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[Xen-devel] [PATCH v4 3/3] Add logic to use V section entry in THE REST for identifying xen trees



Specifically:
* Move check until after the MAINTAINERS file has been read
* Add get_xen_maintainers_file_version() for check
* Remove top_of_tree as not needed any more
* Fail with extended error message when used out of tree

Signed-off-by: Lars Kurth <lars.kurth@xxxxxxxxxx>
---
 scripts/get_maintainer.pl | 57 ++++++++++++++++++++++++----------------
 1 file changed, 35 insertions(+), 22 deletions(-)

diff --git a/scripts/get_maintainer.pl b/scripts/get_maintainer.pl
index 174dfb7..2e661f4 100755
--- a/scripts/get_maintainer.pl
+++ b/scripts/get_maintainer.pl
@@ -265,11 +265,6 @@ if ($email &&
     die "$P: Please select at least 1 email option\n";
 }
 
-if (!top_of_tree($xen_path)) {
-    die "$P: The current directory does not appear to be "
-       . "a Xen source tree.\n";
-}
-
 ## Read MAINTAINERS for type/value pairs
 
 my @typevalue = ();
@@ -311,6 +306,16 @@ while (<$maint>) {
 }
 close($maint);
 
+# Check whether we have a V entry under the REST
+# and use it to get the file's version number
+my $maintainers_file_version = get_xen_maintainers_file_version();
+if (!$maintainers_file_version) {
+    die "$P: the MAINTAINERS file ".
+         "in the current directory does not appear to be from ".
+         "the xen.git source tree or a sister tree.\n\n".
+         "A 'V: xen-maintainers-<version>' entry under THE REST ".
+         "is needed to identify a Xen MAINTAINERS file.\n\n";
+}
 
 #
 # Read mail address map
@@ -564,6 +569,31 @@ sub range_has_maintainer {
     return 0;
 }
 
+sub get_xen_maintainers_file_version {
+    my $tvi = find_first_section();
+
+    while ($tvi < @typevalue) {
+        my $start = find_starting_index($tvi);
+        my $end = find_ending_index($tvi);
+        my $i;
+
+        for ($i = $start; $i < $end; $i++) {
+            my $line = $typevalue[$i];
+            if ($line =~ m/^V:\s*(.*)/) {
+                # Note that get_maintainer_role() requires processing
+                # of more of the file. So do it directly
+                if ($typevalue[$start] eq "THE REST") {
+                    if ($line =~ m/xen-maintainers-(.*)/) {
+                        return $1;
+                    }
+                }
+           }
+        }
+        $tvi = $end + 1;
+    }
+    return 0;
+}
+
 sub get_maintainers {
     %email_hash_name = ();
     %email_hash_address = ();
@@ -867,23 +897,6 @@ Notes:
 EOT
 }
 
-sub top_of_tree {
-    my ($xen_path) = @_;
-
-    if ($xen_path ne "" && substr($xen_path,length($xen_path)-1,1) ne "/") {
-       $xen_path .= "/";
-    }
-    if (    (-f "${xen_path}COPYING")
-        && (-f "${xen_path}MAINTAINERS")
-        && (-f "${xen_path}Makefile")
-        && (-d "${xen_path}docs")
-        && (-f "${xen_path}CODING_STYLE")
-        && (-d "${xen_path}xen")) {
-       return 1;
-    }
-    return 0;
-}
-
 sub parse_email {
     my ($formatted_email) = @_;
 
-- 
git-series 0.9.1

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