github/cordova-android
4
0
Fork 1
mirror of https://github.com/apache/cordova-android.git synced 2026-04-23 00:00:09 +08:00
Code Issues Packages Projects Releases Wiki Activity

Adding truncate to FileWriter

Browse Source
This commit is contained in:
macdonst
2010-10-28 22:17:20 -04:00
parent b7024ad1f5
commit 2e5d6f5b74
2 changed files with 154 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files
framework/assets/js/file.js
+118 -12
View File
@@ -46,13 +46,16 @@ File._createEvent = function(type, target) {
function FileError() {
// File error codes
// Found in DOMException
this.NOT_FOUND_ERR = 8;
this.SECURITY_ERR = 18;
this.ABORT_ERR = 20;
this.NOT_FOUND_ERR = 1;
this.SECURITY_ERR = 2;
this.ABORT_ERR = 3;
// Added by this specification
this.NOT_READABLE_ERR = 24;
this.ENCODING_ERR = 26;
this.NOT_READABLE_ERR = 4;
this.ENCODING_ERR = 5;
this.NO_MODIFICATION_ALLOWED_ERR = 6;
this.INVALID_STATE_ERR = 7;
this.SYNTAX_ERR = 8;
this.code = null;
};
@@ -99,6 +102,10 @@ FileMgr.prototype.writeAsText = function(fileName, data, append, successCallback
PhoneGap.exec(successCallback, errorCallback, "File", "writeAsText", [fileName, data, append]);
};
FileMgr.prototype.truncate = function(fileName, size, successCallback, errorCallback) {
PhoneGap.exec(successCallback, errorCallback, "File", "truncate", [fileName, size]);
};
FileMgr.prototype.readAsText = function(fileName, encoding, successCallback, errorCallback) {
PhoneGap.exec(successCallback, errorCallback, "File", "readAsText", [fileName, encoding]);
};
@@ -337,6 +344,16 @@ FileReader.prototype.readAsBinaryString = function(file) {
this.fileName = file;
};
/**
* Read file and return data as a binary data.
*
* @param file The name of the file
*/
FileReader.prototype.readAsArrayBuffer = function(file) {
// TODO - Can't return binary data to browser.
this.fileName = file;
};
//-----------------------------------------------------------------------------
// File Writer
//-----------------------------------------------------------------------------
@@ -388,7 +405,12 @@ FileWriter.prototype.abort = function() {
};
FileWriter.prototype.writeAsText = function(file, text, bAppend) {
if (bAppend != true) {
// Throw an exception if we are already writing a file
if (this.readyState == FileWriter.WRITING) {
throw FileError.INVALID_STATE_ERR;
}
if (bAppend != true) {
bAppend = false; // for null values
}
@@ -399,6 +421,12 @@ FileWriter.prototype.writeAsText = function(file, text, bAppend) {
var me = this;
// If onwritestart callback
if (typeof me.onwritestart == "function") {
var evt = File._createEvent("writestart", me);
me.onwritestart(evt);
}
// Write file
navigator.fileMgr.writeAsText(file, text, bAppend,
@@ -413,15 +441,15 @@ FileWriter.prototype.writeAsText = function(file, text, bAppend) {
// Save result
me.result = r;
// DONE state
me.readyState = FileWriter.DONE;
// If onwrite callback
if (typeof me.onwrite == "function") {
var evt = File._createEvent("write", me);
me.onwrite(evt);
}
// DONE state
me.readyState = FileWriter.DONE;
// If onwriteend callback
if (typeof me.onwriteend == "function") {
var evt = File._createEvent("writeend", me);
@@ -440,15 +468,15 @@ FileWriter.prototype.writeAsText = function(file, text, bAppend) {
// Save error
me.error = e;
// DONE state
me.readyState = FileWriter.DONE;
// If onerror callback
if (typeof me.onerror == "function") {
var evt = File._createEvent("error", me);
me.onerror(evt);
}
// DONE state
me.readyState = FileWriter.DONE;
// If onwriteend callback
if (typeof me.onwriteend == "function") {
var evt = File._createEvent("writeend", me);
@@ -459,3 +487,81 @@ FileWriter.prototype.writeAsText = function(file, text, bAppend) {
};
FileWriter.prototype.truncate = function(file, size) {
// Throw an exception if we are already writing a file
if (this.readyState == FileWriter.WRITING) {
throw FileError.INVALID_STATE_ERR;
}
this.fileName = file;
// WRITING state
this.readyState = FileWriter.WRITING;
var me = this;
// If onwritestart callback
if (typeof me.onwritestart == "function") {
var evt = File._createEvent("writestart", me);
me.onwritestart(evt);
}
// Write file
navigator.fileMgr.truncate(file, size,
// Success callback
function(r) {
// If DONE (cancelled), then don't do anything
if (me.readyState == FileWriter.DONE) {
return;
}
// Save result
me.result = r;
// If onwrite callback
if (typeof me.onwrite == "function") {
var evt = File._createEvent("write", me);
me.onwrite(evt);
}
// DONE state
me.readyState = FileWriter.DONE;
// If onwriteend callback
if (typeof me.onwriteend == "function") {
var evt = File._createEvent("writeend", me);
me.onwriteend(evt);
}
},
// Error callback
function(e) {
// If DONE (cancelled), then don't do anything
if (me.readyState == FileWriter.DONE) {
return;
}
// Save error
me.error = e;
// If onerror callback
if (typeof me.onerror == "function") {
var evt = File._createEvent("error", me);
me.onerror(evt);
}
// DONE state
me.readyState = FileWriter.DONE;
// If onwriteend callback
if (typeof me.onwriteend == "function") {
var evt = File._createEvent("writeend", me);
me.onwriteend(evt);
}
}
);
};