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Editing: historypack.cpython-310.pyc
o �]LbK � @ s� d dl mZ d dlZd dlmZmZ d dlmZmZ d dl m Z ddl m Z m Z mZ dZe�e�Zd Zd Ze�e�Zd Zd Zd ZdZdZd ZdZdZ dZ d Z G dd� de j �Z G dd� de j �Z!G dd� de j"�Z#dS )� )�absolute_importN)�hex�sha1nodeconstants)�pycompat�util)�hashutil� )�basepack� constants� shallowutils !20sQQII� s !20sQs !20s20s20s20sH�R � s .histidxs .histpack� � c @ s6 e Zd ZeZeZdd� Zd dd�Zdd� Zdd � ZdS ) �historypackstorec C s t |�S �N)� historypack��self�path� r �A/usr/lib/python3/dist-packages/hgext/remotefilelog/historypack.py�getpack0 s zhistorypackstore.getpackNc C sv | j D ]}z |j|||d�W S ty Y qw | �� D ]}z |j|||d�W S ty4 Y q w t||f��)N��known)�packs� getancestors�KeyError�refresh)r �name�noder �packr r r r 3 s � � z historypackstore.getancestorsc C sn | j D ]}z |�||�W S ty Y qw | �� D ]}z |�||�W S ty0 Y q w t||f��r )r � getnodeinfor r )r r r! r" r r r r# B s � � z historypackstore.getnodeinfoc C � t d|t|�f ��)Ns& cannot add to historypackstore (%s:%s)�� RuntimeErrorr �r �filenamer! �p1�p2�linknode�copyfromr r r �addQ � �zhistorypackstore.addr ) �__name__� __module__� __qualname__� INDEXSUFFIX� PACKSUFFIXr r r# r- r r r r r , s r c s� e Zd ZeZeZdgZ� fdd�Zdd� Zd dd�Zd d � Z d d d �Z d d� Z dd� Z dd� Z dd� Zdd� Zd dd�Zdd� Zdd � Zd d � Z� ZS ) r r c s t t| ��|� t| _t| _d S r )�superr �__init__� INDEXFORMAT2� INDEXFORMAT�INDEXENTRYLENGTH2�INDEXENTRYLENGTHr �� __class__r r r5 ] s zhistorypack.__init__c C sF g }|D ] \}}z| � ||� W q ty |�||f� Y qw |S r )� _findnoder �append)r �keys�missingr r! r r r � getmissingb s �zhistorypack.getmissingNc C s\ |r||v rg S | j |||d�}i }|D ]\}}}} } ||| | f||< q|s,t||f��|S )z�Returns as many ancestors as we're aware of. return value: { node: (p1, p2, linknode, copyfrom), ... } r )� _getancestorsr ) r r r! r � ancestors�results�ancnoder) r* r+ r, r r r r l s zhistorypack.getancestorsc C s | � ||�dd � S )Nr )r< )r r r! r r r r# � s zhistorypack.getnodeinfoc c s� � |d u rt � }| �|�}|\}}}}} |h} d} | |k rw| s!d S | �|| �\} } | t7 } | r6| t| �7 } | t }|| v rq| �|� | t }| t }|t j krY||vrY| � |� |t j krg||vrg| � |� |||| t | fV | |k s d S d S �Nr ) �set� _findsection� _readentry�PACKENTRYLENGTH�len�ANC_NODE�remove� ANC_P1NODE� ANC_P2NODEr �nullidr- � ANC_LINKNODE)r r r! r �sectionr( �offset�size�nodeindexoffset� nodeindexsize�pending�o�entryr, rD �p1node�p2noder r r rA � s2 � �zhistorypack._getancestorsc C sR | j }t�t|||t � �}d }|t }|dkr%|t7 }|||| � }||fS rE )�_data�struct�unpack� PACKFORMATrI � ANC_COPYFROM)r rR �datarX r, � copyfromlenr r r rH � s �zhistorypack._readentryc C r$ )Ns! cannot add to historypack (%s:%s)r% r' r r r r- � r. zhistorypack.addc C s� | j dkr#| �||�}|D ]\}}}}}||kr!|||||f S q n3| �|�} | dd � \} } | �|| | | t�} | d urVt�t| �\}} | �| �\} }| d d� |f S t d|t |�f ��)Nr r r s unable to find history for %s:%s) �VERSIONrA rG �_bisect�NODEINDEXENTRYLENGTHr\ r] �NODEINDEXFORMATrH r r )r r r! rB rD rY rZ r+ r, rQ rT rU rX rR r r r r< � s( �� �zhistorypack._findnodec C s� | j }t�|��� }t�|j|d |j� �d }| j}|| |j }| j }t � |d |j �D ]}|| |j } | |kr= nq.|} | �||| | j�} | sOt|��t�| j| �} | \} } }}}| j||tj � }t�d|�d }|tj7 }| j||| � }||kr�td||f ��||7 }t�d| j| | tj � �d }| tj7 } | j| | | � }| |7 } ||kr�td||f ��| t7 } | }|tj | t }|||||fS )Nr r � !Hs& found file name %s when looking for %s)�paramsr �sha1�digestr\ r] � fanoutstruct� fanoutprefix� _fanouttable� indexstart� _indexendr �xrange� fanoutcountrc r9 r r7 �_indexr � FILENAMESIZEr[ �ENTRYCOUNTSIZE)r r rg �namehash� fanoutkey�fanout�start�indexend�i�endrX �rawentry�xrR rS rT rU � rawnamelen� actualnamelen� actualname�filenamelength�nodelistoffset� nodelistsizer r r rG � sp ��� � � ��� ���zhistorypack._findsectionc C s� |}| j ||t � }| j ||t � }||kr!| j ||| � S ||kr.| j ||| � S ||| k rm||| d }||| | }| j ||t � } | |krZ| j ||| � S || kra|}n|| k rg|}||| k s4d S )Nr )rq � NODELENGTH) r r! rw rz �entrylen� origstart� startnode�endnode�mid�midnoder r r rc s& � zhistorypack._bisectc C s | D ] \}}|� | ||� qd S r )�markhistoryentry)r �ledger�optionsr( r! r r r � markledger" s �zhistorypack.markledgerc C sl |j �| g �}t| �}dd� |D �}t|| �dkr2| j|jvr4tj| jdd� tj| j dd� d S d S d S )Nc S s h | ] }|j r|j|jf�qS r )�historyrepackedr( r! ��.0�er r r � <setcomp>) s � �z&historypack.cleanup.<locals>.<setcomp>r T)� ignoremissing) �sources�getrF rJ r �createdr � unlinkpath� indexpath�packpath)r r� �entries�allkeys� repackedkeysr r r �cleanup& s � �zhistorypack.cleanupc c s* � | � � D ] \}}}}}}||fV qd S r )� iterentries)r �f�nr| r r r �__iter__2 s � �zhistorypack.__iter__c c s � d}|| j k r�| j}t�d|||tj � �d }|tj7 }|||| � }||7 }t�d|||t � �d }|t7 }t�|�D ]:}t�t |||t � �}|t 7 }||||t � }||t 7 }||t |t |t |t |fV | jt 7 _qB| �� || j k sd S d S )Nr rf r � !I)�datasizer[ r\ r] r rr rs r ro r^ rI r_ rK rM rN rP �_pagedin� freememory) r rR r` � filenamelenr( �revcountry rX r, r r r r� 6 sF � �� ��� � �zhistorypack.iterentriesr )r/ r0 r1 r2 r3 �SUPPORTED_VERSIONSr5 r@ r r# rA rH r- r< rG rc r� r� r� r� � __classcell__r r r: r r W s$ B r c sV e Zd ZdZeZeZdgZd� fdd� Zdd� Zdd� Z d� fd d � Z d d � Z � Z S )�mutablehistorypacka� A class for constructing and serializing a histpack file and index. A history pack is a pair of files that contain the revision history for various file revisions in Mercurial. It contains only revision history (like parent pointers and linknodes), not any revision content information. It consists of two files, with the following format: .histpack The pack itself is a series of file revisions with some basic header information on each. datapack = <version: 1 byte> [<filesection>,...] filesection = <filename len: 2 byte unsigned int> <filename> <revision count: 4 byte unsigned int> [<revision>,...] revision = <node: 20 byte> <p1node: 20 byte> <p2node: 20 byte> <linknode: 20 byte> <copyfromlen: 2 byte> <copyfrom> The revisions within each filesection are stored in topological order (newest first). If a given entry has a parent from another file (a copy) then p1node is the node from the other file, and copyfrom is the filepath of the other file. .histidx The index file provides a mapping from filename to the file section in the histpack. In V1 it also contains sub-indexes for specific nodes within each file. It consists of three parts, the fanout, the file index and the node indexes. The file index is a list of index entries, sorted by filename hash (one per file section in the pack). Each entry has: - node (The 20 byte hash of the filename) - pack entry offset (The location of this file section in the histpack) - pack content size (The on-disk length of this file section's pack data) - node index offset (The location of the file's node index in the index file) [1] - node index size (the on-disk length of this file's node index) [1] The fanout is a quick lookup table to reduce the number of steps for bisecting the index. It is a series of 4 byte pointers to positions within the index. It has 2^16 entries, which corresponds to hash prefixes [00, 01, 02,..., FD, FE, FF]. Example: the pointer in slot 4F points to the index position of the first revision whose node starts with 4F. This saves log(2^16) bisect steps. dataidx = <fanouttable> <file count: 8 byte unsigned> [1] <fileindex> <node count: 8 byte unsigned> [1] [<nodeindex>,...] [1] fanouttable = [<index offset: 4 byte unsigned int>,...] (2^16 entries) fileindex = [<file index entry>,...] fileindexentry = <node: 20 byte> <pack file section offset: 8 byte unsigned int> <pack file section size: 8 byte unsigned int> <node index offset: 4 byte unsigned int> [1] <node index size: 4 byte unsigned int> [1] nodeindex = <filename>[<node index entry>,...] [1] filename = <filename len : 2 byte unsigned int><filename value> [1] nodeindexentry = <node: 20 byte> [1] <pack file node offset: 8 byte unsigned int> [1] [1]: new in version 1. r c sD t t| �j|||d� i | _i | _i | _t| _t| _ t | _ t | _ d S )N)�version) r4 r� r5 �files�entrylocations� fileentriesr6 r7 r8 r9 re rd )r �uir� r� r: r r r5 � s zmutablehistorypack.__init__c C s< |pd}t �dt|��}| j�|g ��||||||f� d S )N� rf )r\ r" rJ r� � setdefaultr= )r r( r! r) r* r+ r, ra r r r r- � s �zmutablehistorypack.addc s2 t | j�D ]�}| j| }| j�� }dd� |D �� � fdd�}ttt�dd� |D �|���}| �dt � dt |��|t � d t |��f � t j t |� d }g }| j�|i �}|| } |D ]} | || < d � | } |�| � | t | �7 } q[d �|�} |t | �7 }| �| � ||f| j|< t�|��� } | | j| < qd S ) Nc S s i | ]}|d |�qS )r r r� r r r � <dictcomp>� s z-mutablehistorypack._write.<locals>.<dictcomp>c sD � | \}}}}}}g }|t jkr|�|� |t jkr |�|� |S r )r rO r= )r! r| r) r* �parents��entrymapr r � parentfunc� s z-mutablehistorypack._write.<locals>.parentfuncc s s � | ]}|d V qdS )r Nr r� r r r � <genexpr>� s � z,mutablehistorypack._write.<locals>.<genexpr>s %s%s%srf r� r s %s%s%s%s%s%sr� )�sortedr� �packfp�tell�list�reversedr � sortnodes�writerawr\ r" rJ r rr r� r� r= �joinr� r rh ri r� ) r r( r� � sectionstartr� � sortednodes� sectionlen� rawstrings� locationsrR r! �raw�rawdatar r� r �_write� sD ����� �zmutablehistorypack._writeNc s$ | j rd S | �� tt| �j|d�S )N)r� )�_closedr� r4 r� �close)r r� r: r r r� � s zmutablehistorypack.closec C s@ | j }| j}| j}| j}dd� t�| j�D �}t|�}t� d�}|| t |�| | } g } g } d} |D ]Y\} }}}| j | }t |�| }t� || ||| |�}| � t� tjt |��| � | tjt |� 7 } tt�|��D ]\}}| � t� |||�� | d7 } qm| t |�| 7 } | � |� q4t� d| �}d�| �| d�| � S )Nc s s. � | ]\}\}}t �|��� |||fV qd S r )r rh ri )r� r( rR rS r r r r� s � � �z1mutablehistorypack.createindex.<locals>.<genexpr>s !Qr r r� )r7 r9 re rd r � iteritemsr� r� r\ �calcsizerJ r� r" r= r �FILENAMESTRUCTrr r� )r � nodelocations� indexoffset�fileindexformat�fileindexlength�nodeindexformat�nodeindexlengthr� � indexlensizerT �fileindexentries�nodeindexentries� nodecountrt r( rR rS rU r{ r! �location� nodecountrawr r r � createindex sb � � ��� � � � ���z mutablehistorypack.createindex)r r ) r/ r0 r1 �__doc__r2 r3 r� r5 r- r� r� r� r� r r r: r r� ` s K 8r� )$� __future__r r\ �mercurial.noder r � mercurialr r �mercurial.utilsr � r r r r6 r� r8 r� re rd r^ rI rs r2 r3 rK rM rN rP r_ � basepackstorer r �mutablebasepackr� r r r r �<module> s4 +
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