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� Z d Z e j d � Z d e f d � � YZ d e j f d � � YZ d S( i����Ni ( t util( t compati ( t revision( t migration( t contextmanagers (?!__init__)(.*\.py)(c|o)?$s (?!__init__)(.*\.py)$s ([a-f0-9]+)\.py$s (upgrade|downgrade)_([a-z0-9]+)s \w+s %(rev)s_%(slug)ss ,|(?: +)t ScriptDirectoryc B sF e Z d Z e d d e d d � Z e d � � Z e j
d � � Z d � Z e
d � � Z e d d d d d d � � Z d d
d � Z d � Z d
� Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z e d � � Z d � Z d � Z d � Z! d e e d d d d � Z" d � Z# RS( sH Provides operations upon an Alembic script directory.
This object is useful to get information as to current revisions,
most notably being able to get at the "head" revision, for schemes
that want to test if the current revision in the database is the most
recent::
from alembic.script import ScriptDirectory
from alembic.config import Config
config = Config()
config.set_main_option("script_location", "myapp:migrations")
script = ScriptDirectory.from_config(config)
head_revision = script.get_current_head()
i( s utf-8c C s� | | _ | | _ | | _ | p$ d | _ | | _ | | _ t j | j � | _ t
j | t
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j d | � � n d S( Ni( sV Path doesn't exist: %r. Please use the 'init' command to create a new scripts folder.( t dirt
file_templatet version_locationst truncate_slug_lengtht
sourcelesst output_encodingR t RevisionMapt _load_revisionst revision_mapt ost accesst F_OKR t CommandError( t selfR R R R R
R ( ( sD /opt/alt/python27/lib/python2.7/site-packages/alembic/script/base.pyt __init__* s c C s9 | j } t | � d k r- t j d � � n | d Sd S( Ni s" Multiple version_locations presenti ( t _version_locationst lenR R ( R t loc( ( sD /opt/alt/python27/lib/python2.7/site-packages/alembic/script/base.pyt versions; s c C sa | j r8 g | j D]! } t j j t j | � � ^ q St j j t j j | j d � � f Sd S( NR ( R R t patht abspathR t coerce_resource_to_filenamet joinR ( R t location( ( sD /opt/alt/python27/lib/python2.7/site-packages/alembic/script/base.pyR C s ,c c s� | j r: g | j D] } t j j | � r | ^ q } n | j g } xT | D]L } xC t j | � D]2 } t j | | | � } | d k r� qc n | Vqc WqM Wd S( N(
R R R R t existsR t listdirt Scriptt _from_filenamet None( R t verst pathst file_t script( ( sD /opt/alt/python27/lib/python2.7/site-packages/alembic/script/base.pyR
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c C s� | j d � } | d
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k rW t | � } n | j d � } | r~ t j | � } n t t j | � d | j d t � d | d | j d � d k d | j d d � d | �S( s� Produce a new :class:`.ScriptDirectory` given a :class:`.Config`
instance.
The :class:`.Config` need only have the ``script_location`` key
present.
t script_locations0 No 'script_location' key found in configuration.R R R R
t trueR s utf-8N(
t get_main_optionR" R R t intt _split_on_space_commat splitR R t _default_file_template( t clst configR' R R ( ( sD /opt/alt/python27/lib/python2.7/site-packages/alembic/script/base.pyt from_config\ s$ c
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rn} t j t j | j d � � n Xd S( Nsg Requested range %(start)s:%(end)s does not refer to ancestor/descendant revisions along the same brancht startt ends� Multiple head revisions are present for given argument '%(head_arg)s'; please specify a specific target revision, '<branchname>@%(head_arg)s' to narrow to a specific head, or 'heads' for all headst head_argt headss( Can't locate revision identified by '%s'i ( R t RangeNotAncestorErrorR" t lowert upperR t raise_from_causeR R t
MultipleHeadst argumentt format_as_commaR4 t ResolutionErrort
RevisionErrort args(
R t ancestort multiple_headsR1 R2 t
resolutiont rnat mht ret err( ( sD /opt/alt/python27/lib/python2.7/site-packages/alembic/script/base.pyt _catch_revision_errors{ s2
t baseR4 c c sT | j d | d | � �6 x. | j j | | d t d t �D] } | Vq; WWd QXd S( s� Iterate through all revisions.
:param base: the base revision, or "base" to start from the
empty revision.
:param head: the head revision; defaults to "heads" to indicate
all head revisions. May also be "head" to indicate a single
head revision.
.. versionchanged:: 0.7.0 the "head" identifier now refers to
the head of a non-branched repository only; use "heads" to
refer to the set of all head branches simultaneously.
R1 R2 t inclusivet assert_relative_lengthN( RF R t iterate_revisionst Truet False( R RG t headt rev( ( sD /opt/alt/python27/lib/python2.7/site-packages/alembic/script/base.pyt walk_revisions� s c C s' | j � � | j j | � SWd QXd S( s� Return the :class:`.Script` instance with the given rev identifier,
symbolic name, or sequence of identifiers.
.. versionadded:: 0.7.0
N( RF R t
get_revisions( R t id_( ( sD /opt/alt/python27/lib/python2.7/site-packages/alembic/script/base.pyRP � s
c C s' | j � � | j j | � SWd QXd S( s� Return the :class:`.Script` instance with the given rev id.
.. seealso::
:meth:`.ScriptDirectory.get_revisions`
N( RF R t get_revision( R RQ ( ( sD /opt/alt/python27/lib/python2.7/site-packages/alembic/script/base.pyRR � s
c C sA | j � � | j j | � \ } } Wd QX| s5 d S| d Sd S( s[ Convert a symbolic revision, i.e. 'head' or 'base', into
an actual revision number.Ni ( RF R t _resolve_revision_numberR" ( R RQ RN t branch_name( ( sD /opt/alt/python27/lib/python2.7/site-packages/alembic/script/base.pyt as_revision_number� s
c C s | j j | | � S( s� Iterate through script revisions, starting at the given
upper revision identifier and ending at the lower.
The traversal uses strictly the `down_revision`
marker inside each migration script, so
it is a requirement that upper >= lower,
else you'll get nothing back.
The iterator yields :class:`.Script` objects.
.. seealso::
:meth:`.RevisionMap.iterate_revisions`
( R RJ ( R R7 R6 ( ( sD /opt/alt/python27/lib/python2.7/site-packages/alembic/script/base.pyRJ � s c C s* | j d d � � | j j � SWd QXd S( sG Return the current head revision.
If the script directory has multiple heads
due to branching, an error is raised;
:meth:`.ScriptDirectory.get_heads` should be
preferred.
:return: a string revision number.
.. seealso::
:meth:`.ScriptDirectory.get_heads`
R@ s} The script directory has multiple heads (due to branching).Please use get_heads(), or merge the branches using alembic merge.N( RF R t get_current_head( R ( ( sD /opt/alt/python27/lib/python2.7/site-packages/alembic/script/base.pyRV � s
c C s t | j j � S( sU Return all "versioned head" revisions as strings.
This is normally a list of length one,
unless branches are present. The
:meth:`.ScriptDirectory.get_current_head()` method
can be used normally when a script directory
has only one head.
:return: a tuple of string revision numbers.
( t listR R4 ( R ( ( sD /opt/alt/python27/lib/python2.7/site-packages/alembic/script/base.pyt get_heads s c C sF | j � } t | � d k r0 t j d � � n | r> | d Sd Sd S( s# Return the "base" revision as a string.
This is the revision number of the script that
has a ``down_revision`` of None.
If the script directory has multiple bases, an error is raised;
:meth:`.ScriptDirectory.get_bases` should be
preferred.
i s@ The script directory has multiple bases. Please use get_bases().i N( t get_basesR R R R" ( R t bases( ( sD /opt/alt/python27/lib/python2.7/site-packages/alembic/script/base.pyt get_base s c C s t | j j � S( s� return all "base" revisions as strings.
This is the revision number of all scripts that
have a ``down_revision`` of None.
.. versionadded:: 0.7.0
( RW R RZ ( R ( ( sD /opt/alt/python27/lib/python2.7/site-packages/alembic/script/base.pyRY % s c C s | j d d d | � �a | j j | | d t �} t | � } g t t | � � D] } t j j | j | � ^ qS SWd QXd S( NR? sF Destination %(end)s is not a valid upgrade target from current head(s)R2 t
implicit_base( RF R RJ RK RW t reversedR t
MigrationStept upgrade_from_script( R t destinationt current_revt revsR& ( ( sD /opt/alt/python27/lib/python2.7/site-packages/alembic/script/base.pyt
_upgrade_revs0 s
c C sa | j d d d | � �C | j j | | � } g | D] } t j j | j | � ^ q5 SWd QXd S( NR? sH Destination %(end)s is not a valid downgrade target from current head(s)R2 ( RF R RJ R R^ t downgrade_from_script( R R` Ra Rb R& ( ( sD /opt/alt/python27/lib/python2.7/site-packages/alembic/script/base.pyt _downgrade_revs= s
c C s� | j d d � ��| j | � } | j j | | d t �} g } | j | � pX d g } xz| D]r} | d k r� | j g | D]! } t j | j d t
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� } | j | � qb qb t j d | j t t � } | j | � qb qb W| SWd QXd S( NR@ sC Multiple heads are present; please specify a single target revisiont include_dependencies( ( RF RP R t filter_for_lineageRK R" t extendR t StampStepR RL t sett _get_descendant_nodest _get_ancestor_nodest intersectiont append( R R R4 t filtered_headst stepst destst destRM t descendantst ancestorst
todo_headst step( ( sD /opt/alt/python27/lib/python2.7/site-packages/alembic/script/base.pyt _stamp_revsI sD
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c C s t j | j d � d S( s� Run the script environment.
This basically runs the ``env.py`` script present
in the migration environment. It is called exclusively
by the command functions in :mod:`alembic.command`.
s env.pyN( R t load_python_fileR ( R ( ( sD /opt/alt/python27/lib/python2.7/site-packages/alembic/script/base.pyt run_env� s c C s" t j j t j j | j d � � S( Ns env.py( R R R R R ( R ( ( sD /opt/alt/python27/lib/python2.7/site-packages/alembic/script/base.pyt env_py_location� s c K s6 t j d t j j | � t j | | | j | � d S( Ns
Generating %s( R t statusR R R t template_to_fileR ( R t srcRr t kw( ( sD /opt/alt/python27/lib/python2.7/site-packages/alembic/script/base.pyt _generate_template� s c C s- t j d t j j | � t j | | � d S( Ns
Generating %s( R R{ R R R t shutilt copy( R R} Rr ( ( sD /opt/alt/python27/lib/python2.7/site-packages/alembic/script/base.pyt
_copy_file� s c C sE t j j | � } t j j | � sA t j d | t j | � n d S( Ns Creating directory %s( R R R R R R{ t makedirs( R R ( ( sD /opt/alt/python27/lib/python2.7/site-packages/alembic/script/base.pyt _ensure_directory� s
c K s@ | d k r d } n | j d d � � | j j | � }
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D]5 } | d k r�| j r�t j d | j � � q�q�Wn | rP| j � �j g g t j | � D] } | j j | � | f ^ q�D]* \ } } | | j k r8| n | j ^ q} Wd QXn | j t j j | j d
� | d t | � d t j t d
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D� � � d t j | � d t j | � d | d t j d | d k r�| n d | �t! j" | | � } | r,| j r,t j d | j | | j f � � n | j j# | � | S( s Generate a new revision file.
This runs the ``script.py.mako`` template, given
template arguments, and creates a new file.
:param revid: String revision id. Typically this
comes from ``alembic.util.rev_id()``.
:param message: the revision message, the one passed
by the -m argument to the ``revision`` command.
:param head: the head revision to generate against. Defaults
to the current "head" if no branches are present, else raises
an exception.
.. versionadded:: 0.7.0
:param splice: if True, allow the "head" version to not be an
actual head; otherwise, the selected head must be a head
(e.g. endpoint) revision.
:param refresh: deprecated.
RM R@ s{ Multiple heads are present; please specify the head revision on which the new revision should be based, or perform a merge.Ns" Duplicate head revisions specifiedi sA Multiple version locations present, please specify --version-paths7 Path %s is not represented in current version locationsse Revision %s is not a head revision; please specify --splice to create a new branch from this revisions script.py.makot up_revisiont
down_revisionc s s* | ] } | d k r | j n d Vq d S( N( R" R ( t .0t h( ( sD /opt/alt/python27/lib/python2.7/site-packages/alembic/script/base.pys <genexpr> s t
branch_labelst
depends_ont create_datet commat messages
empty messages� Version %s specified branch_labels %s, however the migration file %s does not have them; have you upgraded your script.py.mako to include the 'branch_labels' section?($ R" RF R RP R Rj R R t datetimet nowR R R t dirnameR t normpathR R R� t _rev_patht is_headR t to_listRR R� R R R t strt tuple_rev_as_scalart tuplet to_tupleR; R t
_from_patht add_revision( R t revidR� RM t refresht spliceR� t version_pathR� R~ R4 R� t norm_patht vers_pathR t depRN R& ( ( sD /opt/alt/python27/lib/python2.7/site-packages/alembic/script/base.pyt generate_revision� sr
h c C s� d j t j | p d � � j � } t | � | j k r] | | j j d d � d d } n d | j i | d 6| d 6| j d 6| j d 6| j
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6} t j j | | � S( Nt _t i i s %s.pyRN t slugt yeart montht dayt hourt minutet second( R t _slug_ret findallR6 R R t rsplitR R� R� R� R� R� R� R R ( R R t rev_idR� R� R� t filename( ( sD /opt/alt/python27/lib/python2.7/site-packages/alembic/script/base.pyR� s $$
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� � Z RS( s� Represent a single revision file in a ``versions/`` directory.
The :class:`.Script` instance is returned by methods
such as :meth:`.ScriptDirectory.iterate_revisions`.
c C st | | _ | | _ t t | � j | | j d t j t | d d � d d �d t j t | d d � d d ��d S( NR� t defaultt dependenciesR� ( ( (
t moduleR t superR R R� R R� t getattrR" ( R R� R� R ( ( sD /opt/alt/python27/lib/python2.7/site-packages/alembic/script/base.pyR 6 s c C s t j d | j � d S( s) Return the docstring given in the script.s
i ( RD R, t longdoc( R ( ( sD /opt/alt/python27/lib/python2.7/site-packages/alembic/script/base.pyt docH s c C sN | j j } | rF t | j d � r< | j | j j � } n | j � Sd Sd S( s) Return the docstring given in the script.t _alembic_source_encodingR� N( R� R� t hasattrt decodeR� t strip( R R� ( ( sD /opt/alt/python27/lib/python2.7/site-packages/alembic/script/base.pyR� N s
c C s7 d | j | j r d n d | j r* d n d | j r< d n d f } | j ri | d | j � f 7} n | d | j � f 7} | j r� | d t j | j � 7} n | j r� | d t j | j � 7} n | j r� | d
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s (head)R� s (branchpoint)s
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c s s | ] } d | Vq d S( s %sN( ( R� t para( ( sD /opt/alt/python27/lib/python2.7/site-packages/alembic/script/base.pys <genexpr>w s ( R R� t is_branch_pointt is_merge_pointt _format_down_revisionR� R R; t nextrevR� R R R� t
splitlines( R t entry( ( sD /opt/alt/python27/lib/python2.7/site-packages/alembic/script/base.pyt log_entryZ s. c C sS d | j � | j | j r! d n d | j r3 d n d | j rE d n d | j f S( Ns %s -> %s%s%s%s, %ss (head)R� s (branchpoint)s
(mergepoint)( R� R R� R� R� R� ( R ( ( sD /opt/alt/python27/lib/python2.7/site-packages/alembic/script/base.pyt __str__} s c C s) | j } | rY | j r@ d | j � t j | j � | f } qY d | j � | f } n | r� | j r� | d t j | j � 7} n | s� | r� | d | j r� d n d | j r� | j r� d n d f 7} n | r | d | j r� d n d | j r� d n d f 7} n | r%| d
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| | � � S( Ni i t ct oR s� Could not determine revision id from filename %s. Be sure the 'revision' variable is declared inside the script (please see 'Upgrading from Alembic 0.1 to 0.2' in the documentation).( R
t _sourceless_rev_filet matcht _only_source_rev_fileR" t groupRL R R R R R Rx R� t _legacy_revR R R (
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contextlibR t compileR� R� R� t _mod_def_reR� R- R+ t objectR t RevisionR ( ( ( sD /opt/alt/python27/lib/python2.7/site-packages/alembic/script/base.pyt <module> s& � �