1 files changed, 110 insertions, 0 deletions
diff --git a/meta/lib/oe/utils.py b/meta/lib/oe/utils.py
new file mode 100644
index 000000000..8912dac3b
--- /dev/null
+++ b/meta/lib/oe/utils.py
@@ -0,0 +1,110 @@
+import bb, bb.data
+
+def read_file(filename):
+    try:
+        f = file( filename, "r" )
+    except IOError, reason:
+        return "" # WARNING: can't raise an error now because of the new RDEPENDS handling. This is a bit ugly. :M:
+    else:
+        return f.read().strip()
+    return None
+
+def ifelse(condition, iftrue = True, iffalse = False):
+    if condition:
+        return iftrue
+    else:
+        return iffalse
+
+def conditional(variable, checkvalue, truevalue, falsevalue, d):
+    if d.getVar(variable,1) == checkvalue:
+        return truevalue
+    else:
+        return falsevalue
+
+def less_or_equal(variable, checkvalue, truevalue, falsevalue, d):
+    if float(d.getVar(variable,1)) <= float(checkvalue):
+        return truevalue
+    else:
+        return falsevalue
+
+def version_less_or_equal(variable, checkvalue, truevalue, falsevalue, d):
+    result = bb.utils.vercmp_string(d.getVar(variable,True), checkvalue)
+    if result <= 0:
+        return truevalue
+    else:
+        return falsevalue
+
+def contains(variable, checkvalues, truevalue, falsevalue, d):
+    val = d.getVar(variable, True)
+    if not val:
+        return falsevalue
+    val = set(val.split())
+    if isinstance(checkvalues, basestring):
+        checkvalues = set(checkvalues.split())
+    else:
+        checkvalues = set(checkvalues)
+    if checkvalues.issubset(val):
+        return truevalue
+    return falsevalue
+
+def both_contain(variable1, variable2, checkvalue, d):
+    if d.getVar(variable1,1).find(checkvalue) != -1 and d.getVar(variable2,1).find(checkvalue) != -1:
+        return checkvalue
+    else:
+        return ""
+
+def prune_suffix(var, suffixes, d):
+    # See if var ends with any of the suffixes listed and 
+    # remove it if found
+    for suffix in suffixes:
+        if var.endswith(suffix):
+            var = var.replace(suffix, "")
+
+    prefix = d.getVar("MLPREFIX", True)
+    if prefix and var.startswith(prefix):
+        var = var.replace(prefix, "")
+
+    return var
+
+def str_filter(f, str, d):
+    from re import match
+    return " ".join(filter(lambda x: match(f, x, 0), str.split()))
+
+def str_filter_out(f, str, d):
+    from re import match
+    return " ".join(filter(lambda x: not match(f, x, 0), str.split()))
+
+def param_bool(cfg, field, dflt = None):
+    """Lookup <field> in <cfg> map and convert it to a boolean; take
+    <dflt> when this <field> does not exist"""
+    value = cfg.get(field, dflt)
+    strvalue = str(value).lower()
+    if strvalue in ('yes', 'y', 'true', 't', '1'):
+        return True
+    elif strvalue in ('no', 'n', 'false', 'f', '0'):
+        return False
+    raise ValueError("invalid value for boolean parameter '%s': '%s'" % (field, value))
+
+def inherits(d, *classes):
+    """Return True if the metadata inherits any of the specified classes"""
+    return any(bb.data.inherits_class(cls, d) for cls in classes)
+
+def distro_features_backfill(d):
+    # This construct allows the addition of new features to DISTRO_FEATURES
+    # that if not present would disable existing functionality, without
+    # disturbing distributions that have already set DISTRO_FEATURES.
+    # Distributions wanting to elide a value in DISTRO_FEATURES_BACKFILL should
+    # add the feature to DISTRO_FEATURES_BACKFILL_CONSIDERED
+
+    backfill = (d.getVar("DISTRO_FEATURES_BACKFILL", True) or "").split()
+    considered = (d.getVar("DISTRO_FEATURES_BACKFILL_CONSIDERED", True) or "").split()
+
+    addfeatures = []
+    for feature in backfill:
+        if feature not in considered:
+            addfeatures.append(feature)
+
+    if addfeatures:
+        return " %s" % (" ".join(addfeatures))
+    else:
+        return ""