--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/env/lib/python3.9/site-packages/boto/gs/lifecycle.py	Mon Mar 22 18:12:50 2021 +0000
@@ -0,0 +1,224 @@
+# Copyright 2013 Google Inc.
+#
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish, dis-
+# tribute, sublicense, and/or sell copies of the Software, and to permit
+# persons to whom the Software is furnished to do so, subject to the fol-
+# lowing conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
+# ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
+# SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+# IN THE SOFTWARE.
+
+from boto.exception import InvalidLifecycleConfigError
+
+# Relevant tags for the lifecycle configuration XML document.
+LIFECYCLE_CONFIG      = 'LifecycleConfiguration'
+RULE                  = 'Rule'
+ACTION                = 'Action'
+DELETE                = 'Delete'
+SET_STORAGE_CLASS     = 'SetStorageClass'
+CONDITION             = 'Condition'
+AGE                   = 'Age'
+CREATED_BEFORE        = 'CreatedBefore'
+NUM_NEWER_VERSIONS    = 'NumberOfNewerVersions'
+IS_LIVE               = 'IsLive'
+MATCHES_STORAGE_CLASS = 'MatchesStorageClass'
+
+# List of all action elements.
+LEGAL_ACTIONS = [DELETE, SET_STORAGE_CLASS]
+# List of all condition elements.
+LEGAL_CONDITIONS = [AGE, CREATED_BEFORE, NUM_NEWER_VERSIONS, IS_LIVE,
+                    MATCHES_STORAGE_CLASS]
+# List of conditions elements that may be repeated.
+LEGAL_REPEATABLE_CONDITIONS = [MATCHES_STORAGE_CLASS]
+
+class Rule(object):
+    """
+    A lifecycle rule for a bucket.
+
+    :ivar action: Action to be taken.
+
+    :ivar action_text: The text value for the specified action, if any.
+
+    :ivar conditions: A dictionary of conditions that specify when the action
+    should be taken. Each item in the dictionary represents the name and
+    value (or a list of multiple values, if applicable) of a condition.
+    """
+
+    def __init__(self, action=None, action_text=None, conditions=None):
+        self.action = action
+        self.action_text = action_text
+        self.conditions = conditions or {}
+
+        # Name of the current enclosing tag (used to validate the schema).
+        self.current_tag = RULE
+
+    def validateStartTag(self, tag, parent):
+        """Verify parent of the start tag."""
+        if self.current_tag != parent:
+            raise InvalidLifecycleConfigError(
+                'Invalid tag %s found inside %s tag' % (tag, self.current_tag))
+
+    def validateEndTag(self, tag):
+        """Verify end tag against the start tag."""
+        if tag != self.current_tag:
+            raise InvalidLifecycleConfigError(
+                'Mismatched start and end tags (%s/%s)' %
+                (self.current_tag, tag))
+
+    def startElement(self, name, attrs, connection):
+        if name == ACTION:
+            self.validateStartTag(name, RULE)
+        elif name in LEGAL_ACTIONS:
+            self.validateStartTag(name, ACTION)
+            # Verify there is only one action tag in the rule.
+            if self.action is not None:
+                raise InvalidLifecycleConfigError(
+                    'Only one action tag is allowed in each rule')
+            self.action = name
+        elif name == CONDITION:
+            self.validateStartTag(name, RULE)
+        elif name in LEGAL_CONDITIONS:
+            self.validateStartTag(name, CONDITION)
+            # Verify there is no duplicate conditions.
+            if (name in self.conditions and
+                name not in LEGAL_REPEATABLE_CONDITIONS):
+                raise InvalidLifecycleConfigError(
+                    'Found duplicate non-repeatable conditions %s' % name)
+        else:
+            raise InvalidLifecycleConfigError('Unsupported tag ' + name)
+        self.current_tag = name
+
+    def endElement(self, name, value, connection):
+        self.validateEndTag(name)
+        if name == RULE:
+            # We have to validate the rule after it is fully populated because
+            # the action and condition elements could be in any order.
+            self.validate()
+        elif name == ACTION:
+            self.current_tag = RULE
+        elif name in LEGAL_ACTIONS:
+            if name == SET_STORAGE_CLASS and value is not None:
+                self.action_text = value.strip()
+            self.current_tag = ACTION
+        elif name == CONDITION:
+            self.current_tag = RULE
+        elif name in LEGAL_CONDITIONS:
+            self.current_tag = CONDITION
+            # Some conditions specify a list of values.
+            if name in LEGAL_REPEATABLE_CONDITIONS:
+                if name not in self.conditions:
+                    self.conditions[name] = []
+                self.conditions[name].append(value.strip())
+            else:
+                self.conditions[name] = value.strip()
+        else:
+            raise InvalidLifecycleConfigError('Unsupported end tag ' + name)
+
+    def validate(self):
+        """Validate the rule."""
+        if not self.action:
+            raise InvalidLifecycleConfigError(
+                'No action was specified in the rule')
+        if not self.conditions:
+            raise InvalidLifecycleConfigError(
+                'No condition was specified for action %s' % self.action)
+
+    def to_xml(self):
+        """Convert the rule into XML string representation."""
+        s = ['<' + RULE + '>']
+        s.append('<' + ACTION + '>')
+        if self.action_text:
+            s.extend(['<' + self.action + '>',
+                      self.action_text,
+                      '</' + self.action + '>'])
+        else:
+            s.append('<' + self.action + '/>')
+        s.append('</' + ACTION + '>')
+        s.append('<' + CONDITION + '>')
+        for condition_name in self.conditions:
+            if condition_name not in LEGAL_CONDITIONS:
+                continue
+            if condition_name in LEGAL_REPEATABLE_CONDITIONS:
+                condition_values = self.conditions[condition_name]
+            else:
+                # Wrap condition value in a list, allowing us to iterate over
+                # all condition values using the same logic.
+                condition_values = [self.conditions[condition_name]]
+            for condition_value in condition_values:
+                s.extend(['<' + condition_name + '>',
+                          condition_value,
+                          '</' + condition_name + '>'])
+        s.append('</' + CONDITION + '>')
+        s.append('</' + RULE + '>')
+        return ''.join(s)
+
+class LifecycleConfig(list):
+    """
+    A container of rules associated with a lifecycle configuration.
+    """
+
+    def __init__(self):
+        # Track if root tag has been seen.
+        self.has_root_tag = False
+
+    def startElement(self, name, attrs, connection):
+        if name == LIFECYCLE_CONFIG:
+            if self.has_root_tag:
+                raise InvalidLifecycleConfigError(
+                    'Only one root tag is allowed in the XML')
+            self.has_root_tag = True
+        elif name == RULE:
+            if not self.has_root_tag:
+                raise InvalidLifecycleConfigError('Invalid root tag ' + name)
+            rule = Rule()
+            self.append(rule)
+            return rule
+        else:
+            raise InvalidLifecycleConfigError('Unsupported tag ' + name)
+
+    def endElement(self, name, value, connection):
+        if name == LIFECYCLE_CONFIG:
+            pass
+        else:
+            raise InvalidLifecycleConfigError('Unsupported end tag ' + name)
+
+    def to_xml(self):
+        """Convert LifecycleConfig object into XML string representation."""
+        s = ['<?xml version="1.0" encoding="UTF-8"?>']
+        s.append('<' + LIFECYCLE_CONFIG + '>')
+        for rule in self:
+            s.append(rule.to_xml())
+        s.append('</' + LIFECYCLE_CONFIG + '>')
+        return ''.join(s)
+
+    def add_rule(self, action, action_text, conditions):
+        """
+        Add a rule to this Lifecycle configuration.  This only adds the rule to
+        the local copy.  To install the new rule(s) on the bucket, you need to
+        pass this Lifecycle config object to the configure_lifecycle method of
+        the Bucket object.
+
+        :type action: str
+        :param action: Action to be taken.
+
+        :type action_text: str
+        :param action_text: Value for the specified action.
+
+        :type conditions: dict
+        :param conditions: A dictionary of conditions that specify when the
+        action should be taken. Each item in the dictionary represents the name
+        and value of a condition.
+        """
+        rule = Rule(action, action_text, conditions)
+        self.append(rule)