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#!/usr/bin/env python3
""" The main thing about libcarrot's organization, if you haven't understood
yet, is that it works using modules. This is the main management file
for modules: module object, finding modules out of user configuration
options, and gather modules out of a list.
The used configuration formats are in `FORMATS.md`.
"""
import os, sys
import yaml
from time import time
from .exceptions import *
class SourceModule:
""" The source module class.
Extracts data from the filesystem, and offer utilities to interact
with its elements easily.
"""
def __init__(self, root, name, platform = None, mtim = None):
""" Initialize the class, gather the information from the platform
then the module configuration, and deduce module properties
out of it.
`root` is the module root (e.g. `./arch/casiowin/fxlib`).
`name` is the module name, e.g. `casiowin/fxlib`.
`mtim` is the reference modification time for the user config.
`platform` is the platform containing the module.
"""
# Open the module configuration.
mconfigpath = os.path.join(root, 'info.yml')
try:
mconfig = yaml.load(open(mconfigpath))
except (NotADirectoryError, FileNotFoundError):
Raise(ModuleNotFoundException(name))
# Check the difference to the reference time.
if mtim != None:
if os.path.getmtime(mconfigpath) > mtim:
Raise(UpdatedModuleException(name))
# Check the magic.
if 'magic' in mconfig and mconfig['magic'] != 'potatosdk-1.0':
Raise(PlatformNotFoundException(name))
# Keep the arguments.
self.root = root
self.name = name
self.__root = root
self.mtim = os.path.getmtime(mconfigpath)
# Get the usual things.
self.description = mconfig['description']
self.out = mconfig['out'] if 'out' in mconfig else 'libc'
self.deps = mconfig['deps'] if 'deps' in mconfig else []
self.conflicts = mconfig['conflicts'] if 'conflicts' in mconfig else []
# Get the requirements.
self.compilers = []
self.arch = []
if 'requires' in mconfig:
r = mconfig['requires']
if 'compiler' in r:
self.compilers = r['compiler']
if 'arch' in r:
self.arch = r['arch']
if not self.arch and platform.arch:
self.arch = platform.arch
self.roles = {}
rpath = os.path.join(root, 'roles.yml')
try:
with open(rpath) as f:
raw = yaml.load(f.read())
self.roles = self.__go_through_dirs(raw)
except (IsADirectoryError, FileNotFoundError):
pass
def __go_through_dirs(self, roles, prefix=()):
""" Read a roles file. """
elements = {}
for key, element in roles.items():
key = prefix + (key,)
if type(element) == dict:
elements.update(self.__go_through_dirs(element, key))
else:
elements[key] = element
return elements
def getpath(self, *elements):
""" Get the complete path within a directory. """
# Get the root, adjust the elements if necessary.
rt = self.__root
if elements and elements[0] == 'obj':
rt = self.__objroot
elements = elements[1:]
# Join it all and send it back!
return os.path.join(rt, *elements)
def getfiles(self, *path, ext=[], full=False):
""" Get the list of files in a directory. """
# Get the root.
root = os.path.join(self.getpath(*path), '')
# Get the source files.
files = []
for r, _, filenames in os.walk(root):
if not full:
r = r[len(root):]
for name in filenames:
pos = name.find('.')
if pos < 0 and not None in ext:
continue
elif pos >= 0 and not name[pos + 1:].lower() in ext:
continue
files.append(os.path.join(r, name))
return files
class SourcePlatform:
""" The source platform class.
Extracts data from the filesystem, and offer utilities to interact
with its element easily.
"""
def __init__(self, root, name, glob = None, mtim = None):
""" Initialize the class, gather the information from the platform
configuration, and deduce properties out of it.
`root` is the platform root (generally `./arch/casiowin`).
`name` is the platform name, e.g. `casiowin`.
`mtim` is the reference modification time for the user config.
"""
# Check that it is a platform, load the configuration.
pconfigpath = os.path.join(root, 'info.yml')
try:
pconfig = yaml.load(open(pconfigpath))
except (NotADirectoryError, FileNotFoundError):
Raise(PlatformNotFoundException(name))
# Check the difference to the reference time.
if mtim != None:
if os.path.getmtime(pconfigpath) > mtim:
Raise(UpdatedPlatformException(name))
# Check the magic.
if 'magic' in pconfig and pconfig['magic'] != 'potatosdk-1.0':
Raise(PlatformNotFoundException(name))
# Keep the arguments.
self.__root = root
self.__name = name
self.__mtim = mtim
# Get the properties.
self.description = pconfig['description']
self.defaults = pconfig['default'] if 'default' in pconfig else []
self.arch = []
if 'requires' in pconfig:
r = pconfig['requires']
if 'arch' in r:
self.arch = r['arch']
# Loaded modules.
self.__loaded = {}
def getmodule(self, name):
""" Load a submodule, e.g. "fxlib" for the "casiowin/fxlib" module. """
if name in self.__loaded:
return self.__loaded[name]
module = SourceModule(os.path.join(self.__root, name),
'%s/%s'%(self.__name, name), self, self.__mtim)
self.__loaded[name] = module
return module
def getallmodules(self):
""" Load all of the submodules. """
modules = {}
for name in os.listdir(self.__root):
try: module = self.getmodule(name)
except ModuleNotFoundException: continue
modules[name] = module
return modules
class SourceGlobal:
""" The global source class.
Extracts data from the filesystem. """
def __init__(self, root, mtim = None):
""" Initialize the class, gather the information about the source,
and deduce properties out of it.
`root` is the modules root (generally `./arch`).
`mtim` is the reference modification time for the user config.
"""
# Open the global configuration.
gconfigpath = os.path.join(root, 'info.yml')
try:
gconfig = yaml.load(open(gconfigpath))
except (NotADirectoryError, FileNotFoundError):
Raise(GlobalNotFoundException)
# Check the difference to the reference time.
if mtim != None:
if os.path.getmtime(gconfigpath) > mtim:
Raise(UpdatedGlobalException)
# Check the magic.
if 'magic' in gconfig and gconfig['magic'] != 'potatosdk-1.0':
Raise(GlobalNotFoundException)
# Keep the arguments.
self.__root = root
self.__mtim = mtim
# Get the properties.
self.version = gconfig['version']
self.description = gconfig['description']
self.arch = gconfig['arch']
# Loaded platforms.
self.__loaded = {}
def getplatform(self, name):
""" Get a platform using its name, e.g. "casiowin". """
if name in self.__loaded:
return self.__loaded[name]
platform = SourcePlatform(os.path.join(self.__root, name),
name, self, self.__mtim)
self.__loaded[name] = platform
return platform
def getallplatforms(self):
""" Get all of the existing platforms. """
platforms = {}
for name in os.listdir(self.__root):
try: platform = self.getplatform(name)
except PlatformNotFoundException: continue
platforms[name] = platform
return platforms
def getmodule(self, name):
""" Get a module. """
platform_name, module_name = name.split('/')
platform = self.getplatform(platform_name)
return platform.getmodule(module_name)
def getmodules(self, names):
""" Get a list of modules. """
modules = {}
for name in names:
modules[name] = self.getmodule(name)
return modules
def getallmodules(self):
""" Get all of the existing modules. """
modules = {}
for platform_name, platform in self.getallplatforms().items():
for module_name, module in platform.getallmodules().items():
modules['%s/%s'%(platform_name, module_name)] = module
return modules
def findmodules(self, arch, platform = None,
compiler = ('GNU', 'GCC'), languages = ['c', 'c++'],
addition = []):
""" Find modules corresponding to a query, based on:
- `arch`: the architecture for which to build;
- `platform`: the platform for which to build;
- `compiler`: the C/C++ compiler with and for which to build;
- `languages`: the programming languages for which to
offer support;
- `addition`: the additional modules to include. """
modules = {}
# In 'hand-written' information files, the user ain't using the
# '!!python/tuple' trick, so we're just going to use a list instead
# of a tuple.
compiler = list(compiler)
# Get the language defaults for the platforms.
# 'dp' means 'default platforms', 'pn' means 'platform name'.
default = {'c': [], 'c++': []}
dp = ['all']
if platform:
dp.append(platform)
for pn in dp:
p = self.getplatform(pn)
if p.arch and not arch in p.arch:
Raise(UnsupportedArchForPlatformException(arch, pn))
if 'c' in p.defaults:
default['c'] += p.defaults['c']
default['c++'] += p.defaults['c']
if 'c++' in p.defaults:
default['c++'] += p.defaults['c++']
# Gather the additional modules.
for name in set(addition):
module = self.getmodule(name)
if module.arch and not arch in module.arch:
Raise(UnsupportedArchForModuleException(name, arch))
continue
if module.compiler and not compiler in module.compiler:
Raise(UnsupportedCompilerForModuleException(name, compiler))
continue
modules[name] = module
# Gather the defaults for the languages.
# 'dm' means 'default modules', 'ldm' means 'language default modules'.
dm = []
for ldm in map(lambda x:default[x], languages):
dm.extend(ldm)
for name in dm:
module = self.getmodule(name)
if module.arch and not arch in module.arch:
continue
if module.compilers and not compiler in module.compilers:
continue
modules[name] = module
# Gather the dependencies.
# 'newdeps' is a list of tuples, where the first element of each tuple
# is the name of the module to gather, and the second is modules from
# which the dependency comes from (for logging).
newdeps = []
blacklist = []
while True:
# Get the previous dependencies.
for dep in newdeps:
name = dep[0]
try:
module = self.getmodule(name)
except (PlatformNotFoundException, ModuleNotFoundException):
Raise(UnresolvedDependencyException(name, dep[1]))
blacklist.append(name)
continue
if module.arch and not arch in module.arch:
blacklist.append(name)
elif module.compiler and not compiler in module.compiler:
blacklist.append(name)
else:
modules[name] = module
newdeps = []
# Check the dependencies.
for name, module in modules.items():
for dep in module.deps:
if not dep in modules and not dep in blacklist:
try: ndep = next(i for i in newdeps if i[0] == dep)
except: newdeps.append([dep, [name]])
else: ndep[1].append(name)
# No dependency? Good!
if not newdeps:
break
# TODO: check conflicts.
# We're done!
return modules
# End of file.
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