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Contents
# Used the following blog post as a starting point, then completely rewrote the parser:
# http://proccli.com/2011/12/advanced-search-query-parsing-ruby/
# https://gist.github.com/1477730#file_search_terms.rb
module MongoRequestLogger
class SearchTerms
attr_reader :query, :parts, :search, :path, :search_regex
# query:: this is what you want tokenized
# split:: if you'd like to split values on "," then pass true
def initialize(query)
@query = query
@parts = {}
@search = nil
@search_regex = nil
parse_query
end
def [](key)
@parts[key]
end
private
SCANNER = /(?:(\w+):(\S+)) # key:value
|(?:"(.+)") # string in quotes
|(^\S+) # a path
|(?:\/(.+?)\/(?:\s|$)) # regular expression
|(\S+)/x # a word
def parse_query
search_parts = []
search_regex = nil
# We break up the query into a sequence of the following possible components:
# key:value
# "a string wrapped in quotes"
# /a/path (at the beginning of the string only)
# /a regular expression/
# word
groups = @query.scan(SCANNER)
groups.map do |key, value, search, path, regex, word|
if key
@parts[key.downcase] = value
elsif search
search_parts << search
elsif regex
@search_regex = regex
elsif path
@path = path
elsif word
search_parts << word
end
end
unless @search_regex
@search = search_parts.join(' ')
end
end
end
end
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16 entries across 16 versions & 1 rubygems