39 lines
986 B
Ruby
Executable File
39 lines
986 B
Ruby
Executable File
module TMail
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class Mail
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def parse_header( f )
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name = field = nil
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unixfrom = nil
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while line = f.gets
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case line
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when /\A[ \t]/ # continue from prev line
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raise SyntaxError, 'mail is began by space' unless field
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field << ' ' << line.strip
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when /\A([^\: \t]+):\s*/ # new header line
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add_hf name, field if field
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name = $1
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field = $' #.strip
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when /\A\-*\s*\z/ # end of header
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add_hf name, field if field
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name = field = nil
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break
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when /\AFrom (\S+)/
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unixfrom = $1
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else
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# treat as continue from previos
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raise SyntaxError, 'mail is began by space' unless field
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field << ' ' << line.strip
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end
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end
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add_hf name, field if name
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if unixfrom
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add_hf 'Return-Path', "<#{unixfrom}>" unless @header['return-path']
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end
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end
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end
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end
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