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authortobigun <tobigun@b956fd51-792f-4845-bead-9b4dfca2ff2c>2010-10-19 16:39:31 +0000
committertobigun <tobigun@b956fd51-792f-4845-bead-9b4dfca2ff2c>2010-10-19 16:39:31 +0000
commit0b60f71cb853b35e53d0b407493dbcfc098ed40e (patch)
tree03221c792a89f8c885288a73d1041ea5dc7aee4f /mediaplugin/src/encoding
parenta52499fa9f5e7f37c70bfb7a4145554168ec30f0 (diff)
downloadusdx-0b60f71cb853b35e53d0b407493dbcfc098ed40e.tar.gz
usdx-0b60f71cb853b35e53d0b407493dbcfc098ed40e.tar.xz
usdx-0b60f71cb853b35e53d0b407493dbcfc098ed40e.zip
initial commit
git-svn-id: svn://svn.code.sf.net/p/ultrastardx/svn/branches/experimental@2684 b956fd51-792f-4845-bead-9b4dfca2ff2c
Diffstat (limited to 'mediaplugin/src/encoding')
-rw-r--r--mediaplugin/src/encoding/Auto.inc137
-rw-r--r--mediaplugin/src/encoding/CP1250.inc236
-rw-r--r--mediaplugin/src/encoding/CP1252.inc122
-rw-r--r--mediaplugin/src/encoding/Locale.inc55
-rw-r--r--mediaplugin/src/encoding/UTF8.inc70
5 files changed, 620 insertions, 0 deletions
diff --git a/mediaplugin/src/encoding/Auto.inc b/mediaplugin/src/encoding/Auto.inc
new file mode 100644
index 00000000..f404c2f6
--- /dev/null
+++ b/mediaplugin/src/encoding/Auto.inc
@@ -0,0 +1,137 @@
+{* UltraStar Deluxe - Karaoke Game
+ *
+ * UltraStar Deluxe is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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 2
+ * of the License, or (at your option) any later version.
+ *
+ * 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; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ *}
+
+// Auto
+// try to match the w3c regex and decode as unicode on match and as fallback if not match
+// (copied from http://www.w3.org/International/questions/qa-forms-utf-8.en.php)
+//
+// m/\A(
+// [\x09\x0A\x0D\x20-\x7E] # ASCII
+// | [\xC2-\xDF][\x80-\xBF] # non-overlong 2-byte
+// | \xE0[\xA0-\xBF][\x80-\xBF] # excluding overlongs
+// | [\xE1-\xEC\xEE\xEF][\x80-\xBF]{2} # straight 3-byte
+// | \xED[\x80-\x9F][\x80-\xBF] # excluding surrogates
+// | \xF0[\x90-\xBF][\x80-\xBF]{2} # planes 1-3
+// | [\xF1-\xF3][\x80-\xBF]{3} # planes 4-15
+// | \xF4[\x80-\x8F][\x80-\xBF]{2} # plane 16
+// )*\z/x
+
+type
+ TEncoderAuto = class(TEncoder)
+ public
+ function GetName(): AnsiString; override;
+ function Encode(const InStr: UCS4String; out OutStr: AnsiString): boolean; override;
+ function Decode(const InStr: AnsiString; out OutStr: UCS4String): boolean; override;
+
+ constructor Create(const UTF8Encoder, FallbackEncoder: IEncoder);
+
+ private
+ FallbackEncoder: IEncoder;
+ UTF8Encoder: IEncoder;
+ Regex: PPCRE;
+ RegexExtra: PPCREExtra;
+ end;
+
+function PCREGetMem(Size: SizeInt): Pointer; cdecl;
+begin
+ GetMem(Result, Size);
+end;
+
+procedure PCREFreeMem(P: Pointer); cdecl;
+begin
+ FreeMem(P);
+end;
+
+// NOTICE: Log.LogError/ConsoleWriteLn/DebugWriteLn are initialized yet
+procedure ShowError(const msg: string);
+begin
+ {$IFDEF CONSOLE}
+ WriteLn('ERROR: ', msg);
+ {$ENDIF}
+end;
+
+constructor TEncoderAuto.Create(const UTF8Encoder, FallbackEncoder: IEncoder);
+var
+ Error: PChar;
+ ErrorOffset: Integer;
+begin
+ inherited Create();
+ self.FallbackEncoder := FallbackEncoder;
+ self.UTF8Encoder := UTF8Encoder;
+
+ // Load and initialize PCRE Library
+ if LoadPCRE() then
+ begin
+ // compile regex
+ self.Regex := pcre_compile('\A([\x09\x0A\x0D\x20-\x7E]|[\xC2-\xDF][\x80-\xBF]|\xE0[\xA0-\xBF][\x80-\xBF]|[\xE1-\xEC\xEE\xEF][\x80-\xBF]{2}|\xED[\x80-\x9F][\x80-\xBF]|\xF0[\x90-\xBF][\x80-\xBF]{2}|[\xF1-\xF3][\x80-\xBF]{3}|\xF4[\x80-\x8F][\x80-\xBF]{2})*\z', 0, @Error, @ErrorOffset, nil);
+
+ if self.Regex = Nil then
+ begin
+ ShowError(Format('UTF8 Regex compilation failed: %s at %d', [Error, ErrorOffset]));
+ end
+ else
+ begin
+ // if compiled successfull, try to get more informations the speed up the matching
+ self.RegexExtra := pcre_study(self.Regex, 0, @Error);
+
+ if Error <> Nil then
+ begin
+ ShowError('UTF8 Regex study failed: ' + Error);
+ end;
+ end;
+ end
+ else
+ begin
+ ShowError('pcre not loaded. utf-8 autodetection will not work.');
+ end;
+end;
+
+function TEncoderAuto.GetName(): AnsiString;
+begin
+ Result := 'Auto';
+end;
+
+function TEncoderAuto.Decode(const InStr: AnsiString; out OutStr: UCS4String): boolean;
+var
+ RegexResults: Integer;
+begin
+ if (self.Regex <> Nil) then
+ begin
+ RegexResults := pcre_exec(Regex, RegexExtra, PChar(InStr), Length(InStr), 0, 0, Nil, 0);
+
+ if RegexResults >= 0 then
+ begin
+ Result := UTF8Encoder.Decode(InStr, OutStr);
+ Exit;
+ end;
+ end;
+
+ Result := FallbackEncoder.Decode(InStr, OutStr);
+end;
+
+function TEncoderAuto.Encode(const InStr: UCS4String; out OutStr: AnsiString): boolean;
+begin
+ Result := UTF8Encoder.Encode(InStr, OutStr);
+end;
diff --git a/mediaplugin/src/encoding/CP1250.inc b/mediaplugin/src/encoding/CP1250.inc
new file mode 100644
index 00000000..5628156e
--- /dev/null
+++ b/mediaplugin/src/encoding/CP1250.inc
@@ -0,0 +1,236 @@
+{* UltraStar Deluxe - Karaoke Game
+ *
+ * UltraStar Deluxe is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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 2
+ * of the License, or (at your option) any later version.
+ *
+ * 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; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ *}
+
+{*
+ * Windows-1250 Central/Eastern Europe
+ * (used by Ultrastar)
+ *}
+
+type
+ TEncoderCP1250 = class(TSingleByteEncoder)
+ public
+ function GetName(): AnsiString; override;
+ function DecodeChar(InChr: AnsiChar; out OutChr: UCS4Char): boolean; override;
+ function EncodeChar(InChr: UCS4Char; out OutChr: AnsiChar): boolean; override;
+ end;
+
+function TEncoderCP1250.GetName(): AnsiString;
+begin
+ Result := 'CP1250';
+end;
+
+const
+ // Positions marked as #0 are invalid.
+ CP1250Table: array[128..255] of UCS4Char = (
+ { $80 }
+ $20AC, 0, $201A, 0, $201E, $2026, $2020, $2021,
+ 0, $2030, $0160, $2039, $015A, $0164, $017D, $0179,
+ { $90 }
+ 0, $2018, $2019, $201C, $201D, $2022, $2013, $2014,
+ 0, $2122, $0161, $203A, $015B, $0165, $017E, $017A,
+ { $A0 }
+ $00A0, $02C7, $02D8, $0141, $00A4, $0104, $00A6, $00A7,
+ $00A8, $00A9, $015E, $00AB, $00AC, $00AD, $00AE, $017B,
+ { $B0 }
+ $00B0, $00B1, $02DB, $0142, $00B4, $00B5, $00B6, $00B7,
+ $00B8, $0105, $015F, $00BB, $013D, $02DD, $013E, $017C,
+ { $C0 }
+ $0154, $00C1, $00C2, $0102, $00C4, $0139, $0106, $00C7,
+ $010C, $00C9, $0118, $00CB, $011A, $00CD, $00CE, $010E,
+ { $D0 }
+ $0110, $0143, $0147, $00D3, $00D4, $0150, $00D6, $00D7,
+ $0158, $016E, $00DA, $0170, $00DC, $00DD, $0162, $00DF,
+ { $E0 }
+ $0155, $00E1, $00E2, $0103, $00E4, $013A, $0107, $00E7,
+ $010D, $00E9, $0119, $00EB, $011B, $00ED, $00EE, $010F,
+ { $F0 }
+ $0111, $0144, $0148, $00F3, $00F4, $0151, $00F6, $00F7,
+ $0159, $016F, $00FA, $0171, $00FC, $00FD, $0163, $02D9
+ );
+
+function TEncoderCP1250.DecodeChar(InChr: AnsiChar; out OutChr: UCS4Char): boolean;
+begin
+ Result := true;
+ if (InChr < #128) then
+ OutChr := UCS4Char(Ord(InChr)) // use Ord() to avoid automatic conversion
+ else
+ begin
+ OutChr := CP1250Table[Ord(InChr)];
+ if (OutChr = 0) then
+ begin
+ Result := false;
+ OutChr := Ord(ERROR_CHAR);
+ end;
+ end;
+end;
+
+function TEncoderCP1250.EncodeChar(InChr: UCS4Char; out OutChr: AnsiChar): boolean;
+begin
+ if (InChr < 128) then
+ begin
+ OutChr := AnsiChar(Ord(InChr));
+ Result := true;
+ end
+ else
+ begin
+ case InChr of
+ $20AC: OutChr := #128;
+ // invalid: #129
+ $201A: OutChr := #130;
+ // invalid: #131
+ $201E: OutChr := #132;
+ $2026: OutChr := #133;
+ $2020: OutChr := #134;
+ $2021: OutChr := #135;
+ // invalid: #136
+ $2030: OutChr := #137;
+ $0160: OutChr := #138;
+ $2039: OutChr := #139;
+ $015A: OutChr := #140;
+ $0164: OutChr := #141;
+ $017D: OutChr := #142;
+ $0179: OutChr := #143;
+ // invalid: #144
+ $2018: OutChr := #145;
+ $2019: OutChr := #146;
+ $201C: OutChr := #147;
+ $201D: OutChr := #148;
+ $2022: OutChr := #149;
+ $2013: OutChr := #150;
+ $2014: OutChr := #151;
+ // invalid: #152
+ $2122: OutChr := #153;
+ $0161: OutChr := #154;
+ $203A: OutChr := #155;
+ $015B: OutChr := #156;
+ $0165: OutChr := #157;
+ $017E: OutChr := #158;
+ $017A: OutChr := #159;
+ $00A0: OutChr := #160;
+ $02C7: OutChr := #161;
+ $02D8: OutChr := #162;
+ $0141: OutChr := #163;
+ $00A4: OutChr := #164;
+ $0104: OutChr := #165;
+ $00A6: OutChr := #166;
+ $00A7: OutChr := #167;
+ $00A8: OutChr := #168;
+ $00A9: OutChr := #169;
+ $015E: OutChr := #170;
+ $00AB: OutChr := #171;
+ $00AC: OutChr := #172;
+ $00AD: OutChr := #173;
+ $00AE: OutChr := #174;
+ $017B: OutChr := #175;
+ $00B0: OutChr := #176;
+ $00B1: OutChr := #177;
+ $02DB: OutChr := #178;
+ $0142: OutChr := #179;
+ $00B4: OutChr := #180;
+ $00B5: OutChr := #181;
+ $00B6: OutChr := #182;
+ $00B7: OutChr := #183;
+ $00B8: OutChr := #184;
+ $0105: OutChr := #185;
+ $015F: OutChr := #186;
+ $00BB: OutChr := #187;
+ $013D: OutChr := #188;
+ $02DD: OutChr := #189;
+ $013E: OutChr := #190;
+ $017C: OutChr := #191;
+ $0154: OutChr := #192;
+ $00C1: OutChr := #193;
+ $00C2: OutChr := #194;
+ $0102: OutChr := #195;
+ $00C4: OutChr := #196;
+ $0139: OutChr := #197;
+ $0106: OutChr := #198;
+ $00C7: OutChr := #199;
+ $010C: OutChr := #200;
+ $00C9: OutChr := #201;
+ $0118: OutChr := #202;
+ $00CB: OutChr := #203;
+ $011A: OutChr := #204;
+ $00CD: OutChr := #205;
+ $00CE: OutChr := #206;
+ $010E: OutChr := #207;
+ $0110: OutChr := #208;
+ $0143: OutChr := #209;
+ $0147: OutChr := #210;
+ $00D3: OutChr := #211;
+ $00D4: OutChr := #212;
+ $0150: OutChr := #213;
+ $00D6: OutChr := #214;
+ $00D7: OutChr := #215;
+ $0158: OutChr := #216;
+ $016E: OutChr := #217;
+ $00DA: OutChr := #218;
+ $0170: OutChr := #219;
+ $00DC: OutChr := #220;
+ $00DD: OutChr := #221;
+ $0162: OutChr := #222;
+ $00DF: OutChr := #223;
+ $0155: OutChr := #224;
+ $00E1: OutChr := #225;
+ $00E2: OutChr := #226;
+ $0103: OutChr := #227;
+ $00E4: OutChr := #228;
+ $013A: OutChr := #229;
+ $0107: OutChr := #230;
+ $00E7: OutChr := #231;
+ $010D: OutChr := #232;
+ $00E9: OutChr := #233;
+ $0119: OutChr := #234;
+ $00EB: OutChr := #235;
+ $011B: OutChr := #236;
+ $00ED: OutChr := #237;
+ $00EE: OutChr := #238;
+ $010F: OutChr := #239;
+ $0111: OutChr := #240;
+ $0144: OutChr := #241;
+ $0148: OutChr := #242;
+ $00F3: OutChr := #243;
+ $00F4: OutChr := #244;
+ $0151: OutChr := #245;
+ $00F6: OutChr := #246;
+ $00F7: OutChr := #247;
+ $0159: OutChr := #248;
+ $016F: OutChr := #249;
+ $00FA: OutChr := #250;
+ $0171: OutChr := #251;
+ $00FC: OutChr := #252;
+ $00FD: OutChr := #253;
+ $0163: OutChr := #254;
+ $02D9: OutChr := #255;
+ else begin
+ OutChr := ERROR_CHAR;
+ Result := false;
+ Exit;
+ end;
+ end;
+ Result := true;
+ end;
+end;
+
diff --git a/mediaplugin/src/encoding/CP1252.inc b/mediaplugin/src/encoding/CP1252.inc
new file mode 100644
index 00000000..f7d3f8ea
--- /dev/null
+++ b/mediaplugin/src/encoding/CP1252.inc
@@ -0,0 +1,122 @@
+{* UltraStar Deluxe - Karaoke Game
+ *
+ * UltraStar Deluxe is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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 2
+ * of the License, or (at your option) any later version.
+ *
+ * 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; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ *}
+
+{*
+ * Windows-1252 Western Europe
+ * (used by UltraStar Deluxe < 1.1)
+ *}
+
+type
+ TEncoderCP1252 = class(TSingleByteEncoder)
+ public
+ function GetName(): AnsiString; override;
+ function DecodeChar(InChr: AnsiChar; out OutChr: UCS4Char): boolean; override;
+ function EncodeChar(InChr: UCS4Char; out OutChr: AnsiChar): boolean; override;
+ end;
+
+function TEncoderCP1252.GetName(): AnsiString;
+begin
+ Result := 'CP1252';
+end;
+
+const
+ // Positions marked as #0 are invalid.
+ CP1252Table: array[128..159] of UCS4Char = (
+ { $80 }
+ $20AC, 0, $201A, $0192, $201E, $2026, $2020, $2021,
+ $02C6, $2030, $0160, $2039, $0152, 0, $017D, 0,
+ { $90 }
+ 0, $2018, $2019, $201C, $201D, $2022, $2013, $2014,
+ $02DC, $2122, $0161, $203A, $0153, 0, $017E, $0178
+ );
+
+function TEncoderCP1252.DecodeChar(InChr: AnsiChar; out OutChr: UCS4Char): boolean;
+begin
+ Result := true;
+ if (InChr < #128) or (InChr >= #160) then
+ OutChr := UCS4Char(Ord(InChr)) // use Ord() to avoid automatic conversion
+ else
+ begin
+ OutChr := CP1252Table[Ord(InChr)];
+ if (OutChr = 0) then
+ begin
+ Result := false;
+ OutChr := Ord(ERROR_CHAR);
+ end;
+ end;
+end;
+
+function TEncoderCP1252.EncodeChar(InChr: UCS4Char; out OutChr: AnsiChar): boolean;
+begin
+ if (InChr < 128) or ((InChr >= 160) and (InChr <= 255)) then
+ begin
+ OutChr := AnsiChar(Ord(InChr));
+ Result := true;
+ end
+ else
+ begin
+ case InChr of
+ $20AC: OutChr := #128;
+ // invalid: #129
+ $201A: OutChr := #130;
+ $0192: OutChr := #131;
+ $201E: OutChr := #132;
+ $2026: OutChr := #133;
+ $2020: OutChr := #134;
+ $2021: OutChr := #135;
+ $02C6: OutChr := #136;
+ $2030: OutChr := #137;
+ $0160: OutChr := #138;
+ $2039: OutChr := #139;
+ $0152: OutChr := #140;
+ // invalid: #141
+ $017D: OutChr := #142;
+ // invalid: #143
+ // invalid: #144
+ $2018: OutChr := #145;
+ $2019: OutChr := #146;
+ $201C: OutChr := #147;
+ $201D: OutChr := #148;
+ $2022: OutChr := #149;
+ $2013: OutChr := #150;
+ $2014: OutChr := #151;
+ $02DC: OutChr := #152;
+ $2122: OutChr := #153;
+ $0161: OutChr := #154;
+ $203A: OutChr := #155;
+ $0153: OutChr := #156;
+ // invalid: #157
+ $017E: OutChr := #158;
+ $0178: OutChr := #159;
+ else begin
+ OutChr := ERROR_CHAR;
+ Result := false;
+ Exit;
+ end;
+ end;
+ Result := true;
+ end;
+end;
+
diff --git a/mediaplugin/src/encoding/Locale.inc b/mediaplugin/src/encoding/Locale.inc
new file mode 100644
index 00000000..a3cdcebc
--- /dev/null
+++ b/mediaplugin/src/encoding/Locale.inc
@@ -0,0 +1,55 @@
+{* UltraStar Deluxe - Karaoke Game
+ *
+ * UltraStar Deluxe is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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 2
+ * of the License, or (at your option) any later version.
+ *
+ * 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; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ *}
+
+{*
+ * Locale
+ *}
+
+type
+ TEncoderLocale = class(TEncoder)
+ public
+ function GetName(): AnsiString; override;
+ function Encode(const InStr: UCS4String; out OutStr: AnsiString): boolean; override;
+ function Decode(const InStr: AnsiString; out OutStr: UCS4String): boolean; override;
+ end;
+
+function TEncoderLocale.GetName(): AnsiString;
+begin
+ Result := 'LOCALE';
+end;
+
+function TEncoderLocale.Decode(const InStr: AnsiString; out OutStr: UCS4String): boolean;
+begin
+ OutStr := WideStringToUCS4String(InStr); // use implicit conversion
+ Result := true;
+end;
+
+function TEncoderLocale.Encode(const InStr: UCS4String; out OutStr: AnsiString): boolean;
+begin
+ OutStr := UCS4StringToWideString(InStr); // use implicit conversion
+ // any way to check for errors?
+ Result := true;
+end;
+
diff --git a/mediaplugin/src/encoding/UTF8.inc b/mediaplugin/src/encoding/UTF8.inc
new file mode 100644
index 00000000..43eacfbd
--- /dev/null
+++ b/mediaplugin/src/encoding/UTF8.inc
@@ -0,0 +1,70 @@
+{* UltraStar Deluxe - Karaoke Game
+ *
+ * UltraStar Deluxe is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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 2
+ * of the License, or (at your option) any later version.
+ *
+ * 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; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ *}
+
+{*
+ * UTF-8
+ *}
+
+type
+ TEncoderUTF8 = class(TEncoder)
+ public
+ function GetName(): AnsiString; override;
+ function Encode(const InStr: UCS4String; out OutStr: AnsiString): boolean; override;
+ function Decode(const InStr: AnsiString; out OutStr: UCS4String): boolean; override;
+ end;
+
+function TEncoderUTF8.GetName(): AnsiString;
+begin
+ Result := 'UTF8';
+end;
+
+function TEncoderUTF8.Decode(const InStr: AnsiString; out OutStr: UCS4String): boolean;
+var
+ I: integer;
+ StrPtr: PAnsiChar;
+begin
+ // UTF8Decode() may crash with FPC < 2.2.2 if the input string is not UTF-8
+ // encoded. Newer versions do not crash but do not signal errors either.
+ // So let's implement this stuff again.
+ Result := true;
+ SetLength(OutStr, Length(InStr)+1);
+ I := 0;
+ StrPtr := PChar(InStr);
+ while (StrPtr^ <> #0) do
+ begin
+ if (not NextCharUTF8(StrPtr, OutStr[I])) then
+ Result := false;;
+ Inc(I);
+ end;
+ SetLength(OutStr, I+1);
+ OutStr[High(OutStr)] := 0;
+end;
+
+function TEncoderUTF8.Encode(const InStr: UCS4String; out OutStr: AnsiString): boolean;
+begin
+ OutStr := UCS4ToUTF8String(InStr);
+ Result := true;
+end;
+