RPM reader/writer library written in Ruby.
It aims to provide fpm with a way to read and write rpms.
Why not use librpm?
The API is quite confusing in many places, poorly documented in most. I have reached out to some CentOS/rpm folks to see what we can do about improving that API.
Even still, librpm has dependencies of its own. I want fpm to be able to read and write RPMs without requiring and endless chain of dependencies and most especially without requiring root access to get things going.
Mainly, if I try to build librpm myself, I get this: "configure: error: missing required NSPR / NSS header" and I'm not the burden of dependency resolution on fpm users.
It should be possible to do a read+modify+write on an RPM.
Creating an RPM (proposed API)
rpm = RPM.new # requires and conflicts rpm.requires("name") <= "version" # Something fun-dsl-likef rpm.requires("name", :<=, "version") # Or maybe something like this # provides rpm.provides("name") # Add some files rpm.files << path rpm.files << path2 rpm.files << path3 # Scripts? rpm.scripts[:preinstall](path_or_script_string) rpm.scripts[:postinstall](path_or_script_string) rpm.scripts[:preuninstall](path_or_script_string) rpm.scripts[:postuninstall](path_or_script_string) rpm.write(output_file_name)
Reading an RPM (proposed API)
rpm = RPM.read(file) rpm.requires # Array of RPM::Requires ? rpm.provides # Array of 'Provides' strings? rpm.conflicts # Array of RPM::Conflicts ? rpm.files # Array of RPM::File ?
Maybe something like:
rpm.files.each do |file| # Tags that are defined in rpm header tags # fileclass filecolors filecontexts filedependsn filedependsx filedevices # filedigests fileflags filegroupname fileinodes filelangs filelinktos # filemodes filemtimes filerdevs filesizes fileusername fileverifyflags # # frankly, we don't care about most of these. Meaningful ones: # username, groupname, size, mtime, mode, linkto # file.io could give a nice IO-like thing that let you read the file out # of the rpm end