115 lines
2.5 KiB
Ruby
115 lines
2.5 KiB
Ruby
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require 'fileutils'
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require 'qasim/map/generic'
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require 'qasim/map/ssh'
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require 'qasim/map/webdav'
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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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def class_for type
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plugin = nil
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ObjectSpace.each_object(Class) do |cls|
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if cls < Qasim::Map::Generic then
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plugin = cls if cls.handles.include? type.to_sym
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end
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end
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plugin
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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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# ${var} => variable value from environment
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#
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def env_substitute text
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seek = true
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str = text
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while seek do
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seek = false
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case str
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when /^(.*)\${([^}]+?)}(.*)$/ then
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before, pattern, after = [$1, $2, $3]
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pattern_value = env_substitute(pattern)
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pattern_value = (ENV[pattern_value] || "")
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str = before + pattern_value + after
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seek = true
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when /^(.*)\$(\w+)(.*)$/ then
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before, pattern, after = [$1, $2, $3]
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pattern_value = (ENV[pattern] || "")
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str = before + pattern_value + after
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seek = true
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end
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end
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str
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end
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#
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# Load description from file and create a Map object
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#
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def from_file appcfg, filename
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config = {
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type: :ssh # for config V1, we assume SSHFS
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}
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map = nil
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f = File.open filename
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linect = 0
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f.each do |line|
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line = line.strip
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linect += 1
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line = env_substitute(line, linect)
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case line
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when /^\s*TYPE\s*=\s*(.*)\s*$/ then
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config[:type] = $1
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when /^\s*REMOTE_USER\s*=\s*(.*)\s*$/ then
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config[:user] = $1
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when /^\s*REMOTE_PORT\s*=\s*(.*)\s*$/ then
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config[:port] = $1.to_i
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when /^\s*REMOTE_HOST\s*=\s*(.*)\s*$/ then
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config[:host] = $1
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when /^\s*REMOTE_CYPHER\s*=\s*(.*)\s*$/ then
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if CYPHERS.map(&:to_s).include? $1 then
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config[:cypher] = $1.to_sym
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end
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when /^\s*MAP\s*=\s*(.*)\s+(.*)\s*$/ then
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config[:links] ||= {}
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config[:links][$1] = $2
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when /^\s*$/,/^\s*#/ then
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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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map = Ssh.new config, filename
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return map
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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 to_file 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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module_function :from_file,
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:env_substitute,
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:class_for
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end ; end
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