def load_module(self, name, extra_path=None):
"""Load a Python module that should be useable from Jamfiles.
There are generally two types of modules Jamfiles might want to
use:
- Core Boost.Build. Those are imported using plain names, e.g.
'toolset', so this function checks if we have module named
b2.package.module already.
- Python modules in the same directory as Jamfile. We don't
want to even temporary add Jamfile's directory to sys.path,
since then we might get naming conflicts between standard
Python modules and those.
"""
# See if we loaded module of this name already
existing = self.loaded_tool_modules_.get(name)
if existing:
return existing
# See if we have a module b2.whatever.<name>, where <name>
# is what is passed to this function
modules = sys.modules
for class_name in modules:
parts = class_name.split('.')
if name is class_name or parts[0] == "b2" \
and parts[-1] == name.replace("-", "_"):
module = modules[class_name]
self.loaded_tool_modules_[name] = module
return module
# Lookup a module in BOOST_BUILD_PATH
path = extra_path
if not path:
path = []
path.extend(self.manager.boost_build_path())
location = None
for p in path:
l = os.path.join(p, name + ".py")
if os.path.exists(l):
location = l
break
if not location:
self.manager.errors()("Cannot find module '%s'" % name)
mname = name + "__for_jamfile"
file = open(location)
try:
# TODO: this means we'll never make use of .pyc module,
# which might be a problem, or not.
self.loaded_tool_module_path_[mname] = location
module = imp.load_module(mname, file, os.path.basename(location),
(".py", "r", imp.PY_SOURCE))
self.loaded_tool_modules_[name] = module
return module
finally:
file.close()
def load_module(self, name, extra_path=None):
"""Load a Python module that should be useable from Jamfiles.
There are generally two types of modules Jamfiles might want to
use:
- Core Boost.Build. Those are imported using plain names, e.g.
'toolset', so this function checks if we have module named
b2.package.module already.
- Python modules in the same directory as Jamfile. We don't
want to even temporary add Jamfile's directory to sys.path,
since then we might get naming conflicts between standard
Python modules and those.
"""
# See if we loaded module of this name already
existing = self.loaded_tool_modules_.get(name)
if existing:
return existing
# See if we have a module b2.whatever.<name>, where <name>
# is what is passed to this function
modules = sys.modules
for class_name in modules:
parts = class_name.split('.')
if name is class_name or parts[0] == "b2" \
and parts[-1] == name.replace("-", "_"):
module = modules[class_name]
self.loaded_tool_modules_[name] = module
return module
# Lookup a module in BOOST_BUILD_PATH
path = extra_path
if not path:
path = []
path.extend(self.manager.boost_build_path())
location = None
for p in path:
l = os.path.join(p, name + ".py")
if os.path.exists(l):
location = l
break
if not location:
self.manager.errors()("Cannot find module '%s'" % name)
mname = name + "__for_jamfile"
file = open(location)
try:
# TODO: this means we'll never make use of .pyc module,
# which might be a problem, or not.
self.loaded_tool_module_path_[mname] = location
module = imp.load_module(mname, file, os.path.basename(location),
(".py", "r", imp.PY_SOURCE))
self.loaded_tool_modules_[name] = module
return module
finally:
file.close()
def load_module(self, name, extra_path=None):
"""Classic Boost.Build 'modules' are in fact global variables.
Therefore, try to find an already loaded Python module called 'name' in sys.modules.
If the module ist not loaded, find it Boost.Build search
path and load it. The new module is not entered in sys.modules.
The motivation here is to have disjoint namespace of modules
loaded via 'import/using' in Jamfile, and ordinary Python
modules. We don't want 'using foo' in Jamfile to load ordinary
Python module 'foo' which is going to not work. And we
also don't want 'import foo' in regular Python module to
accidentally grab module named foo that is internal to
Boost.Build and intended to provide interface to Jamfiles."""
existing = self.loaded_tool_modules_.get(name)
if existing:
return existing
modules = sys.modules
for class_name in modules:
if name is class_name:
module = modules[class_name]
self.loaded_tool_modules_[name] = module
return module
path = extra_path
if not path:
path = []
path.extend(self.manager.boost_build_path())
location = None
for p in path:
l = os.path.join(p, name + ".py")
if os.path.exists(l):
location = l
break
if not location:
self.manager.errors()("Cannot find module '%s'" % name)
mname = "__build_build_temporary__"
file = open(location)
try:
# TODO: this means we'll never make use of .pyc module,
# which might be a problem, or not.
module = imp.load_module(mname, file, os.path.basename(location),
(".py", "r", imp.PY_SOURCE))
del sys.modules[mname]
self.loaded_tool_modules_[name] = module
return module
finally:
file.close()
def load_module(self, name, extra_path=None):
"""Classic Boost.Build 'modules' are in fact global variables.
Therefore, try to find an already loaded Python module called 'name' in sys.modules.
If the module ist not loaded, find it Boost.Build search
path and load it. The new module is not entered in sys.modules.
The motivation here is to have disjoint namespace of modules
loaded via 'import/using' in Jamfile, and ordinary Python
modules. We don't want 'using foo' in Jamfile to load ordinary
Python module 'foo' which is going to not work. And we
also don't want 'import foo' in regular Python module to
accidentally grab module named foo that is internal to
Boost.Build and intended to provide interface to Jamfiles."""
existing = self.loaded_tool_modules_.get(name)
if existing:
return existing
modules = sys.modules
for class_name in modules:
if name is class_name:
module = modules[class_name]
self.loaded_tool_modules_[name] = module
return module
path = extra_path
if not path:
path = []
path.extend(self.manager.boost_build_path())
location = None
for p in path:
l = os.path.join(p, name + ".py")
if os.path.exists(l):
location = l
break
if not location:
self.manager.errors()("Cannot find module '%s'" % name)
mname = "__build_build_temporary__"
file = open(location)
try:
# TODO: this means we'll never make use of .pyc module,
# which might be a problem, or not.
module = imp.load_module(mname, file, os.path.basename(location),
(".py", "r", imp.PY_SOURCE))
del sys.modules[mname]
self.loaded_tool_modules_[name] = module
return module
finally:
file.close()
