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Diffstat (limited to 'portato/backend/package.py')
| -rw-r--r-- | portato/backend/package.py | 296 |
1 files changed, 296 insertions, 0 deletions
diff --git a/portato/backend/package.py b/portato/backend/package.py new file mode 100644 index 0000000..6f8a727 --- /dev/null +++ b/portato/backend/package.py @@ -0,0 +1,296 @@ +# -*- coding: utf-8 -*- +# +# File: portato/backend/package.py +# This file is part of the Portato-Project, a graphical portage-frontend. +# +# Copyright (C) 2006-2007 René 'Necoro' Neumann +# This is free software. You may redistribute copies of it under the terms of +# the GNU General Public License version 2. +# There is NO WARRANTY, to the extent permitted by law. +# +# Written by René 'Necoro' Neumann <necoro@necoro.net> + +from portato.backend import system +import flags + +class Package: + """This is a class abstracting a normal package which can be installed.""" + + def __init__ (self, cpv): + """Constructor. + + @param cpv: The cpv which describes the package to create. + @type cpv: string (cat/pkg-ver)""" + + self._cpv = cpv + self._scpv = system.split_cpv(self._cpv) + + if not self._scpv: + raise ValueError("invalid cpv: %s" % cpv) + + # + # implemented + # + + def set_testing(self, enable = True): + """Sets the actual testing status of the package. + + @param enable: if True it is masked as stable; if False it is marked as testing + @type enable: boolean""" + + flags.set_testing(self, enable) + + def remove_new_testing(self): + """Removes possible changed testing status.""" + + flags.remove_new_testing(self.get_cpv()) + + def set_masked (self, masking = False): + """Sets the masking status of the package. + + @param masking: if True: mask it; if False: unmask it + @type masking: boolean""" + + flags.set_masked(self, masked = masking) + + def remove_new_masked (self): + """Removes possible changed masking status.""" + + flags.remove_new_masked(self.get_cpv()) + + def get_installed_use_flags (self): + """Returns a list of the useflags enabled at installation time. If package is not installed, it returns an empty list. + + @returns: list of useflags enabled at installation time or an empty list + @rtype: string[]""" + + if self.is_installed(): + uses = set(self.get_use_flags().split()) # all set at installation time + iuses = set(self.get_all_use_flags(installed=True)) # all you can set for the package + + return list(uses.intersection(iuses)) + else: + return [] + + def get_new_use_flags (self): + """Returns a list of the new useflags, i.e. these flags which are not written to the portage-system yet. + + @returns: list of flags or [] + @rtype: string[]""" + + return flags.get_new_use_flags(self) + + def get_actual_use_flags (self): + """This returns the result of installed_use_flags + new_use_flags. If the package is not installed, it returns only the new flags. + + @return: list of flags + @rtype: string[]""" + + if self.is_installed(): + i_flags = self.get_installed_use_flags() + for f in self.get_new_use_flags(): + + if flags.invert_use_flag(f) in i_flags: + i_flags.remove(flags.invert_use_flag(f)) + + elif f not in i_flags: + i_flags.append(f) + return i_flags + else: + return self.get_new_use_flags() + + def set_use_flag (self, flag): + """Set a use-flag. + + @param flag: the flag to set + @type flag: string""" + + flags.set_use_flag(self, flag) + + def remove_new_use_flags (self): + """Remove all the new use-flags.""" + + flags.remove_new_use_flags(self) + + def is_use_flag_enabled (self, flag): + """Looks whether a given useflag is enabled for the package, taking all options + (ie. even the new flags) into account. + + @param flag: the flag to check + @type flag: string + @returns: True or False + @rtype: bool""" + + if self.is_installed() and flag in self.get_actual_use_flags(): # flags set during install + return True + + elif (not self.is_installed()) and flag in self.get_settings("USE").split() \ + and not flags.invert_use_flag(flag) in self.get_new_use_flags(): # flags that would be set + return True + + elif flag in self.get_new_use_flags(): + return True + + else: + return False + + def get_cpv(self): + """Returns full Category/Package-Version string""" + + return self._cpv + + def get_cp (self): + """Returns the cp-string. + + @returns: category/package. + @rtype: string""" + + return self.get_category()+"/"+self.get_name() + + def get_slot_cp (self): + + return ("%s:%s" % (self.get_cp(), self.get_env_var("SLOT"))) + + def get_name(self): + """Returns base name of package, no category nor version""" + + return self._scpv[1] + + def get_version(self): + """Returns version of package, with revision number""" + + v = self._scpv[2] + if self._scpv[3] != "r0": + v += "-" + self._scpv[3] + return v + + def get_category(self): + """Returns category of package""" + + return self._scpv[0] + + def get_package_path(self): + """Returns the path to where the ChangeLog, Manifest, .ebuild files reside""" + p = self.get_ebuild_path() + sp = p.split("/") + if len(sp): + import string + return string.join(sp[:-1],"/") + + # + # Not implemented + # + + def is_installed(self): + """Returns true if this package is installed (merged) + @rtype: boolean""" + + raise NotImplementedError + + def is_overlay(self): + """Returns true if the package is in an overlay. + @rtype: boolean""" + + raise NotImplementedError + + def is_in_system (self): + """Returns False if the package could not be found in the portage system. + + @return: True if in portage system; else False + @rtype: boolean""" + + raise NotImplementedError + + def is_missing_keyword(self): + """Returns True if the package is missing the needed keyword. + + @return: True if keyword is missing; else False + @rtype: boolean""" + + raise NotImplementedError + + def is_testing(self, use_keywords = False): + """Checks whether a package is marked as testing. + + @param use_keywords: Controls whether possible keywords are taken into account or not. + @type use_keywords: boolean + @returns: True if the package is marked as testing; else False. + @rtype: boolean""" + + raise NotImplementedError + + def is_masked (self): + """Returns True if either masked by package.mask or by profile. + + @returns: True if masked / False otherwise + @rtype: boolean""" + + raise NotImplementedError + + def get_all_use_flags (self, installed = False): + """Returns a list of _all_ useflags for this package, i.e. all useflags you can set for this package. + + @param installed: do not take the ones stated in the ebuild, but the ones it has been installed with + @type installed: boolean + + @returns: list of use-flags + @rtype: string[]""" + + raise NotImplementedError + + def get_matched_dep_packages (self, depvar): + """This function looks for all dependencies which are resolved. In normal case it makes only sense for installed packages, but should work for uninstalled ones too. + + @returns: unique list of dependencies resolved (with elements like "<=net-im/foobar-1.2.3") + @rtype: string[] + + @raises portato.DependencyCalcError: when an error occured during executing portage.dep_check()""" + + raise NotImplementedError + + def get_dep_packages (self, depvar = ["RDEPEND", "PDEPEND", "DEPEND"]): + """Returns a cpv-list of packages on which this package depends and which have not been installed yet. This does not check the dependencies in a recursive manner. + + @returns: list of cpvs on which the package depend + @rtype: string[] + + @raises portato.BlockedException: when a package in the dependency-list is blocked by an installed one + @raises portato.PackageNotFoundException: when a package in the dependency list could not be found in the system + @raises portato.DependencyCalcError: when an error occured during executing portage.dep_check()""" + + raise NotImplementedError + + def get_settings(self, key): + """Returns the value of the given key for this package (useful + for package.* files).""" + + raise NotImplementedError + + def get_ebuild_path(self): + """Returns the complete path to the .ebuild file""" + + raise NotImplementedError + + def get_env_var(self, var, tree = None): + """Returns one of the predefined env vars DEPEND, RDEPEND, SRC_URI,....""" + + raise NotImplementedError + + def get_use_flags(self): + + raise NotImplementedError + + def compare_version(self,other): + """Compares this package's version to another's CPV; returns -1, 0, 1""" + + raise NotImplementedError + + def matches (self, criterion): + """This checks, whether this package matches a specific verisioning criterion - e.g.: "<=net-im/foobar-1.2". + + @param criterion: the criterion to match against + @type criterion: string + @returns: True if matches; False if not + @rtype: boolean""" + + raise NotImplementedError |