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Merge pull request #5653 from FuegoFro/cask_handle_already_downloaded_file

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Cask handle already downloaded file
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Mike McQuaid 2019-02-04 17:39:38 +01:00 committed by GitHub
commit a733089940
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2 changed files with 42 additions and 4 deletions
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28
Library/Homebrew/test/cask/cmd/info_spec.rb
View File

@ -136,4 +136,32 @@ describe Cask::Cmd::Info, :cask do
Caffeine.app (App)
EOS
end
it "can run be run with a url twice" do
expect {
described_class.run("https://raw.githubusercontent.com/Homebrew/homebrew-cask" \
"/d0b2c58652ae5eff20a7a4ac93292a08b250912b/Casks/docker.rb")
described_class.run("https://raw.githubusercontent.com/Homebrew/homebrew-cask" \
"/d0b2c58652ae5eff20a7a4ac93292a08b250912b/Casks/docker.rb")
}.to output(<<~EOS).to_stdout
==> Downloading https://raw.githubusercontent.com/Homebrew/homebrew-cask/d0b2c58652ae5eff20a7a4ac93292a08b250912b/Casks/docker.rb.
docker: 2.0.0.2-ce-mac81,30215 (auto_updates)
https://www.docker.com/community-edition
Not installed
==> Names
Docker Community Edition
Docker CE
==> Artifacts
Docker.app (App)
==> Downloading https://raw.githubusercontent.com/Homebrew/homebrew-cask/d0b2c58652ae5eff20a7a4ac93292a08b250912b/Casks/docker.rb.
docker: 2.0.0.2-ce-mac81,30215 (auto_updates)
https://www.docker.com/community-edition
Not installed
==> Names
Docker Community Edition
Docker CE
==> Artifacts
Docker.app (App)
EOS
end
end

16
Library/Homebrew/utils/curl.rb
View File

@ -51,10 +51,20 @@ def curl_download(*args, to: nil, **options)
destination = Pathname(to)
destination.dirname.mkpath
continue_at = if destination.exist? &&
curl_output("--location", "--range", "0-1",
range_stdout = curl_output("--location", "--range", "0-1",
"--dump-header", "-",
"--write-out", "%{http_code}",
"--output", "/dev/null", *args, **options).stdout.to_i == 206 # Partial Content
"--output", "/dev/null", *args, **options).stdout
headers, _, http_status = range_stdout.partition("\r\n\r\n")
supports_partial_download = http_status.to_i == 206 # Partial Content
if supports_partial_download &&
destination.exist? &&
destination.size == %r{^.*Content-Range: bytes \d+-\d+/(\d+)\r\n.*$}m.match(headers)&.[](1)&.to_i
return # We've already downloaded all the bytes
end
continue_at = if destination.exist? && supports_partial_download
"-"
else
0