forked from KolibriOS/kolibrios
139 lines
2.7 KiB
Plaintext
139 lines
2.7 KiB
Plaintext
(*
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BSD 2-Clause License
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Copyright (c) 2019-2020, Anton Krotov
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All rights reserved.
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*)
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MODULE File;
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IMPORT SYSTEM, WINAPI, API;
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CONST
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OPEN_R* = 0; OPEN_W* = 1; OPEN_RW* = 2;
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SEEK_BEG* = 0; SEEK_CUR* = 1; SEEK_END* = 2;
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PROCEDURE Exists* (FName: ARRAY OF CHAR): BOOLEAN;
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VAR
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FindData: WINAPI.TWin32FindData;
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Handle: INTEGER;
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attr: SET;
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BEGIN
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Handle := WINAPI.FindFirstFileA(SYSTEM.ADR(FName[0]), FindData);
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IF Handle # -1 THEN
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WINAPI.FindClose(Handle);
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SYSTEM.GET32(SYSTEM.ADR(FindData.dwFileAttributes), attr);
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IF 4 IN attr THEN
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Handle := -1
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END
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END
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RETURN Handle # -1
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END Exists;
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PROCEDURE Delete* (FName: ARRAY OF CHAR): BOOLEAN;
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RETURN WINAPI.DeleteFileA(SYSTEM.ADR(FName[0])) # 0
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END Delete;
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PROCEDURE Create* (FName: ARRAY OF CHAR): INTEGER;
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RETURN WINAPI.CreateFileA(SYSTEM.ADR(FName[0]), 0C0000000H, 0, NIL, 2, 80H, 0)
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END Create;
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PROCEDURE Close* (F: INTEGER);
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BEGIN
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WINAPI.CloseHandle(F)
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END Close;
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PROCEDURE Open* (FName: ARRAY OF CHAR; Mode: INTEGER): INTEGER;
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VAR
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ofstr: WINAPI.OFSTRUCT;
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BEGIN
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RETURN WINAPI.OpenFile(SYSTEM.ADR(FName[0]), ofstr, Mode)
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END Open;
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PROCEDURE Seek* (F, Offset, Origin: INTEGER): INTEGER;
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RETURN WINAPI.SetFilePointer(F, Offset MOD 100000000H, SYSTEM.ADR(Offset) + 4, Origin)
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END Seek;
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PROCEDURE Read* (F, Buffer, Count: INTEGER): INTEGER;
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VAR
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res: INTEGER;
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BEGIN
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IF WINAPI.ReadFile(F, Buffer, Count, SYSTEM.ADR(res), NIL) = 0 THEN
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res := -1
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END
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RETURN res
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END Read;
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PROCEDURE Write* (F, Buffer, Count: INTEGER): INTEGER;
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VAR
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res: INTEGER;
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BEGIN
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IF WINAPI.WriteFile(F, Buffer, Count, SYSTEM.ADR(res), NIL) = 0 THEN
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res := -1
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END
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RETURN res
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END Write;
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PROCEDURE Load* (FName: ARRAY OF CHAR; VAR Size: INTEGER): INTEGER;
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VAR
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res, n, F: INTEGER;
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BEGIN
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res := 0;
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F := Open(FName, OPEN_R);
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IF F # -1 THEN
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Size := Seek(F, 0, SEEK_END);
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n := Seek(F, 0, SEEK_BEG);
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res := API._NEW(Size);
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IF (res = 0) OR (Read(F, res, Size) # Size) THEN
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IF res # 0 THEN
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res := API._DISPOSE(res);
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Size := 0
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END
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END;
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Close(F)
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END
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RETURN res
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END Load;
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PROCEDURE RemoveDir* (DirName: ARRAY OF CHAR): BOOLEAN;
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RETURN WINAPI.RemoveDirectoryA(SYSTEM.ADR(DirName[0])) # 0
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END RemoveDir;
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PROCEDURE ExistsDir* (DirName: ARRAY OF CHAR): BOOLEAN;
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VAR
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Code: SET;
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BEGIN
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Code := WINAPI.GetFileAttributesA(SYSTEM.ADR(DirName[0]))
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RETURN (Code # {0..31}) & (4 IN Code)
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END ExistsDir;
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PROCEDURE CreateDir* (DirName: ARRAY OF CHAR): BOOLEAN;
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RETURN WINAPI.CreateDirectoryA(SYSTEM.ADR(DirName[0]), NIL) # 0
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END CreateDir;
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END File. |