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'use strict'
module.exports = exports = search
var npm = require('./npm.js')
var allPackageSearch = require('./search/all-package-search')
var esearch = require('./search/esearch.js')
var formatPackageStream = require('./search/format-package-stream.js')
var usage = require('./utils/usage')
var output = require('./utils/output.js')
var log = require('npmlog')
var ms = require('mississippi')
search.usage = usage(
'search',
'npm search [--long] [search terms ...]'
)
search.completion = function (opts, cb) {
cb(null, [])
}
function search (args, cb) {
var searchOpts = {
description: npm.config.get('description'),
exclude: prepareExcludes(npm.config.get('searchexclude')),
include: prepareIncludes(args, npm.config.get('searchopts')),
limit: npm.config.get('searchlimit'),
log: log,
staleness: npm.config.get('searchstaleness'),
unicode: npm.config.get('unicode')
}
if (searchOpts.include.length === 0) {
return cb(new Error('search must be called with arguments'))
}
// Used later to figure out whether we had any packages go out
var anyOutput = false
var entriesStream = ms.through.obj()
var esearchWritten = false
esearch(searchOpts).on('data', function (pkg) {
entriesStream.write(pkg)
!esearchWritten && (esearchWritten = true)
}).on('error', function (e) {
if (esearchWritten) {
// If esearch errored after already starting output, we can't fall back.
return entriesStream.emit('error', e)
}
log.warn('search', 'fast search endpoint errored. Using old search.')
allPackageSearch(searchOpts).on('data', function (pkg) {
entriesStream.write(pkg)
}).on('error', function (e) {
entriesStream.emit('error', e)
}).on('end', function () {
entriesStream.end()
})
}).on('end', function () {
entriesStream.end()
})
// Grab a configured output stream that will spit out packages in the
// desired format.
var outputStream = formatPackageStream({
args: args, // --searchinclude options are not highlighted
long: npm.config.get('long'),
description: npm.config.get('description'),
json: npm.config.get('json'),
parseable: npm.config.get('parseable'),
color: npm.color
})
outputStream.on('data', function (chunk) {
if (!anyOutput) { anyOutput = true }
output(chunk.toString('utf8'))
})
log.silly('search', 'searching packages')
ms.pipe(entriesStream, outputStream, function (er) {
if (er) return cb(er)
if (!anyOutput && !npm.config.get('json') && !npm.config.get('parseable')) {
output('No matches found for ' + (args.map(JSON.stringify).join(' ')))
}
log.silly('search', 'search completed')
log.clearProgress()
cb(null, {})
})
}
function prepareIncludes (args, searchopts) {
if (typeof searchopts !== 'string') searchopts = ''
return searchopts.split(/\s+/).concat(args).map(function (s) {
return s.toLowerCase()
}).filter(function (s) { return s })
}
function prepareExcludes (searchexclude) {
var exclude
if (typeof searchexclude === 'string') {
exclude = searchexclude.split(/\s+/)
} else {
exclude = []
}
return exclude.map(function (s) {
return s.toLowerCase()
})
}
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