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Move progress handling details out of PGNFile.getGameInfo()

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This commit is contained in:
Peter Osterlund 2019-09-23 20:17:56 +02:00
parent 061eaf1869
commit 152f9600b5
3 changed files with 54 additions and 44 deletions
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2
DroidFishApp/src/androidTest/java/org/petero/droidfish/gamelogic/PGNFileTest.java
View File

@ -138,7 +138,7 @@ public class PGNFileTest extends TestCase {
assertEquals(137, gi.get(1).endPos);
assertEquals("2. w - b 1-0", gi.get(1).info);
res = pgnFile.getGameInfo(null, null, 1);
res = pgnFile.getGameInfo(1);
assertEquals(GameInfoResult.OK, res.first);
assertEquals(1, res.second.size());
}

2
DroidFishApp/src/main/java/org/petero/droidfish/DroidFish.java
View File

@ -798,7 +798,7 @@ public class DroidFish extends Activity
}
PGNFile pgnFile = new PGNFile(fn);
long fileLen = FileUtil.getFileLength(fn);
Pair<GameInfoResult,ArrayList<GameInfo>> gi = pgnFile.getGameInfo(this, null, 2);
Pair<GameInfoResult,ArrayList<GameInfo>> gi = pgnFile.getGameInfo(2);
if ((fileLen > 1024 * 1024) || (gi.first == GameInfoResult.OK && gi.second.size() > 1)) {
filename = fn;
} else {

94
DroidFishApp/src/main/java/org/petero/droidfish/activities/PGNFile.java
View File

@ -42,7 +42,7 @@ public class PGNFile {
this.fileName = new File(fileName);
}
public final String getName() {
public String getName() {
return fileName.getAbsolutePath();
}
@ -51,14 +51,14 @@ public class PGNFile {
public long startPos;
public long endPos;
final GameInfo setNull(long currPos) {
GameInfo setNull(long currPos) {
info = null;
startPos = currPos;
endPos = currPos;
return this;
}
final boolean isNull() { return info == null; }
boolean isNull() { return info == null; }
public String toString() {
if (info == null)
@ -160,29 +160,49 @@ public class PGNFile {
}
}
/** Return info about all PGN games in a file. */
public final Pair<GameInfoResult,ArrayList<GameInfo>> getGameInfo(Activity activity,
final ProgressDialog progress) {
return getGameInfo(activity, progress, -1);
private static class ProgressHandler {
final ProgressDialog progress;
final Activity activity;
int percent = -1;
long fileLen = -1;
ProgressHandler(File file, Activity activity, ProgressDialog progress) {
this.activity = activity;
this.progress = progress;
try (RandomAccessFile raf = new RandomAccessFile(file, "r")) {
fileLen = raf.length();
} catch (IOException ignore) {
}
}
void reportProgress(long nRead) {
int newPercent = fileLen > 0 ? (int)(nRead * 100 / fileLen) : 0;
if (newPercent > percent) {
percent = newPercent;
activity.runOnUiThread(() -> progress.setProgress(newPercent));
}
}
}
/** Return info about all PGN games in a file. */
public final Pair<GameInfoResult,ArrayList<GameInfo>> getGameInfo(Activity activity,
final ProgressDialog progress,
int maxGames) {
ArrayList<GameInfo> gamesInFile = new ArrayList<>();
gamesInFile.clear();
long fileLen = 0;
BufferedInput f = null;
try {
int percent = -1;
{
RandomAccessFile raf = new RandomAccessFile(fileName, "r");
fileLen = raf.length();
raf.close();
}
f = new BufferedInput(new FileInputStream(fileName));
public Pair<GameInfoResult,ArrayList<GameInfo>> getGameInfo(Activity activity,
ProgressDialog progress) {
if (activity == null || progress == null)
return getGameInfo(null, -1);
ProgressHandler handler = new ProgressHandler(fileName, activity, progress);
return getGameInfo(handler, -1);
}
/** Return info about up to "maxGames" PGN games in a file. */
public Pair<GameInfoResult,ArrayList<GameInfo>> getGameInfo(int maxGames) {
return getGameInfo(null, maxGames);
}
/** Return info about PGN games in a file. */
private Pair<GameInfoResult,ArrayList<GameInfo>> getGameInfo(ProgressHandler progress,
int maxGames) {
ArrayList<GameInfo> gamesInFile = new ArrayList<>();
try (BufferedInput f = new BufferedInput(new FileInputStream(fileName))) {
GameInfo gi = null;
HeaderInfo hi = null;
boolean inHeader = false;
@ -339,13 +359,8 @@ public class PGNFile {
gi = null;
break;
}
final int newPercent = fileLen == 0 ? 0 : (int)(filePos * 100 / fileLen);
if (newPercent > percent) {
percent = newPercent;
if (progress != null) {
activity.runOnUiThread(() -> progress.setProgress(newPercent));
}
}
if (progress != null)
progress.reportProgress(filePos);
if (Thread.currentThread().isInterrupted())
return new Pair<>(GameInfoResult.CANCEL, null);
}
@ -363,14 +378,9 @@ public class PGNFile {
}
} catch (IOException ignore) {
} catch (OutOfMemoryError e) {
gamesInFile.clear();
gamesInFile = null;
return new Pair<>(GameInfoResult.OUT_OF_MEMORY, null);
} finally {
if (f != null)
f.close();
}
if ((gamesInFile.size() == 0) && (fileLen > 0))
if (gamesInFile.isEmpty())
return new Pair<>(GameInfoResult.NOT_PGN, null);
return new Pair<>(GameInfoResult.OK, gamesInFile);
@ -382,7 +392,7 @@ public class PGNFile {
}
/** Read one game defined by gi. Return null on failure. */
final String readOneGame(GameInfo gi) {
String readOneGame(GameInfo gi) {
try (RandomAccessFile f = new RandomAccessFile(fileName, "r")) {
byte[] pgnData = new byte[(int) (gi.endPos - gi.startPos)];
f.seek(gi.startPos);
@ -394,7 +404,7 @@ public class PGNFile {
}
/** Append PGN to the end of this PGN file. */
public final void appendPGN(String pgn) {
public void appendPGN(String pgn) {
mkDirs();
try (FileWriter fw = new FileWriter(fileName, true)) {
fw.write(pgn);
@ -404,7 +414,7 @@ public class PGNFile {
}
}
final boolean deleteGame(GameInfo gi, ArrayList<GameInfo> gamesInFile) {
boolean deleteGame(GameInfo gi, ArrayList<GameInfo> gamesInFile) {
try {
File tmpFile = new File(fileName + ".tmp_delete");
try (RandomAccessFile fileReader = new RandomAccessFile(fileName, "r");
@ -419,8 +429,8 @@ public class PGNFile {
// Update gamesInFile
if (gamesInFile != null) {
gamesInFile.remove(gi);
final int nGames = gamesInFile.size();
final long delta = gi.endPos - gi.startPos;
int nGames = gamesInFile.size();
long delta = gi.endPos - gi.startPos;
for (int i = 0; i < nGames; i++) {
GameInfo tmpGi = gamesInFile.get(i);
if (tmpGi.startPos > gi.startPos) {
@ -436,7 +446,7 @@ public class PGNFile {
return false;
}
final void replacePGN(String pgnToSave, GameInfo gi) {
void replacePGN(String pgnToSave, GameInfo gi) {
try {
File tmpFile = new File(fileName + ".tmp_delete");
try (RandomAccessFile fileReader = new RandomAccessFile(fileName, "r");
@ -467,7 +477,7 @@ public class PGNFile {
}
}
final boolean delete() {
boolean delete() {
return fileName.delete();
}
}