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#! /usr/bin/env python
# encoding: utf-8
# Calle Rosenquist, 2017 (xbreak)
"""
Create task that copies source files to the associated build node.
This is useful to e.g. construct a complete Python package so it can be unit tested
without installation.
Source files to be copied can be specified either in `buildcopy_source` attribute, or
`source` attribute. If both are specified `buildcopy_source` has priority.
Examples::
def build(bld):
bld(name = 'bar',
features = 'py buildcopy',
source = bld.path.ant_glob('src/bar/*.py'))
bld(name = 'py baz',
features = 'buildcopy',
buildcopy_source = bld.path.ant_glob('src/bar/*.py') + ['src/bar/resource.txt'])
"""
import os, shutil
from waflib import Errors, Task, TaskGen, Utils, Node, Logs
@TaskGen.before_method('process_source')
@TaskGen.feature('buildcopy')
def make_buildcopy(self):
"""
Creates the buildcopy task.
"""
def to_src_nodes(lst):
"""Find file nodes only in src, TaskGen.to_nodes will not work for this since it gives
preference to nodes in build.
"""
if isinstance(lst, Node.Node):
if not lst.is_src():
raise Errors.WafError('buildcopy: node %s is not in src'%lst)
if not os.path.isfile(lst.abspath()):
raise Errors.WafError('buildcopy: Cannot copy directory %s (unsupported action)'%lst)
return lst
if isinstance(lst, str):
lst = [x for x in Utils.split_path(lst) if x and x != '.']
node = self.bld.path.get_src().search_node(lst)
if node:
if not os.path.isfile(node.abspath()):
raise Errors.WafError('buildcopy: Cannot copy directory %s (unsupported action)'%node)
return node
node = self.bld.path.get_src().find_node(lst)
if node:
if not os.path.isfile(node.abspath()):
raise Errors.WafError('buildcopy: Cannot copy directory %s (unsupported action)'%node)
return node
raise Errors.WafError('buildcopy: File not found in src: %s'%os.path.join(*lst))
nodes = [ to_src_nodes(n) for n in getattr(self, 'buildcopy_source', getattr(self, 'source', [])) ]
if not nodes:
Logs.warn('buildcopy: No source files provided to buildcopy in %s (set `buildcopy_source` or `source`)',
self)
return
node_pairs = [(n, n.get_bld()) for n in nodes]
self.create_task('buildcopy', [n[0] for n in node_pairs], [n[1] for n in node_pairs], node_pairs=node_pairs)
class buildcopy(Task.Task):
"""
Copy for each pair `n` in `node_pairs`: n[0] -> n[1].
Attribute `node_pairs` should contain a list of tuples describing source and target:
node_pairs = [(in, out), ...]
"""
color = 'PINK'
def keyword(self):
return 'Copying'
def run(self):
for f,t in self.node_pairs:
t.parent.mkdir()
shutil.copy2(f.abspath(), t.abspath())
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