diff --git a/src/shared/utils.pas b/src/shared/utils.pas
index 36d59ff8bd1d5c22606d8b62e4b0727c0e389cba..c182da196a11ed57a1e61716031f8b033ad76424 100644 (file)
--- a/src/shared/utils.pas
+++ b/src/shared/utils.pas
SysUtils, Classes;
+// ////////////////////////////////////////////////////////////////////////// //
+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;
+
+
+// ////////////////////////////////////////////////////////////////////////// //
// does filename have one of ".wad", ".pk3", ".zip" extensions?
function hasWadExtension (fn: AnsiString): Boolean;
// returns formatted string if `writerCB` is `nil`, empty string otherwise
function formatstrf (const fmt: AnsiString; args: array of const; writerCB: TFormatStrFCallback=nil): AnsiString;
+function wchar2win (wc: WideChar): AnsiChar; inline;
+function utf2win (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;
+
implementation
+var
+ wc2shitmap: array[0..65535] of AnsiChar;
+ wc2shitmapInited: Boolean = false;
+
+
+// ////////////////////////////////////////////////////////////////////////// //
+procedure initShitMap ();
+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,$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
+ );
+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 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 hasWadExtension (fn: AnsiString): Boolean;
begin
fn := ExtractFileExt(fn);