forked from conan-io/conan
/
env_info.py
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env_info.py
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import copy
import fnmatch
import re
from collections import OrderedDict, defaultdict
from conans.errors import ConanException
from conans.model.ref import ConanFileReference
from conans.util.log import logger
def unquote(text):
text = text.strip()
if len(text) > 1 and (text[0] == text[-1]) and text[0] in "'\"":
return text[1:-1]
return text
class EnvValues(object):
""" Object to represent the introduced env values entered by the user
with the -e or profiles etc.
self._data is a dictionary with: {package: {var: value}}
"package" can be None if the var is global.
"value" can be a list or a string. If it's a list the variable
is appendable like PATH or PYTHONPATH
"""
def __init__(self):
self._data = defaultdict(dict)
def copy(self):
ret = EnvValues()
ret._data = copy.deepcopy(self._data)
return ret
@staticmethod
def load_value(the_value):
if the_value.startswith("[") and the_value.endswith("]"):
return [val.strip() for val in the_value[1:-1].split(",") if val]
else:
return the_value
@staticmethod
def loads(text):
ret = EnvValues()
if not text:
return ret
for env_def in text.splitlines():
try:
if env_def:
if "=" not in env_def:
raise ConanException("Invalid env line '%s'" % env_def)
tmp = env_def.split("=", 1)
name = tmp[0]
value = unquote(tmp[1])
package = None
if ":" in name:
tmp = name.split(":", 1)
package = tmp[0].strip()
name = tmp[1].strip()
else:
name = name.strip()
# Lists values=> MYVAR=[1,2,three]
value = EnvValues.load_value(value)
ret.add(name, value, package)
except ConanException:
raise
except Exception as exc:
raise ConanException("Error parsing the env values: %s" % str(exc))
return ret
def dumps(self):
def append_vars(pairs, result):
for name, value in sorted(pairs.items()):
if isinstance(value, list):
value = "[%s]" % ",".join(value)
if package:
result.append("%s:%s=%s" % (package, name, value))
else:
result.append("%s=%s" % (name, value))
result = []
# First the global vars
for package, pairs in self._sorted_data:
if package is None:
append_vars(pairs, result)
# Then the package scoped ones
for package, pairs in self._sorted_data:
if package is not None:
append_vars(pairs, result)
return "\n".join(result)
@property
def data(self):
return self._data
@property
def _sorted_data(self):
# Python 3 can't compare None with strings, so if None we order just with the var name
return [(key, self._data[key]) for key in sorted(self._data, key=lambda x: x if x else "a")]
def add(self, name, value, package=None):
# New data, not previous value
if name not in self._data[package]:
self._data[package][name] = value
# There is data already
else:
# Only append at the end if we had a list
if isinstance(self._data[package][name], list):
if isinstance(value, list):
self._data[package][name].extend(value)
else:
self._data[package][name].append(value)
def remove(self, name, package=None):
del self._data[package][name]
def update_replace(self, key, value):
""" method useful for command "conan profile update"
to execute real update instead of soft update
"""
if ":" in key:
package_name, key = key.split(":", 1)
else:
package_name, key = None, key
self._data[package_name][key] = value
def update(self, env_obj):
"""accepts other EnvValues object or DepsEnvInfo
it prioritize the values that are already at self._data
"""
if env_obj:
if isinstance(env_obj, EnvValues):
for package_name, env_vars in env_obj.data.items():
for name, value in env_vars.items():
if isinstance(value, list):
value = copy.copy(value) # Aware of copying by reference the list
self.add(name, value, package_name)
# DepsEnvInfo. the OLD values are always kept, never overwrite,
elif isinstance(env_obj, DepsEnvInfo):
for (name, value) in env_obj.vars.items():
self.add(name, value)
else:
raise ConanException("unknown env type: %s" % env_obj)
def env_dicts(self, package_name, version=None, user=None, channel=None):
"""Returns two dicts of env variables that applies to package 'name',
the first for simple values A=1, and the second for multiple A=1;2;3"""
ret = {}
ret_multi = {}
# First process the global variables
global_pairs = self._data.get(None)
own_pairs = None
str_ref = str(ConanFileReference(package_name, version, user, channel, validate=False))
for pattern, v in self._data.items():
if pattern is not None and (package_name == pattern or fnmatch.fnmatch(str_ref,
pattern)):
own_pairs = v
break
if global_pairs:
for name, value in global_pairs.items():
if isinstance(value, list):
ret_multi[name] = value
else:
ret[name] = value
# Then the package scoped vars, that will override the globals
if own_pairs:
for name, value in own_pairs.items():
if isinstance(value, list):
ret_multi[name] = value
if name in ret: # Already exists a global variable, remove it
del ret[name]
else:
ret[name] = value
if name in ret_multi: # Already exists a list global variable, remove it
del ret_multi[name]
# FIXME: This dict is only used doing a ret.update(ret_multi). Unnecessary?
return ret, ret_multi
def __repr__(self):
return str(dict(self._data))
class EnvInfo(object):
""" Object that stores all the environment variables required:
env = EnvInfo()
env.hola = True
env.Cosa.append("OTRO")
env.Cosa.append("MAS")
env.Cosa = "hello"
env.Cosa.append("HOLA")
"""
def __init__(self):
self._values_ = {}
@staticmethod
def _adjust_casing(name):
"""We don't want to mix "path" with "PATH", actually we don`t want to mix anything
with different casing. Furthermore in Windows all is uppercase, but managing all in
upper case will be breaking."""
return name.upper() if name.lower() == "path" else name
def __getattr__(self, name):
if name.startswith("_") and name.endswith("_"):
return super(EnvInfo, self).__getattr__(name)
name = self._adjust_casing(name)
attr = self._values_.get(name)
if not attr:
self._values_[name] = []
return self._values_[name]
def __setattr__(self, name, value):
if name.startswith("_") and name.endswith("_"):
return super(EnvInfo, self).__setattr__(name, value)
name = self._adjust_casing(name)
self._values_[name] = value
@property
def vars(self):
return self._values_
class DepsEnvInfo(EnvInfo):
""" All the env info for a conanfile dependencies
"""
def __init__(self):
super(DepsEnvInfo, self).__init__()
self._dependencies_ = OrderedDict()
@property
def dependencies(self):
return self._dependencies_.items()
@property
def deps(self):
return self._dependencies_.keys()
def __getitem__(self, item):
return self._dependencies_[item]
def update(self, dep_env_info, pkg_name):
self._dependencies_[pkg_name] = dep_env_info
def merge_lists(seq1, seq2):
return [s for s in seq1 if s not in seq2] + seq2
# With vars if its set the keep the set value
for varname, value in dep_env_info.vars.items():
if varname not in self.vars:
self.vars[varname] = value
elif isinstance(self.vars[varname], list):
if isinstance(value, list):
self.vars[varname] = merge_lists(self.vars[varname], value)
else:
self.vars[varname] = merge_lists(self.vars[varname], [value])
else:
logger.warning("DISCARDED variable %s=%s from %s" % (varname, value, pkg_name))
def update_deps_env_info(self, dep_env_info):
assert isinstance(dep_env_info, DepsEnvInfo)
for pkg_name, env_info in dep_env_info.dependencies:
self.update(env_info, pkg_name)
@staticmethod
def loads(text):
ret = DepsEnvInfo()
lib_name = None
env_info = None
for line in text.splitlines():
if not lib_name and not line.startswith("[ENV_"):
raise ConanException("Error, invalid file format reading env info variables")
elif line.startswith("[ENV_"):
if env_info:
ret.update(env_info, lib_name)
lib_name = line[5:-1]
env_info = EnvInfo()
else:
var_name, value = line.split("=", 1)
if value and value[0] == "[" and value[-1] == "]":
# Take all the items between quotes
values = re.findall('"([^"]*)"', value[1:-1])
for val in values:
getattr(env_info, var_name).append(val)
else:
setattr(env_info, var_name, value) # peel quotes
if env_info:
ret.update(env_info, lib_name)
return ret
def dumps(self):
sections = []
for name, env_info in self._dependencies_.items():
sections.append("[ENV_%s]" % name)
for var, values in sorted(env_info.vars.items()):
tmp = "%s=" % var
if isinstance(values, list):
tmp += "[%s]" % ",".join(['"%s"' % val for val in values])
else:
tmp += '%s' % values
sections.append(tmp)
return "\n".join(sections)