🎉 Initial Commit

.gitignore

@@ -0,0 +1,33 @@
+HELP.md
+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/

.mvn/wrapper/maven-wrapper.properties

@@ -0,0 +1,2 @@
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.5/apache-maven-3.9.5-bin.zip
+wrapperUrl=https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.2.0/maven-wrapper-3.2.0.jar

mvnw

@@ -0,0 +1,308 @@
+#!/bin/sh
+# ----------------------------------------------------------------------------
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#    https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+# ----------------------------------------------------------------------------
+
+# ----------------------------------------------------------------------------
+# Apache Maven Wrapper startup batch script, version 3.2.0
+#
+# Required ENV vars:
+# ------------------
+#   JAVA_HOME - location of a JDK home dir
+#
+# Optional ENV vars
+# -----------------
+#   MAVEN_OPTS - parameters passed to the Java VM when running Maven
+#     e.g. to debug Maven itself, use
+#       set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+#   MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+# ----------------------------------------------------------------------------
+
+if [ -z "$MAVEN_SKIP_RC" ] ; then
+
+  if [ -f /usr/local/etc/mavenrc ] ; then
+    . /usr/local/etc/mavenrc
+  fi
+
+  if [ -f /etc/mavenrc ] ; then
+    . /etc/mavenrc
+  fi
+
+  if [ -f "$HOME/.mavenrc" ] ; then
+    . "$HOME/.mavenrc"
+  fi
+
+fi
+
+# OS specific support.  $var _must_ be set to either true or false.
+cygwin=false;
+darwin=false;
+mingw=false
+case "$(uname)" in
+  CYGWIN*) cygwin=true ;;
+  MINGW*) mingw=true;;
+  Darwin*) darwin=true
+    # Use /usr/libexec/java_home if available, otherwise fall back to /Library/Java/Home
+    # See https://developer.apple.com/library/mac/qa/qa1170/_index.html
+    if [ -z "$JAVA_HOME" ]; then
+      if [ -x "/usr/libexec/java_home" ]; then
+        JAVA_HOME="$(/usr/libexec/java_home)"; export JAVA_HOME
+      else
+        JAVA_HOME="/Library/Java/Home"; export JAVA_HOME
+      fi
+    fi
+    ;;
+esac
+
+if [ -z "$JAVA_HOME" ] ; then
+  if [ -r /etc/gentoo-release ] ; then
+    JAVA_HOME=$(java-config --jre-home)
+  fi
+fi
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched
+if $cygwin ; then
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=$(cygpath --unix "$JAVA_HOME")
+  [ -n "$CLASSPATH" ] &&
+    CLASSPATH=$(cygpath --path --unix "$CLASSPATH")
+fi
+
+# For Mingw, ensure paths are in UNIX format before anything is touched
+if $mingw ; then
+  [ -n "$JAVA_HOME" ] && [ -d "$JAVA_HOME" ] &&
+    JAVA_HOME="$(cd "$JAVA_HOME" || (echo "cannot cd into $JAVA_HOME."; exit 1); pwd)"
+fi
+
+if [ -z "$JAVA_HOME" ]; then
+  javaExecutable="$(which javac)"
+  if [ -n "$javaExecutable" ] && ! [ "$(expr "\"$javaExecutable\"" : '\([^ ]*\)')" = "no" ]; then
+    # readlink(1) is not available as standard on Solaris 10.
+    readLink=$(which readlink)
+    if [ ! "$(expr "$readLink" : '\([^ ]*\)')" = "no" ]; then
+      if $darwin ; then
+        javaHome="$(dirname "\"$javaExecutable\"")"
+        javaExecutable="$(cd "\"$javaHome\"" && pwd -P)/javac"
+      else
+        javaExecutable="$(readlink -f "\"$javaExecutable\"")"
+      fi
+      javaHome="$(dirname "\"$javaExecutable\"")"
+      javaHome=$(expr "$javaHome" : '\(.*\)/bin')
+      JAVA_HOME="$javaHome"
+      export JAVA_HOME
+    fi
+  fi
+fi
+
+if [ -z "$JAVACMD" ] ; then
+  if [ -n "$JAVA_HOME"  ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+      # IBM's JDK on AIX uses strange locations for the executables
+      JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+      JAVACMD="$JAVA_HOME/bin/java"
+    fi
+  else
+    JAVACMD="$(\unset -f command 2>/dev/null; \command -v java)"
+  fi
+fi
+
+if [ ! -x "$JAVACMD" ] ; then
+  echo "Error: JAVA_HOME is not defined correctly." >&2
+  echo "  We cannot execute $JAVACMD" >&2
+  exit 1
+fi
+
+if [ -z "$JAVA_HOME" ] ; then
+  echo "Warning: JAVA_HOME environment variable is not set."
+fi
+
+# traverses directory structure from process work directory to filesystem root
+# first directory with .mvn subdirectory is considered project base directory
+find_maven_basedir() {
+  if [ -z "$1" ]
+  then
+    echo "Path not specified to find_maven_basedir"
+    return 1
+  fi
+
+  basedir="$1"
+  wdir="$1"
+  while [ "$wdir" != '/' ] ; do
+    if [ -d "$wdir"/.mvn ] ; then
+      basedir=$wdir
+      break
+    fi
+    # workaround for JBEAP-8937 (on Solaris 10/Sparc)
+    if [ -d "${wdir}" ]; then
+      wdir=$(cd "$wdir/.." || exit 1; pwd)
+    fi
+    # end of workaround
+  done
+  printf '%s' "$(cd "$basedir" || exit 1; pwd)"
+}
+
+# concatenates all lines of a file
+concat_lines() {
+  if [ -f "$1" ]; then
+    # Remove \r in case we run on Windows within Git Bash
+    # and check out the repository with auto CRLF management
+    # enabled. Otherwise, we may read lines that are delimited with
+    # \r\n and produce $'-Xarg\r' rather than -Xarg due to word
+    # splitting rules.
+    tr -s '\r\n' ' ' < "$1"
+  fi
+}
+
+log() {
+  if [ "$MVNW_VERBOSE" = true ]; then
+    printf '%s\n' "$1"
+  fi
+}
+
+BASE_DIR=$(find_maven_basedir "$(dirname "$0")")
+if [ -z "$BASE_DIR" ]; then
+  exit 1;
+fi
+
+MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-"$BASE_DIR"}; export MAVEN_PROJECTBASEDIR
+log "$MAVEN_PROJECTBASEDIR"
+
+##########################################################################################
+# Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+# This allows using the maven wrapper in projects that prohibit checking in binary data.
+##########################################################################################
+wrapperJarPath="$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar"
+if [ -r "$wrapperJarPath" ]; then
+    log "Found $wrapperJarPath"
+else
+    log "Couldn't find $wrapperJarPath, downloading it ..."
+
+    if [ -n "$MVNW_REPOURL" ]; then
+      wrapperUrl="$MVNW_REPOURL/org/apache/maven/wrapper/maven-wrapper/3.2.0/maven-wrapper-3.2.0.jar"
+    else
+      wrapperUrl="https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.2.0/maven-wrapper-3.2.0.jar"
+    fi
+    while IFS="=" read -r key value; do
+      # Remove '\r' from value to allow usage on windows as IFS does not consider '\r' as a separator ( considers space, tab, new line ('\n'), and custom '=' )
+      safeValue=$(echo "$value" | tr -d '\r')
+      case "$key" in (wrapperUrl) wrapperUrl="$safeValue"; break ;;
+      esac
+    done < "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.properties"
+    log "Downloading from: $wrapperUrl"
+
+    if $cygwin; then
+      wrapperJarPath=$(cygpath --path --windows "$wrapperJarPath")
+    fi
+
+    if command -v wget > /dev/null; then
+        log "Found wget ... using wget"
+        [ "$MVNW_VERBOSE" = true ] && QUIET="" || QUIET="--quiet"
+        if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+            wget $QUIET "$wrapperUrl" -O "$wrapperJarPath" || rm -f "$wrapperJarPath"
+        else
+            wget $QUIET --http-user="$MVNW_USERNAME" --http-password="$MVNW_PASSWORD" "$wrapperUrl" -O "$wrapperJarPath" || rm -f "$wrapperJarPath"
+        fi
+    elif command -v curl > /dev/null; then
+        log "Found curl ... using curl"
+        [ "$MVNW_VERBOSE" = true ] && QUIET="" || QUIET="--silent"
+        if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+            curl $QUIET -o "$wrapperJarPath" "$wrapperUrl" -f -L || rm -f "$wrapperJarPath"
+        else
+            curl $QUIET --user "$MVNW_USERNAME:$MVNW_PASSWORD" -o "$wrapperJarPath" "$wrapperUrl" -f -L || rm -f "$wrapperJarPath"
+        fi
+    else
+        log "Falling back to using Java to download"
+        javaSource="$MAVEN_PROJECTBASEDIR/.mvn/wrapper/MavenWrapperDownloader.java"
+        javaClass="$MAVEN_PROJECTBASEDIR/.mvn/wrapper/MavenWrapperDownloader.class"
+        # For Cygwin, switch paths to Windows format before running javac
+        if $cygwin; then
+          javaSource=$(cygpath --path --windows "$javaSource")
+          javaClass=$(cygpath --path --windows "$javaClass")
+        fi
+        if [ -e "$javaSource" ]; then
+            if [ ! -e "$javaClass" ]; then
+                log " - Compiling MavenWrapperDownloader.java ..."
+                ("$JAVA_HOME/bin/javac" "$javaSource")
+            fi
+            if [ -e "$javaClass" ]; then
+                log " - Running MavenWrapperDownloader.java ..."
+                ("$JAVA_HOME/bin/java" -cp .mvn/wrapper MavenWrapperDownloader "$wrapperUrl" "$wrapperJarPath") || rm -f "$wrapperJarPath"
+            fi
+        fi
+    fi
+fi
+##########################################################################################
+# End of extension
+##########################################################################################
+
+# If specified, validate the SHA-256 sum of the Maven wrapper jar file
+wrapperSha256Sum=""
+while IFS="=" read -r key value; do
+  case "$key" in (wrapperSha256Sum) wrapperSha256Sum=$value; break ;;
+  esac
+done < "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.properties"
+if [ -n "$wrapperSha256Sum" ]; then
+  wrapperSha256Result=false
+  if command -v sha256sum > /dev/null; then
+    if echo "$wrapperSha256Sum  $wrapperJarPath" | sha256sum -c > /dev/null 2>&1; then
+      wrapperSha256Result=true
+    fi
+  elif command -v shasum > /dev/null; then
+    if echo "$wrapperSha256Sum  $wrapperJarPath" | shasum -a 256 -c > /dev/null 2>&1; then
+      wrapperSha256Result=true
+    fi
+  else
+    echo "Checksum validation was requested but neither 'sha256sum' or 'shasum' are available."
+    echo "Please install either command, or disable validation by removing 'wrapperSha256Sum' from your maven-wrapper.properties."
+    exit 1
+  fi
+  if [ $wrapperSha256Result = false ]; then
+    echo "Error: Failed to validate Maven wrapper SHA-256, your Maven wrapper might be compromised." >&2
+    echo "Investigate or delete $wrapperJarPath to attempt a clean download." >&2
+    echo "If you updated your Maven version, you need to update the specified wrapperSha256Sum property." >&2
+    exit 1
+  fi
+fi
+
+MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS"
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin; then
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=$(cygpath --path --windows "$JAVA_HOME")
+  [ -n "$CLASSPATH" ] &&
+    CLASSPATH=$(cygpath --path --windows "$CLASSPATH")
+  [ -n "$MAVEN_PROJECTBASEDIR" ] &&
+    MAVEN_PROJECTBASEDIR=$(cygpath --path --windows "$MAVEN_PROJECTBASEDIR")
+fi
+
+# Provide a "standardized" way to retrieve the CLI args that will
+# work with both Windows and non-Windows executions.
+MAVEN_CMD_LINE_ARGS="$MAVEN_CONFIG $*"
+export MAVEN_CMD_LINE_ARGS
+
+WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+# shellcheck disable=SC2086 # safe args
+exec "$JAVACMD" \
+  $MAVEN_OPTS \
+  $MAVEN_DEBUG_OPTS \
+  -classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \
+  "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \
+  ${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@"

mvnw.cmd

@@ -0,0 +1,205 @@
+@REM ----------------------------------------------------------------------------
+@REM Licensed to the Apache Software Foundation (ASF) under one
+@REM or more contributor license agreements.  See the NOTICE file
+@REM distributed with this work for additional information
+@REM regarding copyright ownership.  The ASF licenses this file
+@REM to you under the Apache License, Version 2.0 (the
+@REM "License"); you may not use this file except in compliance
+@REM with the License.  You may obtain a copy of the License at
+@REM
+@REM    https://www.apache.org/licenses/LICENSE-2.0
+@REM
+@REM Unless required by applicable law or agreed to in writing,
+@REM software distributed under the License is distributed on an
+@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+@REM KIND, either express or implied.  See the License for the
+@REM specific language governing permissions and limitations
+@REM under the License.
+@REM ----------------------------------------------------------------------------
+
+@REM ----------------------------------------------------------------------------
+@REM Apache Maven Wrapper startup batch script, version 3.2.0
+@REM
+@REM Required ENV vars:
+@REM JAVA_HOME - location of a JDK home dir
+@REM
+@REM Optional ENV vars
+@REM MAVEN_BATCH_ECHO - set to 'on' to enable the echoing of the batch commands
+@REM MAVEN_BATCH_PAUSE - set to 'on' to wait for a keystroke before ending
+@REM MAVEN_OPTS - parameters passed to the Java VM when running Maven
+@REM     e.g. to debug Maven itself, use
+@REM set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+@REM MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+@REM ----------------------------------------------------------------------------
+
+@REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on'
+@echo off
+@REM set title of command window
+title %0
+@REM enable echoing by setting MAVEN_BATCH_ECHO to 'on'
+@if "%MAVEN_BATCH_ECHO%" == "on"  echo %MAVEN_BATCH_ECHO%
+
+@REM set %HOME% to equivalent of $HOME
+if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%")
+
+@REM Execute a user defined script before this one
+if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre
+@REM check for pre script, once with legacy .bat ending and once with .cmd ending
+if exist "%USERPROFILE%\mavenrc_pre.bat" call "%USERPROFILE%\mavenrc_pre.bat" %*
+if exist "%USERPROFILE%\mavenrc_pre.cmd" call "%USERPROFILE%\mavenrc_pre.cmd" %*
+:skipRcPre
+
+@setlocal
+
+set ERROR_CODE=0
+
+@REM To isolate internal variables from possible post scripts, we use another setlocal
+@setlocal
+
+@REM ==== START VALIDATION ====
+if not "%JAVA_HOME%" == "" goto OkJHome
+
+echo.
+echo Error: JAVA_HOME not found in your environment. >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+:OkJHome
+if exist "%JAVA_HOME%\bin\java.exe" goto init
+
+echo.
+echo Error: JAVA_HOME is set to an invalid directory. >&2
+echo JAVA_HOME = "%JAVA_HOME%" >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+@REM ==== END VALIDATION ====
+
+:init
+
+@REM Find the project base dir, i.e. the directory that contains the folder ".mvn".
+@REM Fallback to current working directory if not found.
+
+set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR%
+IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir
+
+set EXEC_DIR=%CD%
+set WDIR=%EXEC_DIR%
+:findBaseDir
+IF EXIST "%WDIR%"\.mvn goto baseDirFound
+cd ..
+IF "%WDIR%"=="%CD%" goto baseDirNotFound
+set WDIR=%CD%
+goto findBaseDir
+
+:baseDirFound
+set MAVEN_PROJECTBASEDIR=%WDIR%
+cd "%EXEC_DIR%"
+goto endDetectBaseDir
+
+:baseDirNotFound
+set MAVEN_PROJECTBASEDIR=%EXEC_DIR%
+cd "%EXEC_DIR%"
+
+:endDetectBaseDir
+
+IF NOT EXIST "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadAdditionalConfig
+
+@setlocal EnableExtensions EnableDelayedExpansion
+for /F "usebackq delims=" %%a in ("%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config") do set JVM_CONFIG_MAVEN_PROPS=!JVM_CONFIG_MAVEN_PROPS! %%a
+@endlocal & set JVM_CONFIG_MAVEN_PROPS=%JVM_CONFIG_MAVEN_PROPS%
+
+:endReadAdditionalConfig
+
+SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe"
+set WRAPPER_JAR="%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.jar"
+set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+set WRAPPER_URL="https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.2.0/maven-wrapper-3.2.0.jar"
+
+FOR /F "usebackq tokens=1,2 delims==" %%A IN ("%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties") DO (
+    IF "%%A"=="wrapperUrl" SET WRAPPER_URL=%%B
+)
+
+@REM Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+@REM This allows using the maven wrapper in projects that prohibit checking in binary data.
+if exist %WRAPPER_JAR% (
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Found %WRAPPER_JAR%
+    )
+) else (
+    if not "%MVNW_REPOURL%" == "" (
+        SET WRAPPER_URL="%MVNW_REPOURL%/org/apache/maven/wrapper/maven-wrapper/3.2.0/maven-wrapper-3.2.0.jar"
+    )
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Couldn't find %WRAPPER_JAR%, downloading it ...
+        echo Downloading from: %WRAPPER_URL%
+    )
+
+    powershell -Command "&{"^
+		"$webclient = new-object System.Net.WebClient;"^
+		"if (-not ([string]::IsNullOrEmpty('%MVNW_USERNAME%') -and [string]::IsNullOrEmpty('%MVNW_PASSWORD%'))) {"^
+		"$webclient.Credentials = new-object System.Net.NetworkCredential('%MVNW_USERNAME%', '%MVNW_PASSWORD%');"^
+		"}"^
+		"[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $webclient.DownloadFile('%WRAPPER_URL%', '%WRAPPER_JAR%')"^
+		"}"
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Finished downloading %WRAPPER_JAR%
+    )
+)
+@REM End of extension
+
+@REM If specified, validate the SHA-256 sum of the Maven wrapper jar file
+SET WRAPPER_SHA_256_SUM=""
+FOR /F "usebackq tokens=1,2 delims==" %%A IN ("%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties") DO (
+    IF "%%A"=="wrapperSha256Sum" SET WRAPPER_SHA_256_SUM=%%B
+)
+IF NOT %WRAPPER_SHA_256_SUM%=="" (
+    powershell -Command "&{"^
+       "$hash = (Get-FileHash \"%WRAPPER_JAR%\" -Algorithm SHA256).Hash.ToLower();"^
+       "If('%WRAPPER_SHA_256_SUM%' -ne $hash){"^
+       "  Write-Output 'Error: Failed to validate Maven wrapper SHA-256, your Maven wrapper might be compromised.';"^
+       "  Write-Output 'Investigate or delete %WRAPPER_JAR% to attempt a clean download.';"^
+       "  Write-Output 'If you updated your Maven version, you need to update the specified wrapperSha256Sum property.';"^
+       "  exit 1;"^
+       "}"^
+       "}"
+    if ERRORLEVEL 1 goto error
+)
+
+@REM Provide a "standardized" way to retrieve the CLI args that will
+@REM work with both Windows and non-Windows executions.
+set MAVEN_CMD_LINE_ARGS=%*
+
+%MAVEN_JAVA_EXE% ^
+  %JVM_CONFIG_MAVEN_PROPS% ^
+  %MAVEN_OPTS% ^
+  %MAVEN_DEBUG_OPTS% ^
+  -classpath %WRAPPER_JAR% ^
+  "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" ^
+  %WRAPPER_LAUNCHER% %MAVEN_CONFIG% %*
+if ERRORLEVEL 1 goto error
+goto end
+
+:error
+set ERROR_CODE=1
+
+:end
+@endlocal & set ERROR_CODE=%ERROR_CODE%
+
+if not "%MAVEN_SKIP_RC%"=="" goto skipRcPost
+@REM check for post script, once with legacy .bat ending and once with .cmd ending
+if exist "%USERPROFILE%\mavenrc_post.bat" call "%USERPROFILE%\mavenrc_post.bat"
+if exist "%USERPROFILE%\mavenrc_post.cmd" call "%USERPROFILE%\mavenrc_post.cmd"
+:skipRcPost
+
+@REM pause the script if MAVEN_BATCH_PAUSE is set to 'on'
+if "%MAVEN_BATCH_PAUSE%"=="on" pause
+
+if "%MAVEN_TERMINATE_CMD%"=="on" exit %ERROR_CODE%
+
+cmd /C exit /B %ERROR_CODE%

pom.xml

@@ -0,0 +1,82 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>3.2.1</version>
+        <relativePath/> <!-- lookup parent from repository -->
+    </parent>
+    <groupId>de.atashfaraz</groupId>
+    <artifactId>OASParser</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <name>OASParser</name>
+    <description>OASParser</description>
+    <properties>
+        <java.version>21</java.version>
+        <jackson.version>2.16.1</jackson.version>
+    </properties>
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-devtools</artifactId>
+            <scope>runtime</scope>
+            <optional>true</optional>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-configuration-processor</artifactId>
+            <optional>true</optional>
+        </dependency>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <optional>true</optional>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-databind</artifactId>
+            <version>${jackson.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-annotations</artifactId>
+            <version>${jackson.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-core</artifactId>
+            <version>${jackson.version}</version>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+                <configuration>
+                    <excludes>
+                        <exclude>
+                            <groupId>org.projectlombok</groupId>
+                            <artifactId>lombok</artifactId>
+                        </exclude>
+                    </excludes>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>

src/main/java/de/atashfaraz/oasparser/FileManager.java

@@ -0,0 +1,47 @@
+package de.atashfaraz.oasparser;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import de.atashfaraz.oasparser.model.OasModel;
+import lombok.RequiredArgsConstructor;
+import lombok.Setter;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Component;
+
+import java.io.File;
+import java.io.IOException;
+
+@Component
+@RequiredArgsConstructor
+@Slf4j
+public class FileManager {
+
+    private final ObjectMapper objectMapper;
+
+    @Setter
+    private String outputDir;
+
+    public void writeOas(String filename, OasModel content) {
+        File file;
+        if (outputDir != null && !outputDir.isEmpty()) {
+            file = new File(outputDir, filename);
+        } else {
+            file = new File(filename);
+        }
+
+        try {
+            objectMapper.writeValue(file, content);
+        } catch (IOException e) {
+            log.error("Could not write file {}", file.getAbsolutePath(), e);
+        }
+    }
+
+    public OasModel getOas(String filename) {
+        try {
+            return objectMapper.readValue(new File(filename), OasModel.class);
+        } catch (IOException e) {
+            log.error("Could not read file {}", filename, e);
+            System.exit(1);
+            return null; // Unreachable
+        }
+    }
+}

src/main/java/de/atashfaraz/oasparser/OasParserApplication.java

@@ -0,0 +1,86 @@
+package de.atashfaraz.oasparser;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.SerializationFeature;
+import de.atashfaraz.oasparser.model.OasModel;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.boot.ApplicationArguments;
+import org.springframework.boot.ApplicationRunner;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+import java.io.File;
+
+@SpringBootApplication
+@Slf4j
+public class OasParserApplication implements ApplicationRunner {
+
+    private final ObjectMapper objectMapper;
+    private final FileManager fileManager;
+
+    public OasParserApplication(ObjectMapper objectMapper, FileManager fileManager) {
+        this.objectMapper = objectMapper;
+        this.fileManager = fileManager;
+    }
+
+    public static void main(String[] args) {
+        SpringApplication.run(OasParserApplication.class, args);
+    }
+
+    @Override
+    public void run(ApplicationArguments args) {
+        // Get input file
+        String inputFilename;
+        if (args.containsOption("input")) {
+            inputFilename = args.getOptionValues("input").getFirst();
+        } else {
+            log.warn("No input file specified. Using default oas.json");
+            inputFilename = "oas.json";
+        }
+        if (!new File(inputFilename).exists()) {
+            log.error("Input file {} does not exist", inputFilename);
+            return;
+        }
+        OasModel oasInput = fileManager.getOas(inputFilename);
+        debugPrintJson(oasInput);
+
+        if (args.containsOption("small")) {
+            objectMapper.disable(SerializationFeature.INDENT_OUTPUT);
+        }
+
+        // Get output directory
+        String outputDir;
+        if (args.containsOption("output")) {
+            outputDir = args.getOptionValues("output").getFirst();
+            if (!new File(outputDir).exists()) {
+                log.error("Output directory {} does not exist", outputDir);
+                return;
+            }
+            fileManager.setOutputDir(outputDir);
+        } else {
+            log.warn("No output directory specified. Using default target");
+        }
+
+
+        for (String pathToCopy : oasInput.getAllPaths()) {
+            log.info("Generating OAS for path {}", pathToCopy);
+            OasModel oasOutput = oasInput.cloneBase();
+            oasOutput.getPaths().put(pathToCopy, oasInput.getPaths().get(pathToCopy));
+            oasOutput.resolve(oasInput);
+            debugPrintJson(oasOutput);
+            fileManager.writeOas(pathToCopy.replaceFirst("/", "").replace("/", "_") + ".json", oasOutput);
+        }
+
+    }
+
+    private void debugPrintJson(Object json) {
+        if (log.isDebugEnabled()) {
+            try {
+                log.debug(objectMapper.writeValueAsString(json));
+            } catch (JsonProcessingException e) {
+                log.error("Could not print json", e);
+            }
+        }
+    }
+}

src/main/java/de/atashfaraz/oasparser/config/ObjectMapperConfig.java

@@ -0,0 +1,14 @@
+package de.atashfaraz.oasparser.config;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.SerializationFeature;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class ObjectMapperConfig {
+    @Bean
+    ObjectMapper objectMapper() {
+        return new ObjectMapper().enable(SerializationFeature.INDENT_OUTPUT);
+    }
+}

src/main/java/de/atashfaraz/oasparser/model/OasModel.java

@@ -0,0 +1,426 @@
+package de.atashfaraz.oasparser.model;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import lombok.AccessLevel;
+import lombok.Data;
+import lombok.Getter;
+import lombok.Setter;
+import lombok.extern.slf4j.Slf4j;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.TreeMap;
+
+import static com.fasterxml.jackson.annotation.JsonInclude.Include.NON_NULL;
+
+/* This class uses complex instead of primitive types to prevent Jackson from serializing null values. */
+@Data
+@JsonInclude(NON_NULL)
+@Slf4j
+public class OasModel {
+    @Getter(AccessLevel.PRIVATE) @Setter(AccessLevel.PRIVATE)
+    private List<String> refList;
+
+    private String openapi;
+    private Info info;
+    private List<Server> servers;
+    private Map<String, PathItem> paths;
+    private Component components;
+
+    public void resolve(final OasModel full) {
+        if (full == null) {
+            throw new NullPointerException("full must not be null");
+        }
+
+        final OasModel pasteInto = this;
+
+        if (pasteInto.getRefList() == null) {
+            pasteInto.setRefList(new ArrayList<>());
+        } else {
+            pasteInto.getRefList().clear();
+        }
+
+        if (components != null) {
+            components.resolve(pasteInto);
+        }
+        if (paths != null && !paths.isEmpty()) {
+            paths.forEach((key, pathItem) -> pathItem.resolve(pasteInto));
+        }
+
+        boolean hasResolved = resolveRefList(full, pasteInto);
+        if (hasResolved) {
+            resolve(full);
+        }
+    }
+
+    @JsonIgnore // prevent Jackson from serializing this
+    public List<String> getAllPaths() {
+        return new ArrayList<>(this.paths.keySet());
+    }
+
+    public OasModel cloneBase() {
+        OasModel clone = new OasModel();
+        clone.setOpenapi(this.getOpenapi());
+        clone.setInfo(this.getInfo());
+        clone.setServers(this.getServers());
+        clone.setPaths(new TreeMap<>());
+        clone.setComponents(new Component());
+        clone.getComponents().setSchemas(new TreeMap<>());
+        return clone;
+    }
+
+    @Data
+    @JsonInclude(NON_NULL)
+    public static class Info {
+        private String title;
+        private String description;
+        private String version;
+    }
+
+    @Data
+    @JsonInclude(NON_NULL)
+    public static class Server {
+        private String url;
+        private String description;
+    }
+
+    @Data
+    @JsonInclude(NON_NULL)
+    public static class Component {
+        private Map<String, Schema> schemas;
+
+        private void resolve(OasModel pasteInto) {
+            for (Map.Entry<String, Schema> s : schemas.entrySet()) {
+                s.getValue().resolve(pasteInto);
+            }
+        }
+
+        @Data
+        @JsonInclude(NON_NULL)
+        public static class Schema {
+            private String type;
+            private Map<String, Property> properties;
+            private List<String> required;
+            private Ref additionalProperties;
+            private List<Schema> allOf;
+            @JsonProperty("$ref") private String dollarRef;
+            private Item items;
+
+            private void resolve(OasModel pasteInto) {
+                if (additionalProperties != null) {
+                    additionalProperties.resolve(pasteInto);
+                }
+                if (allOf != null && !allOf.isEmpty()) {
+                    allOf.forEach(allOf1 -> allOf1.resolve(pasteInto));
+                }
+                if (dollarRef != null && !dollarRef.isEmpty()) {
+                    pasteInto.getRefList().add(dollarRef);
+                }
+                if (items != null) {
+                    items.resolve(pasteInto);
+                }
+                if (properties != null && !properties.isEmpty()) {
+                    properties.forEach((key, property) -> property.resolve(pasteInto));
+                }
+            }
+
+            @Data
+            @JsonInclude(NON_NULL)
+            public static class Property {
+                private String type;
+                private Item items;
+                private Integer minimum;
+                private String format;
+                @JsonProperty("enum") private List<String> enumValues;
+                private AdditionalPropterty additionalProperties;
+                @JsonProperty("$ref") private String dollarRef;
+                private Integer maxLength;
+                private Integer minLength;
+                private String pattern;
+                private List<Ref> oneOf;
+                private Boolean uniqueItems;
+
+                private void resolve(OasModel pasteInto) {
+                    if (items != null) {
+                        items.resolve(pasteInto);
+                    }
+                    if (additionalProperties != null) {
+                        additionalProperties.resolve(pasteInto);
+                    }
+                    if (dollarRef != null && !dollarRef.isEmpty()) {
+                        pasteInto.getRefList().add(dollarRef);
+                    }
+                    if (oneOf != null && !oneOf.isEmpty()) {
+                        oneOf.forEach(schema -> schema.resolve(pasteInto));
+                    }
+                }
+
+                @Data
+                @JsonInclude(NON_NULL)
+                public static class Item {
+                    private String type;
+                    @JsonProperty("$ref") private String dollarRef;
+                    private String format;
+                    @JsonProperty("enum") private List<String> enumValues;
+
+                    private void resolve(OasModel pasteInto) {
+                        if (dollarRef != null && !dollarRef.isEmpty()) {
+                            pasteInto.getRefList().add(dollarRef);
+                        }
+                    }
+                }
+
+                @Data
+                @JsonInclude(NON_NULL)
+                public static class AdditionalPropterty {
+                    @JsonProperty("$ref") private String dollarRef;
+                    private String type;
+
+                    private void resolve(OasModel pasteInto) {
+                        if (dollarRef != null && !dollarRef.isEmpty()) {
+                            pasteInto.getRefList().add(dollarRef);
+                        }
+                    }
+                }
+            }
+
+            @Data
+            @JsonInclude(NON_NULL)
+            public static class Item {
+                private List<Ref> oneOf;
+
+                private void resolve(OasModel pasteInto) {
+                    if (oneOf != null && !oneOf.isEmpty()) {
+                        oneOf.forEach(ref -> ref.resolve(pasteInto));
+                    }
+                }
+            }
+        }
+    }
+
+    @Data
+    @JsonInclude(NON_NULL)
+    public static class PathItem {
+        private Operation get;
+        private Operation post;
+        private Operation put;
+        private Operation delete;
+
+        private void resolve(OasModel pasteInto) {
+            if (get != null) {
+                get.resolve(pasteInto);
+            }
+            if (post != null) {
+                post.resolve(pasteInto);
+            }
+            if (put != null) {
+                put.resolve(pasteInto);
+            }
+            if (delete != null) {
+                delete.resolve(pasteInto);
+            }
+        }
+
+        @Data
+        @JsonInclude(NON_NULL)
+        public static class Operation {
+            private List<String> tags;
+            private String operationId;
+            private List<Parameter> parameters;
+            private Map<String, Response> responses;
+            private RequestBody requestBody;
+            private String description;
+
+            private void resolve(OasModel pasteInto) {
+                if (parameters != null) {
+                    parameters.forEach(parameter -> parameter.resolve(pasteInto));
+                }
+                if (responses != null) {
+                    responses.forEach((key, value) -> value.resolve(pasteInto));
+                }
+                if (requestBody != null) {
+                    requestBody.resolve(pasteInto);
+                }
+            }
+
+            @Data
+            @JsonInclude(NON_NULL)
+            public static class Parameter {
+                private String name;
+                private String in;
+                private String description;
+                private Boolean required;
+                private Schema schema;
+                private String example;
+
+                private void resolve(OasModel pasteInto) {
+                    if (schema != null) {
+                        schema.resolve(pasteInto);
+                    }
+                }
+
+                @Data
+                @JsonInclude(NON_NULL)
+                public static class Schema {
+                    private String type;
+                    @JsonProperty("default") private String defaultValue;
+                    private Item items;
+                    private Boolean uniqueItems;
+                    private String format;
+
+                    private void resolve(OasModel pasteInto) {
+                        if (items != null) {
+                            items.resolve(pasteInto);
+                        }
+                    }
+
+                    @Data
+                    @JsonInclude(NON_NULL)
+                    public static class Item {
+                        private String type;
+                        @JsonProperty("$ref") private String dollarRef;
+
+                        private void resolve(OasModel pasteInto) {
+                            if (dollarRef != null && !dollarRef.isEmpty()) {
+                                pasteInto.getRefList().add(dollarRef);
+                            }
+                        }
+                    }
+                }
+            }
+
+            @Data
+            @JsonInclude(NON_NULL)
+            public static class Response {
+                private String description;
+                private Map<String, Content> content;
+
+                private void resolve(OasModel pasteInto) {
+                    if (content != null) {
+                        content.forEach((key, value) -> value.resolve(pasteInto));
+                    }
+                }
+
+                @Data
+                @JsonInclude(NON_NULL)
+                public static class Content {
+                    private Schema schema;
+
+                    private void resolve(OasModel pasteInto) {
+                        if (schema != null) {
+                            schema.resolve(pasteInto);
+                        }
+                    }
+
+                    @Data
+                    @JsonInclude(NON_NULL)
+                    public static class Schema {
+                        private String type;
+                        @JsonProperty("$ref") private String dollarRef;
+                        private Ref items;
+                        private List<Ref> oneOf;
+
+                        private void resolve(OasModel pasteInto) {
+                            if (dollarRef != null && !dollarRef.isEmpty()) {
+                                pasteInto.getRefList().add(dollarRef);
+                            }
+                            if (items != null) {
+                                items.resolve(pasteInto);
+                            }
+                            if (oneOf != null && !oneOf.isEmpty()) {
+                                oneOf.forEach(ref -> ref.resolve(pasteInto));
+                            }
+                        }
+                    }
+                }
+            }
+
+            @Data
+            @JsonInclude(NON_NULL)
+            public static class RequestBody {
+                private String description;
+                private Map<String, Content> content;
+                private Boolean required;
+
+                private void resolve(OasModel pasteInto) {
+                    if (content != null) {
+                        content.forEach((key, value) -> value.resolve(pasteInto));
+                    }
+                }
+
+                @Data
+                @JsonInclude(NON_NULL)
+                public static class Content {
+                    private Schema schema;
+
+                    private void resolve(OasModel pasteInto) {
+                        if (schema != null) {
+                            schema.resolve(pasteInto);
+                        }
+                    }
+
+                    @Data
+                    @JsonInclude(NON_NULL)
+                    public static class Schema {
+                        private String type;
+                        @JsonProperty("$ref") private String dollarRef;
+                        private Ref items;
+
+                        private void resolve(OasModel pasteInto) {
+                            if (dollarRef != null && !dollarRef.isEmpty()) {
+                                pasteInto.getRefList().add(dollarRef);
+                            }
+                            if (items != null) {
+                                items.resolve(pasteInto);
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    @Data
+    @JsonInclude(NON_NULL)
+    public static class Ref {
+        @JsonProperty("$ref") private String dollarRef;
+
+        private void resolve(OasModel pasteInto) {
+            if (dollarRef != null && !dollarRef.isEmpty()) {
+                pasteInto.getRefList().add(dollarRef);
+            }
+        }
+    }
+
+    private Boolean resolveRefList(OasModel full, OasModel pasteInto) {
+        boolean resolved = false;
+        for (String ref: refList) {
+            String[] refs = ref.split("/");
+            if ("#".equals(refs[0])
+                    && "components".equals(refs[1])
+                    && "schemas".equals(refs[2])
+                    && pasteInto != null
+            ) {
+                if (pasteInto.getComponents() == null) {
+                    pasteInto.setComponents(new OasModel.Component());
+                }
+
+                if (pasteInto.getComponents().getSchemas() == null) {
+                    pasteInto.getComponents().setSchemas(new TreeMap<>());
+                }
+
+                if (!pasteInto.getComponents().getSchemas().containsKey(refs[3])) {
+                    pasteInto.getComponents().getSchemas().put(refs[3], full.getComponents().getSchemas().get(refs[3]));
+                    resolved = true;
+                }
+            } else {
+                log.error("Could not resolve ref {}", ref);
+                System.exit(1);
+            }
+        }
+        return resolved;
+    }
+}

src/main/resources/application.properties

@@ -0,0 +1 @@
+

src/test/java/de/atashfaraz/oasparser/FileManagerTest.java

@@ -0,0 +1,34 @@
+package de.atashfaraz.oasparser;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import de.atashfaraz.oasparser.model.OasModel;
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.mock.mockito.SpyBean;
+
+import java.io.File;
+import java.io.IOException;
+
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.when;
+
+@SpringBootTest
+class FileManagerTest {
+
+    @SpyBean
+    ObjectMapper objectMapper;
+
+    private final FileManager fileManager;
+
+    FileManagerTest(FileManager fileManager) {
+        this.fileManager = fileManager;
+    }
+
+    @Test
+    void nullTest() {
+        assertThrows(NullPointerException.class, () -> {
+            fileManager.getOas(null);
+        });
+    }
+}

src/test/java/de/atashfaraz/oasparser/model/OasModelTest.java

@@ -0,0 +1,26 @@
+package de.atashfaraz.oasparser.model;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+@SpringBootTest
+class OasModelTest {
+    @Test
+    void nullTest() {
+        OasModel oasModel = new OasModel();
+        assertThrows(NullPointerException.class, () -> {
+            oasModel.resolve(null);
+        });
+    }
+
+    @Test
+    void emptyTest() {
+        OasModel oasModel = new OasModel();
+        assertDoesNotThrow(() -> {
+            oasModel.resolve(new OasModel());
+        });
+    }
+}