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#!/usr/bin/env ruby
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#
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# Converts %{?scl_prefix}rubygem-foo in a load of spec files to use a different scl_prefix variant
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# Used when moving from a single SCL to multiple, as it's configurable for different packages to
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# have different scl_prefixes.
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def lookup_table
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return @table if @table
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@table = {}
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File.read(File.expand_path('scl_prefix_update.conf', File.dirname(__FILE__))).each_line do |l|
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k,v = l.chomp.split('=')
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@table[k] = v
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end
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@table
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end
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def lookup(string)
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return lookup_table[string] if lookup_table.has_key?(string)
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if string =~ /\Arubygem[(-]([\w-]+)\)?\z/
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return lookup_table[$1] if lookup_table.has_key?($1)
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end
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raise("unknown #{string}")
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end
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def replace(file)
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file.gsub(/(%{\??)scl_prefix}([\w%{}()-]+)/) { |m| "#{$1}#{lookup($2)}}#{$2}" }
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end
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def add_obsoletes(file, filename)
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old_names = `rpm --define 'scl ruby193' --qf '%{name}\n' -q --specfile #{filename}`.split($/)
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old_name = old_names.first
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old_name = $1.gsub(/%{\??scl_prefix}/, 'ruby193-') if file =~ /^Name:\s*(.+?)\s*$/
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if old_name.include?('ruby193')
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lines = file.split($/)
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# insert Obsoletes after last Provides in main package
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first_package = lines.index { |l| l.start_with? '%package' } || -1
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last_provides = lines[0..first_package].rindex { |l| l.start_with? 'Provides:' }
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last_provides = lines[0..first_package].rindex { |l| l.start_with? 'Requires:' } unless last_provides
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lines.insert last_provides+1, "%{?scl:Obsoletes: #{old_name}}"
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# insert Obsoletes for -doc subpackages
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doc_package = lines.index { |l| l =~ /\A%package\s+.*doc/ }
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if doc_package
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next_section = lines[doc_package+1..-1].index { |l| l.start_with? '%' }
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last_requires = lines[doc_package, next_section].rindex { |l| l =~ /\A(Requires|Provides)/ }
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last_requires = lines[doc_package, next_section].rindex { |l| l =~ /\A[A-Z]/ } unless last_requires
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lines.insert doc_package+last_requires+1, "%{?scl:Obsoletes: #{old_name}-doc}"
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end
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file = lines.join($/) + $/
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end
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file
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end
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raise 'Usage: scl_prefix_update.rb FILE..' if ARGV.empty?
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ARGV.each do |a|
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begin
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File.write(a, add_obsoletes(replace(File.read(a)), a))
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rescue => e
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puts "parsing #{a}"
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raise e
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end
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end
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