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� �v_c @ sk d d l Z d d l Z d d l Z d d l Z d d l Z e j d � Z d � Z d d d � � YZ d S( i����Ns \$(\w+)c C s� | s | Sg } x� | r� t j | � } | s? | j | � Pn | j d � j � } | j | | j � � } | j � \ } } | j | | � | j | � | | } q Wd j | � S( s Perform variable replacement @param raw: String to perform substitution on. @param vars: Dictionary of variables to replace. Key is variable name (without $ prefix). Value is replacement string. @return: Input raw string with substituted values. i t ( t _KEYCREt searcht appendt groupt lowert gett spant join( t rawt varst donet mt varnamet replacementt startt end( ( s. /usr/lib/python2.7/site-packages/yum/parser.pyt varReplace s t ConfigPreProcessorc B sS e Z d Z d d � Z d d � Z d � Z d � Z d � Z d � Z d � Z RS( s� ConfigParser Include Pre-Processor File-like Object capable of pre-processing include= lines for a ConfigParser. The readline function expands lines matching include=(url) into lines from the url specified. Includes may occur in included files as well. Suggested Usage:: cfg = ConfigParser.ConfigParser() fileobj = confpp( fileorurl ) cfg.readfp(fileobj) c C s� | | _ d | _ d | _ t j | � d } | d k r� | d d k r{ y t j � d } Wn d } n X| | } n d | } n | } g | _ g | _ | j | � } | d k r� t j d | � n d S( Nt ri R t /s file://s Error accessing file: %s( t _varst Nonet _sectiont modet urlparset ost getcwdt _incstackt _alreadyincludedt _pushfilet Errorst ConfigError( t selft configfileR t schemet rootdirt urlt fo( ( s. /usr/lib/python2.7/site-packages/yum/parser.pyt __init__= s$ i c C s2 d } x� t | j � d k r� | j d } | j � } t | � d k r� t j d | � } | r� | j d � } t | � d k r� t j d | j � q� t | | j � } | j | � } q� t j d | � } | r� | j d � | _ n Pq | j � q Wt j d | � } | r"| j � } n t | | j � S( s� Implementation of File-Like Object readline function. This should be the only function called by ConfigParser according to the python docs. We maintain a stack of real FLOs and delegate readline calls to the FLO on top of the stack. When EOF occurs on the topmost FLO, it is popped off the stack and the next FLO takes over. include= lines found anywhere cause a new FLO to be opened and pushed onto the top of the stack. Finally, we return EOF when the bottom-most (configfile arg to __init__) FLO returns EOF. Very Technical Pseudo Code:: def confpp.readline() [this is called by ConfigParser] open configfile, push on stack while stack has some stuff on it line = readline from file on top of stack pop and continue if line is EOF if line starts with 'include=' then error if file is recursive or duplicate otherwise open file, push on stack continue else return line return EOF R i i����s \s*include\s*=\s*(?P<url>.*)R% s>