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import json
import logging
import os
from six import iteritems
from .utils import build_pj_path
logger = logging.getLogger(__name__)
class PackageJsonWorkspaceError(RuntimeError):
pass
class PackageJson(object):
DEP_KEY = "dependencies"
DEV_DEP_KEY = "devDependencies"
PEER_DEP_KEY = "peerDependencies"
OPT_DEP_KEY = "optionalDependencies"
DEP_KEYS = (DEP_KEY, DEV_DEP_KEY, PEER_DEP_KEY, OPT_DEP_KEY)
WORKSPACE_SCHEMA = "workspace:"
@classmethod
def load(cls, path):
"""
:param path: package.json path
:type path: str
:rtype: PackageJson
"""
pj = cls(path)
pj.read()
return pj
def __init__(self, path):
if not os.path.isabs(path):
raise TypeError("Absolute path required, given: {}".format(path))
self.path = path
self.data = None
def read(self):
with open(self.path) as f:
self.data = json.load(f)
def write(self, path=None):
"""
:param path: path to store package.json, defaults to original path
:type path: str
"""
if path is None:
path = self.path
directory = os.path.dirname(path)
if not os.path.exists(directory):
os.mkdir(directory)
with open(path, "w") as f:
json.dump(self.data, f, indent=2, ensure_ascii=False)
f.write('\n') # it's better for diff algorithm in arc
logger.debug("Written {}".format(path))
def get_name(self):
name = self.data.get("name")
if not name:
name = self.path.replace("/", "-")
return name
def get_version(self):
return self.data["version"]
def get_description(self):
return self.data.get("description")
def get_nodejs_version(self):
return self.data.get("engines", {}).get("node")
def get_dep_specifier(self, dep_name):
for name, spec in self.dependencies_iter():
if dep_name == name:
return spec
return None
def dependencies_iter(self):
for key in self.DEP_KEYS:
deps = self.data.get(key)
if not deps:
continue
for name, spec in iteritems(deps):
yield (name, spec)
def has_dependencies(self):
first_dep = next(self.dependencies_iter(), None)
return first_dep is not None
def bins_iter(self):
bins = self.data.get("bin")
if isinstance(bins, str):
yield bins
elif isinstance(bins, dict):
for bin in bins.values():
yield bin
def get_workspace_dep_spec_paths(self):
"""
Returns names and paths from specifiers of the defined workspace dependencies.
:rtype: list of (str, str)
"""
spec_paths = []
schema = self.WORKSPACE_SCHEMA
schema_len = len(schema)
for name, spec in self.dependencies_iter():
if not spec.startswith(schema):
continue
spec_path = spec[schema_len:]
if not (spec_path.startswith(".") or spec_path.startswith("..")):
raise PackageJsonWorkspaceError(
"Expected relative path specifier for workspace dependency, but got '{}' for {} in {}".format(
spec, name, self.path
)
)
spec_paths.append((name, spec_path))
return spec_paths
def get_workspace_dep_paths(self, base_path=None):
"""
Returns paths of the defined workspace dependencies.
:param base_path: base path to resolve relative dep paths
:type base_path: str
:rtype: list of str
"""
if base_path is None:
base_path = os.path.dirname(self.path)
return [os.path.normpath(os.path.join(base_path, p)) for _, p in self.get_workspace_dep_spec_paths()]
def get_workspace_deps(self):
"""
:rtype: list of PackageJson
"""
ws_deps = []
pj_dir = os.path.dirname(self.path)
for name, rel_path in self.get_workspace_dep_spec_paths():
dep_path = os.path.normpath(os.path.join(pj_dir, rel_path))
dep_pj = PackageJson.load(build_pj_path(dep_path))
if name != dep_pj.get_name():
raise PackageJsonWorkspaceError(
"Workspace dependency name mismatch, found '{}' instead of '{}' in {}".format(
name, dep_pj.get_name(), self.path
)
)
ws_deps.append(dep_pj)
return ws_deps
def get_workspace_map(self, ignore_self=False):
"""
Returns absolute paths of the workspace dependencies (including transitive) mapped to package.json and depth.
:param ignore_self: whether path of the current module will be excluded
:type ignore_self: bool
:rtype: dict of (PackageJson, int)
"""
ws_deps = {}
# list of (pj, depth)
pj_queue = [(self, 0)]
while len(pj_queue):
(pj, depth) = pj_queue.pop()
pj_dir = os.path.dirname(pj.path)
if pj_dir in ws_deps:
continue
if not ignore_self or pj != self:
ws_deps[pj_dir] = (pj, depth)
for dep_pj in pj.get_workspace_deps():
pj_queue.append((dep_pj, depth + 1))
return ws_deps
def get_dep_paths_by_names(self):
"""
Returns dict of {dependency_name: dependency_path}
"""
ws_map = self.get_workspace_map()
return {pj.get_name(): path for path, (pj, _) in ws_map.items()}
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