100 lines
2 KiB
Ruby
100 lines
2 KiB
Ruby
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require 'fileutils'
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#require 'rdebug/base'
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#require 'qasim/map/generic'
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module Qasim ; module Map
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class ParseError < RuntimeError ; end
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class ConnectError < RuntimeError ; end
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module_function :from_file
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def from_file
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end
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def to_file
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end
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#
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# replace magic values withing map lines
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#
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# Allowed values :
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#
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# $(var) => variable value from environment
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# ${var} => variable value from environment
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#
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def env_substitute str, lineno
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local_env = ENV.clone
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while str =~ /\$(\w+)/ do
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case str
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when /\$\{(.+)\}/ then
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pattern = $1
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str.gsub!(/\$\{#{pattern}\}/,local_env[pattern])
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when /\$(\w+)/ then
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pattern = $1
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str.gsub!(/\$#{pattern}/,local_env[pattern])
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else
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puts "w: unknown pattern: %s at str %d" % [str, lineno]
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end
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end
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str
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end
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#
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# Load map description from file
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#
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def from_file filename
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f = File.open filename
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linect = 0
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f.each do |line|
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line = line.strip
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linect += 1
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line = env_substitute(line, linect)
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case line
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when /^\s*REMOTE_USER\s*=\s*(.*)\s*$/ then
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@user = $1
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#rdebug "d: remote_user => #{$1}"
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when /^\s*REMOTE_PORT\s*=\s*(.*)\s*$/ then
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@port = $1.to_i
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#rdebug "d: remote_port => #{$1}"
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when /^\s*REMOTE_HOST\s*=\s*(.*)\s*$/ then
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@host = $1
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#rdebug "d: remote_host => #{$1}"
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when /^\s*REMOTE_CYPHER\s*=\s*(.*)\s*$/ then
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if CYPHERS.map{|x| x.to_s}.include? $1 then
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@host = $1.to_sym
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end
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when /^\s*MAP\s*=\s*(.*)\s+(.*)\s*$/ then
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@links[$1] = $2
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#rdebug "d: link #{$1} => #{$2}"
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when /^\s*$/,/^\s*#/ then
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#rdebug "d: dropping empty line"
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else
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raise MapParseError, "parse error at #{@filename}:#{linect}"
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end
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end
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f.close
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end
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#
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# Write map description to file
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#
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def write path=nil
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@path=path unless path.nil?
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File.open(@path, "w") do |f|
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f.puts "REMOTE_USER=%s" % @user
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f.puts "REMOTE_PORT=%s" % @port
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f.puts "REMOTE_HOST=%s" % @host
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f.puts "REMOTE_CYPHER=%s" % @cypher
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end
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end
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end ; end
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