Dropping in software construction toolkit.

site_scons/site_tools/publish.py

Index: site_scons/site_tools/publish.py
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--- site_scons/site_tools/publish.py	(revision 0)
+++ site_scons/site_tools/publish.py	(revision 0)
@@ -0,0 +1,185 @@
+#!/usr/bin/python2.4
+# Copyright 2008, Google Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Publish tool for SCons."""
+
+
+__published = {}        # List of published resources
+
+#------------------------------------------------------------------------------
+
+
+class PublishItem(object):
+  """Item to be published."""
+
+  def __init__(self, source, subdir):
+    """Initialize object.
+
+    Args:
+      source: Source node.
+      subdir: If not None, subdirectory to copy node into in
+          ReplicatePublished().
+    """
+    object.__init__(self)
+    self.source = source
+    self.subdir = subdir
+
+#------------------------------------------------------------------------------
+
+
+def _InitializePublish(self):
+  """Re-initializes published resources.
+
+  Args:
+    self: Parent environment
+  """
+  self=self     # Silence gpylint
+
+  # Clear the dict of published resources
+  __published.clear()
+
+
+def ReplicatePublished(self, target, group_name, resource_type):
+  """Replicate published resources for the group to the target directory.
+
+  Args:
+    self: Environment in which this function was called.
+    target: Target directory for resources.
+    group_name: Name of resource group, or a list of names of resource groups.
+    resource_type: Type of resources (string), or a list of resource types.
+
+    Uses the subdir parameter passed to Publish() when replicating source nodes
+    to the target.
+
+  Returns:
+    The list of target nodes from the calls to Replicate().
+
+  Since this is based on Replicate(), it will also use the REPLICATE_REPLACE
+  variable, if it's set in the calling environment.
+  """
+  target_path = self.Dir(target).abspath
+
+  dest_nodes = []
+  for group in self.Flatten(group_name):
+    for resource in self.Flatten(resource_type):
+      # Get items for publish group and resource type
+      items = __published.get(self.subst(group), {}).get(resource, [])
+      for i in items:
+        if i.subdir:
+          dest_nodes += self.Replicate(target_path + '/' + i.subdir, i.source)
+        else:
+          dest_nodes += self.Replicate(target_path, i.source)
+  return dest_nodes
+
+
+def GetPublished(self, group_name, resource_type):
+  """Returns a list of the published resources of the specified type.
+
+  Args:
+    self: Environment in which this function was called.
+    group_name: Name of resource group, or a list of names of resource groups.
+    resource_type: Type of resources (string), or a list of resource types.
+
+  Returns:
+    A flattened list of the source nodes from calls to Publish() for the
+        specified group and resource type.  Returns an empty list if there are
+        no matching resources.
+  """
+  source_list = []
+  for group in self.Flatten(group_name):
+    # Get items for publish group and resource type
+    for resource in self.Flatten(resource_type):
+      items = __published.get(self.subst(group), {}).get(resource, [])
+      for i in items:
+        source_list.append(i.source)
+
+  return source_list
+
+
+def Publish(self, group_name, resource_type, source, subdir=None):
+  """Publishes resources for use by other scripts.
+
+  Args:
+    self: Environment in which this function was called.
+    group_name: Name of resource group.
+    resource_type: Type of resources (string).
+    source: Source file(s) to copy.  May be a string, Node, or a list of
+        mixed strings or Nodes.  Strings will be passed through env.Glob() to
+        evaluate wildcards.  If a source evaluates to a directory, the entire
+        directory will be recursively copied.
+    subdir: Subdirectory to which the resources should be copied, relative to
+        the primary directory for that resource type, if not None.
+  """
+  if subdir is None:
+    subdir = ''         # Make string so we can append to it
+
+  # Evaluate SCons variables in group name
+  group_name = self.subst(group_name)
+
+  # Get list of sources
+  items = []
+  for source_entry in self.Flatten(source):
+    if type(source_entry) == str:
+      # Search for matches for each source entry
+      source_nodes = self.Glob(source_entry)
+    else:
+      # Source entry is already a file or directory node; no need to glob it
+      source_nodes = [source_entry]
+    for s in source_nodes:
+      if str(s.__class__) == 'SCons.Node.FS.Dir':
+        # Recursively publish all files in subdirectory.  Since glob('*')
+        # doesn't match dot files, also glob('.*').
+        self.Publish(group_name, resource_type,
+                     [s.abspath + '/*', s.abspath + '/.*'],
+                     subdir=subdir + '/' + s.name)
+      else:
+        items.append(PublishItem(s, subdir))
+
+  # Publish items, if any
+  if items:
+    # Get publish group
+    if group_name not in __published:
+      __published[group_name] = {}
+    group = __published[group_name]
+    if resource_type not in group:
+      group[resource_type] = []
+
+    # Publish items into group
+    group[resource_type] += items
+
+
+def generate(env):
+  # NOTE: SCons requires the use of this name, which fails gpylint.
+  """SCons entry point for this tool."""
+
+  env.AddMethod(_InitializePublish)
+  env.AddMethod(GetPublished)
+  env.AddMethod(Publish)
+  env.AddMethod(ReplicatePublished)