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collect.js
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collect.js
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var Path = require('path')
module.exports = collect
function collect(stream, cb) {
// we create a collection of objects, where
// - names is a list of all paths
// - there are per-file objects: { file: <vinyl file>, children [ paths ] }
// - named is a map { path: fo }
var files = {
paths: [],
named: {}, // wrapped files.
unnamed: [], // wrapped files.
}
function get(name) {
if (!files.named[name]) {
files.named[name] = {
children: [],
}
}
return files.named[name]
}
stream.on('data', function(file) {
if (cb === null) {
// already errored, or no way to externalize result
stream.on('data', function() {}) // de-register
return // do nothing.
}
if (file.path) {
// add file to named
var fo = get(file.path)
fo.file = file
// add reference to file at parent
var po = get(Path.dirname(file.path))
if (fo !== po) po.children.push(fo)
// add name to names list.
files.paths.push(file.path)
} else {
files.unnamed.push({ file: file, children: [] })
}
})
stream.on('error', function(err) {
cb && cb(err)
cb = null
})
stream.on('end', function() {
cb && cb(null, files)
cb = null
})
}