Re: Requirements Dysfunctional
Re: Requirements Dysfunctional
- Subject: Re: Requirements Dysfunctional
- From: Stéphane Sudre <email@hidden>
- Date: Thu, 13 Mar 2008 00:39:26 +0100
On Mar 12, 2008, at 7:37 PM, Jim Hoyt wrote:
Yo,
Using PackageMaker 3.01 with Leopard.
In Package Requirements set up a requirement as such:
File Exists on Target: /Applications/foldername/application_name
Required, false, is equal to true, ( i also tried true, is equal to
true)
I was hoping the installer would give me a warning that the folder/
file already existed, and do I want to overwrite it.
It just went ahead and overwrote the folder/file without any
interruption.
How can I set this up to not overwrite. I thought that was the
purpose of the Requirements setup...I am obviously missing
something...
any help deeply appreciated.
As far as I can tell (*), it's a bug in PackageMaker 3.
I tried to reproduce it with PM 3.0.1 by checking (in the Project
requirements) for the existence of /Applications/Utilities/Disk
Utility.app and your parameters.
The script I got when I build the package (10.5 flat format) is the
following one (**):
<script>
function pm_volume_check()
{
if(!(system.files.fileExistsAtPath(my.target.mountpoint + '/
Applications/Utilities/Disk Utility.app') == true))
{
my.result.title = 'Failure';
my.result.message = 'Error';
my.result.type = 'Fatal';
return false;
}
return true;
}
</script>
Which basically states (unless I'm drunk at the time of this writing):
if the file does not exist then fail
if the file exists then succeed
Basically, it's a double negation issue.
The script should look like this:
<script>
function pm_volume_check()
{
if (system.files.fileExistsAtPath(my.target.mountpoint + '/
Applications/Utilities/Disk Utility.app') == true)
{
my.result.title = 'Failure';
my.result.message = 'Error';
my.result.type = 'Fatal';
return false;
}
return true;
}
</script>
I filed a bug report against it (Bug ID #5796305). So if I'm writing
under influence, I will be the culprit.
(*) Don't trust me, I'm suffering from the did-I-really-close-the-
door syndrom on this one.
(**) It's not exactly this script because I reformatted the output
for it to be more readable.
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