class Overcommit::Hook::PreCommit::CaseConflicts

Checks for files that would conflict in case-insensitive filesystems Adapted from github.com/pre-commit/pre-commit-hooks

Public Instance Methods

run() click to toggle source
# File lib/overcommit/hook/pre_commit/case_conflicts.rb, line 7
def run
  repo_files = Set.new(applicable_files)

  unless Overcommit::GitRepo.initial_commit?
    paths = repo_files.map { |file| File.dirname(file) + File::SEPARATOR }.uniq
    repo_files += Overcommit::GitRepo.list_files(paths)
  end

  conflict_hash = repo_files.classify(&:downcase).
    select { |_, files| files.size > 1 }
  conflict_files = applicable_files.
    select { |file| conflict_hash.include?(file.downcase) }

  conflict_files.map do |file|
    conflicts = conflict_hash[file.downcase].map { |f| File.basename(f) }
    msg = "Conflict detected for case-insensitive file systems: #{conflicts.join(', ')}"
    Overcommit::Hook::Message.new(:error, file, nil, msg)
  end
end