Added treeinfo.py module to pylorax.

The treeinfo module replaces maketreeinfo.py and currently
provides a single function called write().

pylorax/__init__.py

@@ -22,9 +22,10 @@
 
 version = (0, 1)
 
-__all__ = ['discinfo']
+__all__ = ['discinfo', 'treeinfo']
 
 import discinfo
+import treeinfo
 
 def show_version(prog):
     """show_version(prog)

pylorax/treeinfo.py

@@ -0,0 +1,93 @@
+#
+# pylorax treeinfo module
+# Install image and tree support data generation tool -- Python module.
+#
+# Copyright (C) 2007, 2008  Red Hat, 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; either version 2 of the License, or
+# (at your option) any later version.
+#
+# 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, see <http://www.gnu.org/licenses/>.
+#
+# Author(s): David Cantrell <dcantrell@redhat.com>
+#            Will Woods <wwoods@redhat.com>
+#
+
+import os
+import time
+import ConfigParser
+
+# Write out the .treeinfo file
+def write(family=None, version=None, arch=None, outdir=None, variant='',
+          discnum=None, totaldiscs=None, packagedir='', allDiscs=True):
+    """write(family=None, version=None, arch=None, outdir=None,
+             [variant='', discnum=None, totaldiscs=None, packagedir=''])
+
+    Write the .treeinfo file to the specified directory (outdir).
+
+    Required parameters:
+        family       String specifying the family.
+        version      String specifying the version number.
+        arch         String specifying the architecture.
+        outdir       Directory to write .treeinfo to (must exist).
+
+    Optional parameters may be specified:
+        variant      Defaults to an empty string, but can be any string.
+        discnum      Defaults to '1', but you can specify an integer.
+        totaldiscs   Defaults to '1', but you can specify an integer.
+        packagedir   Directory where packages are located.
+        allDiscs     Boolean stating all discs are in one tree (default: True)
+
+    Returns True on success, False on failure.
+
+    """
+
+    if family is None or arch is None or outdir is None:
+        return False
+
+    if not os.path.isdir(outdir):
+        return False
+
+    data = { "timestamp": float(time.time()),
+             "family": family,
+             "variant": variant,
+             "version": version,
+             "arch": arch,
+             "discnum": "1",
+             "totaldiscs": "1",
+             "packagedir": packagedir,
+             "outfile": None }
+
+    outfile = "%s/.treeinfo" % (outdir,)
+    section = 'general'
+
+    c = ConfigParser.ConfigParser()
+    c.add_section(section)
+
+    if not allDiscs:
+        if discnum is not None:
+            data["discnum"] = str(discnum)
+
+        if totaldiscs is not None:
+            data["totaldiscs"] = str(totaldiscs)
+
+    try:
+        f = open(outfile, "w")
+
+        for key, value in data.items():
+            c.set(section, key, value)
+
+        c.write(f)
+        f.close()
+    except:
+        return False
+
+    return True