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{ Copyright (C) <2005> <Andrew Haines> chmfilewriter.pas
This library is free software; you can redistribute it and/or modify it
under the terms of the GNU Library 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 Library General Public License
for more details.
You should have received a copy of the GNU Library General Public License
along with this library; if not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
}
{
See the file COPYING.FPC, included in this distribution,
for details about the copyright.
}
unit chmfilewriter;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, chmwriter;
type
TChmProject = class;
TChmProgressCB = procedure (Project: TChmProject; CurrentFile: String) of object;
{ TChmProject }
TChmProject = class
private
FWriter: TChmWriter;
FAutoFollowLinks: Boolean;
FDefaultFont: String;
FDefaultPage: String;
FFiles: TStrings;
FIndexFileName: String;
FMakeSearchable: Boolean;
FFileName: String;
FOnProgress: TChmProgressCB;
FOutputFileName: String;
FTableOfContentsFileName: String;
FTitle: String;
protected
function GetData(const DataName: String; out PathInChm: String; out FileName: String; var Stream: TStream): Boolean;
procedure LastFileAdded(Sender: TObject);
public
constructor Create;
destructor Destroy; override;
procedure LoadFromFile(AFileName: String);
procedure SaveToFile(AFileName: String);
procedure WriteChm(AOutStream: TStream);
function ProjectDir: String;
// though stored in the project file, it is only there for the program that uses the unit
// since we actually write to a stream
property OutputFileName: String read FOutputFileName write FOutputFileName;
property FileName: String read FFileName write FFileName;
property Files: TStrings read FFiles write FFiles;
property AutoFollowLinks: Boolean read FAutoFollowLinks write FAutoFollowLinks;
property TableOfContentsFileName: String read FTableOfContentsFileName write FTableOfContentsFileName;
property Title: String read FTitle write FTitle;
property IndexFileName: String read FIndexFileName write FIndexFileName;
property MakeSearchable: Boolean read FMakeSearchable write FMakeSearchable;
property DefaultPage: String read FDefaultPage write FDefaultPage;
property DefaultFont: String read FDefaultFont write FDefaultFont;
property OnProgress: TChmProgressCB read FOnProgress write FOnProgress;
end;
implementation
uses XmlCfg;
{ TChmProject }
function TChmProject.GetData(const DataName: String; out PathInChm: String; out
FileName: String; var Stream: TStream): Boolean;
begin
Result := False; // Return true to abort compressing files
TMemoryStream(Stream).LoadFromFile(ProjectDir+DataName);
WriteLn('Reading: ', DataName);
// clean up the filename
FileName := StringReplace(ExtractFileName(DataName), '\', '/', [rfReplaceAll]);
FileName := StringReplace(FileName, '//', '/', [rfReplaceAll]);
PathInChm := '/'+ExtractFilePath(DataName);
if Assigned(FOnProgress) then FOnProgress(Self, DataName);
end;
procedure TChmProject.LastFileAdded(Sender: TObject);
var
IndexStream: TFileStream;
TOCStream: TFileStream;
begin
// Assign the TOC and index files
if (IndexFileName <> '') and FileExists(IndexFileName) then begin
IndexStream := TFileStream.Create(IndexFileName, fmOpenRead);
FWriter.AppendIndex(IndexStream);
IndexStream.Free;
end;
if (TableOfContentsFileName <> '') and FileExists(TableOfContentsFileName) then begin
TOCStream := TFileStream.Create(TableOfContentsFileName, fmOpenRead);
FWriter.AppendTOC(TOCStream);
TOCStream.Free;
end;
end;
constructor TChmProject.Create;
begin
FFiles := TStringList.Create;
end;
destructor TChmProject.Destroy;
begin
FFIles.Free;
inherited Destroy;
end;
procedure TChmProject.LoadFromFile(AFileName: String);
var
Cfg: TXMLConfig;
FileCount: Integer;
I: Integer;
begin
Cfg := TXMLConfig.Create(nil);
Cfg.Filename := AFileName;
FileName := AFileName;
Files.Clear;
FileCount := Cfg.GetValue('Files/Count/Value', 0);
for I := 0 to FileCount-1 do begin
Files.Add(Cfg.GetValue('Files/FileName'+IntToStr(I)+'/Value',''));
end;
IndexFileName := Cfg.GetValue('Files/IndexFile/Value','');
TableOfContentsFileName := Cfg.GetValue('Files/TOCFile/Value','');
AutoFollowLinks := Cfg.GetValue('Settings/AutoFollowLinks/Value', False);
MakeSearchable := Cfg.GetValue('Settings/MakeSearchable/Value', False);
DefaultPage := Cfg.GetValue('Settings/DefaultPage/Value', '');
Title := Cfg.GetValue('Settings/Title/Value', '');
OutputFileName := Cfg.GetValue('Settings/OutputFileName/Value', '');
DefaultFont := Cfg.GetValue('Settings/DefaultFont/Value', '');
Cfg.Free;
end;
procedure TChmProject.SaveToFile(AFileName: String);
var
Cfg: TXMLConfig;
I: Integer;
begin
Cfg := TXMLConfig.Create(nil);
Cfg.StartEmpty := True;
Cfg.Filename := FileName;
Cfg.Clear;
Cfg.SetValue('Files/Count/Value', Files.Count);
for I := 0 to Files.Count-1 do begin
Cfg.SetValue('Files/FileName'+IntToStr(I)+'/Value', Files.Strings[I]);
end;
Cfg.SetValue('Files/IndexFile/Value', IndexFileName);
Cfg.SetValue('Files/TOCFile/Value', TableOfContentsFileName);
Cfg.SetValue('Settings/AutoFollowLinks/Value', AutoFollowLinks);
Cfg.SetValue('Settings/MakeSearchable/Value', MakeSearchable);
Cfg.SetValue('Settings/DefaultPage/Value', DefaultPage);
Cfg.SetValue('Settings/Title/Value', Title);
Cfg.SetValue('Settings/OutputFileName/Value', OutputFileName);
Cfg.SetValue('Settings/DefaultFont/Value', DefaultFont);
Cfg.Free;
end;
function TChmProject.ProjectDir: String;
begin
Result := ExtractFilePath(FileName);
end;
procedure TChmProject.WriteChm(AOutStream: TStream);
var
Writer: TChmWriter;
TOCStream,
IndexStream: TFileStream;
begin
IndexStream := nil;
TOCStream := nil;
Writer := TChmWriter.Create(AOutStream, False);
// our callback to get data
Writer.OnGetFileData := @GetData;
Writer.OnLastFile := @LastFileAdded;
// give it the list of files
Writer.FilesToCompress.AddStrings(Files);
// now some settings in the chm
Writer.DefaultPage := DefaultPage;
Writer.Title := Title;
Writer.DefaultFont := DefaultFont;
Writer.FullTextSearch := MakeSearchable;
// and write!
Writer.Execute;
if Assigned(TOCStream) then TOCStream.Free;
if Assigned(IndexStream) then IndexStream.Free;
end;
end.
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