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## https://github.com/mpapis/mpapis_test/blob/master/variables_list.sh
## Examples BASH:
#~ USER=vagrant
#~ _=
#~ array2=([0]="four" [1]="five" [2]="six" [10]="ten")
#~ variable1='play'\''me'
#~ variable2=$'play\n with\n me\n now'
## Examples ZSH:
#~ FIGNORE=''
#~ USER=vagrant
#~ array2=(four five six '' '' '' '' '' '' ten)
#~ variable1='play'\''me'
#~ variable2='play
#~ with
#~ me
#~ now'
require 'shellwords'
class TF::Environment
HANDLER=<<EOF.gsub(/\n/,'')
set | awk -F= '
BEGIN{v=0;}
/^[a-zA-Z_][a-zA-Z0-9_]*=/{v=1;}
v==1&&$2~/^['\\''\\$]/{v=2;}
v==1&&$2~/^\\(/{v=3;}
v==2&&/'\\''$/&&!/'\\'\\''$/{v=1;}
v==3&&/\\)$/{v=1;}
v{print;}
v==1{v=0;}
'
EOF
class << self
def show_env_command
TF::Environment::HANDLER
end
def parse_env output
env = []
holder=nil
terminator=nil
output.each do |line|
line.chomp!
if holder.nil?
if line =~ /^[^=]+=([\('\$]?)/
holder = line
if $1 && !$1.empty?
terminator = $1.sub(/\$/,"'").sub(/\(/,")")
end
elsif line =~ /^[^=]*=/
holder = line
terminator=nil
else
$stderr.puts "Unknown environment token: #{line}." if ENV["TF_DEBUG"]
end
else
holder += line
end
if terminator && line.chars.to_a.last == terminator
terminator=nil
end
if holder && terminator.nil?
env << parse_var( holder.strip )
holder=nil
end
end
Hash[ env ]
end
def parse_var definition
definition =~ /\A([^=]*)=([$]?[\(']?)(.*?)([\)']?)\z/m
name = $1
type1 = $2
value = $3
type2 = $4
case type2
when ')'
parse_array( name, value.shellsplit.map{|v|v.gsub(/'\''/,'\'')} )
else
[ name, value.gsub(/'\''/,'\'') ]
end
end
def parse_array name, value
if value[0] && value[0].chars.to_a.first == '['
value = value.map do |string|
string =~ /\[([^\]]+)\]=(.*)/m
[ $1, $2 ]
end
else
value = value.to_enum.with_index.map{|v,i|[(i+1).to_s,v]}.to_a
# TODO: zsh -c 'typeset -A arr; arr[ala]=1; arr[kot]=2; set | grep -a ^arr=' => arr=(ala 1 kot 2 ) - space on the end
end
[ name, Hash[ value ] ]
end
end
end
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