X-Git-Url: https://deadsoftware.ru/gitweb?a=blobdiff_plain;f=src%2Fshared%2Futils.pas;h=10f7f930faa92089fd260571492dc767caf9f40c;hb=6e52b3dc2eb459c745e571dfef5afb5c2ccd546f;hp=253e838961316e5bd5e2b19595ba10d7760e033a;hpb=c3be56f2a3849cd22be39ce594498c7990e05606;p=d2df-editor.git

diff --git a/src/shared/utils.pas b/src/shared/utils.pas
index 253e838..10f7f93 100644
--- a/src/shared/utils.pas
+++ b/src/shared/utils.pas
@@ -2,8 +2,7 @@
  *
  * 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, either version 3 of the License, or
- * (at your option) any later version.
+ * 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
@@ -13,7 +12,7 @@
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *)
-{$MODE DELPHI}
+{$INCLUDE a_modes.inc}
 unit utils;
 
 interface
@@ -22,6 +21,36 @@ 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;
 
@@ -34,8 +63,10 @@ function addWadExtension (fn: AnsiString): AnsiString;
 // convert number to strig with nice commas
 function Int64ToStrComma (i: Int64): AnsiString;
 
-function UpCase1251 (ch: Char): Char;
-function LoCase1251 (ch: Char): Char;
+function UpCase1251 (ch: AnsiChar): AnsiChar; inline;
+function LoCase1251 (ch: AnsiChar): AnsiChar; inline;
+
+function toLowerCase1251 (const s: AnsiString): AnsiString;
 
 // `true` if strings are equal; ignoring case for cp1251
 function StrEquCI1251 (const s0, s1: AnsiString): Boolean;
@@ -48,6 +79,7 @@ function utf8to1251 (s: AnsiString): AnsiString;
 // `lastIsDir` should be `true` if we are searching for directory
 // nobody cares about shitdoze, so i'll use the same code path for it
 function findFileCI (var pathname: AnsiString; lastIsDir: Boolean=false): Boolean;
+function findFileCIStr (pathname: AnsiString): AnsiString;
 
 // they throws
 function openDiskFileRO (pathname: AnsiString): TStream;
@@ -92,9 +124,283 @@ function readInt64BE (st: TStream): Int64;
 function readUInt64BE (st: TStream): UInt64;
 
 
+type
+  TFormatStrFCallback = procedure (constref buf; len: SizeUInt);
+
+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;
+
+
+// ////////////////////////////////////////////////////////////////////////// //
+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,$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
+  );
+
 implementation
 
+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 := Char(code and $ff);
+    end
+    else if (code <= $7FF) then
+    begin
+      result := Char($C0 or (code shr 6));
+      result += Char($80 or (code and $3F));
+    end
+    else if (code <= $FFFF) then
+    begin
+      result := Char($E0 or (code shr 12));
+      result += Char($80 or ((code shr 6) and $3F));
+      result += Char($80 or (code and $3F));
+    end
+    else if (code <= $10FFFF) then
+    begin
+      result := Char($F0 or (code shr 18));
+      result += Char($80 or ((code shr 12) and $3F));
+      result += Char($80 or ((code shr 6) and $3F));
+      result += Char($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 hasWadExtension (fn: AnsiString): Boolean;
 begin
   fn := ExtractFileExt(fn);
@@ -146,7 +452,7 @@ begin
 end;
 
 
-function UpCase1251 (ch: Char): Char;
+function UpCase1251 (ch: AnsiChar): AnsiChar; inline;
 begin
   if ch < #128 then
   begin
@@ -170,7 +476,7 @@ begin
 end;
 
 
-function LoCase1251 (ch: Char): Char;
+function LoCase1251 (ch: AnsiChar): AnsiChar; inline;
 begin
   if ch < #128 then
   begin
@@ -205,6 +511,26 @@ begin
 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
@@ -390,6 +716,11 @@ begin
   if result then pathname := newname;
 end;
 
+function findFileCIStr (pathname: AnsiString): AnsiString;
+begin
+  result := pathname;
+  findFileCI(result);
+end;
 
 function openDiskFileRO (pathname: AnsiString): TStream;
 begin
@@ -523,5 +854,5 @@ function readLongIntBE (st: TStream): LongInt; begin readIntegerBE(st, @result,
 function readInt64BE (st: TStream): Int64; begin readIntegerBE(st, @result, 8); end;
 function readUInt64BE (st: TStream): UInt64; begin readIntegerBE(st, @result, 8); end;
 
-
 end.
+