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Fixes #106. Also fixed bug in write_data where offset wasn't used copy data from source buffer.

This commit is contained in:
Alan Kligman 2014-02-19 12:27:57 -05:00
parent 18958fc585
commit ebe52fe5c3
1 changed files with 43 additions and 2 deletions
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45
src/fs.js
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@ -582,6 +582,46 @@ define(function(require) {
}
}
function replace_data(context, ofd, buffer, offset, length, callback) {
var fileNode;
function return_nbytes(error) {
if(error) {
callback(error);
} else {
callback(null, length);
}
}
function update_file_node(error) {
if(error) {
callback(error);
} else {
context.put(fileNode.id, fileNode, return_nbytes);
}
}
function write_file_data(error, result) {
if(error) {
callback(error);
} else {
fileNode = result;
var newData = new Uint8Array(length);
var bufferWindow = buffer.subarray(offset, offset + length);
newData.set(bufferWindow);
ofd.position = length;
fileNode.size = length;
fileNode.mtime = Date.now();
fileNode.version += 1;
context.put(fileNode.data, newData, update_file_node);
}
}
context.get(ofd.id, write_file_data);
}
function write_data(context, ofd, buffer, offset, length, position, callback) {
var fileNode;
var fileData;
@ -613,7 +653,8 @@ define(function(require) {
if(fileData) {
newData.set(fileData);
}
newData.set(buffer, _position);
var bufferWindow = buffer.subarray(offset, offset + length);
newData.set(bufferWindow, _position);
if(undefined === position) {
ofd.position += length;
}
@ -1702,7 +1743,7 @@ define(function(require) {
var ofd = new OpenFileDescription(fileNode.id, flags, 0);
var fd = fs.allocDescriptor(ofd);
write_data(context, ofd, data, 0, data.length, 0, function(err2, nbytes) {
replace_data(context, ofd, data, 0, data.length, function(err2, nbytes) {
if(err2) {
return callback(err2);
}