diff options
Diffstat (limited to 'src/grt/grt-files.adb')
| -rw-r--r-- | src/grt/grt-files.adb | 496 |
1 files changed, 27 insertions, 469 deletions
diff --git a/src/grt/grt-files.adb b/src/grt/grt-files.adb index 3b52ac587..0b0430ace 100644 --- a/src/grt/grt-files.adb +++ b/src/grt/grt-files.adb @@ -23,21 +23,11 @@ with Grt.Errors; use Grt.Errors; with Grt.Errors_Exec; use Grt.Errors_Exec; with Grt.Stdio; use Grt.Stdio; -with Grt.C; use Grt.C; with Grt.Table; -with Grt.Options; with System; use System; pragma Elaborate_All (Grt.Table); package body Grt.Files is - subtype C_Files is Grt.Stdio.FILEs; - - -- The end of lines - C_LF : constant int := 10; -- \n - C_CR : constant int := 13; -- \r - - Auto_Flush : constant Boolean := False; - type File_Entry_Type is record -- The corresponding C stream. Stream : C_Files; @@ -59,13 +49,28 @@ package body Grt.Files is Table_Low_Bound => 1, Table_Initial => 2); - function Get_File (Index : Ghdl_File_Index) return C_Files is + function Check_File_Index (Index : Ghdl_File_Index) return Boolean is + begin + return Index in Files_Table.First .. Files_Table.Last; + end Check_File_Index; + + function Get_File_Stream (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; + end Get_File_Stream; + + procedure Set_File_Stream (Index : Ghdl_File_Index; + Stream : C_Files; Kind : Character) is + begin + Files_Table.Table (Index).Stream := Stream; + Files_Table.Table (Index).Kind := Kind; + end Set_File_Stream; + + function Get_File_Signature (Index : Ghdl_File_Index) + return Ghdl_C_String is + begin + return Files_Table.Table (Index).Signature; + end Get_File_Signature; function Is_Open (Index : Ghdl_File_Index) return Boolean is begin @@ -77,46 +82,14 @@ package body Grt.Files is return Files_Table.Table (Index).Kind; end Get_Kind; - 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; - - procedure Check_Read (Index : Ghdl_File_Index; Is_Text : Boolean) is - begin - Check_File_Mode (Index, Is_Text); - - -- LRM08 5.5.2 File operations - -- It is an error if the access mode of the file object is write-only - -- or if the file object is not open. - if not Is_Open (Index) then - Error_Call_Stack ("read called on a non-open file", 2); - end if; - if Get_Kind (Index) /= 'r' then - Error_Call_Stack ("read called on a write-only file", 2); - end if; - end Check_Read; - - procedure Check_Write (Index : Ghdl_File_Index; Is_Text : Boolean) is + function Is_Text_File (Index : Ghdl_File_Index) return Boolean is begin - Check_File_Mode (Index, Is_Text); - - -- LRM08 5.5.2 File operations - -- It is an error if the access mode of the file object is read-only - -- or if the file object is not open. - if not Is_Open (Index) then - Error_Call_Stack ("write called on a non-open file", 2); - end if; - if Get_Kind (Index) = 'r' then - Error_Call_Stack ("write called on a read-only file", 2); - end if; - end Check_Write; + return Files_Table.Table (Index).Is_Text; + end Is_Text_File; - function Create_File - (Is_Text : Boolean; Kind : Character; Sig : Ghdl_C_String) - return Ghdl_File_Index is + function Create_File (Is_Text : Boolean; + Kind : Character; + Sig : Ghdl_C_String) return Ghdl_File_Index is begin Files_Table.Append ((Stream => NULL_Stream, Signature => Sig, @@ -126,12 +99,8 @@ package body Grt.Files is return Files_Table.Last; end Create_File; - procedure Destroy_File (Is_Text : Boolean; Index : Ghdl_File_Index) is + procedure Destroy_File (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 @@ -142,415 +111,4 @@ package body Grt.Files is 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); - - -- LRM93 3.4.1 File Operations - -- LRM08 5.5.2 File Operations - -- It is an error if ENDFILE is called on a file object that is not - -- open. - if Stream = NULL_Stream then - Error_Call_Stack ("endfile with a non-opened file", 1); - end if; - - -- LRM93 3.4.1 File Operations - -- LRM08 5.5.2 File Operations - -- Function ENDFILE always returns TRUE for an open file object whose - -- access mode is write-only. - if Get_Kind (File) /= 'r' then - return True; - end if; - - 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; - Kind : Character; - 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 1 .. Str.Bounds.Dim_1.Length loop - Name (Natural (I)) := Str.Base (I - 1); - end loop; - Name (Name'Last) := NUL; - - case Mode is - when Read_Mode => - Kind := 'r'; - when Write_Mode => - Kind := 'w'; - when Append_Mode => - Kind := 'a'; - when others => - -- Bad mode, cannot happen. - Internal_Error ("file_open: bad open mode"); - end case; - - 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 - Str_Mode (1) := Kind; - 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; - if Grt.Options.Unbuffered_Writes and Mode /= Read_Mode then - setbuf (F, NULL_voids); - 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; - Files_Table.Table (File).Kind := Kind; - - return Open_Ok; - end File_Open; - - procedure Error_Open (Str : Std_String_Ptr) - is - Bt : Backtrace_Addrs; - begin - Save_Backtrace (Bt, 2); - Error_S ("cannot open file """); - Diag_C_Std (Str.Base (0 .. Str.Bounds.Dim_1.Length - 1)); - Diag_C ('"'); - Error_E_Call_Stack (Bt); - end Error_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_Open (Str); - 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_Open (Str); - 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; - Len : size_t; - R : size_t; - begin - Res := Get_File (File); - Check_Write (File, True); - - Len := size_t (Str.Bounds.Dim_1.Length); - if Len = 0 then - return; - end if; - - R := fwrite (Str.Base (0)'Address, Len, 1, Res); - if R /= 1 then - Error ("text_write failed"); - end if; - - if Auto_Flush then - fflush (Res); - end if; - 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; - begin - Res := Get_File (File); - Check_Write (File, False); - - R := fwrite (System.Address (Ptr), size_t (Length), 1, Res); - if R /= 1 then - Error ("write_scalar failed"); - end if; - if Auto_Flush then - fflush (Res); - end if; - 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_Read (File, False); - - 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_Read (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_Call_Stack ("read: end of file reached", 1); - 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 - (File : Ghdl_File_Index; Str : Std_String_Ptr; Len : Std_Integer_Acc) - is - Stream : C_Files; - Max_Len : int; - C : int; - L : Ghdl_Index_Type; - begin - Stream := Get_File (File); - Check_Read (File, True); - - Max_Len := int (Str.Bounds.Dim_1.Length); - - -- Read at most LEN characters, stop at EOL. - L := 0; - for I in 1 .. Max_Len loop - C := fgetc (Stream); - exit when C < 0; - -- Be nice with DOS files: handle CR/CR+LF/LF. - -- Note: LF+CR is not handled, so that on unix we don't need - -- to read the next line. - -- Always return LF as end of line. - if C = C_CR then - C := fgetc (Stream); - if C > 0 and C /= C_LF then - C := ungetc (C, Stream); - pragma Assert (C >= 0); - end if; - C := C_LF; - end if; - Str.Base (L) := Character'Val (C); - L := L + 1; - exit when C = C_LF; - end loop; - - Len.all := Std_Integer (L); - 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; - - procedure Ghdl_File_Flush (File : Ghdl_File_Index) - is - Stream : C_Files; - begin - Stream := Get_File (File); - - -- LRM08 5.5.2 File Operations - -- For the WRITE and FLUSH procedures, it is an error if the access - -- mode of the file object is read-only or if the file is not open. - if Stream = NULL_Stream then - Error_Call_Stack ("flush called on a non-open file", 1); - end if; - if Get_Kind (File) = 'r' then - Error_Call_Stack ("flush called on a read-only file", 1); - end if; - - fflush (Stream); - end Ghdl_File_Flush; end Grt.Files; |