Additional python3 changes

Add a 'lower' filter to the templates to replace string.lower which no
longer exists. Fix udev_escape, the strings are already unicode, and
drop --chdir from runcmd. It wasn't ever used, and passing cwd to the
new runcmd isn't supported.

share/efi.tmpl

@@ -1,6 +1,5 @@
 <%page args="configdir, KERNELDIR, efiarch, isolabel"/>
 <%
-from string import lower
 EFIBOOTDIR="EFI/BOOT"
 APPLE_EFI_ICON=inroot+"/usr/share/pixmaps/bootloader/fedora.icns"
 APPLE_EFI_DISKNAME=inroot+"/usr/share/pixmaps/bootloader/fedora-media.vol"

share/live/efi.tmpl

@@ -1,6 +1,5 @@
 <%page args="configdir, KERNELDIR, efiarch, isolabel"/>
 <%
-from string import lower
 EFIBOOTDIR="EFI/BOOT"
 APPLE_EFI_ICON=inroot+"/usr/share/pixmaps/bootloader/fedora.icns"
 APPLE_EFI_DISKNAME=inroot+"/usr/share/pixmaps/bootloader/fedora-media.vol"

src/pylorax/ltmpl.py

@@ -69,9 +69,6 @@ class LoraxTemplate(object):
         # remove comments
         lines = [line for line in lines if not line.startswith("#")]
 
-        # mako template now returns unicode strings
-        lines = [line.encode("utf8") for line in lines]
-
         # split with shlex and perform brace expansion
         lines = [split_and_expand(line) for line in lines]
 
@@ -302,7 +299,7 @@ class LoraxTemplateRunner(object):
             append /etc/resolv.conf ""
         '''
         with open(self._out(filename), "a") as fobj:
-            fobj.write(data.decode('string_escape')+"\n")
+            fobj.write(bytes(data, "utf8").decode('unicode_escape')+"\n")
 
     def treeinfo(self, section, key, *valuetoks):
         '''
@@ -431,10 +428,8 @@ class LoraxTemplateRunner(object):
     # TODO: add ssh-keygen, mkisofs(?), find, and other useful commands
     def runcmd(self, *cmdlist):
         '''
-        runcmd CMD [--chdir=DIR] [ARG ...]
+        runcmd CMD [ARG ...]
           Run the given command with the given arguments.
-          If "--chdir=DIR" is given, change to the named directory
-          before executing the command.
 
           NOTE: All paths given MUST be COMPLETE, ABSOLUTE PATHS to the file
           or files mentioned. ${root}/${inroot}/${outroot} are good for
@@ -451,15 +446,14 @@ class LoraxTemplateRunner(object):
                 remove ${f}
             %endfor
         '''
-        cwd = None
         cmd = cmdlist
         logger.debug('running command: %s', cmd)
         if cmd[0].startswith("--chdir="):
-            cwd = cmd[0].split('=',1)[1]
-            cmd = cmd[1:]
+            logger.error("--chdir is no longer supported for runcmd.")
+            raise ValueError("--chdir is no longer supported for runcmd.")
 
         try:
-            stdout = runcmd_output(cmd, cwd=cwd)
+            stdout = runcmd_output(cmd)
             if stdout:
                 logger.debug('command output:\n%s', stdout)
             logger.debug("command finished successfully")

src/pylorax/treebuilder.py

@@ -193,7 +193,7 @@ class TreeBuilder(object):
                                inroot=inroot, outroot=outroot,
                                basearch=arch.basearch, libdir=arch.libdir,
                                isolabel=isolabel, udev=udev_escape, domacboot=domacboot, doupgrade=doupgrade,
-                               workdir=workdir)
+                               workdir=workdir, lower=string_lower)
         self._runner = LoraxTemplateRunner(inroot, outroot, templatedir=templatedir)
         self._runner.defaults = self.vars
         self.add_templates = add_templates or []
@@ -325,6 +325,15 @@ udev_blacklist=' !"$%&\'()*,/;<>?[\\]^`{|}~' # ASCII printable, minus whitelist
 udev_blacklist += ''.join(chr(i) for i in range(32)) # ASCII non-printable
 def udev_escape(label):
     out = ''
-    for ch in label.decode('utf8'):
+    for ch in label:
         out += ch if ch not in udev_blacklist else '\\x%02x' % ord(ch)
-    return out.encode('utf8')
+    return out
+
+def string_lower(string):
+    """ Return a lowercase string.
+
+    :param string: String to lowercase
+
+    This is used as a filter in the templates.
+    """
+    return string.lower()

src/pylorax/treeinfo.py

@@ -34,7 +34,7 @@ class TreeInfo(object):
         self.c = configparser.ConfigParser()
 
         section = "general"
-        data = {"timestamp": time.time(),
+        data = {"timestamp": str(time.time()),
                 "family": product,
                 "version": version,
                 "name": "%s-%s" % (product, version),