Difference between revisions of "LazAutoUpdater"
From Free Pascal wiki
Jump to navigationJump to searchMinesadorada (talk | contribs) m (Tidy up) |
Minesadorada (talk | contribs) m (→Version.xml) |
||
| Line 28: | Line 28: | ||
</APPCONFIG> | </APPCONFIG> | ||
| − | + | The code to create it: | |
uses XMLConf | uses XMLConf | ||
Var XMLConfig1:TXMLConfig; | Var XMLConfig1:TXMLConfig; | ||
| Line 41: | Line 41: | ||
XMLConfig1.Flush; | XMLConfig1.Flush; | ||
end; | end; | ||
| + | |||
| + | The code to read it: | ||
| + | uses XMLConf | ||
| + | Var XMLConfig1 :TXMLConfig; | ||
| + | szAppVer :String; | ||
| + | szOtherMouleVer :String; | ||
| + | begin | ||
| + | XMLConfig1.Clear; | ||
| + | XMLConfig1.RootName := 'APPCONFIG'; | ||
| + | XMLConfig1.Filename := 'version.xml'; | ||
| + | XMLConfig1.OpenKey('ProgramInfo/Version'); | ||
| + | szAppVer:= XMLConfig1.GetValue('GUI', '0.0.0'); // Default is '0.0.0' | ||
| + | szOtherMouleVer:= XMLConfig1.GetValue('OtherModule', '0.0.0'); // Default is '0.0.0' | ||
| + | XMLConfig1.CloseKey; | ||
==Location of files== | ==Location of files== | ||
Revision as of 18:10, 30 July 2014
Lazarus Auto-Updater
SourceForge Project
Workflow
The Laz AutoUpdater workflow for updating a running application is as follows:
- App downloads a small 'version.xml' file from sourceforge with version info (it can do this at start-up)
- App compares with its own internal version
- If new version available, App downloads it from Sourceforge into an /updates folder
- App uses TProcess to start the console updater, passing it info in the command line
- updater copies a downloaded 'whatsnew.txt' into the App folder and enters Sleep for a few seconds
- Meanwhile App has entered loop checking whether a 'whatsnew.txt' file has been copied into it's directory
- App detects 'whatsnew.txt' and Closes. (in other words the TProcess has started successfully)
- Updater copies /updates/UpdatedApp to App directory.
- Updater uses TProcess to start the updated app
- On Form.Show, App displays 'whatsnew.txt' then deletes it
Version.xml
The format is as follows:
<?xml version="1.0" encoding="utf-8"?>
<APPCONFIG>
<ProgramInfo>
<Version GUI="0.0.2" OtherModule="0.1.0"/>
</ProgramInfo>
</APPCONFIG>
The code to create it:
uses XMLConf
Var XMLConfig1:TXMLConfig;
begin
XMLConfig1.Clear;
XMLConfig1.RootName := 'APPCONFIG';
XMLConfig1.Filename := 'version.xml';
XMLConfig1.OpenKey('ProgramInfo/Version');
XMLConfig1.SetValue('GUI', '0.0.2');
XMLConfig1.SetValue('OtherModule', '0.1.0');
XMLConfig1.CloseKey;
XMLConfig1.Flush;
end;
The code to read it:
uses XMLConf
Var XMLConfig1 :TXMLConfig;
szAppVer :String;
szOtherMouleVer :String;
begin
XMLConfig1.Clear;
XMLConfig1.RootName := 'APPCONFIG';
XMLConfig1.Filename := 'version.xml';
XMLConfig1.OpenKey('ProgramInfo/Version');
szAppVer:= XMLConfig1.GetValue('GUI', '0.0.0'); // Default is '0.0.0'
szOtherMouleVer:= XMLConfig1.GetValue('OtherModule', '0.0.0'); // Default is '0.0.0'
XMLConfig1.CloseKey;
Location of files
- In your SourceForge Files section, make a folder called 'updates'
- Upload 'version.xml' into it
- Upload the zip file containing your updated EXE and the file 'whatsnew.txt'
- The application installer (Inno Setup?) goes into your Files section as normal
- The Users should only have to download the installer once. All the subsequent versions will go into the /updates folder as above
Work-In-Progress...
