wic: Rename /mic to /wic

As well as any other stray instances of mic in the codebase that can
be removed.

We don't really need to carry around legacy naming, and the history is
in git.

Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>

1 files changed, 156 insertions, 0 deletions

diff --git a/scripts/lib/wic/plugin.py b/scripts/lib/wic/plugin.py
new file mode 100644
index 0000000000..61c5859bac
--- /dev/null
+++ b/scripts/lib/wic/plugin.py
@@ -0,0 +1,156 @@
+#!/usr/bin/python -tt
+#
+# Copyright (c) 2011 Intel, Inc.
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the Free
+# Software Foundation; version 2 of the License
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+# for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc., 59
+# Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+import os, sys
+
+from wic import msger
+from wic import pluginbase
+from wic.utils import errors
+from wic.utils.oe.misc import *
+
+__ALL__ = ['PluginMgr', 'pluginmgr']
+
+PLUGIN_TYPES = ["imager", "source"]
+
+PLUGIN_DIR = "/lib/wic/plugins" # relative to scripts
+SCRIPTS_PLUGIN_DIR = "scripts" + PLUGIN_DIR
+
+class PluginMgr(object):
+    plugin_dirs = {}
+
+    # make the manager class as singleton
+    _instance = None
+    def __new__(cls, *args, **kwargs):
+        if not cls._instance:
+            cls._instance = super(PluginMgr, cls).__new__(cls, *args, **kwargs)
+
+        return cls._instance
+
+    def __init__(self):
+        wic_path = os.path.dirname(__file__)
+        eos = wic_path.find('scripts') + len('scripts')
+        scripts_path = wic_path[:eos]
+        self.scripts_path = scripts_path
+        self.plugin_dir = scripts_path + PLUGIN_DIR
+        self.layers_path = None
+
+    def _build_plugin_dir_list(self, dl, ptype):
+        if self.layers_path is None:
+            self.layers_path = get_bitbake_var("BBLAYERS")
+        layer_dirs = []
+
+        if self.layers_path is not None:
+            for layer_path in self.layers_path.split():
+                path = os.path.join(layer_path, SCRIPTS_PLUGIN_DIR, ptype)
+                layer_dirs.append(path)
+
+        path = os.path.join(dl, ptype)
+        layer_dirs.append(path)
+
+        return layer_dirs
+
+    def append_dirs(self, dirs):
+        for path in dirs:
+            self._add_plugindir(path)
+
+        # load all the plugins AGAIN
+        self._load_all()
+
+    def _add_plugindir(self, path):
+        path = os.path.abspath(os.path.expanduser(path))
+
+        if not os.path.isdir(path):
+            msger.debug("Plugin dir is not a directory or does not exist: %s"\
+                          % path)
+            return
+
+        if path not in self.plugin_dirs:
+            self.plugin_dirs[path] = False
+            # the value True/False means "loaded"
+
+    def _load_all(self):
+        for (pdir, loaded) in self.plugin_dirs.iteritems():
+            if loaded: continue
+
+            sys.path.insert(0, pdir)
+            for mod in [x[:-3] for x in os.listdir(pdir) if x.endswith(".py")]:
+                if mod and mod != '__init__':
+                    if mod in sys.modules:
+                        #self.plugin_dirs[pdir] = True
+                        msger.warning("Module %s already exists, skip" % mod)
+                    else:
+                        try:
+                            pymod = __import__(mod)
+                            self.plugin_dirs[pdir] = True
+                            msger.debug("Plugin module %s:%s imported"\
+                                        % (mod, pymod.__file__))
+                        except ImportError, err:
+                            msg = 'Failed to load plugin %s/%s: %s' \
+                                % (os.path.basename(pdir), mod, err)
+                            msger.warning(msg)
+
+            del(sys.path[0])
+
+    def get_plugins(self, ptype):
+        """ the return value is dict of name:class pairs """
+
+        if ptype not in PLUGIN_TYPES:
+            raise errors.CreatorError('%s is not valid plugin type' % ptype)
+
+        plugins_dir = self._build_plugin_dir_list(self.plugin_dir, ptype)
+
+        self.append_dirs(plugins_dir)
+
+        return pluginbase.get_plugins(ptype)
+
+    def get_source_plugins(self):
+        """
+        Return list of available source plugins.
+        """
+        plugins_dir = self._build_plugin_dir_list(self.plugin_dir, 'source')
+
+        self.append_dirs(plugins_dir)
+
+        plugins = []
+
+        for _source_name, klass in self.get_plugins('source').iteritems():
+            plugins.append(_source_name)
+
+        return plugins
+
+
+    def get_source_plugin_methods(self, source_name, methods):
+        """
+        The methods param is a dict with the method names to find.  On
+        return, the dict values will be filled in with pointers to the
+        corresponding methods.  If one or more methods are not found,
+        None is returned.
+        """
+        return_methods = None
+        for _source_name, klass in self.get_plugins('source').iteritems():
+            if _source_name == source_name:
+                for _method_name in methods.keys():
+                    if not hasattr(klass, _method_name):
+                        msger.warning("Unimplemented %s source interface for: %s"\
+                                      % (_method_name, _source_name))
+                        return None
+                    func = getattr(klass, _method_name)
+                    methods[_method_name] = func
+                    return_methods = methods
+        return return_methods
+
+pluginmgr = PluginMgr()