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unit cutils;
{$mode objfpc}{$H+}
interface
uses
{$IFDEF MSWINDOWS}
Windows, WinSock2,
{$ELSE}
BaseUnix,
{$ENDIF}
ctypes;
const
LIB_NAME = {$IFDEF MSWINDOWS}'msvcrt'{$ELSE}'c'{$ENDIF};
{$IFDEF UNIX}
UINT16_MAX = 65535;
{$ENDIF}
SEEK_SET = 0;
SEEK_CUR = 1;
SEEK_END = 2;
{$IFDEF MSWINDOWS}
DELTA_EPOCH_IN_MICROSECS: culonglong = 11644473600000000;
{$ENDIF}
type
{$IFDEF UNIX}
__off_t = longint;
{$ENDIF}
Pcchar = PAnsiChar;
Ppcchar = ^Pcchar;
FILEptr = ^File;
seek_mode = longint;
open_mode = (fopenread, fopenwrite, fappendwrite);
{$IFDEF MSWINDOWS}
function fpgettimeofday(tv: PTimeVal; tz: PTimeZone): cint;
procedure _tzset; cdecl; external LIB_NAME name '_tzset';
function _timezone: cint; cdecl; external LIB_NAME name '_timezone';
function _daylight: clong; cdecl; external LIB_NAME name '__daylight';
{$ENDIF}
{$IFDEF UNIX}
function sscanf(s: Pcchar; format: Pcchar): cint; cdecl; varargs; external LIB_NAME name 'sscanf';
function lseek(fd: cint; offset: __off_t; whence: cint): __off_t; cdecl; external LIB_NAME name 'lseek';
function isprint(p: Char): cint; cdecl; external LIB_NAME name 'isprint';
function strdup(para1: Pcchar): Pcchar; cdecl; external LIB_NAME name 'strdup';
function strchr(para1: Pcchar; para2: cint): Pcchar; cdecl; external LIB_NAME name 'strchr';
function strstr(haystack: Pcchar; needle: Pcchar): Pcchar; cdecl; external LIB_NAME name 'strstr';
function sprintf(s: Pcchar; format: Pcchar): cint; cdecl; varargs; external LIB_NAME name 'sprintf';
function asprintf(resultp: Ppcchar; format: Pcchar): cint; cdecl; varargs; external LIB_NAME name 'asprintf';
function errno: PInteger; cdecl; external LIB_NAME name '__errno_location';
{$ENDIF}
function memset(s: pointer; c: longint; n: size_t): pointer; cdecl; external LIB_NAME name 'memset';
function snprintf(str: Pcchar; size: size_t; format: Pcchar): cint; cdecl; varargs; external LIB_NAME Name {$IFDEF MSWINDOWS}'_snprintf'{$ELSE}'snprintf'{$ENDIF};
function rand: cint; cdecl; external LIB_NAME name 'rand';
function strerror(errnum: cint): Pchar; cdecl; external LIB_NAME name 'strerror';
function strncat(a, b: Pcchar; sz: size_t): Pchar; cdecl; external LIB_NAME name 'strncat';
function strcpy(a, b: Pcchar): Pchar; cdecl; external LIB_NAME name 'strcpy';
function strncmp(a, b: Pcchar; sz: size_t): cint; cdecl; external LIB_NAME name 'strncmp';
function fopen(filename: PAnsiChar; mode: open_mode): FILEptr;
procedure fclose(fp: FILEptr);
function fseek(fp: FILEptr; recPos: longint; mode: seek_mode): longint;
function fread(buf: pointer; recSize: longint; recCount: longint; fp: FILEptr): longint;
function fwrite(buf: pointer; recSize: longint; recCount: longint; fp: FILEptr): longint;
function ftell(fp: FILEptr): LongInt;
function feof(fp: FILEptr): LongInt;
implementation
{$IFDEF MSWINDOWS}
function fpgettimeofday(tv: PTimeVal; tz: PTimeZone): cint;
const
tzflag: cint = 0;
var
ft: FILETIME;
tmpres: QWord = 0;
begin
if nil <> tv then
begin
GetSystemTimeAsFileTime(@ft);
tmpres := tmpres or ft.dwHighDateTime;
tmpres := tmpres shl 32;
tmpres := tmpres or ft.dwLowDateTime;
tmpres := tmpres div 10;
tmpres -= DELTA_EPOCH_IN_MICROSECS;
tv^.tv_sec := clong(tmpres div culong(1000000));
tv^.tv_usec := clong(tmpres mod culong(1000000));
end;
if nil <> tz then
begin
if tzflag <> 1 then
begin
_tzset;
Inc(tzflag);
end;
tz^.tz_minuteswest := _timezone div 60;
tz^.tz_dsttime := _daylight;
end;
Result := 0;
end;
{$ENDIF}
function fopen(filename: PAnsiChar; mode: open_mode): FILEptr;
var
fp: FILEptr;
OldFileMode: Byte;
begin
fp := nil;
OldFileMode := FileMode;
GetMem(fp, SizeOf(File));
Assign(fp^, StrPas(filename));
{$PUSH}{$I-}
case mode of
fopenread:
begin
FileMode := 0;
Reset(fp^, 1);
end;
fopenwrite:
begin
FileMode := 1;
ReWrite(fp^, 1);
end;
fappendwrite:
begin
FileMode := 2;
Reset(fp^, 1);
if IOResult = 2 then
ReWrite(fp^, 1);
Seek(fp^, FileSize(fp^));
end;
end;
FileMode := OldFileMode;
{$POP}
if IOResult <> 0 then
begin
FreeMem(fp, SizeOf(File));
fp := nil;
end;
fopen := fp;
end;
procedure fclose(fp : FILEptr);
begin
if Assigned(fp) then
begin
{$PUSH}{$I-}
Close(fp^);
{$POP}
if IOresult = 0 then
FreeMem(fp, SizeOf(File));
end;
end;
function fread(buf: Pointer; recSize: LongInt; recCount: LongInt;
fp : FILEptr): LongInt;
var
totalSize, readcount : LongInt;
begin
if Assigned(buf) then
begin
totalSize := recCount * LongInt(recSize);
{$PUSH}{$I-}{$HINTS OFF}
BlockRead(fp^, buf^, totalSize, readcount);
if readcount <> totalSize then
fread := readcount div recSize
else
fread := recCount;
{$POP}
end
else
fread := 0;
end;
function fwrite(buf: Pointer; recSize: LongInt; recCount: LongInt;
fp: FILEptr) : LongInt;
var
totalSize, written: LongInt;
begin
if Assigned(buf) then
begin
totalSize := recCount * LongInt(recSize);
{$PUSH}{$I-}{$HINTS OFF}
BlockWrite(fp^, buf^, totalSize, written);
if written <> totalSize then
fwrite := written div recSize
else
fwrite := recCount;
{$POP}
end
else
fwrite := 0;
end;
function fseek(fp: FILEptr; recPos: LongInt; mode: seek_mode): LongInt;
begin
{$PUSH}{$I-}
case mode of
SEEK_SET: Seek(fp^, recPos);
SEEK_CUR: Seek(fp^, FilePos(fp^) + recPos);
SEEK_END: Seek(fp^, FileSize(fp^) - 1 - recPos);
end;
{$POP}
fseek := IOResult;
end;
function ftell(fp: FILEptr): LongInt;
begin
ftell := FilePos(fp^);
end;
function feof(fp: FILEptr): LongInt;
begin
feof := 0;
if Assigned(fp) then
if eof(fp^) then
feof := 1
else
feof := 0;
end;
end.
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