The main function I wanted was something to evaluate expressions so I could
write tasks like this:
<cc>
<sources>
<includes name="cmn/*.cpp"/>
<includes name="xbox/*.cpp" if="${platform} == xbox"/>
<includes name="ps2/*.cpp" if="${platform} == ps2"/>
</sources>
</cc>
I figured this was a two step process:
1. Getting a function that could evaluate expressions
2. Changing how if/unless work so that the string passed in gets passed to
the Evaluate function.
Without point 2 the above would look like:
<includes name="xbox.cpp" if="${Evaluate(${platform} == xbox)"/>
I'm not sure about others but this seems a lot cleaner than this:
<script>
// some goop I can't remember
switch (Project.Properties["platform"]) {
case "xbox":
Project.Properties.Add("platform.xbox", "true");
break;
case "ps2":
Project.Properties.Add("platform.ps2", "true");
break;
case "win":
Project.Properties.Add("platform.win", "true");
break;
// ...
}
// some goop I can't remember
</script>
<cc>
<sources>
<includes name="cmn/*.cpp"/>
<includes name="win/*.cpp" if="${platform.win}"/>
<includes name="xbox/*.cpp" if="${platform.xbox}"/>
<includes name="ps2/*.cpp" if="${platform.ps2}"/>
</sources>
</cc>
And this still wouldn't allow me to write:
<includes name="shared/foo.cpp" if="${platform} == ps2 || ${platform}
== xbox"/>
Also how about doing something if a file or directory exist?
<include buildfile="UserSettings.xml" if="${FileExists(UserSettings.xml)}"/>
I do understand the slipperly slope of this but what I'm trying to do is
make writing complicated tasks feasible. I totally understand where xslt
went and I pulled my hair out there as well. What I'm proposing is just a
different way of running 'tasks' that return information in a way that is
more intuitive than the xml way of doing things. To prevent something like
this from happending:
<available propertyname="UserSettings-available"
file="UserSettings.xml"/>
<include buildfile="UserSettings.xml" if="UserSettings-available"/>
Maybe we can find a better solution?
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