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Support for link() and unlink().

This commit is contained in:
Alan Kligman 2012-11-14 11:19:04 -05:00
parent bd2d0fe880
commit de463a36c1
3 changed files with 144 additions and 15 deletions
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22
examples/idbfs-test.html
View File

@ -57,6 +57,28 @@ require(["src/fs"], function(IDBFS) {
return console.error(error);
}
console.info("stat /tmp/0", result);
fs.link("/tmp/0", "/tmp/1", function(error) {
if(error) {
return console.error(error);
}
fs.stat("/tmp/1", function(error, result) {
if(error) {
return console.error(error);
}
console.info("stat /tmp/1", result);
fs.unlink("/tmp/0", function(error) {
if(error) {
return console.error(error);
}
fs.stat("/tmp/1", function(error, result) {
if(error) {
return console.error(error);
}
console.info("stat /tmp/1", result);
});
});
});
});
});
});
});

8
src/error.js
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@ -59,7 +59,10 @@ define(function(require) {
ENotMounted.prototype.name = "ENotMounted";
ENotMounted.prototype.constructor = ENotMounted;
function EFileExists(){ Error.apply(this, arguments); }
EFileExists.prototype = new Error();
EFileExists.prototype.name = "EFileExists";
EFileExists.prototype.constructor = EFileExists;
return {
EPathExists: EPathExists,
@ -70,7 +73,8 @@ define(function(require) {
ENotDirectory: ENotDirectory,
EBadFileDescriptor: EBadFileDescriptor,
ENotImplemented: ENotImplemented,
ENotMounted: ENotMounted
ENotMounted: ENotMounted,
EFileExists: EFileExists
};
});

129
src/fs.js
View File

@ -166,6 +166,7 @@ define(function(require) {
if(_(flags).contains(OF_CREATE)) {
entry = new FileEntry(fullpath);
file = new File();
++ file.links;
var createFileRequest = files.put(file, entry.file);
createFileRequest.onsuccess = function(e) {
var createEntryRequest = metadata.put(entry, entry.name);
@ -207,7 +208,7 @@ define(function(require) {
var fs = this;
fullpath = Path.normalize(fullpath);
var transaction = optTransaction || fs.Transaction([METADATA_STORE_NAME], IDB_RW);
var transaction = optTransaction || new fs.Transaction([METADATA_STORE_NAME], IDB_RW);
var metadata = transaction.objectStore(METADATA_STORE_NAME);
@ -235,7 +236,7 @@ define(function(require) {
var fs = this;
fullpath = Path.normalize(fullpath);
var transaction = optTransaction || fs.Transaction([METADATA_STORE_NAME], IDB_RW);
var transaction = optTransaction || new fs.Transaction([METADATA_STORE_NAME], IDB_RW);
var metadata = transaction.objectStore(METADATA_STORE_NAME);
var parentIndex = metadata.index(PARENT_INDEX);
@ -274,7 +275,7 @@ define(function(require) {
var fs = this;
fullpath = Path.normalize(fullpath);
var transaction = optTransaction || fs.Transaction([METADATA_STORE_NAME, FILE_STORE_NAME], IDB_RO);
var transaction = optTransaction || new fs.Transaction([METADATA_STORE_NAME, FILE_STORE_NAME], IDB_RO);
var metadata = transaction.objectStore(METADATA_STORE_NAME);
var files = transaction.objectStore(FILE_STORE_NAME);
@ -306,16 +307,118 @@ define(function(require) {
runCallback(callback, e);
};
};
FileSystem.prototype.link = function link(oldpath, newpath, callback) {
FileSystem.prototype.link = function link(oldpath, newpath, callback, optTransaction) {
var fs = this;
oldpath = Path.normalize(oldpath);
newpath = Path.normalize(newpath);
var transaction = optTransaction || new fs.Transaction([METADATA_STORE_NAME, FILE_STORE_NAME], IDB_RW);
var metadata = transaction.objectStore(METADATA_STORE_NAME);
var files = transaction.objectStore(FILE_STORE_NAME);
var getOldEntryRequest = metadata.get(oldpath);
getOldEntryRequest.onsuccess = function(e) {
var oldentry = e.target.result;
if(!oldentry) {
runCallback(callback, new error.ENoEntry());
} else {
var getNewEntryRequest = metadata.get(newpath);
getNewEntryRequest.onsuccess = function(e) {
var newentry = e.target.result;
if(newentry) {
runCallback(callback, new error.EPathExists());
} else {
newentry = new FileEntry(newpath, oldentry.file);
var putNewEntryRequest = metadata.put(newentry, newentry.name);
putNewEntryRequest.onsuccess = function(e) {
var getFileRequest = files.get(newentry.file);
getFileRequest.onsuccess = function(e) {
var file = e.target.result;
++ file.links;
var putFileRequest = files.put(file, newentry.file);
putFileRequest.onsuccess = function(e) {
runCallback(callback);
};
putFileRequest.onerror = function(e) {
runCallback(callback, e);
};
};
getFileRequest.onerror = function(e) {
runCallback(callback, e);
};
};
putNewEntryRequest.onerror = function(e) {
runCallback(callback, e);
};
}
};
getNewEntryRequest.onerror = function(e) {
runCallback(callback, e);
};
}
};
getOldEntryRequest.onerror = function(e) {
runCallback(callback, e);
}
};
FileSystem.prototype.unlink = function unlink(fullpath, callback, optTransaction) {
var fs = this;
fullpath = Path.normalize(fullpath);
var transaction = optTransaction || new fs.Transaction([METADATA_STORE_NAME, FILE_STORE_NAME], IDB_RW);
var metadata = transaction.objectStore(METADATA_STORE_NAME);
var files = transaction.objectStore(FILE_STORE_NAME);
var getEntryRequest = metadata.get(fullpath);
getEntryRequest.onsuccess = function(e) {
var entry = e.target.result;
if(!entry) {
runCallback(callback, new error.ENoEntry());
} else if(DIRECTORY_ENTRY_MIME_TYPE === entry.type) {
runCallback(callback, new error.EIsDirectory());
} else {
var deleteEntryRequest = metadata.delete(entry.name);
deleteEntryRequest.onsuccess = function(e) {
var getFileRequest = files.get(entry.file);
getFileRequest.onsuccess = function(e) {
var file = e.target.result;
-- file.links;
if(0 === files.links) {
var deleteFileRequest = files.delete(entry.file);
deleteFileRequest.onsuccess = complete;
deleteFileRequest.onerror = function(e) {
runCallback(callback, e);
};
} else {
var putFileRequest = files.put(file, entry.file);
putFileRequest.onsuccess = complete;
putFileRequest.onerror = function(e) {
runCallback(callback, e);
};
}
function complete() {
runCallback(callback);
}
};
getFileRequest.onerror = function(e) {
runCallback(callback, e);
};
};
deleteEntryRequest.onerror = function(e) {
runCallback(callback, e);
};
}
};
getEntryRequest.onerror = function(e) {
runCallback(callback, e);
};
};
FileSystem.prototype.setxattr = function setxattr(fullpath, name, value, callback, optTransaction) {
};
FileSystem.prototype.unlink = function unlink(fullpath, callback) {
};
FileSystem.prototype.setxattr = function setxattr(fullpath, name, value, callback) {
};
FileSystem.prototype.getxattr = function getxattr(fullpath, name, callback) {
FileSystem.prototype.getxattr = function getxattr(fullpath, name, callback, optTransaction) {
};
@ -349,10 +452,10 @@ define(function(require) {
this._fs.stat(Path.normalize(this._cwd + "/" + path), callback);
};
FileSystemContext.prototype.link = function link(oldpath, newpath, callback) {
this._fs.link(Path.normalize(this._cwd + "/" + oldpath), Path.normalize(this._cwd + "/" + newpath), callback);
};
FileSystemContext.prototype.unlink = function unlink(path, callback) {
this._fs.unlink(Path.normalize(this._cwd + "/" + path), callback);
};
FileSystemContext.prototype.setxattr = function setxattr(path, name, value, callback) {