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54 lines
1.1 KiB
Python
54 lines
1.1 KiB
Python
#! /usr/bin/env python
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"""
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Task objects may be created manually
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This is tedious and leads to spaghetti code
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Yet, it it interesting to see this to understand
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why the task generator abstraction is necessary
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$ waf configure build
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"""
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def configure(ctx):
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pass
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from waflib.Task import Task
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class cp(Task):
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def run(self):
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return self.exec_command('cp %s %s' % (
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self.inputs[0].abspath(),
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self.outputs[0].abspath()
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)
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)
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class cat(Task):
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def run(self):
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return self.exec_command('cat %s %s > %s' % (
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self.inputs[0].abspath(),
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self.inputs[1].abspath(),
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self.outputs[0].abspath()
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)
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)
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def build(ctx):
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cp_1 = cp(env=ctx.env)
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cp_1.set_inputs(ctx.path.find_resource('wscript'))
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cp_1.set_outputs(ctx.path.find_or_declare('foo.txt'))
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ctx.add_to_group(cp_1)
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cp_2 = cp(env=ctx.env)
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cp_2.set_inputs(ctx.path.find_resource('wscript'))
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cp_2.set_outputs(ctx.path.find_or_declare('bar.txt'))
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ctx.add_to_group(cp_2)
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cat_1 = cat(env=ctx.env)
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cat_1.set_inputs(cp_1.outputs + cp_2.outputs)
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cat_1.set_outputs(ctx.path.find_or_declare('foobar.txt'))
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ctx.add_to_group(cat_1)
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cat_1.set_run_after(cp_1)
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cat_1.set_run_after(cp_2)
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