(* Copyright (C) Doom 2D: Forever Developers
*
* This program 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, version 3 of the License ONLY.
*
* This program 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 this program. If not, see .
*)
{$INCLUDE a_modes.inc}
unit utils;
interface
uses
SysUtils, Classes, md5;
// ////////////////////////////////////////////////////////////////////////// //
type
SSArray = array of ShortString;
const wadExtensions: array [0..6] of AnsiString = (
'.dfz',
'.wad',
'.dfwad',
'.pk3',
'.pak',
'.zip',
'.dfzip'
);
// ////////////////////////////////////////////////////////////////////////// //
type
TUtf8DecoderFast = packed record
public
const Replacement = $FFFD; // replacement char for invalid unicode
const Accept = 0;
const Reject = 12;
private
state: LongWord;
public
codepoint: LongWord; // decoded codepoint (valid only when decoder is in "complete" state)
public
constructor Create (v: Boolean{fuck you, fpc});
procedure reset (); inline;
function complete (): Boolean; inline; // is current character complete? take `codepoint` then
function invalid (): Boolean; inline;
function completeOrInvalid (): Boolean; inline;
// process one byte, return `true` if codepoint is ready
function decode (b: Byte): Boolean; inline; overload;
function decode (c: AnsiChar): Boolean; inline; overload;
end;
// ////////////////////////////////////////////////////////////////////////// //
function getFilenameExt (const fn: AnsiString): AnsiString;
function setFilenameExt (const fn, ext: AnsiString): AnsiString;
function forceFilenameExt (const fn, ext: AnsiString): AnsiString;
// rewrites slashes to '/'
function fixSlashes (s: AnsiString): AnsiString;
function isAbsolutePath (const s: AnsiString): Boolean;
function isRootPath (const s: AnsiString): Boolean;
// strips out name from `fn`, leaving trailing slash
function getFilenamePath (const fn: AnsiString): AnsiString;
// ends with '/' or '\'?
function isFilenamePath (const fn: AnsiString): Boolean;
// strips extra trailing slashes in `path, and extra leading slashes in `fn`
// will add slash to `path`, even if `fn` is empty!
function filenameConcat (const path, fn: AnsiString): AnsiString;
// does filename have one of ".wad", ".pk3", ".zip" extensions?
function hasWadExtension (const fn: AnsiString): Boolean;
// does filepath have ".XXX:\" in it?
function isWadPath (const fn: AnsiString): Boolean;
// adds ".wad" extension if filename doesn't have one of ".wad", ".pk3", ".zip"
function addWadExtension (const fn: AnsiString): AnsiString;
// check wad signature
function isWadData (data: Pointer; len: LongWord): Boolean;
// convert number to strig with nice commas
function int64ToStrComma (i: Int64): AnsiString;
function upcase1251 (ch: AnsiChar): AnsiChar; inline;
function locase1251 (ch: AnsiChar): AnsiChar; inline;
function IsValid1251 (ch: Word): Boolean;
function IsPrintable1251 (ch: AnsiChar): Boolean;
function toLowerCase1251 (const s: AnsiString): AnsiString;
// `true` if strings are equal; ignoring case for cp1251
function strEquCI1251 (const s0, s1: AnsiString): Boolean;
function utf8Valid (const s: AnsiString): Boolean;
function utf8to1251 (s: AnsiString): AnsiString;
// findFileCI takes case-insensitive path, traverses it, and rewrites it to
// a case-sensetive one (using real on-disk names). return value means 'success'.
// if some dir or file wasn't found, pathname is undefined (destroyed, but not
// necessarily cleared).
// last name assumed to be a file, not directory (unless `lastIsDir` flag is set).
function findFileCI (var pathname: AnsiString; lastIsDir: Boolean=false): Boolean;
// findDiskWad tries to find the wad file using common wad extensions
// (see `wadExtensions` array).
// returns real on-disk filename, or empty string.
// original wad extension is used as a hint for the first try.
// also, this automatically performs `findFileCI()`.
function findDiskWad (fname: AnsiString): AnsiString;
// slashes must be normalized!
function isWadNamesEqu (wna, wnb: AnsiString): Boolean;
// they throws
function openDiskFileRO (pathname: AnsiString): TStream;
function createDiskFile (pathname: AnsiString): TStream;
// create file if necessary, but don't truncate the existing one
function openDiskFileRW (pathname: AnsiString): TStream;
// little endian
procedure writeSign (st: TStream; const sign: AnsiString);
function checkSign (st: TStream; const sign: AnsiString): Boolean;
procedure writeBool (st: TStream; b: Boolean);
function readBool (st: TStream): Boolean;
procedure writeStr (st: TStream; const str: AnsiString; maxlen: LongWord=65535);
function readStr (st: TStream; maxlen: LongWord=65535): AnsiString;
procedure writeInt (st: TStream; v: Byte); overload;
procedure writeInt (st: TStream; v: ShortInt); overload;
procedure writeInt (st: TStream; v: Word); overload;
procedure writeInt (st: TStream; v: SmallInt); overload;
procedure writeInt (st: TStream; v: LongWord); overload;
procedure writeInt (st: TStream; v: LongInt); overload;
procedure writeInt (st: TStream; v: Int64); overload;
procedure writeInt (st: TStream; v: UInt64); overload;
function readByte (st: TStream): Byte;
function readShortInt (st: TStream): ShortInt;
function readWord (st: TStream): Word;
function readSmallInt (st: TStream): SmallInt;
function readLongWord (st: TStream): LongWord;
function readLongInt (st: TStream): LongInt;
function readInt64 (st: TStream): Int64;
function readUInt64 (st: TStream): UInt64;
// big endian
procedure writeIntBE (st: TStream; v: Byte); overload;
procedure writeIntBE (st: TStream; v: ShortInt); overload;
procedure writeIntBE (st: TStream; v: Word); overload;
procedure writeIntBE (st: TStream; v: SmallInt); overload;
procedure writeIntBE (st: TStream; v: LongWord); overload;
procedure writeIntBE (st: TStream; v: LongInt); overload;
procedure writeIntBE (st: TStream; v: Int64); overload;
procedure writeIntBE (st: TStream; v: UInt64); overload;
function readByteBE (st: TStream): Byte;
function readShortIntBE (st: TStream): ShortInt;
function readWordBE (st: TStream): Word;
function readSmallIntBE (st: TStream): SmallInt;
function readLongWordBE (st: TStream): LongWord;
function readLongIntBE (st: TStream): LongInt;
function readInt64BE (st: TStream): Int64;
function readUInt64BE (st: TStream): UInt64;
function nmin (a, b: Byte): Byte; inline; overload;
function nmin (a, b: ShortInt): ShortInt; inline; overload;
function nmin (a, b: Word): Word; inline; overload;
function nmin (a, b: SmallInt): SmallInt; inline; overload;
function nmin (a, b: LongWord): LongWord; inline; overload;
function nmin (a, b: LongInt): LongInt; inline; overload;
function nmin (a, b: Int64): Int64; inline; overload;
function nmin (a, b: UInt64): UInt64; inline; overload;
function nmin (a, b: Single): Single; inline; overload;
function nmin (a, b: Double): Double; inline; overload;
{$IF DEFINED(CPU386) OR DEFINED(CPUAMD64)}
function nmin (a, b: Extended): Extended; inline; overload;
{$ENDIF}
function nmax (a, b: Byte): Byte; inline; overload;
function nmax (a, b: ShortInt): ShortInt; inline; overload;
function nmax (a, b: Word): Word; inline; overload;
function nmax (a, b: SmallInt): SmallInt; inline; overload;
function nmax (a, b: LongWord): LongWord; inline; overload;
function nmax (a, b: LongInt): LongInt; inline; overload;
function nmax (a, b: Int64): Int64; inline; overload;
function nmax (a, b: UInt64): UInt64; inline; overload;
function nmax (a, b: Single): Single; inline; overload;
function nmax (a, b: Double): Double; inline; overload;
{$IF DEFINED(CPU386) OR DEFINED(CPUAMD64)}
function nmax (a, b: Extended): Extended; inline; overload;
{$ENDIF}
function nclamp (v, a, b: Byte): Byte; inline; overload;
function nclamp (v, a, b: ShortInt): ShortInt; inline; overload;
function nclamp (v, a, b: Word): Word; inline; overload;
function nclamp (v, a, b: SmallInt): SmallInt; inline; overload;
function nclamp (v, a, b: LongWord): LongWord; inline; overload;
function nclamp (v, a, b: LongInt): LongInt; inline; overload;
function nclamp (v, a, b: Int64): Int64; inline; overload;
function nclamp (v, a, b: UInt64): UInt64; inline; overload;
function nclamp (v, a, b: Single): Single; inline; overload;
function nclamp (v, a, b: Double): Double; inline; overload;
{$IF DEFINED(CPU386) OR DEFINED(CPUAMD64)}
function nclamp (v, a, b: Extended): Extended; inline; overload;
{$ENDIF}
type
TFormatStrFCallback = procedure (constref buf; len: SizeUInt);
// returns formatted string if `writerCB` is `nil`, empty string otherwise
function formatstrf (const fmt: AnsiString; const args: array of const; writerCB: TFormatStrFCallback=nil): AnsiString;
function wchar2win (wc: WideChar): AnsiChar; inline;
function utf2win (const s: AnsiString): AnsiString;
function win2utf (const s: AnsiString): AnsiString;
function digitInBase (ch: AnsiChar; base: Integer): Integer;
// returns string in single or double quotes
// single quotes supports only pascal-style '' for single quote char
// double quotes supports c-style escapes
// function will select quote mode automatically
function quoteStr (const s: AnsiString): AnsiString;
type
generic TSimpleList = class
private
//type PItemT = ^ItemT;
type TItemArr = array of ItemT;
public
type
TEnumerator = record
private
mItems: TItemArr;
mCount: Integer;
mCurrent: Integer;
public
constructor Create (const aitems: TItemArr; acount: Integer);
function MoveNext: Boolean;
function getCurrent (): ItemT;
property Current: ItemT read getCurrent;
end;
private
mItems: TItemArr;
mCount: Integer; // can be less than `mItems` size
private
function getAt (idx: Integer): ItemT; inline;
procedure setAt (idx: Integer; const it: ItemT); inline;
function getCapacity (): Integer; inline;
procedure setCapacity (v: Integer); inline;
public
constructor Create (acapacity: Integer=-1);
destructor Destroy (); override;
//WARNING! don't change list contents in `for ... in`!
function GetEnumerator (): TEnumerator;
procedure reset (); inline; // won't resize `mItems`
procedure clear (); inline;
procedure append (constref it: ItemT); inline;
procedure delete (idx: Integer); inline;
function remove (idx: Integer): ItemT; inline;
public
property count: Integer read mCount;
property capacity: Integer read getCapacity write setCapacity;
property at[idx: Integer]: ItemT read getAt write setAt; default;
end;
procedure FillMemory (Dest: Pointer; Len: LongWord; Ch: Byte); inline;
procedure CopyMemory (Dest: Pointer; Src: Pointer; Len: LongWord); inline;
procedure ZeroMemory (Dest: Pointer; Len: LongWord); inline;
type
TDiskFileInfo = record
diskName: AnsiString;
size: LongInt;
age: LongInt;
// not changed by info getter; used in other parts of the code
userName: AnsiString;
tag: Integer;
hash: TMD5Digest;
udata: Pointer;
end;
function GetDiskFileInfo (fname: AnsiString; var info: TDiskFileInfo): Boolean;
implementation
uses
xstreams;
// ////////////////////////////////////////////////////////////////////////// //
procedure CopyMemory (Dest: Pointer; Src: Pointer; Len: LongWord); inline;
begin
Move(Src^, Dest^, Len);
end;
procedure FillMemory (Dest: Pointer; Len: LongWord; Ch: Byte); inline;
begin
FillChar(Dest^, Len, Ch);
end;
procedure ZeroMemory (Dest: Pointer; Len: LongWord); inline;
begin
FillChar(Dest^, Len, 0);
end;
// ////////////////////////////////////////////////////////////////////////// //
// rewrites slashes to '/'
function fixSlashes (s: AnsiString): AnsiString;
{$IFDEF WINDOWS}
var
f: Integer;
{$ENDIF}
begin
result := s;
{$IFDEF WINDOWS}
for f := 1 to length(result) do if (result[f] = '\') then result[f] := '/';
{$ENDIF}
end;
function isAbsolutePath (const s: AnsiString): Boolean;
begin
result := false;
if (length(s) = 0) then exit;
{$IFDEF WINDOWS}
if (s[1] = '/') or (s[1] = '\') then begin result := true; exit; end;
if (length(s) > 2) and (s[2] = ':') and ((s[3] = '/') or (s[3] = '\')) then begin result := true; exit; end;
{$ELSE}
result := (s[1] = '/');
{$ENDIF}
end;
function isRootPath (const s: AnsiString): Boolean;
begin
result := false;
if (length(s) = 0) then exit;
{$IFDEF WINDOWS}
if (s = '/') or (s = '\') then begin result := true; exit; end;
if (length(s) = 3) and (s[2] = ':') and ((s[3] = '/') or (s[3] = '\')) then begin result := true; exit; end;
{$ELSE}
result := (s = '/');
{$ENDIF}
end;
// ////////////////////////////////////////////////////////////////////////// //
constructor TSimpleList.TEnumerator.Create (const aitems: TItemArr; acount: Integer);
begin
mItems := aitems;
mCurrent := -1;
mCount := acount;
end;
function TSimpleList.TEnumerator.MoveNext: Boolean;
begin
Inc(mCurrent);
result := (mCurrent < mCount);
end;
function TSimpleList.TEnumerator.getCurrent (): ItemT;
begin
result := mItems[mCurrent];
end;
// ////////////////////////////////////////////////////////////////////////// //
constructor TSimpleList.Create (acapacity: Integer=-1);
begin
mItems := nil;
if (acapacity > 0) then SetLength(mItems, acapacity);
mCount := 0;
end;
destructor TSimpleList.Destroy ();
begin
mItems := nil;
inherited;
end;
function TSimpleList.getCapacity (): Integer; inline;
begin
result := Length(mItems);
end;
procedure TSimpleList.setCapacity (v: Integer); inline;
begin
if (v < mCount) then v := mCount;
if (v <> Length(mItems)) then SetLength(mItems, v);
end;
function TSimpleList.GetEnumerator (): TEnumerator;
begin
if (Length(mItems) > 0) then result := TEnumerator.Create(mItems, mCount)
else result := TEnumerator.Create(nil, -1);
end;
procedure TSimpleList.reset (); inline;
begin
mCount := 0;
end;
procedure TSimpleList.clear (); inline;
begin
mItems := nil;
mCount := 0;
end;
function TSimpleList.getAt (idx: Integer): ItemT; inline;
begin
if (idx >= 0) and (idx < mCount) then result := mItems[idx] else result := Default(ItemT);
end;
procedure TSimpleList.setAt (idx: Integer; const it: ItemT); inline;
begin
if (idx >= 0) and (idx < mCount) then mItems[idx] := it;
end;
procedure TSimpleList.append (constref it: ItemT); inline;
var
newsz: Integer;
begin
if (mCount >= Length(mItems)) then
begin
newsz := mCount+(mCount div 3)+128;
SetLength(mItems, newsz);
end;
mItems[mCount] := it;
Inc(mCount);
end;
procedure TSimpleList.delete (idx: Integer); inline;
var
f: Integer;
begin
if (idx >= 0) and (idx < mCount) then
begin
for f := idx+1 to mCount-1 do mItems[f-1] := mItems[f];
end;
end;
function TSimpleList.remove (idx: Integer): ItemT; inline;
var
f: Integer;
begin
if (idx >= 0) and (idx < mCount) then
begin
result := mItems[idx];
for f := idx+1 to mCount-1 do mItems[f-1] := mItems[f];
end
else
begin
result := Default(ItemT);
end;
end;
// ////////////////////////////////////////////////////////////////////////// //
var
wc2shitmap: array[0..65535] of AnsiChar;
wc2shitmapInited: Boolean = false;
// ////////////////////////////////////////////////////////////////////////// //
const
cp1251: array[0..127] of Word = (
$0402,$0403,$201A,$0453,$201E,$2026,$2020,$2021,$20AC,$2030,$0409,$2039,$040A,$040C,$040B,$040F,
$0452,$2018,$2019,$201C,$201D,$2022,$2013,$2014,$FFFD,$2122,$0459,$203A,$045A,$045C,$045B,$045F,
$00A0,$040E,$045E,$0408,$00A4,$0490,$00A6,$00A7,$0401,$00A9,$0404,$00AB,$00AC,$00AD,$00AE,$0407,
$00B0,$00B1,$0406,$0456,$0491,$00B5,$00B6,$00B7,$0451,$2116,$0454,$00BB,$0458,$0405,$0455,$0457,
$0410,$0411,$0412,$0413,$0414,$0415,$0416,$0417,$0418,$0419,$041A,$041B,$041C,$041D,$041E,$041F,
$0420,$0421,$0422,$0423,$0424,$0425,$0426,$0427,$0428,$0429,$042A,$042B,$042C,$042D,$042E,$042F,
$0430,$0431,$0432,$0433,$0434,$0435,$0436,$0437,$0438,$0439,$043A,$043B,$043C,$043D,$043E,$043F,
$0440,$0441,$0442,$0443,$0444,$0445,$0446,$0447,$0448,$0449,$044A,$044B,$044C,$044D,$044E,$044F
);
procedure initShitMap ();
var
f: Integer;
begin
for f := 0 to High(wc2shitmap) do wc2shitmap[f] := '?';
for f := 0 to 127 do wc2shitmap[f] := AnsiChar(f);
for f := 0 to 127 do wc2shitmap[cp1251[f]] := AnsiChar(f+128);
wc2shitmapInited := true;
end;
// ////////////////////////////////////////////////////////////////////////// //
// fast state-machine based UTF-8 decoder; using 8 bytes of memory
// code points from invalid range will never be valid, this is the property of the state machine
const
// see http://bjoern.hoehrmann.de/utf-8/decoder/dfa/
utf8dfa: array[0..$16c-1] of Byte = (
// maps bytes to character classes
$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, // 00-0f
$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, // 10-1f
$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, // 20-2f
$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, // 30-3f
$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, // 40-4f
$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, // 50-5f
$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, // 60-6f
$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, // 70-7f
$01,$01,$01,$01,$01,$01,$01,$01,$01,$01,$01,$01,$01,$01,$01,$01, // 80-8f
$09,$09,$09,$09,$09,$09,$09,$09,$09,$09,$09,$09,$09,$09,$09,$09, // 90-9f
$07,$07,$07,$07,$07,$07,$07,$07,$07,$07,$07,$07,$07,$07,$07,$07, // a0-af
$07,$07,$07,$07,$07,$07,$07,$07,$07,$07,$07,$07,$07,$07,$07,$07, // b0-bf
$08,$08,$02,$02,$02,$02,$02,$02,$02,$02,$02,$02,$02,$02,$02,$02, // c0-cf
$02,$02,$02,$02,$02,$02,$02,$02,$02,$02,$02,$02,$02,$02,$02,$02, // d0-df
$0a,$03,$03,$03,$03,$03,$03,$03,$03,$03,$03,$03,$03,$04,$03,$03, // e0-ef
$0b,$06,$06,$06,$05,$08,$08,$08,$08,$08,$08,$08,$08,$08,$08,$08, // f0-ff
// maps a combination of a state of the automaton and a character class to a state
$00,$0c,$18,$24,$3c,$60,$54,$0c,$0c,$0c,$30,$48,$0c,$0c,$0c,$0c, // 100-10f
$0c,$0c,$0c,$0c,$0c,$0c,$0c,$0c,$0c,$00,$0c,$0c,$0c,$0c,$0c,$00, // 110-11f
$0c,$00,$0c,$0c,$0c,$18,$0c,$0c,$0c,$0c,$0c,$18,$0c,$18,$0c,$0c, // 120-12f
$0c,$0c,$0c,$0c,$0c,$0c,$0c,$18,$0c,$0c,$0c,$0c,$0c,$18,$0c,$0c, // 130-13f
$0c,$0c,$0c,$0c,$0c,$18,$0c,$0c,$0c,$0c,$0c,$0c,$0c,$0c,$0c,$24, // 140-14f
$0c,$24,$0c,$0c,$0c,$24,$0c,$0c,$0c,$0c,$0c,$24,$0c,$24,$0c,$0c, // 150-15f
$0c,$24,$0c,$0c,$0c,$0c,$0c,$0c,$0c,$0c,$0c,$0c);
// ////////////////////////////////////////////////////////////////////////// //
constructor TUtf8DecoderFast.Create (v: Boolean{fuck you, fpc}); begin state := Accept; codepoint := 0; end;
procedure TUtf8DecoderFast.reset (); inline; begin state := Accept; codepoint := 0; end;
function TUtf8DecoderFast.complete (): Boolean; inline; begin result := (state = Accept); end;
function TUtf8DecoderFast.invalid (): Boolean; inline; begin result := (state = Reject); end;
function TUtf8DecoderFast.completeOrInvalid (): Boolean; inline; begin result := (state = Accept) or (state = Reject); end;
function TUtf8DecoderFast.decode (c: AnsiChar): Boolean; inline; overload; begin result := decode(Byte(c)); end;
function TUtf8DecoderFast.decode (b: Byte): Boolean; inline; overload;
var
tp: LongWord;
begin
if (state = Reject) then begin state := Accept; codepoint := 0; end;
tp := utf8dfa[b];
if (state <> Accept) then codepoint := (b and $3f) or (codepoint shl 6) else codepoint := ($ff shr tp) and b;
state := utf8dfa[256+state+tp];
if (state = Reject) then begin codepoint := Replacement; state := Accept; end;
result := (state = Accept);
end;
// ////////////////////////////////////////////////////////////////////////// //
function wchar2win (wc: WideChar): AnsiChar; inline;
begin
if not wc2shitmapInited then initShitMap();
if (LongWord(wc) > 65535) then result := '?' else result := wc2shitmap[LongWord(wc)];
end;
// ////////////////////////////////////////////////////////////////////////// //
function utf2win (const s: AnsiString): AnsiString;
var
f, c: Integer;
ud: TUtf8DecoderFast;
begin
for f := 1 to Length(s) do
begin
if (Byte(s[f]) > 127) then
begin
ud := TUtf8DecoderFast.Create(true);
result := '';
for c := 1 to Length(s) do
begin
if ud.decode(s[c]) then result += wchar2win(WideChar(ud.codepoint));
end;
exit;
end;
end;
result := s;
end;
function win2utf (const s: AnsiString): AnsiString;
var
f, c: Integer;
function utf8Encode (code: Integer): AnsiString;
begin
if (code < 0) or (code > $10FFFF) then begin result := '?'; exit; end;
if (code <= $7f) then
begin
result := AnsiChar(code and $ff);
end
else if (code <= $7FF) then
begin
result := AnsiChar($C0 or (code shr 6));
result += AnsiChar($80 or (code and $3F));
end
else if (code <= $FFFF) then
begin
result := AnsiChar($E0 or (code shr 12));
result += AnsiChar($80 or ((code shr 6) and $3F));
result += AnsiChar($80 or (code and $3F));
end
else if (code <= $10FFFF) then
begin
result := AnsiChar($F0 or (code shr 18));
result += AnsiChar($80 or ((code shr 12) and $3F));
result += AnsiChar($80 or ((code shr 6) and $3F));
result += AnsiChar($80 or (code and $3F));
end
else
begin
result := '?';
end;
end;
begin
for f := 1 to Length(s) do
begin
if (Byte(s[f]) > 127) then
begin
result := '';
for c := 1 to Length(s) do
begin
if (Byte(s[c]) < 128) then
begin
result += s[c];
end
else
begin
result += utf8Encode(cp1251[Byte(s[c])-128])
end;
end;
exit;
end;
end;
result := s;
end;
// ////////////////////////////////////////////////////////////////////////// //
function digitInBase (ch: AnsiChar; base: Integer): Integer;
begin
result := -1;
if (base < 1) or (base > 36) then exit;
if (ch < '0') then exit;
if (base <= 10) then
begin
if (Integer(ch) >= 48+base) then exit;
result := Integer(ch)-48;
end
else
begin
if (ch >= '0') and (ch <= '9') then begin result := Integer(ch)-48; exit; end;
if (ch >= 'a') and (ch <= 'z') then Dec(ch, 32); // poor man's tolower()
if (ch < 'A') or (Integer(ch) >= 65+(base-10)) then exit;
result := Integer(ch)-65+10;
end;
end;
// ////////////////////////////////////////////////////////////////////////// //
function quoteStr (const s: AnsiString): AnsiString;
function squote (const s: AnsiString): AnsiString;
var
f: Integer;
begin
result := '''';
for f := 1 to Length(s) do
begin
if (s[f] = '''') then result += '''';
result += s[f];
end;
result += '''';
end;
function dquote (const s: AnsiString): AnsiString;
var
f: Integer;
ch: AnsiChar;
begin
result := '"';
for f := 1 to Length(s) do
begin
ch := s[f];
if (ch = #0) then result += '\z'
else if (ch = #9) then result += '\t'
else if (ch = #10) then result += '\n'
else if (ch = #13) then result += '\r'
else if (ch = #27) then result += '\e'
else if (ch < ' ') or (ch = #127) then
begin
result += '\x';
result += LowerCase(IntToHex(Integer(ch), 2));
end
else if (ch = '"') or (ch = '\') then
begin
result += '\';
result += ch;
end
else
begin
result += ch;
end;
end;
result += '"';
end;
var
needSingle: Boolean = false;
f: Integer;
begin
for f := 1 to Length(s) do
begin
if (s[f] = '''') then begin needSingle := true; continue; end;
if (s[f] < ' ') or (s[f] = #127) then begin result := dquote(s); exit; end;
end;
if needSingle then result := squote(s) else result := ''''+s+'''';
end;
// ////////////////////////////////////////////////////////////////////////// //
function getFilenameExt (const fn: AnsiString): AnsiString;
var
pos: Integer;
ch: AnsiChar;
begin
pos := Length(fn);
while (pos > 0) do
begin
ch := fn[pos];
if (ch = '.') then
begin
if (pos = Length(fn)) then result := '' else result := Copy(fn, pos, Length(fn)-pos+1);
exit;
end;
if (ch = '/') or (ch = '\') then break;
Dec(pos);
end;
result := ''; // no extension
end;
function setFilenameExt (const fn, ext: AnsiString): AnsiString;
var
pos: Integer;
ch: AnsiChar;
begin
result := fn;
if (Length(ext) = 0) or (ext = '.') then exit;
pos := Length(fn);
while (pos > 0) do
begin
ch := fn[pos];
if (ch = '.') then exit;
if (ch = '/') or (ch = '\') then break;
Dec(pos);
end;
if (ext[1] <> '.') then result += '.';
result += ext;
end;
function forceFilenameExt (const fn, ext: AnsiString): AnsiString;
var
pos: Integer;
ch: AnsiChar;
begin
result := fn;
pos := Length(fn);
while (pos > 0) do
begin
ch := fn[pos];
if (ch = '.') then
begin
if (Length(ext) = 0) or (ext = '.') then
begin
result := Copy(fn, 1, pos-1);
end
else
begin
if (ext[1] = '.') then result := Copy(fn, 1, pos-1) else result := Copy(fn, 1, pos);
result += ext;
exit;
end;
end;
if (ch = '/') or (ch = '\') then break;
Dec(pos);
end;
if (Length(ext) > 0) then
begin
if (ext[1] <> '.') then result += '.';
result += ext;
end;
end;
// strips out name from `fn`, leaving trailing slash
function getFilenamePath (const fn: AnsiString): AnsiString;
var
pos: Integer;
ch: AnsiChar;
begin
if (Length(fn) = 0) then begin result := './'; exit; end;
if (fn[Length(fn)] = '/') or (fn[Length(fn)] = '\') then begin result := fn; exit; end;
pos := Length(fn);
while (pos > 0) do
begin
ch := fn[pos];
if (ch = '/') or (ch = '\') then begin result := Copy(fn, 1, pos); exit; end;
Dec(pos);
end;
result := './'; // no path -> current dir
end;
// ends with '/' or '\'?
function isFilenamePath (const fn: AnsiString): Boolean;
begin
if (Length(fn) = 0) then
begin
result := false;
end
else
begin
result := (fn[Length(fn)] = '/') or (fn[Length(fn)] = '\');
end;
end;
// strips extra trailing slashes in `path, and extra leading slashes in `fn`
// will add slash to `path`, even if `fn` is empty!
function filenameConcat (const path, fn: AnsiString): AnsiString;
var
pos: Integer;
begin
pos := 1;
while (pos <= Length(fn)) and ((fn[pos] = '/') or (fn[pos] = '\')) do Inc(pos);
result := path;
if (Length(result) > 0) and ((result[Length(result)] <> '/') and (result[Length(result)] <> '\')) then result += '/';
if (pos <= Length(fn)) then
begin
result += Copy(fn, pos, Length(fn)-pos+1);
//FIXME: make this faster!
while (Length(result) > 0) and ((result[Length(result)] = '/') or (result[Length(result)] = '\')) do
begin
Delete(result, Length(result), 1);
end;
if (fn[Length(fn)] = '/') or (fn[Length(fn)] = '\') then result += '/';
end;
end;
function hasWadExtension (const fn: AnsiString): Boolean;
var
ext, newExt: AnsiString;
begin
ext := getFilenameExt(fn);
result := true;
for newExt in wadExtensions do if (StrEquCI1251(ext, newExt)) then exit;
result := false;
//result := StrEquCI1251(ext, '.wad') or StrEquCI1251(ext, '.pk3') or StrEquCI1251(ext, '.zip') or StrEquCI1251(ext, '.dfz');
end;
function addWadExtension (const fn: AnsiString): AnsiString;
begin
result := fn;
if not hasWadExtension(result) then result := result+'.wad';
end;
function isWadData (data: Pointer; len: LongWord): Boolean;
var p: PChar;
begin
p := PChar(data);
Result :=
(* ZIP *)
((len > 3) and (p[0] = 'P') and (p[1] = 'K') and (p[2] = #03) and (p[3] = #04)) or
((len > 3) and (p[0] = 'P') and (p[1] = 'K') and (p[2] = #05) and (p[3] = #06)) or
(* PACK *)
((len > 3) and (p[0] = 'P') and (p[1] = 'A') and (p[2] = 'C') and (p[3] = 'K')) or
((len > 3) and (p[0] = 'S') and (p[1] = 'P') and (p[2] = 'A') and (p[3] = 'K')) or
(* DFWAD *)
((len > 5) and (p[0] = 'D') and (p[1] = 'F') and (p[2] = 'W') and (p[3] = 'A') and (p[4] = 'D') and (p[5] = #01))
end;
function isWadPath (const fn: AnsiString): Boolean;
var
pos: Integer;
s, wext: AnsiString;
begin
result := false;
pos := 1;
while (pos <= Length(fn)) do
begin
if (fn[pos] = ':') then
begin
if (Length(fn)-pos < 1) then break;
if (pos-4 > 1) and (fn[pos-4] = '.') and ((fn[pos+1] = '\') or (fn[pos+1] = '/')) then
begin
s := Copy(fn, pos-4, 4);
for wext in wadExtensions do
begin
if strEquCI1251(s, wext) then
begin
result := true;
exit;
end;
end;
end;
end;
Inc(pos);
end;
end;
function int64ToStrComma (i: Int64): AnsiString;
var
f: Integer;
begin
Str(i, result);
f := Length(result)+1;
while f > 4 do
begin
Dec(f, 3); Insert(',', result, f);
end;
end;
function upcase1251 (ch: AnsiChar): AnsiChar; inline;
begin
if ch < #128 then
begin
if (ch >= 'a') and (ch <= 'z') then Dec(ch, 32);
end
else
begin
if (ch >= #224) and (ch <= #255) then
begin
Dec(ch, 32);
end
else
begin
case ch of
#184, #186, #191: Dec(ch, 16);
#162, #179: Dec(ch);
end;
end;
end;
result := ch;
end;
function locase1251 (ch: AnsiChar): AnsiChar; inline;
begin
if ch < #128 then
begin
if (ch >= 'A') and (ch <= 'Z') then Inc(ch, 32);
end
else
begin
if (ch >= #192) and (ch <= #223) then
begin
Inc(ch, 32);
end
else
begin
case ch of
#168, #170, #175: Inc(ch, 16);
#161, #178: Inc(ch);
end;
end;
end;
result := ch;
end;
function IsValid1251 (ch: Word): Boolean;
begin
result := ((ch = Ord('?')) or (wc2shitmap[ch] <> '?')) and (ch <> $98)
end;
function IsPrintable1251 (ch: AnsiChar): Boolean;
begin
result := (ch >= #32) and (ch <> #127) and (ch <> #$98)
end;
function strEquCI1251 (const s0, s1: AnsiString): Boolean;
var
i: Integer;
begin
result := false;
if length(s0) <> length(s1) then exit;
for i := 1 to length(s0) do if UpCase1251(s0[i]) <> UpCase1251(s1[i]) then exit;
result := true;
end;
function toLowerCase1251 (const s: AnsiString): AnsiString;
var
f: Integer;
ch: AnsiChar;
begin
for ch in s do
begin
if (ch <> LoCase1251(ch)) then
begin
result := '';
SetLength(result, Length(s));
for f := 1 to Length(s) do result[f] := LoCase1251(s[f]);
exit;
end;
end;
// nothing to do
result := s;
end;
// ////////////////////////////////////////////////////////////////////////// //
// utils
// `ch`: utf8 start
// -1: invalid utf8
function utf8CodeLen (ch: Word): Integer;
begin
if ch < $80 then begin result := 1; exit; end;
if (ch and $FE) = $FC then begin result := 6; exit; end;
if (ch and $FC) = $F8 then begin result := 5; exit; end;
if (ch and $F8) = $F0 then begin result := 4; exit; end;
if (ch and $F0) = $E0 then begin result := 3; exit; end;
if (ch and $E0) = $C0 then begin result := 2; exit; end;
result := -1; // invalid
end;
function utf8Valid (const s: AnsiString): Boolean;
var
pos, len: Integer;
begin
result := false;
pos := 1;
while pos <= length(s) do
begin
len := utf8CodeLen(Byte(s[pos]));
if len < 1 then exit; // invalid sequence start
if pos+len-1 > length(s) then exit; // out of chars in string
Dec(len);
Inc(pos);
// check other sequence bytes
while len > 0 do
begin
if (Byte(s[pos]) and $C0) <> $80 then exit;
Dec(len);
Inc(pos);
end;
end;
result := true;
end;
// ////////////////////////////////////////////////////////////////////////// //
const
uni2wint: array [128..255] of Word = (
$0402,$0403,$201A,$0453,$201E,$2026,$2020,$2021,$20AC,$2030,$0409,$2039,$040A,$040C,$040B,$040F,
$0452,$2018,$2019,$201C,$201D,$2022,$2013,$2014,$003F,$2122,$0459,$203A,$045A,$045C,$045B,$045F,
$00A0,$040E,$045E,$0408,$00A4,$0490,$00A6,$00A7,$0401,$00A9,$0404,$00AB,$00AC,$00AD,$00AE,$0407,
$00B0,$00B1,$0406,$0456,$0491,$00B5,$00B6,$00B7,$0451,$2116,$0454,$00BB,$0458,$0405,$0455,$0457,
$0410,$0411,$0412,$0413,$0414,$0415,$0416,$0417,$0418,$0419,$041A,$041B,$041C,$041D,$041E,$041F,
$0420,$0421,$0422,$0423,$0424,$0425,$0426,$0427,$0428,$0429,$042A,$042B,$042C,$042D,$042E,$042F,
$0430,$0431,$0432,$0433,$0434,$0435,$0436,$0437,$0438,$0439,$043A,$043B,$043C,$043D,$043E,$043F,
$0440,$0441,$0442,$0443,$0444,$0445,$0446,$0447,$0448,$0449,$044A,$044B,$044C,$044D,$044E,$044F
);
function decodeUtf8Char (s: AnsiString; var pos: Integer): AnsiChar;
var
b, c: Integer;
begin
(* The following encodings are valid, except for the 5 and 6 byte
* combinations:
* 0xxxxxxx
* 110xxxxx 10xxxxxx
* 1110xxxx 10xxxxxx 10xxxxxx
* 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
* 111110xx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx
* 1111110x 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx
*)
result := '?';
if pos > length(s) then exit;
b := Byte(s[pos]);
Inc(pos);
if b < $80 then begin result := AnsiChar(b); exit; end;
// mask out unused bits
if (b and $FE) = $FC then b := b and $01
else if (b and $FC) = $F8 then b := b and $03
else if (b and $F8) = $F0 then b := b and $07
else if (b and $F0) = $E0 then b := b and $0F
else if (b and $E0) = $C0 then b := b and $1F
else exit; // invalid utf8
// now continue
while pos <= length(s) do
begin
c := Byte(s[pos]);
if (c and $C0) <> $80 then break; // no more
b := b shl 6;
b := b or (c and $3F);
Inc(pos);
end;
// done, try 1251
for c := 128 to 255 do if uni2wint[c] = b then begin result := AnsiChar(c and $FF); exit; end;
// alas
end;
function utf8to1251 (s: AnsiString): AnsiString;
var
pos: Integer;
begin
if not utf8Valid(s) then begin result := s; exit; end;
pos := 1;
while pos <= length(s) do
begin
if Byte(s[pos]) >= $80 then break;
Inc(pos);
end;
if pos > length(s) then begin result := s; exit; end; // nothing to do here
result := '';
pos := 1;
while pos <= length(s) do result := result+decodeUtf8Char(s, pos);
end;
// ////////////////////////////////////////////////////////////////////////// //
// findFileCI eats case-insensitive path, traverses it and rewrites it to a
// case-sensetive. result value means success.
// if file/dir not founded than pathname is in undefined state!
function findFileCI (var pathname: AnsiString; lastIsDir: Boolean=false): Boolean;
var
sr: TSearchRec;
npt: AnsiString;
newname: AnsiString = '';
curname: AnsiString;
wantdir: Boolean;
attr: LongInt;
foundher: Boolean;
begin
npt := pathname;
result := (length(npt) > 0);
if (length(npt) > 0) and ((npt[1] = '/') or (npt[1] = '\')) then newname := '/';
while length(npt) > 0 do
begin
// remove trailing slashes
while (length(npt) > 0) and ((npt[1] = '/') or (npt[1] = '\')) do Delete(npt, 1, 1);
if length(npt) = 0 then break;
// extract name
curname := '';
while (length(npt) > 0) and (npt[1] <> '/') and (npt[1] <> '\') do
begin
curname := curname+npt[1];
Delete(npt, 1, 1);
end;
// remove trailing slashes again
while (length(npt) > 0) and ((npt[1] = '/') or (npt[1] = '\')) do Delete(npt, 1, 1);
wantdir := lastIsDir or (length(npt) > 0); // do we want directory here?
//writeln(Format('npt=[%s]; newname=[%s]; curname=[%s]; wantdir=%d', [npt, newname, curname, Integer(wantdir)]));
// try the easiest case first
attr := FileGetAttr(newname+curname);
if attr <> -1 then
begin
if wantdir = ((attr and faDirectory) <> 0) then
begin
// i found her!
newname := newname+curname;
if wantdir then newname := newname+'/';
continue;
end;
end;
//writeln(Format('npt=[%s]; newname=[%s]; curname=[%s]; wantdir=%d', [npt, newname, curname, Integer(wantdir)]));
// alas, either not found, or invalid attributes
foundher := false;
try
if FindFirst(newname+'*', faAnyFile, sr) = 0 then
repeat
if (wantdir = ((sr.attr and faDirectory) <> 0)) and StrEquCI1251(sr.name, curname) then
begin
// i found her!
newname := newname+sr.name;
if wantdir then newname := newname+'/';
foundher := true;
break;
end;
until FindNext(sr) <> 0;
finally
FindClose(sr);
end;
if not foundher then begin newname := ''; result := false; break; end;
end;
if result then pathname := newname;
end;
function isWadNamesEqu (wna, wnb: AnsiString): Boolean;
var
ext, newExt: AnsiString;
found: Boolean;
begin
result := StrEquCI1251(wna, wnb);
if result then exit;
// check first ext
ext := getFilenameExt(wna);
found := false;
for newExt in wadExtensions do if (StrEquCI1251(ext, newExt)) then begin found := true; break; end;
if not found then exit;
// check second ext
ext := getFilenameExt(wnb);
found := false;
for newExt in wadExtensions do if (StrEquCI1251(ext, newExt)) then begin found := true; break; end;
if not found then exit;
wna := forceFilenameExt(wna, '');
wnb := forceFilenameExt(wnb, '');
result := StrEquCI1251(wna, wnb);
end;
function findDiskWad (fname: AnsiString): AnsiString;
var
origExt: AnsiString = '';
newExt: AnsiString = '';
begin
result := '';
//writeln('findDiskWad00: fname=<', fname, '>');
if (findFileCI(fname)) then begin result := fname; exit; end;
origExt := getFilenameExt(fname);
fname := forceFilenameExt(fname, '');
//writeln(' findDiskWad01: fname=<', fname, '>; origExt=<', origExt, '>');
for newExt in wadExtensions do
begin
//writeln(' findDiskWad02: fname=<', fname, '>; origExt=<', origExt, '>; newExt=<', newExt, '>');
if (StrEquCI1251(newExt, origExt)) then
begin
//writeln(' SKIP');
continue;
end;
result := fname+newExt;
if (findFileCI(result)) then exit;
end;
result := '';
end;
function openDiskFileRO (pathname: AnsiString): TStream;
begin
if not findFileCI(pathname) then raise EFileNotFoundException.Create('can''t open file "'+pathname+'"');
result := TFileStream.Create(pathname, fmOpenRead or {fmShareDenyWrite}fmShareDenyNone);
end;
function createDiskFile (pathname: AnsiString): TStream;
var
path: AnsiString;
begin
path := ExtractFilePath(pathname);
if length(path) > 0 then
begin
if not findFileCI(path, true) then raise Exception.Create('can''t create file "'+pathname+'"');
end;
result := TFileStream.Create(path+ExtractFileName(pathname), fmCreate);
end;
function openDiskFileRW (pathname: AnsiString): TStream;
var
path: AnsiString;
oldname: AnsiString;
begin
//writeln('*** TRYING R/W FILE "', pathname, '"');
path := ExtractFilePath(pathname);
if length(path) > 0 then
begin
if not findFileCI(path, true) then raise Exception.Create('can''t create file "'+pathname+'"');
end;
oldname := pathname;
if findFileCI(oldname) then
begin
//writeln('*** found old file "', oldname, '"');
result := TFileStream.Create(oldname, fmOpenReadWrite or fmShareDenyWrite);
end
else
begin
result := TFileStream.Create(path+ExtractFileName(pathname), fmCreate);
end;
end;
procedure writeIntegerLE (st: TStream; vp: Pointer; size: Integer);
{$IFDEF ENDIAN_LITTLE}
begin
st.writeBuffer(vp^, size);
end;
{$ELSE}
var
p: PByte;
begin
p := PByte(vp)+size-1;
while size > 0 do
begin
st.writeBuffer(p^, 1);
Dec(size);
Dec(p);
end;
end;
{$ENDIF}
procedure writeIntegerBE (st: TStream; vp: Pointer; size: Integer);
{$IFDEF ENDIAN_LITTLE}
var
p: PByte;
begin
p := PByte(vp)+size-1;
while size > 0 do
begin
st.writeBuffer(p^, 1);
Dec(size);
Dec(p);
end;
end;
{$ELSE}
begin
st.writeBuffer(vp^, size);
end;
{$ENDIF}
procedure writeSign (st: TStream; const sign: AnsiString);
begin
if (Length(sign) > 0) then st.WriteBuffer(sign[1], Length(sign));
end;
function checkSign (st: TStream; const sign: AnsiString): Boolean;
var
buf: packed array[0..7] of AnsiChar;
f: Integer;
begin
result := false;
if (Length(sign) > 0) then
begin
if (Length(sign) <= 8) then
begin
st.ReadBuffer(buf[0], Length(sign));
for f := 1 to Length(sign) do if (buf[f-1] <> sign[f]) then exit;
end
else
begin
for f := 1 to Length(sign) do
begin
st.ReadBuffer(buf[0], 1);
if (buf[0] <> sign[f]) then exit;
end;
end;
end;
result := true;
end;
procedure writeInt (st: TStream; v: Byte); overload; begin writeIntegerLE(st, @v, 1); end;
procedure writeInt (st: TStream; v: ShortInt); overload; begin writeIntegerLE(st, @v, 1); end;
procedure writeInt (st: TStream; v: Word); overload; begin writeIntegerLE(st, @v, 2); end;
procedure writeInt (st: TStream; v: SmallInt); overload; begin writeIntegerLE(st, @v, 2); end;
procedure writeInt (st: TStream; v: LongWord); overload; begin writeIntegerLE(st, @v, 4); end;
procedure writeInt (st: TStream; v: LongInt); overload; begin writeIntegerLE(st, @v, 4); end;
procedure writeInt (st: TStream; v: Int64); overload; begin writeIntegerLE(st, @v, 8); end;
procedure writeInt (st: TStream; v: UInt64); overload; begin writeIntegerLE(st, @v, 8); end;
procedure writeIntBE (st: TStream; v: Byte); overload; begin writeIntegerBE(st, @v, 1); end;
procedure writeIntBE (st: TStream; v: ShortInt); overload; begin writeIntegerBE(st, @v, 1); end;
procedure writeIntBE (st: TStream; v: Word); overload; begin writeIntegerBE(st, @v, 2); end;
procedure writeIntBE (st: TStream; v: SmallInt); overload; begin writeIntegerBE(st, @v, 2); end;
procedure writeIntBE (st: TStream; v: LongWord); overload; begin writeIntegerBE(st, @v, 4); end;
procedure writeIntBE (st: TStream; v: LongInt); overload; begin writeIntegerBE(st, @v, 4); end;
procedure writeIntBE (st: TStream; v: Int64); overload; begin writeIntegerBE(st, @v, 8); end;
procedure writeIntBE (st: TStream; v: UInt64); overload; begin writeIntegerBE(st, @v, 8); end;
procedure writeBool (st: TStream; b: Boolean); begin writeInt(st, Byte(b)); end;
function readBool (st: TStream): Boolean; begin result := (readByte(st) <> 0); end;
procedure writeStr (st: TStream; const str: AnsiString; maxlen: LongWord=65535);
begin
if (Length(str) > maxlen) then raise XStreamError.Create('string too long');
if (maxlen <= 65535) then writeInt(st, Word(Length(str))) else writeInt(st, LongWord(Length(str)));
if (Length(str) > 0) then st.WriteBuffer(str[1], Length(str));
end;
function readStr (st: TStream; maxlen: LongWord=65535): AnsiString;
var
len: Integer;
begin
result := '';
if (maxlen <= 65535) then len := readWord(st) else len := Integer(readLongWord(st));
if (len < 0) or (len > maxlen) then raise XStreamError.Create('string too long');
if (len > 0) then
begin
SetLength(result, len);
st.ReadBuffer(result[1], len);
end;
end;
procedure readIntegerLE (st: TStream; vp: Pointer; size: Integer);
{$IFDEF ENDIAN_LITTLE}
begin
st.readBuffer(vp^, size);
end;
{$ELSE}
var
p: PByte;
begin
p := PByte(vp)+size-1;
while size > 0 do
begin
st.readBuffer(p^, 1);
Dec(size);
Dec(p);
end;
end;
{$ENDIF}
procedure readIntegerBE (st: TStream; vp: Pointer; size: Integer);
{$IFDEF ENDIAN_LITTLE}
var
p: PByte;
begin
p := PByte(vp)+size-1;
while size > 0 do
begin
st.readBuffer(p^, 1);
Dec(size);
Dec(p);
end;
end;
{$ELSE}
begin
st.readBuffer(vp^, size);
end;
{$ENDIF}
function readByte (st: TStream): Byte; begin readIntegerLE(st, @result, 1); end;
function readShortInt (st: TStream): ShortInt; begin readIntegerLE(st, @result, 1); end;
function readWord (st: TStream): Word; begin readIntegerLE(st, @result, 2); end;
function readSmallInt (st: TStream): SmallInt; begin readIntegerLE(st, @result, 2); end;
function readLongWord (st: TStream): LongWord; begin readIntegerLE(st, @result, 4); end;
function readLongInt (st: TStream): LongInt; begin readIntegerLE(st, @result, 4); end;
function readInt64 (st: TStream): Int64; begin readIntegerLE(st, @result, 8); end;
function readUInt64 (st: TStream): UInt64; begin readIntegerLE(st, @result, 8); end;
function readByteBE (st: TStream): Byte; begin readIntegerBE(st, @result, 1); end;
function readShortIntBE (st: TStream): ShortInt; begin readIntegerBE(st, @result, 1); end;
function readWordBE (st: TStream): Word; begin readIntegerBE(st, @result, 2); end;
function readSmallIntBE (st: TStream): SmallInt; begin readIntegerBE(st, @result, 2); end;
function readLongWordBE (st: TStream): LongWord; begin readIntegerBE(st, @result, 4); end;
function readLongIntBE (st: TStream): LongInt; begin readIntegerBE(st, @result, 4); end;
function readInt64BE (st: TStream): Int64; begin readIntegerBE(st, @result, 8); end;
function readUInt64BE (st: TStream): UInt64; begin readIntegerBE(st, @result, 8); end;
// ////////////////////////////////////////////////////////////////////////// //
function nmin (a, b: Byte): Byte; inline; overload; begin if (a < b) then result := a else result := b; end;
function nmin (a, b: ShortInt): ShortInt; inline; overload; begin if (a < b) then result := a else result := b; end;
function nmin (a, b: Word): Word; inline; overload; begin if (a < b) then result := a else result := b; end;
function nmin (a, b: SmallInt): SmallInt; inline; overload; begin if (a < b) then result := a else result := b; end;
function nmin (a, b: LongWord): LongWord; inline; overload; begin if (a < b) then result := a else result := b; end;
function nmin (a, b: LongInt): LongInt; inline; overload; begin if (a < b) then result := a else result := b; end;
function nmin (a, b: Int64): Int64; inline; overload; begin if (a < b) then result := a else result := b; end;
function nmin (a, b: UInt64): UInt64; inline; overload; begin if (a < b) then result := a else result := b; end;
function nmin (a, b: Single): Single; inline; overload; begin if (a < b) then result := a else result := b; end;
function nmin (a, b: Double): Double; inline; overload; begin if (a < b) then result := a else result := b; end;
{$IF DEFINED(CPU386) OR DEFINED(CPUAMD64)}
function nmin (a, b: Extended): Extended; inline; overload; begin if (a < b) then result := a else result := b; end;
{$ENDIF}
function nmax (a, b: Byte): Byte; inline; overload; begin if (a > b) then result := a else result := b; end;
function nmax (a, b: ShortInt): ShortInt; inline; overload; begin if (a > b) then result := a else result := b; end;
function nmax (a, b: Word): Word; inline; overload; begin if (a > b) then result := a else result := b; end;
function nmax (a, b: SmallInt): SmallInt; inline; overload; begin if (a > b) then result := a else result := b; end;
function nmax (a, b: LongWord): LongWord; inline; overload; begin if (a > b) then result := a else result := b; end;
function nmax (a, b: LongInt): LongInt; inline; overload; begin if (a > b) then result := a else result := b; end;
function nmax (a, b: Int64): Int64; inline; overload; begin if (a > b) then result := a else result := b; end;
function nmax (a, b: UInt64): UInt64; inline; overload; begin if (a > b) then result := a else result := b; end;
function nmax (a, b: Single): Single; inline; overload; begin if (a > b) then result := a else result := b; end;
function nmax (a, b: Double): Double; inline; overload; begin if (a > b) then result := a else result := b; end;
{$IF DEFINED(CPU386) OR DEFINED(CPUAMD64)}
function nmax (a, b: Extended): Extended; inline; overload; begin if (a > b) then result := a else result := b; end;
{$ENDIF}
function nclamp (v, a, b: Byte): Byte; inline; overload; begin if (v < a) then result := a else if (v > b) then result := b else result := v; end;
function nclamp (v, a, b: ShortInt): ShortInt; inline; overload; begin if (v < a) then result := a else if (v > b) then result := b else result := v; end;
function nclamp (v, a, b: Word): Word; inline; overload; begin if (v < a) then result := a else if (v > b) then result := b else result := v; end;
function nclamp (v, a, b: SmallInt): SmallInt; inline; overload; begin if (v < a) then result := a else if (v > b) then result := b else result := v; end;
function nclamp (v, a, b: LongWord): LongWord; inline; overload; begin if (v < a) then result := a else if (v > b) then result := b else result := v; end;
function nclamp (v, a, b: LongInt): LongInt; inline; overload; begin if (v < a) then result := a else if (v > b) then result := b else result := v; end;
function nclamp (v, a, b: Int64): Int64; inline; overload; begin if (v < a) then result := a else if (v > b) then result := b else result := v; end;
function nclamp (v, a, b: UInt64): UInt64; inline; overload; begin if (v < a) then result := a else if (v > b) then result := b else result := v; end;
function nclamp (v, a, b: Single): Single; inline; overload; begin if (v < a) then result := a else if (v > b) then result := b else result := v; end;
function nclamp (v, a, b: Double): Double; inline; overload; begin if (v < a) then result := a else if (v > b) then result := b else result := v; end;
{$IF DEFINED(CPU386) OR DEFINED(CPUAMD64)}
function nclamp (v, a, b: Extended): Extended; inline; overload; begin if (v < a) then result := a else if (v > b) then result := b else result := v; end;
{$ENDIF}
// ////////////////////////////////////////////////////////////////////////// //
{$IFDEF WINDOWS}
function snprintf (buf: PAnsiChar; bufsize: SizeUInt; const fmt: PAnsiChar): SizeUInt; cdecl; varargs; external 'msvcrt.dll' name '_snprintf';
{$ELSE}
function snprintf (buf: PAnsiChar; bufsize: SizeUInt; const fmt: PAnsiChar): SizeUInt; cdecl; varargs; external 'libc' name 'snprintf';
{$ENDIF}
(*
procedure conwriter (constref buf; len: SizeUInt);
var
ss: ShortString;
slen: Integer;
b: PByte;
begin
if (len < 1) then exit;
b := PByte(@buf);
while (len > 0) do
begin
if (len > 255) then slen := 255 else slen := Integer(len);
Move(b^, ss[1], len);
ss[0] := AnsiChar(slen);
write(ss);
b += slen;
len -= slen;
end;
end;
*)
function formatstrf (const fmt: AnsiString; const args: array of const; writerCB: TFormatStrFCallback=nil): AnsiString;
const
PadSpaces: AnsiString = ' ';
PadZeroes: AnsiString = '00000000000000000000000000000000000000000000000000000000000000000000000';
var
curarg: Integer = 0; // current arg in `args`
sign, fmtch: AnsiChar;
zeropad: Boolean;
width, prec: Integer; // width and precision
spos, epos: Integer;
ch: AnsiChar;
strbuf: array[0..256] of AnsiChar;
strblen: SizeUInt;
fmtbuf: array[0..256] of AnsiChar;
fmtblen: Integer;
pclen: Integer;
pc: PAnsiChar;
ccname: ShortString;
procedure writer (constref buf; len: SizeUInt);
var
ss: ShortString;
slen: Integer;
b: PByte;
begin
if (len < 1) then exit;
b := PByte(@buf);
if assigned(writerCB) then
begin
writerCB(b^, len);
end
else
begin
while (len > 0) do
begin
if (len > 255) then slen := 255 else slen := Integer(len);
Move(b^, ss[1], slen);
ss[0] := AnsiChar(slen);
result += ss;
b += slen;
len -= slen;
end;
end;
end;
procedure xwrite (const s: AnsiString);
begin
if (Length(s) > 0) then writer(PAnsiChar(s)^, Length(s));
end;
procedure putFmtChar (ch: AnsiChar);
begin
fmtbuf[fmtblen] := ch;
Inc(fmtblen);
end;
procedure putFmtInt (n: Integer);
var
len: SizeUInt;
begin
len := snprintf(@fmtbuf[fmtblen], Length(fmtbuf)-fmtblen, '%d', n);
if (len > 0) then Inc(fmtblen, len);
end;
procedure buildCFormat (const pfx: AnsiString='');
var
f: Integer;
begin
fmtblen := 0;
for f := 1 to Length(pfx) do putFmtChar(pfx[f]);
putFmtChar('%');
if (sign <> ' ') then putFmtChar(sign);
if (width >= 0) then
begin
if (zeropad) then putFmtChar('0');
putFmtInt(width);
if (prec >= 0) then
begin
putFmtChar('.');
putFmtInt(prec);
end;
end;
putFmtChar(fmtch);
fmtbuf[fmtblen] := #0;
end;
procedure writeStrBuf ();
begin
if (strblen > 0) then writer(strbuf, strblen);
end;
function i642str (n: Int64; hex: Boolean; hexup: Boolean): PAnsiChar;
var
neg: Boolean;
xpos: Integer;
begin
if (n = $8000000000000000) then
begin
if hex then snprintf(@strbuf[0], Length(strbuf), '-8000000000000000')
else snprintf(@strbuf[0], Length(strbuf), '-9223372036854775808');
result := @strbuf[0];
end
else
begin
neg := (n < 0);
if neg then n := -n;
xpos := High(strbuf);
strbuf[xpos] := #0; Dec(xpos);
repeat
if not hex then
begin
strbuf[xpos] := AnsiChar((n mod 10)+48);
Dec(xpos);
n := n div 10;
end
else
begin
if (n mod 16 > 9) then
begin
strbuf[xpos] := AnsiChar((n mod 16)+48+7);
if not hexup then Inc(strbuf[xpos], 32);
end
else strbuf[xpos] := AnsiChar((n mod 16)+48);
Dec(xpos);
n := n div 16;
end;
until (n = 0);
if neg then begin strbuf[xpos] := '-'; Dec(xpos); end;
result := @strbuf[xpos+1];
end;
end;
function ui642str (n: UInt64; hex: Boolean; hexup: Boolean): PAnsiChar;
var
xpos: Integer;
begin
xpos := High(strbuf);
strbuf[xpos] := #0; Dec(xpos);
repeat
if not hex then
begin
strbuf[xpos] := AnsiChar((n mod 10)+48);
Dec(xpos);
n := n div 10;
end
else
begin
if (n mod 16 > 9) then
begin
strbuf[xpos] := AnsiChar((n mod 16)+48+7);
if not hexup then Inc(strbuf[xpos], 32);
end
else strbuf[xpos] := AnsiChar((n mod 16)+48);
Dec(xpos);
n := n div 16;
end;
until (n = 0);
result := @strbuf[xpos+1];
end;
procedure indent (len: Integer);
var
ilen: Integer;
begin
while (len > 0) do
begin
if (len > Length(PadSpaces)) then ilen := Length(PadSpaces) else ilen := len;
writer(PAnsiChar(PadSpaces)^, ilen);
Dec(len, ilen);
end;
end;
procedure indent0 (len: Integer);
var
ilen: Integer;
begin
while (len > 0) do
begin
if (len > Length(PadZeroes)) then ilen := Length(PadZeroes) else ilen := len;
writer(PAnsiChar(PadZeroes)^, ilen);
Dec(len, ilen);
end;
end;
begin
result := '';
spos := 1;
while (spos <= Length(fmt)) do
begin
// print literal part
epos := spos;
while (epos <= Length(fmt)) and (fmt[epos] <> '%') do Inc(epos);
// output literal part
if (epos > spos) then
begin
if (epos > Length(fmt)) then
begin
writer((PAnsiChar(fmt)+spos-1)^, epos-spos);
break;
end;
if (epos+1 > Length(fmt)) then Inc(epos) // last percent, output literally
else if (fmt[epos+1] = '%') then // special case
begin
Inc(epos);
writer((PAnsiChar(fmt)+spos-1)^, epos-spos);
spos := epos+1;
end
else
begin
writer((PAnsiChar(fmt)+spos-1)^, epos-spos);
spos := epos;
end;
continue;
end;
// check if we have argument for this format string
if (curarg > High(args)) then
begin
xwrite('');
writer((PAnsiChar(fmt)+spos-1)^, Length(fmt)-spos+1);
break;
end;
// skip percent
if (spos+1 > Length(fmt)) then break; // oops
assert(fmt[spos] = '%');
Inc(spos);
// parse format; check for sign
if (fmt[spos] = '-') then begin sign := '-'; Inc(spos); end
else if (fmt[spos] = '+') then begin sign := '+'; Inc(spos); end
else sign := ' ';
// parse width
if (spos > Length(fmt)) then begin xwrite(''); break; end;
if (sign <> ' ') or ((fmt[spos] >= '0') and (fmt[spos] <= '9')) then
begin
if (fmt[spos] < '0') or (fmt[spos] > '9') then begin xwrite(''); writer((PAnsiChar(fmt)+spos-1)^, Length(fmt)-spos+1); break; end;
zeropad := (fmt[spos] = '0');
width := 0;
while (spos <= Length(fmt)) do
begin
ch := fmt[spos];
if (ch < '0') or (ch > '9') then break;
width := width*10+Integer(ch)-48;
Inc(spos);
end;
end
else
begin
width := -1;
zeropad := false;
end;
// parse precision
prec := -1;
if (spos <= Length(fmt)) and (fmt[spos] = '.') then
begin
Inc(spos);
if (spos > Length(fmt)) then begin xwrite(''); break; end;
if (fmt[spos] < '0') or (fmt[spos] > '9') then begin xwrite(''); writer((PAnsiChar(fmt)+spos-1)^, Length(fmt)-spos+1); break; end;
prec := 0;
while (spos <= Length(fmt)) do
begin
ch := fmt[spos];
if (ch < '0') or (ch > '9') then break;
prec := prec*10+Integer(ch)-48;
Inc(spos);
end;
end;
// get format char
if (spos > Length(fmt)) then begin xwrite(''); break; end;
fmtch := fmt[spos];
Inc(spos);
// done parsing format, check for valid format chars
if not (fmtch in ['s','u','d','x','X','p','f','g','c']) then begin xwrite(''); writer((PAnsiChar(fmt)+spos-1)^, Length(fmt)-spos+1); break; end;
// now write formatted string
case args[curarg].VType of
vtInteger: // args[curarg].VInteger
begin
if not (fmtch in ['s','u','d','x','X']) then begin xwrite(''); writer((PAnsiChar(fmt)+spos-1)^, Length(fmt)-spos+1); break; end;
if (fmtch = 's') then fmtch := 'd';
buildCFormat();
strblen := snprintf(@strbuf[0], Length(strbuf), @fmtbuf[0], args[curarg].VInteger);
writeStrBuf();
end;
vtBoolean: // args[curarg].VBoolean
case fmtch of
's':
begin
buildCFormat();
if args[curarg].VBoolean then strblen := snprintf(@strbuf[0], Length(strbuf), @fmtbuf[0], 'true')
else strblen := snprintf(@strbuf[0], Length(strbuf), @fmtbuf[0], 'false');
writeStrBuf();
end;
'c':
begin
buildCFormat();
if args[curarg].VBoolean then strblen := snprintf(@strbuf[0], Length(strbuf), @fmtbuf[0], AnsiChar('t'))
else strblen := snprintf(@strbuf[0], Length(strbuf), @fmtbuf[0], AnsiChar('f'));
writeStrBuf();
end;
'u', 'd', 'x', 'X':
begin
buildCFormat();
strblen := snprintf(@strbuf[0], Length(strbuf), @fmtbuf[0], Integer(args[curarg].VBoolean));
writeStrBuf();
end;
else
begin
xwrite('');
writer((PAnsiChar(fmt)+spos-1)^, Length(fmt)-spos+1);
break;
end;
end;
vtChar: // args[curarg].VChar
case fmtch of
's', 'c':
begin
fmtch := 'c';
buildCFormat();
strblen := snprintf(@strbuf[0], Length(strbuf), @fmtbuf[0], args[curarg].VChar);
writeStrBuf();
end;
'u', 'd', 'x', 'X':
begin
buildCFormat();
strblen := snprintf(@strbuf[0], Length(strbuf), @fmtbuf[0], Integer(args[curarg].VChar));
writeStrBuf();
end;
else
begin
xwrite('');
writer((PAnsiChar(fmt)+spos-1)^, Length(fmt)-spos+1);
break;
end;
end;
//vtWideChar: begin end; // args[curarg].VWideChar (WideChar)
vtExtended: // args[curarg].VExtended^
case fmtch of
's', 'g':
begin
fmtch := 'g';
buildCFormat();
strblen := snprintf(@strbuf[0], Length(strbuf), @fmtbuf[0], Double(args[curarg].VExtended^));
writeStrBuf();
end;
'f':
begin
buildCFormat();
strblen := snprintf(@strbuf[0], Length(strbuf), @fmtbuf[0], Double(args[curarg].VExtended^));
writeStrBuf();
end;
'd':
begin
buildCFormat();
strblen := snprintf(@strbuf[0], Length(strbuf), @fmtbuf[0], Integer(trunc(args[curarg].VExtended^)));
writeStrBuf();
end;
'u', 'x', 'X':
begin
buildCFormat();
strblen := snprintf(@strbuf[0], Length(strbuf), @fmtbuf[0], LongWord(trunc(args[curarg].VExtended^)));
writeStrBuf();
end;
else
begin
xwrite('');
writer((PAnsiChar(fmt)+spos-1)^, Length(fmt)-spos+1);
break;
end;
end;
vtString: // args[curarg].VString^ (PShortString)
begin
if (sign <> '-') then indent(width-Length(args[curarg].VString^));
writer(args[curarg].VString^[1], Length(args[curarg].VString^));
if (sign = '-') then indent(width-Length(args[curarg].VString^));
end;
vtPointer: // args[curarg].VPointer
case fmtch of
's':
begin
fmtch := 'x';
if (width < 8) then width := 8;
zeropad := true;
buildCFormat('0x');
strblen := snprintf(@strbuf[0], Length(strbuf), @fmtbuf[0], PtrUInt(args[curarg].VPointer));
writeStrBuf();
end;
'u', 'd', 'x', 'p', 'X':
begin
if (fmtch = 'p') then fmtch := 'x';
if (width < 8) then width := 8;
zeropad := true;
buildCFormat('0x');
strblen := snprintf(@strbuf[0], Length(strbuf), @fmtbuf[0], PtrUInt(args[curarg].VPointer));
writeStrBuf();
end;
else
begin
xwrite('');
writer((PAnsiChar(fmt)+spos-1)^, Length(fmt)-spos+1);
break;
end;
end;
vtPChar: // args[curarg].VPChar
if (args[curarg].VPChar = nil) then
begin
if (sign <> '-') then indent(width-3);
xwrite('nil');
if (sign = '-') then indent(width-3);
end
else
begin
pclen := 0;
while (args[curarg].VPChar[pclen] <> #0) do Inc(pclen);
if (sign <> '-') then indent(width-pclen);
writer(args[curarg].VPChar^, pclen);
if (sign = '-') then indent(width-pclen);
end;
vtObject: // args[curarg].VObject.Classname (TObject)
begin
if (args[curarg].VObject <> nil) then ccname := args[curarg].VObject.Classname else ccname := '';
if (sign <> '-') then indent(width-Length(ccname));
xwrite(ccname);
if (sign = '-') then indent(width-Length(ccname));
end;
vtClass: // args[curarg].VClass.Classname (TClass)
begin
if (args[curarg].VClass <> nil) then ccname := args[curarg].VClass.Classname else ccname := '';
if (sign <> '-') then indent(width-Length(ccname));
xwrite(ccname);
if (sign = '-') then indent(width-Length(ccname));
end;
//vtPWideChar: begin end; // args[curarg].VPWideChar (PWideChar)
vtAnsiString: // AnsiString(args[curarg].VAnsiString) (Pointer)
begin
if (sign <> '-') then indent(width-Length(AnsiString(args[curarg].VAnsiString)));
xwrite(AnsiString(args[curarg].VAnsiString));
if (sign = '-') then indent(width-Length(AnsiString(args[curarg].VAnsiString)));
end;
//vtCurrency: begin end; // args[curarg].VCurrency (PCurrency)
//vtVariant: begin end; // args[curarg].VVariant^ (PVariant)
//vtInterface: begin end; // args[curarg].VInterface (Pointer);
//vtWideString: begin end; // args[curarg].VWideString (Pointer);
vtInt64: // args[curarg].VInt64^ (PInt64)
begin
case fmtch of
's','d','u': pc := i642str(args[curarg].VInt64^, false, false);
'x': pc := i642str(args[curarg].VInt64^, true, false);
'X': pc := i642str(args[curarg].VInt64^, true, true);
else begin xwrite(''); writer((PAnsiChar(fmt)+spos-1)^, Length(fmt)-spos+1); break; end;
end;
pclen := 0;
while (pc[pclen] <> #0) do Inc(pclen);
if (sign <> '-') and (width > pclen) then
begin
if zeropad then
begin
if (pc[0] = '-') or (pc[0] = '+') then
begin
writer(pc^, 1);
indent0(width-pclen-1);
Inc(pc);
Dec(pclen);
end
else
begin
indent0(width-pclen);
end;
end
else
begin
indent(width-pclen);
end;
end;
writer(pc^, pclen);
if (sign = '-') then indent(width-pclen);
end;
vtQWord: // args[curarg].VQWord^ (PQWord)
begin
case fmtch of
's','d','u': pc := ui642str(args[curarg].VInt64^, false, false);
'x': pc := ui642str(args[curarg].VInt64^, true, false);
'X': pc := ui642str(args[curarg].VInt64^, true, true);
else begin xwrite(''); writer((PAnsiChar(fmt)+spos-1)^, Length(fmt)-spos+1); break; end;
end;
pclen := 0;
while (pc[pclen] <> #0) do Inc(pclen);
if (sign <> '-') then begin if zeropad then indent0(width-pclen) else indent(width-pclen); end;
writer(pc^, pclen);
if (sign = '-') then indent(width-pclen);
end;
else
begin
xwrite('');
writer((PAnsiChar(fmt)+spos-1)^, Length(fmt)-spos+1);
break;
end;
end;
Inc(curarg);
end;
end;
function GetDiskFileInfo (fname: AnsiString; var info: TDiskFileInfo): Boolean;
var
age: LongInt;
size: LongInt;
handle: THandle;
begin
result := false;
if (length(fname) = 0) then exit;
if not findFileCI(fname) then exit;
// get age
age := FileAge(fname);
if (age = -1) then exit;
// get size
handle := FileOpen(fname, fmOpenRead or fmShareDenyNone);
if (handle = THandle(-1)) then exit;
size := FileSeek(handle, 0, fsFromEnd);
FileClose(handle);
if (size = -1) then exit;
// fill info
info.diskName := fname;
info.size := size;
info.age := age;
result := true;
end;
(*
var
ss: ShortString;
ls: AnsiString;
i64: Int64 = -$A000000000;
ui64: UInt64 = $A000000000;
begin
writef(conwriter, 'test int:<%s> bool:<%s:%02d:%c> bool:<%s:%02d:%c>; char:<%2s;%c;%d>!'#10, [42, true, true, true, false, false, false, 'A', 'A', 'A']);
writef(conwriter, 'test float:<%s;%u;%f;%g>'#10, [666.6942, 666.6942, 666.6942, 666.6942]);
ss := 'fuckit';
ls := 'FUCKIT';
writef(conwriter, 'test ss:<%5s;%040s>'#10, [ss, ss]);
writef(conwriter, 'test ls:<%5s;%040s>'#10, [ls, ls]);
writef(conwriter, 'test pointer:<%s;%x;%p>'#10, [@ss, @ss, @ss]);
writef(conwriter, 'test i64:<%s;%x;%015d;%u;%X>'#10, [i64, i64, i64, i64, i64]);
writef(conwriter, 'test ui64:<%s;%x;%15d;%015u;%X>'#10, [ui64, ui64, ui64, ui64, ui64]);
*)
end.