Python django.conf.settings 模块，FILE_CHARSET 实例源码

def preprocess(self):
        """
        Preprocess (if necessary) a translatable file before passing it to
        xgettext GNU gettext utility.
        """
        from django.utils.translation import templatize

        if not self.is_templatized:
            return

        with io.open(self.path, 'r', encoding=settings.FILE_CHARSET) as fp:
            src_data = fp.read()

        if self.domain == 'djangojs':
            content = prepare_js_for_gettext(src_data)
        elif self.domain == 'django':
            content = templatize(src_data, self.path[2:])

        with io.open(self.work_path, 'w', encoding='utf-8') as fp:
            fp.write(content)

def get_template(self, template_name):
        tried = []
        for template_file in self.iter_template_filenames(template_name):
            try:
                with io.open(template_file, encoding=settings.FILE_CHARSET) as fp:
                    template_code = fp.read()
            except IOError as e:
                if e.errno == errno.ENOENT:
                    tried.append((
                        Origin(template_file, template_name, self),
                        'Source does not exist',
                    ))
                    continue
                raise

            return Template(template_code)

        else:
            raise TemplateDoesNotExist(template_name, tried=tried, backend=self)

def preprocess(self):
        """
        Preprocess (if necessary) a translatable file before passing it to
        xgettext GNU gettext utility.
        """
        from django.utils.translation import templatize

        if not self.is_templatized:
            return

        with io.open(self.path, 'r', encoding=settings.FILE_CHARSET) as fp:
            src_data = fp.read()

        if self.domain == 'djangojs':
            content = prepare_js_for_gettext(src_data)
        elif self.domain == 'django':
            content = templatize(src_data, self.path[2:])

        with io.open(self.work_path, 'w', encoding='utf-8') as fp:
            fp.write(content)

def preprocess(self):
        """
        Preprocess (if necessary) a translatable file before passing it to
        xgettext GNU gettext utility.
        """
        if not self.is_templatized:
            return

        encoding = settings.FILE_CHARSET if self.command.settings_available else 'utf-8'
        with io.open(self.path, 'r', encoding=encoding) as fp:
            src_data = fp.read()

        if self.domain == 'djangojs':
            content = prepare_js_for_gettext(src_data)
        elif self.domain == 'django':
            content = templatize(src_data, origin=self.path[2:], charset=encoding)

        with io.open(self.work_path, 'w', encoding='utf-8') as fp:
            fp.write(content)

def preprocess(self):
        """
        Preprocess (if necessary) a translatable file before passing it to
        xgettext GNU gettext utility.
        """
        if not self.is_templatized:
            return

        encoding = settings.FILE_CHARSET if self.command.settings_available else 'utf-8'
        with io.open(self.path, 'r', encoding=encoding) as fp:
            src_data = fp.read()

        if self.domain == 'djangojs':
            content = prepare_js_for_gettext(src_data)
        elif self.domain == 'django':
            content = templatize(src_data, origin=self.path[2:], charset=encoding)

        with io.open(self.work_path, 'w', encoding='utf-8') as fp:
            fp.write(content)

def preprocess(self):
        """
        Preprocess (if necessary) a translatable file before passing it to
        xgettext GNU gettext utility.
        """
        from django.utils.translation import templatize

        if not self.is_templatized:
            return

        with io.open(self.path, 'r', encoding=settings.FILE_CHARSET) as fp:
            src_data = fp.read()

        if self.domain == 'djangojs':
            content = prepare_js_for_gettext(src_data)
        elif self.domain == 'django':
            content = templatize(src_data, self.path[2:])

        with io.open(self.work_path, 'w', encoding='utf-8') as fp:
            fp.write(content)

def preprocess(self):
        """
        Preprocess (if necessary) a translatable file before passing it to
        xgettext GNU gettext utility.
        """
        from django.utils.translation import templatize

        if not self.is_templatized:
            return

        with io.open(self.path, 'r', encoding=settings.FILE_CHARSET) as fp:
            src_data = fp.read()

        if self.domain == 'djangojs':
            content = prepare_js_for_gettext(src_data)
        elif self.domain == 'django':
            content = templatize(src_data, self.path[2:])

        with io.open(self.work_path, 'w', encoding='utf-8') as fp:
            fp.write(content)

def preprocess(self):
        """
        Preprocess (if necessary) a translatable file before passing it to
        xgettext GNU gettext utility.
        """
        from django.utils.translation import templatize

        if not self.is_templatized:
            return

        with io.open(self.path, 'r', encoding=settings.FILE_CHARSET) as fp:
            src_data = fp.read()

        if self.domain == 'djangojs':
            content = prepare_js_for_gettext(src_data)
        elif self.domain == 'django':
            content = templatize(src_data, self.path[2:])

        with io.open(self.work_path, 'w', encoding='utf-8') as fp:
            fp.write(content)

def preprocess(self):
        """
        Preprocess (if necessary) a translatable file before passing it to
        xgettext GNU gettext utility.
        """
        from django.utils.translation import templatize

        if not self.is_templatized:
            return

        with io.open(self.path, 'r', encoding=settings.FILE_CHARSET) as fp:
            src_data = fp.read()

        if self.domain == 'djangojs':
            content = prepare_js_for_gettext(src_data)
        elif self.domain == 'django':
            content = templatize(src_data, self.path[2:])

        with io.open(self.work_path, 'w', encoding='utf-8') as fp:
            fp.write(content)

def preprocess(self):
        """
        Preprocess (if necessary) a translatable file before passing it to
        xgettext GNU gettext utility.
        """
        if not self.is_templatized:
            return

        encoding = settings.FILE_CHARSET if self.command.settings_available else 'utf-8'
        with io.open(self.path, 'r', encoding=encoding) as fp:
            src_data = fp.read()

        if self.domain == 'djangojs':
            content = prepare_js_for_gettext(src_data)
        elif self.domain == 'django':
            content = templatize(src_data, origin=self.path[2:], charset=encoding)

        with io.open(self.work_path, 'w', encoding='utf-8') as fp:
            fp.write(content)

def get_template(self, template_name):
        tried = []
        for template_file in self.iter_template_filenames(template_name):
            try:
                with io.open(template_file, encoding=settings.FILE_CHARSET) as fp:
                    template_code = fp.read()
            except IOError as e:
                if e.errno == errno.ENOENT:
                    tried.append((
                        Origin(template_file, template_name, self),
                        'Source does not exist',
                    ))
                    continue
                raise

            return Template(template_code)

        else:
            raise TemplateDoesNotExist(template_name, tried=tried, backend=self)

def configure_from_settings(self, settings):
        # Default configuration
        self.charset = settings.FILE_CHARSET
        self.autorefresh = settings.DEBUG
        self.use_finders = settings.DEBUG
        self.static_prefix = urlparse(settings.STATIC_URL or '').path
        if settings.DEBUG:
            self.max_age = 0
        # Allow settings to override default attributes
        for attr in self.config_attrs:
            settings_key = 'WHITENOISE_{0}'.format(attr.upper())
            try:
                value = getattr(settings, settings_key)
            except AttributeError:
                pass
            else:
                value = decode_if_byte_string(value)
                setattr(self, attr, value)
        self.static_prefix = ensure_leading_trailing_slash(self.static_prefix)
        self.static_root = decode_if_byte_string(settings.STATIC_ROOT)

def preprocess(self):
        """
        Preprocess (if necessary) a translatable file before passing it to
        xgettext GNU gettext utility.
        """
        from django.utils.translation import templatize

        if not self.is_templatized:
            return

        with io.open(self.path, 'r', encoding=settings.FILE_CHARSET) as fp:
            src_data = fp.read()

        if self.domain == 'djangojs':
            content = prepare_js_for_gettext(src_data)
        elif self.domain == 'django':
            content = templatize(src_data, self.path[2:])

        with io.open(self.work_path, 'w', encoding='utf-8') as fp:
            fp.write(content)

def preprocess(self):
        """
        Preprocess (if necessary) a translatable file before passing it to
        xgettext GNU gettext utility.
        """
        from django.utils.translation import templatize

        if not self.is_templatized:
            return

        with io.open(self.path, 'r', encoding=settings.FILE_CHARSET) as fp:
            src_data = fp.read()

        if self.domain == 'djangojs':
            content = prepare_js_for_gettext(src_data)
        elif self.domain == 'django':
            content = templatize(src_data, self.path[2:])

        with io.open(self.work_path, 'w', encoding='utf-8') as fp:
            fp.write(content)

def _load_all_templates(directory):
    """
    Loads all templates in a directory (recursively) and yields tuples of
    template tokens and template paths.
    """
    if os.path.exists(directory):
        for name in os.listdir(directory):
            path = os.path.join(directory, name)
            if os.path.isdir(path):
                for template in _load_all_templates(path):
                    yield template
            elif path.endswith('.html'):
                with open(path, 'rb') as fobj:
                    source = fobj.read().decode(settings.FILE_CHARSET)
                    if DJANGO_1_8:
                        lexer = Lexer(source, path)
                    else:
                        lexer = Lexer(source)
                    yield lexer.tokenize(), path

def preprocess(self):
        """
        Preprocess (if necessary) a translatable file before passing it to
        xgettext GNU gettext utility.
        """
        from django.utils.translation import templatize

        if not self.is_templatized:
            return

        with io.open(self.path, 'r', encoding=settings.FILE_CHARSET) as fp:
            src_data = fp.read()

        if self.domain == 'djangojs':
            content = prepare_js_for_gettext(src_data)
        elif self.domain == 'django':
            content = templatize(src_data, self.path[2:])

        with io.open(self.work_path, 'w', encoding='utf-8') as fp:
            fp.write(content)

def preprocess(self):
        """
        Preprocess (if necessary) a translatable file before passing it to
        xgettext GNU gettext utility.
        """
        if not self.is_templatized:
            return

        encoding = settings.FILE_CHARSET if self.command.settings_available else 'utf-8'
        with io.open(self.path, 'r', encoding=encoding) as fp:
            src_data = fp.read()

        if self.domain == 'djangojs':
            content = prepare_js_for_gettext(src_data)
        elif self.domain == 'django':
            content = templatize(src_data, origin=self.path[2:], charset=encoding)

        with io.open(self.work_path, 'w', encoding='utf-8') as fp:
            fp.write(content)

def get_template(self, template_name):
        tried = []
        for template_file in self.iter_template_filenames(template_name):
            try:
                with io.open(template_file, encoding=settings.FILE_CHARSET) as fp:
                    template_code = fp.read()
            except IOError as e:
                if e.errno == errno.ENOENT:
                    tried.append((
                        Origin(template_file, template_name, self),
                        'Source does not exist',
                    ))
                    continue
                raise

            return Template(template_code)

        else:
            raise TemplateDoesNotExist(template_name, tried=tried, backend=self)

def preprocess(self):
        """
        Preprocess (if necessary) a translatable file before passing it to
        xgettext GNU gettext utility.
        """
        from django.utils.translation import templatize

        if not self.is_templatized:
            return

        with io.open(self.path, 'r', encoding=settings.FILE_CHARSET) as fp:
            src_data = fp.read()

        if self.domain == 'djangojs':
            content = prepare_js_for_gettext(src_data)
        elif self.domain == 'django':
            content = templatize(src_data, self.path[2:])

        with io.open(self.work_path, 'w', encoding='utf-8') as fp:
            fp.write(content)

def preprocess(self):
        """
        Preprocess (if necessary) a translatable file before passing it to
        xgettext GNU gettext utility.
        """
        from django.utils.translation import templatize

        if not self.is_templatized:
            return

        with io.open(self.path, 'r', encoding=settings.FILE_CHARSET) as fp:
            src_data = fp.read()

        if self.domain == 'djangojs':
            content = prepare_js_for_gettext(src_data)
        elif self.domain == 'django':
            content = templatize(src_data, self.path[2:])

        with io.open(self.work_path, 'w', encoding='utf-8') as fp:
            fp.write(content)

def get_template(self, template_name):
        tried = []
        for template_file in self.iter_template_filenames(template_name):
            try:
                with io.open(template_file, encoding=settings.FILE_CHARSET) as fp:
                    template_code = fp.read()
            except IOError as e:
                if e.errno == errno.ENOENT:
                    tried.append((
                        Origin(template_file, template_name, self),
                        'Source does not exist',
                    ))
                    continue
                raise

            return Template(template_code)

        else:
            raise TemplateDoesNotExist(template_name, tried=tried, backend=self)

def preprocess(self):
        """
        Preprocess (if necessary) a translatable file before passing it to
        xgettext GNU gettext utility.
        """
        from django.utils.translation import templatize

        if not self.is_templatized:
            return

        with io.open(self.path, 'r', encoding=settings.FILE_CHARSET) as fp:
            src_data = fp.read()

        if self.domain == 'djangojs':
            content = prepare_js_for_gettext(src_data)
        elif self.domain == 'django':
            content = templatize(src_data, self.path[2:])

        with io.open(self.work_path, 'w', encoding='utf-8') as fp:
            fp.write(content)

def custom_sql_for_model(model, style, connection):
    opts = model._meta
    app_dir = os.path.normpath(os.path.join(os.path.dirname(upath(models.get_app(model._meta.app_label).__file__)), 'sql'))
    output = []

    # Post-creation SQL should come before any initial SQL data is loaded.
    # However, this should not be done for models that are unmanaged or
    # for fields that are part of a parent model (via model inheritance).
    if opts.managed:
        post_sql_fields = [f for f in opts.local_fields if hasattr(f, 'post_create_sql')]
        for f in post_sql_fields:
            output.extend(f.post_create_sql(style, model._meta.db_table))

    # Find custom SQL, if it's available.
    backend_name = connection.settings_dict['ENGINE'].split('.')[-1]
    sql_files = [os.path.join(app_dir, "%s.%s.sql" % (opts.model_name, backend_name)),
                 os.path.join(app_dir, "%s.sql" % opts.model_name)]
    for sql_file in sql_files:
        if os.path.exists(sql_file):
            with codecs.open(sql_file, 'U', encoding=settings.FILE_CHARSET) as fp:
                # Some backends can't execute more than one SQL statement at a time,
                # so split into separate statements.
                output.extend(_split_statements(fp.read()))
    return output

def preprocess(self):
        """
        Preprocess (if necessary) a translatable file before passing it to
        xgettext GNU gettext utility.
        """
        from django.utils.translation import templatize

        if not self.is_templatized:
            return

        with io.open(self.path, 'r', encoding=settings.FILE_CHARSET) as fp:
            src_data = fp.read()

        if self.domain == 'djangojs':
            content = prepare_js_for_gettext(src_data)
        elif self.domain == 'django':
            content = templatize(src_data, self.path[2:])

        with io.open(self.work_path, 'w', encoding='utf-8') as fp:
            fp.write(content)

def preprocess(self):
        """
        Preprocess (if necessary) a translatable file before passing it to
        xgettext GNU gettext utility.
        """
        if not self.is_templatized:
            return

        encoding = settings.FILE_CHARSET if self.command.settings_available else 'utf-8'
        with io.open(self.path, 'r', encoding=encoding) as fp:
            src_data = fp.read()

        if self.domain == 'djangojs':
            content = prepare_js_for_gettext(src_data)
        elif self.domain == 'django':
            content = templatize(src_data, origin=self.path[2:], charset=encoding)

        with io.open(self.work_path, 'w', encoding='utf-8') as fp:
            fp.write(content)

def preprocess(self):
        """
        Preprocess (if necessary) a translatable file before passing it to
        xgettext GNU gettext utility.
        """
        from django.utils.translation import templatize

        if not self.is_templatized:
            return

        with io.open(self.path, 'r', encoding=settings.FILE_CHARSET) as fp:
            src_data = fp.read()

        if self.domain == 'djangojs':
            content = prepare_js_for_gettext(src_data)
        elif self.domain == 'django':
            content = templatize(src_data, self.path[2:])

        with io.open(self.work_path, 'w', encoding='utf-8') as fp:
            fp.write(content)

def get_template(self, template_name):
        tried = []
        for template_file in self.iter_template_filenames(template_name):
            try:
                with io.open(template_file, encoding=settings.FILE_CHARSET) as fp:
                    template_code = fp.read()
            except IOError as e:
                if e.errno == errno.ENOENT:
                    tried.append((
                        Origin(template_file, template_name, self),
                        'Source does not exist',
                    ))
                    continue
                raise

            return Template(template_code)

        else:
            raise TemplateDoesNotExist(template_name, tried=tried, backend=self)

def preprocess(self):
        """
        Preprocess (if necessary) a translatable file before passing it to
        xgettext GNU gettext utility.
        """
        if not self.is_templatized:
            return

        encoding = settings.FILE_CHARSET if self.command.settings_available else 'utf-8'
        with io.open(self.path, 'r', encoding=encoding) as fp:
            src_data = fp.read()

        if self.domain == 'djangojs':
            content = prepare_js_for_gettext(src_data)
        elif self.domain == 'django':
            content = templatize(src_data, origin=self.path[2:], charset=encoding)

        with io.open(self.work_path, 'w', encoding='utf-8') as fp:
            fp.write(content)

def get_template(self, template_name):
        tried = []
        for template_file in self.iter_template_filenames(template_name):
            try:
                with io.open(template_file, encoding=settings.FILE_CHARSET) as fp:
                    template_code = fp.read()
            except IOError as e:
                if e.errno == errno.ENOENT:
                    tried.append((
                        Origin(template_file, template_name, self),
                        'Source does not exist',
                    ))
                    continue
                raise

            return Template(template_code)

        else:
            raise TemplateDoesNotExist(template_name, tried=tried, backend=self)

def preprocess(self):
        """
        Preprocess (if necessary) a translatable file before passing it to
        xgettext GNU gettext utility.
        """
        from django.utils.translation import templatize

        if not self.is_templatized:
            return

        with io.open(self.path, 'r', encoding=settings.FILE_CHARSET) as fp:
            src_data = fp.read()

        if self.domain == 'djangojs':
            content = prepare_js_for_gettext(src_data)
        elif self.domain == 'django':
            content = templatize(src_data, self.path[2:])

        with io.open(self.work_path, 'w', encoding='utf-8') as fp:
            fp.write(content)

def preprocess(self):
        """
        Preprocess (if necessary) a translatable file before passing it to
        xgettext GNU gettext utility.
        """
        from django.utils.translation import templatize

        if not self.is_templatized:
            return

        with io.open(self.path, 'r', encoding=settings.FILE_CHARSET) as fp:
            src_data = fp.read()

        if self.domain == 'djangojs':
            content = prepare_js_for_gettext(src_data)
        elif self.domain == 'django':
            content = templatize(src_data, self.path[2:])

        with io.open(self.work_path, 'w', encoding='utf-8') as fp:
            fp.write(content)

def load_template_source(self, template_name, template_dirs=None):
        for path in self.get_template_sources(template_name):
            try:
                with io.open(path, encoding=settings.FILE_CHARSET) as file:
                    return (file.read(), path)
            except IOError:
                pass
        raise TemplateDoesNotExist(template_name)

def load_template_source(self, template_name, template_dirs=None):
        for path in self.get_template_sources(template_name):
            try:
                with io.open(path, encoding=settings.FILE_CHARSET) as file:
                    return file.read(), path
            except IOError:
                pass
        raise TemplateDoesNotExist(template_name)

def __init__(self, params):
        params = params.copy()
        options = params.pop('OPTIONS').copy()
        options.setdefault('debug', settings.DEBUG)
        options.setdefault('file_charset', settings.FILE_CHARSET)
        libraries = options.get('libraries', {})
        options['libraries'] = self.get_templatetag_libraries(libraries)
        super(DjangoTemplates, self).__init__(params)
        self.engine = Engine(self.dirs, self.app_dirs, **options)

def decorate_templatize(func):
    def templatize(src, origin=None):
        src = to_text(src, settings.FILE_CHARSET)
        if origin.endswith(".pug"):
            html = process(src,compiler=Compiler)
        else:
            html = src
        return func(html, origin)

    return templatize

def custom_sql_for_model(model, style, connection):
    opts = model._meta
    app_dirs = []
    app_dir = apps.get_app_config(model._meta.app_label).path
    app_dirs.append(os.path.normpath(os.path.join(app_dir, 'sql')))

    # Deprecated location -- remove in Django 1.9
    old_app_dir = os.path.normpath(os.path.join(app_dir, 'models/sql'))
    if os.path.exists(old_app_dir):
        warnings.warn("Custom SQL location '<app_label>/models/sql' is "
                      "deprecated, use '<app_label>/sql' instead.",
                      RemovedInDjango19Warning)
        app_dirs.append(old_app_dir)

    output = []

    # Post-creation SQL should come before any initial SQL data is loaded.
    # However, this should not be done for models that are unmanaged or
    # for fields that are part of a parent model (via model inheritance).
    if opts.managed:
        post_sql_fields = [f for f in opts.local_fields if hasattr(f, 'post_create_sql')]
        for f in post_sql_fields:
            output.extend(f.post_create_sql(style, model._meta.db_table))

    # Find custom SQL, if it's available.
    backend_name = connection.settings_dict['ENGINE'].split('.')[-1]
    sql_files = []
    for app_dir in app_dirs:
        sql_files.append(os.path.join(app_dir, "%s.%s.sql" % (opts.model_name, backend_name)))
        sql_files.append(os.path.join(app_dir, "%s.sql" % opts.model_name))
    for sql_file in sql_files:
        if os.path.exists(sql_file):
            with io.open(sql_file, encoding=settings.FILE_CHARSET) as fp:
                output.extend(connection.ops.prepare_sql_script(fp.read(), _allow_fallback=True))
    return output

def app_prefixed_loader(template_name, template_dirs=None):
    packed = template_name.split('/', 1)
    if len(packed) == 2 and packed[0] in app_template_dirs:
        path = os.path.join(app_template_dirs[packed[0]], packed[1])
        try:
            return (open(path).read().decode(settings.FILE_CHARSET), path)
        except IOError:
            pass
    raise TemplateDoesNotExist, template_name

def custom_sql_for_model(model, style, connection):
    opts = model._meta
    app_dirs = []
    app_dir = apps.get_app_config(model._meta.app_label).path
    app_dirs.append(os.path.normpath(os.path.join(app_dir, 'sql')))

    # Deprecated location -- remove in Django 1.9
    old_app_dir = os.path.normpath(os.path.join(app_dir, 'models/sql'))
    if os.path.exists(old_app_dir):
        warnings.warn("Custom SQL location '<app_label>/models/sql' is "
                      "deprecated, use '<app_label>/sql' instead.",
                      RemovedInDjango19Warning)
        app_dirs.append(old_app_dir)

    output = []

    # Post-creation SQL should come before any initial SQL data is loaded.
    # However, this should not be done for models that are unmanaged or
    # for fields that are part of a parent model (via model inheritance).
    if opts.managed:
        post_sql_fields = [f for f in opts.local_fields if hasattr(f, 'post_create_sql')]
        for f in post_sql_fields:
            output.extend(f.post_create_sql(style, model._meta.db_table))

    # Find custom SQL, if it's available.
    backend_name = connection.settings_dict['ENGINE'].split('.')[-1]
    sql_files = []
    for app_dir in app_dirs:
        sql_files.append(os.path.join(app_dir, "%s.%s.sql" % (opts.model_name, backend_name)))
        sql_files.append(os.path.join(app_dir, "%s.sql" % opts.model_name))
    for sql_file in sql_files:
        if os.path.exists(sql_file):
            with io.open(sql_file, encoding=settings.FILE_CHARSET) as fp:
                output.extend(connection.ops.prepare_sql_script(fp.read(), _allow_fallback=True))
    return output

def custom_sql_for_model(model, style, connection):
    opts = model._meta
    app_dirs = []
    app_dir = apps.get_app_config(model._meta.app_label).path
    app_dirs.append(os.path.normpath(os.path.join(app_dir, 'sql')))

    # Deprecated location -- remove in Django 1.9
    old_app_dir = os.path.normpath(os.path.join(app_dir, 'models/sql'))
    if os.path.exists(old_app_dir):
        warnings.warn("Custom SQL location '<app_label>/models/sql' is "
                      "deprecated, use '<app_label>/sql' instead.",
                      RemovedInDjango19Warning)
        app_dirs.append(old_app_dir)

    output = []

    # Post-creation SQL should come before any initial SQL data is loaded.
    # However, this should not be done for models that are unmanaged or
    # for fields that are part of a parent model (via model inheritance).
    if opts.managed:
        post_sql_fields = [f for f in opts.local_fields if hasattr(f, 'post_create_sql')]
        for f in post_sql_fields:
            output.extend(f.post_create_sql(style, model._meta.db_table))

    # Find custom SQL, if it's available.
    backend_name = connection.settings_dict['ENGINE'].split('.')[-1]
    sql_files = []
    for app_dir in app_dirs:
        sql_files.append(os.path.join(app_dir, "%s.%s.sql" % (opts.model_name, backend_name)))
        sql_files.append(os.path.join(app_dir, "%s.sql" % opts.model_name))
    for sql_file in sql_files:
        if os.path.exists(sql_file):
            with io.open(sql_file, encoding=settings.FILE_CHARSET) as fp:
                output.extend(connection.ops.prepare_sql_script(fp.read(), _allow_fallback=True))
    return output

def __init__(self, params):
        params = params.copy()
        options = params.pop('OPTIONS').copy()
        options.setdefault('autoescape', True)
        options.setdefault('debug', settings.DEBUG)
        options.setdefault('file_charset', settings.FILE_CHARSET)
        libraries = options.get('libraries', {})
        options['libraries'] = self.get_templatetag_libraries(libraries)
        super(DjangoTemplates, self).__init__(params)
        self.engine = Engine(self.dirs, self.app_dirs, **options)

def __init__(self, params):
        params = params.copy()
        options = params.pop('OPTIONS').copy()
        options.setdefault('autoescape', True)
        options.setdefault('debug', settings.DEBUG)
        options.setdefault('file_charset', settings.FILE_CHARSET)
        libraries = options.get('libraries', {})
        options['libraries'] = self.get_templatetag_libraries(libraries)
        super(DjangoTemplates, self).__init__(params)
        self.engine = Engine(self.dirs, self.app_dirs, **options)

def __init__(self, params):
        params = params.copy()
        options = params.pop('OPTIONS').copy()
        options.setdefault('debug', settings.DEBUG)
        options.setdefault('file_charset', settings.FILE_CHARSET)
        libraries = options.get('libraries', {})
        options['libraries'] = self.get_templatetag_libraries(libraries)
        super(DjangoTemplates, self).__init__(params)
        self.engine = Engine(self.dirs, self.app_dirs, **options)

def __init__(self, params):
        """ Hard override of init to use our engine. """
        params = params.copy()
        options = params.pop('OPTIONS').copy()
        options.setdefault('autoescape', True)
        options.setdefault('debug', settings.DEBUG)
        options.setdefault('file_charset', settings.FILE_CHARSET)
        libraries = options.get('libraries', {})
        options['libraries'] = self.get_templatetag_libraries(libraries)
        super(django.DjangoTemplates, self).__init__(params)
        self.engine = Engine(self.dirs, self.app_dirs, **options)

def load_template_source(self, template_name, template_dirs=None):
        if not self._valid_template(template_name):
            raise TemplateDoesNotExist(template_name)

        try:
            template = get_env().get_template(template_name)
        except jinja2.TemplateNotFound:
            raise TemplateDoesNotExist(template_name)

        with open(template.filename, 'rb') as fp:
            return (fp.read().decode(settings.FILE_CHARSET), template.filename)

def custom_sql_for_model(model, style, connection):
    opts = model._meta
    app_dirs = []
    app_dir = apps.get_app_config(model._meta.app_label).path
    app_dirs.append(os.path.normpath(os.path.join(app_dir, 'sql')))

    # Deprecated location -- remove in Django 1.9
    old_app_dir = os.path.normpath(os.path.join(app_dir, 'models/sql'))
    if os.path.exists(old_app_dir):
        warnings.warn("Custom SQL location '<app_label>/models/sql' is "
                      "deprecated, use '<app_label>/sql' instead.",
                      RemovedInDjango19Warning)
        app_dirs.append(old_app_dir)

    output = []

    # Post-creation SQL should come before any initial SQL data is loaded.
    # However, this should not be done for models that are unmanaged or
    # for fields that are part of a parent model (via model inheritance).
    if opts.managed:
        post_sql_fields = [f for f in opts.local_fields if hasattr(f, 'post_create_sql')]
        for f in post_sql_fields:
            output.extend(f.post_create_sql(style, model._meta.db_table))

    # Find custom SQL, if it's available.
    backend_name = connection.settings_dict['ENGINE'].split('.')[-1]
    sql_files = []
    for app_dir in app_dirs:
        sql_files.append(os.path.join(app_dir, "%s.%s.sql" % (opts.model_name, backend_name)))
        sql_files.append(os.path.join(app_dir, "%s.sql" % opts.model_name))
    for sql_file in sql_files:
        if os.path.exists(sql_file):
            with io.open(sql_file, encoding=settings.FILE_CHARSET) as fp:
                output.extend(connection.ops.prepare_sql_script(fp.read(), _allow_fallback=True))
    return output

def __init__(self, params):
        params = params.copy()
        options = params.pop('OPTIONS').copy()
        options.setdefault('debug', settings.DEBUG)
        options.setdefault('file_charset', settings.FILE_CHARSET)
        libraries = options.get('libraries', {})
        options['libraries'] = self.get_templatetag_libraries(libraries)
        super(DjangoTemplates, self).__init__(params)
        self.engine = Engine(self.dirs, self.app_dirs, **options)

def __init__(self, params):
        params = params.copy()
        options = params.pop('OPTIONS').copy()
        options.setdefault('autoescape', True)
        options.setdefault('debug', settings.DEBUG)
        options.setdefault('file_charset', settings.FILE_CHARSET)
        libraries = options.get('libraries', {})
        options['libraries'] = self.get_templatetag_libraries(libraries)
        super(DjangoTemplates, self).__init__(params)
        self.engine = Engine(self.dirs, self.app_dirs, **options)

def custom_sql_for_model(model, style, connection):
    opts = model._meta
    app_dirs = []
    app_dir = apps.get_app_config(model._meta.app_label).path
    app_dirs.append(os.path.normpath(os.path.join(app_dir, 'sql')))

    # Deprecated location -- remove in Django 1.9
    old_app_dir = os.path.normpath(os.path.join(app_dir, 'models/sql'))
    if os.path.exists(old_app_dir):
        warnings.warn("Custom SQL location '<app_label>/models/sql' is "
                      "deprecated, use '<app_label>/sql' instead.",
                      RemovedInDjango19Warning)
        app_dirs.append(old_app_dir)

    output = []

    # Post-creation SQL should come before any initial SQL data is loaded.
    # However, this should not be done for models that are unmanaged or
    # for fields that are part of a parent model (via model inheritance).
    if opts.managed:
        post_sql_fields = [f for f in opts.local_fields if hasattr(f, 'post_create_sql')]
        for f in post_sql_fields:
            output.extend(f.post_create_sql(style, model._meta.db_table))

    # Find custom SQL, if it's available.
    backend_name = connection.settings_dict['ENGINE'].split('.')[-1]
    sql_files = []
    for app_dir in app_dirs:
        sql_files.append(os.path.join(app_dir, "%s.%s.sql" % (opts.model_name, backend_name)))
        sql_files.append(os.path.join(app_dir, "%s.sql" % opts.model_name))
    for sql_file in sql_files:
        if os.path.exists(sql_file):
            with io.open(sql_file, encoding=settings.FILE_CHARSET) as fp:
                output.extend(connection.ops.prepare_sql_script(fp.read(), _allow_fallback=True))
    return output

def get_template(self, template_name):
        for template_file in self.iter_template_filenames(template_name):
            try:
                with io.open(template_file, encoding=settings.FILE_CHARSET) as fp:
                    template_code = fp.read()
            except IOError:
                continue

            return Template(template_code)

        else:
            raise TemplateDoesNotExist(template_name)

def __init__(self, params):
        params = params.copy()
        options = params.pop('OPTIONS').copy()
        options.setdefault('debug', settings.DEBUG)
        options.setdefault('file_charset', settings.FILE_CHARSET)
        super(DjangoTemplates, self).__init__(params)
        self.engine = Engine(self.dirs, self.app_dirs, **options)