backports: add backport version parsing for kernel integration

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>

diff --git a/gentree.py b/gentree.py
index afa49673fb69c91449ce95648a91ec6db5995f72..3e130f10f4ce56156b695fefa915af8a68802562 100755 (executable)
--- a/gentree.py
+++ b/gentree.py
@@ -861,6 +861,24 @@ def process(kerneldir, 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, "add versions files")
+    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(bpid.target_dir, '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(bpid.target_dir, 'Kconfig'), 'w')
+        outf.write(out)
+        outf.close()
+        git_debug_snapshot(args, "modify top level backports/Kconfig with backports identity")
 
     if disable_list:
         # No need to verify_sources() as compat's Kconfig has no 'source' call