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@kevinjalbert
Last active Aug 1, 2022
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Git Dig (find deleted files whose content matches a regex)
#!/usr/bin/env ruby
require 'optparse'
require 'open3'
def files_with_search_query(sha, search_query)
`git show --format="" --name-only #{sha} -i --pickaxe-regex -S #{search_query}`.split("\n")
end
def grep_over_file(sha, file, search_query)
git_show_cmd = "git show --format='' -p #{sha} -- '#{file}'"
grep_cmd = "grep -i --color=always -E #{search_query}"
`#{git_show_cmd} | #{grep_cmd}`
end
def git_pickaxe_search(search_query, options, &block)
git_log_cmd = "git log --no-merges --format=%h"
git_log_cmd += " --after=\"#{options[:after]}\"" if options[:after]
git_log_cmd += " --before=\"#{options[:before]}\"" if options[:before]
git_log_cmd += " -i --pickaxe-regex -S #{search_query}"
Open3.popen3(git_log_cmd) do |stdin, stdout, stderr, thread|
yield(stdout)
end
end
def git_commit_info(sha)
`git show --no-patch #{sha}`
end
def find_root_dir
current_dir = Dir.pwd
until Dir.exist?([current_dir, ".git"].join(File::SEPARATOR)) do
parent_dir = File.dirname(current_dir)
if parent_dir == current_dir
puts "No .git repo found in path (or parent paths)."
exit
end
current_dir = parent_dir
end
current_dir
end
# Handle options
options = {}
OptionParser.new do |opts|
opts.banner = "Usage: git-dig [options] [regex query]"
opts.on("--after=DATE", "Only searches commits more recent than the specific date.") do |v|
options[:after] = v
end
opts.on("--before=DATE", "Only searches commits older recent than the specific date.") do |v|
options[:before] = v
end
opts.on("-h", "--help", "Prints this help") do
puts opts
exit
end
end.parse!
# Get search query
search_query = "\"#{ARGV.first}\""
if search_query == '""' # empty search as it would just be a pair of quotes
puts "You need to pass a search term as input."
exit
end
puts "Searching for any commits with any 'additions/removals'"
puts " Matching regex: #{search_query}"
if options[:after] || options[:before]
puts " With search options: #{options}"
end
puts ""
# Get SHAs of all commits which had some 'addition/removal' of the search term
git_pickaxe_search(search_query, options) do |stdout|
while line = stdout.gets
exit if line.nil?
sha = line.strip
puts git_commit_info(sha)
puts ""
# Print diff of files which have search term
files_with_search_query(sha, search_query).each do |file|
puts "FILE -> #{file}"
puts grep_over_file(sha, file, search_query)
puts ""
end
puts "-"*80
puts ""
end
end
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