- IsNumericChar/... and other character class type functions moved to UUnicodeUtils.pas

- UCS4 to UTF8 converters added. Nice for changing single characters (e.g. MyString[i] := 'de')
- Player names are now UTF8
- DeleteLastLetter is UTF8 now

git-svn-id: svn://svn.code.sf.net/p/ultrastardx/svn/branches/experimental@1504 b956fd51-792f-4845-bead-9b4dfca2ff2c

1 files changed, 124 insertions, 0 deletions

diff --git a/unicode/src/base/UUnicodeUtils.pas b/unicode/src/base/UUnicodeUtils.pas
new file mode 100644
index 00000000..91c5966f
--- /dev/null
+++ b/unicode/src/base/UUnicodeUtils.pas
@@ -0,0 +1,124 @@
+{* 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.
+ *
+ * $URL$
+ * $Id$
+ *}
+
+unit UUnicodeUtils;
+
+interface
+
+{$IFDEF FPC}
+  {$MODE Delphi}
+{$ENDIF}
+
+{$I switches.inc}
+
+uses
+  SysUtils,
+  Windows;
+
+(*
+ * Character classes
+ *)
+
+function IsAlphaChar(ch: WideChar): boolean;
+function IsNumericChar(ch: WideChar): boolean;
+function IsAlphaNumericChar(ch: WideChar): boolean;
+function IsPunctuationChar(ch: WideChar): boolean;
+function IsControlChar(ch: WideChar): boolean;
+
+function UTF8ToUCS4String(const str: UTF8String): UCS4String;
+function UCS4ToUTF8String(const str: UCS4String): UTF8String;
+
+implementation
+
+function IsAlphaChar(ch: WideChar): boolean;
+begin
+  {$IFDEF MSWINDOWS}
+    Result := IsCharAlphaW(ch);
+  {$ELSE}
+    // TODO: add chars > 255
+    case ch of
+      'A'..'Z',  // A-Z
+      'a'..'z',  // a-z
+      #170,#181,#186,
+      #192..#214,
+      #216..#246,
+      #248..#255:
+        Result := true;
+      else
+        Result := false;
+    end;
+  {$ENDIF}
+end;
+
+function IsNumericChar(ch: WideChar): boolean;
+begin
+  // ignore non-arabic numerals as we do not want to handle them
+  case ch of
+    '0'..'9':
+      Result := true;
+    else
+      Result := false;
+  end;
+end;
+
+function IsAlphaNumericChar(ch: WideChar): boolean;
+begin
+  Result := (IsAlphaChar(ch) or IsNumericChar(ch));
+end;
+
+function IsPunctuationChar(ch: WideChar): boolean;
+begin
+  // TODO: add chars > 255?
+  case ch of
+    ' '..'/',':'..'@','['..'`','{'..'~',
+    #160..#191,#215,#247:
+      Result := true;
+    else
+      Result := false;
+  end;
+end;
+
+function IsControlChar(ch: WideChar): boolean;
+begin
+  case ch of
+    #0..#31,
+    #127..#159:
+      Result := true;
+    else
+      Result := false;
+  end;
+end;
+
+function UTF8ToUCS4String(const str: UTF8String): UCS4String;
+begin
+  Result := WideStringToUCS4String(UTF8Decode(str));
+end;
+
+function UCS4ToUTF8String(const str: UCS4String): UTF8String;
+begin
+  Result := UTF8Encode(UCS4StringToWideString(str));
+end;
+
+end.