3 Rg6@sndZddlZddlZddlZdddddgZejdZd d Zd d Zd dZ ddZ ddZ e dkrje dS)a  Read ISC config grammar description produced by "cfg_test --grammar", transform it into JSON, and print it to stdout. Beware: This parser is pretty dumb and heavily depends on cfg_test output format. See parse_mapbody() for more details. Maps are recursively parsed into sub-dicts, all other elements (lists etc.) are left intact and returned as one string. Output example from named.conf grammar showing three variants follow. Keys "_flags" and "_id" are present only if non-empty. Key "_grammar" denotes end node, key "_mapbody" denotes a nested map. { "acl": { "_flags": [ "may occur multiple times" ], "_grammar": " { ; ... }" }, "http": { "_flags": [ "may occur multiple times" ], "_id": "", "_mapbody": { "endpoints": { "_grammar": "{ ; ... }" }, "streams-per-connection": { "_grammar": "" } } }, "options": { "_mapbody": { "rate-limit": { "_mapbody": { "all-per-second": { "_grammar": "" } } } } } } Nzmay occur multiple timesobsolete deprecated experimentalz test onlyz [a-zA-Z0-9-]+c Csd|kstdt|}xvd D]n}yt|j||}Wntk rLwYnX|dkr|jjdsntd|d||dd krtd |qW|d |}||d }||fS) aSplit line on comment boundary and strip right-side whitespace. Supports only #, //, and /* comments which end at the end of line. It does NOT handle: - quoted strings - /* comments which do not end at line boundary - multiple /* comments on a single line "zlines with " are not supported#///*z*/z7unsupported /* comment, does not end at the end of lineNz*unsupported line with multiple /* comments)rrr)AssertionErrorlenminindex ValueErrorrstripendswithNotImplementedError)lineZ data_end_idx delimiterZ noncommentcommentrA/home/abuild/rpmbuild/BUILD/bind-9.18.33/doc/misc/parsegrammar.pysplit_commentsMs"    rccs>x8|D]0}t|\}}|j}|j}|s,q||fVqWdS)z?Consume single line from input, return non-comment and comment.N)rstrip)fileinrrrrr parse_linels  rcCs(g}xtD]}||kr |j|q W|S)zMExtract known flags from comments. Must match exact strings used by cfg_test.)FLAGSappend)commentsoutflagrrr parse_flagsws  r c Cs.i}xt|D]\}}t|}|dkr2||fS|jdjd}tj|sXtd||t|dj}|dd j}i||<|j dryt |\}}Wnt k rt ddYnX|r|||d <|r|||d <|||d <q|j dst |r |||d <|||d <qWt|s*t |S)a3Parse body of a "map" in ISC config format. Input lines can be only: - whitespace & comments only -> ignore - ; -> store as "_grammar" for this keyword - { -> parse sub-map and store (optional) as "_id", producing nested dict under "_mapbody" Also store known strings found at the end of line in "_flags". Returns: - tuple (map dict, map comment) when }; line is reached - map dict when we run out of lines without the closing }; z};r;zsuspicious keyword detectedNr {z*unfinished nested map, missing }; detected_flags_id_mapbody_grammar) rr splitr KEY_REGEX fullmatchrr rr parse_mapbodyrr )rZthismaprrflagskeygrammarZsubkeysrrrr+s6      r+c Cs2tj}t|}WdQRXttj|dddS)z/Read stdin or filename provided on command lineN)indent) fileinputinputr+printjsondumps)rr.rrrmains r6__main__) __doc__r1r4rercompiler)rrr r+r6__name__rrrr=s    :