
+            when others =>
+               null;
+         end case;
+      end if;
+      Files_Table.Table (File).Stream := F;
+      return Open_Ok;
+   end File_Open;
+
+   procedure Ghdl_Text_File_Open
+     (File : Ghdl_File_Index; Mode : Ghdl_I32; Str : Std_String_Ptr)
+   is
+      Res : Ghdl_I32;
+   begin
+      Check_File_Mode (File, True);
+
+      Res := File_Open (File, Mode, Str);
+
+      if Res /= Open_Ok then
+         Error_C ("open: cannot open text file ");
+         Error_E (String (Str.Base (0 .. Str.Bounds.Dim_1.Length - 1)));
+      end if;
+   end Ghdl_Text_File_Open;
+
+   procedure Ghdl_File_Open
+     (File : Ghdl_File_Index; Mode : Ghdl_I32; Str : Std_String_Ptr)
+   is
+      Res : Ghdl_I32;
+   begin
+      Check_File_Mode (File, False);
+
+      Res := File_Open (File, Mode, Str);
+
+      if Res /= Open_Ok then
+         Error_C ("open: cannot open file ");
+         Error_E (String (Str.Base (0 .. Str.Bounds.Dim_1.Length - 1)));
+      end if;
+   end Ghdl_File_Open;
+
+   function Ghdl_Text_File_Open_Status
+     (File : Ghdl_File_Index; Mode : Ghdl_I32; Str : Std_String_Ptr)
+     return Ghdl_I32
+   is
+   begin
+      Check_File_Mode (File, True);
+      return File_Open (File, Mode, Str);
+   end Ghdl_Text_File_Open_Status;
+
+   function Ghdl_File_Open_Status
+     (File : Ghdl_File_Index; Mode : Ghdl_I32; Str : Std_String_Ptr)
+     return Ghdl_I32
+   is
+   begin
+      Check_File_Mode (File, False);
+      return File_Open (File, Mode, Str);
+   end Ghdl_File_Open_Status;
+
+   procedure Ghdl_Text_Write (File : Ghdl_File_Index; Str : Std_String_Ptr)
+   is
+      Res : C_Files;
+      R : size_t;
+      R1 : int;
+   begin
+      Res := Get_File (File);
+      Check_File_Mode (File, True);
+      if Res = NULL_Stream then
+         Error ("write to a non-opened file");
+      end if;
+      --  FIXME: check mode.
+      R := fwrite (Str.Base (0)'Address,
+                   size_t (Str.Bounds.Dim_1.Length), 1, Res);
+      --  FIXME: check r
+      --  Write '\n'.
+      R1 := fputc (Character'Pos (Nl), Res);
+      R1 := fflush (Res);
+   end Ghdl_Text_Write;
+
+   procedure Ghdl_Write_Scalar (File : Ghdl_File_Index;
+                                Ptr : Ghdl_Ptr;
+                                Length : Ghdl_Index_Type)
+   is
+      Res : C_Files;
+      R : size_t;
+      R1 : int;
+   begin
+      Res := Get_File (File);
+      Check_File_Mode (File, False);
+      if Res = NULL_Stream then
+         Error ("write to a non-opened file");
+      end if;
+      --  FIXME: check mode.
+      R := fwrite (System.Address (Ptr), size_t (Length), 1, Res);
+      if R /= 1 then
+         Error ("write_scalar failed");
+      end if;
+      R1 := fflush (Res);
+   end Ghdl_Write_Scalar;
+
+   procedure Ghdl_Read_Scalar (File : Ghdl_File_Index;
+                               Ptr : Ghdl_Ptr;
+                               Length : Ghdl_Index_Type)
+   is
+      Res : C_Files;
+      R : size_t;
+   begin
+      Res := Get_File (File);
+      Check_File_Mode (File, False);
+      if Res = NULL_Stream then
+         Error ("write to a non-opened file");
+      end if;
+      --  FIXME: check mode.
+      R := fread (System.Address (Ptr), size_t (Length), 1, Res);
+      if R /= 1 then
+         Error ("read_scalar failed");
+      end if;
+   end Ghdl_Read_Scalar;
+
+   function Ghdl_Text_Read_Length (File : Ghdl_File_Index;
+                                   Str : Std_String_Ptr)
+     return Std_Integer
+   is
+      Stream : C_Files;
+      C : int;
+      Len : Ghdl_Index_Type;
+   begin
+      Stream := Get_File (File);
+      Check_File_Mode (File, True);
+      Len := Str.Bounds.Dim_1.Length;
+      --  Read until EOL (or EOF).
+      --  Store as much as possible.
+      for I in Ghdl_Index_Type loop
+         C := fgetc (Stream);
+         if C < 0 then
+            Error ("read: end of file reached");
+            return Std_Integer (I);
+         end if;
+         if I < Len then
+            Str.Base (I) := Character'Val (C);
+         end if;
+         --  End of line is '\n' or LF or character # 10.
+         if C = 10 then
+            return Std_Integer (I + 1);
+         end if;
+      end loop;
+      return 0;
+   end Ghdl_Text_Read_Length;
+
+   procedure Ghdl_Untruncated_Text_Read
+     (Res : Ghdl_Untruncated_Text_Read_Result_Acc;
+      File : Ghdl_File_Index;
+      Str : Std_String_Ptr)
+   is
+      Stream : C_Files;
+      Len : int;
+      Idx : Ghdl_Index_Type;
+   begin
+      Stream := Get_File (File);
+      Check_File_Mode (File, True);
+      Len := int (Str.Bounds.Dim_1.Length);
+      if fgets (Str.Base (0)'Address, Len, Stream) = Null_Address then
+         Internal_Error ("ghdl_untruncated_text_read: end of file");
+      end if;
+      --  Compute the length.
+      for I in Ghdl_Index_Type loop
+         if Str.Base (I) = NUL then
+            Idx := I;
+            exit;
+         end if;
+      end loop;
+      Res.Len :=  Std_Integer (Idx);
+   end Ghdl_Untruncated_Text_Read;
+
+   procedure File_Close (File : Ghdl_File_Index; Is_Text : Boolean)
+   is
+      Stream : C_Files;
+   begin
+      Stream := Get_File (File);
+      Check_File_Mode (File, Is_Text);
+      --  LRM 3.4.1  File Operations
+      --  If F is not associated with an external file, then FILE_CLOSE has
+      --  no effect.
+      if Stream = NULL_Stream then
+         return;
+      end if;
+      if fclose (Stream) /= 0 then
+         Internal_Error ("file_close: fclose error");
+      end if;
+      Files_Table.Table (File).Stream := NULL_Stream;
+   end File_Close;
+
+   procedure Ghdl_Text_File_Close (File : Ghdl_File_Index) is
+   begin
+      File_Close (File, True);
+   end Ghdl_Text_File_Close;
+
+   procedure Ghdl_File_Close (File : Ghdl_File_Index) is
+   begin
+      File_Close (File, False);
+   end Ghdl_File_Close;
+end Grt.Files;
+