py_env_max/scripts_cmd.py at master · markusmaresch/py_env_max · GitHub

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#
# -*- coding: utf-8 -*-
#
import datetime
import os.path

from database import Database
from os_platform import OsPlatform
from conda_cmd import CondaCmd
from pip_cmd import PipCmd
from env_cmd import EnvCmd


class ScriptsCmd:
    @staticmethod
    def scripts_export(env_name: str, python_version: str, force: bool = False) -> bool:
        # create scripts for recreating existing python environment

        def make_executable(path: str) -> bool:
            try:
                if os.path.exists(path):
                    new_mode = old_mode = os.stat(path).st_mode
                    new_mode |= (old_mode & 0o444) >> 2  # copy R bits to X
                    if new_mode != old_mode:
                        os.chmod(path, new_mode)
                    # fi
                    return True
                # fi
            except:
                pass
            return False

        print('scripts_export: {} (force={})'.format(env_name, force))
        db_name = '{}.json'.format(env_name)
        db = Database()
        if not db.load(db_name):
            print('scripts_export: attempting to call environment import before')
            if not EnvCmd.env_import(env_name=env_name, force=False):
                return False
            if not db.load(db_name):
                return False
            # fi
            print('scripts_export: load succeeded ..')
        # fi
        packages = db.packages_get_names_all()
        list_name = f'{env_name}.txt'
        with open(list_name, 'w') as f:
            for p in sorted(packages):
                f.write(f'{p}\n')
            # for
        # with
        print('packages: {}'.format(list_name))

        pip_freeze_txt_name = f'{env_name}_pip_freeze.txt'
        if not PipCmd.pip_freeze(pip_freeze_txt_name):
            print('scripts_export: pip_freeze failed')
            return False
        print(f'script: {pip_freeze_txt_name}')

        script_extension = OsPlatform.script_extension()
        script_comment = OsPlatform.script_comment()
        datetime_utc_iso_string = datetime.datetime.now(datetime.timezone.utc).isoformat()
        try:
            level = 0
            script_name = '{}_{:02d}.{}'.format(env_name, level, script_extension)
            with open(script_name, 'w') as single:
                single.write('{} {}\n'.format(script_comment, datetime_utc_iso_string))
                single.write('{} Level {} .. fix below !\n'.format(script_comment, level))
                single.write('{} conda create --name {}_XXX python={}\n'
                             .format(script_comment, env_name, python_version))
            # with
            make_executable(script_name)
        except Exception as e:
            print('Error: {}'.format(e))
            return False
        script_all_name = '{}_all.{}'.format(env_name, script_extension)
        script_packages_sorted_name = f'{env_name}_packages_sorted.txt'
        print(f'script: {script_all_name}')
        print(f'script: {script_packages_sorted_name}')
        with open(script_all_name, 'w') as all, \
                open(script_packages_sorted_name, 'w') as ps:
            for level in range(1, 20):
                packs = db.packages_get_names_by_level(level=level)
                if packs is None or len(packs) < 1:
                    break
                script_name = '{}_{:02d}.{}'.format(env_name, level, script_extension)
                print('script: {:02d} {} .. {}'.format(level, len(packs), script_name))
                max_without_check = 10
                with open(script_name, 'w') as single:
                    out = '{} {}\n'.format(script_comment, datetime_utc_iso_string)
                    single.write(out)
                    if level == 1:
                        all.write(out)
                    # fi
                    out = f'{script_comment} Level {level}\n'
                    single.write(out)
                    all.write(out)
                    ii = 0
                    first_letter = ''
                    finish_check = True
                    for package in packs:
                        version = db.package_get_version_required(package)
                        if first_letter == '':
                            first_letter = package[0]
                        # fi
                        if first_letter != package[0]:
                            first_letter = ''
                            ii = 0
                            out = 'pip check\n'
                            single.write(out)
                            all.write(out)
                        elif ii >= max_without_check:
                            ii = 0
                            out = 'pip check\n'
                            single.write(out)
                            all.write(out)
                        # fi
                        ii += 1

                        # should be '==', but sometimes versions are not found
                        out = f'pip install "{package}>={version}"\n'
                        single.write(out)
                        all.write(out)
                        ps.write(f'{package}\n')
                    # for
                    if finish_check:
                        out = 'pip check\n'
                        single.write(out)
                        all.write(out)
                    out = f'{script_comment} Level {level}\n'
                    single.write(out)
                    all.write(out)
                # with
                make_executable(script_name)
            # for
        # with
        make_executable(script_all_name)
        db.close()

        conda_list_txt_name = f'{env_name}_conda_list.txt'
        if not CondaCmd.conda_list(conda_list_txt_name):
            print('scripts_export: conda_list failed')
            return False
        print(f'script: {conda_list_txt_name}')

        conda_env_export_yml_name = f'{env_name}_conda_env_export.yml'
        if not CondaCmd.conda_env_export(conda_env_export_yml_name):
            print('scripts_export: env_export failed')
            return False
        print(f'script: {conda_env_export_yml_name}')

        return True