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import json
import ssl
import urllib.request
from typing import Dict, Any, Tuple, List
from ..exceptions import PackageError, SysCallError
from ..general import SysCommand
from ..models.dataclasses import PackageSearch, PackageSearchResult, LocalPackage
BASE_URL_PKG_SEARCH = 'https://archlinux.org/packages/search/json/?name={package}'
# BASE_URL_PKG_CONTENT = 'https://archlinux.org/packages/search/json/'
BASE_GROUP_URL = 'https://archlinux.org/groups/search/json/?name={group}'
def group_search(name :str) -> List[PackageSearchResult]:
# TODO UPSTREAM: Implement /json/ for the groups search
ssl_context = ssl.create_default_context()
ssl_context.check_hostname = False
ssl_context.verify_mode = ssl.CERT_NONE
try:
response = urllib.request.urlopen(BASE_GROUP_URL.format(group=name), context=ssl_context)
except urllib.error.HTTPError as err:
if err.code == 404:
return []
else:
raise err
# Just to be sure some code didn't slip through the exception
data = response.read().decode('UTF-8')
return [PackageSearchResult(**package) for package in json.loads(data)['results']]
def package_search(package :str) -> PackageSearch:
"""
Finds a specific package via the package database.
It makes a simple web-request, which might be a bit slow.
"""
# TODO UPSTREAM: Implement bulk search, either support name=X&name=Y or split on space (%20 or ' ')
# TODO: utilize pacman cache first, upstream second.
ssl_context = ssl.create_default_context()
ssl_context.check_hostname = False
ssl_context.verify_mode = ssl.CERT_NONE
response = urllib.request.urlopen(BASE_URL_PKG_SEARCH.format(package=package), context=ssl_context)
if response.code != 200:
raise PackageError(f"Could not locate package: [{response.code}] {response}")
data = response.read().decode('UTF-8')
return PackageSearch(**json.loads(data))
def find_package(package :str) -> List[PackageSearchResult]:
data = package_search(package)
results = []
for result in data.results:
if result.pkgname == package:
results.append(result)
# If we didn't find the package in the search results,
# odds are it's a group package
if not results:
# Check if the package is actually a group
for result in group_search(package):
results.append(result)
return results
def find_packages(*names :str) -> Dict[str, Any]:
"""
This function returns the search results for many packages.
The function itself is rather slow, so consider not sending to
many packages to the search query.
"""
result = {}
for package in names:
for found_package in find_package(package):
result[package] = found_package
return result
def validate_package_list(packages :list) -> Tuple[list, list]:
"""
Validates a list of given packages.
return: Tuple of lists containing valid packavges in the first and invalid
packages in the second entry
"""
valid_packages = {package for package in packages if find_package(package)}
invalid_packages = set(packages) - valid_packages
return list(valid_packages), list(invalid_packages)
def installed_package(package :str) -> LocalPackage:
package_info = {}
try:
for line in SysCommand(f"pacman -Q --info {package}"):
if b':' in line:
key, value = line.decode().split(':', 1)
package_info[key.strip().lower().replace(' ', '_')] = value.strip()
except SysCallError:
pass
return LocalPackage(**package_info)
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