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-rw-r--r--scripts/lib/wic/ksparser.py17
1 files changed, 17 insertions, 0 deletions
diff --git a/scripts/lib/wic/ksparser.py b/scripts/lib/wic/ksparser.py
index 7e5a9c5092..08baf76123 100644
--- a/scripts/lib/wic/ksparser.py
+++ b/scripts/lib/wic/ksparser.py
@@ -28,14 +28,30 @@
import os
import shlex
import logging
+import re
from argparse import ArgumentParser, ArgumentError, ArgumentTypeError
from wic.engine import find_canned
from wic.partition import Partition
+from wic.misc import get_bitbake_var
logger = logging.getLogger('wic')
+__expand_var_regexp__ = re.compile(r"\${[^{}@\n\t :]+}")
+
+def expand_line(line):
+ while True:
+ m = __expand_var_regexp__.search(line)
+ if not m:
+ return line
+ key = m.group()[2:-1]
+ val = get_bitbake_var(key)
+ if val is None:
+ logger.warning("cannot expand variable %s" % key)
+ return line
+ line = line[:m.start()] + val + line[m.end():]
+
class KickStartError(Exception):
"""Custom exception."""
pass
@@ -190,6 +206,7 @@ class KickStart():
line = line.strip()
lineno += 1
if line and line[0] != '#':
+ line = expand_line(line)
try:
line_args = shlex.split(line)
parsed = parser.parse_args(line_args)