/usr/lib/python2.7/dist-packages/wstool/config.py is in python-wstool 0.1.13-1.
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#
# Copyright (c) 2009, Willow Garage, 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 Willow Garage, 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.
import os
from wstool.config_elements import AVCSConfigElement, OtherConfigElement, SetupConfigElement
from wstool.common import MultiProjectException, normabspath, realpath_relation, normalize_uri
class Config:
"""
A config is a set of config elements, each of which defines a folder or file
and possibly a VCS from which to update the folder.
"""
def __init__(self, path_specs, install_path, config_filename=None, extended_types=None, merge_strategy='KillAppend'):
"""
:param config_source_dict: A list (e.g. from yaml) describing the config, list of dict, each dict describing one element.
:param config_filename: When given a folder, Config
:param merge_strategy: how to deal with entries with equivalent path. See insert_element
will look in folder for file of that name for more config source, str.
"""
assert install_path is not None, "Install path is None"
if path_specs is None:
raise MultiProjectException("Passed empty source to create config")
# All API operations must grant that elements in trees have unique local_name and paths
# Also managed (VCS) entries must be disjunct (meaning one cannot be in a child folder of another managed one)
# The idea is that managed entries can safely be concurrently modified
self.trees = []
self.base_path = os.path.abspath(install_path)
self.config_filename = None
if config_filename is not None:
self.config_filename = os.path.basename(config_filename)
# using a registry primarily for unit test design
self.registry = {'svn': AVCSConfigElement,
'git': AVCSConfigElement,
'hg': AVCSConfigElement,
'bzr': AVCSConfigElement,
'tar': AVCSConfigElement}
if extended_types is not None:
self.registry = dict(list(self.registry.items()) + list(extended_types.items()))
for path_spec in path_specs:
action = self.add_path_spec(path_spec, merge_strategy)
# Usual action in init should be 'Append', anything else is unusual
if action == 'KillAppend':
print("Replace existing entry %s by appending." % path_spec.get_local_name())
elif action == 'MergeReplace':
print("Replace existing entry %s" % path_spec.get_local_name())
elif action == 'MergeKeep':
print("Keep existing entry %s, discard later one" % path_spec.get_local_name())
def __str__(self):
return str([str(x) for x in self.trees])
def add_path_spec(self, path_spec, merge_strategy='KillAppend'):
"""
add new element to this config with information provided in path spec
:param merge_strategy: see insert_element
:param path_specs: PathSpec objects
:returns: merge action taken, see insert_element
"""
# compute the local_path for the config element
local_path = normabspath(
path_spec.get_local_name(), self.get_base_path())
if os.path.isfile(local_path):
if path_spec.get_tags() is not None and 'setup-file' in path_spec.get_tags():
elem = SetupConfigElement(local_path,
os.path.normpath(path_spec.get_local_name()),
properties=path_spec.get_tags())
return self.insert_element(elem, merge_strategy)
else:
print("!!!!! Warning: Not adding file %s" % local_path)
return None
else:
# scmtype == None kept for historic reasons here
if (path_spec.get_scmtype() == None and
self.config_filename is not None and
os.path.exists(os.path.join(local_path, self.config_filename))):
print("!!!!! Warning: Not recursing into other config folder %s containing file %s" % (local_path, self.config_filename))
return None
if path_spec.get_scmtype() != None:
return self._insert_vcs_path_spec(path_spec, local_path, merge_strategy)
else:
# keep the given local name (e.g. relative path) for other
# elements, but normalize
local_name = os.path.normpath(path_spec.get_local_name())
elem = OtherConfigElement(local_path,
local_name,
path_spec.get_uri(),
path_spec.get_version(),
properties=path_spec.get_tags())
return self.insert_element(elem, merge_strategy)
def _insert_vcs_path_spec(self, path_spec, local_path, merge_strategy='KillAppend'):
# Get the version and source_uri elements
source_uri = normalize_uri(path_spec.get_uri(), self.get_base_path())
version = path_spec.get_version()
try:
local_name = os.path.normpath(path_spec.get_local_name())
elem = self._create_vcs_config_element(
path_spec.get_scmtype(),
local_path,
local_name,
source_uri,
version,
properties=path_spec.get_tags())
return self.insert_element(elem, merge_strategy)
except LookupError as ex:
raise MultiProjectException(
"Abstracted VCS Config failed. Exception: %s" % ex)
def insert_element(self, new_config_elt, merge_strategy='KillAppend'):
"""
Insert ConfigElement to self.trees, checking for duplicate
local-name or path first. In case local_name matches, follow
given strategy
- KillAppend (default): remove old element, append new at the end
- MergeReplace: remove first hit, insert new at that position.
- MergeKeep: Discard new element
In case local path matches but local name does not, raise Exception
:returns: the action performed None, 'Append', 'KillAppend',
'MergeReplace', 'MergeKeep'
"""
removals = []
replaced = False
for index, loop_elt in enumerate(self.trees):
# if paths are os.path.realpath, no symlink problems.
relationship = realpath_relation(loop_elt.get_path(),
new_config_elt.get_path())
if relationship == 'SAME_AS':
if os.path.normpath(loop_elt.get_local_name()) != os.path.normpath(new_config_elt.get_local_name()):
raise MultiProjectException("Elements with different local_name target the same path: %s, %s" % (loop_elt, new_config_elt))
else:
if (loop_elt == new_config_elt):
return None
if (merge_strategy == 'MergeReplace' or
(merge_strategy == 'KillAppend' and
index == len(self.trees) - 1)):
self.trees[index] = new_config_elt
# keep looping to check for overlap when replacing non-
# scm with scm entry
replaced = True
if (loop_elt.is_vcs_element or not new_config_elt.is_vcs_element):
return 'MergeReplace'
elif merge_strategy == 'KillAppend':
removals.append(loop_elt)
elif merge_strategy == 'MergeKeep':
return 'MergeKeep'
else:
raise LookupError(
"No such merge strategy: %s" % str(merge_strategy))
elif ((relationship == 'CHILD_OF' and new_config_elt.is_vcs_element())
or (relationship == 'PARENT_OF' and loop_elt.is_vcs_element())):
# we do not allow any elements to be children of scm elements
# to allow for parallel updates and because wstool may
# delete scm folders on update, and thus subfolders can be
# deleted with their parents
raise MultiProjectException(
"Managed Element paths overlap: %s, %s" % (loop_elt,
new_config_elt))
if replaced:
return 'MergeReplace'
for loop_elt in removals:
self.trees.remove(loop_elt)
self.trees.append(new_config_elt)
if len(removals) > 0:
return 'KillAppend'
return 'Append'
def remove_element(self, local_name):
"""
Removes element in the tree with the given local name (should be only one)
:returns: True if such an element was found
"""
removals = []
for tree_el in self.trees:
if tree_el.get_local_name() == local_name:
removals.append(tree_el)
if len(removals) > 0:
for tree_el in removals:
self.trees.remove(tree_el)
return True
return False
def _create_vcs_config_element(self, scmtype, path, local_name, uri, version='', properties=None):
try:
eclass = self.registry[scmtype]
except LookupError:
raise MultiProjectException(
"No VCS client registered for vcs type %s" % scmtype)
return eclass(scmtype=scmtype,
path=path,
local_name=local_name,
uri=uri,
version=version,
properties=properties)
def get_base_path(self):
return self.base_path
def get_config_filename(self):
return self.config_filename
def get_source(self):
"""
:returns: all elements that got added by user keystrokes
(CLI and changed .rosinstall)
"""
source_aggregate = []
for tree_el in self.trees:
source_aggregate.append(tree_el.get_path_spec())
return source_aggregate
def get_config_elements(self):
source_aggregate = []
for tree_el in self.trees:
source_aggregate.append(tree_el)
return source_aggregate
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