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#!/bin/bash
#
# This script tries to format a single file with uncrustify-trinity
# using the specified configuration file and until there are no
# further changes, up to the maximum number of times specified.
#
# Parameters:
# $1: config file to use
# $2: source file to format
# $3: maximum number of formatting attempts (optional integer - default is 5)
# Use 0 to just validate whether a file adhere to the required code format
#
# Check uncrustify-trinity location
UNCRUSTIFY_BIN=""
if [ -x "/opt/trinity/bin/uncrustify-trinity" ]; then
UNCRUSTIFY_BIN="/opt/trinity/bin/uncrustify-trinity"
elif [ -x "/usr/bin/uncrustify-trinity" ]; then
UNCRUSTIFY_BIN="/usr/bin/uncrustify-trinity"
elif [ -x "/usr/local/bin/uncrustify-trinity" ]; then
UNCRUSTIFY_BIN="/usr/local/bin/uncrustify-trinity"
fi
if [ "${UNCRUSTIFY_BIN}" = "" ]; then
echo "[UF] --- Unable to find uncrustify-trinity executable. Aborting."
exit 1
fi
# Check config file exists
CFG_FILE=$1
if [ ! -e "$1" ]; then
echo "[UF] --- Unable to find the specified configuration file [${CFG_FILE}]. Aborting."
exit 2
fi
# Check source file exists
SRC_FILE=$2
if [ ! -e "$2" ]; then
echo "[UF] --- Unable to find the specified source file [${SRC_FILE}]. Aborting."
exit 3
fi
# Setup intermediate file names
FMT_SRC_FILE="${SRC_FILE%.*}_uncrusted_src.${SRC_FILE##*.}"
FMT_DST_FILE="${SRC_FILE%.*}_uncrusted_dst.${SRC_FILE##*.}"
# Validate the number of retries, if specified
NUM_ATTEMPTS=5 # default, if not specified
if [ "$3" != "" ]; then
NUM_ATTEMPTS=$(($3))
if [ ${NUM_ATTEMPTS} -lt 0 ]; then
echo "[UF] --- The number of attempts [${NUM_ATTEMPTS}] must be zero or more. Aborting."
exit 4
fi
fi
REAL_NUM_ATTEMPTS=$((${NUM_ATTEMPTS} + 1))
# Format file and check for errors
# Each pass formats FMT_SRC_FILE into FMT_DST_FILE.
# If there are no errors, a check for changes is done and
# if there are no changes since the previous pass, the process stops.
# If changes are detected, the process continue with a new pass
# until either there are no more changes of the maximum number of
# attempts has been reached.
# At each new pass, the last FMT_DST_FILE becomes the new FMT_SRC_FILE.
echo "[UF] Processing file ${SRC_FILE}"
cp "${SRC_FILE}" "${FMT_SRC_FILE}"
FINISHED="n"
COUNTER=0
while [ "${FINISHED}" != "y" -a ${COUNTER} -lt ${REAL_NUM_ATTEMPTS} ]; do
COUNTER=$((${COUNTER} + 1))
echo "[UF] Pass ${COUNTER}"
${UNCRUSTIFY_BIN} -c "${CFG_FILE}" -f "$FMT_SRC_FILE" -o "${FMT_DST_FILE}"
RESULT=$?
if [ ! ${RESULT} -eq 0 ]; then
echo "[UF] --- Processing error reported by uncrustify-trinity [error code ${RESULT}]"
rm "${FMT_SRC_FILE}" 2>/dev/null
rm "${FMT_DST_FILE}" 2>/dev/null
exit 5
fi
# Check for changes
if cmp -s "${FMT_SRC_FILE}" "${FMT_DST_FILE}"; then
# No changes detected
FINISHED="y"
else
# Changes detected, prepare for next pass
mv "${FMT_DST_FILE}" "${FMT_SRC_FILE}"
fi
done
# If a stable formatted output is achieved within the maximum number
# of attempts allowed, update the source file and exit successfully.
# Otherwise remove all the temporary files and exit with error.
if [ "${FINISHED}" != "y" ]; then
if [ ${NUM_ATTEMPTS} -eq 0 ]; then
echo "[UF] --- Code format verification FAILED."
else
echo "[UF] --- Unable to reach stable formatted code in ${NUM_ATTEMPTS} attempts."
fi
rm "${FMT_SRC_FILE}" 2>/dev/null
rm "${FMT_DST_FILE}" 2>/dev/null
exit 6
fi
if [ $COUNTER -gt 1 ]; then
# Only update the file if there were actual changes (COUNTER > 1)
# to avoid updating the modified time unnecessarily
mv "${FMT_DST_FILE}" "${SRC_FILE}"
else
rm "${FMT_DST_FILE}"
fi
rm "${FMT_SRC_FILE}" 2>/dev/null
if [ ${NUM_ATTEMPTS} -eq 0 ]; then
echo "[UF] Code format verification OK."
fi
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