def get_var(self, var, image=None, cache=True):
"""
Get bitbake variable from 'bitbake -e' output or from .env file.
This is a lazy method, i.e. it runs bitbake or parses file only when
only when variable is requested. It also caches results.
"""
if not image:
image = self.default_image
if image not in self:
if image and self.vars_dir:
fname = os.path.join(self.vars_dir, image + '.env')
if os.path.isfile(fname):
# parse .env file
with open(fname) as varsfile:
for line in varsfile:
self._parse_line(line, image)
else:
print("Couldn't get bitbake variable from %s." % fname)
print("File %s doesn't exist." % fname)
return
else:
# Get bitbake -e output
cmd = "bitbake -e"
if image:
cmd += " %s" % image
log_level = msger.get_loglevel()
msger.set_loglevel('normal')
ret, lines = _exec_cmd(cmd)
msger.set_loglevel(log_level)
if ret:
print("Couldn't get '%s' output." % cmd)
print("Bitbake failed with error:\n%s\n" % lines)
return
# Parse bitbake -e output
for line in lines.split('\n'):
self._parse_line(line, image)
# Make first image a default set of variables
if cache:
images = [key for key in self if key]
if len(images) == 1:
self[None] = self[image]
result = self[image].get(var)
if not cache:
self.pop(image, None)
return result
def get_bitbake_var(var, image=None):
"""
Get bitbake variable value lazy way, i.e. run
'bitbake -e' only when variable is requested.
"""
if image not in _BITBAKE_VARS:
# Get bitbake -e output
cmd = "bitbake -e"
if image:
cmd += " %s" % image
log_level = msger.get_loglevel()
msger.set_loglevel('normal')
rc, lines = __exec_cmd(cmd)
msger.set_loglevel(log_level)
if rc:
print "Couldn't get '%s' output." % cmd
print "Bitbake failed with error:\n%s\n" % lines
return
# Parse bitbake -e output
for line in lines.split('\n'):
if "=" not in line:
continue
try:
key, val = line.split("=")
except ValueError:
continue
key = key.strip()
val = val.strip()
if key.replace('_', '').isalnum():
_BITBAKE_VARS[image][key] = val.strip('"')
# Make first image a default set of variables
images = [key for key in _BITBAKE_VARS if key]
if len(images) == 1:
_BITBAKE_VARS[None] = _BITBAKE_VARS[image]
return _BITBAKE_VARS[image].get(var)
def get_bitbake_var(var, image=None):
"""
Get bitbake variable value lazy way, i.e. run
'bitbake -e' only when variable is requested.
"""
if image not in _BITBAKE_VARS:
# Get bitbake -e output
cmd = "bitbake -e"
if image:
cmd += " %s" % image
log_level = msger.get_loglevel()
msger.set_loglevel('normal')
ret, lines = __exec_cmd(cmd)
msger.set_loglevel(log_level)
if ret:
print "Couldn't get '%s' output." % cmd
print "Bitbake failed with error:\n%s\n" % lines
return
# Parse bitbake -e output
for line in lines.split('\n'):
if "=" not in line:
continue
try:
key, val = line.split("=")
except ValueError:
continue
key = key.strip()
val = val.strip()
if key.replace('_', '').isalnum():
_BITBAKE_VARS[image][key] = val.strip('"')
# Make first image a default set of variables
images = [key for key in _BITBAKE_VARS if key]
if len(images) == 1:
_BITBAKE_VARS[None] = _BITBAKE_VARS[image]
return _BITBAKE_VARS[image].get(var)
