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Added merge_module function. Added text module (currently having encoding only). Updated the FileSystem File object with readText, writeText methods (removed the FileReader, FileWriter classes).

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atanasovg
2014-04-29 11:52:45 +03:00
parent bf9b564bf5
commit 162dbe56c9
14 changed files with 189 additions and 134 deletions
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130
FileSystem/file_system.ts
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@ -162,31 +162,15 @@ export class File extends FileSystemEntity {
}
/**
* Checks whether a File with the specified path already exists.
*/
* Checks whether a File with the specified path already exists.
*/
public static exists(path: string): boolean {
return getFileAccess().fileExists(path);
}
/**
* Creates a FileReader object over this file and locks the file until the reader is released.
*/
public openRead(): FileReader {
this.checkAccess();
return new FileReader(this);
}
/**
* Creates a FileWriter object over this file and locks the file until the writer is released.
*/
public openWrite(): FileWriter {
this.checkAccess();
return new FileWriter(this);
}
/**
* Gets the extension of the entity.
*/
* Gets the extension of the entity.
*/
get extension(): string {
return this[extensionProperty];
}
@ -198,11 +182,63 @@ export class File extends FileSystemEntity {
return this[fileLockedProperty];
}
/**
* Reads the content of the file as a string using the specified encoding (defaults to UTF-8).
*/
public readText(onSuccess: (content: string) => any, onError?: (error: any) => any, encoding?: string) {
if (!onSuccess) {
return;
}
this.checkAccess();
this[fileLockedProperty] = true;
var that = this;
var localSuccess = function (content: string) {
that[fileLockedProperty] = false;
onSuccess(content);
}
var localError = function (error) {
that[fileLockedProperty] = false;
if (onError) {
onError(error);
}
}
// TODO: Asyncronous
getFileAccess().readText(this.path, localSuccess, localError, encoding);
}
/**
* Writes the provided string to the file, using the specified encoding. Any previous content will be overwritten.
*/
public writeText(content: string, onSuccess?: () => any, onError?: (error: any) => any, encoding?: string) {
this.checkAccess();
this[fileLockedProperty] = true;
var that = this;
var localSuccess = function () {
that[fileLockedProperty] = false;
if (onSuccess) {
onSuccess();
}
};
var localError = function (error) {
that[fileLockedProperty] = false;
if (onError) {
onError(error);
}
};
// TODO: Asyncronous
getFileAccess().writeText(this.path, content, localSuccess, localError, encoding);
}
private checkAccess() {
if (this.isLocked) {
throw {
message: "Cannot access a locked file."
};
throw new Error("Cannot access a locked file.");
}
}
}
@ -371,52 +407,4 @@ export module knownFolders {
return _temp;
}
}
/**
* Base class for FileReader and FileWriter APIs.
*/
export class FileAccess {
private _file;
constructor(file: File) {
this._file = file;
this._file[fileLockedProperty] = true;
}
/**
* Unlocks the file and allows other operations over it.
*/
public release() {
this._file[fileLockedProperty] = false;
this._file = undefined;
}
/**
* Gets the underlying File instance.
*/
get file(): File {
return this._file;
}
}
/**
* Enables reading the content of a File entity.
*/
export class FileReader extends FileAccess {
/**
* Reads the content of the underlying File as a UTF8 encoded string.
*/
public readText(onSuccess: (content: string) => any, onError?: (error: any) => any) {
getFileAccess().readText(this.file.path, onSuccess, onError);
}
}
/**
* Enables saving data to a File entity.
*/
export class FileWriter extends FileAccess {
public writeText(content: string, onSuccess?: () => any, onError?: (error: any) => any) {
getFileAccess().writeText(this.file.path, content, onSuccess, onError);
}
}