118 lines
		
	
	
		
			3.0 KiB
		
	
	
	
		
			Ruby
		
	
	
	
	
	
			
		
		
	
	
			118 lines
		
	
	
		
			3.0 KiB
		
	
	
	
		
			Ruby
		
	
	
	
	
	
| # frozen_string_literal: true
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| 
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| require "open3"
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| 
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| module Git
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|   module_function
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| 
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|   def last_revision_commit_of_file(repo, file, before_commit: nil)
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|     args = if before_commit.nil?
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|       ["--skip=1"]
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|     else
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|       [before_commit.split("..").first]
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|     end
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| 
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|     out, = Open3.capture3(
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|       HOMEBREW_SHIMS_PATH/"scm/git", "-C", repo,
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|       "log", "--format=%h", "--abbrev=7", "--max-count=1",
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|       *args, "--", file
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|     )
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|     out.chomp
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|   end
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| 
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|   def last_revision_commit_of_files(repo, files, before_commit: nil)
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|     args = if before_commit.nil?
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|       ["--skip=1"]
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|     else
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|       [before_commit.split("..").first]
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|     end
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| 
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|     # git log output format:
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|     #   <commit_hash>
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|     #   <file_path1>
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|     #   <file_path2>
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|     #   ...
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|     # return [<commit_hash>, [file_path1, file_path2, ...]]
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|     out, = Open3.capture3(
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|       HOMEBREW_SHIMS_PATH/"scm/git", "-C", repo, "log",
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|       "--pretty=format:%h", "--abbrev=7", "--max-count=1",
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|       "--diff-filter=d", "--name-only", *args, "--", *files
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|     )
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|     rev, *paths = out.chomp.split(/\n/).reject(&:empty?)
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|     [rev, paths]
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|   end
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| 
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|   def last_revision_of_file(repo, file, before_commit: nil)
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|     relative_file = Pathname(file).relative_path_from(repo)
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| 
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|     commit_hash = last_revision_commit_of_file(repo, relative_file, before_commit: before_commit)
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|     out, = Open3.capture3(
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|       HOMEBREW_SHIMS_PATH/"scm/git", "-C", repo,
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|       "show", "#{commit_hash}:#{relative_file}"
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|     )
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|     out
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|   end
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| end
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| 
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| module Utils
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|   def self.git_available?
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|     @git_available ||= quiet_system HOMEBREW_SHIMS_PATH/"scm/git", "--version"
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|   end
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| 
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|   def self.git_path
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|     return unless git_available?
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| 
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|     @git_path ||= Utils.popen_read(
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|       HOMEBREW_SHIMS_PATH/"scm/git", "--homebrew=print-path"
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|     ).chomp.presence
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|   end
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| 
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|   def self.git_version
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|     return unless git_available?
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| 
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|     @git_version ||= Utils.popen_read(
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|       HOMEBREW_SHIMS_PATH/"scm/git", "--version"
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|     ).chomp[/git version (\d+(?:\.\d+)*)/, 1]
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|   end
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| 
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|   def self.ensure_git_installed!
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|     return if git_available?
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| 
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|     # we cannot install brewed git if homebrew/core is unavailable.
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|     if CoreTap.instance.installed?
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|       begin
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|         oh1 "Installing #{Formatter.identifier("git")}"
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|         safe_system HOMEBREW_BREW_FILE, "install", "git"
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|       rescue
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|         raise "Git is unavailable"
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|       end
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|     end
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| 
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|     raise "Git is unavailable" unless git_available?
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|   end
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| 
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|   def self.clear_git_available_cache
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|     @git_available = nil
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|     @git_path = nil
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|     @git_version = nil
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|   end
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| 
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|   def self.git_remote_exists?(url)
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|     return true unless git_available?
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| 
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|     quiet_system "git", "ls-remote", url
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|   end
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| 
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|   def self.set_git_name_email!(author: true, committer: true)
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|     if Homebrew::EnvConfig.git_name
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|       ENV["GIT_AUTHOR_NAME"] = Homebrew::EnvConfig.git_name if author
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|       ENV["GIT_COMMITTER_NAME"] = Homebrew::EnvConfig.git_name if committer
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|     end
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| 
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|     return unless Homebrew::EnvConfig.git_email
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| 
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|     ENV["GIT_AUTHOR_EMAIL"] = Homebrew::EnvConfig.git_email if author
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|     ENV["GIT_COMMITTER_EMAIL"] = Homebrew::EnvConfig.git_email if committer
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|   end
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| end
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