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require 'yaml'
# This is to make sure Faraday doesn't warn the user about the `system_timer` gem missing.
old_warn, $-w = $-w, nil
begin
require 'faraday'
ensure
$-w = old_warn
end
require 'octokit'
module Pod
class Specification
class Statistics
def self.instance
@instance ||= new
end
def self.instance=(instance)
@instance = instance
end
attr_accessor :cache_file, :cache_expiration
def initialize
@cache_file = Config.instance.repos_dir + 'statistics.yml'
@cache_expiration = 60 * 60 * 24 * 3
end
def creation_date(set)
compute_creation_date(set)
end
def creation_dates(sets)
dates = {}
sets.each { |set| dates[set.name] = compute_creation_date(set, false) }
save_cache
dates
end
def github_watchers(set)
github_stats_if_needed(set)
get_value(set, :gh_watchers)
end
def github_forks(set)
github_stats_if_needed(set)
get_value(set, :gh_forks)
end
def github_pushed_at(set)
github_stats_if_needed(set)
get_value(set, :pushed_at)
end
private
def cache
@cache ||= cache_file && cache_file.exist? ? YAML::load(cache_file.read) : {}
end
def get_value(set, key)
if cache[set.name] && cache[set.name][key]
cache[set.name][key]
end
end
def set_value(set, key, value)
cache[set.name] ||= {}
cache[set.name][key] = value
end
def save_cache
File.open(cache_file, 'w') { |f| f.write(YAML::dump(cache)) } if cache_file
end
def compute_creation_date(set, save = true)
date = get_value(set, :creation_date)
unless date
Dir.chdir(set.sources.first.repo) do
date = Time.at(`git log --first-parent --format=%ct #{set.name}`.split("\n").last.to_i)
end
set_value(set, :creation_date, date)
end
save_cache if save
date
end
def github_stats_if_needed(set)
return if get_value(set, :gh_date) && get_value(set, :gh_date) > Time.now - cache_expiration
spec = set.specification
url = spec.source[:git] || ''
repo_id = url[/github.com\/([^\/\.]*\/[^\/\.]*)\.*/, 1]
return unless repo_id
begin
repo = Octokit.repo(repo_id)
rescue
return
end
cache[set.name] ||= {}
set_value(set, :gh_watchers, repo['watchers'])
set_value(set, :gh_forks, repo['forks'])
set_value(set, :pushed_at, repo['pushed_at'])
set_value(set, :gh_date, Time.now)
save_cache
end
end
end
end
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