[PATCH v2 10/13] backports: add backport version parsing for kernel integration

["Luis R. Rodriguez" <mcgrof@do-not-panic.com>]

From: "Luis R. Rodriguez" <mcgrof@suse.com>

The way we'll define backports versioning information for
kernel integration is slightly different, we'll rely completely
on Kconfig for the job, but in the end share the same C code
defines.

Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com>
---
 gentree.py | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/gentree.py b/gentree.py
index 1b6dc89..55abe6d 100755
--- a/gentree.py
+++ b/gentree.py
@@ -807,6 +807,24 @@ def process(kerneldir, outdir, copy_list_file, git_revision=None,
             f.write('BACKPORTS_GIT_TRACKED="backport tracker ID: $(shell git rev-parse HEAD 2>/dev/null || echo \'not built in git tree\')"\n')
         f.close()
         git_debug_snapshot(args, "generate kernel version info file: version")
+    else:
+        kconf_regexes = [
+                (re.compile(r'.*(?P<key>%%BACKPORT_DIR%%)'), '%%BACKPORT_DIR%%', 'backports/'),
+                (re.compile(r'.*(?P<key>%%BACKPORTS_VERSION%%).*'), '%%BACKPORTS_VERSION%%', backports_version),
+                (re.compile(r'.*(?P<key>%%BACKPORTED_KERNEL_VERSION%%).*'), '%%BACKPORTED_KERNEL_VERSION%%', kernel_version),
+                (re.compile(r'.*(?P<key>%%BACKPORTED_KERNEL_NAME%%).*'), '%%BACKPORTED_KERNEL_NAME%%', args.base_name),
+        ]
+        out = ''
+        for l in open(os.path.join(args.outdir, 'Kconfig'), 'r'):
+            for r in kconf_regexes:
+                m = r[0].match(l)
+                if m:
+                    l = re.sub(r'(' + r[1] + ')', r'' + r[2] + '', l)
+            out += l
+        outf = open(os.path.join(args.outdir, 'Kconfig'), 'w')
+        outf.write(out)
+        outf.close()
+        git_debug_snapshot(args, "modify top level backports/Kconfig with backports identity")
 
     disable_list = add_automatic_backports(args, bp_prefix)
     if disable_list:
-- 
2.1.1