[EDIT] FILE: module_base.cpython-36.opt-1.pyc
3 �ft`�� � @ s� d dl mZ d dlZd dlZd dlZd dlZd dlZd dl m Z d dl m Z d dl mZmZmZ d dlZejjjZejjjZejjjZejjjZed�Z ed�Z dd � Z G d d � d e �Z d d � Z!dS )� )� OrderedDictN)� EnableMultipleStreamsException)�logger)�_�P_�ucdz6 Hint: [d]efault, [e]nabled, [x]disabled, [i]nstalledz@ Hint: [d]efault, [e]nabled, [x]disabled, [i]nstalled, [a]ctivec C s | j � S )N)�getName)�profile� r �!/usr/lib/python3.6/module_base.py�_profile_comparison_key' s r c @ s e Zd Zdd� Zdd� Zdd� ZdBdd �ZdCd d �Zd d � Zdd� Z dd� Z dd� Z dd� Z dd� Z dDdd�Zdd� Zd d � Zd d � Zd d!� Zd"d#� ZdEd%d&�Zd'd(� Zd)d*� Zd+d,� ZdFd-d.�Zd/d0� Zed1d2� �Zd3d4� Z d5d6� Z d7d8� Z d9d:� Z d;d<� Z d=d>� Z!d?d@� Z"dAS )G� ModuleBasec C s || _ d S )N)�base)�selfr r r r �__init__. s zModuleBase.__init__c C sn | j |�\}}}}x8|j� D ],\}\}}|jr tjtd�j|j|j�� q W |sX|sX|rjtj j |||d��d S )Nz%Ignoring unnecessary profile: '{}/{}')�no_match_group_specs�error_group_specs�module_depsolv_errors) �!_resolve_specs_enable_update_sack�itemsr r �infor �format�name�dnf� exceptions� MarkingErrors) r � module_specs�no_match_specs� error_specs� solver_errors� module_dicts�spec�nsvcap� module_dictr r r �enable2 s zModuleBase.enablec C s, | j |t�\}}|s|r(tjj||d��d S )N)r r )�_modules_reset_or_disable�STATE_DISABLEDr r r )r r r r r r r �disable? s zModuleBase.disableTc s� � j |�\}}}}tj}i }t� } d} �xt|j� D �]f\} \} } �xV| j� D �]H\}}�x<|j� D �].\}}� fdd�|D �}|s�tjtd�j| ||�� |j | � qbg }� j |�}|j � |kr�td�}tj |j|j � |�� d} | j�rd|j|j| j�� |�s(|j� }|�r>djtdd� |D ���}td �j| |||�}ntd �j| �}tj|� |j | � qbnĈ jjj||�}|�s�|j� }|�r�djtd d� |D ���}td �j|||�}ntd �j||�}tj|� |j | � xNt|�D ]B}|j|�}|�stjtd�j|||�� |j | � |j|� �q�W xJ|D ]B}� jjj||j� � x&|j� D ]}|j|t� �j| � �qPW �q.W x |D ]} | j| j � � �qzW qbW qLW q2W | �r�t j j td���� j | ||�\} } | �r�|j| � |�s�|�s�|�r�t j j!|||d��d S )NFc s" g | ]}� j jj|j� �r|�qS r )r �_moduleContainer�isModuleActive�getId)�.0�x)r r r � <listcomp>S s z&ModuleBase.install.<locals>.<listcomp>zAAll matches for argument '{0}' in module '{1}:{2}' are not activezDInstalling module '{0}' from Fail-Safe repository {1} is not allowedTz, c S s g | ] }|j � �qS r )r )r+ r r r r r- g s zKUnable to match profile for argument {}. Available profiles for '{}:{}': {}z'Unable to match profile for argument {}c S s g | ] }|j � �qS r )r )r+ r r r r r- w s z<No default profiles for module {}:{}. Available profiles: {}z No profiles for module {}:{}z0Default profile {} not available in module {}:{}z:Installing module from Fail-Safe repository is not allowed)r r r )"r �hawkey�MODULE_FAIL_SAFE_REPO_NAME�setr r �errorr r �append� _get_latest� getRepoID�critical� getNameStreamr �extend� getProfiles�join�sortedr r( �getDefaultProfiles�installr � getContent� setdefault�add�update� getArtifactsr r �Error�_install_profiles_internalr ) r r �strictr r r r �fail_safe_repo� install_dict�install_set_artifacts�fail_safe_repo_usedr! r" � moduledictr � streamdict�stream� module_list�install_module_list�profiles� latest_module�msg�available_profiles� profile_namesZprofiles_stringsr �module_profiles�pkg_name�module�__�profiles_errorsr )r r r< F s� zModuleBase.installc . s� � j |�\}}}t� }t� }ddh}x�|j� D ]�\} \} } x�| j� D ]x} xr� jjj| dddd�D ]X} � jjj| �r`xD| j� D ]8}|j dd�d }||kr�q||j dd�d }|j |� q|W q`W qDW q.W � j � }� j |�}|r�|j |� tj}i }t� }d }� jjj� }�x^|j� D �]P\} \} } �x>| j� D �]0\} }�x"|j� D �]\}}� fd d �|D �}|�s�tjtd �j| | |�� |j| � �q@g } � j|�} | j� |k�r�td �} tj| j| j� |�� d}| j�rJ| j | j| j�� | �s�| j� } | �r"dj t dd � | D ���} td�j| | || �} ntd�j| �} tj| � |j| � �q@nT| |k�r�xH|| D ]<}!| j|!�}"|"�s�tj td�j|!| |�� �q^| j |"� �q^W xJ| D ]B}!� jjj | |!j � � x&|!j!� D ]}|j"|t� �j | � �q�W �q�W xh|D ]`} | j� }#|j#|#� xF|#D ]>}|j dd�d }||k�r.�q |j dd�d }|j |� �q W �q�W �q@W �q*W �qW |�r|t$j%j&td���� j'|||�\}$}%|%�r�|j |%� t� }&|&j#|� |&j#|� � jj(j� j)dd�}'� jj(j� j)ddgd�j*� }(x�|&D ]�}|(j+|d�})|)j,� }*|*�s�q�|)j-� }+|+�sJtj td�j|�� ||k�r�|'j.|)�}'�q�|)j/|$�},|,�r^|,})t$j0j1� jj(�}-|-j|)d� � jj2j3|-d� �q�W � jj4|'� |�s�|�s�|�r�t$j%j5|||d��d S ) N�nosrc�src� �.� �-� r Fc s" g | ]}� j jj|j� �r|�qS r )r r( r) r* )r+ r, )r r r r- � s z(ModuleBase.switch_to.<locals>.<listcomp>z8No active matches for argument '{0}' in module '{1}:{2}'zDInstalling module '{0}' from Fail-Safe repository {1} is not allowedTz, c S s g | ] }|j � �qS r )r )r+ r r r r r- � s zKUnable to match profile for argument {}. Available profiles for '{}:{}': {}z'Unable to match profile for argument {}zEInstalled profile '{0}' is not available in module '{1}' stream '{2}'z:Installing module from Fail-Safe repository is not allowed)�empty)� arch__neq)r z9No packages available to distrosync for package name '{}')�pkg)�select)r r r )6�_resolve_specs_enabler0 r �keysr r( �queryr) rA �rsplitr? � _update_sack�_enable_dependenciesr7 r. r/ ZgetRemovedProfilesr r1 r r r2 r3 r4 r5 r6 r r8 r9 r: Zwarningr< r r= r> r@ r r rB rC �sack�filterm�apply�filter� installed� available�union� intersection�selector�Selector�_goalZ distupgrade�_remove_if_unneededr ).r r rD r r r Znew_artifacts_namesZactive_artifacts_namesZ src_archesr! r" rI r rU �artifact�archrT r �dependency_error_specrE rF rG rH Zremoved_profilesrJ rK rL rM rN rO rP rQ rR r rS � artifacts�install_base_queryrW Z all_namesZ remove_query�base_no_source_queryre rm rn Zonly_new_module�sltrr )r r � switch_to� s� ( zModuleBase.switch_toc C s( | j |t�\}}|r$tjj||d��d S )N)r r )r% � STATE_UNKNOWNr r r )r r r r r r r �reset s zModuleBase.resetc s, g }t j}d}� jjj� jddgd�j� }�x�|D �]�}� j|�\}}|sV|j|� q2� fdd�|D �} | s�t j t d�j |�� q2� j | |d�} t� } �x | j� D �]\} } �x| j� D ]�\}}| j� j||�� � j|�}|j� |k�r t d�}t j|j |j� |�� d }|j�rH|j|j�}|�s(q�x�|D ]}| j|j� � �q.W q�x |j� D ]}| j|j� � �qRW xD|j� D ]8}t j|�}x&|jt j gd �D ]}| j |j � �q�W �qtW q�W q�W | �s�t j t d �j |�� |j | d �}|r2t j!j"� jj�}|j|d � � jj#j$|d� q2W |�r(t j%j&t d���|S )NFrY rX )r` c s" g | ]}� j jj|j� �r|�qS r )r r( r) r* )r+ r, )r r r r- 3 s z&ModuleBase.upgrade.<locals>.<listcomp>z Unable to resolve argument {}zCUpgrading module '{0}' from Fail-Safe repository {1} is not allowedT)Zformsz&Unable to match profile in argument {})r )ra )rb z9Upgrading module from Fail-Safe repository is not allowed)'r. r/ r ri re rj rk � _get_modulesr2 r r1 r r � _create_module_dict_and_enabler0 r r@ �)_get_package_name_set_and_remove_profilesr3 r4 r5 r6 r r8 r= rA �SubjectZget_nevra_possibilitiesZ FORM_NEVRAr? r rl r rq rr rs �upgrader rB )r r r rE rH rz r! rL r" Zupdate_module_listr# Zupgrade_package_setr rJ rK �module_list_from_dictrO rP � profiles_setr ru �subjZ nevra_objre r{ r )r r r� % sb zModuleBase.upgradec C s� g }t � }x�|D ]�}| j|�\}}|s2|j|� q| j||d�}g }x>|j� D ]2\} } x(| j� D ] \} } |j| j| |d�� q`W qNW |s�tjt d�j |�� |j |� qW |r�| j j j� } |j| �}|r�| j jj� j� j|d�}|r�| j j|� |S )NFTz&Unable to match profile in argument {})r )r0 r r2 r� r r7 r� r r1 r r r@ r r( ZgetInstalledPkgNames� differenceri re rm rj rt )r r r Zremove_package_setr! rL r" r# Zremove_packages_namesr rJ rK r� Zkeep_pkg_namesre r r r �remove_ s0 zModuleBase.removec C s | j |�S )N)r )r � module_specr r r � get_modules| s zModuleBase.get_modulesc C s� t j|�}x�|j� D ]�}|jr$|jnd}|jr4|jnd}d}|jrH|jnd}|jrX|jnd}|jrv|jdkrvt|j�}| j j j |||||�} | r| |fS qW f d fS )NrZ r\ ���) r. r� Znsvcap_possibilitiesr rK �contextrv �version�strr r( re ) r r� r� r" r rK r� r� rv �modulesr r r r � s zModuleBase._get_modulesc C s> d }|r:|d }x(|dd � D ]}|j � |j � kr |}q W |S )Nr r\ )Z getVersionNum)r rL �latestrU r r r r3 � s zModuleBase._get_latestc C sv i }x.|D ]&}|j |j� i �j |j� g �j|� q W �x:|j� D �],\}}| jjj|�}t|�dk�rF|t kr�|t kr�|t kr�dj t |j� tj| jjj�d��} td�j|t|�| |d�} t|| ��|t kr�| jjj|�} n| jjj|�} | s�| |k�rt|��xjt |j� �D ]0} | | k�r8|�r| jjj|| � �q|| = �qW q@|r@x"|j� D ]} | jjj|| � �qTW q@W |S )Nr\ z', ')�keyz�Argument '{argument}' matches {stream_count} streams ('{streams}') of module '{module}', but none of the streams are enabled or default)ZargumentZ stream_countZstreamsrU )r> r � getStreamr2 r r r( ZgetModuleState�len� STATE_DEFAULT� STATE_ENABLEDr& r9 r: rd � functools� cmp_to_keyri Zevr_cmpr r r ZgetEnabledStream�getDefaultStreamr$ ) r rL r! r$ � moduleDictrU Z moduleName� streamDictZ moduleStateZ streams_strrP rK r� r r r r� � s> " z)ModuleBase._create_module_dict_and_enablec C s� g }g }i }x�|D ]�}| j |�\}}|s4|j|� qy | j||d�}||f||< W q ttfk r� } z2|j|� tjt| �� tjtd�j |�� W Y d d } ~ X qX qW |||fS )NTz Unable to resolve argument {}) r r2 r� � RuntimeErrorr r r1 r r r ) r r r � error_specr r! rL r" r# �er r r rc � s *z ModuleBase._resolve_specs_enablec C s� dd� | j jj� D �}y4| j jj| j j|| j jj| j jjd| j jj d�}W n4 t j k r~ } zt j jt|���W Y d d }~X nX |S )Nc S s g | ]}|j r|j�qS r )�module_hotfixes�id)r+ �ir r r r- � s z+ModuleBase._update_sack.<locals>.<listcomp>T)Z update_onlyZ debugsolver)r �repos� iter_enabledri Zfilter_modulesr( �confZ installrootZmodule_platform_idZ debug_solverr. � Exceptionr r rB r )r � hot_fix_reposr r� r r r rg � s "zModuleBase._update_sackc C s� g }x�|j � D ]�\}\}}x�|j� D ]�}xz|j� D ]n}y| jjjtjj|�� W q2 tk r� } z2|j |� t j t |�� t j t d�j|�� W Y d d }~X q2X q2W q$W qW |S )Nz Unable to resolve argument {})r �valuesr r( ZenableDependencyTree�libdnfrU ZVectorModulePackagePtrr� r2 r r1 r r r ) r r r� r! r" r� r� r� r� r r r rh � s 2z ModuleBase._enable_dependenciesc C s< | j |�\}}}| j� }| j|�}|r0|j|� ||||fS )N)rc rg rh r7 )r r r r� r r rw r r r r � s z,ModuleBase._resolve_specs_enable_update_sackc C s� g }x�|D ]�}| j |�\}}|s@tjtd�j|�� |j|� q |js^|js^|js^|j s^|j rrtj td�j|�� t � }x|D ]}|j |j� � q~W x8|D ]0} |tkr�| jjj| � |tkr�| jjj| � q�W q W | j� } || fS )Nz Unable to resolve argument {}zMOnly module name is required. Ignoring unneeded information in argument: '{}')r r r1 r r r2 rK r� r� rv r r r0 r? r r} r r( r~ r& r' rg ) r r Zto_stater r! rL r" Z module_namesrU r r r r r r% � s( z$ModuleBase._modules_reset_or_disableFc C s� t � }| j|�}t | jjj|j� ��}|s0t � S |jr�|j|j�}|sLt � S x�|D ]6}|j� |krR|rz| jjj||j� � |j |j � � qRW nDxB|D ]:} |r�| jjj|| � x |j| �D ]}|j |j � � q�W q�W |S )N) r0 r3 r r( �getInstalledProfilesr r r8 Z uninstallr@ r= ) r rL r" r� Zpackage_name_setrO Zinstalled_profiles_stringsr� r Zprofile_stringr r r r� s* z4ModuleBase._get_package_name_set_and_remove_profilesc C s� t � }x�|D ]�}| j|�\}}|s8tjtd�j|�� q |jrXtjtd�j|j|j�� xl|D ]d}t� }|j � |d< x8t |j � t d�D ]$}dj dd� |j� D ��||j� < q�W |j| j|�j� � q^W q W dj t |��S ) Nz Unable to resolve argument {}z%Ignoring unnecessary profile: '{}/{}'�Name)r� � c S s g | ]}|�qS r r )r+ ZpkgNamer r r r- 5 s z1ModuleBase._get_info_profiles.<locals>.<listcomp>z )r0 r r r r r r r r �getFullIdentifierr: r8 r r9 r= r r? �_create_simple_table�toString) r r �outputr� rL r" rU �linesr r r r �_get_info_profiles# s" z ModuleBase._get_info_profilesc C s� | j jj|j� �}|j� }d}xTt|td�D ]D}|dj|j� |j� |krLdnd�7 }||j� |krj|rjdnd7 }q,W |d d� S ) NrZ )r� z{}{}z [d]z [i], z, r^ ���)r r( r� r r8 r: r r )r � modulePackage�default_profiles� enabled_strZinstalled_profilesrQ � profiles_strr r r r �_profile_report_formatter: s z$ModuleBase._profile_report_formatterc C s |j � jdd�S )Nr� � )�strip�replace)r Zsummaryr r r �_summary_report_formatterF s z$ModuleBase._summary_report_formatterc C s� d}d}d}|j � | jjj|j� �kr*d}| jjj|�rJ|s@d}|d7 }n | jjj|�rh|s`d}|d7 }|r�| jjj|�r�|s�d}|d7 }|||fS )NrZ z [d]r� z[e]z[x]z[a])r� r r( r� r Z isEnabledZ isDisabledr) )r r� � markActive� default_strr� � disabled_strr r r �_module_strs_formatterI s& z!ModuleBase._module_strs_formatterc C s� t � }�x�|D �]�}| j|�\}}|s<tjtd�j|�� q|jr\tjtd�j|j|j�� �xj|D �]`}| j|dd�\}}} | j j j |j � |j � �} | j|| |�} t� } |j � | d< |j � | | | | d< |j� | d< |j� | d< |j� | d < | | d < d j| �| d < |j� | d < |j� | d< |j� | d< t � } xV|j� D ]J}xB|j� D ]6}x.|j� D ]"\}}| jdj|dj|��� �qXW �qJW �q<W djt| ��| d< djt|j � ��| d< |j| j | �j � � qdW qW djt|��}|�r�|t 7 }|S )Nz Unable to resolve argument {}z%Ignoring unnecessary profile: '{}/{}'T)r� r� �StreamZVersionZContextZ Architecture�Profilesr� zDefault profiles�Repo�SummaryZ Descriptionz{}:[{}]�,r� ZRequiresZ Artifactsz ) r0 r r r r r r r r� r r( r; r r� r� r Z getVersionZ getContextZgetArchr9 r4 � getSummaryZgetDescriptionZgetModuleDependenciesZ getRequiresr r? r: rA r� r� �MODULE_INFO_TABLE_HINT)r r r� r� rL r" r� r� r� r� r� r� r� Zreq_setZreqZ require_dictZ mod_requirerK � str_tabler r r � _get_info^ sP * zModuleBase._get_infoc C s� t jj� }|jd� |jd� |jd�}|jd�}|jd� |jd� |j� xL| j � D ]@\}}|d krld}|j � }|j |�j |� |j |�j t |�� qXW |S )NTz : r� ZValuer� rZ )r� � smartcols�TableZenableNoheadingsZsetColumnSeparator� newColumn�setWrapZ setSafecharsZsetNewlineWrapFunctionr �newLine� getColumnCell�setDatar� )r� �table� column_nameZ column_valueZ line_name�value�liner r r r� � s z ModuleBase._create_simple_tablec C s� t � }xx|D ]p}| j|�\}}|s8tjtd�j|�� q |jrXtjtd�j|j|j�� x"|D ]}|j� }|r^|j |� q^W q W dj t |��}|S )Nz Unable to resolve argument {}z%Ignoring unnecessary profile: '{}/{}'z ) r0 r r r r r r r ZgetYamlr? r9 r: ) r r r� r� rL r" r� r Z output_stringr r r �_get_full_info� s zModuleBase._get_full_infoc C s� t � }| jjj� }| jjj� jdd�j� }| jjjtj d�}x6|D ].}t j j |�}|j |j| jjddd|d��}qBW |j� x�|D ]�}|j� } | s�q�|j| d�} | r�x�| D ]�} d} g } x4t|j� td�D ] }| j|j� kr�| j|j� � q�W t� }|j� |d < d jt| ��|d < |j� |d < |j � |d < | j |�}| dj | jj j j!t"| ���7 } | dj |j#� �7 } |j$| � q�W q�W djt|��S )NT)r_ )�flagsF)Z with_nevraZ with_providesZwith_filenamesre )� nevra_strictrZ )r� ZModuler� r� r� r� z{} z{}z )%r0 r r( �getModulePackagesri re rj rk r. ZIGNORE_MODULAR_EXCLUDESr Zsubjectr� ro Zget_best_queryrA rl r: r8 r r r= r2 r r r� r9 r4 r� r� r r� �term�boldr� r� r? )r Z rpm_specsr� ZmodulePackagesZ baseQueryZgetBestInitQueryr! r� r� rx re ra Z string_outputrN r r� r� r r r �_what_provides� s@ zModuleBase._what_providesc sr t jj� }|jt jjj� |jd� |jd�}|jd�}|jd�}|jd� |jd�}|jd� � jj j spd|_ x�|D ]�}x�|D ]�}t |�dkr�|d } n(� fdd �|D �} | r�| d } n|d } |j � } � j| d d �\} } }� jjj| j� | j� �}� j| || �}| j|�j| j� � | j|�j| j� | | | � | j|�j|� � j| j� �}| j|�j|� q�W qvW |S ) NTr� r� r� r� r\ r c s g | ]}� j jj|�r|�qS r )r r( r) )r+ rU )r r r r- � s z5ModuleBase._create_and_fill_table.<locals>.<listcomp>F)r� )r� r� r� Z setTermforceZTermForce_AUTOZ enableMaxoutr� r� r r� �verboseZhiddenr� r� r� r( r; r r� r� r� r� r� r� )r r� r� r� Z column_streamZcolumn_profilesZ column_infoZlatest_per_repoZnameStreamArchr� Zactiver� r� r� r� r� r� Z summary_strr )r r �_create_and_fill_table� sD z!ModuleBase._create_and_fill_tablec C s� g }|r0x2|D ] }| j |�\}}|j|� qW n | jjj� }| jjj||�}|sTdS | j|�}d} d} y"| jj|d d d j� j } W n( t k r� |d d d j� } Y nX t |d �} | j |�} | j | �}|| 7 }x�td|j� �D ]�}| | |k�r�| | 7 } | d7 } y"| jj|| d d j� j } W n* t k �rX || d d j� } Y nX t || �} |d7 }|| j | �7 }|| 7 }|j|�}||j||�7 }q�W |t S )NrZ r r\ r� )r r7 r r( r� ZgetLatestModulesPerRepor� r� r4 r �KeyErrorr� �_format_header�_format_repoid�rangeZgetNumberOfLines�getLiner� �MODULE_TABLE_HINT)r r Z module_stater� r! rL r" r� r� Zcurrent_repo_id_indexZalready_printed_lines� repo_nameZversions�headerr� r� r� r r r �_get_brief_description sH " z!ModuleBase._get_brief_descriptionc C s& |j d�}|j||�jdd�d d S )Nr r� r\ )r� r� �split)r r� r� r r r r� . s zModuleBase._format_headerc C s dj | jjjj|��S )Nz{} )r r r� r� r� )r r� r r r r� 2 s zModuleBase._format_repoidc C s | j jj� jddgd�j� }|j|d�}g }dd� | j jj� D �}|j||j� d�}|j |�}x�|j � D ]�\} } |j| d�} | s�|j| d�} | s�x | D ]} t j t d �j| �� q�W t j t d �j| �� |j| � qh| j jjj| � tjj| j j�} | j| d � | j jj| | d � qhW ||fS ) NrY rX )r` )r� c S s g | ]}|j r|j�qS r )r� r� )r+ r� r r r r- < s z9ModuleBase._install_profiles_internal.<locals>.<listcomp>)Zreponamer )r z Unable to resolve argument {}zNo match for package {})ra )rb Zoptional)r ri re rj rk rl r� r� rd ro r r r1 r r r7 rs Z group_membersr? r rq rr r0 r< )r rG rF rD rz ry r r� Zhotfix_packagesrT Z set_specsre r! r{ r r r rC 5 s, z%ModuleBase._install_profiles_internalN)T)T)T)F)F)#�__name__� __module__� __qualname__r r$ r' r< r| r~ r� r� r� r r3 r� rc rg rh r r% r� r� r� r� r� r� � staticmethodr� r� r� r� r� r� r� rC r r r r r + s@ U : % - (**r c C s& t jj| �}djtddt| ��|g�S )Nr� zModular dependency problem:z Modular dependency problems:)r �utilZ_format_resolve_problemsr9 r r� )�errorsrP r r r � format_modular_solver_errorsS s r� )"� collectionsr r. Zlibdnf.smartcolsr� Z libdnf.moduleZ dnf.selectorr Zdnf.exceptionsZdnf.module.exceptionsr Zdnf.utilr Zdnf.i18nr r r r� rU ZModulePackageContainerZModuleState_DEFAULTr� ZModuleState_ENABLEDr� ZModuleState_DISABLEDr& ZModuleState_UNKNOWNr} r� r� r �objectr r� r r r r �<module> s0 .
SAVE
CANCEL