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Mini Shell
import logging
import shutil
import sys
import textwrap
import xmlrpc.client
from collections import OrderedDict
from optparse import Values
from typing import TYPE_CHECKING, Dict, List, Optional, TypedDict
from pip._vendor.packaging.version import parse as parse_version
from pip._internal.cli.base_command import Command
from pip._internal.cli.req_command import SessionCommandMixin
from pip._internal.cli.status_codes import NO_MATCHES_FOUND, SUCCESS
from pip._internal.exceptions import CommandError
from pip._internal.metadata import get_default_environment
from pip._internal.models.index import PyPI
from pip._internal.network.xmlrpc import PipXmlrpcTransport
from pip._internal.utils.logging import indent_log
from pip._internal.utils.misc import write_output
if TYPE_CHECKING:
class TransformedHit(TypedDict):
name: str
summary: str
versions: List[str]
logger = logging.getLogger(__name__)
class SearchCommand(Command, SessionCommandMixin):
"""Search for PyPI packages whose name or summary contains <query>."""
usage = """
%prog [options] <query>"""
ignore_require_venv = True
def add_options(self) -> None:
self.cmd_opts.add_option(
"-i",
"--index",
dest="index",
metavar="URL",
default=PyPI.pypi_url,
help="Base URL of Python Package Index (default %default)",
)
self.parser.insert_option_group(0, self.cmd_opts)
def run(self, options: Values, args: List[str]) -> int:
if not args:
raise CommandError("Missing required argument (search query).")
query = args
pypi_hits = self.search(query, options)
hits = transform_hits(pypi_hits)
terminal_width = None
if sys.stdout.isatty():
terminal_width = shutil.get_terminal_size()[0]
print_results(hits, terminal_width=terminal_width)
if pypi_hits:
return SUCCESS
return NO_MATCHES_FOUND
def search(self, query: List[str], options: Values) -> List[Dict[str, str]]:
index_url = options.index
session = self.get_default_session(options)
transport = PipXmlrpcTransport(index_url, session)
pypi = xmlrpc.client.ServerProxy(index_url, transport)
try:
hits = pypi.search({"name": query, "summary": query}, "or")
except xmlrpc.client.Fault as fault:
message = (
f"XMLRPC request failed [code: {fault.faultCode}]\n{fault.faultString}"
)
raise CommandError(message)
assert isinstance(hits, list)
return hits
def transform_hits(hits: List[Dict[str, str]]) -> List["TransformedHit"]:
"""
The list from pypi is really a list of versions. We want a list of
packages with the list of versions stored inline. This converts the
list from pypi into one we can use.
"""
packages: Dict[str, "TransformedHit"] = OrderedDict()
for hit in hits:
name = hit["name"]
summary = hit["summary"]
version = hit["version"]
if name not in packages.keys():
packages[name] = {
"name": name,
"summary": summary,
"versions": [version],
}
else:
packages[name]["versions"].append(version)
# if this is the highest version, replace summary and score
if version == highest_version(packages[name]["versions"]):
packages[name]["summary"] = summary
return list(packages.values())
def print_dist_installation_info(name: str, latest: str) -> None:
env = get_default_environment()
dist = env.get_distribution(name)
if dist is not None:
with indent_log():
if dist.version == latest:
write_output("INSTALLED: %s (latest)", dist.version)
else:
write_output("INSTALLED: %s", dist.version)
if parse_version(latest).pre:
write_output(
"LATEST: %s (pre-release; install"
" with `pip install --pre`)",
latest,
)
else:
write_output("LATEST: %s", latest)
def print_results(
hits: List["TransformedHit"],
name_column_width: Optional[int] = None,
terminal_width: Optional[int] = None,
) -> None:
if not hits:
return
if name_column_width is None:
name_column_width = (
max(
[
len(hit["name"]) + len(highest_version(hit.get("versions", ["-"])))
for hit in hits
]
)
+ 4
)
for hit in hits:
name = hit["name"]
summary = hit["summary"] or ""
latest = highest_version(hit.get("versions", ["-"]))
if terminal_width is not None:
target_width = terminal_width - name_column_width - 5
if target_width > 10:
# wrap and indent summary to fit terminal
summary_lines = textwrap.wrap(summary, target_width)
summary = ("\n" + " " * (name_column_width + 3)).join(summary_lines)
name_latest = f"{name} ({latest})"
line = f"{name_latest:{name_column_width}} - {summary}"
try:
write_output(line)
print_dist_installation_info(name, latest)
except UnicodeEncodeError:
pass
def highest_version(versions: List[str]) -> str:
return max(versions, key=parse_version)
Zerion Mini Shell 1.0