#!/bin/sh

###############################################################################
#
# Check liblzma.map for certain types of errors
#
# Author: Lasse Collin
#
# This file has been put into the public domain.
# You can do whatever you want with this file.
#
###############################################################################

setglobal LC_ALL = 'C'
export LC_ALL

setglobal STATUS = '0'

cd $[dirname $0]

# Get the list of symbols that aren't defined in liblzma.map.
setglobal SYMS = $[sed -n 's/^extern LZMA_API([^)]*) \([a-z0-9_]*\)(.*$/\1;/p' \
		api/lzma/*.h \
	| sort \
	| grep -Fve $[sed '/[{}:*]/d;/^$/d;s/^	//' liblzma.map]]

# Check that there are no old alpha or beta versions listed.
setglobal VER = $[cd ../.. && sh build-aux/version.sh]
setglobal NAMES = ''
match $VER {
	with *alpha | *beta
		setglobal NAMES = $[sed -n 's/^.*XZ_\([^ ]*\)\(alpha\|beta\) .*$/\1\2/p' \
			liblzma.map | grep -Fv $VER]
		
}

# Check for duplicate lines. It can catch missing dependencies.
setglobal DUPS = $[sort liblzma.map | sed '/^$/d;/^global:$/d' | uniq -d]

# Print error messages if needed.
if test -n "$SYMS$NAMES$DUPS" {
	echo
	echo 'validate_map.sh found problems from liblzma.map:'
	echo

	if test -n $SYMS {
		echo 'liblzma.map lacks the following symbols:'
		echo $SYMS
		echo
	}

	if test -n $NAMES {
		echo 'Obsolete alpha or beta version names:'
		echo $NAMES
		echo
	}

	if test -n $DUPS {
		echo 'Duplicate lines:'
		echo $DUPS
		echo
	}

	setglobal STATUS = '1'
}

# Exit status is 1 if problems were found, 0 otherwise.
exit "$STATUS"