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#!/bin/bash
#
# Copyright 2017 The ChromiumOS Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
excludes=( --exclude-dir=build --exclude=TAGS )
#######################################
# Test if the following conditions hold for the ec host command
# The alpha numeric value of the define starts with 0x
# The alpha numeric value of the define is 4-hex digits
# The hex digits "A B C D E F" are capitalized
# Arguments:
# string - ec host command to check
# Returns:
# 0 if command is ok, else 1
########################################
check_cmd() {
IFS=" "
# Remove any tabs that may exist
tts=$(echo "$1" | sed 's/\t/ /g')
arr=( $tts )
# Check for 0x
if [[ "${arr[2]}" != 0x* ]]; then
return 1
fi
# Check that length is 6. 0x + 4 hex digits
if [[ ${#arr[2]} != 6 ]]; then
return 1
fi
# Check that hex digits are valid and uppercase
hd=${arr[2]:2}
if ! [[ $hd =~ ^[0-9A-F]{4}$ ]]; then
return 1
fi
# command is ok
return 0
}
#######################################
# Test if the string arg is in one of the following formats:
# file.X:#define EC_CMD_X XxXXXX
# file.X:#define EC_PRV_CMD_X XxXXXX
# Arguments:
# string - potential ec host command
# Returns:
# 0 if command is formated properly, else 1
########################################
should_check() {
IFS=" "
arr=( $1 )
# Check for file.X:#define
IFS=":"
temp=( ${arr[0]} )
# Check for file.X
if [ ! -f "${temp[0]}" ]; then
return 1
fi
# Check for #define
if [[ "${temp[1]}" != "#define" ]]; then
return 1
fi
# Check for EC_CMD_XXX or EC_PRV_CMD_XXX
if [[ "${arr[1]}" != EC_CMD_* ]] && [[ "${arr[1]}" != EC_PRV_CMD_* ]]; then
return 1
fi
# Check for EC_XXX_XXX(n)
if [[ "${arr[1]}" =~ ')'$ ]]; then
return 1
fi
return 0
}
main() {
# Do not run the check unless an EC_[xxx]CMD change is present.
if [[ -z "$(git diff --no-ext-diff "${PRESUBMIT_COMMIT}~" \
"${PRESUBMIT_COMMIT}" -U0 |
egrep 'EC_[^ ]*CMD')" ]]; then
exit 0
fi
ec_errors=()
ei=0
# Search all file occurrences of "EC_CMD" and store in array
IFS=$'\n'
ec_cmds=($(grep "${excludes[@]}" -r "EC_CMD"))
# Loop through and find valid occurrences of "EC_CMD" to check
length=${#ec_cmds[@]}
for ((i = 0; i != length; i++)); do
if should_check "${ec_cmds[i]}"; then
if ! check_cmd "${ec_cmds[i]}"; then
ec_errors[$ei]="${ec_cmds[i]}"
((ei++))
fi
fi
done
# Search all file occurrances of "EC_PRV_CMD" and store in array
IFS=$'\n'
ec_prv_cmds=($(grep "${excludes[@]}" -r "EC_PRV_CMD"))
# Loop through and find valid occurrences of "EC_PRV_CMD" to check
length=${#ec_prv_cmds[@]}
for ((i = 0; i != length; i++)); do
if should_check "${ec_prv_cmds[i]}"; then
if ! check_cmd "${ec_prv_cmds[i]}"; then
ec_errors[$ei]="${ec_prv_cmds[i]}"
((ei++))
fi
fi
done
# Check if any malformed ec host commands were found
if [ ! $ei -eq 0 ]; then
echo "The following host commands are malformed:"
# print all malformed host commands
for ((i = 0; i != ei; i++)); do
echo "FILE: ${ec_errors[i]}"
done
exit 1
fi
exit 0
}
main "$@"
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