Sha256: 2b3b329aa0e2202d1ff6036a2bc7de6fd7bf12b5bdbb369d2b34c15ab394e3c4
Contents?: true
Size: 1.91 KB
Versions: 4
Compression:
Stored size: 1.91 KB
Contents
module Compass::Core::HTTPUtil
# like File#join, but always uses '/' instead of File::SEPARATOR
def url_join(*args)
args.inject("") do |m, a|
m << "/" unless m.end_with?('/') || a.start_with?('/') if m.length > 0
m.gsub!(%r{/+$}, '') if a.start_with?('/')
m << a
end
end
# Eliminates parent directory references (E.g. "..") and
# self directory references references (E.g. ".") from urls.
# Removes any duplicated separators (E.g. //)
# path should not include the protol, host, query param or target.
def expand_url_path(url)
# We remove the leading path otherwise we think there's an extra segment that can be removed
prefix = "/" if url.start_with?("/")
segments = url.gsub(%r{//+}, '/').split("/")
segments.shift if prefix
segments.push("") if url.end_with?("/")
segments.reverse!
result_segments = []
parent_count = 0
segments.each do |segment|
if segment == ".."
parent_count += 1
elsif segment == "."
# skip it
elsif parent_count > 0
parent_count -= 1
else
result_segments << segment
end
end
if parent_count > 0
raise ArgumentError, "Invalid URL: #{url} (not enough parent directories)"
end
result_segments.reverse!
prefix.to_s + result_segments.join("/")
end
# Compute a relative path from one url to another
# the urls should be only the path component (no host, query, or target)
def compute_relative_path(from_url, to_url)
from_components = expand_url_path(from_url).split("/")
from_components.pop # drop the filename from the source
to_components = expand_url_path(to_url).split("/")
to_base = to_components.pop
while from_components.first == to_components.first
break if from_components.empty?
from_components.shift
to_components.shift
end
([".."] * from_components.size + to_components + [to_base]).join("/")
end
end
Version data entries
4 entries across 4 versions & 1 rubygems