- /**
- * The problem ID number.
- */
- private String id;
-
- /**
- * The name of the class.
- */
- private String name;
-
- /**
- * The path of the current source file.
- */
- private File sourceFile;
-
- /**
- * The path of the problem directory.
- */
- private File directory;
-
-
- /**
- * Map languages names to file extensions.
- */
- private static final Map<String,String> languageExtension = new HashMap<String,String>();
- static
- {
- languageExtension.put("Java", "java");
- languageExtension.put("C++", "cc");
- languageExtension.put("C#", "cs");
- languageExtension.put("VB", "vb");
- languageExtension.put("Python", "py");
- }
-
-
- /**
- * Construct an editor with the problem objects given us by the Arena.
- * @param component A container for the particulars of the problem.
- * @param language The currently selected language.
- * @param renderer A helper object to help format the problem statement.
- * @throws Exception If the editor could not set itself up.
- */
- public Editor(ProblemComponentModel component,
- Language language,
- Renderer renderer) throws Exception
- {
- this.id = String.valueOf(component.getProblem().getProblemID());
- this.name = component.getClassName();
-
- // Make sure the top-level vimcoder directory exists.
- File topDir = VimCoder.getStorageDirectory();
- if (!topDir.isDirectory())
- {
- if (!topDir.mkdirs()) throw new IOException(topDir.getPath());
- }
-
- // Make sure the problem directory exists.
- this.directory = new File(topDir, id);
- if (!directory.isDirectory())
- {
- if (!directory.mkdirs()) throw new IOException(directory.getPath());
- }
-
- String lang = language.getName();
- String ext = languageExtension.get(lang);
-
- // Set up the terms used for the template expansion.
- HashMap<String,String> terms = new HashMap<String,String>();
- terms.put("RETURNTYPE",component.getReturnType().getDescriptor(language).replaceAll("\\s+", ""));
- terms.put("CLASSNAME", name);
- terms.put("METHODNAME", component.getMethodName());
- terms.put("METHODPARAMS", getMethodParams(component.getParamTypes(),
- component.getParamNames(),
- language));
- terms.put("METHODPARAMNAMES", Util.join(component.getParamNames(), ", "));
- terms.put("METHODPARAMSTREAMIN", Util.join(component.getParamNames(), " >> "));
- terms.put("METHODPARAMSTREAMOUT", Util.join(component.getParamNames(), " << "));
- terms.put("METHODPARAMDECLARES", getMethodParamDeclarations(component.getParamTypes(),
- component.getParamNames(),
- language));
-
- // Write the problem statement as an HTML file in the problem directory.
- File problemFile = new File(directory, "Problem.html");
- if (!problemFile.canRead())
- {
- FileWriter writer = new FileWriter(problemFile);
- try
- {
- writer.write(renderer.toHTML(language));
- }
- finally
- {
- writer.close();
- }
- }
-
- // Expand the template for the main class and write it to the current
- // source file.
- sourceFile = new File(directory, name + "." + ext);
- if (!sourceFile.canRead())
- {
- String text = Util.expandTemplate(readTemplate(lang + "Template"),
- terms);
- FileWriter writer = new FileWriter(sourceFile);
- writer.write(text);
- writer.close();
- }
-
- // Expand the driver template and write it to a source file.
- File driverFile = new File(directory, "driver." + ext);
- if (!driverFile.canRead())
- {
- String text = Util.expandTemplate(readTemplate(lang + "Driver"),
- terms);
- FileWriter writer = new FileWriter(driverFile);
- writer.write(text);
- writer.close();
- }
-
- // Write the test cases to a text file. The driver code can read this
- // file and perform the tests based on what it reads.
- File testcaseFile = new File(directory, "testcases.txt");
- if (!testcaseFile.canRead())
- {
- StringBuilder text = new StringBuilder();
- if (component.hasTestCases())
- {
- for (TestCase testCase : component.getTestCases())
- {
- text.append(testCase.getOutput() + System.getProperty("line.separator"));
- for (String input : testCase.getInput())
- {
- text.append(input + System.getProperty("line.separator"));
- }
- }
- }
- FileWriter writer = new FileWriter(testcaseFile);
- writer.write(text.toString());
- writer.close();
- }
-
- // Finally, expand the Makefile template and write it.
- File makeFile = new File(directory, "Makefile");
- {
- String text = Util.expandTemplate(readTemplate(lang + "Makefile"),
- terms);
- FileWriter writer = new FileWriter(makeFile);
- writer.write(text);
- writer.close();
- }
- }
-
- /**
- * Save the source code provided by the server, and tell the Vim server to
- * edit the current source file.
- * @param source The source code.
- * @throws Exception If the source couldn't be written or the Vim server
- * had a problem.
- */
- public void setSource(String source) throws Exception
- {
- FileWriter writer = new FileWriter(new File(directory, name));
- writer.write(source);
- writer.close();
- sendVimCommand("--remote-tab-silent", sourceFile.getPath());
- }
-
- /**
- * Read the source code from the current source file.
- * @return The source code.
- * @throws IOException If the source file could not be read.
- */
- public String getSource() throws IOException
- {
- return Util.readFile(sourceFile) + "\n// Edited by " +
- VimCoder.version + "\n// " + VimCoder.website + "\n\n";
- }
-
-
- /**
- * Send a command to the Vim server. If the server isn't running, it will
- * be started with the name VIMCODER#### where #### is the problem ID.
- * @param command The command to send to the server.
- * @param argument A single argument for the remote command.
- * @throws Exception If the command could not be sent.
- */
- private void sendVimCommand(String command,
- String argument) throws Exception
- {
- String[] arguments = {argument};
- sendVimCommand(command, arguments);
- }
-
- /**
- * Send a command to the Vim server. If the server isn't running, it will
- * be started with the name VIMCODER#### where #### is the problem ID.
- * @param command The command to send to the server.
- * @param argument Arguments for the remote command.
- * @throws Exception If the command could not be sent.
- */
- private void sendVimCommand(String command,
- String[] arguments) throws Exception
- {
- String[] vimCommand = VimCoder.getVimCommand().split("\\s");
- String[] flags = {"--servername", "VimCoder" + id, command};
- vimCommand = Util.concat(vimCommand, flags);
- vimCommand = Util.concat(vimCommand, arguments);
- Process child = Runtime.getRuntime().exec(vimCommand, null, directory);
-
- /* FIXME: This is a hack with a magic number. The problem is the Vim
- * process doesn't fork to the background on some systems, so we can't
- * wait on the child. At the same time, calling this method before the
- * previous child could finish initializing the server may result in
- * multiple editor windows popping up. We'd also like to be able to
- * get the return code from the child if we can. The workaround here is
- * to stall the thread for a little while or until we know the child
- * does exit. If the child never exits before the timeout, we will
- * assume it is not backgrounding and that everything worked. */
- long expire = System.currentTimeMillis() + 250;
- while (System.currentTimeMillis() < expire)
- {
- Thread.yield();
- try
- {
- int exitCode = child.exitValue();
- if (exitCode != 0) throw new Exception("Vim process returned exit code " + exitCode + ".");
- break;
- }
- catch (IllegalThreadStateException exception)
- {
- // The child has not exited; intentionally ignoring exception.
- }
- }
- }
-
-
- /**
- * Read a template. We first look in the storage directory. If we can't
- * find one, we look among the resources.
- * @param tName The name of the template.
- * @return The contents of the template file, or an empty string.
- */
- private String readTemplate(String tName)
- {
- File templateFile = new File(VimCoder.getStorageDirectory(), tName);
- try
- {
- if (templateFile.canRead()) return Util.readFile(templateFile);
- return Util.readResource(tName);
- }
- catch (IOException exception)
- {
- return "";
- }
- }
-
-
- /**
- * Convert an array of data types to an array of strings according to a
- * given language.
- * @param types The data types.
- * @param language The language to use in the conversion.
- * @return The array of string representations of the data types.
- */
- private String[] getStringTypes(DataType[] types, Language language)
- {
- String[] strings = new String[types.length];
- for (int i = 0; i < types.length; ++i)
- {
- strings[i] = types[i].getDescriptor(language).replaceAll("\\s+", "");
- }
- return strings;
- }
-
- /**
- * Combine the data types and parameter names into a comma-separated list of
- * the method parameters. The result could be used inside the parentheses
- * of a method declaration.
- * @param types The data types of the parameters.
- * @param names The names of the parameters.
- * @param language The language used for representing the data types.
- * @return The list of parameters.
- */
- private String getMethodParams(DataType[] types,
- String[] names,
- Language language)
- {
- String[] typeStrings = getStringTypes(types, language);
- return Util.join(Util.combine(typeStrings, names, " "), ", ");
- }
-
- /**
- * Combine the data types and parameter names into a group of variable
- * declarations. Each declaration is separated by a new line and terminated
- * with a semicolon.
- * @param types The data types of the parameters.
- * @param names The names of the parameters.
- * @param language The language used for representing the data types.
- * @return The parameters as a block of declarations.
- */
- private String getMethodParamDeclarations(DataType[] types,
- String[] names,
- Language language)
- {
- final String end = ";" + System.getProperty("line.separator");
- String[] typeStrings = getStringTypes(types, language);
- return Util.join(Util.combine(typeStrings, names, "\t"), end) + end;
- }
+ /**
+ * The problem ID number.
+ */
+ private String id;
+
+ /**
+ * The name of the class.
+ */
+ private String name;
+
+ /**
+ * The path of the current source file.
+ */
+ private File sourceFile;
+
+ /**
+ * The path of the problem directory.
+ */
+ private File directory;
+
+
+ /**
+ * Map languages names to file extensions.
+ */
+ private static final Map<String,String> languageExtension = new HashMap<String,String>();
+ static
+ {
+ languageExtension.put("Java", "java");
+ languageExtension.put("C++", "cc");
+ languageExtension.put("C#", "cs");
+ languageExtension.put("VB", "vb");
+ languageExtension.put("Python", "py");
+ }
+
+
+ /**
+ * Construct an editor with the problem objects given us by the Arena.
+ * @param component A container for the particulars of the problem.
+ * @param language The currently selected language.
+ * @param renderer A helper object to help format the problem statement.
+ * @throws Exception If the editor could not set itself up.
+ */
+ public Editor(ProblemComponentModel component,
+ Language language,
+ Renderer renderer) throws Exception
+ {
+ this.id = String.valueOf(component.getProblem().getProblemID());
+ this.name = component.getClassName();
+
+ // Make sure the top-level vimcoder directory exists.
+ File topDir = VimCoder.getStorageDirectory();
+ if (!topDir.isDirectory())
+ {
+ if (!topDir.mkdirs()) throw new IOException(topDir.getPath());
+ }
+
+ // Make sure the problem directory exists.
+ this.directory = new File(topDir, id);
+ if (!directory.isDirectory())
+ {
+ if (!directory.mkdirs()) throw new IOException(directory.getPath());
+ }
+
+ String lang = language.getName();
+ String ext = languageExtension.get(lang);
+
+ // Set up the terms used for the template expansion.
+ HashMap<String,String> terms = new HashMap<String,String>();
+ terms.put("RETURNTYPE", component.getReturnType().getDescriptor(language).replaceAll("\\s+", ""));
+ terms.put("CLASSNAME", name);
+ terms.put("METHODNAME", component.getMethodName());
+ terms.put("METHODPARAMS", getMethodParams(component.getParamTypes(),
+ component.getParamNames(),
+ language));
+ terms.put("METHODPARAMNAMES", Util.join(component.getParamNames(), ", "));
+ terms.put("METHODPARAMSTREAMIN", Util.join(component.getParamNames(), " >> "));
+ terms.put("METHODPARAMSTREAMOUT", Util.join(component.getParamNames(), " << "));
+ terms.put("METHODPARAMDECLARES", getMethodParamDeclarations(component.getParamTypes(),
+ component.getParamNames(),
+ language));
+
+ // Write the problem statement as an HTML file in the problem directory.
+ File problemFile = new File(directory, "Problem.html");
+ if (!problemFile.canRead())
+ {
+ FileWriter writer = new FileWriter(problemFile);
+ try
+ {
+ writer.write(renderer.toHTML(language));
+ }
+ finally
+ {
+ writer.close();
+ }
+ }
+
+ // Expand the template for the main class and write it to the current
+ // source file.
+ sourceFile = new File(directory, name + "." + ext);
+ if (!sourceFile.canRead())
+ {
+ String text = Util.expandTemplate(readTemplate(lang + "Template"),
+ terms);
+ FileWriter writer = new FileWriter(sourceFile);
+ writer.write(text);
+ writer.close();
+ }
+
+ // Expand the driver template and write it to a source file.
+ File driverFile = new File(directory, "driver." + ext);
+ if (!driverFile.canRead())
+ {
+ String text = Util.expandTemplate(readTemplate(lang + "Driver"),
+ terms);
+ FileWriter writer = new FileWriter(driverFile);
+ writer.write(text);
+ writer.close();
+ }
+
+ // Write the test cases to a text file. The driver code can read this
+ // file and perform the tests based on what it reads.
+ File testcaseFile = new File(directory, "testcases.txt");
+ if (!testcaseFile.canRead())
+ {
+ StringBuilder text = new StringBuilder();
+ if (component.hasTestCases())
+ {
+ for (TestCase testCase : component.getTestCases())
+ {
+ text.append(testCase.getOutput() + System.getProperty("line.separator"));
+ for (String input : testCase.getInput())
+ {
+ text.append(input + System.getProperty("line.separator"));
+ }
+ }
+ }
+ FileWriter writer = new FileWriter(testcaseFile);
+ writer.write(text.toString());
+ writer.close();
+ }
+
+ // Finally, expand the Makefile template and write it.
+ File makeFile = new File(directory, "Makefile");
+ {
+ String text = Util.expandTemplate(readTemplate(lang + "Makefile"),
+ terms);
+ FileWriter writer = new FileWriter(makeFile);
+ writer.write(text);
+ writer.close();
+ }
+ }
+
+ /**
+ * Save the source code provided by the server, and tell the Vim server to
+ * edit the current source file.
+ * @param source The source code.
+ * @throws Exception If the source couldn't be written or the Vim server
+ * had a problem.
+ */
+ public void setSource(String source) throws Exception
+ {
+ FileWriter writer = new FileWriter(new File(directory, name));
+ writer.write(source);
+ writer.close();
+ sendVimCommand("--remote-tab-silent", sourceFile.getPath());
+ }
+
+ /**
+ * Read the source code from the current source file.
+ * @return The source code.
+ * @throws IOException If the source file could not be read.
+ */
+ public String getSource() throws IOException
+ {
+ return Util.readFile(sourceFile) + "\n// Edited by " +
+ VimCoder.version + "\n// " + VimCoder.website + "\n\n";
+ }
+
+
+ /**
+ * Send a command to the Vim server.
+ * If the server isn't running, it will be started with the name
+ * VIMCODER#### where #### is the problem ID.
+ * @param command The command to send to the server.
+ * @param argument A single argument for the remote command.
+ * @throws Exception If the command could not be sent.
+ */
+ private void sendVimCommand(String command,
+ String argument) throws Exception
+ {
+ String[] arguments = {argument};
+ sendVimCommand(command, arguments);
+ }
+
+ /**
+ * Send a command to the Vim server.
+ * If the server isn't running, it will be started with the name
+ * VIMCODER#### where #### is the problem ID.
+ * @param command The command to send to the server.
+ * @param argument Arguments for the remote command.
+ * @throws Exception If the command could not be sent.
+ */
+ private void sendVimCommand(String command,
+ String[] arguments) throws Exception
+ {
+ String[] vimCommand = VimCoder.getVimCommand().split("\\s");
+ String[] flags = {"--servername", "VimCoder" + id, command};
+ vimCommand = Util.concat(vimCommand, flags);
+ vimCommand = Util.concat(vimCommand, arguments);
+ Process child = Runtime.getRuntime().exec(vimCommand, null, directory);
+
+ /* FIXME: This is a pretty bad hack. The problem is that the Vim
+ * process doesn't fork to the background on some systems, so we
+ * can't wait on the child. At the same time, calling this method
+ * before the previous child could finish initializing the server
+ * may result in multiple editor windows popping up. We'd also
+ * like to be able to get the return code from the child if we can.
+ * The workaround here is to stall the thread for a little while or
+ * until we see that the child exits. If the child never exits
+ * before the timeout, we will assume it is not backgrounding and
+ * that everything worked. This works as long as the Vim server is
+ * able to start within the stall period. */
+ long expire = System.currentTimeMillis() + 250;
+ while (System.currentTimeMillis() < expire)
+ {
+ Thread.yield();
+ try
+ {
+ int exitCode = child.exitValue();
+ if (exitCode != 0) throw new Exception("Vim process returned exit code " + exitCode + ".");
+ break;
+ }
+ catch (IllegalThreadStateException exception)
+ {
+ // The child has not exited; intentionally ignoring exception.
+ }
+ }
+ }
+
+
+ /**
+ * Read a template.
+ * We first look in the storage directory. If we can't find one, we
+ * look among the resources.
+ * @param tName The name of the template.
+ * @return The contents of the template file, or an empty string.
+ */
+ private String readTemplate(String tName)
+ {
+ File templateFile = new File(VimCoder.getStorageDirectory(), tName);
+ try
+ {
+ if (templateFile.canRead()) return Util.readFile(templateFile);
+ return Util.readResource(tName);
+ }
+ catch (IOException exception)
+ {
+ return "";
+ }
+ }
+
+
+ /**
+ * Convert an array of data types to an array of strings according to a
+ * given language.
+ * @param types The data types.
+ * @param language The language to use in the conversion.
+ * @return The array of string representations of the data types.
+ */
+ private String[] getStringTypes(DataType[] types, Language language)
+ {
+ String[] strings = new String[types.length];
+ for (int i = 0; i < types.length; ++i)
+ {
+ strings[i] = types[i].getDescriptor(language).replaceAll("\\s+", "");
+ }
+ return strings;
+ }
+
+ /**
+ * Combine the data types and parameter names into a comma-separated list of
+ * the method parameters.
+ * The result could be used inside the parentheses of a method
+ * declaration.
+ * @param types The data types of the parameters.
+ * @param names The names of the parameters.
+ * @param language The language used for representing the data types.
+ * @return The list of parameters.
+ */
+ private String getMethodParams(DataType[] types,
+ String[] names,
+ Language language)
+ {
+ String[] typeStrings = getStringTypes(types, language);
+ return Util.join(Util.combine(typeStrings, names, " "), ", ");
+ }
+
+ /**
+ * Combine the data types and parameter names into a group of variable
+ * declarations.
+ * Each declaration is separated by a new line and terminated with a
+ * semicolon.
+ * @param types The data types of the parameters.
+ * @param names The names of the parameters.
+ * @param language The language used for representing the data types.
+ * @return The parameters as a block of declarations.
+ */
+ private String getMethodParamDeclarations(DataType[] types,
+ String[] names,
+ Language language)
+ {
+ final String end = ";" + System.getProperty("line.separator");
+ String[] typeStrings = getStringTypes(types, language);
+ return Util.join(Util.combine(typeStrings, names, "\t"), end) + end;
+ }
projects / chaz / vimcoder / commitdiff
