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authorPaul Eggleton <paul.eggleton@linux.intel.com>2014-12-19 10:20:30 +0000
committerRichard Purdie <richard.purdie@linuxfoundation.org>2014-12-23 10:18:20 +0000
commitb1e5a6794f1631a82c57fad0724ddf5fb9639652 (patch)
treec38ca6997be6ea82ca4ddbc05e00b118d3cc9e82 /bitbake/lib/bb
parent7b70d5e8a481a7485a3866623efce993ddd9b607 (diff)
downloadpoky-b1e5a6794f1631a82c57fad0724ddf5fb9639652.tar.gz
bitbake: utils: add basic metadata manipulation functions
* Add a generic edit_metadata_file() function to modify variable assignments in any metadata file (conf, bb, bbappend) using a callback for flexibility * Add a specific edit_bblayers_conf() function to modify conf/bblayers.conf and add and/or remove layers from the BBLAYERS value within it. (Bitbake rev: aa03a28b442549dd8ffe92ae4d6390f62202a76a) Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'bitbake/lib/bb')
-rw-r--r--bitbake/lib/bb/utils.py127
1 files changed, 127 insertions, 0 deletions
diff --git a/bitbake/lib/bb/utils.py b/bitbake/lib/bb/utils.py
index d7c5067613..f26349f4a9 100644
--- a/bitbake/lib/bb/utils.py
+++ b/bitbake/lib/bb/utils.py
@@ -915,3 +915,130 @@ def exec_flat_python_func(func, *args, **kwargs):
915 comp = bb.utils.better_compile(code, '<string>', '<string>') 915 comp = bb.utils.better_compile(code, '<string>', '<string>')
916 bb.utils.better_exec(comp, context, code, '<string>') 916 bb.utils.better_exec(comp, context, code, '<string>')
917 return context['retval'] 917 return context['retval']
918
919def edit_metadata_file(meta_file, variables, func):
920 """Edit a recipe or config file and modify one or more specified
921 variable values set in the file using a specified callback function.
922 The file is only written to if the value(s) actually change.
923 """
924 var_res = {}
925 for var in variables:
926 var_res[var] = re.compile(r'^%s[ \t]*[?=]+' % var)
927
928 updated = False
929 varset_start = ''
930 newlines = []
931 in_var = None
932 full_value = ''
933
934 def handle_var_end():
935 (newvalue, indent, minbreak) = func(in_var, full_value)
936 if newvalue != full_value:
937 if isinstance(newvalue, list):
938 intentspc = ' ' * indent
939 if minbreak:
940 # First item on first line
941 if len(newvalue) == 1:
942 newlines.append('%s "%s"\n' % (varset_start, newvalue[0]))
943 else:
944 newlines.append('%s "%s\\\n' % (varset_start, newvalue[0]))
945 for item in newvalue[1:]:
946 newlines.append('%s%s \\\n' % (intentspc, item))
947 newlines.append('%s"\n' % indentspc)
948 else:
949 # No item on first line
950 newlines.append('%s " \\\n' % varset_start)
951 for item in newvalue:
952 newlines.append('%s%s \\\n' % (intentspc, item))
953 newlines.append('%s"\n' % intentspc)
954 else:
955 newlines.append('%s "%s"\n' % (varset_start, newvalue))
956 return True
957 return False
958
959 with open(meta_file, 'r') as f:
960 for line in f:
961 if in_var:
962 value = line.rstrip()
963 full_value += value[:-1]
964 if value.endswith('"') or value.endswith("'"):
965 if handle_var_end():
966 updated = True
967 in_var = None
968 else:
969 matched = False
970 for (varname, var_re) in var_res.iteritems():
971 if var_re.match(line):
972 splitvalue = line.split('"', 1)
973 varset_start = splitvalue[0].rstrip()
974 value = splitvalue[1].rstrip()
975 if value.endswith('\\'):
976 value = value[:-1]
977 full_value = value
978 if value.endswith('"') or value.endswith("'"):
979 if handle_var_end():
980 updated = True
981 else:
982 in_var = varname
983 matched = True
984 break
985 if not matched:
986 newlines.append(line)
987 if updated:
988 with open(meta_file, 'w') as f:
989 f.writelines(newlines)
990
991def edit_bblayers_conf(bblayers_conf, add, remove):
992 """Edit bblayers.conf, adding and/or removing layers"""
993
994 import fnmatch
995
996 def remove_trailing_sep(pth):
997 if pth and pth[-1] == os.sep:
998 pth = pth[:-1]
999 return pth
1000
1001 def layerlist_param(value):
1002 if not value:
1003 return []
1004 elif isinstance(value, list):
1005 return [remove_trailing_sep(x) for x in value]
1006 else:
1007 return [remove_trailing_sep(value)]
1008
1009 notadded = []
1010 notremoved = []
1011
1012 addlayers = layerlist_param(add)
1013 removelayers = layerlist_param(remove)
1014
1015 def handle_bblayers(varname, origvalue):
1016 updated = False
1017 bblayers = [remove_trailing_sep(x) for x in origvalue.split()]
1018 if removelayers:
1019 for removelayer in removelayers:
1020 matched = False
1021 for layer in bblayers:
1022 if fnmatch.fnmatch(layer, removelayer):
1023 updated = True
1024 matched = True
1025 bblayers.remove(layer)
1026 break
1027 if not matched:
1028 notremoved.append(removelayer)
1029 if addlayers:
1030 for addlayer in addlayers:
1031 if addlayer not in bblayers:
1032 updated = True
1033 bblayers.append(addlayer)
1034 else:
1035 notadded.append(addlayer)
1036
1037 if updated:
1038 return (bblayers, 2, False)
1039 else:
1040 return (origvalue, 2, False)
1041
1042 edit_metadata_file(bblayers_conf, ['BBLAYERS'], handle_bblayers)
1043 return (notadded, notremoved)
1044