LightPIT: src/main/kotlin/de/uapcore/lightpit/RequestMapping.kt@9c7aff3cbb14 (annotated)

src/main/kotlin/de/uapcore/lightpit/RequestMapping.kt@9c7aff3cbb14 (annotated)

src/main/kotlin/de/uapcore/lightpit/RequestMapping.kt

Thu, 13 May 2021 11:28:50 +0200

author: Mike Becker <universe@uap-core.de>
date: Thu, 13 May 2021 11:28:50 +0200
changeset 195: 9c7aff3cbb14
parent 184: e8eecee6aadf
child 198: 94f174d591ab
permissions: -rw-r--r--

#109 - add RSS feed

 /*
  * Copyright 2021 Mike Becker. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  * 1. Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *
  * 2. Redistributions in binary form must reproduce the above copyright
  * notice, this list of conditions and the following disclaimer in the
  * documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 package de.uapcore.lightpit
 import de.uapcore.lightpit.dao.DataAccessObject
 import de.uapcore.lightpit.viewmodel.NavMenu
 import de.uapcore.lightpit.viewmodel.View
 import javax.servlet.http.HttpServletRequest
 import javax.servlet.http.HttpServletResponse
 import javax.servlet.http.HttpSession
 import kotlin.math.min
 typealias MappingMethod = (HttpRequest, DataAccessObject) -> Unit
 typealias PathParameters = Map<String, String>
 class HttpRequest(
     val request: HttpServletRequest,
     val response: HttpServletResponse,
     val pathParams: PathParameters = emptyMap()
 ) {
     val session: HttpSession = request.session
     val remoteUser: String? = request.remoteUser
     /**
      * The name of the content page.
      *
      * @see Constants#REQ_ATTR_CONTENT_PAGE
      */
     var contentPage = ""
         set(value) {
             field = value
             request.setAttribute(Constants.REQ_ATTR_CONTENT_PAGE, jspPath(value))
         }
     /**
      * A list of additional style sheets.
      *
      * @see Constants#REQ_ATTR_STYLESHEET
      */
     var styleSheets = emptyList<String>()
         set(value) {
             field = value
             request.setAttribute(Constants.REQ_ATTR_STYLESHEET,
                 value.map { it.withExt(".css") }
             )
         }
     /**
      * The name of the navigation menu JSP.
      *
      * @see Constants#REQ_ATTR_NAVIGATION
      */
     var navigationMenu: NavMenu? = null
         set(value) {
             field = value
             request.setAttribute(Constants.REQ_ATTR_NAVIGATION, navigationMenu)
         }
     var redirectLocation = ""
         set(value) {
             field = value
             request.setAttribute(Constants.REQ_ATTR_REDIRECT_LOCATION, baseHref + value)
         }
     /**
      * The view object.
      *
      * @see Constants#REQ_ATTR_VIEWMODEL
      */
     var view: View? = null
         set(value) {
             field = value
             request.setAttribute(Constants.REQ_ATTR_VIEWMODEL, value)
         }
     /**
      * The base path of this application.
      */
     val baseHref get() = "${request.scheme}://${request.serverName}:${request.serverPort}${request.contextPath}/"
     private fun String.withExt(ext: String) = if (endsWith(ext)) this else plus(ext)
     private fun jspPath(name: String) = Constants.JSP_PATH_PREFIX.plus(name).withExt(".jsp")
     fun param(name: String): String? = request.getParameter(name)
     fun paramArray(name: String): Array<String> = request.getParameterValues(name) ?: emptyArray()
     fun forward(jsp: String) {
         request.getRequestDispatcher(jspPath(jsp)).forward(request, response)
     }
     fun render(page: String? = null) {
         page?.let { contentPage = it }
         forward("site")
     }
     fun renderCommit(location: String? = null) {
         location?.let { redirectLocation = it }
         contentPage = Constants.JSP_COMMIT_SUCCESSFUL
         render()
     }
 }
 /**
  * A path pattern optionally containing placeholders.
  *
  * The special directories . and .. are disallowed in the pattern.
  * Placeholders start with a % sign.
  *
  * @param pattern the pattern
  */
 class PathPattern(pattern: String) {
     private val nodePatterns: List<String>
     private val collection: Boolean
     private fun parse(pattern: String): List<String> {
         val nodes = pattern.split("/").filter { it.isNotBlank() }.toList()
         require(nodes.none { it == "." || it == ".." }) { "Path must not contain '.' or '..' nodes." }
         return nodes
     }
     /**
      * Matches a path against this pattern.
      * The path must be canonical in the sense that no . or .. parts occur.
      *
      * @param path the path to match
      * @return true if the path matches the pattern, false otherwise
      */
     fun matches(path: String): Boolean {
         if (collection xor path.endsWith("/")) return false
         val nodes = parse(path)
         if (nodePatterns.size != nodes.size) return false
         for (i in nodePatterns.indices) {
             val pattern = nodePatterns[i]
             val node = nodes[i]
             if (pattern.startsWith("%")) continue
             if (pattern != node) return false
         }
         return true
     }
     /**
      * Returns the path parameters found in the specified path using this pattern.
      * The return value of this method is undefined, if the patter does not match.
      *
      * @param path the path
      * @return the path parameters, if any, or an empty map
      * @see .matches
      */
     fun obtainPathParameters(path: String): PathParameters {
         val params = mutableMapOf<String, String>()
         val nodes = parse(path)
         for (i in 0 until min(nodes.size, nodePatterns.size)) {
             val pattern = nodePatterns[i]
             val node = nodes[i]
             if (pattern.startsWith("%")) {
                 params[pattern.substring(1)] = node
             }
         }
         return params
     }
     override fun hashCode(): Int {
         val str = StringBuilder()
         for (node in nodePatterns) {
             if (node.startsWith("%")) {
                 str.append("/%")
             } else {
                 str.append('/')
                 str.append(node)
             }
         }
         if (collection) str.append('/')
         return str.toString().hashCode()
     }
     override fun equals(other: Any?): Boolean {
         if (other is PathPattern) {
             if (collection xor other.collection || nodePatterns.size != other.nodePatterns.size) return false
             for (i in nodePatterns.indices) {
                 val left = nodePatterns[i]
                 val right = other.nodePatterns[i]
                 if (left.startsWith("%") && right.startsWith("%")) continue
                 if (left != right) return false
             }
             return true
         } else {
             return false
         }
     }
     init {
         nodePatterns = parse(pattern)
         collection = pattern.endsWith("/")
     }
 }

Mercurial > hg > LightPIT / annotate

src/main/kotlin/de/uapcore/lightpit/RequestMapping.kt@9c7aff3cbb14 (annotated)

src/main/kotlin/de/uapcore/lightpit/RequestMapping.kt