Use docker so that you can clang-format using version 15 everywhere you are. (#585)

* Use docker so that you can clang-format using version 15 everywhere you are.

* cleaning/simplifying

* setting version to 15

* silencing command not found

* changing repo

Author: lemire

clang-format-ignore.txt

@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+set -e
+COMMAND=$*
+SCRIPTPATH="$( cd "$(dirname "$0")" ; pwd -P )"
+MAINSOURCE=$SCRIPTPATH/..
+ALL_ADA_FILES=$(cd $MAINSOURCE && git ls-tree --full-tree --name-only -r HEAD | grep -e ".*\.\(c\|h\|cc\|cpp\|hh\)\$" | grep -vFf clang-format-ignore.txt)
+
+if clang-format-15 --version  2>/dev/null | grep -qF 'version 15.'; then
+  cd $MAINSOURCE; clang-format-15 --style=file --verbose -i "$@" $ALL_ADA_FILES
+  exit 0
+elif clang-format --version  2>/dev/null | grep -qF 'version 15.'; then
+  cd $MAINSOURCE; clang-format --style=file --verbose -i "$@" $ALL_ADA_FILES
+  exit 0
+fi
+echo "Trying to use docker"
+command -v docker >/dev/null 2>&1 || { echo >&2 "Please install docker. E.g., go to https://www.docker.com/products/docker-desktop Type 'docker' to diagnose the problem."; exit 1; }
+docker info >/dev/null 2>&1 || { echo >&2 "Docker server is not running? type 'docker info'."; exit 1; }
+
+if [ -t 0 ]; then DOCKER_ARGS=-it; fi
+docker pull kszonek/clang-format-15
+
+docker run --rm $DOCKER_ARGS -v "$MAINSOURCE":"$MAINSOURCE":Z  -w "$MAINSOURCE" -u "$(id -u $USER):$(id -g $USER)" kszonek/clang-format-15 --style=file --verbose -i "$@" $ALL_ADA_FILES
+
+