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Use copyTo during checkout of files to working tree 

This way we can stream a large file through memory, rather than
loading the entire thing into a single contiguous byte array.

Change-Id: I3ada2856af2bf518f072edec242667a486fb0df1
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
This commit is contained in:
Shawn O. Pearce 2010-06-30 18:56:20 -07:00
parent a0fd06e5c2
commit d04b7972d8
1 changed files with 6 additions and 7 deletions
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13
org.eclipse.jgit/src/org/eclipse/jgit/lib/GitIndex.java
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@ -874,16 +874,15 @@ public void checkout(File wd) throws IOException {
*/ */
public void checkoutEntry(File wd, Entry e) throws IOException { public void checkoutEntry(File wd, Entry e) throws IOException {
ObjectLoader ol = db.open(e.sha1, Constants.OBJ_BLOB); ObjectLoader ol = db.open(e.sha1, Constants.OBJ_BLOB);
byte[] bytes = ol.getBytes();
File file = new File(wd, e.getName()); File file = new File(wd, e.getName());
file.delete(); file.delete();
file.getParentFile().mkdirs(); file.getParentFile().mkdirs();
FileChannel channel = new FileOutputStream(file).getChannel(); FileOutputStream dst = new FileOutputStream(file);
ByteBuffer buffer = ByteBuffer.wrap(bytes); try {
int j = channel.write(buffer); ol.copyTo(dst);
if (j != bytes.length) } finally {
throw new IOException(MessageFormat.format(JGitText.get().couldNotWriteFile, file)); dst.close();
channel.close(); }
if (config_filemode() && File_hasExecute()) { if (config_filemode() && File_hasExecute()) {
if (FileMode.EXECUTABLE_FILE.equals(e.mode)) { if (FileMode.EXECUTABLE_FILE.equals(e.mode)) {
if (!File_canExecute(file)) if (!File_canExecute(file))