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gulp-css-rebase-urls

Rebase relative image URLs

This is still a work in progress

Install

Install with npm

npm install gulp-css-rebase-urls --save-dev

Example

var gulp = require('gulp');
var rebaseUrls = require('gulp-css-rebase-urls');

gulp.task('default', function () {
    gulp.src('css/**/*.css')
        .pipe(rebaseUrls())
        .pipe(concat('style.css')) // <-- just an example
        .pipe(gulp.dest('./build/'));
});

What it tries to solve

Let's say you have this structure:

.
|-- css
|   |-- some
|   |   `-- deep
|   |       |-- path
|   |       |   `-- style.css
|   |       `-- style.css
|   `-- style.css
`-- img
    |-- a.jpg
    |-- b.jpg
    `-- deeper
        `-- c.jpg

In css/style.css you might have:

.sel {
    background: url('../img/deeper/c.jpg') no-repeat top left;
}

And in css/some/deep/path/style.css you might have:

.item {
    background: url('../../../../img/a.jpg') no-repeat top left;
}

When I minify everything, for example to be in ./style.css in production. I want this final file for the css above:

.sel {
    background: url('img/deeper/c.jpg') no-repeat top left;
}
.item {
    background: url('img/a.jpg') no-repeat top left;
}

Pull requests and use cases welcome.