versatileimagefield/mixins.py
def delete_matching_files_from_storage(self, root_folder, regex):
        """
        Delete files in `root_folder` which match `regex` before file ext.

        Example values:
            * root_folder = 'foo/'
            * self.name = 'bar.jpg'
            * regex = re.compile('-baz')

            Result:
                * foo/bar-baz.jpg <- Deleted
                * foo/bar-biz.jpg <- Not deleted
        """
        if not self.name:   # pragma: no cover
            return
        try:
            directory_list, file_list = self.storage.listdir(root_folder)
        except OSError:   # pragma: no cover
            pass
        else:
            folder, filename = os.path.split(self.name)
            basename, ext = os.path.splitext(filename)
            for f in file_list:
                if not f.startswith(basename) or not f.endswith(ext):   # pragma: no cover
                    continue
                tag = f[len(basename):-len(ext)]
                assert f == basename + tag + ext
                if regex.match(tag) is not None:
                    file_location = os.path.join(root_folder, f)
                    self.storage.delete(file_location)
                    cache.delete(
                        self.storage.url(file_location)
                    )
                    print(
                        "Deleted {file} (created from: {original})".format(
                            file=os.path.join(root_folder, f),
                            original=self.name
                        )
                    )
def delete_matching_files_from_storage(self, root_folder, regex):
        """
        Delete files in `root_folder` which match `regex` before file ext.

        Example values:
            * root_folder = 'foo/'
            * self.name = 'bar.jpg'
            * regex = re.compile('-baz')

            Result:
                * foo/bar-baz.jpg <- Deleted
                * foo/bar-biz.jpg <- Not deleted
        """
        if not self.name:   # pragma: no cover
            return
        try:
            directory_list, file_list = self.storage.listdir(root_folder)
        except OSError:   # pragma: no cover
            pass
        else:
            folder, filename = os.path.split(self.name)
            basename, ext = os.path.splitext(filename)
            for f in file_list:
                if not f.startswith(basename) or not f.endswith(ext):   # pragma: no cover
                    continue
                tag = f[len(basename):-len(ext)]
                assert f == basename + tag + ext
                if regex.match(tag) is not None:
                    file_location = os.path.join(root_folder, f)
                    self.storage.delete(file_location)
                    cache.delete(
                        self.storage.url(file_location)
                    )
                    print(
                        "Deleted {file} (created from: {original})".format(
                            file=os.path.join(root_folder, f),
                            original=self.name
                        )
                    )
Delete files in `root_folder` which match `regex` before file ext.

        Example values:
            * root_folder = 'foo/'
            * self.name = 'bar.jpg'
            * regex = re.compile('-baz')

            Result:
                * foo/bar-baz.jpg <- Deleted
                * foo/bar-biz.jpg <- Not deleted