* moved to fcl, since it needs classes

rtl/objpas/gettext.pp

@@ -1,259 +0,0 @@
-{
-    $Id$
-    This file is part of the Free Pascal run time library.
-    Copyright (c) 1998 by the Free Pascal development team
-
-    Gettext interface to resourcestrings.
-    
-    See the file COPYING.FPC, included in this distribution,
-    for details about the copyright.
-
-    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.
-
- **********************************************************************}
-
-{$MODE objfpc}
-{$H+}
-
-unit gettext;
-
-interface
-
-uses sysutils, classes;
-
-const
-  MOFileHeaderMagic = $950412de;
-
-type
-
-  TMOFileHeader = packed record
-    magic: LongWord;             // MOFileHeaderMagic
-    revision: LongWord;          // 0
-    nstrings: LongWord;          // Number of string pairs
-    OrigTabOffset: LongWord;     // Offset of original string offset table
-    TransTabOffset: LongWord;    // Offset of translated string offset table
-    HashTabSize: LongWord;       // Size of hashing table
-    HashTabOffset: LongWord;     // Offset of first hashing table entry
-  end;
-
-  TMOStringInfo = packed record
-    length: LongWord;
-    offset: LongWord;
-  end;
-
-  TMOStringTable = array[LongWord] of TMOStringInfo;
-  PMOStringTable = ^TMOStringTable;
-
-
-  TLongWordArray = array[LongWord] of LongWord;
-  PLongWordArray = ^TLongWordArray;
-
-  TPCharArray = array[LongWord] of PChar;
-  PPCharArray = ^TPCharArray;
-
-  TMOFile = class
-  protected
-    HashTableSize: LongWord;
-    HashTable: PLongWordArray;
-    OrigTable, TranslTable: PMOStringTable;
-    OrigStrings, TranslStrings: PPCharArray;
-  public
-    constructor Create(AFilename: String);
-    constructor Create(AStream: TStream);
-    function Translate(AOrig: PChar; ALen: Integer; AHash: LongWord): String;
-    function Translate(AOrig: String; AHash: LongWord): String;
-    function Translate(AOrig: String): String;
-  end;
-
-  EMOFileError = class(Exception)
-  end;
-
-
-  function CalcHash(s: String): LongWord;
-
-  procedure TranslateResourceStrings(AFile: TMOFile);
-  procedure TranslateResourceStrings(AFilename: String);
-
-implementation
-
-uses dos;
-
-
-function CalcHash(s: String): LongWord;
-var
-  g, i : LongWord;
-begin
-  Result := 0;
-  for i := 1 to Length(s) do begin
-    Result := Result shl 4 + Ord(s[i]);
-    g := Result and ($f shl 28);
-    if g <> 0 then
-      Result := (Result xor (g shr 24)) xor g;
-  end;
-  if Result = 0 then Result := not 0;
-end;
-
-
-constructor TMOFile.Create(AStream: TStream);
-var
-  header: TMOFileHeader;
-  i: Integer;
-  s: String;
-begin
-  inherited Create;
-
-  AStream.Read(header, Sizeof(header));
-
-  if header.magic <> MOFileHeaderMagic then
-    raise EMOFileError.Create('Invalid magic - not a MO file?');
-
-{  WriteLn('Revision: ', header.revision);
-  WriteLn('# of strings: ', header.nstrings);
-  WriteLn('OrigTabOffset: ', header.OrigTabOffset);
-  WriteLn('TransTabOffset: ', header.TransTabOffset);
-  WriteLn('# of hashcodes: ', header.HashTabSize);
-  WriteLn('HashTabOffset: ', header.HashTabOffset);
-}
-  GetMem(OrigTable, header.nstrings * SizeOf(TMOStringInfo));
-  GetMem(TranslTable, header.nstrings * SizeOf(TMOStringInfo));
-  GetMem(OrigStrings, header.nstrings * SizeOf(PChar));
-  GetMem(TranslStrings, header.nstrings * SizeOf(PChar));
-
-
-  AStream.Position := header.OrigTabOffset;
-  AStream.Read(OrigTable^, header.nstrings * SizeOf(TMOStringInfo));
-
-  AStream.Position := header.TransTabOffset;
-  AStream.Read(TranslTable^, header.nstrings * SizeOf(TMOStringInfo));
-
-
-  // Read strings
-  for i := 0 to header.nstrings - 1 do begin
-    AStream.Position := OrigTable^[i].offset;
-    SetLength(s, OrigTable^[i].length);
-    AStream.Read(s[1], OrigTable^[i].length);
-    OrigStrings^[i] := StrNew(PChar(s));
-  end;
-
-  for i := 0 to header.nstrings - 1 do begin
-    AStream.Position := TranslTable^[i].offset;
-    SetLength(s, TranslTable^[i].length);
-    AStream.Read(s[1], TranslTable^[i].length);
-    TranslStrings^[i] := StrNew(PChar(s));
-  end;
-
-  // Read hashing table
-  HashTableSize := header.HashTabSize;
-  GetMem(HashTable, 4 * HashTableSize);
-  AStream.Position := header.HashTabOffset;
-  AStream.Read(HashTable^, 4 * HashTableSize);
-end;
-
-constructor TMOFile.Create(AFilename: String);
-var
-  f: TStream;
-begin
-  f := TFileStream.Create(AFilename, fmOpenRead);
-  try
-    Self.Create(f);
-  finally
-    f.Free;
-  end;
-end;
-
-
-function TMOFile.Translate(AOrig: PChar; ALen: Integer; AHash: LongWord): String;
-var
-  idx, incr, nstr: LongWord;
-begin
-  idx := AHash mod HashTableSize;
-  incr := 1 + (AHash mod (HashTableSize - 2));
-  while True do begin
-    nstr := HashTable^[idx];
-    if nstr = 0 then begin
-      Result := '';
-      exit;
-    end;
-    if (OrigTable^[nstr - 1].length = ALen) and
-       (StrComp(OrigStrings^[nstr - 1], AOrig) = 0) then begin
-      Result := TranslStrings^[nstr - 1];
-      exit;
-    end;
-    if idx >= HashTableSize - incr then
-      Dec(idx, HashTableSize - incr)
-    else
-      Inc(idx, incr);
-  end;
-end;
-
-function TMOFile.Translate(AOrig: String; AHash: LongWord): String;
-begin
-  Result := Translate(PChar(AOrig), Length(AOrig), AHash);
-end;
-
-function TMOFile.Translate(AOrig: String): String;
-begin
-  Result := Translate(AOrig, CalcHash(AOrig));
-end;
-
-
-// -------------------------------------------------------
-//   Resourcestring translation procedures
-// -------------------------------------------------------
-
-type
-  TResourceStringRecord = Packed Record
-    DefaultValue, CurrentValue: AnsiString;
-    HashValue: longint;
-  end;
-
-  TResourceStringTable = Packed Record
-    Count : longint;
-    Resrec : Array[Word] of TResourceStringRecord;
-  end;
-
-Var
-  ResourceStringTable: TResourceStringTable; External Name 'RESOURCESTRINGLIST';
-
-
-procedure TranslateResourceStrings(AFile: TMOFile);
-var
-  rst: ^TResourceStringTable;
-  i: Integer;
-  s: String;
-begin
-  rst := @ResourceStringTable;
-  for i := 0 to rst^.Count - 1 do begin
-    // WriteLn(i, ': ', rst^.resrec[i].DefaultValue, ' / ', rst^.resrec[i].CurrentValue, ' / ', rst^.resrec[i].HashValue);
-    s := AFile.Translate(rst^.resrec[i].DefaultValue);
-    if s <> '' then
-      rst^.resrec[i].CurrentValue := s;
-  end;
-end;
-
-procedure TranslateResourceStrings(AFilename: String);
-var
-  mo: TMOFile;
-  lang: String;
-begin
-  lang := Copy(GetEnv('LANG'), 1, 2);
-  try
-    mo := TMOFile.Create(Format(AFilename, [lang]));
-    TranslateResourceStrings(mo);
-    mo.Free;
-  except
-    on e: Exception do;
-  end;
-end;
-
-end.
-
-
-{
-  $Log$
-  Revision 1.1  1999-07-25 16:23:31  michael
-  + Initial implementation from Sebastian Guenther
-
-}