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250 lines
8.6 KiB
Python
250 lines
8.6 KiB
Python
#!/usr/bin/env python
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#
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# base.py
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#
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# (c) Copyright 2009-2010 Michael Towers (larch42 at googlemail dot com)
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#
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# This file is part of the larch project.
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#
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# larch is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# larch is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with larch; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#
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#----------------------------------------------------------------------------
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# 2010.01.27
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"""This module handles the basic framework and configuration of the
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larch build system.
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Access configs only via config.get and config.set (as far as possible).
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"""
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import sys, os, shutil
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from ConfigParser import SafeConfigParser
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config_dir = ".config/larch" # within the user's home directory
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config_file = "larch-config" # within config_dir
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project0 = "larch0"
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# Some default values for the config file
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defaults = { "install_path" : "/home/larchbuild",
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"pacman_cache" : "/var/cache/pacman/pkg",
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"profile" : "", # => Use default, needs initialization
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"platform" : "", # => Needs initialization
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"uselocalmirror" : "",
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"localmirror" : "",
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"usemirrorlist" : "",
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"dl_progress" : "", # Not used
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"filebrowser" : "xdgx-open $",
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"html_reader" : "xdg-open $", # Not used
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"medium_iso" : "yes", # "yes" / ""
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"medium_btldr" : "grub", # "grub" / "syslinux" / "none"
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"medium_search" : "search", # "search" / "uuid" / "label" / "device"
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"medium_label" : "CHAKRA",
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"isoA" : "chakra",
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"isopublisher" : "designed by Chakra-Developers-Team, licence: GPL",
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}
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class LarchConfig:
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# The following paths are all based on the installation directory (as
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# they would be found within a chroot command), so if you want to
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# address them from the host, run them through the ipath function.
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larch_build_dir = "/.larch"
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medium_dir = "/.larch/cd"
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overlay_build_dir = "/.larch/tmp/overlay"
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system_sqf = "/.larch/system.sqf"
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def __init__(self, home):
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self.current_dir = os.getcwd()
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self.home_dir = home
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# The working directory is by default within the config directory.
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# If you want it somewhere else, move it there and sym-link it from
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# the original path.
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self.working_dir = os.path.join(home, config_dir, "working_dir")
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self.profile_dir = os.path.join(self.working_dir, "MyProfiles")
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if not os.path.isdir(self.working_dir):
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# If the config directory itself doesn't yet exist, this will
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# also create that.
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os.makedirs(self.working_dir)
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self.pacman = "/usr/bin/pacman"
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if not os.path.isfile(self.pacman):
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# If the host is not Arch, there will be no pacman.
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# (If there is some other program at "/usr/bin/pacman" that's
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# a real spanner in the works.)
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self.pacman = base_dir + "/pacman"
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if not os.path.isfile(self.pacman):
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fatal_error(_("No pacman executable found"))
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# Use the ConfigParser module to handle the low level aspects of
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# the config file.
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self.config = SafeConfigParser()
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self.config_file = os.path.join(home, config_dir, config_file)
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if not os.path.isfile(self.config_file):
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open(self.config_file, 'w').close()
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self.config.read(self.config_file)
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sections = self.config.sections()
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# Use "_" as the top-level section (ConfigParser can't handle
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# unsectioned data)
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if "_" not in sections:
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self.newsection("_")
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# The main (only?) setting in this section is the project, which
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# in most cases will never change from the default.
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if self.config.has_option("_", "project"):
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project = self.config.get("_", "project")
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else:
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project = project0
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self.architecture = os.uname()[4]
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if self.architecture == "i686":
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self.platforms = ["i686"]
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elif self.architecture == "x86_64":
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self.platforms = ["x86_64", "i686"]
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else:
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fatal_error(_("Unknown platform: '%s'") % self.architecture)
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self.setproject(project)
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def ipath(self, path=""):
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p = self.get("install_path").rstrip("/")
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x = path.strip("/")
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if x:
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return p + "/" + x
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elif p:
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return p
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else:
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return "/"
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def setproject(self, project):
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if project not in self.getsections():
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# Create a section for the project.
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self.newsection(project)
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# Set as current project.
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self.config.set("_", "project", project)
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self.update()
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self.project = project
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if not self.get("profile"):
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self.set("profile", self.defaultprofile())
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if not self.get("platform"):
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# Is cross-platform building possible? It is conceivable that
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# an i686 larch system could be built on an x86_64 platform.
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self.set("platform", self.architecture)
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def get(self, item):
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if self.config.has_option(self.project, item):
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return self.config.get(self.project, item)
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elif defaults.has_key(item):
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return defaults[item]
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sys.stderr.write(_("Unknown configuration option: %s\n") % item)
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sys.stderr.flush()
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assert False
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def checkprofile(self, profile):
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for proj in self.getsections():
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if proj == self.project:
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continue
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if self.config.get(proj, "profile") == profile:
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return proj
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return None
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def set(self, item, value):
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self.config.set(self.project, item, value)
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self.update()
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def newsection(self, section):
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self.config.add_section(section)
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def getsections(self):
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s = self.config.sections()
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s.remove("_")
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return s
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def update(self):
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configfile = open(self.config_file, 'w')
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self.config.write(configfile)
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configfile.close()
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def profiles(self):
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return os.listdir(self.profile_dir)
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def defaultprofile(self):
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dprofile = self.profile_dir + "/default"
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if not os.path.isdir(dprofile):
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self.copyprofile()
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return dprofile
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def copyprofile(self, pname="default", psource=None):
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"""Create a new profile folder with the given name in the working
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directory by copying it from the path in 'psource' (by default
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the folder of the same name within the profiles folder supplied
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in the larch distribution). Note that if 'psource' is given it must
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include the source profile name, this is not added, thus allowing
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the name to be changed.
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"""
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if pname:
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if not psource:
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psource = os.path.join(base_dir, "profiles", pname)
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elif psource:
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pname = os.path.basename(psource)
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else:
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config_error(_("No name for new profile"))
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return None
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ppath = os.path.join(self.profile_dir, pname)
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if os.path.isdir(ppath):
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config_error(_("Profile '%s' already exists") % pname)
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return None
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shutil.copytree(psource, ppath, symlinks=True)
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return ppath
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def setprofile(self, name):
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self.set("profile", os.path.join(self.profile_dir, name))
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def renameprofile(self, newname):
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pnew = os.path.join(self.profile_dir, newname)
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pold = self.get("profile")
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if os.path.exists(pnew):
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config_error(_("Profile '%s' exists already.") % newname)
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return False
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os.rename(pold, pnew)
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self.set("profile", pnew)
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return True
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def deleteprofile(self, path):
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shutil.rmtree(path)
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if path == self.get("profile"):
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self.set("profile", self.defaultprofile())
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def deleteproject(self, name):
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if self.config.remove_section(name) and name == self.project:
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self.setproject(self.getsections()[0])
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