Merge manifest instead of overwrite

[farism]

gulp-rev recently merged some PR's that added support for merging into a manifest file rather than overwriting it completely. This would allow you to rev-all on an entire tmp folder, and use plugins like gulp-changed and gulp-cached to only rev changed files, and only write the changed files to the manifest. There may be a workaround using gulp-remember but I have yet to figure it out.

would this be in scope for gulp-rev-all?

[circlingthesun]

The problem with this is that even if a file did not change, it might
reference a file that did. It would therefore need to update the reference
which will result in a different hash.

On Fri, 23 Jan 2015 11:47 pm farism [email protected] wrote:

gulp-rev recently merged some PR's that added support for merging into a
manifest file rather than overwriting it completely. This allows you to
rev-all on an entire tmp folder, and use plugins like gulp-changed and
gulp-cached to only rev changed files, and only write the changed files to
the manifest. There may be a workaround using gulp-remember but I have yet
to figure it out.

would this be in scope for gulp-rev-all?

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#65.

[farism]

That's a good point. But you could also use gulp-changed or some other caching mechanism further down in the pipeline (after rev, but before generating the manifest) to only write files to disk that have actually changed after being rev'd.

I suppose a user may implement it incorrectly (like in my original use case), but allowing a merge on the manifest means multiple sets of rev'd files could all be in the same manifest. Sure, a user is probably recommended to glob * and rev them all at the same time to make sure that all references are taken care of, but there are times when you only want to rev a subset of files and update the manifest accordingly.

[shaneparsons]

+1 for the ability to append to a manifest rather than re-writing it.

[tigranpetrossian]

@farism off topic: I'd really appreciate if you could explain on how gulp-rev's merge option helps with gulp-changed.

[Briareos]

+1 to this.

We're working on a complex app and would like to use it with PHP scripts. Managing a single rev-manifest file would be easier.

[jonathan-soifer]

👍

[phyng]

👍

Finally I find a trick way to do that, It works for me.

var revAll = new RevAll();
revAll.revisioner.manifest = require('./old-manifest.json');

https://github.com/smysnk/gulp-rev-all/blob/master/revisioner.js#L35

[lalitkapoor]

+1

[manuelbieh]

This does not longer work in 0.9.x - how can I achieve this in the recent version?