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Work around BOM find bug.

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This commit is contained in:
Markus Reiter 2020-11-26 11:24:39 +01:00
parent 5786a8937d
commit 794b128969
1 changed files with 17 additions and 29 deletions
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42
Library/Homebrew/unpack_strategy/dmg.rb
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@ -28,16 +28,21 @@ module UnpackStrategy
private_constant :DMG_METADATA
refine Pathname do
extend T::Sig
# Check if path is considered disk image metadata.
sig { returns(T::Boolean) }
def dmg_metadata?
DMG_METADATA.include?(cleanpath.ascend.to_a.last.to_s)
end
# Check if path is a symlink to a system directory (commonly to /Applications).
sig { returns(T::Boolean) }
def system_dir_symlink?
symlink? && MacOS.system_dir?(dirname.join(readlink))
end
sig { returns(String) }
def bom
tries = 0
result = loop do
@ -48,20 +53,19 @@ module UnpackStrategy
r = system_command("find", args: [".", "-print0"], chdir: self, print_stderr: false)
tries += 1
odebug "BOM `find` output (try #{tries}):", r.merged_output
# Spurious bug on CI, which in most cases can be worked around by retrying.
break r unless r.stderr.match?(/Interrupted system call/i)
raise "BOM `find` was interrupted." if tries >= 3
odebug "BOM `find` failed due to interrupt, retrying..."
raise "Command `#{r.command.shelljoin}` was interrupted." if tries >= 3
end
raise "BOM `find` took #{tries} tries." if tries > 1
odebug "Command `#{result.command.shelljoin}` in '#{self}' took #{tries} tries." if tries > 1
result
.stdout
.split("\0")
bom_paths = result.stdout.split("\0")
raise "BOM for path '#{self}' is empty." if bom_paths.empty?
bom_paths
.reject { |path| Pathname(path).dmg_metadata? }
.reject { |path| (self/path).system_dir_symlink? }
.join("\n")
@ -107,10 +111,8 @@ module UnpackStrategy
Tempfile.open(["", ".bom"]) do |bomfile|
bomfile.close
bom = path.bom
Tempfile.open(["", ".list"]) do |filelist|
filelist.puts(bom)
filelist.puts(path.bom)
filelist.close
system_command! "mkbom",
@ -118,24 +120,10 @@ module UnpackStrategy
verbose: verbose
end
result = system_command! "ditto",
system_command! "ditto",
args: ["--bom", bomfile.path, "--", path, unpack_dir],
verbose: verbose
if result.stderr.include?("contains no files, nothing copied")
all_paths_find = system_command("find", args: [".", "-print0"], chdir: path, print_stderr: false)
.stdout
.split("\0")
all_paths_ruby = Pathname.glob(path/"**/*", File::FNM_DOTMATCH)
.map { |p| p.relative_path_from(path).to_s }
odebug "BOM contents:", bom
odebug "BOM contents (retry):", path.bom
odebug "Directory contents (find):", all_paths_find.join("\n")
odebug "Directory contents (Ruby):", all_paths_ruby.join("\n")
end
FileUtils.chmod "u+w", Pathname.glob(unpack_dir/"**/*", File::FNM_DOTMATCH).reject(&:symlink?)
end
end