#!/bin/bash

#
# We prefer "new" AWK unless of course there isn't one, in which case we
# assume that awk is new AWK.
#
awk=`which nawk`

if [[ -z $awk ]]; then
	awk=`which awk`
fi

for file in $*; do
	cat $file | $awk "\
		/#ifdef/{ if (inif) { nest++; } }
		/#ifdef XXX/{
			if (inif) {
				print \"$file: recursive XXX at \" FNR ;
				errs++;
			}
			inif = 1;
			nest = 0;
		}
		/#ifdef XXX_KVM_STAT/{ inif = 0 }
		/#ifdef XXX_KVM_TRACE/{ inif = 0 }
		/#ifdef XXX_KVM_DOESNTCOMPILE/{ inif = 0 }
		/#ifdef XXX_KVM_DECLARATION/{ inif = 0 }
		/#else/{ if (inif && !nest) { foundelse = 1; } }
		/XXX_KVM_PROBE;/{ if (inif && foundelse) { foundprobe = 1; } }
		/XXX_KVM_SYNC_PROBE;/{ if (inif && foundelse) { foundprobe = 1; } }
		/#endif/{
			if (inif && nest) {
				nest--;
			} else {
				if (inif && !foundelse) {
					print \"$file: missing #else at \" \
					    FNR ;
					errs++;
				} else if (inif && !foundprobe) {
					print \"$file: missing \" \
					    \"XXX_KVM_PROBE; at \" FNR ;
					errs++;
				}
				if (inif) { inif = foundelse = foundprobe = 0; }
			}
		}
		END { exit(errs); }"

	errs=$?

	if [[ $errs -ne 0 ]]; then
		echo $file: $errs errors
		exit 1
	fi
done