3 Rg@sdZddlmZddlmZddlZddlZddZddZed d d d gZ d dZ ddZ dddZ ddZ edkr|e dS)a Utility to check ISC config grammar consistency. It detects statement names which use different grammar depending on position in the configuration file. E.g. "max-zone-ttl" in dnssec-policy uses '' vs. '( unlimited | ) used in options. ) namedtuple)groupbyNcCsi}x~|D]v}|jd st|j|gjt|d||kr t||d||g}x&|jD]\}}|j|gj|qbWq W|S)avReturn mapping statement name to "path" where it is allowed. _top is placeholder name for the namesless topmost context. E.g. { 'options: [('_top',)], 'server': [('_top', 'view'), ('_top',)], 'rate-limit': [('_top', 'options'), ('_top', 'view')], 'slip': [('_top', 'options', 'rate-limit'), ('_top', 'view', 'rate-limit')] } __mapbody) startswithAssertionError setdefaultappendtuplestatement2blockitemsextend)grammarpathZ key2placekeyZ nested2blockZ nested_keyZ nested_pathrA/home/abuild/rpmbuild/BUILD/bind-9.18.33/doc/misc/checkgrammar.pyr s   r cCsP|ddkstt||g}x,|ddD]}d|kr@|d}||}q,W|S)zDescend into grammar dict using provided path and return final dict found there. Intermediate steps into "_mapbody" subkeys are done automatically. r_topNr)rlist)rrnamesteprrrget_statement_grammar4s r Statementrr subgrammarcCsBdd}g}t||d}x$t||D]\}}|jt|q$W|S)zi Return groups of Statement tuples with identical grammars and flags. See itertools.groupby. cSst|jjS)N)sortedrr ) statementrrrkeyfuncLsz groupby_grammar..keyfunc)r)rrr r) statementsrgroups_keygrouprrrgroupby_grammarFs  r"c Cs^i}xT|jD]H\}}g}x*|D]"}t|||}|jt|||q Wt|}|||<qW|S)zV Return map {statement name: [groups of [Statement]s with identical grammar]. )r rr rr") Z whole_grammarplacesoutZstatement_namepathsgrammarsrZstatement_grammarrrrrdiff_statementsVs   r'rcCshdd}d|krZd|kstd|ks(t|dd}d|krR|dd j|d7}|d Sd }|d }|jd sd|kr||dd7}|d7}xt|dj|dD]v\}}|jd s|||jd|7}t|d||dd}nt|d||d}|ddkr|d7}||7}qW|jd s`||ddd7}d|kr`|dd j|d7}|d S)zCPretty print a given grammar node in the same way as cfg_test wouldcSs|\}}|dkrdS|S)z>Treat 'type' specially and always put it first, for zone typestyper)itemrrrrrsortkeyjsz pformat_grammar..sortkeyZ_grammar_idr;_flagsz // z,  r) Z_ignore_this_level z{ )r _pprint_namer)levelrNz};)rjoingetrr pformat_grammar)noder3r+r$indentrsubnodeZ inner_grammarrrrr7gs6        r7cCstj}tj|}WdQRXt|dg}x|t||jD]j\}}t|dkr:td|dx>|D]6}tddj dd |Dtd t |d j dd qdWtq:WdS) z Ingest output from cfg_test --grammar and print out statements which use different grammar in different contexts. Nrrz statement "z" is inconsistent across blocksz- path:z, css|]}dj|jVqdS)z -> N)r5r).0variantrrr szmain..r1r)r3) fileinputinput parsegrammarZ parse_mapbodyr r'r lenprintr5r7r)Zfileinrr#Z statementnamerr!rrrmains    rC__main__)r)__doc__ collectionsr itertoolsrr>r@r rrr"r'r7rC__name__rrrrs   +