I'm trying to submit a cask for Tentacle Sync Studio but I'm having issues with livecheck being able to find the most recent version. I ran brew audit --new-cask tentacle-sync-studio and received the following error - Version '1.30' differs from '' retrieved by livecheck.

cask "tentacle-sync-studio" do
  version "1.30"
  sha256 "4f7bdaef85b78f576babac91d57da3b3276cc98a2f81ac621bea96a48fe8796a"

  url "https://tentaclesync.com/files/downloads/ttsyncstudio-v#{version.dots_to_underscores}.dmg"
  name "Tentacle Sync Studio"
  desc "Automatically synchronize video and audio via timecode"
  homepage "https://tentaclesync.com/"
  
  livecheck do
    url "https://tentaclesync.zendesk.com/hc/en-us/articles/115003866805-Tentacle-Sync-Studio-macOS-"
    strategy :page_match
    regex(%r{/v?(\d (?:\.\d ) )/ttsyncstudio\.dmg}i)
  end

  depends_on macos: ">= :high_sierra"

  app "Tentacle Sync Studio.app"
end

I might not be using the correct "strategy" and I honestly have no idea how to set the regex despite reading Homebrew's instructions. Any help is appreciated.

CodePudding user response：

The vitalsource-bookshelf cask had a similar issue:

Previous livecheck URL had Cloudflare protection, use API URL instead.

You'll want to change

https://tentaclesync.zendesk.com/hc/en-us/articles/115003866805-Tentacle-Sync-Studio-macOS-

to

https://tentaclesync.zendesk.com/api/v2/help_center/en-us/articles/115003866805

However, a few more changes must be made for the livecheck to work:

1. Change the regex to href=.*?/ttsyncstudio-v?(\d (?:[._-]\d ) )\.dmg

   • We want to match this string: href=\"https://tentaclesync.com/files/downloads/ttsyncstudio-v1_30.dmg
   • href=.*? is a convention in homebrew/cask
   • [._-] matches a dot, underscore, or hyphen (another convention)

2. Add a do to strategy :page_match to change underscores to dots:

   strategy :page_match do |page, regex|
     page.scan(regex).map { |match| match[0].tr("_", ".") }
   end
   

   match[0] corresponds to the regex capture (\d (?:[._-]\d ) )

Finally, your cask file should look like this.