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https://issues.apache.org/jira/browse/CB-2183?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13552419#comment-13552419
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William Wong edited comment on CB-2183 at 1/14/13 4:05 AM:
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Andrew, in my case, files downloaded from file:///.../www/ could be binaries
(e.g. PNGs). It would be great if we can use standard FileSystem APIs.
To obsolete FileTransfer and use standard HTML5 File APIs, PhoneGap will need
to implement few things around HTML5 Blob:
* HTTP (via XHR) -> file:///
** Sends Blob downloaded by XHR to native
** FYI, ArrayBuffer
(http://www.khronos.org/registry/typedarray/specs/latest/#5) may give you some
hints how to convert Blob <-> DOM String, but looks like it won't be an
efficient approach
* file:///.../Documents -> HTTP (via XHR)
** (*) Implements FileReader.readAsArrayBuffer(Blob), or ask the user to use
Data URI and convert to Blob
(http://stackoverflow.com/questions/4998908/convert-data-uri-to-file-then-append-to-formdata)
* file:///.../www/ -> file:///.../Documents
** Implements (*)
** Implements FileWriter.write(Blob), currently PhoneGap only support
FileWriter.write(utf8)
If the bridge can handle Blob objects, and implement FileWriter.write(Blob)
correctly, we should be able to obsolete FileTransfer.
was (Author: compulim):
Andrew, in my case, files downloaded from file:///.../www/ could be
binaries (e.g. PNGs). It would be great if we can use standard FileSystem APIs.
To obsolete FileTransfer and use standard HTML5 File APIs, PhoneGap will need
to implement few things around HTML5 Blob:
- HTTP (via XHR) -> file:///
- Sends Blob downloaded by XHR to native
- FYI, ArrayBuffer
(http://www.khronos.org/registry/typedarray/specs/latest/#5) may give you some
hints how to convert Blob <-> DOM String, but looks like it won't be an
efficient approach
- file:///.../Documents -> HTTP (via XHR)
- (*) Implements FileReader.readAsArrayBuffer(Blob), or ask the user to use
Data URI and convert to Blob
(http://stackoverflow.com/questions/4998908/convert-data-uri-to-file-then-append-to-formdata)
- file:///.../www/ -> file:///.../Documents
- Implements (*)
- Implements FileWriter.write(Blob), currently PhoneGap only support
FileWriter.write(utf8)
If the bridge can handle Blob objects, and implement FileWriter.write(Blob)
correctly, we should be able to obsolete FileTransfer.
> [iOS] FileTransfer.didReceiveResponse may not return NSHTTPURLResponse
> ----------------------------------------------------------------------
>
> Key: CB-2183
> URL: https://issues.apache.org/jira/browse/CB-2183
> Project: Apache Cordova
> Issue Type: Bug
> Components: iOS
> Affects Versions: 2.2.0
> Environment: Tested on iOS 5.1 and 6.0
> Reporter: William Wong
> Assignee: Shazron Abdullah
> Priority: Minor
> Labels: File, FileTransfer
> Fix For: 2.4.0
>
>
> When FileTransfer.download() is downloading a file from file:///,
> NSURLConnection did not return with NSHTTPURLResponse. This will fail for
> apps that copy files from www/, e.g. apps that initialize its database from a
> pre-built cache packaged in IPA.
> In CB-1600 (fixed in 2.2.0), the fix assumes all response must be
> NSHTTPURLResponse. So when FileTransfer.download() is downloading from a
> file:/// URL (e.g. copying file from www/ folder to Documents/), FileTransfer
> assumed the download operation failed and returned 403.
> Tested if we comment out CB-1600, downloading from file:/// works again.
> We need to find out a better fix instead of commenting out CB-1600.
> According to
> http://developer.apple.com/library/ios/#documentation/Cocoa/Conceptual/URLLoadingSystem/URLLoadingSystem.html#//apple_ref/doc/uid/10000165i,
> URL of file:/// is supported.
> You can test FileTransfer.download() by calling it with
> "encodeURI(document.location.href)" as the "source" parameter.
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