/**
* Silently dump a file to the given destionation. All {@link IOException}s gets caught and
* logged, but not re-thrown.
*
* @param out dump destination
* @param file file to dump.
* @param compressed if {@code true} the denoted file is assumed to be gzipped.
* @return {@code true} on success (everything read and written).
* @throws NullPointerException if a parameter is {@code null}.
*/
public static boolean dump(Writer out, File file, boolean compressed) {
if (!file.exists()) {
return false;
}
FileInputStream fis = null;
GZIPInputStream gis = null;
Reader in = null;
try {
if (compressed) {
fis = new FileInputStream(file);
gis = new GZIPInputStream(fis);
in = new InputStreamReader(gis);
} else {
in = new FileReader(file);
}
dump(out, in);
return true;
} catch (IOException e) {
OpenGrokLogger.getLogger()
.log(Level.WARNING, "An error occured while piping file " + file + ": ", e);
} finally {
IOUtils.close(in);
IOUtils.close(gis);
IOUtils.close(fis);
}
return false;
}
/**
* Do a best effort to clean up all resources allocated when populating a Lucene document. On
* normal execution, these resources should be closed automatically by the index writer once it's
* done with them, but we may not get that far if something fails.
*
* @param doc the document whose resources to clean up
*/
private void cleanupResources(Document doc) {
for (IndexableField f : doc) {
// If the field takes input from a reader, close the reader.
IOUtils.close(f.readerValue());
// If the field takes input from a token stream, close the
// token stream.
if (f instanceof Field) {
IOUtils.close(((Field) f).tokenStreamValue());
}
}
}
/** @param directory Directory where we list tags */
@Override
protected void buildTagList(File directory) {
this.tagList = new TreeSet<TagEntry>();
ArrayList<String> argv = new ArrayList<String>();
ensureCommand(CMD_PROPERTY_KEY, CMD_FALLBACK);
argv.add(cmd);
argv.add("tags");
ProcessBuilder pb = new ProcessBuilder(argv);
pb.directory(directory);
Process process = null;
BufferedReader in = null;
try {
process = pb.start();
in = new BufferedReader(new InputStreamReader(process.getInputStream()));
String line;
while ((line = in.readLine()) != null) {
String parts[] = line.split(" *");
if (parts.length < 2) {
throw new HistoryException("Tag line contains more than 2 columns: " + line);
}
// Grrr, how to parse tags with spaces inside?
// This solution will loose multiple spaces;-/
String tag = parts[0];
for (int i = 1; i < parts.length - 1; ++i) {
tag += " " + parts[i];
}
TagEntry tagEntry = new BazaarTagEntry(Integer.parseInt(parts[parts.length - 1]), tag);
// Bazaar lists multiple tags on more lines. We need to merge those into single TagEntry
TagEntry higher = this.tagList.ceiling(tagEntry);
if (higher != null && higher.equals(tagEntry)) {
// Found in the tree, merge tags
this.tagList.remove(higher);
tagEntry.setTags(higher.getTags() + ", " + tag);
}
this.tagList.add(tagEntry);
}
} catch (IOException e) {
OpenGrokLogger.getLogger().log(Level.WARNING, "Failed to read tag list: {0}", e.getMessage());
this.tagList = null;
} catch (HistoryException e) {
OpenGrokLogger.getLogger()
.log(Level.WARNING, "Failed to parse tag list: {0}", e.getMessage());
this.tagList = null;
}
IOUtils.close(in);
if (process != null) {
try {
process.exitValue();
} catch (IllegalThreadStateException e) {
// the process is still running??? just kill it..
process.destroy();
}
}
}
@Override
public Annotation annotate(File file, String revision) throws IOException {
SAXParserFactory factory = SAXParserFactory.newInstance();
SAXParser saxParser = null;
try {
saxParser = factory.newSAXParser();
} catch (Exception ex) {
IOException err = new IOException("Failed to create SAX parser", ex);
throw err;
}
ArrayList<String> argv = new ArrayList<String>();
ensureCommand(CMD_PROPERTY_KEY, CMD_FALLBACK);
argv.add(cmd);
argv.add("annotate");
argv.add("--trust-server-cert");
argv.add("--non-interactive");
argv.add("--xml");
if (revision != null) {
argv.add("-r");
argv.add(revision);
}
argv.add(escapeFileName(file.getName()));
ProcessBuilder pb = new ProcessBuilder(argv);
pb.directory(file.getParentFile());
Process process = null;
BufferedInputStream in = null;
Annotation ret = null;
try {
process = pb.start();
in = new BufferedInputStream(process.getInputStream());
AnnotateHandler handler = new AnnotateHandler(file.getName());
try {
saxParser.parse(in, handler);
ret = handler.annotation;
} catch (Exception e) {
OpenGrokLogger.getLogger()
.log(Level.SEVERE, "An error occurred while parsing the xml output", e);
}
} finally {
IOUtils.close(in);
if (process != null) {
try {
process.exitValue();
} catch (IllegalThreadStateException e) {
// the process is still running??? just kill it..
process.destroy();
}
}
}
return ret;
}
public void close() throws IOException {
IOUtils.close(ctagsIn);
if (ctags != null) {
ctags.destroy();
}
}
/**
* Get all data required to create a diff view wrt. to this request in one go.
*
* @return an instance with just enough information to render a sufficient view. If not all
* required parameters were given either they are supplemented with reasonable defaults if
* possible, otherwise the related field(s) are {@code null}. {@link DiffData#errorMsg} {@code
* != null} indicates, that an error occured and one should not try to render a view.
*/
public DiffData getDiffData() {
DiffData data = new DiffData();
data.path = getPath().substring(0, path.lastIndexOf('/'));
data.filename = Util.htmlize(getResourceFile().getName());
String srcRoot = getSourceRootPath();
String context = req.getContextPath();
String[] filepath = new String[2];
data.rev = new String[2];
data.file = new String[2][];
data.param = new String[2];
/*
* Basically the request URI looks like this:
* http://$site/$webapp/diff/$resourceFile?r1=$fileA@$revA&r2=$fileB@$revB
* The code below extracts file path and revision from the URI.
*/
for (int i = 1; i <= 2; i++) {
String[] tmp = null;
String p = req.getParameter("r" + i);
if (p != null) {
tmp = p.split("@");
}
if (tmp != null && tmp.length == 2) {
filepath[i - 1] = tmp[0];
data.rev[i - 1] = tmp[1];
}
}
if (data.rev[0] == null
|| data.rev[1] == null
|| data.rev[0].length() == 0
|| data.rev[1].length() == 0
|| data.rev[0].equals(data.rev[1])) {
data.errorMsg =
"Please pick two revisions to compare the changed "
+ "from the <a href=\""
+ context
+ Prefix.HIST_L
+ getUriEncodedPath()
+ "\">history</a>";
return data;
}
data.genre = AnalyzerGuru.getGenre(getResourceFile().getName());
if (data.genre == null || txtGenres.contains(data.genre)) {
InputStream[] in = new InputStream[2];
try {
// Get input stream for both older and newer file.
for (int i = 0; i < 2; i++) {
File f = new File(srcRoot + filepath[i]);
in[i] = HistoryGuru.getInstance().getRevision(f.getParent(), f.getName(), data.rev[i]);
if (in[i] == null) {
data.errorMsg =
"Unable to get revision "
+ Util.htmlize(data.rev[i])
+ " for file: "
+ Util.htmlize(getPath());
return data;
}
}
/*
* If the genre of the older revision cannot be determined,
* (this can happen if the file was empty), try with newer
* version.
*/
for (int i = 0; i < 2 && data.genre == null; i++) {
try {
data.genre = AnalyzerGuru.getGenre(in[i]);
} catch (IOException e) {
data.errorMsg = "Unable to determine the file type: " + Util.htmlize(e.getMessage());
}
}
if (data.genre != Genre.PLAIN && data.genre != Genre.HTML) {
return data;
}
ArrayList<String> lines = new ArrayList<>();
Project p = getProject();
for (int i = 0; i < 2; i++) {
try (BufferedReader br =
new BufferedReader(ExpandTabsReader.wrap(new InputStreamReader(in[i]), p))) {
String line;
while ((line = br.readLine()) != null) {
lines.add(line);
}
data.file[i] = lines.toArray(new String[lines.size()]);
lines.clear();
}
in[i] = null;
}
} catch (Exception e) {
data.errorMsg = "Error reading revisions: " + Util.htmlize(e.getMessage());
} finally {
for (int i = 0; i < 2; i++) {
IOUtils.close(in[i]);
}
}
if (data.errorMsg != null) {
return data;
}
try {
data.revision = Diff.diff(data.file[0], data.file[1]);
} catch (DifferentiationFailedException e) {
data.errorMsg = "Unable to get diffs: " + Util.htmlize(e.getMessage());
}
for (int i = 0; i < 2; i++) {
try {
URI u = new URI(null, null, null, filepath[i] + "@" + data.rev[i], null);
data.param[i] = u.getRawQuery();
} catch (URISyntaxException e) {
LOGGER.log(Level.WARNING, "Failed to create URI: ", e);
}
}
data.full = fullDiff();
data.type = getDiffType();
}
return data;
}
