Merge pull request #334 from uberhacker/feature/add-crew-whatprovides-command

Add crew whatprovides command

crew

@@ -28,7 +28,6 @@ case ARCH
     SHORTARCH="32"
 end
 
-
 $LOAD_PATH.unshift "#{CREW_LIB_PATH}lib"
 
 USER = `whoami`.chomp
@@ -52,8 +51,8 @@ end
 def list_packages
   Find.find (CREW_LIB_PATH + 'packages') do |filename|
     Find.find(CREW_CONFIG_PATH + 'meta/') do |packageList|
-        packageName = File.basename filename, '.rb'
-        print '(i) ' if packageList == CREW_CONFIG_PATH + 'meta/' + packageName + '.filelist' 
+      packageName = File.basename filename, '.rb'
+      print '(i) ' if packageList == CREW_CONFIG_PATH + 'meta/' + packageName + '.filelist'
     end
     puts File.basename filename, '.rb' if File.extname(filename) == '.rb'
   end
@@ -66,6 +65,32 @@ def search (pkgName, silent = false)
   abort "package #{pkgName} not found :("
 end
 
+def whatprovides (pkgName)
+  fileArray = []
+  Find.find (CREW_CONFIG_PATH + 'meta/') do |packageList|
+    if File.file? packageList
+      if packageList[/\.filelist$/]
+        packageName = File.basename packageList, '.filelist'
+        File.readlines(packageList).each do |line|
+          found = line[/#{Regexp.new(pkgName)}/]
+          if found
+            fileLine = packageName + ': ' + line
+            if not fileArray.include? fileLine
+              fileArray.push(fileLine)
+            end
+          end
+        end
+      end
+    end
+  end
+  if not fileArray.empty?
+    fileArray.sort.each do |item|
+      puts item
+    end
+    puts "\nTotal found: #{fileArray.length}"
+  end
+end
+
 def update
   abort "'crew update' is used to update crew itself. Use 'crew upgrade <packageName> to upgrade a specific package." if @pkgName
 
@@ -371,6 +396,12 @@ when "search"
   else
     list_packages
   end
+when "whatprovides"
+  if @pkgName
+    whatprovides @pkgName
+  else
+    puts "Usage: crew whatprovides [pattern]"
+  end
 when "download"
   search @pkgName
   download
@@ -386,10 +417,10 @@ when "remove"
   search @pkgName
   remove
 when nil
-  puts "Chromebrew, version 0.2.1"
+  puts "Chromebrew, version 0.2.2"
   puts "Usage: crew [command] [package]"
-  puts "Available commands: search, download, install, remove"
+  puts "Available commands: search, download, install, remove, whatprovides"
 else
   puts "I have no idea how to do #{@command} :("
-  puts "Available commands: search, download, install, remove"
+  puts "Available commands: search, download, install, remove, whatprovides"
 end