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Versions: 263
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Contents
require 'fileutils'
require 'rbbt/util/misc'
# Provides caching functionality for files downloaded from the internet
module FileCache
CACHEDIR = "/tmp/rbbt_cache"
FileUtils.mkdir CACHEDIR unless File.exist? CACHEDIR
def self.cachedir=(cachedir)
CACHEDIR.replace cachedir
FileUtils.mkdir_p CACHEDIR unless File.exist? CACHEDIR
end
def self.cachedir
CACHEDIR
end
def self.path(filename)
filename = File.basename filename
filename.match(/(.+)\.(.+)/)
base = filename.sub(/\..+/,'')
dirs = base.scan(/./).reverse.values_at(0,1,2,3,4).compact
File.join(File.join(CACHEDIR, *dirs), filename)
end
def self.add(filename, content)
path = path(filename)
FileUtils.makedirs(File.dirname(path), :mode => 0777)
Misc.sensiblewrite(path, content)
FileUtils.chmod 0666, path
path
end
def self.found(filename)
File.exists? FileCache.path(filename)
end
def self.get(filename)
path = path(filename)
return nil if ! File.exists? path
File.open(path)
end
def self.del(filename)
path = path(filename)
FileUtils.rm path if File.exist? path
end
def self.cache_online_elements(ids, pattern = nil, &block)
ids = [ids] unless Array === ids
result_files = {}
missing = []
ids.each do |id|
filename = pattern ? pattern.sub("{ID}", id.to_s) : id.to_s
if FileCache.found(filename)
result_files[id] = FileCache.path(filename)
else
missing << id
end
end
yield(missing).each do |id, content|
filename = pattern ? pattern.sub("{ID}", id.to_s) : id.to_s
path = FileCache.path(filename)
Open.write(path, content)
result_files[id] = path
end if missing.any?
result_files
end
end
Version data entries
263 entries across 263 versions & 1 rubygems