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import enum
import logging
from dataclasses import fields, is_dataclass
from typing import (
Any,
Callable,
Dict,
Iterator,
List,
Type,
TypeVar,
Union,
get_type_hints,
)
import click
from click import Command
from xsdata.codegen.writer import CodeWriter
from xsdata.utils import text
F = TypeVar("F", bound=Callable[..., Any])
FC = TypeVar("FC", Callable[..., Any], Command)
def model_options(obj: Any) -> Callable[[FC], FC]:
def decorator(f: F) -> F:
for option in reversed(list(build_options(obj, ""))):
option(f)
return f
return decorator
def build_options(obj: Any, parent: str) -> Iterator[Callable[[FC], FC]]:
type_hints = get_type_hints(obj)
doc_hints = get_doc_hints(obj)
for field in fields(obj):
type_hint = type_hints[field.name]
doc_hint = doc_hints[field.name]
name = field.metadata.get("cli", field.name)
if not name:
continue
qname = f"{parent}.{field.name}".strip(".")
if is_dataclass(type_hint):
yield from build_options(type_hint, qname)
else:
is_flag = False
opt_type = type_hint
if name == "output":
opt_type = click.Choice(CodeWriter.generators.keys())
names = ["-o", "--output"]
elif type_hint is bool:
is_flag = True
opt_type = None
name = text.kebab_case(name)
names = [f"--{name}/--no-{name}"]
else:
if issubclass(type_hint, enum.Enum):
opt_type = EnumChoice(type_hint)
parts = text.split_words(name)
name = "-".join(parts)
name_short = "".join(part[0] for part in parts)
names = [f"--{name}", f"-{name_short}"]
names.append("__".join(qname.split(".")))
default_value = (
field.default.value
if isinstance(field.default, enum.Enum)
else field.default
)
doc_hint += f" [default: {default_value}]"
yield click.option(
*names,
help=doc_hint,
is_flag=is_flag,
type=opt_type,
default=None,
)
def get_doc_hints(obj: Any) -> Dict[str, str]:
result = {}
for line in obj.__doc__.split(":param "):
if line[0].isalpha():
param, hint = line.split(":", 1)
result[param] = " ".join(hint.split())
return result
class EnumChoice(click.Choice):
def __init__(self, enumeration: Type[enum.Enum]):
self.enumeration = enumeration
super().__init__([e.value for e in enumeration])
def convert(self, value: Any, *args: Any) -> enum.Enum:
return self.enumeration(value)
class LogFormatter(logging.Formatter):
colors: Dict[str, Any] = {
"error": {"fg": "red"},
"exception": {"fg": "red"},
"critical": {"fg": "red"},
"debug": {"fg": "blue"},
"warning": {"fg": "yellow"},
}
def format(self, record: logging.LogRecord) -> str:
if not record.exc_info:
level = record.levelname.lower()
msg = record.getMessage()
if level in self.colors:
prefix = click.style(f"{level}", **self.colors[level])
msg = f"{prefix}: {msg}"
return msg
return super().format(record) # pragma: no cover
class LogHandler(logging.Handler):
def __init__(self, level: Union[int, str] = logging.NOTSET):
super().__init__(level)
self.warnings: List[str] = []
def emit(self, record: logging.LogRecord):
try:
msg = self.format(record)
if record.levelno > logging.INFO:
self.warnings.append(msg)
else:
click.echo(msg, err=True)
except Exception: # pragma: no cover
self.handleError(record)
def emit_warnings(self):
num = len(self.warnings)
if num:
click.echo(click.style(f"Warnings: {num}", bold=True))
for msg in self.warnings:
click.echo(msg, err=True)
self.warnings.clear()
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