private void sendSourceMap(
String moduleName, HttpServletRequest request, HttpServletResponse response)
throws IOException {
long startTime = System.currentTimeMillis();
ModuleState moduleState = modules.get(moduleName);
File sourceMap = moduleState.findSourceMap();
// Stream the file, substituting the sourceroot variable with the filename.
// (This is more efficient than parsing the file as JSON.)
// We need to do this at runtime because we don't know what the hostname will be
// until we get a request. (For example, some people run the Code Server behind
// a reverse proxy to support https.)
String sourceRoot =
String.format(
"http://%s:%d/sourcemaps/%s/",
request.getServerName(), request.getServerPort(), moduleName);
PageUtil.sendTemplateFile(
"application/json",
sourceMap,
"\"" + SOURCEROOT_TEMPLATE_VARIABLE + "\"",
"\"" + sourceRoot + "\"",
response);
long elapsedTime = System.currentTimeMillis() - startTime;
logger.log(
TreeLogger.WARN,
"sent source map for module '" + moduleName + "' in " + elapsedTime + " ms");
}
/**
* Sends an HTTP response containing Java source rendered as HTML. The lines of source that have
* corresponding JavaScript will be highlighted (as determined by reading the source map).
*/
private void sendSourceFileAsHtml(
String moduleName, String sourcePath, BufferedReader lines, HttpServletResponse response)
throws IOException {
ReverseSourceMap sourceMap = ReverseSourceMap.load(logger, modules.get(moduleName));
File sourceFile = new File(sourcePath);
response.setStatus(HttpServletResponse.SC_OK);
response.setContentType("text/html");
HtmlWriter out = new HtmlWriter(response.getWriter());
out.startTag("html").nl();
out.startTag("head").nl();
out.startTag("title").text(sourceFile.getName() + " (GWT Code Server)").endTag("title").nl();
out.startTag("style").nl();
out.text(".unused { color: grey; }").nl();
out.text(".used { color: black; }").nl();
out.text(".title { margin-top: 0; }").nl();
out.endTag("style").nl();
out.endTag("head").nl();
out.startTag("body").nl();
out.startTag("a", "href=", ".").text(sourceFile.getParent()).endTag("a").nl();
out.startTag("h1", "class=", "title").text(sourceFile.getName()).endTag("h1").nl();
out.startTag("pre", "class=", "unused").nl();
try {
int lineNumber = 1;
for (String line = lines.readLine(); line != null; line = lines.readLine()) {
if (sourceMap.appearsInJavaScript(sourcePath, lineNumber)) {
out.startTag("span", "class=", "used").text(line).endTag("span").nl();
} else {
out.text(line).nl();
}
lineNumber++;
}
} finally {
lines.close();
}
out.endTag("pre").nl();
out.endTag("body").nl();
out.endTag("html").nl();
}
/**
* Sends an HTTP response containing a Java source. It will be sent as plain text by default, or
* as HTML if the query string is equal to "html".
*/
private void sendSourceFile(
String moduleName, String sourcePath, String query, HttpServletResponse response)
throws IOException {
ModuleState moduleState = modules.get(moduleName);
InputStream pageBytes = moduleState.openSourceFile(sourcePath);
if (pageBytes == null) {
response.sendError(HttpServletResponse.SC_NOT_FOUND);
logger.log(TreeLogger.WARN, "unknown source file: " + sourcePath);
return;
}
if (query != null && query.equals("html")) {
BufferedReader reader = new BufferedReader(new InputStreamReader(pageBytes));
sendSourceFileAsHtml(moduleName, sourcePath, reader, response);
} else {
PageUtil.sendStream("text/plain", pageBytes, response);
}
}
private SourceMap loadSourceMap(String moduleName) {
ModuleState moduleState = modules.get(moduleName);
return SourceMap.load(moduleState.findSourceMap());
}