package: Move get_conffiles/files_from_filevars functions to lib

To avoid reparsing the bbclass code all the time, move the functions
to the python function library code which is more efficient.

(From OE-Core rev: 424e65627c018b3119050f515b0c7cfb43be5573)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes-global/package.bbclass

@@ -257,82 +257,6 @@ python () {
         d.appendVarFlag('do_package', 'deptask', " do_packagedata")
 }
 
-# Get a list of files from file vars by searching files under current working directory
-# The list contains symlinks, directories and normal files.
-def files_from_filevars(filevars):
-    import os,glob
-    cpath = oe.cachedpath.CachedPath()
-    files = []
-    for f in filevars:
-        if os.path.isabs(f):
-            f = '.' + f
-        if not f.startswith("./"):
-            f = './' + f
-        globbed = glob.glob(f)
-        if globbed:
-            if [ f ] != globbed:
-                files += globbed
-                continue
-        files.append(f)
-
-    symlink_paths = []
-    for ind, f in enumerate(files):
-        # Handle directory symlinks. Truncate path to the lowest level symlink
-        parent = ''
-        for dirname in f.split('/')[:-1]:
-            parent = os.path.join(parent, dirname)
-            if dirname == '.':
-                continue
-            if cpath.islink(parent):
-                bb.warn("FILES contains file '%s' which resides under a "
-                        "directory symlink. Please fix the recipe and use the "
-                        "real path for the file." % f[1:])
-                symlink_paths.append(f)
-                files[ind] = parent
-                f = parent
-                break
-
-        if not cpath.islink(f):
-            if cpath.isdir(f):
-                newfiles = [ os.path.join(f,x) for x in os.listdir(f) ]
-                if newfiles:
-                    files += newfiles
-
-    return files, symlink_paths
-
-# Called in package_<rpm,ipk,deb>.bbclass to get the correct list of configuration files
-def get_conffiles(pkg, d):
-    pkgdest = d.getVar('PKGDEST')
-    root = os.path.join(pkgdest, pkg)
-    cwd = os.getcwd()
-    os.chdir(root)
-
-    conffiles = d.getVar('CONFFILES:%s' % pkg);
-    if conffiles == None:
-        conffiles = d.getVar('CONFFILES')
-    if conffiles == None:
-        conffiles = ""
-    conffiles = conffiles.split()
-    conf_orig_list = files_from_filevars(conffiles)[0]
-
-    # Remove links and directories from conf_orig_list to get conf_list which only contains normal files
-    conf_list = []
-    for f in conf_orig_list:
-        if os.path.isdir(f):
-            continue
-        if os.path.islink(f):
-            continue
-        if not os.path.exists(f):
-            continue
-        conf_list.append(f)
-
-    # Remove the leading './'
-    for i in range(0, len(conf_list)):
-        conf_list[i] = conf_list[i][1:]
-
-    os.chdir(cwd)
-    return conf_list
-
 def checkbuildpath(file, d):
     tmpdir = d.getVar('TMPDIR')
     with open(file) as f:
@@ -1209,7 +1133,7 @@ python populate_packages () {
             filesvar.replace("//", "/")
 
         origfiles = filesvar.split()
-        files, symlink_paths = files_from_filevars(origfiles)
+        files, symlink_paths = oe.package.files_from_filevars(origfiles)
 
         if autodebug and pkg.endswith("-dbg"):
             files.extend(debug)