[Qbs] Writing a custom script by QBS

[Ben Lau]

On 20 October 2017 at 16:07, Christian Kandeler <christian.kandeler at qt.io>
wrote:

> On Fri, 20 Oct 2017 16:01:30 +0800
> Ben Lau <xbenlau at gmail.com> wrote:
>
> > What if it change the condition. Let's it just starts a web server for
> > providing mock data to test network service?
> >
> > For example, just run `http-server $SRCDIR/mockdata`? (Assume the data is
> > hard coded in a few set of json files)
>
> I'm not sure I get what you are saying, but if you mean that your rule
> should have no inputs (which is questionable in your example, since it
> should depend on the json files), then just set the rule's "requiresInputs"
> property to true.
>
>
> Christian
>

yes, I wish to have a rule without input. As the mock data is hard coded,
it is not generated dynamically.

But even an non-sense example is not a problem, I want to know a generic
way in writing a custom script by QBS and what is the restriction.

>From my first email, I have raised few examples

deployment = depends on a product's output , but no output file
starting a mock server = no dependence, just run a command, never stop, no
output file
code analysis = depends on the source files, may/may not have a output file
(eg, the eslint in Javascript)

To simulate the condition of `code analysis`, I made this script and just
run `ls` command (in real case, it should be replaced by another tools)

    Product {

        id: ls

        name: "ls"

        type: ["ls"]

        builtByDefault: false


        Rule {

            requiresInputs: false

            multiplex: true


            Artifact {

                filePath: "deploydummy"

                fileTags: ["ls"]

            }


            prepare: {

                var cmd = new Command("ls");

                cmd.description = "ls "

                return [cmd];

            }

        }

    }



That works for the first time, but if I run `qbs -p ls` again. That will
just report:

$ qbs -p ls

Restoring build graph from disk

Building for configuration default

Build done for configuration default.


Any solution for this problem?
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