#!/bin/sh
#
# This file is part of mbed TLS (https://tls.mbed.org)
#
# Copyright (c) 2015-2016, ARM Limited, All Rights Reserved
#
# Purpose
#
# This script confirms that the naming of all symbols and identifiers in mbed
# TLS are consistent with the house style and are also self-consistent.
#
set -eu

if grep --version|head -n1|grep GNU >/dev/null; then :; else
    echo "This script requires GNU grep.">&2
    exit 1
fi

printf "Analysing source code...\n"

tests/scripts/list-macros.sh
tests/scripts/list-enum-consts.pl
tests/scripts/list-identifiers.sh
tests/scripts/list-symbols.sh

FAIL=0

printf "\nExported symbols declared in header: "
UNDECLARED=$(diff exported-symbols identifiers | sed -n -e 's/^< //p') > undeclared

FILTERED=$( diff tests/scripts/whitelist undeclared | sed -n -e 's/^< //p')

if [ "x$UNDECLARED" != "x" ]; then
if [ "x$FILTERED" = "x" ]; then
    echo "PASS"
else
    echo "FAIL"
    echo "$FILTERED"
    FAIL=1
fi
else
    echo "PASS"
fi

diff macros identifiers | sed -n -e 's/< //p' > actual-macros

for THING in actual-macros enum-consts; do
    printf "Names of $THING: "
    test -r $THING
    BAD=$( grep -v '^MBEDTLS_[0-9A-Z_]*[0-9A-Z]$' $THING || true )
    if [ "x$BAD" = "x" ]; then
        echo "PASS"
    else
        echo "FAIL"
        echo "$BAD"
        FAIL=1
    fi
done

for THING in identifiers; do
    printf "Names of $THING: "
    test -r $THING
    BAD=$( grep -v '^mbedtls_[0-9a-z_]*[0-9a-z]$' $THING || true )
    if [ "x$BAD" = "x" ]; then
        echo "PASS"
    else
        echo "FAIL"
        echo "$BAD"
        FAIL=1
    fi
done

printf "Likely typos: "
sort -u actual-macros enum-consts > _caps
HEADERS=$( ls include/mbedtls/*.h | egrep -v 'compat-1\.3\.h' )
NL='
'
sed -n 's/MBED..._[A-Z0-9_]*/\'"$NL"'&\'"$NL"/gp \
    $HEADERS library/*.c \
    | grep MBEDTLS | sort -u > _MBEDTLS_XXX
TYPOS=$( diff _caps _MBEDTLS_XXX | sed -n 's/^> //p' \
            | egrep -v 'XXX|__|_$|^MBEDTLS_.*CONFIG_FILE$' || true )
rm _MBEDTLS_XXX _caps
if [ "x$TYPOS" = "x" ]; then
    echo "PASS"
else
    echo "FAIL"
    echo "$TYPOS"
    FAIL=1
fi

printf "\nOverall: "
if [ "$FAIL" -eq 0 ]; then
    rm macros actual-macros enum-consts identifiers exported-symbols undeclared
    echo "PASSED"
    exit 0
else
    echo "FAILED"
    exit 1
fi