ocrd.resource_manager.OcrdResourceManager._copy_dir() - Code Metrics - Inspection of "fix: resmgr download directories" - OCR-D/core - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Pull Request — master (#1248)

unknown

created 2024-07-04 08:50 UTC

OcrdResourceManager._copy_dir() A

↳ Parent: ocrd.resource_manager

Complexity

Conditions

Size

Total Lines	14
Code Lines	13

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
eloc	13
dl	0
loc	14
rs	9.75
c	0
b	0
f	0
cc	4
nop	3

from pathlib import Path
from os.path import join
from os import environ, listdir, makedirs, getcwd, path, unlink
from shutil import copytree, rmtree, copy
from fnmatch import filter as apply_glob
from datetime import datetime
from tarfile import open as open_tarfile
from urllib.parse import urlparse, unquote
from zipfile import ZipFile

import requests
from gdown.parse_url import parse_url as gparse_url
from gdown.download import get_url_from_gdrive_confirmation
from yaml import safe_load, safe_dump

# https://github.com/OCR-D/core/issues/867
# https://stackoverflow.com/questions/50900727/skip-converting-entities-while-loading-a-yaml-string-using-pyyaml
import yaml.constructor
yaml.constructor.SafeConstructor.yaml_constructors[u'tag:yaml.org,2002:timestamp'] = \
    yaml.constructor.SafeConstructor.yaml_constructors[u'tag:yaml.org,2002:str']

from ocrd_validators import OcrdResourceListValidator
from ocrd_utils import getLogger, directory_size, get_moduledir, EXT_TO_MIME, nth_url_segment, guess_media_type, config
from ocrd_utils.os import get_processor_resource_types, list_all_resources, pushd_popd, get_ocrd_tool_json
from .constants import RESOURCE_LIST_FILENAME, RESOURCE_USER_LIST_COMMENT


class OcrdResourceManager:

    """
    Managing processor resources
    """
    def __init__(self, userdir=None, xdg_config_home=None, xdg_data_home=None, skip_init=False):
        self.log = getLogger('ocrd.resource_manager')
        self.database = {}

        self._xdg_data_home = xdg_data_home
        self._xdg_config_home = xdg_config_home
        self._userdir = userdir
        self.user_list = Path(self.xdg_config_home, 'ocrd', 'resources.yml')

        if not skip_init:
            self.load_resource_list(Path(RESOURCE_LIST_FILENAME))
            if not self.user_list.exists():
                if not self.user_list.parent.exists():
                    self.user_list.parent.mkdir(parents=True)
                self.save_user_list()
            self.load_resource_list(self.user_list)

    @property
    def userdir(self):
        if not self._userdir:
            self._userdir = config.HOME
        return self._userdir

    @property
    def xdg_data_home(self):
        if not self._xdg_data_home:
            self._xdg_data_home = config.XDG_DATA_HOME
        return self._xdg_data_home

    @property
    def xdg_config_home(self):
        if self._xdg_config_home:
            return self._xdg_config_home
        return config.XDG_CONFIG_HOME

    def save_user_list(self, database=None):
        if not database:
            database = self.database
        with open(self.user_list, 'w', encoding='utf-8') as f:
            f.write(RESOURCE_USER_LIST_COMMENT)
            f.write('\n')
            f.write(safe_dump(database))

    def load_resource_list(self, list_filename, database=None):
        if not database:
            database = self.database
        if list_filename.is_file():
            with open(list_filename, 'r', encoding='utf-8') as f:
                list_loaded = safe_load(f) or {}
            report = OcrdResourceListValidator.validate(list_loaded)
            if not report.is_valid:
                self.log.error('\n'.join(report.errors))
                raise ValueError(f"Resource list {list_filename} is invalid!")
            for executable, resource_list in list_loaded.items():
                if executable not in database:
                    database[executable] = []
                # Prepend, so user provided is sorted before builtin
                database[executable] = list_loaded[executable] + database[executable]
        return database

    def list_available(self, executable=None, dynamic=True, name=None, database=None, url=None):
        """
        List models available for download by processor
        """
        if not database:
            database = self.database
        if not executable:
            return database.items()
        if dynamic:
            for exec_dir in environ['PATH'].split(':'):
                for exec_path in Path(exec_dir).glob(f'{executable}'):
                    self.log.debug(f"Inspecting '{exec_path} --dump-json' for resources")
                    ocrd_tool = get_ocrd_tool_json(exec_path)
                    for resdict in ocrd_tool.get('resources', ()):
                        if exec_path.name not in database:
                            database[exec_path.name] = []
                        database[exec_path.name].insert(0, resdict)
            database = self._dedup_database(database)
        found = False
        ret = []
        for k in database:
            if apply_glob([k], executable):
                found = True
                restuple = (k, [])
                ret.append(restuple)
                for resdict in database[k]:
                    if name and resdict['name'] != name:
                        continue
                    if url and resdict['url'] != url:
                        continue
                    restuple[1].append(resdict)
        if not found:
            ret = [(executable, [])]
        return ret

    def list_installed(self, executable=None):
        """
        List installed resources, matching with registry by ``name``
        """
        ret = []
        if executable:
            all_executables = [executable]
        else:
            # resources we know about
            all_executables = list(self.database.keys())
            # resources in the file system
            parent_dirs = [join(x, 'ocrd-resources') for x in [self.xdg_data_home, '/usr/local/share']]
            for parent_dir in parent_dirs:
                if Path(parent_dir).exists():
                    all_executables += [x for x in listdir(parent_dir) if x.startswith('ocrd-')]
        for this_executable in set(all_executables):
            reslist = []
            mimetypes = get_processor_resource_types(this_executable)
            moduledir = get_moduledir(this_executable)
            for res_filename in list_all_resources(this_executable, moduled=moduledir, xdg_data_home=self.xdg_data_home):
                res_filename = Path(res_filename)
                if not '*/*' in mimetypes:
                    if res_filename.is_dir() and not 'text/directory' in mimetypes:
                        continue
                    if res_filename.is_file() and ['text/directory'] == mimetypes:
                        continue
                res_name = res_filename.name
                res_type = 'file' if res_filename.is_file() else 'directory'
                res_size = res_filename.stat().st_size if res_filename.is_file() else directory_size(res_filename)
                resdict_list = [x for x in self.database.get(this_executable, []) if x['name'] == res_name]
                if resdict_list:
                    resdict = resdict_list[0]
                elif str(res_filename.parent) == moduledir:
                    resdict = {
                        'name': res_name, 
                        'url': str(res_filename), 
                        'description': 'Found at module', 
                        'type': res_type,
                        'size': res_size
                    }
                else:
                    resdict = self.add_to_user_database(this_executable, res_filename, resource_type=res_type)
                resdict['path'] = str(res_filename)
                reslist.append(resdict)
            ret.append((this_executable, reslist))
        return ret

    def add_to_user_database(self, executable, res_filename, url=None, resource_type='file'):
        """
        Add a stub entry to the user resource.yml
        """
        res_name = Path(res_filename).name
        self.log.info(f"{executable} resource '{res_name}' ({str(res_filename)}) not a known resource, "
                      f"creating stub in {self.user_list}'")
        if Path(res_filename).is_dir():
            res_size = directory_size(res_filename)
        else:
            res_size = Path(res_filename).stat().st_size
        with open(self.user_list, 'r', encoding='utf-8') as f:
            user_database = safe_load(f) or {}
        if executable not in user_database:
            user_database[executable] = []
        resources_found = self.list_available(executable=executable, name=res_name, database=user_database)[0][1]
        if not resources_found:
            resdict = {
                'name': res_name,
                'url': url if url else '???',
                'description': f'Found at {self.resource_dir_to_location(res_filename)} on {datetime.now()}',
                'version_range': '???',
                'type': resource_type,
                'size': res_size
            }
            user_database[executable].append(resdict)
        else:
            resdict = resources_found[0]
        self.save_user_list(user_database)
        self.load_resource_list(self.user_list)
        return resdict

    @property
    def default_resource_dir(self):
        return self.location_to_resource_dir('data')

    def location_to_resource_dir(self, location):
        return '/usr/local/share/ocrd-resources' if location == 'system' else \
                join(self.xdg_data_home, 'ocrd-resources') if location == 'data' else \
                getcwd()

    def resource_dir_to_location(self, resource_path):
        resource_path = str(resource_path)
        return 'system' if resource_path.startswith('/usr/local/share/ocrd-resources') else \
               'data' if resource_path.startswith(join(self.xdg_data_home, 'ocrd-resources')) else \
               'cwd' if resource_path.startswith(getcwd()) else \
               resource_path

    @staticmethod
    def parameter_usage(name, usage='as-is'):
        if usage == 'as-is':
            return name
        elif usage == 'without-extension':
            return Path(name).stem
        raise ValueError(f"No such usage '{usage}'")

    @staticmethod
    def _download_impl(url, filename, progress_cb=None, size=None):
        log = getLogger('ocrd.resource_manager._download_impl')
        log.info(f"Downloading {url} to {filename}")
        with open(filename, 'wb') as f:
            gdrive_file_id, is_gdrive_download_link = gparse_url(url, warning=False)
            if gdrive_file_id:
                if not is_gdrive_download_link:
                    url = f"https://drive.google.com/uc?id={gdrive_file_id}"
                try:
                    with requests.get(url, stream=True) as r:
                        if "Content-Disposition" not in r.headers:
                            url = get_url_from_gdrive_confirmation(r.text)
                except RuntimeError as e:
                    log.warning("Cannot unwrap Google Drive URL: ", e)
            with requests.get(url, stream=True) as r:
                r.raise_for_status()
                for data in r.iter_content(chunk_size=4096):
                    if progress_cb:
                        progress_cb(len(data))
                    f.write(data)

    @staticmethod
    def _copy_file(src, dst, progress_cb=None):
        log = getLogger('ocrd.resource_manager._copy_file')
        log.info(f"Copying file {src} to {dst}")
        with open(dst, 'wb') as f_out, open(src, 'rb') as f_in:
            while True:
                chunk = f_in.read(4096)
                if chunk:
                    f_out.write(chunk)
                    if progress_cb:
                        progress_cb(len(chunk))
                else:
                    break

    @staticmethod
    def _copy_dir(src, dst, progress_cb=None):
        log = getLogger('ocrd.resource_manager._copy_dir')
        log.info(f"Copying dir recursively from {src} to {dst}")
        if not Path(src).is_dir():
            raise ValueError(f"The source is not a directory: {src}")
        makedirs(name=dst, exist_ok=True)
        for child in Path(src).rglob('*'):
            child_dst = Path(dst) / child.relative_to(src)
            child_dst.parent.mkdir(parents=True, exist_ok=True)
            if Path(child).is_dir():
                OcrdResourceManager._copy_dir(child, child_dst, progress_cb)
            else:
                OcrdResourceManager._copy_file(child, child_dst, progress_cb)

    @staticmethod
    def _copy_impl(src_filename, filename, progress_cb=None):
        log = getLogger('ocrd.resource_manager._copy_impl')
        log.info(f"Copying {src_filename} to {filename}")
        if Path(src_filename).is_dir():
            OcrdResourceManager._copy_dir(src_filename, filename, progress_cb)
        else:
            OcrdResourceManager._copy_file(src_filename, filename, progress_cb)

    # TODO Proper caching (make head request for size, If-Modified etc)
    def download(
        self, executable, url, basedir, overwrite=False, no_subdir=False, name=None, resource_type='file',
        path_in_archive='.', progress_cb=None,
    ):
        """
        Download a resource by URL
        """
        log = getLogger('ocrd.resource_manager.download')
        destdir = Path(basedir) if no_subdir else Path(basedir, executable)
        if not name:
            url_parsed = urlparse(url)
            name = Path(unquote(url_parsed.path)).name
        fpath = Path(destdir, name)
        is_url = url.startswith('https://') or url.startswith('http://')
        if fpath.exists():
            if not overwrite:
                fpath_type = 'Directory' if fpath.is_dir() else 'File'
                raise FileExistsError(f"{fpath_type} {fpath} already exists but --overwrite is not set")
            if fpath.is_dir():
                log.info(f"Removing existing target directory {fpath}")
                rmtree(str(fpath))
            else:
                log.info(f"Removing existing target file {fpath}")
                unlink(str(fpath))
        destdir.mkdir(parents=True, exist_ok=True)
        if resource_type in ('file', 'directory'):
            if is_url:
                self._download_impl(url, fpath, progress_cb)
            else:
                self._copy_impl(url, fpath, progress_cb)
        elif resource_type == 'archive':
            archive_fname = 'download.tar.xx'
            with pushd_popd(tempdir=True) as tempdir:
                if is_url:
                    self._download_impl(url, archive_fname, progress_cb)
                else:
                    self._copy_impl(url, archive_fname, progress_cb)
                Path('out').mkdir()
                with pushd_popd('out'):
                    mimetype = guess_media_type(f'../{archive_fname}', fallback='application/octet-stream')
                    log.info(f"Extracting {mimetype} archive to {tempdir}/out")
                    if mimetype == 'application/zip':
                        with ZipFile(f'../{archive_fname}', 'r') as zipf:
                            zipf.extractall()
                    elif mimetype in ('application/gzip', 'application/x-xz'):
                        with open_tarfile(f'../{archive_fname}', 'r:*') as tar:
                            tar.extractall()
                    else:
                        raise RuntimeError(f"Unable to handle extraction of {mimetype} archive {url}")
                    log.info(f"Copying '{path_in_archive}' from archive to {fpath}")
                    if Path(path_in_archive).is_dir():
                        copytree(path_in_archive, str(fpath))
                    else:
                        copy(path_in_archive, str(fpath))
            if Path(tempdir).exists():
                log.info(f"Removing temp dir {tempdir}")
                rmtree(tempdir)
        return fpath

    def _dedup_database(self, database=None, dedup_key='name'):
        """
        Deduplicate resources by name
        """
        if not database:
            database = self.database
        for executable, reslist in database.items():
            reslist_dedup = []
            for resdict in reslist:
                if not any(r[dedup_key] == resdict[dedup_key] for r in reslist_dedup):
                    reslist_dedup.append(resdict)
            database[executable] = reslist_dedup
        return database


1			from pathlib import Path
2			from os.path import join
3			from os import environ, listdir, makedirs, getcwd, path, unlink
4			from shutil import copytree, rmtree, copy
5			from fnmatch import filter as apply_glob
6			from datetime import datetime
7			from tarfile import open as open_tarfile
8			from urllib.parse import urlparse, unquote
9			from zipfile import ZipFile
10
11			import requests
12			from gdown.parse_url import parse_url as gparse_url
13			from gdown.download import get_url_from_gdrive_confirmation
14			from yaml import safe_load, safe_dump
15
16			# https://github.com/OCR-D/core/issues/867
17			# https://stackoverflow.com/questions/50900727/skip-converting-entities-while-loading-a-yaml-string-using-pyyaml
18			import yaml.constructor
19			yaml.constructor.SafeConstructor.yaml_constructors[u'tag:yaml.org,2002:timestamp'] = \
20			yaml.constructor.SafeConstructor.yaml_constructors[u'tag:yaml.org,2002:str']
21
22			from ocrd_validators import OcrdResourceListValidator
23			from ocrd_utils import getLogger, directory_size, get_moduledir, EXT_TO_MIME, nth_url_segment, guess_media_type, config
24			from ocrd_utils.os import get_processor_resource_types, list_all_resources, pushd_popd, get_ocrd_tool_json
25			from .constants import RESOURCE_LIST_FILENAME, RESOURCE_USER_LIST_COMMENT
26
27
28			class OcrdResourceManager:
29
30			"""
31			Managing processor resources
32			"""
33			def __init__(self, userdir=None, xdg_config_home=None, xdg_data_home=None, skip_init=False):
34			self.log = getLogger('ocrd.resource_manager')
35			self.database = {}
36
37			self._xdg_data_home = xdg_data_home
38			self._xdg_config_home = xdg_config_home
39			self._userdir = userdir
40			self.user_list = Path(self.xdg_config_home, 'ocrd', 'resources.yml')
41
42			if not skip_init:
43			self.load_resource_list(Path(RESOURCE_LIST_FILENAME))
44			if not self.user_list.exists():
45			if not self.user_list.parent.exists():
46			self.user_list.parent.mkdir(parents=True)
47			self.save_user_list()
48			self.load_resource_list(self.user_list)
49
50			@property
51			def userdir(self):
52			if not self._userdir:
53			self._userdir = config.HOME
54			return self._userdir
55
56			@property
57			def xdg_data_home(self):
58			if not self._xdg_data_home:
59			self._xdg_data_home = config.XDG_DATA_HOME
60			return self._xdg_data_home
61
62			@property
63			def xdg_config_home(self):
64			if self._xdg_config_home:
65			return self._xdg_config_home
66			return config.XDG_CONFIG_HOME
67
68			def save_user_list(self, database=None):
69			if not database:
70			database = self.database
71			with open(self.user_list, 'w', encoding='utf-8') as f:
72			f.write(RESOURCE_USER_LIST_COMMENT)
73			f.write('\n')
74			f.write(safe_dump(database))
75
76			def load_resource_list(self, list_filename, database=None):
77			if not database:
78			database = self.database
79			if list_filename.is_file():
80			with open(list_filename, 'r', encoding='utf-8') as f:
81			list_loaded = safe_load(f) or {}
82			report = OcrdResourceListValidator.validate(list_loaded)
83			if not report.is_valid:
84			self.log.error('\n'.join(report.errors))
85			raise ValueError(f"Resource list {list_filename} is invalid!")
86			for executable, resource_list in list_loaded.items():
87			if executable not in database:
88			database[executable] = []
89			# Prepend, so user provided is sorted before builtin
90			database[executable] = list_loaded[executable] + database[executable]
91			return database
92
93			def list_available(self, executable=None, dynamic=True, name=None, database=None, url=None):
94			"""
95			List models available for download by processor
96			"""
97			if not database:
98			database = self.database
99			if not executable:
100			return database.items()
101			if dynamic:
102			for exec_dir in environ['PATH'].split(':'):
103			for exec_path in Path(exec_dir).glob(f'{executable}'):
104			self.log.debug(f"Inspecting '{exec_path} --dump-json' for resources")
105			ocrd_tool = get_ocrd_tool_json(exec_path)
106			for resdict in ocrd_tool.get('resources', ()):
107			if exec_path.name not in database:
108			database[exec_path.name] = []
109			database[exec_path.name].insert(0, resdict)
110			database = self._dedup_database(database)
111			found = False
112			ret = []
113			for k in database:
114			if apply_glob([k], executable):
115			found = True
116			restuple = (k, [])
117			ret.append(restuple)
118			for resdict in database[k]:
119			if name and resdict['name'] != name:
120			continue
121			if url and resdict['url'] != url:
122			continue
123			restuple[1].append(resdict)
124			if not found:
125			ret = [(executable, [])]
126			return ret
127
128			def list_installed(self, executable=None):
129			"""
130			List installed resources, matching with registry by ``name``
131			"""
132			ret = []
133			if executable:
134			all_executables = [executable]
135			else:
136			# resources we know about
137			all_executables = list(self.database.keys())
138			# resources in the file system
139			parent_dirs = [join(x, 'ocrd-resources') for x in [self.xdg_data_home, '/usr/local/share']]
140			for parent_dir in parent_dirs:
141			if Path(parent_dir).exists():
142			all_executables += [x for x in listdir(parent_dir) if x.startswith('ocrd-')]
143			for this_executable in set(all_executables):
144			reslist = []
145			mimetypes = get_processor_resource_types(this_executable)
146			moduledir = get_moduledir(this_executable)
147			for res_filename in list_all_resources(this_executable, moduled=moduledir, xdg_data_home=self.xdg_data_home):
148			res_filename = Path(res_filename)
149			if not '/' in mimetypes:
150			if res_filename.is_dir() and not 'text/directory' in mimetypes:
151			continue
152			if res_filename.is_file() and ['text/directory'] == mimetypes:
153			continue
154			res_name = res_filename.name
155			res_type = 'file' if res_filename.is_file() else 'directory'
156			res_size = res_filename.stat().st_size if res_filename.is_file() else directory_size(res_filename)
157			resdict_list = [x for x in self.database.get(this_executable, []) if x['name'] == res_name]
158			if resdict_list:
159			resdict = resdict_list[0]
160			elif str(res_filename.parent) == moduledir:
161			resdict = {
162			'name': res_name,
163			'url': str(res_filename),
164			'description': 'Found at module',
165			'type': res_type,
166			'size': res_size
167			}
168			else:
169			resdict = self.add_to_user_database(this_executable, res_filename, resource_type=res_type)
170			resdict['path'] = str(res_filename)
171			reslist.append(resdict)
172			ret.append((this_executable, reslist))
173			return ret
174
175			def add_to_user_database(self, executable, res_filename, url=None, resource_type='file'):
176			"""
177			Add a stub entry to the user resource.yml
178			"""
179			res_name = Path(res_filename).name
180			self.log.info(f"{executable} resource '{res_name}' ({str(res_filename)}) not a known resource, "
181			f"creating stub in {self.user_list}'")
182			if Path(res_filename).is_dir():
183			res_size = directory_size(res_filename)
184			else:
185			res_size = Path(res_filename).stat().st_size
186			with open(self.user_list, 'r', encoding='utf-8') as f:
187			user_database = safe_load(f) or {}
188			if executable not in user_database:
189			user_database[executable] = []
190			resources_found = self.list_available(executable=executable, name=res_name, database=user_database)[0][1]
191			if not resources_found:
192			resdict = {
193			'name': res_name,
194			'url': url if url else '???',
195			'description': f'Found at {self.resource_dir_to_location(res_filename)} on {datetime.now()}',
196			'version_range': '???',
197			'type': resource_type,
198			'size': res_size
199			}
200			user_database[executable].append(resdict)
201			else:
202			resdict = resources_found[0]
203			self.save_user_list(user_database)
204			self.load_resource_list(self.user_list)
205			return resdict
206
207			@property
208			def default_resource_dir(self):
209			return self.location_to_resource_dir('data')
210
211			def location_to_resource_dir(self, location):
212			return '/usr/local/share/ocrd-resources' if location == 'system' else \
213			join(self.xdg_data_home, 'ocrd-resources') if location == 'data' else \
214			getcwd()
215
216			def resource_dir_to_location(self, resource_path):
217			resource_path = str(resource_path)
218			return 'system' if resource_path.startswith('/usr/local/share/ocrd-resources') else \
219			'data' if resource_path.startswith(join(self.xdg_data_home, 'ocrd-resources')) else \
220			'cwd' if resource_path.startswith(getcwd()) else \
221			resource_path
222
223			@staticmethod
224			def parameter_usage(name, usage='as-is'):
225			if usage == 'as-is':
226			return name
227			elif usage == 'without-extension':
228			return Path(name).stem
229			raise ValueError(f"No such usage '{usage}'")
230
231			@staticmethod
232			def _download_impl(url, filename, progress_cb=None, size=None):
233			log = getLogger('ocrd.resource_manager._download_impl')
234			log.info(f"Downloading {url} to {filename}")
235			with open(filename, 'wb') as f:
236			gdrive_file_id, is_gdrive_download_link = gparse_url(url, warning=False)
237			if gdrive_file_id:
238			if not is_gdrive_download_link:
239			url = f"https://drive.google.com/uc?id={gdrive_file_id}"
240			try:
241			with requests.get(url, stream=True) as r:
242			if "Content-Disposition" not in r.headers:
243			url = get_url_from_gdrive_confirmation(r.text)
244			except RuntimeError as e:
245			log.warning("Cannot unwrap Google Drive URL: ", e)
246			with requests.get(url, stream=True) as r:
247			r.raise_for_status()
248			for data in r.iter_content(chunk_size=4096):
249			if progress_cb:
250			progress_cb(len(data))
251			f.write(data)
252
253			@staticmethod
254			def _copy_file(src, dst, progress_cb=None):
255			log = getLogger('ocrd.resource_manager._copy_file')
256			log.info(f"Copying file {src} to {dst}")
257			with open(dst, 'wb') as f_out, open(src, 'rb') as f_in:
258			while True:
259			chunk = f_in.read(4096)
260			if chunk:
261			f_out.write(chunk)
262			if progress_cb:
263			progress_cb(len(chunk))
264			else:
265			break
266
267			@staticmethod
268			def _copy_dir(src, dst, progress_cb=None):
269			log = getLogger('ocrd.resource_manager._copy_dir')
270			log.info(f"Copying dir recursively from {src} to {dst}")
271			if not Path(src).is_dir():
272			raise ValueError(f"The source is not a directory: {src}")
273			makedirs(name=dst, exist_ok=True)
274			for child in Path(src).rglob('*'):
275			child_dst = Path(dst) / child.relative_to(src)
276			child_dst.parent.mkdir(parents=True, exist_ok=True)
277			if Path(child).is_dir():
278			OcrdResourceManager._copy_dir(child, child_dst, progress_cb)
279			else:
280			OcrdResourceManager._copy_file(child, child_dst, progress_cb)
281
282			@staticmethod
283			def _copy_impl(src_filename, filename, progress_cb=None):
284			log = getLogger('ocrd.resource_manager._copy_impl')
285			log.info(f"Copying {src_filename} to {filename}")
286			if Path(src_filename).is_dir():
287			OcrdResourceManager._copy_dir(src_filename, filename, progress_cb)
288			else:
289			OcrdResourceManager._copy_file(src_filename, filename, progress_cb)
290
291			# TODO Proper caching (make head request for size, If-Modified etc)
292			def download(
293			self, executable, url, basedir, overwrite=False, no_subdir=False, name=None, resource_type='file',
294			path_in_archive='.', progress_cb=None,
295			):
296			"""
297			Download a resource by URL
298			"""
299			log = getLogger('ocrd.resource_manager.download')
300			destdir = Path(basedir) if no_subdir else Path(basedir, executable)
301			if not name:
302			url_parsed = urlparse(url)
303			name = Path(unquote(url_parsed.path)).name
304			fpath = Path(destdir, name)
305			is_url = url.startswith('https://') or url.startswith('http://')
306			if fpath.exists():
307			if not overwrite:
308			fpath_type = 'Directory' if fpath.is_dir() else 'File'
309			raise FileExistsError(f"{fpath_type} {fpath} already exists but --overwrite is not set")
310			if fpath.is_dir():
311			log.info(f"Removing existing target directory {fpath}")
312			rmtree(str(fpath))
313			else:
314			log.info(f"Removing existing target file {fpath}")
315			unlink(str(fpath))
316			destdir.mkdir(parents=True, exist_ok=True)
317			if resource_type in ('file', 'directory'):
318			if is_url:
319			self._download_impl(url, fpath, progress_cb)
320			else:
321			self._copy_impl(url, fpath, progress_cb)
322			elif resource_type == 'archive':
323			archive_fname = 'download.tar.xx'
324			with pushd_popd(tempdir=True) as tempdir:
325			if is_url:
326			self._download_impl(url, archive_fname, progress_cb)
327			else:
328			self._copy_impl(url, archive_fname, progress_cb)
329			Path('out').mkdir()
330			with pushd_popd('out'):
331			mimetype = guess_media_type(f'../{archive_fname}', fallback='application/octet-stream')
332			log.info(f"Extracting {mimetype} archive to {tempdir}/out")
333			if mimetype == 'application/zip':
334			with ZipFile(f'../{archive_fname}', 'r') as zipf:
335			zipf.extractall()
336			elif mimetype in ('application/gzip', 'application/x-xz'):
337			with open_tarfile(f'../{archive_fname}', 'r:*') as tar:
338			tar.extractall()
339			else:
340			raise RuntimeError(f"Unable to handle extraction of {mimetype} archive {url}")
341			log.info(f"Copying '{path_in_archive}' from archive to {fpath}")
342			if Path(path_in_archive).is_dir():
343			copytree(path_in_archive, str(fpath))
344			else:
345			copy(path_in_archive, str(fpath))
346			if Path(tempdir).exists():
347			log.info(f"Removing temp dir {tempdir}")
348			rmtree(tempdir)
349			return fpath
350
351			def _dedup_database(self, database=None, dedup_key='name'):
352			"""
353			Deduplicate resources by name
354			"""
355			if not database:
356			database = self.database
357			for executable, reslist in database.items():
358			reslist_dedup = []
359			for resdict in reslist:
360			if not any(r[dedup_key] == resdict[dedup_key] for r in reslist_dedup):
361			reslist_dedup.append(resdict)
362			database[executable] = reslist_dedup
363			return database
364

OCR-D / core

Pull Request — master (#1248)

OcrdResourceManager._copy_dir() A

Complexity

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Duplication

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Duplication Side-by-Side

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