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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,4 +1,3 @@ | ||
| source 'https://rubygems.org' | ||
| gemspec :name => "github-linguist" | ||
| gemspec :name => "github-linguist-grammars" | ||
| gem 'byebug' if RUBY_VERSION >= '2.0' |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,138 @@ | ||
| #!/usr/bin/env ruby | ||
|
|
||
| require 'linguist' | ||
| require 'rugged' | ||
| require 'optparse' | ||
| require 'json' | ||
| require 'tmpdir' | ||
| require 'zlib' | ||
|
|
||
| class GitLinguist | ||
| def initialize(path, commit_oid, incremental = true) | ||
| @repo_path = path | ||
| @commit_oid = commit_oid | ||
| @incremental = incremental | ||
| end | ||
|
|
||
| def linguist | ||
| if @commit_oid.nil? | ||
| raise "git-linguist must be called with a specific commit OID to perform language computation" | ||
| end | ||
| repo = Linguist::Repository.new(rugged, @commit_oid) | ||
|
|
||
| if @incremental && stats = load_language_stats | ||
| old_commit_oid, old_stats = stats | ||
|
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||
| # A cache with NULL oid means that we want to froze | ||
| # these language stats in place and stop computing | ||
| # them (for performance reasons) | ||
| return old_stats if old_commit_oid == NULL_OID | ||
| repo.load_existing_stats(old_commit_oid, old_stats) | ||
| end | ||
|
|
||
| result = yield repo | ||
|
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| save_language_stats(@commit_oid, repo.cache) | ||
| result | ||
| end | ||
|
|
||
| def load_language_stats | ||
| version, oid, stats = load_cache | ||
| if version == LANGUAGE_STATS_CACHE_VERSION && oid && stats | ||
| [oid, stats] | ||
| end | ||
| end | ||
|
|
||
| def save_language_stats(oid, stats) | ||
| cache = [LANGUAGE_STATS_CACHE_VERSION, oid, stats] | ||
| write_cache(cache) | ||
| end | ||
|
|
||
| def clear_language_stats | ||
| File.unlink(cache_file) | ||
| rescue Errno::ENOENT | ||
| end | ||
|
|
||
| def disable_language_stats | ||
| save_language_stats(NULL_OID, {}) | ||
| end | ||
|
|
||
| protected | ||
| NULL_OID = ("0" * 40).freeze | ||
|
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||
| LANGUAGE_STATS_CACHE = 'language-stats.cache' | ||
| LANGUAGE_STATS_CACHE_VERSION = "v3:#{Linguist::VERSION}" | ||
|
|
||
| def rugged | ||
| @rugged ||= Rugged::Repository.bare(@repo_path) | ||
| end | ||
|
|
||
| def cache_file | ||
| File.join(@repo_path, LANGUAGE_STATS_CACHE) | ||
| end | ||
|
|
||
| def write_cache(object) | ||
| return unless File.directory? @repo_path | ||
|
|
||
| begin | ||
| tmp_path = Dir::Tmpname.make_tmpname(cache_file, nil) | ||
| File.open(tmp_path, "wb") do |f| | ||
| marshal = Marshal.dump(object) | ||
| f.write(Zlib::Deflate.deflate(marshal)) | ||
| end | ||
|
|
||
| File.rename(tmp_path, cache_file) | ||
| rescue => e | ||
| (File.unlink(tmp_path) rescue nil) | ||
| raise e | ||
| end | ||
| end | ||
|
|
||
| def load_cache | ||
| marshal = File.open(cache_file, "rb") { |f| Zlib::Inflate.inflate(f.read) } | ||
| Marshal.load(marshal) | ||
| rescue SystemCallError, ::Zlib::DataError, ::Zlib::BufError, TypeError | ||
| nil | ||
| end | ||
| end | ||
|
|
||
|
|
||
| def git_linguist(args) | ||
| incremental = true | ||
| commit = nil | ||
|
|
||
| parser = OptionParser.new do |opts| | ||
| opts.banner = "Usage: git-linguist [OPTIONS] stats|breakdown|dump-cache|clear|disable" | ||
|
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| opts.on("-f", "--force", "Force a full rescan") { incremental = false } | ||
| opts.on("--commit=COMMIT", "Commit to index") { |v| commit = v} | ||
| end | ||
|
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| parser.parse!(args) | ||
|
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| git_dir = `git rev-parse --git-dir`.strip | ||
| raise "git-linguist must be ran in a Git repository (#{Dir.pwd})" unless $?.success? | ||
| wrapper = GitLinguist.new(git_dir, commit, incremental) | ||
|
|
||
| case args.pop | ||
| when "stats" | ||
| wrapper.linguist do |linguist| | ||
| puts JSON.dump(linguist.languages) | ||
| end | ||
| when "breakdown" | ||
| wrapper.linguist do |linguist| | ||
| puts JSON.dump(linguist.breakdown_by_file) | ||
| end | ||
| when "dump-cache" | ||
| puts JSON.dump(wrapper.load_language_stats) | ||
| when "clear" | ||
| wrapper.clear_language_stats | ||
| when "disable" | ||
| wrapper.disable_language_stats | ||
| else | ||
| $stderr.print(parser.help) | ||
| exit 1 | ||
| end | ||
| end | ||
|
|
||
| git_linguist(ARGV) |
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