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#: * `fetch` [`--force`] [`--retry`] [`-v`] [`--devel`|`--HEAD`] [`--deps`] [`--build-from-source`|`--force-bottle`] <formulae>:
#: Download the source packages for the given <formulae>.
#: For tarballs, also print SHA-256 checksums.
#:
#: If `--HEAD` or `--devel` is passed, fetch that version instead of the
#: stable version.
#:
#: If `-v` is passed, do a verbose VCS checkout, if the URL represents a VCS.
#: This is useful for seeing if an existing VCS cache has been updated.
#:
#: If `--force` is passed, remove a previously cached version and re-fetch.
#:
#: If `--retry` is passed, retry if a download fails or re-download if the
#: checksum of a previously cached version no longer matches.
#:
#: If `--deps` is passed, also download dependencies for any listed <formulae>.
#:
#: If `--build-from-source` is passed, download the source rather than a
#: bottle.
#:
#: If `--force-bottle` is passed, download a bottle if it exists for the current
#: version of OS X, even if it would not be used during installation.
require "formula"
module Homebrew
def fetch
raise FormulaUnspecifiedError if ARGV.named.empty?
if ARGV.include? "--deps"
bucket = []
ARGV.formulae.each do |f|
bucket << f
bucket.concat f.recursive_dependencies.map(&:to_formula)
end
bucket.uniq!
else
bucket = ARGV.formulae
end
puts "Fetching: #{bucket * ", "}" if bucket.size > 1
bucket.each do |f|
f.print_tap_action verb: "Fetching"
fetched_bottle = false
if fetch_bottle?(f)
begin
fetch_formula(f.bottle)
rescue Exception => e
raise if ARGV.homebrew_developer? || e.is_a?(Interrupt)
fetched_bottle = false
onoe e.message
opoo "Bottle fetch failed: fetching the source."
else
fetched_bottle = true
end
end
next if fetched_bottle
fetch_formula(f)
f.resources.each { |r| fetch_resource(r) }
f.patchlist.each { |p| fetch_patch(p) if p.external? }
end
end
def fetch_bottle?(f)
return true if ARGV.force_bottle? && f.bottle
return false unless f.bottle && f.pour_bottle?
return false if ARGV.build_formula_from_source?(f)
return false unless f.bottle.compatible_cellar?
true
end
def fetch_resource(r)
puts "Resource: #{r.name}"
fetch_fetchable r
rescue ChecksumMismatchError => e
retry if retry_fetch? r
opoo "Resource #{r.name} reports different #{e.hash_type}: #{e.expected}"
end
def fetch_formula(f)
fetch_fetchable f
rescue ChecksumMismatchError => e
retry if retry_fetch? f
opoo "Formula reports different #{e.hash_type}: #{e.expected}"
end
def fetch_patch(p)
fetch_fetchable p
rescue ChecksumMismatchError => e
Homebrew.failed = true
opoo "Patch reports different #{e.hash_type}: #{e.expected}"
end
private
def retry_fetch?(f)
@fetch_failed ||= Set.new
if ARGV.include?("--retry") && @fetch_failed.add?(f)
ohai "Retrying download"
f.clear_cache
true
else
Homebrew.failed = true
false
end
end
def fetch_fetchable(f)
f.clear_cache if ARGV.force?
already_fetched = f.cached_download.exist?
begin
download = f.fetch
rescue DownloadError
retry if retry_fetch? f
raise
end
return unless download.file?
puts "Downloaded to: #{download}" unless already_fetched
puts Checksum::TYPES.map { |t| "#{t.to_s.upcase}: #{download.send(t)}" }
f.verify_download_integrity(download)
end
end
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