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:param config: a :class:`.Config` object.
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�READMENz%s - %sz1
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alembic init --template generic ./scripts) � print_stdout�os�listdir�get_template_directory�open�path�join�next�rstrip)r �tempname�readme�synopsis� r �H/home/arjun/projects/env/lib/python3.10/site-packages/alembic/command.py�list_templates s
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|�d�fi | j �� dS )aj Initialize a new scripts directory.
:param config: a :class:`.Config` object.
:param directory: string path of the target directory
:param template: string name of the migration environment template to
use.
:param package: when True, write ``__init__.py`` files into the
environment location as well as the versions/ location.
z,Directory %s already exists and is not emptyzNo such template %rzCreating directory N�versionszalembic.ini.makozFile z already exists, skipping)�script_locationz __init__.pyzAdding �wz9Please edit configuration/connection/logging settings in z before proceeding.)r �access�F_OKr r � CommandErrorr r r �status�abspath�messaging_opts�makedirsr �config_file_name�msg�_generate_template�isfile�
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Optional[str]r �sql�splice� branch_label�Optional[_RevIdType]� version_path�rev_id�
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|�dkry|d S |S )a� Create a new revision file.
:param config: a :class:`.Config` object.
:param message: string message to apply to the revision; this is the
``-m`` option to ``alembic revision``.
:param autogenerate: whether or not to autogenerate the script from
the database; this is the ``--autogenerate`` option to
``alembic revision``.
:param sql: whether to dump the script out as a SQL string; when specified,
the script is dumped to stdout. This is the ``--sql`` option to
``alembic revision``.
:param head: head revision to build the new revision upon as a parent;
this is the ``--head`` option to ``alembic revision``.
:param splice: whether or not the new revision should be made into a
new head of its own; is required when the given ``head`` is not itself
a head. This is the ``--splice`` option to ``alembic revision``.
:param branch_label: string label to apply to the branch; this is the
``--branch-label`` option to ``alembic revision``.
:param version_path: string symbol identifying a specific version path
from the configuration; this is the ``--version-path`` option to
``alembic revision``.
:param rev_id: optional revision identifier to use instead of having
one generated; this is the ``--rev-id`` option to ``alembic revision``.
:param depends_on: optional list of "depends on" identifiers; this is the
``--depends-on`` option to ``alembic revision``.
:param process_revision_directives: this is a callable that takes the
same form as the callable described at
:paramref:`.EnvironmentContext.configure.process_revision_directives`;
will be applied to the structure generated by the revision process
where it can be altered programmatically. Note that unlike all
the other parameters, this option is only available via programmatic
use of :func:`.command.revision`
� r@ r rB r? rC rD rF rG rH )rI �revision_environmentTz7Using --sql with --autogenerate does not make any sensec � � � | |� g S �N��run_autogenerate��rev�context��revision_contextr r �retrieve_migrations� � z%revision.<locals>.retrieve_migrationsc rN rO )�run_no_autogeneraterR rU r r rW � rX ziUsing --sql with the revision command when revision_environment is not configured does not make any sense��fn�as_sql�
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d � dS ) z�Check if revision command with autogenerate has pending upgrade ops.
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.. versionadded:: 1.9.0
NTFr? rL c rN rO rP rR rU r r rW rX z"check.<locals>.retrieve_migrationsrZ ���z!New upgrade operations detected: z#No new upgrade operations detected.)r r` ra rb rc r
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�rv � revisionsr �Optional[Script]c C s� t �| �}d| i}t�| �d��}|r4dd� }t| ||d|d�� |�� W d � n1 s/w Y |j|p;t�� |fd||d �|��S )
a{ Merge two revisions together. Creates a new migration file.
:param config: a :class:`.Config` instance
:param message: string message to apply to the revision
:param branch_label: string label name to apply to the new revision
:param rev_id: hardcoded revision identifier instead of generating a new
one.
.. seealso::
:ref:`branches`
r rM c S s g S rO r rR r r r �nothingP s zmerge.<locals>.nothingF)r[ r\ r] NT)�refreshr? �
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��� W d � dS 1 s<w Y dS )ad Upgrade to a later version.
:param config: a :class:`.Config` instance.
:param revision: string revision target or range for --sql mode
:param sql: if True, use ``--sql`` mode
:param tag: an arbitrary "tag" that can be intercepted by custom
``env.py`` scripts via the :meth:`.EnvironmentContext.get_tag_argument`
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"�r� c s� t �| ��d}d� v r|st�d��� �dd�\}� n|r"t�d��� �fdd�}t| �|||� |d��
��� W d � dS 1 sDw Y dS ) af Revert to a previous version.
:param config: a :class:`.Config` instance.
:param revision: string revision target or range for --sql mode
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method.
Nr r� r� z/downgrade with --sql requires <fromrev>:<torev>c r� rO )�_downgrade_revsrR r� r r � downgrade� r� z downgrade.<locals>.downgrader� r� )r rm rB r~ r� r� r r� r r� � s,
��
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��� W d � dS 1 s'w Y dS ��|�D ]}� �|j� q3dS )z�Show the revision(s) denoted by the given symbol.
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get_revisionsr � log_entry�rS rT �sc�r r9 r r � show_current� s zshow.<locals>.show_current�r[ N)r r` r
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"��r� � rev_range�verbose�indicate_currentc s� t �| �}|dur d|vrt�d��|�� �d�\}}nd }}t�| �d��p)�}d ��fdd� � � fdd �}|d
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ksB|rK|| |||� dS � | |||� dS ) z�List changeset scripts in chronological order.
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Nr z9History range requires [start]:[end], [start]:, or :[end]rM r c sH |j |pd|pdd�D ]}� r|j|v |_| �|j�dddd�� q d S )N�base�heads)r� r? T)r� �include_branches� include_doc�include_parents)�walk_revisionsrm �_db_current_indicatorr �
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r� c C sL t �| �}|r
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r� TF)r� �tree_indicatorsN)r r` r� � get_headsr r� )r r� �resolve_dependenciesr9 r� rS r r r r� s
���r� c s` t �| ����� D ]$� � jr-| �d� j�dd�d�� �fdd��fdd�� jD �D ��� q dS ) zShow current branch points.
:param config: a :class:`.Config` instance.
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z%s
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c 3 s6 � | ]}d dt t� j�� |jdd�d�f V qdS )z%s -> %s� FT)r� r� N)rh r# rm r� )r^ �rev_obj)r� r� r r � <genexpr>D s � ����
�zbranches.<locals>.<genexpr>c 3 s � | ]}� � |�V qd S rO )� get_revision)r^ rS �r9 r r r� L s �
�N)r r` r� �is_branch_pointr r� r �nextrev)r r� r )r� r9 r� r �branches6 s
�����r� c sX t �� ��� ��fdd�}t� �|dd��
��� W d � dS 1 s%w Y dS )z�Display the current revision for a database.
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c s@ �r� � dt�|jjj�� ��| �D ]
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s� t �| ��|r5g � d}t�|�D ]#}d|v r.|�dd�\}}||kr.|du r)|}nt�d��� �|� qnt�|�� � �fdd�}t| �|||rJ|ndt�� �||d��
�� � W d � dS 1 sdw Y dS )au 'stamp' the revision table with the given revision; don't
run any migrations.
:param config: a :class:`.Config` instance.
:param revision: target revision or list of revisions. May be a list
to indicate stamping of multiple branch heads.
.. note:: this parameter is called "revisions" in the command line
interface.
:param sql: use ``--sql`` mode
:param tag: an arbitrary "tag" that can be intercepted by custom
``env.py`` scripts via the :class:`.EnvironmentContext.get_tag_argument`
method.
:param purge: delete all entries in the version table before stamping.
Nr r� zMStamp operation with --sql only supports a single starting revision at a timec s �� t�� �| �S rO )� _stamp_revsr �to_tuplerR ��destination_revsr9 r r �do_stamp� s zstamp.<locals>.do_stamp)r[ r\ r� r� r~ r� )
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� �� W d � dS 1 s&w Y dS � �|�}|s;t�d| ��|D ] }|sCJ �t�|j� q=dS )zEdit revision script(s) using $EDITOR.
:param config: a :class:`.Config` instance.
:param rev: target revision.
r� c s. | st �d��� �| �D ]}t �|j� q g S )NzNo current revisions)r r. r� �open_in_editorr r� r� r r � edit_current� s
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"�
��r� c C sP t �| �}dd� }t| |||d��
|�� W d � dS 1 s!w Y dS )z�Create the alembic version table if it doesn't exist already .
:param config: a :class:`.Config` instance.
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.. versionadded:: 1.7.6
c S s |� � g S rO )�_ensure_version_tablerR r r r �do_ensure_version� s z)ensure_version.<locals>.do_ensure_version)r[ r\ Nr� )r rB r9 r� r r r �ensure_version� s
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