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module.exports = remotePackages
var registry = require("../npm-registry-client/index.js")
, containsSingleMatch = require("./contains-single-match.js")
, getCompletions = require("./get-completions.js")
/*
Looks up remote packages for CLI tab-completion.
NOTE: If doVersion is true, versions in the form <name>@<version>
will be completed.
If doTag is true, tags in the form <name>@<tag> will be
completed.
If recurring in true, sequences of multiple packages can be
completed. i.e. for schemes such as:
npm <command> <name>[@<version> [<name>[@<version>] ...]
*/
function remotePackages (args, index, doVersion, doTag
, recurring, cb) {
if (recurring || index < 3) {
var name = (args.length + 1 === index) ? args[args.length - 1] : ""
if (name === undefined) name = ""
if (name.indexOf("/") !== -1) return cb(null, [])
// use up-to 1 hour stale cache. not super urgent.
registry.get("/", null, 3600, function (er, d) {
if (er) return cb(er)
var remoteList = Object.keys(d)
, found = remoteList.indexOf(name)
, unique = found && containsSingleMatch(name, remoteList)
, simpleMatches = getCompletions(name, remoteList)
, uniqueMatch = unique && simpleMatches[0]
, addTag = doTag && (unique || found || name.indexOf("@") !== -1)
, addVer = doVersion && (unique || found || name.indexOf("@") !== -1)
, list = []
, pieces = (uniqueMatch || name).split("@")
, pkgname = pieces[0]
, extras = []
if (unique && !addTag && !addVer) return cb(null, [uniqueMatch])
if (d[pkgname] && (addTag || addVer)) {
if (d[pkgname].versions && addVer) {
extras = extras.concat(Object.keys(d[pkgname].versions))
}
if (d[pkgname]["dist-tags"] && addTag) {
extras = extras.concat(Object.keys(d[pkgname]["dist-tags"]))
}
list = getCompletions(name, list.concat(extras.map(function (e) {
return pkgname + "@" + e
})))
}
if (!unique) list = list.concat(getCompletions(name, remoteList))
return cb(null, list)
})
}
}
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