#!/bin/bash
# Usage: configcheck.sh .config .config-template
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, you can access it online at
# http://www.gnu.org/licenses/gpl-2.0.html.
#
# Copyright (C) IBM Corporation, 2011
#
# Authors: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

global T := "/tmp/abat-chk-config.sh.$Pid"
trap 'rm -rf $T' 0
mkdir $T

cat $1 > $T/.config

cat $2 | sed -e 's/\(.*\)=n/# \1 is not set/' -e 's/^#CHECK#//' |
awk	'
BEGIN	{
		print "if grep -q \"" $0 "\" < '"$T/.config"'";
		print "then";
		print "\t:";
		print "else";
		if ($1 == "#") {
			print "\tif grep -q \"" $2 "\" < '"$T/.config"'";
			print "\tthen";
			print "\t\tif test \"$firsttime\" = \"\""
			print "\t\tthen"
			print "\t\t\tfirsttime=1"
			print "\t\tfi"
			print "\t\techo \":" $2 ": improperly set\"";
			print "\telse";
			print "\t\t:";
			print "\tfi";
		} else {
			print "\tif test \"$firsttime\" = \"\""
			print "\tthen"
			print "\t\tfirsttime=1"
			print "\tfi"
			print "\techo \":" $0 ": improperly set\"";
		}
		print "fi";
	}' | sh
(CommandList
  children: [
    (Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (LhsName name:T)
          op: Equal
          rhs: {(/tmp/abat-chk-config.sh.) ($ VSub_Dollar "$$")}
          spids: [61]
        )
      ]
      spids: [61]
    )
    (C {(trap)} {(SQ <"rm -rf $T">)} {(0)})
    (C {(mkdir)} {($ VSub_Name "$T")})
    (SimpleCommand
      words: [{(cat)} {($ VSub_Number "$1")}]
      redirects: [(Redir op_id:Redir_Great fd:-1 arg_word:{($ VSub_Name "$T") (/.config)} spids:[82])]
    )
    (Pipeline
      children: [
        (C {(cat)} {($ VSub_Number "$2")})
        (C {(sed)} {(-e)} {(SQ <"s/\\(.*\\)=n/# \\1 is not set/">)} {(-e)} {(SQ <"s/^#CHECK#//">)})
        (C {(awk)} 
          {(SQ <"\n"> <"BEGIN\t{\n"> <"\t\tprint \"if grep -q \\\"\" $0 \"\\\" < ">) 
            (DQ ($ VSub_Name "$T") (/.config)) 
            (SQ <"\";\n"> <"\t\tprint \"then\";\n"> <"\t\tprint \"\\t:\";\n"> <"\t\tprint \"else\";\n"> 
              <"\t\tif ($1 == \"#\") {\n"> <"\t\t\tprint \"\\tif grep -q \\\"\" $2 \"\\\" < ">
            ) (DQ ($ VSub_Name "$T") (/.config)) 
            (SQ <"\";\n"> <"\t\t\tprint \"\\tthen\";\n"> 
              <"\t\t\tprint \"\\t\\tif test \\\"$firsttime\\\" = \\\"\\\"\"\n"> <"\t\t\tprint \"\\t\\tthen\"\n"> <"\t\t\tprint \"\\t\\t\\tfirsttime=1\"\n"> 
              <"\t\t\tprint \"\\t\\tfi\"\n"> <"\t\t\tprint \"\\t\\techo \\\":\" $2 \": improperly set\\\"\";\n"> <"\t\t\tprint \"\\telse\";\n"> 
              <"\t\t\tprint \"\\t\\t:\";\n"> <"\t\t\tprint \"\\tfi\";\n"> <"\t\t} else {\n"> 
              <"\t\t\tprint \"\\tif test \\\"$firsttime\\\" = \\\"\\\"\"\n"> <"\t\t\tprint \"\\tthen\"\n"> <"\t\t\tprint \"\\t\\tfirsttime=1\"\n"> <"\t\t\tprint \"\\tfi\"\n"> 
              <"\t\t\tprint \"\\techo \\\":\" $0 \": improperly set\\\"\";\n"> <"\t\t}\n"> <"\t\tprint \"fi\";\n"> <"\t}">
            )
          }
        )
        (C {(sh)})
      ]
      negated: False
    )
  ]
)