1 files changed, 135 insertions, 0 deletions
diff --git a/SCons/Variables/ListVariable.py b/SCons/Variables/ListVariable.py
new file mode 100644
index 0000000..351ffb1
--- /dev/null
+++ b/SCons/Variables/ListVariable.py
@@ -0,0 +1,135 @@
+"""engine.SCons.Variables.ListVariable
+
+This file defines the option type for SCons implementing 'lists'.
+
+A 'list' option may either be 'all', 'none' or a list of names
+separated by comma. After the option has been processed, the option
+value holds either the named list elements, all list elements or no
+list elements at all.
+
+Usage example::
+
+    list_of_libs = Split('x11 gl qt ical')
+
+    opts = Variables()
+    opts.Add(ListVariable('shared',
+                      'libraries to build as shared libraries',
+                      'all',
+                      elems = list_of_libs))
+    ...
+    for lib in list_of_libs:
+     if lib in env['shared']:
+         env.SharedObject(...)
+     else:
+         env.Object(...)
+"""
+
+#
+# __COPYRIGHT__
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
+
+# Known Bug: This should behave like a Set-Type, but does not really,
+# since elements can occur twice.
+
+__all__ = ['ListVariable',]
+
+import collections
+
+import SCons.Util
+
+
+class _ListVariable(collections.UserList):
+    def __init__(self, initlist=[], allowedElems=[]):
+        collections.UserList.__init__(self, [_f for _f in initlist if _f])
+        self.allowedElems = sorted(allowedElems)
+
+    def __cmp__(self, other):
+        raise NotImplementedError
+    def __eq__(self, other):
+        raise NotImplementedError
+    def __ge__(self, other):
+        raise NotImplementedError
+    def __gt__(self, other):
+        raise NotImplementedError
+    def __le__(self, other):
+        raise NotImplementedError
+    def __lt__(self, other):
+        raise NotImplementedError
+    def __str__(self):
+        if len(self) == 0:
+            return 'none'
+        self.data.sort()
+        if self.data == self.allowedElems:
+            return 'all'
+        else:
+            return ','.join(self)
+    def prepare_to_store(self):
+        return self.__str__()
+
+def _converter(val, allowedElems, mapdict):
+    """
+    """
+    if val == 'none':
+        val = []
+    elif val == 'all':
+        val = allowedElems
+    else:
+        val = [_f for _f in val.split(',') if _f]
+        val = [mapdict.get(v, v) for v in val]
+        notAllowed = [v for v in val if v not in allowedElems]
+        if notAllowed:
+            raise ValueError("Invalid value(s) for option: %s" %
+                             ','.join(notAllowed))
+    return _ListVariable(val, allowedElems)
+
+
+## def _validator(key, val, env):
+##     """
+##     """
+##     # todo: write validator for pgk list
+##     return 1
+
+
+def ListVariable(key, help, default, names, map={}):
+    """
+    The input parameters describe a 'package list' option, thus they
+    are returned with the correct converter and validator appended. The
+    result is usable for input to opts.Add() .
+
+    A 'package list' option may either be 'all', 'none' or a list of
+    package names (separated by space).
+    """
+    names_str = 'allowed names: %s' % ' '.join(names)
+    if SCons.Util.is_List(default):
+        default = ','.join(default)
+    help = '\n    '.join(
+        (help, '(all|none|comma-separated list of names)', names_str))
+    return (key, help, default,
+            None, #_validator,
+            lambda val: _converter(val, names, map))
+
+# Local Variables:
+# tab-width:4
+# indent-tabs-mode:nil
+# End:
+# vim: set expandtab tabstop=4 shiftwidth=4: