1 package com.jetbrains.edu.learning;
3 import com.google.gson.*;
4 import com.google.gson.reflect.TypeToken;
5 import com.intellij.openapi.editor.Document;
6 import com.intellij.openapi.editor.EditorFactory;
7 import com.intellij.openapi.fileEditor.FileDocumentManager;
8 import com.intellij.openapi.project.Project;
9 import com.intellij.openapi.util.io.FileUtil;
10 import com.intellij.openapi.vfs.LocalFileSystem;
11 import com.intellij.openapi.vfs.VirtualFile;
12 import com.intellij.util.containers.ContainerUtil;
13 import com.intellij.util.containers.hash.HashMap;
14 import com.jetbrains.edu.learning.core.EduNames;
15 import com.jetbrains.edu.learning.courseFormat.AnswerPlaceholder;
16 import com.jetbrains.edu.learning.courseFormat.Course;
17 import com.jetbrains.edu.learning.courseFormat.StudyStatus;
18 import com.jetbrains.edu.learning.courseFormat.TaskFile;
19 import org.jdom.Attribute;
20 import org.jdom.Element;
21 import org.jdom.output.XMLOutputter;
24 import java.lang.reflect.Type;
25 import java.util.Collections;
26 import java.util.List;
29 public class StudySerializationUtils {
31 public static final String PLACEHOLDERS = "placeholders";
32 public static final String LINE = "line";
33 public static final String START = "start";
34 public static final String LENGTH = "length";
35 public static final String POSSIBLE_ANSWER = "possible_answer";
36 public static final String HINT = "hint";
37 public static final String ADDITIONAL_HINTS = "additional_hints";
38 public static final String OFFSET = "offset";
39 public static final String TEXT = "text";
40 public static final String LESSONS = "lessons";
41 public static final String COURSE = "course";
42 public static final String COURSE_TITLED = "Course";
43 public static final String STATUS = "status";
44 public static final String AUTHOR = "author";
45 public static final String AUTHORS = "authors";
46 public static final String MY_INITIAL_START = "myInitialStart";
48 private StudySerializationUtils() {
51 public static class StudyUnrecognizedFormatException extends Exception {
54 public static class Xml {
55 public final static String COURSE_ELEMENT = "courseElement";
56 public final static String MAIN_ELEMENT = "StudyTaskManager";
57 public static final String MAP = "map";
58 public static final String KEY = "key";
59 public static final String VALUE = "value";
60 public static final String NAME = "name";
61 public static final String LIST = "list";
62 public static final String OPTION = "option";
63 public static final String INDEX = "index";
64 public static final String STUDY_STATUS_MAP = "myStudyStatusMap";
65 public static final String TASK_STATUS_MAP = "myTaskStatusMap";
66 public static final String LENGTH = "length";
67 public static final String ANSWER_PLACEHOLDERS = "answerPlaceholders";
68 public static final String TASK_LIST = "taskList";
69 public static final String TASK_FILES = "taskFiles";
70 public static final String INITIAL_STATE = "initialState";
71 public static final String MY_INITIAL_STATE = "MyInitialState";
72 public static final String MY_LINE = "myLine";
73 public static final String MY_START = "myStart";
74 public static final String MY_LENGTH = "myLength";
75 public static final String HINT = "hint";
76 public static final String AUTHOR_TITLED = "Author";
77 public static final String FIRST_NAME = "first_name";
78 public static final String SECOND_NAME = "second_name";
79 public static final String MY_INITIAL_LINE = "myInitialLine";
80 public static final String MY_INITIAL_LENGTH = "myInitialLength";
81 public static final String ANSWER_PLACEHOLDER = "AnswerPlaceholder";
82 public static final String TASK_WINDOWS = "taskWindows";
83 public static final String RESOURCE_PATH = "resourcePath";
84 public static final String COURSE_DIRECTORY = "courseDirectory";
85 public static final String SUBTASK_INFO = "AnswerPlaceholderSubtaskInfo";
86 public static final String SUBTASK_INFOS = "subtaskInfos";
87 public static final String ADDITIONAL_HINTS = "additionalHints";
88 public static final String POSSIBLE_ANSWER = "possibleAnswer";
89 public static final String SELECTED = "selected";
90 public static final String TASK_TEXT = "taskText";
91 public static final String PLACEHOLDER_TEXT = "placeholderText";
96 public static int getVersion(Element element) throws StudyUnrecognizedFormatException {
97 if (element.getChild(COURSE_ELEMENT) != null) {
101 final Element taskManager = element.getChild(MAIN_ELEMENT);
103 Element versionElement = getChildWithName(taskManager, "VERSION");
104 if (versionElement == null) {
108 return Integer.valueOf(versionElement.getAttributeValue(VALUE));
111 public static Element convertToSecondVersion(Element element) throws StudyUnrecognizedFormatException {
112 final Element oldCourseElement = element.getChild(COURSE_ELEMENT);
113 Element state = new Element(MAIN_ELEMENT);
115 Element course = addChildWithName(state, COURSE, oldCourseElement.clone());
116 course.setName(COURSE_TITLED);
118 Element author = getChildWithName(course, AUTHOR);
119 String authorString = author.getAttributeValue(VALUE);
120 course.removeContent(author);
122 String[] names = authorString.split(" ", 2);
123 Element authorElement = new Element(AUTHOR_TITLED);
124 addChildWithName(authorElement, FIRST_NAME, names[0]);
125 addChildWithName(authorElement, SECOND_NAME, names.length == 1 ? "" : names[1]);
127 addChildList(course, AUTHORS, Collections.singletonList(authorElement));
129 Element courseDirectoryElement = getChildWithName(course, RESOURCE_PATH);
130 renameElement(courseDirectoryElement, COURSE_DIRECTORY);
132 for (Element lesson : getChildList(course, LESSONS)) {
133 incrementIndex(lesson);
134 for (Element task : getChildList(lesson, TASK_LIST)) {
135 incrementIndex(task);
136 Map<String, Element> taskFiles = getChildMap(task, TASK_FILES);
137 for (Element taskFile : taskFiles.values()) {
138 renameElement(getChildWithName(taskFile, TASK_WINDOWS), ANSWER_PLACEHOLDERS);
139 for (Element placeholder : getChildList(taskFile, ANSWER_PLACEHOLDERS)) {
140 placeholder.setName(ANSWER_PLACEHOLDER);
142 Element initialState = new Element(MY_INITIAL_STATE);
143 addChildWithName(placeholder, INITIAL_STATE, initialState);
144 addChildWithName(initialState, MY_LINE, getChildWithName(placeholder, MY_INITIAL_LINE).getAttributeValue(VALUE));
145 addChildWithName(initialState, MY_START, getChildWithName(placeholder, MY_INITIAL_START).getAttributeValue(VALUE));
146 addChildWithName(initialState, MY_LENGTH, getChildWithName(placeholder, MY_INITIAL_LENGTH).getAttributeValue(VALUE));
151 element.removeContent();
152 element.addContent(state);
156 public static Map<String, String> fillStatusMap(Element taskManagerElement, String mapName, XMLOutputter outputter)
157 throws StudyUnrecognizedFormatException {
158 Map<Element, String> sourceMap = getChildMap(taskManagerElement, mapName);
159 Map<String, String> destMap = new HashMap<>();
160 for (Map.Entry<Element, String> entry : sourceMap.entrySet()) {
161 String status = entry.getValue();
162 if (status.equals(StudyStatus.Unchecked.toString())) {
165 destMap.put(outputter.outputString(entry.getKey()), status);
170 public static Element convertToThirdVersion(Element state, Project project) throws StudyUnrecognizedFormatException {
171 Element taskManagerElement = state.getChild(MAIN_ELEMENT);
172 XMLOutputter outputter = new XMLOutputter();
174 Map<String, String> placeholderTextToStatus = fillStatusMap(taskManagerElement, STUDY_STATUS_MAP, outputter);
175 Map<String, String> taskFileToStatusMap = fillStatusMap(taskManagerElement, TASK_STATUS_MAP, outputter);
177 Element courseElement = getChildWithName(taskManagerElement, COURSE).getChild(COURSE_TITLED);
178 for (Element lesson : getChildList(courseElement, LESSONS)) {
179 int lessonIndex = getAsInt(lesson, INDEX);
180 for (Element task : getChildList(lesson, TASK_LIST)) {
181 String taskStatus = null;
182 int taskIndex = getAsInt(task, INDEX);
183 Map<String, Element> taskFiles = getChildMap(task, TASK_FILES);
184 for (Map.Entry<String, Element> entry : taskFiles.entrySet()) {
185 Element taskFileElement = entry.getValue();
186 String taskFileText = outputter.outputString(taskFileElement);
187 String taskFileStatus = taskFileToStatusMap.get(taskFileText);
188 if (taskFileStatus != null && (taskStatus == null || taskFileStatus.equals(StudyStatus.Failed.toString()))) {
189 taskStatus = taskFileStatus;
191 Document document = StudyUtils.getDocument(project.getBasePath(), lessonIndex, taskIndex, entry.getKey());
192 if (document == null) {
195 for (Element placeholder : getChildList(taskFileElement, ANSWER_PLACEHOLDERS)) {
196 taskStatus = addStatus(outputter, placeholderTextToStatus, taskStatus, placeholder);
197 addOffset(document, placeholder);
198 addInitialState(document, placeholder);
201 if (taskStatus != null) {
202 addChildWithName(task, STATUS, taskStatus);
209 public static Element convertToForthVersion(Element state) throws StudyUnrecognizedFormatException {
210 Element taskManagerElement = state.getChild(MAIN_ELEMENT);
211 Element courseElement = getChildWithName(taskManagerElement, COURSE).getChild(COURSE_TITLED);
212 for (Element lesson : getChildList(courseElement, LESSONS)) {
213 for (Element task : getChildList(lesson, TASK_LIST)) {
214 Map<String, Element> taskFiles = getChildMap(task, TASK_FILES);
215 for (Map.Entry<String, Element> entry : taskFiles.entrySet()) {
216 Element taskFileElement = entry.getValue();
217 for (Element placeholder : getChildList(taskFileElement, ANSWER_PLACEHOLDERS)) {
218 Element valueElement = new Element(SUBTASK_INFO);
219 addChildMap(placeholder, SUBTASK_INFOS, Collections.singletonMap(String.valueOf(0), valueElement));
220 for (String childName : ContainerUtil
221 .list(HINT, ADDITIONAL_HINTS, POSSIBLE_ANSWER, SELECTED, STATUS, TASK_TEXT)) {
222 Element child = getChildWithName(placeholder, childName);
223 valueElement.addContent(child.clone());
225 renameElement(getChildWithName(valueElement, TASK_TEXT), PLACEHOLDER_TEXT);
234 public static String addStatus(XMLOutputter outputter,
235 Map<String, String> placeholderTextToStatus,
237 Element placeholder) {
238 String placeholderText = outputter.outputString(placeholder);
239 String status = placeholderTextToStatus.get(placeholderText);
240 if (status != null) {
241 addChildWithName(placeholder, STATUS, status);
242 if (taskStatus == null || status.equals(StudyStatus.Failed.toString())) {
249 public static void addInitialState(Document document, Element placeholder) throws StudyUnrecognizedFormatException {
250 Element initialState = getChildWithName(placeholder, INITIAL_STATE).getChild(MY_INITIAL_STATE);
251 int initialLine = getAsInt(initialState, MY_LINE);
252 int initialStart = getAsInt(initialState, MY_START);
253 int initialOffset = document.getLineStartOffset(initialLine) + initialStart;
254 addChildWithName(initialState, OFFSET, initialOffset);
255 renameElement(getChildWithName(initialState, MY_LENGTH), LENGTH);
258 public static void addOffset(Document document, Element placeholder) throws StudyUnrecognizedFormatException {
259 int line = getAsInt(placeholder, LINE);
260 int start = getAsInt(placeholder, START);
261 int offset = document.getLineStartOffset(line) + start;
262 addChildWithName(placeholder, OFFSET, offset);
265 public static int getAsInt(Element element, String name) throws StudyUnrecognizedFormatException {
266 return Integer.valueOf(getChildWithName(element, name).getAttributeValue(VALUE));
269 public static void incrementIndex(Element element) throws StudyUnrecognizedFormatException {
270 Element index = getChildWithName(element, INDEX);
271 int indexValue = Integer.parseInt(index.getAttributeValue(VALUE));
272 changeValue(index, indexValue + 1);
275 public static void renameElement(Element element, String newName) {
276 element.setAttribute(NAME, newName);
279 public static void changeValue(Element element, Object newValue) {
280 element.setAttribute(VALUE, newValue.toString());
283 public static Element addChildWithName(Element parent, String name, Element value) {
284 Element child = new Element(OPTION);
285 child.setAttribute(NAME, name);
286 child.addContent(value);
287 parent.addContent(child);
291 public static Element addChildWithName(Element parent, String name, Object value) {
292 Element child = new Element(OPTION);
293 child.setAttribute(NAME, name);
294 child.setAttribute(VALUE, value.toString());
295 parent.addContent(child);
299 public static Element addChildList(Element parent, String name, List<Element> elements) {
300 Element listElement = new Element(LIST);
301 for (Element element : elements) {
302 listElement.addContent(element);
304 return addChildWithName(parent, name, listElement);
307 public static Element addChildMap(Element parent, String name, Map<String, Element> value) {
308 Element mapElement = new Element(MAP);
309 for (Map.Entry<String, Element> entry : value.entrySet()) {
310 Element entryElement = new Element("entry");
311 mapElement.addContent(entryElement);
312 String key = entry.getKey();
313 entryElement.setAttribute("key", key);
314 Element valueElement = new Element("value");
315 valueElement.addContent(entry.getValue());
316 entryElement.addContent(valueElement);
318 return addChildWithName(parent, name, mapElement);
321 public static List<Element> getChildList(Element parent, String name) throws StudyUnrecognizedFormatException {
322 return getChildList(parent, name, false);
325 public static List<Element> getChildList(Element parent, String name, boolean optional) throws StudyUnrecognizedFormatException {
326 Element listParent = getChildWithName(parent, name, optional);
327 if (listParent != null) {
328 Element list = listParent.getChild(LIST);
330 return list.getChildren();
333 return Collections.emptyList();
336 public static Element getChildWithName(Element parent, String name) throws StudyUnrecognizedFormatException {
337 return getChildWithName(parent, name, false);
340 public static Element getChildWithName(Element parent, String name, boolean optional) throws StudyUnrecognizedFormatException {
341 for (Element child : parent.getChildren()) {
342 Attribute attribute = child.getAttribute(NAME);
343 if (attribute == null) {
346 if (name.equals(attribute.getValue())) {
353 throw new StudyUnrecognizedFormatException();
356 public static <K, V> Map<K, V> getChildMap(Element element, String name) throws StudyUnrecognizedFormatException {
357 return getChildMap(element, name, false);
360 public static <K, V> Map<K, V> getChildMap(Element element, String name, boolean optional) throws StudyUnrecognizedFormatException {
361 Element mapParent = getChildWithName(element, name, optional);
362 if (mapParent != null) {
363 Element map = mapParent.getChild(MAP);
365 HashMap result = new HashMap();
366 for (Element entry : map.getChildren()) {
367 Object key = entry.getAttribute(KEY) == null ? entry.getChild(KEY).getChildren().get(0) : entry.getAttributeValue(KEY);
368 Object value = entry.getAttribute(VALUE) == null ? entry.getChild(VALUE).getChildren().get(0) : entry.getAttributeValue(VALUE);
369 result.put(key, value);
374 return Collections.emptyMap();
378 public static class Json {
380 public static final String TASK_LIST = "task_list";
381 public static final String TASK_FILES = "task_files";
386 public static class CourseTypeAdapter implements JsonDeserializer<Course> {
388 private final File myCourseFile;
390 public CourseTypeAdapter(File courseFile) {
391 myCourseFile = courseFile;
395 public Course deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
396 JsonObject courseObject = json.getAsJsonObject();
397 JsonArray lessons = courseObject.getAsJsonArray(LESSONS);
398 for (int lessonIndex = 1; lessonIndex <= lessons.size(); lessonIndex++) {
399 JsonObject lessonObject = lessons.get(lessonIndex - 1).getAsJsonObject();
400 JsonArray tasks = lessonObject.getAsJsonArray(TASK_LIST);
401 for (int taskIndex = 1; taskIndex <= tasks.size(); taskIndex++) {
402 JsonObject taskObject = tasks.get(taskIndex - 1).getAsJsonObject();
403 for (Map.Entry<String, JsonElement> taskFile : taskObject.getAsJsonObject(TASK_FILES).entrySet()) {
404 String name = taskFile.getKey();
405 String filePath = FileUtil.join(myCourseFile.getParent(), EduNames.LESSON + lessonIndex, EduNames.TASK + taskIndex, name);
406 VirtualFile resourceFile = LocalFileSystem.getInstance().refreshAndFindFileByIoFile(new File(filePath));
407 if (resourceFile == null) {
410 Document document = FileDocumentManager.getInstance().getDocument(resourceFile);
411 if (document == null) {
414 JsonObject taskFileObject = taskFile.getValue().getAsJsonObject();
415 JsonArray placeholders = taskFileObject.getAsJsonArray(PLACEHOLDERS);
416 for (JsonElement placeholder : placeholders) {
417 JsonObject placeholderObject = placeholder.getAsJsonObject();
418 if (placeholderObject.getAsJsonPrimitive(OFFSET) != null) {
421 int line = placeholderObject.getAsJsonPrimitive(LINE).getAsInt();
422 int start = placeholderObject.getAsJsonPrimitive(START).getAsInt();
423 int offset = document.getLineStartOffset(line) + start;
424 placeholderObject.addProperty(OFFSET, offset);
429 return new GsonBuilder().create().fromJson(json, Course.class);
433 public static class StepicTaskFileAdapter implements JsonDeserializer<TaskFile> {
436 public TaskFile deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
437 final Gson gson = new GsonBuilder().setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_UNDERSCORES).create();
438 JsonObject taskFileObject = json.getAsJsonObject();
439 JsonArray placeholders = taskFileObject.getAsJsonArray(PLACEHOLDERS);
440 for (JsonElement placeholder : placeholders) {
441 JsonObject placeholderObject = placeholder.getAsJsonObject();
442 int line = placeholderObject.getAsJsonPrimitive(LINE).getAsInt();
443 int start = placeholderObject.getAsJsonPrimitive(START).getAsInt();
445 placeholderObject.addProperty(OFFSET, start);
448 Document document = EditorFactory.getInstance().createDocument(taskFileObject.getAsJsonPrimitive(TEXT).getAsString());
449 placeholderObject.addProperty(OFFSET, document.getLineStartOffset(line) + start);
451 final String hintString = placeholderObject.getAsJsonPrimitive(HINT).getAsString();
452 final JsonArray hintsArray = new JsonArray();
455 final Type listType = new TypeToken<List<String>>() {}.getType();
456 final List<String> hints = gson.fromJson(hintString, listType);
457 if (hints != null && !hints.isEmpty()) {
458 for (int i = 0; i < hints.size(); i++) {
460 placeholderObject.addProperty(HINT, hints.get(0));
463 hintsArray.add(hints.get(i));
465 placeholderObject.add(ADDITIONAL_HINTS, hintsArray);
468 placeholderObject.addProperty(HINT, "");
471 catch (JsonParseException e) {
472 hintsArray.add(hintString);
476 return gson.fromJson(json, TaskFile.class);
480 public static class StepicAnswerPlaceholderAdapter implements JsonSerializer<AnswerPlaceholder> {
482 public JsonElement serialize(AnswerPlaceholder src, Type typeOfSrc, JsonSerializationContext context) {
483 final List<String> hints = src.getHints();
485 final int length = src.getLength();
486 final int start = src.getOffset();
487 final String possibleAnswer = src.getPossibleAnswer();
490 final Gson gson = new GsonBuilder().setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_UNDERSCORES).create();
491 final JsonObject answerPlaceholder = new JsonObject();
492 answerPlaceholder.addProperty(LINE, line);
493 answerPlaceholder.addProperty(START, start);
494 answerPlaceholder.addProperty(LENGTH, length);
495 answerPlaceholder.addProperty(POSSIBLE_ANSWER, possibleAnswer);
497 final String jsonHints = gson.toJson(hints);
498 answerPlaceholder.addProperty(HINT, jsonHints);
500 return answerPlaceholder;