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https://issues.apache.org/jira/browse/CB-11117?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15248634#comment-15248634
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ASF GitHub Bot commented on CB-11117:
-------------------------------------
GitHub user jasongin opened a pull request:
https://github.com/apache/cordova-android/pull/295
CB-11117: Use FileUpdater to optimize prepare for android platform
This uses the FileUpdater module added in
https://github.com/apache/cordova-lib/pull/429 to optionally skip copying files
that didn't change. Some refactoring was required because previously the target
directories would just be wiped before copying; now we need to map out the
source and target directories so the FileUpdater has the necessary information
to determine the optimal set of file operations.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/jasongin/cordova-android master
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/cordova-android/pull/295.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #295
----
commit c8e504de768aa373874fd2f8895b497c5581652b
Author: Jason Ginchereau <jason...@microsoft.com>
Date: 2016-04-19T20:28:13Z
CB-11117: Use FileUpdater to optimize prepare for android platform
----
> Preparing platforms should skip copying files which haven't changed
> -------------------------------------------------------------------
>
> Key: CB-11117
> URL: https://issues.apache.org/jira/browse/CB-11117
> Project: Apache Cordova
> Issue Type: Improvement
> Components: Android, iOS, Windows
> Reporter: Jason Ginchereau
> Assignee: Jason Ginchereau
>
> Many cordova CLI commands include a "prepare" operation, including 'cordova
> build', 'cordova run', 'cordova plugin add', and more. Every time each of
> those commands runs, the target platform is "prepared", which involves
> copying all files from the [<project>/www,
> <project>/platforms/<platform>/platform_www, <project>/merges/<platform>] to
> the platform's target www folder, as well as copying a bunch of icons and
> splash screens to platform-specific locations.
> For the very first prepare of a platform, all that file copying is necessary.
> But most of the time after that most of the files being copied have not
> changed and therefore don't really need to be copied again. So the typical
> developer inner loop (edit a few source files, build and run the app, repeat)
> is a lot slower than it could be for a Cordova project, especially one that
> includes a significant number of source files or resources.
> Instead, Cordova should be smart enough to skip copying of files that haven't
> changed, based on their last-modified timestamp. (But also there should still
> be a way to force a clean/full/non-incremental build if desired.)
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