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+#!/bin/sh
+# Copyright 2013, Alexis La Goutte (See AUTHORS file)
+#
+# For git user: copy tools/pre-commit to .git/hooks/ folder and make it
+# executable. To bypass it for a single commit, use the --no-verify argument.
+# Using --no-verify will then fail during git review because of a missing
+# ChangeID. Fix that by running git review -i. Do not use -i during normal
+# operation.
+#
+# Alternatively, invoke it directly with the commit ID. Example for checking the
+# last commit:
+#
+#   tools/pre-commit HEAD~
+#
+# Relative paths are also supported. For instance, if you are in epan/, then you
+# could invoke  `../tools/pre-commit HEAD` to check for changes to staged files.
+#
+# From
+# http://mark-story.com/posts/view/using-git-commit-hooks-to-prevent-stupid-mistakes
+#
+
+# If the commit identifier is not given, use HEAD instead.
+COMMIT_ID="${1:-HEAD}"
+
+UNAME=$( uname -a )
+
+case "$UNAME" in
+    *\ Msys)
+        pyvar="pythonw.exe"
+        ;;
+    *)
+        pyvar="python3"
+        ;;
+esac
+
+PYBIN=${WS_GITHOOK_PYTHON:-$pyvar}
+
+# Path to hook script in the .git directory
+hook_script=${GIT_DIR:-.git}/hooks/pre-commit
+
+# Always start in the root directory of the source tree, this allows for
+# invocations via relative paths (such as ../tools/pre-commit):
+if ! cd "$(git rev-parse --show-toplevel)" ; then
+    echo "Can't change to the top-level source directory."
+    exit 1
+fi
+
+# Check for newer (actually, different) versions of the pre-commit script
+# (but only if invoked as hook, i.e. the commit ID is not given as argument).
+if [ -z "$1" ] && [ -f "$hook_script" ]; then
+    if ! cmp -s "$hook_script" tools/pre-commit; then
+        echo "Pre-commit hook script is outdated, please update! (cp tools/pre-commit ${hook_script})"
+    fi
+fi
+
+exit_status=0
+
+COMMIT_FILES=$( git diff-index --cached --name-status "${COMMIT_ID}" | grep -v "^D" | cut -f2 | grep "\\.[ch]$" )
+DIAMETER_FILES=$( git diff-index --cached --name-status "${COMMIT_ID}" | grep -v "^D" | cut -f2 | grep diameter/ )
+
+# Path to filter script in the tools directory
+filter_script=${PWD}/tools/pre-commit-ignore.py
+filter_conf=${PWD}/tools/pre-commit-ignore.conf
+
+if [ -f "$filter_script" ] && [ -f "$filter_conf" ]; then
+    CHECK_FILES=$( echo "$COMMIT_FILES" | "$PYBIN" "$filter_script" "$filter_conf" ) || exit
+else
+    CHECK_FILES="$COMMIT_FILES"
+fi
+
+bad_alloc_patterns=${PWD}/tools/detect_bad_alloc_patterns.py
+echo "$COMMIT_FILES" | $PYBIN "$bad_alloc_patterns"
+
+# On windows python will output \r\n line endings - we don't want that.
+#
+# Do not use sed, as not all versions of sed support \r as meaning CR
+# in a regexp - the only version that does so might be GNU sed; the
+# GNU sed documentation says that only \n and \\ can be used in a
+# portable script.
+#
+# The Single UNIX Specification says that tr supports \r; most if not
+# all modern UN*Xes should support it.
+CHECK_FILES=$( echo "$CHECK_FILES" | tr -d '\r' )
+
+for FILE in $CHECK_FILES; do
+    # Skip some special cases
+    FILE_BASENAME="$( basename "$FILE" )"
+    # This should only be done on code that's part of one or more
+    # Wireshark programs; idl2wrs.c is a developer tool, not a
+    # Wireshark program, so these tests don't apply.
+    if test "$FILE_BASENAME" = "idl2wrs.c"
+    then
+        continue
+    fi
+    if test "$FILE_BASENAME" = "wmem_test.c"
+    then
+        continue
+    fi
+
+    #Check if checkhf is good
+    ./tools/checkhf.pl "$FILE"            || exit_status=1
+
+    #Check if checkAPIs is good
+    ./tools/checkAPIs.pl -p "$FILE"       || exit_status=1
+
+    #Check if fix-encoding-args is good
+    ./tools/fix-encoding-args.pl "$FILE"  || exit_status=1
+
+    #Check if checkfiltername is good
+    ./tools/checkfiltername.pl "$FILE"    || exit_status=1
+
+    # If there are whitespace errors, print the offending file names and fail. (from git pre-commit.sample)
+    git diff-index --check --cached "${COMMIT_ID}" "$FILE" || exit_status=1
+
+done
+
+if [ "x$DIAMETER_FILES" != x ]
+then
+    ./tools/validate-diameter-xml.sh > /dev/null || exit_status=1
+fi
+
+exit $exit_status
+
+#
+#  Editor modelines
+#
+#  Local Variables:
+#  c-basic-offset: 4
+#  tab-width: 8
+#  indent-tabs-mode: nil
+#  End:
+#
+#  ex: set shiftwidth=4 tabstop=8 expandtab:
+#  :indentSize=4:tabSize=8:noTabs=true:
+#