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ZMOprDll.pas
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unit ZMOprDLL;
// ZMDLLOpr.pas - DLL operations and functions
(* ***************************************************************************
TZipMaster VCL originally by Chris Vleghert, Eric W. Engler.
Present Maintainers and Authors Roger Aelbrecht and Russell Peters.
Copyright (C) 1997-2002 Chris Vleghert and Eric W. Engler
Copyright (C) 1992-2008 Eric W. Engler
Copyright (C) 2009, 2010, 2011, 2012, 2013 Russell Peters and Roger Aelbrecht
Copyright (C) 2014, 2015, 2016, 2017 Russell Peters and Roger Aelbrecht
All rights reserved.
For the purposes of Copyright and this license "DelphiZip" is the current
authors, maintainers and developers of its code:
Russell Peters and Roger Aelbrecht.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* DelphiZip reserves the names "DelphiZip", "ZipMaster", "ZipBuilder",
"DelZip" and derivatives of those names for the use in or about this
code and neither those names nor the names of its authors or
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL DELPHIZIP, IT'S AUTHORS OR CONTRIBUTERS BE
LIABLE FOR ANYDIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT(INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
contact: problems AT delphizip DOT org
updates: http://www.delphizip.org
*************************************************************************** *)
// modified 2013-12-05
interface
{$INCLUDE '.\ZipVers.inc'}
uses
{$IFDEF VERDXE2up}
System.Classes, WinApi.Windows,
{$ELSE}
Classes, Windows,
{$ENDIF}
ZMHandler;
// {$DEFINE ZDEBUG}
type
TZMDLL = class(TZMOperationRoot)
public
procedure AbortDLL;
end;
type
TZMOpAddStreamToFile = class(TZMDLL)
private
FFileAttr: Dword;
FFileDate: Dword;
FFileName: string;
public
constructor Create(const FileName: string; FileDate, FileAttr: Dword);
function Changes: TZMOperRes; override;
function Execute(TheBody: TZMHandler): Integer; override;
function Name: string; override;
function Needs: TZMOperRes; override;
end;
type
TZMOpAdd = class(TZMDLL)
public
constructor Create;
function Changes: TZMOperRes; override;
function Execute(TheBody: TZMHandler): Integer; override;
function Name: string; override;
function Needs: TZMOperRes; override;
end;
implementation
uses
{$IFDEF VERDXE2up}
System.SysUtils, VCL.Controls, VCL.Graphics, VCL.Dialogs,
{$ELSE}
SysUtils, Controls, Graphics, Dialogs,
{$IFNDEF VERD7up}ZMCompat, {$ENDIF}
{$ENDIF}
Forms, ZipMstr, ZMDelZip, ZMBody, ZMBaseOpr, ZMXcpt, ZMFileOpr, ZMLister,
ZMMsg, ZMUtils, ZMDrv, ZMStructs, ZMUTF8, ZMZipReader, ZMDLLLoad, ZMWinFuncs,
ZMZipBase, ZMZipWriter, ZMCore, ZMCommand;
const
__UNIT__ = 28;
type
TZMDLLOpr = class;
TDZCallback = class
private
FHoldSize: Integer;
PCB: PZCallBackStruct;
function GetActionCode: Integer;
function GetArg1: Cardinal;
function GetArg2: Cardinal;
function GetArg3: Integer;
function GetFile_Size: Int64;
function GetIsZip: Boolean;
function GetMsg: string;
function GetMsg2: string;
function GetOwner: TZMDLLOpr;
function GetWritten: Int64;
procedure SetArg1(const Value: Cardinal);
procedure SetArg2(const Value: Cardinal);
procedure SetArg3(const Value: Integer);
procedure SetFile_Size(const Value: Int64);
procedure SetMsg(const Value: string);
protected
FHeldData: PByte;
function Assign(ZCallBackRec: PZCallBackStruct): Integer;
function CopyData(Dst: PByte; MaxSize: Integer): Boolean;
function GetMsgStr(const Msg: PByte): string;
function HoldData(const Src: PByte; Size: Cardinal): PByte;
function HoldString(const Src: string): PByte;
procedure SetComment(const AStr: AnsiString);
procedure SetData(Src: PByte; Size: Integer);
public
procedure AfterConstruction; override;
procedure BeforeDestruction; override;
procedure Clear;
property ActionCode: Integer read GetActionCode;
property Arg1: Cardinal read GetArg1 write SetArg1;
property Arg2: Cardinal read GetArg2 write SetArg2;
property Arg3: Integer read GetArg3 write SetArg3;
property File_Size: Int64 read GetFile_Size write SetFile_Size;
property IsZip: Boolean read GetIsZip;
property Msg: string read GetMsg write SetMsg;
property Msg2: string read GetMsg2;
property Owner: TZMDLLOpr read GetOwner;
property Written: Int64 read GetWritten;
end;
TZMDLLOpr = class(TZMFileOpr)
private
FAutoAttr: Cardinal;
FAutoDate: Cardinal;
FCB: TDZCallback;
FDLLOperKey: Cardinal;
FDLLTargetName: string;
FEventErr: string;
// 1 data for dll held until next callback or fini
FHeldData: Pointer;
FIsDestructing: Boolean;
Warnings: Integer;
function DLLStreamClose(ZStreamRec: PZStreamRec): Integer;
function DLLStreamCreate(ZStreamRec: PZStreamRec): Integer;
function DLLStreamIdentify(ZStreamRec: PZStreamRec): Integer;
function DLLToErrCode(DLL_error: Integer): Integer;
procedure DLL_Comment(var Result: Integer);
procedure DLL_Data(var Result: Integer);
procedure DLL_ExtName(var Result: Integer);
procedure DLL_Message(var Result: Integer);
procedure DLL_Password(var Result: Integer);
procedure DLL_Progress(Action: TActionCodes; var Result: Integer);
procedure DLL_SetAddName(var Result: Integer);
procedure DLL_Skipped(var Result: Integer);
function GetAddCompLevel: Integer;
function GetAddFrom: TDateTime;
function GetAddOptions: TZMAddOpts;
function GetAddStoreSuffixes: TZMAddStoreExts;
function GetDLL_Load: Boolean;
function GetExtAddStoreSuffixes: string;
function GetPassword: string;
function GetPasswordReqCount: Integer;
function GetRootDir: string;
function GetZipStream: TMemoryStream;
function IsDestWritable(const Fname: string; AllowEmpty: Boolean): Boolean;
function JoinMVArchive(var TmpZipName: string): Integer;
function RecreateMVArchive(const TmpZipName: string; Recreate: Boolean):
Boolean;
procedure SetAddOptions(const Value: TZMAddOpts);
procedure SetCB(const Value: TDZCallback);
procedure SetDLL_Load(const Value: Boolean);
procedure SetPasswordReqCount(const Value: Integer);
procedure SetRootDir(const Value: string);
protected
FAutoStream: TStream;
function Add: Integer;
function AddStoreExtStr(Options: TZMAddStoreExts): string;
function AddStreamToFile(const FileName: string;
FileDate, FileAttr: Dword): Integer;
function AllocDLLCommand(const FileName: string): PDLLCommands;
procedure CancelSet(Value: Integer);
procedure DestroyDLLCmd(var Rec: PDLLCommands);
function DLLCallback(ZCallBackRec: PZCallBackStruct): Integer;
function DLLStreamOp(Op: TZStreamActions; ZStreamRec: PZStreamRec): Integer;
procedure DLL_Arg(var Result: Integer);
procedure ExtAdd;
function SetupZipCmd(const Value: string): PDLLCommands;
property AddCompLevel: Integer read GetAddCompLevel;
property AddFrom: TDateTime read GetAddFrom;
property AddStoreSuffixes: TZMAddStoreExts read GetAddStoreSuffixes;
property CB: TDZCallback read FCB write SetCB;
property DLLTargetName: string read FDLLTargetName write FDLLTargetName;
property ExtAddStoreSuffixes: string read GetExtAddStoreSuffixes;
property Password: string read GetPassword;
property PasswordReqCount: Integer read GetPasswordReqCount
write SetPasswordReqCount;
property RootDir: string read GetRootDir write SetRootDir;
public
procedure AbortDLL;
procedure AfterConstruction; override;
procedure BeforeDestruction; override;
property AddOptions: TZMAddOpts read GetAddOptions write SetAddOptions;
property DLL_Load: Boolean read GetDLL_Load write SetDLL_Load;
property ZipStream: TMemoryStream read GetZipStream;
end;
function ZM_Error(Line, Error: Integer): Integer;
begin
Result := -((__UNIT__ shl ZERR_UNIT_SHIFTS) + (Line shl ZERR_LINE_SHIFTS) or
AbsErr(Error));
end;
(* ? ZCallback
1.76 01 May 2004 RP change return type and value to return flag for exception
1.76 24 April 2004 RP use DLLCallback
1.73 ( 1 June 2003) changed for new callback
{ Dennis Passmore (Compuserve: 71640,2464) contributed the idea of passing an
instance handle to the DLL, and, in turn, getting it back from the callback.
This lets us referance variables in the TZMDLLOpr class from within the
callback function. Way to go Dennis!
Modified by Russell Peters }
*)
function ZCallback(ZCallBackRec: PZCallBackStruct): Longint; stdcall;
begin
Result := CALLBACK_ERROR;
if ZCallBackRec^.Check = ZCallBack_Check then
begin
with TObject(ZCallBackRec^.Caller) as TZMDLLOpr do
Result := DLLCallback(ZCallBackRec);
end;
end;
function ZStreamCallback(ZStreamRec: PZStreamRec): Longint; stdcall;
var
Cnt: Integer;
Op: TZStreamActions;
Strm: TStream;
begin
Result := CALLBACK_ERROR;
try
if ZStreamRec^.Check = ZStream_Check then
begin
with ZStreamRec^ do
begin
Op := TZStreamActions(OpCode);
Result := 0;
case Op of
ZsaIdentify .. ZsaClose:
with TObject(ZStreamRec^.Caller) as TZMDLLOpr do
Result := DLLStreamOp(Op, ZStreamRec);
ZsaPosition: // reposition
begin
{$IFNDEF VERD6up}
if Integer(ArgLL) <> ArgLL then
begin
Strm := TObject(StrmP) as TStream;
ArgLL := Strm.Seek(ArgLL, Word(TSeekOrigin(ArgI)));
if ArgLL >= 0 then
Result := CALLBACK_TRUE;
end;
{$ELSE}
Strm := TObject(StrmP) as TStream;
ArgLL := Strm.Seek(ArgLL, TSeekOrigin(ArgI));
if ArgLL >= 0 then
Result := CALLBACK_TRUE;
{$ENDIF}
end;
ZsaRead: // read
begin
Strm := TObject(StrmP) as TStream;
Cnt := ArgI;
if (Strm.Position + Cnt) > Strm.Size then
Cnt := Integer(Strm.Size - Strm.Position);
ArgI := Strm.Read(BufP^, Cnt);
if ArgI = Cnt then
Result := CALLBACK_TRUE;
end;
ZsaWrite: // Write
begin
Strm := TObject(StrmP) as TStream;
Cnt := ArgI;
ArgI := Strm.Write(BufP^, Cnt);
if ArgI = Cnt then
Result := CALLBACK_TRUE;
end;
end;
end;
end;
except
on E: Exception do
begin
// clear any exceptions
Result := CALLBACK_ERROR;
end;
end;
end;
procedure TZMDLLOpr.AbortDLL;
begin
if FDLLOperKey <> 0 then
_DLL_Abort(Master, FDLLOperKey);
end;
function TZMDLLOpr.Add: Integer;
begin
if Body.Logging then
Body.LogSpecs('');
FAutoStream := nil;
ExtAdd;
Result := Errors.Code;
end;
function TZMDLLOpr.AddStoreExtStr(Options: TZMAddStoreExts): string;
const
SuffixStrings: array [TZMAddStoreSuffixEnum] of PChar = ('gif', 'png', 'z',
'zip', 'zoo', 'arc', 'lzh', 'arj', 'taz', 'tgz', 'lha', 'rar', 'ace', 'cab',
'gz', 'gzip', 'jar', 'exe', '', 'jpg', 'jpeg', '7zp', 'mp3', 'wmv', 'wma',
'dvr-ms', 'avi');
var
O: TZMAddStoreSuffixEnum;
begin
Result := '';
for O := low(TZMAddStoreSuffixEnum) to high(TZMAddStoreSuffixEnum) do
if (O <> AssEXT) and (O in Options) then
Result := Result + '.' + string(SuffixStrings[O]) + ':';
if AssEXT in Options then
Result := Result + ExtAddStoreSuffixes;
end;
(* ? TZMDLLOpr.AddStreamToFile
// 'FileName' is the name you want to use in the zip file to
// store the contents of the stream under.
*)
function TZMDLLOpr.AddStreamToFile(const FileName: string;
FileDate, FileAttr: Dword): Integer;
var
FatDate: Word;
FatTime: Word;
Fn: string;
Ft: TFileTime;
St: TSystemTime;
begin
Fn := Trim(FileName);
if (Length(Fn) = 0) and (IncludeSpecs.Count > 0) then
Fn := Trim(IncludeSpecs[0]);
if (Fn = '') or (ZipStream.Size = 0) then
begin
Result := ZM_Error({_LINE_}372, ZE_NothingToZip);
Exit;
end;
Result := DriveFolders.ExpandPath(Fn, Fn);
if Result < 0 then
Exit;
// strip drive etc like 1.79
if ExtractFileDrive(Fn) <> '' then
Fn := Copy(Fn, 3, Length(Fn) - 2);
if (Fn <> '') and ((Fn[1] = '/') or (Fn[1] = '\')) then
Fn := Copy(Fn, 2, Length(Fn) - 1);
if NameIsBad(Fn, False) then
begin
Result := Body.PrepareErrMsg(ZE_BadFileName, [Fn], {_LINE_}385, __UNIT__);
ShowError(Result);
end;
if Result = 0 then
begin
Body.ClearIncludeSpecs;
IncludeSpecs.Add('0:' + Fn);
if FileDate = 0 then
begin
GetLocalTime(St);
SystemTimeToFileTime(St, Ft);
FileTimeToDosDateTime(Ft, FatDate, FatTime);
FileDate := (Dword(FatDate) shl 16) + FatTime;
end;
FAutoStream := ZipStream;
FAutoDate := FileDate;
FAutoAttr := FileAttr;
ExtAdd;
Result := -Errors.ExtCode; // ????
end;
end;
procedure TZMDLLOpr.AfterConstruction;
begin
inherited;
FDLLOperKey := 0;
FHeldData := nil;
FCB := TDZCallback.Create;
end;
function TZMDLLOpr.AllocDLLCommand(const FileName: string): PDLLCommands;
var
Opts: Cardinal;
begin
Result := AllocMem(SizeOf(TDLLCommands));
DLLTargetName := FileName;
ZeroMemory(Result, SizeOf(TDLLCommands));
Result^.FVersion := DELZIPVERSION; // version we expect the DLL to be
Result^.FCaller := Self; // point to our VCL instance; returned in Report
Result^.ZCallbackFunc := ZCallback;
// pass addr of function to be called from DLL
Result^.ZStreamFunc := ZStreamCallback;
Result^.FEncodedAs := Ord(Lister.Encoding); // how to interpret existing names
Result^.FFromPage := Lister.Encoding_CP;
if Verbosity >= ZvTrace then
Result^.FVerbosity := -1
else
if Verbosity >= ZvVerbose then
Result^.FVerbosity := 1
else
Result^.FVerbosity := 0;
{ if tracing, we want verbose also }
// used for dialogs (like the pwd dialogs)
if Unattended then
Result^.FHandle := 0
else
Result^.FHandle := Master.Handle;
Result^.FSS := nil;
Opts := DLL_OPT_Quiet; // no DLL error reporting
Result^.FOptions := Opts;
end;
procedure TZMDLLOpr.BeforeDestruction;
begin
FIsDestructing := True; // stop callbacks
AbortDLL;
if FHeldData <> nil then
begin
FreeMem(FHeldData); // release held data
FHeldData := nil;
end;
FreeAndNil(FCB);
inherited;
end;
procedure TZMDLLOpr.CancelSet(Value: Integer);
begin
AbortDLL; // is this too soon
end;
procedure TZMDLLOpr.DestroyDLLCmd(var Rec: PDLLCommands);
begin
if Rec <> nil then
begin
FreeMem(Rec);
Rec := nil;
end;
end;
(* ? TZMDLLOpr.DLLCallback
*)
function TZMDLLOpr.DLLCallback(ZCallBackRec: PZCallBackStruct): Integer;
var
Action: TActionCodes;
begin
Result := CALLBACK_UNHANDLED;
if FIsDestructing then // in destructor return
begin
Exit;
end;
CB.Assign(ZCallBackRec);
Action := TActionCodes(CB.ActionCode and 63);
try
case Action of
ZacMessage:
DLL_Message(Result);
ZacItem .. ZacXProgress:
DLL_Progress(Action, Result);
ZacNewName:
// request for a new path+name just before zipping or extracting
DLL_SetAddName(Result);
ZacPassword:
// New or other password needed during Extract()
DLL_Password(Result);
ZacCRCError:
;
ZacOverwrite:
;
ZacSkipped:
// Extract(UnZip) and Skipped
DLL_Skipped(Result);
ZacComment:
// Add(Zip) FileComments.
DLL_Comment(Result);
ZacData:
// Set Extra Data
DLL_Data(Result);
ZacExtName:
// request for a new path+name just before zipping or extracting
DLL_ExtName(Result);
ZacKey:
begin
FDLLOperKey := CB.Arg1;
Result := 0;
end;
ZacArg:
DLL_Arg(Result);
else
Result := CALLBACK_IGNORED; // unknown
end; { end case }
if (Action < ZacKey) and (Action > ZacMessage) then
begin
KeepAlive;
end;
if Cancel <> 0 then
begin
Result := CALLBACK_CANCEL;
if Body.Logging then
Body.Log(ZM_Error({_LINE_}539, 0), '[CANCEL sent]');
end;
except
on E: Exception do
begin
if FEventErr = '' then
// catch first exception only
FEventErr := ' #' + IntToStr(Ord(Action)) + ' "' + E.Message + '"';
Cancel := ZE_Except;
Result := CALLBACK_EXCEPTION;
if Body.Logging then
Body.Log(ZM_Error({_LINE_}550, 0), '[CALLBACK Exception sent] ' +
FEventErr);
end;
end;
end;
function TZMDLLOpr.DLLStreamClose(ZStreamRec: PZStreamRec): Integer;
var
Strm: TStream;
begin
Result := CALLBACK_UNHANDLED;
if TObject(ZStreamRec^.StrmP) is TStream then
begin
Strm := TStream(ZStreamRec^.StrmP);
if Strm = ZipStream then
begin
FAutoStream := nil;
ZStreamRec^.StrmP := nil;
Result := CALLBACK_TRUE;
end;
end;
end;
function TZMDLLOpr.DLLStreamCreate(ZStreamRec: PZStreamRec): Integer;
begin
Result := CALLBACK_UNHANDLED;
ZStreamRec^.StrmP := nil;
if Assigned(FAutoStream) then
begin
Result := CALLBACK_TRUE;
ZStreamRec^.StrmP := FAutoStream;
FAutoStream.Position := 0;
end;
end;
function TZMDLLOpr.DLLStreamIdentify(ZStreamRec: PZStreamRec): Integer;
begin
Result := CALLBACK_UNHANDLED;
if Assigned(FAutoStream) then
begin
Result := CALLBACK_TRUE;
ZStreamRec^.ArgLL := FAutoStream.Size;
ZStreamRec^.ArgD := FAutoDate;
ZStreamRec^.ArgA := FAutoAttr;
end;
end;
// ALL interface structures BYTE ALIGNED
(* stream operation arg usage
zacStIdentify,
// IN BufP = name
IN Number = number
OUT ArgLL = Size, ArgD = Date, ArgA = Attrs
zacStCreate,
// IN BufP = name
IN Number = number
OUT StrmP = stream
zacStClose,
IN Number = number
IN StrmP = stream
OUT StrmP = stream (= NULL)
zacStPosition,
IN Number = number
IN StrmP = stream, ArgLL = offset, ArgI = from
OUT ArgLL = position
zacStRead,
IN Number = number
IN StrmP = stream, BufP = buf, ArgI = count
OUT ArgI = bytes read
zacStWrite
IN Number = number
IN StrmP = stream, BufP = buf, ArgI = count
OUT ArgI = bytes written
*)
function TZMDLLOpr.DLLStreamOp(Op: TZStreamActions;
ZStreamRec: PZStreamRec): Integer;
begin
Result := CALLBACK_UNHANDLED;
case Op of
ZsaIdentify: // get details for named stream
Result := DLLStreamIdentify(ZStreamRec);
ZsaCreate: // Assign a stream
Result := DLLStreamCreate(ZStreamRec);
ZsaClose: // defaults to freeing stream if not ZipStream
Result := DLLStreamClose(ZStreamRec);
end;
Body.TraceFmt('Stream operation %d on %d returns %d',
[Ord(Op), ZStreamRec^.Number, Result], {_LINE_}637, __UNIT__);
end;
// return proper ErrCode for dll error
function TZMDLLOpr.DLLToErrCode(DLL_error: Integer): Integer;
begin
Result := DLL_error and $3F;
if Result <> 0 then
Result := ZD_GOOD + Result;
if Result > ZD_SKIPPED then
Result := ZD_ERROR;
end;
(* Arg1 = argument
0 = filename
1 = password
2 = RootDir
3 = ExtractDir
4 = Zip comment
5 = FSpecArgs Arg3 = Index
6 = FSpecArgsExcl Arg3 = Index
*)
procedure TZMDLLOpr.DLL_Arg(var Result: Integer);
var
Arg: TCBArgs;
Idx: Integer;
Sr: string;
begin
if CB.Arg1 <= Cardinal(Ord(high(TCBArgs))) then
begin
Arg := TCBArgs(CB.Arg1);
Idx := CB.Arg3;
Sr := '';
if (Arg in [ZcbFSpecArgs, ZcbFSpecArgsExcl]) and (Idx < 0) then
Result := CALLBACK_ERROR
else
if Arg = ZcbComment then
begin // always Ansi
CB.SetComment(Lister.ZipComment);
Result := CALLBACK_TRUE;
end
else
begin
Result := CALLBACK_TRUE;
case Arg of
ZcbFilename:
Sr := DLLTargetName;
ZcbPassword:
Sr := Password;
ZcbRootDir:
Sr := RootDir;
ZcbExtractDir:
; // sr := ExtrBaseDir;
ZcbFSpecArgs:
begin
if Idx >= IncludeSpecs.Count then
Result := CALLBACK_UNHANDLED
else
Sr := IncludeSpecs[Idx];
CB.Arg3 := IncludeSpecs.Count;
end;
ZcbFSpecArgsExcl:
begin
if Idx >= ExcludeSpecs.Count then
Result := CALLBACK_UNHANDLED
else
Sr := ExcludeSpecs[Idx];
CB.Arg3 := ExcludeSpecs.Count;
end;
ZcbSpecials:
Sr := AddStoreExtStr(AddStoreSuffixes);
ZcbTempPath:
Sr := Lister.TempDir;
end;
CB.Msg := Sr;
end;
end
else
Result := CALLBACK_ERROR;
end;
procedure TZMDLLOpr.DLL_Comment(var Result: Integer);
var
FileComment: string;
IsChanged: Boolean;
Ti: Integer;
TmpFileComment: TZMFileCommentEvent;
begin
TmpFileComment := Master.OnFileComment;
if Assigned(TmpFileComment) then
begin
FileComment := CB.Msg2;
IsChanged := False;
TmpFileComment(Master, CB.Msg, FileComment, IsChanged);
if IsChanged then
begin
Result := CALLBACK_TRUE;
Ti := Length(FileComment);
if Ti > 255 then
begin
Ti := 255;
FileComment := Copy(FileComment, 1, 255);
end;
CB.Msg := FileComment;
CB.Arg1 := Ti;
end;
end;
if (Cancel <> 0) and (Result >= CALLBACK_IGNORED) then
Result := CALLBACK_CANCEL;
end;
procedure TZMDLLOpr.DLL_Data(var Result: Integer);
var
Dat: TZMRawBytes;
DataChanged: Boolean;
DatSize: Int64;
IsChanged: Boolean;
LevelChanged: Boolean;
Lvl: Integer;
TmpFileExtra: TZMFileExtraEvent;
TmpSetCompLevel: TZMSetCompLevel;
Xlen: Integer;
begin
TmpFileExtra := Master.OnFileExtra;
TmpSetCompLevel := Master.OnSetCompLevel;
LevelChanged := False;
DataChanged := False;
if Assigned(TmpSetCompLevel) then
begin
IsChanged := False;
Lvl := Integer(CB.Arg2);
TmpSetCompLevel(Master, CB.Msg, Lvl, IsChanged);
if IsChanged and (Lvl in [0 .. 9]) then
begin
CB.Arg2 := Lvl;
LevelChanged := True;
end;
end;
if Assigned(TmpFileExtra) then
begin
DatSize := CB.Arg1; // old Size
SetLength(Dat, DatSize);
if DatSize > 0 then
CB.CopyData(PByte(@Dat[1]), DatSize);
IsChanged := False;
TmpFileExtra(Master, CB.Msg, Dat, IsChanged);
if IsChanged then
begin
DataChanged := True;
Xlen := Length(Dat);
if Xlen > 2047 then // limit
Xlen := 2047;
CB.SetData(PByte(@Dat[1]), Xlen);
end;
end;
if DataChanged then
begin
if LevelChanged then
Result := CALLBACK_3
else
Result := CALLBACK_TRUE;
end
else
begin
if LevelChanged then
Result := CALLBACK_2;
end;
end;
procedure TZMDLLOpr.DLL_ExtName(var Result: Integer);
var
BaseDir: string;
IsChanged: Boolean;
Msg: string;
OldFileName: string;
TmpSetExtName: TZMSetExtNameEvent;
function IsPathOnly(const F: string): Boolean;
var
C: Char;
begin
Result := False;
if F <> '' then
begin
C := F[Length(F)];
if (C = PathDelim) or (C = PathDelimAlt) then
Result := True;
end;
end;
begin
TmpSetExtName := Master.OnSetExtName;
if Assigned(TmpSetExtName) then
begin
Msg := CB.Msg2;
BaseDir := SetSlashW(Msg, PsdExternal);
Msg := CB.Msg;
OldFileName := Msg;
IsChanged := False;
TmpSetExtName(Master, OldFileName, BaseDir, IsChanged);
if IsChanged and (OldFileName <> Msg) and
(IsPathOnly(OldFileName) = IsPathOnly(Msg)) then
begin
CB.Msg := OldFileName;
Result := CALLBACK_TRUE;
end;
end;
end;
procedure TZMDLLOpr.DLL_Message(var Result: Integer);
var
ECode: Integer;
Erm: string;
ErrorCode: Integer;
EType: Integer;
ExtCode: Integer;
Show: Boolean;
TmpMessage: TZMMessageEvent;
begin
Erm := CB.Msg;
ErrorCode := CB.Arg1;
ExtCode := 0;
ECode := 0;
EType := 0;
if ErrorCode <> 0 then
begin
EType := ErrorCode and DZM_Type_Mask;
if EType = DZM_Warning then
Inc(Warnings);
ExtCode := ErrorCode or $40000000;
if ((ErrorCode and $FF) <> 0) and (EType >= DZM_Warning) and
(EType > (Errors.ExtCode and DZM_Type_Mask)) then
Errors.ExtCode := ExtCode; // remember last error
ECode := DLLToErrCode(ErrorCode);
if (EType >= DZM_Message) and ((ErrorCode and DZM_MessageBit) <> 0) then
Erm := ZipLoadStr(ECode) + Erm;
// W'll always keep the last ErrorCode
if (ECode <> 0) and (Errors.Code = 0) then
begin
if (FEventErr <> '') and (ECode = _DZ_ERR_ABORT) then
Erm := ZipFmtLoadStr(ZE_EventEx, [FEventErr]);
end;
Errors.ErrMessage := Erm;
end;
if Body.Logging then
Body.Log(ExtCode, Erm);
TmpMessage := Master.OnMessage;
if Assigned(TmpMessage) then
begin
Show := False;
case EType of
DZM_General, DZM_Error, DZM_Warning, DZM_Message:
Show := True;
DZM_Verbose:
if Verbosity >= ZvVerbose then
Show := True;
DZM_Trace:
if Verbosity >= ZvTrace then
Show := True;
end;
if Show then
begin
if ECode <> 0 then
ECode := ZM_Error({_LINE_}901, ECode);
TmpMessage(Master, ECode, Erm);
end;
end;
KeepAlive; // process messages or check terminate
end;
procedure TZMDLLOpr.DLL_Password(var Result: Integer);
var
IsZip: Boolean;
Pwd: string;
Response: TmsgDlgBtn;
RptCount: Longword;
TmpPasswordError: TZMPasswordErrorEvent;
begin
Pwd := '';
RptCount := CB.Arg1;
Response := MbOK;
IsZip := CB.IsZip;
TmpPasswordError := Master.OnPasswordError;
if Assigned(TmpPasswordError) then
begin
TmpPasswordError(Master, IsZip, Pwd, CB.Msg, RptCount, Response);
if Response <> MbOK then
Pwd := '';
end
else
if IsZip then
Pwd := Master.GetAddPassword(Response)
else
Pwd := Master.GetExtrPassword(Response);
if Pwd <> '' then
begin
CB.Msg := Pwd;
Result := CALLBACK_TRUE;
end
else
begin // no password
RptCount := 0;
Result := CALLBACK_2;
end;
if RptCount > 15 then
RptCount := 15;
CB.Arg1 := RptCount;
if Response = MbCancel then // Cancel
begin
Result := CALLBACK_2;
end
else
if Response = MbNoToAll then // Cancel all
begin
Result := CALLBACK_3;
end
else
if Response = MbAbort then // Abort
begin
Cancel := ZS_Abort;
Result := CALLBACK_ABORT;
end;
end;
procedure TZMDLLOpr.DLL_Progress(Action: TActionCodes; var Result: Integer);
begin
case Action of
ZacItem .. ZacEndOfBatch:
Progress.Written(CB.Written);
end;
case Action of
ZacTick:
KeepAlive;
ZacItem:
Progress.NewItem(CB.Msg, CB.File_Size);
ZacProgress:
Progress.Advance(CB.File_Size);
ZacEndOfBatch:
Progress.EndBatch;
ZacCount:
Progress.TotalCount := CB.Arg1;
ZacSize:
Progress.TotalSize := CB.File_Size;
ZacXItem:
Progress.NewXtraItem(CB.Msg, CB.File_Size);
ZacXProgress:
Progress.AdvanceXtra(CB.File_Size);
end;
Result := 0;
if (Action = ZacItem) and (CB.File_Size = -1) and (Progress.Stop) then
Result := CALLBACK_TRUE;
end;
procedure TZMDLLOpr.DLL_SetAddName(var Result: Integer);
var
IsChanged: Boolean;
M: string;
M2: string;
OldFileName: string;
OrigName: string;
TmpSetAddName: TZMSetAddNameEvent;
begin
TmpSetAddName := Master.OnSetAddName;