285 lines
8.6 KiB
Ruby
285 lines
8.6 KiB
Ruby
require 'digest/md5'
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module CouchRest
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class FileManager
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attr_reader :db
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attr_accessor :loud
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LANGS = {"rb" => "ruby", "js" => "javascript"}
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MIMES = {
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"html" => "text/html",
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"htm" => "text/html",
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"png" => "image/png",
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"css" => "text/css",
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"js" => "test/javascript"
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}
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def initialize(dbname, host="http://localhost:5984")
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@db = CouchRest.new(host).database(dbname)
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end
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def push_directory(push_dir, docid=nil)
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docid ||= push_dir.split('/').reverse.find{|part|!part.empty?}
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pushfiles = Dir["#{push_dir}/**/*.*"].collect do |f|
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{f.split("#{push_dir}/").last => open(f).read}
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end
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return if pushfiles.empty?
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@attachments = {}
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@signatures = {}
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pushfiles.each do |file|
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name = file.keys.first
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value = file.values.first
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@signatures[name] = md5(value)
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@attachments[name] = {
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"data" => value,
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"content_type" => MIMES[name.split('.').last]
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}
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end
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doc = @db.get(docid) rescue nil
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unless doc
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say "creating #{docid}"
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@db.save({"_id" => docid, "_attachments" => @attachments, "signatures" => @signatures})
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return
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end
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doc["signatures"] ||= {}
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doc["_attachments"] ||= {}
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# remove deleted docs
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to_be_removed = doc["signatures"].keys.select do |d|
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!pushfiles.collect{|p| p.keys.first}.include?(d)
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end
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to_be_removed.each do |p|
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say "deleting #{p}"
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doc["signatures"].delete(p)
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doc["_attachments"].delete(p)
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end
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# update existing docs:
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doc["signatures"].each do |path, sig|
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if (@signatures[path] == sig)
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say "no change to #{path}. skipping..."
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else
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say "replacing #{path}"
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doc["signatures"][path] = md5(@attachments[path]["data"])
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doc["_attachments"][path].delete("stub")
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doc["_attachments"][path].delete("length")
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doc["_attachments"][path]["data"] = @attachments[path]["data"]
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doc["_attachments"][path].merge!({"data" => @attachments[path]["data"]} )
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end
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end
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# add in new files
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new_files = pushfiles.select{|d| !doc["signatures"].keys.include?( d.keys.first) }
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new_files.each do |f|
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say "creating #{f}"
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path = f.keys.first
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content = f.values.first
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doc["signatures"][path] = md5(content)
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doc["_attachments"][path] = {
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"data" => content,
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"content_type" => MIMES[path.split('.').last]
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}
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end
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begin
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@db.save(doc)
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rescue Exception => e
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say e.message
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end
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end
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def push_views(view_dir)
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designs = {}
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Dir["#{view_dir}/**/*.*"].each do |design_doc|
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design_doc_parts = design_doc.split('/')
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next if /^lib\..*$/.match design_doc_parts.last
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pre_normalized_view_name = design_doc_parts.last.split("-")
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view_name = pre_normalized_view_name[0..pre_normalized_view_name.length-2].join("-")
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folder = design_doc_parts[-2]
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designs[folder] ||= {}
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designs[folder]["views"] ||= {}
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design_lang = design_doc_parts.last.split(".").last
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designs[folder]["language"] ||= LANGS[design_lang]
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libs = ""
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Dir["#{view_dir}/lib.#{design_lang}"].collect do |global_lib|
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libs << open(global_lib).read
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libs << "\n"
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end
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Dir["#{view_dir}/#{folder}/lib.#{design_lang}"].collect do |global_lib|
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libs << open(global_lib).read
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libs << "\n"
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end
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if design_doc_parts.last =~ /-map/
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designs[folder]["views"]["#{view_name}-map"] ||= {}
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designs[folder]["views"]["#{view_name}-map"]["map"] = read(design_doc, libs)
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designs[folder]["views"]["#{view_name}-reduce"] ||= {}
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designs[folder]["views"]["#{view_name}-reduce"]["map"] = read(design_doc, libs)
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end
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if design_doc_parts.last =~ /-reduce/
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designs[folder]["views"]["#{view_name}-reduce"] ||= {}
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designs[folder]["views"]["#{view_name}-reduce"]["reduce"] = read(design_doc, libs)
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end
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end
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# cleanup empty maps and reduces
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designs.each do |name, props|
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props["views"].each do |view, funcs|
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next unless view.include?("reduce")
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props["views"].delete(view) unless funcs.keys.include?("reduce")
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end
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end
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designs.each do |k,v|
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create_or_update("_design/#{k}", v)
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end
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designs
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end
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def pull_views(view_dir)
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prefix = "_design"
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ds = db.documents(:startkey => '#{prefix}/', :endkey => '#{prefix}/ZZZZZZZZZ')
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ds['rows'].collect{|r|r['id']}.each do |id|
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puts directory = id.split('/').last
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FileUtils.mkdir_p(File.join(view_dir,directory))
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views = db.get(id)['views']
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vgroups = views.keys.group_by{|k|k.sub(/\-(map|reduce)$/,'')}
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vgroups.each do|g,vs|
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mapname = vs.find {|v|views[v]["map"]}
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if mapname
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# save map
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mapfunc = views[mapname]["map"]
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mapfile = File.join(view_dir, directory, "#{g}-map.js") # todo support non-js views
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File.open(mapfile,'w') do |f|
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f.write mapfunc
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end
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end
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reducename = vs.find {|v|views[v]["reduce"]}
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if reducename
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# save reduce
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reducefunc = views[reducename]["reduce"]
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reducefile = File.join(view_dir, directory, "#{g}-reduce.js") # todo support non-js views
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File.open(reducefile,'w') do |f|
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f.write reducefunc
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end
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end
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end
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end
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end
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def push_app(appdir, appname)
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libs = []
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viewdir = File.join(appdir,"views")
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attachdir = File.join(appdir,"attachments")
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views, lang = read_design_views(viewdir)
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# attachments = read_attachments(attachdir)
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docid = "_design/#{appname}"
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design = @db.get(docid) rescue {}
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design['_id'] = docid
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design['views'] = views
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design['language'] = lang
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@db.save(design)
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push_directory(attachdir, docid)
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# puts views.inspect
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end
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# Generate an application in the given directory.
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# This is a class method because it doesn't depend on
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# specifying a database.
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def self.generate_app(app_dir)
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FileUtils.mkdir_p(app_dir)
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FileUtils.mkdir_p(File.join(app_dir,"attachments"))
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FileUtils.mkdir_p(File.join(app_dir,"views"))
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index_template = File.join(File.expand_path(File.dirname(__FILE__)), 'templates','index.html')
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index_dest = File.join(app_dir,"attachments","index.html")
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FileUtils.cp(index_template, index_dest)
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map_template = File.join(File.expand_path(File.dirname(__FILE__)), 'templates','example-map.js')
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map_dest = File.join(app_dir,"views","example-map.js")
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FileUtils.cp(map_template, map_dest)
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rereduce_template = File.join(File.expand_path(File.dirname(__FILE__)), 'templates','example-reduce.js')
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rereduce_dest = File.join(app_dir,"views","example-reduce.js")
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FileUtils.cp(rereduce_template, rereduce_dest)
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end
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private
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def read_design_views(viewdir)
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libs = []
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language = nil
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views = {}
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Dir["#{viewdir}/*.*"].each do |viewfile|
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view_parts = viewfile.split('/')
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viewfile_name = view_parts.last
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# example-map.js
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viewfile_name_parts = viewfile_name.split('.')
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viewfile_ext = viewfile_name_parts.last
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view_name_parts = viewfile_name_parts.first.split('-')
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func_type = view_name_parts.pop
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view_name = view_name_parts.join('-')
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contents = File.open(viewfile).read
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if /^lib\..*$/.match viewfile_name
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libs.push(contents)
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else
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views[view_name] ||= {}
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language = LANGS[viewfile_ext]
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views[view_name][func_type] = contents.sub(/(\/\/|#)include-lib/,libs.join("\n"))
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end
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end
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[views, language]
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end
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def say words
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puts words if @loud
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end
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def md5 string
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Digest::MD5.hexdigest(string)
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end
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def read(file, libs=nil)
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st = open(file).read
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st.sub!(/(\/\/|#)include-lib/,libs) if libs
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st
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end
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def create_or_update(id, fields)
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existing = @db.get(id) rescue nil
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if existing
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updated = existing.merge(fields)
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if existing != updated
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say "replacing #{id}"
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db.save(updated)
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else
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say "skipping #{id}"
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end
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else
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say "creating #{id}"
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db.save(fields.merge({"_id" => id}))
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end
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end
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end
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end
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