FileBsearch

library for Ruby.

binary search for sorted text file. it is effective when file size is bigger.

gem install file_bsearch

common arguments in usage document. mean of each arguments are following.

for character encodings. you can pass String object that is 'utf8', 'eucjp', 'jis', 'sjis' or each prefix. if you pass nil or does not pass, search for ascii character.

path for sorted text file.

string for search.

string for prefix search.

FileBsearch.exist?(path, string, encoding)

File.bsearch?(path, string, encoding)

file = open(path)
file.bsearch?(string, encoding)

if exists, return true. if not exists, return false.

FileBsearch.index(path, string, encoding)

File.bsearch(path, string, encoding)

file = open(path)
file.bsearch(string, encoding)

if exists, return Integer object that has the position of file pointer for head of matched line. if not exists, return false.

FileBsearch.get_lines(path, prefix, encoding)

File.bsearch_lines(path, prefix, encoding)

file = open(path)
file.bsearch_lines(prefix, encoding)

if exists, return Array object that has the matched lines. if not exists, return empty Array object.

1. Fork it ( https://github.com/indeep-xyz/ruby-file-bsearch/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request

indeep-xyz (Japanese language)