[PATCH] fetch/wget: Start to clean up command construction

[Richard Purdie <richard.purdie@linuxfoundation.org>]

Start to clean up wget fetcher command construction to allow clearer
and more extensible code structure. Drops support for ${URI} and
${FILE} directly in the commands.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
---
diff --git a/bitbake/lib/bb/fetch2/wget.py b/bitbake/lib/bb/fetch2/wget.py
index e2f99ce..bb686b5 100644
--- a/bitbake/lib/bb/fetch2/wget.py
+++ b/bitbake/lib/bb/fetch2/wget.py
@@ -58,28 +58,27 @@ class Wget(FetchMethod):
 
         ud.localfile = data.expand(urllib.unquote(ud.basename), d)
 
+        self.basecmd = d.getVar("FETCHCMD_wget", True) or "/usr/bin/env wget -t 2 -T 30 -nv --passive-ftp --no-check-certificate"
+
     def download(self, ud, d, checkonly = False):
         """Fetch urls"""
 
-        basecmd = d.getVar("FETCHCMD_wget", True) or "/usr/bin/env wget -t 2 -T 30 -nv --passive-ftp --no-check-certificate"
+        fetchcmd = self.basecmd
 
         if not checkonly and 'downloadfilename' in ud.parm:
             dldir = d.getVar("DL_DIR", True)
             bb.utils.mkdirhier(os.path.dirname(dldir + os.sep + ud.localfile))
-            basecmd += " -O " + dldir + os.sep + ud.localfile
+            fetchcmd += " -O " + dldir + os.sep + ud.localfile
 
+        uri = ud.url.split(";")[0]
         if checkonly:
-            fetchcmd = d.expand(basecmd + " --spider '${URI}'")
+            fetchcmd = self.basecmd + " --spider '%s'" % uri
         elif os.path.exists(ud.localpath):
             # file exists, but we didnt complete it.. trying again..
-            fetchcmd = d.expand(basecmd + " -c -P ${DL_DIR} '${URI}'")
+            fetchcmd = self.basecmd + d.expand(" -c -P ${DL_DIR} '%s'" % uri)
         else:
-            fetchcmd = d.expand(basecmd + " -P ${DL_DIR} '${URI}'")
-
-        uri = ud.url.split(";")[0]
+            fetchcmd = self.basecmd + d.expand(" -P ${DL_DIR} '%s'" % uri)
 
-        fetchcmd = fetchcmd.replace("${URI}", uri.split(";")[0])
-        fetchcmd = fetchcmd.replace("${FILE}", ud.basename)
         if not checkonly:
             logger.info("fetch " + uri)
             logger.debug(2, "executing " + fetchcmd)