Set up servlets!

#!/bin/bash

case "$1" in
*/)
    directory=$1
    ;;
*)
    directory="${1}/"
    ;;
esac
name=$2
classpath=$3

project_root="$directory$name"
config_folder="$project_root/WEB-INF/"
source_folder="$project_root/src/"
class_folder="${config_folder}classes/"

echo $directory
echo $name
echo $project_root
echo $config_folder
echo $source_folder
echo $class_folder

mkdir -p $project_root
mkdir -p $config_folder
mkdir -p $class_folder


# Creates a basic web.xml file that describes a hello-world servlet
echo "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"                                 > "$config_folder/web.xml"
echo "<web-app version=\"2.4\" xmlns=\"http://java.sun.com/xml/ns/j2ee\" "       >> "$config_folder/web.xml"
echo "   xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" "               >> "$config_folder/web.xml"
echo "   xsi:schemaLocation=\"http://java.sun.com/xml/ns/j2ee "                  >> "$config_folder/web.xml"
echo "               http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd\">" >> "$config_folder/web.xml"
echo ""                                                                          >> "$config_folder/web.xml"
echo "  <servlet>"                                                               >> "$config_folder/web.xml"
echo "    <servlet-name>Hello-World</servlet-name>"                              >> "$config_folder/web.xml"
echo "    <servlet-class>HelloWorld</servlet-class>"                             >> "$config_folder/web.xml"
echo "  </servlet>"                                                              >> "$config_folder/web.xml"
echo ""                                                                          >> "$config_folder/web.xml"
echo "  <servlet-mapping>"                                                       >> "$config_folder/web.xml"
echo "    <servlet-name>Hello-World</servlet-name>"                              >> "$config_folder/web.xml"
echo "    <url-pattern>/hello</url-pattern>"                                     >> "$config_folder/web.xml"
echo "  </servlet-mapping>"                                                      >> "$config_folder/web.xml"
echo "</web-app>"                                                                >> "$config_folder/web.xml"

# Creates the directory the Java® source file lives in.
mkdir -p $source_folder

# Creates the source-file
echo ""                                                                                                     > "${source_folder}HelloWorld.java"
echo ""                                                                                                    >> "${source_folder}HelloWorld.java"
echo "import java.io.IOException;"                                                                         >> "${source_folder}HelloWorld.java"
echo "import java.io.PrintWriter;"                                                                         >> "${source_folder}HelloWorld.java"
echo "import javax.servlet.http.HttpServlet;"                                                              >> "${source_folder}HelloWorld.java"
echo "import javax.servlet.http.HttpServletRequest;"                                                       >> "${source_folder}HelloWorld.java"
echo "import javax.servlet.http.HttpServletResponse;"                                                      >> "${source_folder}HelloWorld.java"
echo "  /**"                                                                                               >> "${source_folder}HelloWorld.java"
echo "   * A simple hello-world servlet, responding to HTTP GET"                                           >> "${source_folder}HelloWorld.java"
echo "   */"                                                                                               >> "${source_folder}HelloWorld.java"
echo "public class HelloWorld extends HttpServlet {"                                                       >> "${source_folder}HelloWorld.java"
echo "  @Override"                                                                                         >> "${source_folder}HelloWorld.java"
echo "  public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException{"   >> "${source_folder}HelloWorld.java"
echo "    PrintWriter out = response.getWriter();"                                                         >> "${source_folder}HelloWorld.java"
echo "    out.println(\"<!DOCTYPE html>\");"                                                               >> "${source_folder}HelloWorld.java"
echo "    out.println(\"<html lang=\\\"en\\\">\");"                                                        >> "${source_folder}HelloWorld.java"
echo "    out.println(\"    <head>\");"                                                                    >> "${source_folder}HelloWorld.java"
echo "    out.println(\"        <meta charset=\\\"utf-8\\\">\");"                                          >> "${source_folder}HelloWorld.java"
echo "    out.println(\"                <title>Hello World</title>\");"                                    >> "${source_folder}HelloWorld.java"
echo "    out.println(\"        </head>\");"                                                               >> "${source_folder}HelloWorld.java"
echo "    out.println(\"        <body>\");"                                                                >> "${source_folder}HelloWorld.java"
echo "    out.println(\"                <h1>Hello World</h1>\");"                                          >> "${source_folder}HelloWorld.java"
echo "    out.println(\"        </body>\");"                                                               >> "${source_folder}HelloWorld.java"
echo "    out.println(\"</html>\");"                                                                       >> "${source_folder}HelloWorld.java"
echo "  }"                                                                                                 >> "${source_folder}HelloWorld.java"
echo "}"                                                                                                   >> "${source_folder}HelloWorld.java"

# Moves us to the project root. This is not really necessary, but gives us a convenient place to put error logs.
# No, I don't log errors. Why do you ask? :p
pushd $project_root
# Compiles the files. This will give an error if the classpath is wrong.
javac src/HelloWorld.java -classpath ${classpath} -d ${class_folder}

# Goes back to where we came from.
popd

# TODO:
# Log errors.
# Make an ant-build script