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authorLuca Falavigna <dktrkranz@debian.org>2010-01-02 20:31:28 +0100
committerLuca Falavigna <dktrkranz@debian.org>2010-01-02 20:31:28 +0100
commitd4ced36437871acd01f2ed12b1899d1969b5492f (patch)
tree25ca9dae17a0b768409dce20de86749ec157e0f5 /engine/SCons/Variables
parenta26d8475c55ab30f5940ba815235e6bb0036a6de (diff)
parent9b73d2781acfc322319eb5c59b30f2dfa0fea977 (diff)
Merge commit 'upstream/1.2.0.d20091224'
Diffstat (limited to 'engine/SCons/Variables')
-rw-r--r--engine/SCons/Variables/BoolVariable.py91
-rw-r--r--engine/SCons/Variables/EnumVariable.py107
-rw-r--r--engine/SCons/Variables/ListVariable.py139
-rw-r--r--engine/SCons/Variables/PackageVariable.py109
-rw-r--r--engine/SCons/Variables/PathVariable.py147
-rw-r--r--engine/SCons/Variables/__init__.py317
6 files changed, 910 insertions, 0 deletions
diff --git a/engine/SCons/Variables/BoolVariable.py b/engine/SCons/Variables/BoolVariable.py
new file mode 100644
index 0000000..19e52bf
--- /dev/null
+++ b/engine/SCons/Variables/BoolVariable.py
@@ -0,0 +1,91 @@
+"""engine.SCons.Variables.BoolVariable
+
+This file defines the option type for SCons implementing true/false values.
+
+Usage example:
+
+ opts = Variables()
+ opts.Add(BoolVariable('embedded', 'build for an embedded system', 0))
+ ...
+ if env['embedded'] == 1:
+ ...
+"""
+
+#
+# Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 The SCons Foundation
+#
+# 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__ = "src/engine/SCons/Variables/BoolVariable.py 4577 2009/12/27 19:43:56 scons"
+
+__all__ = ['BoolVariable',]
+
+import string
+
+import SCons.Errors
+
+__true_strings = ('y', 'yes', 'true', 't', '1', 'on' , 'all' )
+__false_strings = ('n', 'no', 'false', 'f', '0', 'off', 'none')
+
+
+def _text2bool(val):
+ """
+ Converts strings to True/False depending on the 'truth' expressed by
+ the string. If the string can't be converted, the original value
+ will be returned.
+
+ See '__true_strings' and '__false_strings' for values considered
+ 'true' or 'false respectivly.
+
+ This is usable as 'converter' for SCons' Variables.
+ """
+ lval = string.lower(val)
+ if lval in __true_strings: return True
+ if lval in __false_strings: return False
+ raise ValueError("Invalid value for boolean option: %s" % val)
+
+
+def _validator(key, val, env):
+ """
+ Validates the given value to be either '0' or '1'.
+
+ This is usable as 'validator' for SCons' Variables.
+ """
+ if not env[key] in (True, False):
+ raise SCons.Errors.UserError(
+ 'Invalid value for boolean option %s: %s' % (key, env[key]))
+
+
+def BoolVariable(key, help, default):
+ """
+ The input parameters describe a boolen option, thus they are
+ returned with the correct converter and validator appended. The
+ 'help' text will by appended by '(yes|no) to show the valid
+ valued. The result is usable for input to opts.Add().
+ """
+ return (key, '%s (yes|no)' % help, default,
+ _validator, _text2bool)
+
+# Local Variables:
+# tab-width:4
+# indent-tabs-mode:nil
+# End:
+# vim: set expandtab tabstop=4 shiftwidth=4:
diff --git a/engine/SCons/Variables/EnumVariable.py b/engine/SCons/Variables/EnumVariable.py
new file mode 100644
index 0000000..0a01772
--- /dev/null
+++ b/engine/SCons/Variables/EnumVariable.py
@@ -0,0 +1,107 @@
+"""engine.SCons.Variables.EnumVariable
+
+This file defines the option type for SCons allowing only specified
+input-values.
+
+Usage example:
+
+ opts = Variables()
+ opts.Add(EnumVariable('debug', 'debug output and symbols', 'no',
+ allowed_values=('yes', 'no', 'full'),
+ map={}, ignorecase=2))
+ ...
+ if env['debug'] == 'full':
+ ...
+"""
+
+#
+# Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 The SCons Foundation
+#
+# 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__ = "src/engine/SCons/Variables/EnumVariable.py 4577 2009/12/27 19:43:56 scons"
+
+__all__ = ['EnumVariable',]
+
+import string
+
+import SCons.Errors
+
+def _validator(key, val, env, vals):
+ if not val in vals:
+ raise SCons.Errors.UserError(
+ 'Invalid value for option %s: %s' % (key, val))
+
+
+def EnumVariable(key, help, default, allowed_values, map={}, ignorecase=0):
+ """
+ The input parameters describe a option with only certain values
+ allowed. They are returned with an appropriate converter and
+ validator appended. The result is usable for input to
+ Variables.Add().
+
+ 'key' and 'default' are the values to be passed on to Variables.Add().
+
+ 'help' will be appended by the allowed values automatically
+
+ 'allowed_values' is a list of strings, which are allowed as values
+ for this option.
+
+ The 'map'-dictionary may be used for converting the input value
+ into canonical values (eg. for aliases).
+
+ 'ignorecase' defines the behaviour of the validator:
+
+ If ignorecase == 0, the validator/converter are case-sensitive.
+ If ignorecase == 1, the validator/converter are case-insensitive.
+ If ignorecase == 2, the validator/converter is case-insensitive and
+ the converted value will always be lower-case.
+
+ The 'validator' tests whether the value is in the list of allowed
+ values. The 'converter' converts input values according to the
+ given 'map'-dictionary (unmapped input values are returned
+ unchanged).
+ """
+ help = '%s (%s)' % (help, string.join(allowed_values, '|'))
+ # define validator
+ if ignorecase >= 1:
+ validator = lambda key, val, env, vals=allowed_values: \
+ _validator(key, string.lower(val), env, vals)
+ else:
+ validator = lambda key, val, env, vals=allowed_values: \
+ _validator(key, val, env, vals)
+ # define converter
+ if ignorecase == 2:
+ converter = lambda val, map=map: \
+ string.lower(map.get(string.lower(val), val))
+ elif ignorecase == 1:
+ converter = lambda val, map=map: \
+ map.get(string.lower(val), val)
+ else:
+ converter = lambda val, map=map: \
+ map.get(val, val)
+ return (key, help, default, validator, converter)
+
+# Local Variables:
+# tab-width:4
+# indent-tabs-mode:nil
+# End:
+# vim: set expandtab tabstop=4 shiftwidth=4:
diff --git a/engine/SCons/Variables/ListVariable.py b/engine/SCons/Variables/ListVariable.py
new file mode 100644
index 0000000..4eab726
--- /dev/null
+++ b/engine/SCons/Variables/ListVariable.py
@@ -0,0 +1,139 @@
+"""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 elemens 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 (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 The SCons Foundation
+#
+# 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__ = "src/engine/SCons/Variables/ListVariable.py 4577 2009/12/27 19:43:56 scons"
+
+# Know Bug: This should behave like a Set-Type, but does not really,
+# since elements can occur twice.
+
+__all__ = ['ListVariable',]
+
+import string
+import UserList
+
+import SCons.Util
+
+
+class _ListVariable(UserList.UserList):
+ def __init__(self, initlist=[], allowedElems=[]):
+ UserList.UserList.__init__(self, filter(None, initlist))
+ self.allowedElems = allowedElems[:]
+ self.allowedElems.sort()
+
+ 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 string.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 = filter(None, string.split(val, ','))
+ val = map(lambda v, m=mapdict: m.get(v, v), val)
+ notAllowed = filter(lambda v, aE=allowedElems: not v in aE, val)
+ if notAllowed:
+ raise ValueError("Invalid value(s) for option: %s" %
+ string.join(notAllowed, ','))
+ return _ListVariable(val, allowedElems)
+
+
+## def _validator(key, val, env):
+## """
+## """
+## # todo: write validater 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 validater 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' % string.join(names, ' ')
+ if SCons.Util.is_List(default):
+ default = string.join(default, ',')
+ help = string.join(
+ (help, '(all|none|comma-separated list of names)', names_str),
+ '\n ')
+ return (key, help, default,
+ None, #_validator,
+ lambda val, elems=names, m=map: _converter(val, elems, m))
+
+# Local Variables:
+# tab-width:4
+# indent-tabs-mode:nil
+# End:
+# vim: set expandtab tabstop=4 shiftwidth=4:
diff --git a/engine/SCons/Variables/PackageVariable.py b/engine/SCons/Variables/PackageVariable.py
new file mode 100644
index 0000000..ef46f66
--- /dev/null
+++ b/engine/SCons/Variables/PackageVariable.py
@@ -0,0 +1,109 @@
+"""engine.SCons.Variables.PackageVariable
+
+This file defines the option type for SCons implementing 'package
+activation'.
+
+To be used whenever a 'package' may be enabled/disabled and the
+package path may be specified.
+
+Usage example:
+
+ Examples:
+ x11=no (disables X11 support)
+ x11=yes (will search for the package installation dir)
+ x11=/usr/local/X11 (will check this path for existance)
+
+ To replace autoconf's --with-xxx=yyy
+
+ opts = Variables()
+ opts.Add(PackageVariable('x11',
+ 'use X11 installed here (yes = search some places',
+ 'yes'))
+ ...
+ if env['x11'] == True:
+ dir = ... search X11 in some standard places ...
+ env['x11'] = dir
+ if env['x11']:
+ ... build with x11 ...
+"""
+
+#
+# Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 The SCons Foundation
+#
+# 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__ = "src/engine/SCons/Variables/PackageVariable.py 4577 2009/12/27 19:43:56 scons"
+
+__all__ = ['PackageVariable',]
+
+import string
+
+import SCons.Errors
+
+__enable_strings = ('1', 'yes', 'true', 'on', 'enable', 'search')
+__disable_strings = ('0', 'no', 'false', 'off', 'disable')
+
+def _converter(val):
+ """
+ """
+ lval = string.lower(val)
+ if lval in __enable_strings: return True
+ if lval in __disable_strings: return False
+ #raise ValueError("Invalid value for boolean option: %s" % val)
+ return val
+
+
+def _validator(key, val, env, searchfunc):
+ # NB: searchfunc is currenty undocumented and unsupported
+ """
+ """
+ # todo: write validator, check for path
+ import os
+ if env[key] is True:
+ if searchfunc:
+ env[key] = searchfunc(key, val)
+ elif env[key] and not os.path.exists(val):
+ raise SCons.Errors.UserError(
+ 'Path does not exist for option %s: %s' % (key, val))
+
+
+def PackageVariable(key, help, default, searchfunc=None):
+ # NB: searchfunc is currenty undocumented and unsupported
+ """
+ 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 (seperated by space).
+ """
+ help = string.join(
+ (help, '( yes | no | /path/to/%s )' % key),
+ '\n ')
+ return (key, help, default,
+ lambda k, v, e, f=searchfunc: _validator(k,v,e,f),
+ _converter)
+
+# Local Variables:
+# tab-width:4
+# indent-tabs-mode:nil
+# End:
+# vim: set expandtab tabstop=4 shiftwidth=4:
diff --git a/engine/SCons/Variables/PathVariable.py b/engine/SCons/Variables/PathVariable.py
new file mode 100644
index 0000000..bbfffdf
--- /dev/null
+++ b/engine/SCons/Variables/PathVariable.py
@@ -0,0 +1,147 @@
+"""SCons.Variables.PathVariable
+
+This file defines an option type for SCons implementing path settings.
+
+To be used whenever a a user-specified path override should be allowed.
+
+Arguments to PathVariable are:
+ option-name = name of this option on the command line (e.g. "prefix")
+ option-help = help string for option
+ option-dflt = default value for this option
+ validator = [optional] validator for option value. Predefined
+ validators are:
+
+ PathAccept -- accepts any path setting; no validation
+ PathIsDir -- path must be an existing directory
+ PathIsDirCreate -- path must be a dir; will create
+ PathIsFile -- path must be a file
+ PathExists -- path must exist (any type) [default]
+
+ The validator is a function that is called and which
+ should return True or False to indicate if the path
+ is valid. The arguments to the validator function
+ are: (key, val, env). The key is the name of the
+ option, the val is the path specified for the option,
+ and the env is the env to which the Otions have been
+ added.
+
+Usage example:
+
+ Examples:
+ prefix=/usr/local
+
+ opts = Variables()
+
+ opts = Variables()
+ opts.Add(PathVariable('qtdir',
+ 'where the root of Qt is installed',
+ qtdir, PathIsDir))
+ opts.Add(PathVariable('qt_includes',
+ 'where the Qt includes are installed',
+ '$qtdir/includes', PathIsDirCreate))
+ opts.Add(PathVariable('qt_libraries',
+ 'where the Qt library is installed',
+ '$qtdir/lib'))
+
+"""
+
+#
+# Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 The SCons Foundation
+#
+# 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__ = "src/engine/SCons/Variables/PathVariable.py 4577 2009/12/27 19:43:56 scons"
+
+__all__ = ['PathVariable',]
+
+import os
+import os.path
+
+import SCons.Errors
+
+class _PathVariableClass:
+
+ def PathAccept(self, key, val, env):
+ """Accepts any path, no checking done."""
+ pass
+
+ def PathIsDir(self, key, val, env):
+ """Validator to check if Path is a directory."""
+ if not os.path.isdir(val):
+ if os.path.isfile(val):
+ m = 'Directory path for option %s is a file: %s'
+ else:
+ m = 'Directory path for option %s does not exist: %s'
+ raise SCons.Errors.UserError(m % (key, val))
+
+ def PathIsDirCreate(self, key, val, env):
+ """Validator to check if Path is a directory,
+ creating it if it does not exist."""
+ if os.path.isfile(val):
+ m = 'Path for option %s is a file, not a directory: %s'
+ raise SCons.Errors.UserError(m % (key, val))
+ if not os.path.isdir(val):
+ os.makedirs(val)
+
+ def PathIsFile(self, key, val, env):
+ """validator to check if Path is a file"""
+ if not os.path.isfile(val):
+ if os.path.isdir(val):
+ m = 'File path for option %s is a directory: %s'
+ else:
+ m = 'File path for option %s does not exist: %s'
+ raise SCons.Errors.UserError(m % (key, val))
+
+ def PathExists(self, key, val, env):
+ """validator to check if Path exists"""
+ if not os.path.exists(val):
+ m = 'Path for option %s does not exist: %s'
+ raise SCons.Errors.UserError(m % (key, val))
+
+ def __call__(self, key, help, default, validator=None):
+ # NB: searchfunc is currenty undocumented and unsupported
+ """
+ The input parameters describe a 'path list' option, thus they
+ are returned with the correct converter and validator appended. The
+ result is usable for input to opts.Add() .
+
+ The 'default' option specifies the default path to use if the
+ user does not specify an override with this option.
+
+ validator is a validator, see this file for examples
+ """
+ if validator is None:
+ validator = self.PathExists
+
+ if SCons.Util.is_List(key) or SCons.Util.is_Tuple(key):
+ return (key, '%s ( /path/to/%s )' % (help, key[0]), default,
+ validator, None)
+ else:
+ return (key, '%s ( /path/to/%s )' % (help, key), default,
+ validator, None)
+
+PathVariable = _PathVariableClass()
+
+# Local Variables:
+# tab-width:4
+# indent-tabs-mode:nil
+# End:
+# vim: set expandtab tabstop=4 shiftwidth=4:
diff --git a/engine/SCons/Variables/__init__.py b/engine/SCons/Variables/__init__.py
new file mode 100644
index 0000000..e4eba6c
--- /dev/null
+++ b/engine/SCons/Variables/__init__.py
@@ -0,0 +1,317 @@
+"""engine.SCons.Variables
+
+This file defines the Variables class that is used to add user-friendly
+customizable variables to an SCons build.
+"""
+
+#
+# Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 The SCons Foundation
+#
+# 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__ = "src/engine/SCons/Variables/__init__.py 4577 2009/12/27 19:43:56 scons"
+
+import os.path
+import string
+import sys
+
+import SCons.Environment
+import SCons.Errors
+import SCons.Util
+import SCons.Warnings
+
+from BoolVariable import BoolVariable # okay
+from EnumVariable import EnumVariable # okay
+from ListVariable import ListVariable # naja
+from PackageVariable import PackageVariable # naja
+from PathVariable import PathVariable # okay
+
+
+class Variables:
+ instance=None
+
+ """
+ Holds all the options, updates the environment with the variables,
+ and renders the help text.
+ """
+ def __init__(self, files=[], args={}, is_global=1):
+ """
+ files - [optional] List of option configuration files to load
+ (backward compatibility) If a single string is passed it is
+ automatically placed in a file list
+ """
+ self.options = []
+ self.args = args
+ if not SCons.Util.is_List(files):
+ if files:
+ files = [ files ]
+ else:
+ files = []
+ self.files = files
+ self.unknown = {}
+
+ # create the singleton instance
+ if is_global:
+ self=Variables.instance
+
+ if not Variables.instance:
+ Variables.instance=self
+
+ def _do_add(self, key, help="", default=None, validator=None, converter=None):
+ class Variable:
+ pass
+
+ option = Variable()
+
+ # if we get a list or a tuple, we take the first element as the
+ # option key and store the remaining in aliases.
+ if SCons.Util.is_List(key) or SCons.Util.is_Tuple(key):
+ option.key = key[0]
+ option.aliases = key[1:]
+ else:
+ option.key = key
+ option.aliases = [ key ]
+ option.help = help
+ option.default = default
+ option.validator = validator
+ option.converter = converter
+
+ self.options.append(option)
+
+ # options might be added after the 'unknown' dict has been set up,
+ # so we remove the key and all its aliases from that dict
+ for alias in list(option.aliases) + [ option.key ]:
+ # TODO(1.5)
+ #if alias in self.unknown:
+ if alias in self.unknown.keys():
+ del self.unknown[alias]
+
+ def keys(self):
+ """
+ Returns the keywords for the options
+ """
+ return map(lambda o: o.key, self.options)
+
+ def Add(self, key, help="", default=None, validator=None, converter=None, **kw):
+ """
+ Add an option.
+
+ key - the name of the variable, or a list or tuple of arguments
+ help - optional help text for the options
+ default - optional default value
+ validator - optional function that is called to validate the option's value
+ Called with (key, value, environment)
+ converter - optional function that is called to convert the option's value before
+ putting it in the environment.
+ """
+
+ if SCons.Util.is_List(key) or type(key) == type(()):
+ apply(self._do_add, key)
+ return
+
+ if not SCons.Util.is_String(key) or \
+ not SCons.Environment.is_valid_construction_var(key):
+ raise SCons.Errors.UserError, "Illegal Variables.Add() key `%s'" % str(key)
+
+ self._do_add(key, help, default, validator, converter)
+
+ def AddVariables(self, *optlist):
+ """
+ Add a list of options.
+
+ Each list element is a tuple/list of arguments to be passed on
+ to the underlying method for adding options.
+
+ Example:
+ opt.AddVariables(
+ ('debug', '', 0),
+ ('CC', 'The C compiler'),
+ ('VALIDATE', 'An option for testing validation', 'notset',
+ validator, None),
+ )
+ """
+ for o in optlist:
+ apply(self._do_add, o)
+
+
+ def Update(self, env, args=None):
+ """
+ Update an environment with the option variables.
+
+ env - the environment to update.
+ """
+
+ values = {}
+
+ # first set the defaults:
+ for option in self.options:
+ if not option.default is None:
+ values[option.key] = option.default
+
+ # next set the value specified in the options file
+ for filename in self.files:
+ if os.path.exists(filename):
+ dir = os.path.split(os.path.abspath(filename))[0]
+ if dir:
+ sys.path.insert(0, dir)
+ try:
+ values['__name__'] = filename
+ exec open(filename, 'rU').read() in {}, values
+ finally:
+ if dir:
+ del sys.path[0]
+ del values['__name__']
+
+ # set the values specified on the command line
+ if args is None:
+ args = self.args
+
+ for arg, value in args.items():
+ added = False
+ for option in self.options:
+ if arg in list(option.aliases) + [ option.key ]:
+ values[option.key] = value
+ added = True
+ if not added:
+ self.unknown[arg] = value
+
+ # put the variables in the environment:
+ # (don't copy over variables that are not declared as options)
+ for option in self.options:
+ try:
+ env[option.key] = values[option.key]
+ except KeyError:
+ pass
+
+ # Call the convert functions:
+ for option in self.options:
+ if option.converter and values.has_key(option.key):
+ value = env.subst('${%s}'%option.key)
+ try:
+ try:
+ env[option.key] = option.converter(value)
+ except TypeError:
+ env[option.key] = option.converter(value, env)
+ except ValueError, x:
+ raise SCons.Errors.UserError, 'Error converting option: %s\n%s'%(option.key, x)
+
+
+ # Finally validate the values:
+ for option in self.options:
+ if option.validator and values.has_key(option.key):
+ option.validator(option.key, env.subst('${%s}'%option.key), env)
+
+ def UnknownVariables(self):
+ """
+ Returns any options in the specified arguments lists that
+ were not known, declared options in this object.
+ """
+ return self.unknown
+
+ def Save(self, filename, env):
+ """
+ Saves all the options in the given file. This file can
+ then be used to load the options next run. This can be used
+ to create an option cache file.
+
+ filename - Name of the file to save into
+ env - the environment get the option values from
+ """
+
+ # Create the file and write out the header
+ try:
+ fh = open(filename, 'w')
+
+ try:
+ # Make an assignment in the file for each option
+ # within the environment that was assigned a value
+ # other than the default.
+ for option in self.options:
+ try:
+ value = env[option.key]
+ try:
+ prepare = value.prepare_to_store
+ except AttributeError:
+ try:
+ eval(repr(value))
+ except KeyboardInterrupt:
+ raise
+ except:
+ # Convert stuff that has a repr() that
+ # cannot be evaluated into a string
+ value = SCons.Util.to_String(value)
+ else:
+ value = prepare()
+
+ defaultVal = env.subst(SCons.Util.to_String(option.default))
+ if option.converter:
+ defaultVal = option.converter(defaultVal)
+
+ if str(env.subst('${%s}' % option.key)) != str(defaultVal):
+ fh.write('%s = %s\n' % (option.key, repr(value)))
+ except KeyError:
+ pass
+ finally:
+ fh.close()
+
+ except IOError, x:
+ raise SCons.Errors.UserError, 'Error writing options to file: %s\n%s' % (filename, x)
+
+ def GenerateHelpText(self, env, sort=None):
+ """
+ Generate the help text for the options.
+
+ env - an environment that is used to get the current values
+ of the options.
+ """
+
+ if sort:
+ options = self.options[:]
+ options.sort(lambda x,y,func=sort: func(x.key,y.key))
+ else:
+ options = self.options
+
+ def format(opt, self=self, env=env):
+ if env.has_key(opt.key):
+ actual = env.subst('${%s}' % opt.key)
+ else:
+ actual = None
+ return self.FormatVariableHelpText(env, opt.key, opt.help, opt.default, actual, opt.aliases)
+ lines = filter(None, map(format, options))
+
+ return string.join(lines, '')
+
+ format = '\n%s: %s\n default: %s\n actual: %s\n'
+ format_ = '\n%s: %s\n default: %s\n actual: %s\n aliases: %s\n'
+
+ def FormatVariableHelpText(self, env, key, help, default, actual, aliases=[]):
+ # Don't display the key name itself as an alias.
+ aliases = filter(lambda a, k=key: a != k, aliases)
+ if len(aliases)==0:
+ return self.format % (key, help, default, actual)
+ else:
+ return self.format_ % (key, help, default, actual, aliases)
+
+# Local Variables:
+# tab-width:4
+# indent-tabs-mode:nil
+# End:
+# vim: set expandtab tabstop=4 shiftwidth=4: