1 files changed, 85 insertions, 0 deletions
diff --git a/extras/buildcopy.py b/extras/buildcopy.py
new file mode 100644
index 0000000..eaff7e6
--- /dev/null
+++ b/extras/buildcopy.py
@@ -0,0 +1,85 @@
+#! /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())