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#!/bin/bash
#
# cppcheck.sh
# Script to run CppCheck Static Analyzer.
# http://cppcheck.sourceforge.net/
#
# Usage: tools/cppcheck/cppcheck.sh [options] [file]
# Where options can be:
# -a disable suppression list (see $CPPCHECK_DIR/suppressions)
# -c colorize html output
# -h html output (default is gcc)
# -x xml output (default is gcc)
# -j n threads (default: 4)
# -l n check files from the last [n] commits
# -o check modified files
# -v quiet mode
# If argument file is omitted then checking all files in the current directory.
#
# Wireshark - Network traffic analyzer
# By Gerald Combs <gerald@wireshark.org>
# Copyright 2012 Gerald Combs
#
# SPDX-License-Identifier: GPL-2.0-or-later
#
CPPCHECK=$(type -p cppcheck)
CPPCHECK_DIR=$(dirname "$0")
if [ -z "$CPPCHECK" ] ; then
echo "cppcheck not found"
exit 1
fi
THREADS=4
LAST_COMMITS=0
TARGET=""
QUIET="--quiet"
SUPPRESSIONS="--suppressions-list=$CPPCHECK_DIR/suppressions"
INCLUDES="--includes-file=$CPPCHECK_DIR/includes"
MODE="gcc"
COLORIZE_HTML_MODE="no"
OPEN_FILES="no"
XML_ARG=""
colorize_worker()
{
# always uses stdin/stdout
[ "$COLORIZE_HTML_MODE" = "yes" ] && \
sed -e '/<td>warning<\/td>/s/^<tr>/<tr bgcolor="#ff3">/' \
-e '/<td>error<\/td>/s/^<tr>/<tr bgcolor="#faa">/' \
|| sed ''
}
# switcher
colorize()
{
[ -z "$1" ] && colorize_worker || colorize_worker <<< "$1"
}
exit_cleanup() {
if [ "$MODE" = "html" ]; then
echo "</table></body></html>"
fi
if [ -n "$1" ] ; then
exit "$1"
fi
}
while getopts "achxj:l:ov" OPTCHAR ; do
case $OPTCHAR in
a) SUPPRESSIONS=" " ;;
c) COLORIZE_HTML_MODE="yes" ;;
h) MODE="html" ;;
x) MODE="xml" ;;
j) THREADS="$OPTARG" ;;
l) LAST_COMMITS="$OPTARG" ;;
o) OPEN_FILES="yes" ;;
v) QUIET=" " ;;
*) printf "Unknown option %s" "$OPTCHAR"
esac
done
shift $(( OPTIND - 1 ))
if [ "$MODE" = "gcc" ]; then
TEMPLATE="gcc"
elif [ "$MODE" = "html" ]; then
echo "<html><body><table border=1>"
echo "<tr><th>File</th><th>Line</th><th>Severity</th>"
echo "<th>Message</th><th>ID</th></tr>"
TEMPLATE="<tr><td>{file}</td><td>{line}</td><td>{severity}</td><td>{message}</td><td>{id}</td></tr>"
fi
# Ensure that the COLORIZE_HTML_MODE option is used only with HTML-mode and not with GCC-mode.
[ "$MODE" = "html" ] && [ "$COLORIZE_HTML_MODE" = "yes" ] || COLORIZE_HTML_MODE="no"
if [ "$LAST_COMMITS" -gt 0 ] ; then
TARGET=$( git diff --name-only --diff-filter=d HEAD~"$LAST_COMMITS".. | grep -E '\.(c|cpp)$' )
if [ -z "${TARGET//[[:space:]]/}" ] ; then
>&2 echo "No C or C++ files found in the last $LAST_COMMITS commit(s)."
exit_cleanup 0
fi
fi
if [ "$OPEN_FILES" = "yes" ] ; then
TARGET=$(git diff --name-only | grep -E '\.(c|cpp)$' )
TARGET="$TARGET $(git diff --staged --name-only | grep -E '\.(c|cpp)$' )"
if [ -z "${TARGET//[[:space:]]/}" ] ; then
>&2 echo "No C or C++ files are currently opened (modified or added for next commit)."
exit_cleanup 0
fi
fi
if [ $# -gt 0 ]; then
TARGET="$TARGET $*"
fi
if [ -z "$TARGET" ] ; then
TARGET=.
fi
if [ "$MODE" = "xml" ]; then
XML_ARG="--xml"
fi
# Use a little-documented feature of the shell to pass SIGINTs only to the
# child process (cppcheck in this case). That way the final 'echo' still
# runs and we aren't left with broken HTML.
trap : INT
if [ "$QUIET" = " " ]; then
echo "Examining:"
echo $TARGET
echo
fi
# shellcheck disable=SC2086
$CPPCHECK --force --enable=style $QUIET \
$SUPPRESSIONS $INCLUDES \
-i doc/ \
-i epan/dissectors/asn1/ \
--std=c11 --template=$TEMPLATE \
-j $THREADS $TARGET $XML_ARG 2>&1 | colorize
exit_cleanup
#
# Editor modelines - https://www.wireshark.org/tools/modelines.html
#
# Local variables:
# c-basic-offset: 4
# tab-width: 8
# indent-tabs-mode: nil
# End:
#
# vi: set shiftwidth=4 tabstop=8 expandtab:
# :indentSize=4:tabSize=8:noTabs=true:
#
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