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# Emit the datastore to a file, and if it was previously emitted, display the
# differences to the user.
EMIT_DIR = "${TMPDIR}/emit-data"
EMIT_BLACKLIST += "BUILDSTART DATE TIME DATETIME \
__* _ PWD \
DISPLAY XDG_SESSION_COOKIE \
SSH_AUTH_SOCK SSH_TTY SSH_CLIENT SSH_CONNECTION \
SESSION_MANAGER DESKTOP_SESSION COLORTERM TERM \
XAUTHORITY GTK_RC_FILES DBUS_SESSION_BUS_ADDRESS \
GREP_OPTIONS \
GNOME_KEYRING GNOME_KEYRING_PID"
def diff_datadict(d, old_data, data):
from itertools import chain
from difflib import Differ
from fnmatch import fnmatchcase
blacklist = d.getVar("EMIT_BLACKLIST", True).split()
keys = sorted(set(chain(old_data.iterkeys(), data.iterkeys())))
keys = [key for key in keys
if not any(fnmatchcase(key, pat) for pat in blacklist)]
old = ["%s: %s\n" % (key, old_data.get(key)) for key in keys]
new = ["%s: %s\n" % (key, data.get(key)) for key in keys]
return Differ().compare(old, new)
python do_emit_data () {
import pickle
data = dict((key, repr(d.getVar(key, False))) for key in d.keys())
outfile = os.path.join(d.getVar("EMIT_DIR", True), d.getVar("PF", True))
bb.mkdirhier(os.path.dirname(outfile))
if os.path.exists(outfile):
f = open(outfile, "rb")
old_data = pickle.load(f)
f.close()
diff = diff_datadict(d, old_data, data)
differences = [line for line in diff if not line.startswith(" ")]
if differences:
bb.note(bb.data.expand("${PF}: data has changed:", d))
for line in differences:
bb.note(line.rstrip())
pickle.dump(data, open(outfile, "wb"))
}
do_emit_data[nostamp] = "1"
addtask emit_data
do_emit_data_all[recrdeptask] = "do_emit_data"
do_emit_data_all[nostamp] = "1"
addtask emit_data_all after do_emit_data
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