Switch from tabs to 4 spaces

1 files changed, 246 insertions, 246 deletions

diff --git a/portato/backend/system_interface.py b/portato/backend/system_interface.py
index 1cb0ed1..6f13042 100644
--- a/portato/backend/system_interface.py
+++ b/portato/backend/system_interface.py
@@ -11,282 +11,282 @@
 # Written by René 'Necoro' Neumann <necoro@necoro.net>
 
 class SystemInterface (object):
-	
-	SET_ALL = "__portato_all__"
-	SET_TREE = "__portato_tree__"
-	SET_INSTALLED = "__portato_installed__"
-	SET_UNINSTALLED = "__portato_uninstalled__"
-
-	def has_set_support (self):
-		"""Signals, whether this backend supports sets.
-
-		@rtype: boolean
-		"""
-		raise NotImplementedError
-
-	def get_sets (self):
-		"""Returns all supported sets in tuples consisting of name and description.
-		If sets aren't supported, at least "world" and "system" have to be returned.
-
-		@rtype: iter(string, string)
-		"""
-		raise NotImplementedError
-
-	def get_version (self):
-		"""Returns the version of the used backend.
-
-		@rtype: string
-		"""
-		raise NotImplementedError
-
-	def split_cpv (self, cpv):
-		"""Splits a cpv into all its parts.
-
-		@param cpv: the cpv to split
-		@type cpv: string
-		@returns: the splitted cpv
-		@rtype: string[]
-		"""
-
-		raise NotImplementedError
-
-	def cpv_matches (self, cpv, criterion):
-		"""Checks whether a cpv matches a specific criterion.
-
-		@param cpv: cpv to check
-		@type cpv: string
-		@param criterion: criterion to check against
-		@type criterion: string
-		@returns: match result
-		@rtype: boolean
-		"""
-
-		raise NotImplementedError
-	
-	def find_best(self, list, only_cpv = False):
-		"""Returns the best package out of a list of packages.
-
-		@param list: the list of packages to select from
-		@type list: string[]
-		@param only_cpv: do not return package but only the cpv
-		@type only_cpv: boolean
-
-		@returns: the best package
-		@rtype: backend.Package or string
-		"""
-		
-		raise NotImplementedError
-
-	def find_best_match (self, search_key, masked = False, only_installed = False, only_cpv = False):
-		"""Finds the best match in the portage tree. It does not find masked packages!
-		
-		@param search_key: the key to find in the portage tree
-		@type search_key: string
-		@param masked: if True, also look for masked packages
-		@type masked: boolean
-		@param only_installed: if True, only installed packages are searched
-		@type only_installed: boolean
-		@param only_cpv: do not return package but only the cpv
-		@type only_cpv: boolean
-		
-		@returns: the package found or None
-		@rtype: backend.Package or string
-		"""
-
-		raise NotImplementedError
-
-	def find_packages (self, key, pkgSet = SET_ALL, masked = False, with_version = True, only_cpv = False):
-		"""This returns a list of packages matching the key.
-		As key, it is allowed to use basic regexps (".*") and the normal package specs. But not a combination
-		of them.
-		
-		@param key: the key to look for
-		@type key: string
-		@param all: the package set to use
-		@type all: string
-		@param masked: if True, also look for masked packages
-		@type masked: boolean
-		@param with_version: if True, return CPVs - else CP
-		@type with_version: boolean
-		@param only_cpv: do not return package but only the cpv. if with_version is False, this is ignored
-		@type only_cpv: boolean
-		
-		@returns: list of found packages
-		@rtype: backend.Package[] or string[]
-		"""
-
-		raise NotImplementedError
-
-	def list_categories (self, name = None):
-		"""Finds all categories matching a name or all if no name is specified.
-
-		@param name: the name to look for - it is expanded to .*name.* ; if None, all categories are returned
-		@type name: string or None
-		@returns: all categories found
-		@rtype: string[]
-		"""
-
-		raise NotImplementedError
-
-	def sort_package_list(self, pkglist):
-		"""Sorts a package list in the same manner portage does.
-		
-		@param pkglist: list to sort
-		@type pkglist: Packages[]
-		"""
-
-		raise NotImplementedError
-		
-	def reload_settings (self):
-		"""Reloads portage."""
-
-		raise NotImplementedError
-
-	def update_world (self, newuse = False, deep = False):
-		"""Calculates the packages to get updated in an update world.
-
-		@param newuse: Checks if a use-flag has a different state then to install time.
-		@type newuse: boolean
-		@param deep: Not only check world packages but also there dependencies.
-		@type deep: boolean
-		@returns: a list of the tuple (new_package, old_package)
-		@rtype: (backend.Package, backend.Package)[]
-		"""
-
-		raise NotImplementedError
-
-	def get_updated_packages (self):
-		"""Returns the packages for which a newer package is available in the portage tree and installable (thus not masked).
-		This differs from update_world as it takes all installed packages into account but ignores changed useflags.
-
-		@returns: the list of new packages
-		@rtype: backend.Package[]
-		"""
-
-		raise NotImplementedError
-
-	def get_use_desc (self, flag, package = None):
-		"""Returns the description of a specific useflag or None if no desc was found. 
-		If a package is given (in the <cat>/<name> format) the local use descriptions are searched too.
-		
-		@param flag: flag to get the description for
-		@type flag: string
-		@param package: name of a package: if given local use descriptions are searched too
-		@type package: cp-string
-		@returns: found description
-		@rtype: string
-		"""
-
-		raise NotImplementedError
-
-	def get_global_settings(self, key):
-		"""Returns the value of a global setting, i.e. ARCH, USE, ROOT, DISTDIR etc.
-		
-		@param key: the setting to return
-		@type key: string
-		@returns: the value of this setting
-		@rtype: string
-		"""
+    
+    SET_ALL = "__portato_all__"
+    SET_TREE = "__portato_tree__"
+    SET_INSTALLED = "__portato_installed__"
+    SET_UNINSTALLED = "__portato_uninstalled__"
+
+    def has_set_support (self):
+        """Signals, whether this backend supports sets.
+
+        @rtype: boolean
+        """
+        raise NotImplementedError
+
+    def get_sets (self):
+        """Returns all supported sets in tuples consisting of name and description.
+        If sets aren't supported, at least "world" and "system" have to be returned.
+
+        @rtype: iter(string, string)
+        """
+        raise NotImplementedError
+
+    def get_version (self):
+        """Returns the version of the used backend.
+
+        @rtype: string
+        """
+        raise NotImplementedError
+
+    def split_cpv (self, cpv):
+        """Splits a cpv into all its parts.
+
+        @param cpv: the cpv to split
+        @type cpv: string
+        @returns: the splitted cpv
+        @rtype: string[]
+        """
+
+        raise NotImplementedError
+
+    def cpv_matches (self, cpv, criterion):
+        """Checks whether a cpv matches a specific criterion.
+
+        @param cpv: cpv to check
+        @type cpv: string
+        @param criterion: criterion to check against
+        @type criterion: string
+        @returns: match result
+        @rtype: boolean
+        """
+
+        raise NotImplementedError
+    
+    def find_best(self, list, only_cpv = False):
+        """Returns the best package out of a list of packages.
+
+        @param list: the list of packages to select from
+        @type list: string[]
+        @param only_cpv: do not return package but only the cpv
+        @type only_cpv: boolean
+
+        @returns: the best package
+        @rtype: backend.Package or string
+        """
+        
+        raise NotImplementedError
+
+    def find_best_match (self, search_key, masked = False, only_installed = False, only_cpv = False):
+        """Finds the best match in the portage tree. It does not find masked packages!
+        
+        @param search_key: the key to find in the portage tree
+        @type search_key: string
+        @param masked: if True, also look for masked packages
+        @type masked: boolean
+        @param only_installed: if True, only installed packages are searched
+        @type only_installed: boolean
+        @param only_cpv: do not return package but only the cpv
+        @type only_cpv: boolean
+        
+        @returns: the package found or None
+        @rtype: backend.Package or string
+        """
+
+        raise NotImplementedError
+
+    def find_packages (self, key, pkgSet = SET_ALL, masked = False, with_version = True, only_cpv = False):
+        """This returns a list of packages matching the key.
+        As key, it is allowed to use basic regexps (".*") and the normal package specs. But not a combination
+        of them.
+        
+        @param key: the key to look for
+        @type key: string
+        @param all: the package set to use
+        @type all: string
+        @param masked: if True, also look for masked packages
+        @type masked: boolean
+        @param with_version: if True, return CPVs - else CP
+        @type with_version: boolean
+        @param only_cpv: do not return package but only the cpv. if with_version is False, this is ignored
+        @type only_cpv: boolean
+        
+        @returns: list of found packages
+        @rtype: backend.Package[] or string[]
+        """
+
+        raise NotImplementedError
+
+    def list_categories (self, name = None):
+        """Finds all categories matching a name or all if no name is specified.
+
+        @param name: the name to look for - it is expanded to .*name.* ; if None, all categories are returned
+        @type name: string or None
+        @returns: all categories found
+        @rtype: string[]
+        """
+
+        raise NotImplementedError
+
+    def sort_package_list(self, pkglist):
+        """Sorts a package list in the same manner portage does.
+        
+        @param pkglist: list to sort
+        @type pkglist: Packages[]
+        """
+
+        raise NotImplementedError
+        
+    def reload_settings (self):
+        """Reloads portage."""
+
+        raise NotImplementedError
+
+    def update_world (self, newuse = False, deep = False):
+        """Calculates the packages to get updated in an update world.
+
+        @param newuse: Checks if a use-flag has a different state then to install time.
+        @type newuse: boolean
+        @param deep: Not only check world packages but also there dependencies.
+        @type deep: boolean
+        @returns: a list of the tuple (new_package, old_package)
+        @rtype: (backend.Package, backend.Package)[]
+        """
+
+        raise NotImplementedError
+
+    def get_updated_packages (self):
+        """Returns the packages for which a newer package is available in the portage tree and installable (thus not masked).
+        This differs from update_world as it takes all installed packages into account but ignores changed useflags.
+
+        @returns: the list of new packages
+        @rtype: backend.Package[]
+        """
+
+        raise NotImplementedError
+
+    def get_use_desc (self, flag, package = None):
+        """Returns the description of a specific useflag or None if no desc was found. 
+        If a package is given (in the <cat>/<name> format) the local use descriptions are searched too.
+        
+        @param flag: flag to get the description for
+        @type flag: string
+        @param package: name of a package: if given local use descriptions are searched too
+        @type package: cp-string
+        @returns: found description
+        @rtype: string
+        """
+
+        raise NotImplementedError
+
+    def get_global_settings(self, key):
+        """Returns the value of a global setting, i.e. ARCH, USE, ROOT, DISTDIR etc.
+        
+        @param key: the setting to return
+        @type key: string
+        @returns: the value of this setting
+        @rtype: string
+        """
 
-		raise NotImplementedError
+        raise NotImplementedError
 
-	def new_package (self, cpv):
-		"""Returns an instance of the appropriate Package-Subclass.
+    def new_package (self, cpv):
+        """Returns an instance of the appropriate Package-Subclass.
 
-		@param cpv: the cpv to create the package from
-		@type cpv: string
-		@returns: a new Package-object.
-		@rtype: Package
-		"""
+        @param cpv: the cpv to create the package from
+        @type cpv: string
+        @returns: a new Package-object.
+        @rtype: Package
+        """
 
-		raise NotImplementedError
+        raise NotImplementedError
 
-	def get_config_path (self):
-		"""Returns the actual path to the config files.
-		
-		@returns: the path, e.g. /etc/portage
-		@rtype: string
-		"""
+    def get_config_path (self):
+        """Returns the actual path to the config files.
+        
+        @returns: the path, e.g. /etc/portage
+        @rtype: string
+        """
 
-		raise NotImplementedError
+        raise NotImplementedError
 
-	def get_sync_command (self):
-		"""Returns the command(s) to run for syncing. This can be overridden by the user.
+    def get_sync_command (self):
+        """Returns the command(s) to run for syncing. This can be overridden by the user.
 
-		@returns: command to run
-		@rtype: string[]
-		"""
+        @returns: command to run
+        @rtype: string[]
+        """
 
-		raise NotImplementedError
+        raise NotImplementedError
 
-	def get_merge_command (self):
-		"""Returns the command(s) to run for the merging.
+    def get_merge_command (self):
+        """Returns the command(s) to run for the merging.
 
-		@returns: command to run
-		@rtype: string[]
-		"""
+        @returns: command to run
+        @rtype: string[]
+        """
 
-		raise NotImplementedError
+        raise NotImplementedError
 
-	def get_oneshot_option (self):
-		"""Returns the options to append for marking a merge as "oneshot".
+    def get_oneshot_option (self):
+        """Returns the options to append for marking a merge as "oneshot".
 
-		@returns: option(s) to append
-		@rtype: string[]
-		"""
+        @returns: option(s) to append
+        @rtype: string[]
+        """
 
-		raise NotImplementedError
+        raise NotImplementedError
 
-	def get_newuse_option (self):
-		"""Returns the options to append for marking a merge as "newuse".
+    def get_newuse_option (self):
+        """Returns the options to append for marking a merge as "newuse".
 
-		@returns: option(s) to append
-		@rtype: string[]
-		"""
+        @returns: option(s) to append
+        @rtype: string[]
+        """
 
-		raise NotImplementedError
+        raise NotImplementedError
 
-	def get_deep_option (self):
-		"""Returns the options to append for marking a merge as "deep".
+    def get_deep_option (self):
+        """Returns the options to append for marking a merge as "deep".
 
-		@returns: option(s) to append
-		@rtype: string[]
-		"""
+        @returns: option(s) to append
+        @rtype: string[]
+        """
 
-		raise NotImplementedError
+        raise NotImplementedError
 
-	def get_update_option (self):
-		"""Returns the options to append for marking a merge as "update".
+    def get_update_option (self):
+        """Returns the options to append for marking a merge as "update".
 
-		@returns: option(s) to append
-		@rtype: string[]
-		"""
+        @returns: option(s) to append
+        @rtype: string[]
+        """
 
-		raise NotImplementedError
+        raise NotImplementedError
 
-	def get_pretend_option (self):
-		"""Returns the options to append for marking a merge as "pretend".
+    def get_pretend_option (self):
+        """Returns the options to append for marking a merge as "pretend".
 
-		@returns: option(s) to append
-		@rtype: string[]
-		"""
+        @returns: option(s) to append
+        @rtype: string[]
+        """
 
-		raise NotImplementedError
+        raise NotImplementedError
 
-	def get_unmerge_option (self):
-		"""Returns the options to append for marking a merge as "unmerge".
+    def get_unmerge_option (self):
+        """Returns the options to append for marking a merge as "unmerge".
 
-		@returns: option(s) to append
-		@rtype: string[]
-		"""
+        @returns: option(s) to append
+        @rtype: string[]
+        """
 
-		raise NotImplementedError
+        raise NotImplementedError
 
-	def get_environment (self):
-		"""Returns a dictionary of environment variables to set prior to do an emerge.
+    def get_environment (self):
+        """Returns a dictionary of environment variables to set prior to do an emerge.
 
-		@returns: environment variables
-		@rtype: dict{string : string}
-		"""
+        @returns: environment variables
+        @rtype: dict{string : string}
+        """
 
-		raise NotImplementedError
+        raise NotImplementedError