From 702b2acc2df232119ee6274711134f1d2be19c76 Mon Sep 17 00:00:00 2001
From: Ketmar Dark <ketmar@ketmar.no-ip.org>
Date: Sun, 27 Aug 2017 11:24:13 +0300
Subject: [PATCH] moved some utility functions from xparser to utils

---
 src/shared/utils.pas   | 239 +++++++++++++++++++++++++++++++++++++++++
 src/shared/xdynrec.pas |  12 +--
 src/shared/xparser.pas | 201 ----------------------------------
 3 files changed, 245 insertions(+), 207 deletions(-)

diff --git a/src/shared/utils.pas b/src/shared/utils.pas
index 36d59ff..c182da1 100644
--- a/src/shared/utils.pas
+++ b/src/shared/utils.pas
@@ -22,6 +22,36 @@ uses
   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;
 
@@ -98,10 +128,219 @@ type
 // 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);
diff --git a/src/shared/xdynrec.pas b/src/shared/xdynrec.pas
index f06df08..2aec726 100644
--- a/src/shared/xdynrec.pas
+++ b/src/shared/xdynrec.pas
@@ -504,7 +504,7 @@ end;
 
 function TDynField.definition (): AnsiString;
 begin
-  result := mPasName+' is '+TTextParser.quote(mName)+' type ';
+  result := mPasName+' is '+quoteStr(mName)+' type ';
   result += getTypeName(mType);
   if (mMaxDim >= 0) then result += Format('[%d]', [mMaxDim]);
   if (mRecOfs >= 0) then result += Format(' offset %d', [mRecOfs]);
@@ -679,7 +679,7 @@ begin
   else if (fldtype = 'trigdata') then mType := TType.TTrigData
   else raise Exception.Create(Format('field ''%s'' has invalid type ''%s''', [fldname, fldtype]));
 
-       if hasdefStr then self.mDefUnparsed := TTextParser.quote(defstr)
+       if hasdefStr then self.mDefUnparsed := quoteStr(defstr)
   else if hasdefInt then self.mDefUnparsed := Format('%d', [defint])
   else if hasdefId then self.mDefUnparsed := defstr;
 
@@ -795,7 +795,7 @@ begin
         else
         begin
           if (Length(mSVal) > mMaxDim) then raise Exception.Create(Format('invalid string size definition for field ''%s''', [mName]));
-          s := utfTo1251(mSVal);
+          s := utf2win(mSVal);
           if (Length(s) > 0) then st.WriteBuffer(PChar(s)^, Length(s));
           for f := Length(s) to mMaxDim do writeInt(st, Byte(0));
         end;
@@ -951,7 +951,7 @@ begin
     TType.TChar:
       begin
         if (mMaxDim = 0) then raise Exception.Create(Format('invalid string size definition for field ''%s''', [mName]));
-        wr.put(TTextParser.quote(mSVal));
+        wr.put(quoteStr(mSVal));
         wr.put(';'#10);
         exit;
       end;
@@ -967,7 +967,7 @@ begin
       end;
     TType.TString:
       begin
-        wr.put(TTextParser.quote(mSVal));
+        wr.put(quoteStr(mSVal));
         wr.put(';'#10);
         exit;
       end;
@@ -1480,7 +1480,7 @@ begin
   else
   begin
     // record
-    result := mPasName+' is '+TTextParser.quote(mName);
+    result := mPasName+' is '+quoteStr(mName);
     if (mSize >= 0) then result += Format(' size %d bytes', [mSize]);
     if mHeader then result += ' header';
   end;
diff --git a/src/shared/xparser.pas b/src/shared/xparser.pas
index a7b8a51..fe17d0c 100644
--- a/src/shared/xparser.pas
+++ b/src/shared/xparser.pas
@@ -22,35 +22,6 @@ uses
   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;
-
-
 // ////////////////////////////////////////////////////////////////////////// //
 type
   TTextParser = class
@@ -85,9 +56,6 @@ type
     procedure warmup (); virtual; // called in constructor to warm up the system
     procedure loadNextChar (); virtual; abstract; // loads next char into mNextChar; #0 means 'eof'
 
-  public
-    class function quote (const s: AnsiString): AnsiString;
-
   public
     constructor Create (loadToken: Boolean=true);
     destructor Destroy (); override;
@@ -196,13 +164,6 @@ type
   end;
 
 
-// ////////////////////////////////////////////////////////////////////////// //
-function wcharTo1251 (wc: WideChar): AnsiChar; inline;
-function utfTo1251 (const s: AnsiString): AnsiString;
-
-function digitInBase (ch: AnsiChar; base: Integer): Integer;
-
-
 implementation
 
 uses
@@ -246,168 +207,6 @@ begin
 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 utfTo1251 (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 += wcharTo1251(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;
-
-
-// ////////////////////////////////////////////////////////////////////////// //
-class function TTextParser.quote (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;
-
-
 // ////////////////////////////////////////////////////////////////////////// //
 constructor TTextParser.Create (loadToken: Boolean=true);
 begin
-- 
2.29.2