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from pathlib import Path |
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from yaml import safe_load |
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from .constants import RESOURCE_LIST_FILENAME |
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from ocrd_validators import OcrdResourceListValidator |
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from ocrd_utils import getLogger |
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from ocrd_utils.constants import HOME |
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from ocrd_utils.os import list_resource_candidates, list_all_resources |
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builtin_list_filename = Path(RESOURCE_LIST_FILENAME) |
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user_list_filename = Path(HOME, 'ocrd', 'resources.yml') |
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class OcrdResourceManager(): |
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""" |
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Managing processor resources |
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""" |
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def __init__(self): |
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self.log = getLogger('ocrd.resource_manager') |
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self.database = {} |
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self.load_resource_list(builtin_list_filename) |
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self.load_resource_list(user_list_filename) |
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def load_resource_list(self, list_filename): |
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if list_filename.is_file(): |
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with open(list_filename, 'r', encoding='utf-8') as f: |
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list_loaded = safe_load(f) |
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report = OcrdResourceListValidator.validate(list_loaded) |
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if not report.is_valid: |
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self.log.error('\n'.join(report.errors)) |
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raise ValueError("Resource list %s is invalid!" % (list_filename)) |
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for executable, resource_list in list_loaded.items(): |
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if executable not in self.database: |
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self.database[executable] = [] |
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# Prepend, so user provided is sorted before builtin |
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self.database[executable] = list_loaded[executable] + self.database[executable] |
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def list_available(self, executable=None): |
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""" |
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List models available for download by processor |
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""" |
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if executable: |
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return [(executable, self.database[executable])] |
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return [(x, y) for x, y in self.database.items()] |
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def list_installed(self, executable=None): |
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""" |
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List installed resources, matching with registry by ``name`` |
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""" |
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ret = [] |
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for executable in [executable] if executable else self.database.keys(): |
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reslist = [] |
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for res_filename in list_all_resources(executable): |
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res_name = Path(res_filename).name |
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resdict = [x for x in self.database[executable] if x['name'] == res_name] |
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if not resdict: |
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resdict = [{'name': res_name, 'url': '???', 'description': '???', 'version_range': '???'}] |
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reslist.append(resdict[0]) |
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ret.append((executable, reslist)) |
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return ret |
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OCR-D /
core
