AlkantarClanX12
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// npm view [pkg [pkg ...]]
module.exports = view
var npm = require('./npm.js')
var readJson = require('read-package-json')
var log = require('npmlog')
var util = require('util')
var semver = require('semver')
var mapToRegistry = require('./utils/map-to-registry.js')
var npa = require('npm-package-arg')
var path = require('path')
var usage = require('./utils/usage')
view.usage = usage(
'view',
'npm view [<@scope>/]<pkg>[@<version>] [<field>[.subfield]...]'
)
view.completion = function (opts, cb) {
if (opts.conf.argv.remain.length <= 2) {
// FIXME: there used to be registry completion here, but it stopped making
// sense somewhere around 50,000 packages on the registry
return cb()
}
// have the package, get the fields.
var tag = npm.config.get('tag')
mapToRegistry(opts.conf.argv.remain[2], npm.config, function (er, uri, auth) {
if (er) return cb(er)
npm.registry.get(uri, { auth: auth }, function (er, d) {
if (er) return cb(er)
var dv = d.versions[d['dist-tags'][tag]]
var fields = []
d.versions = Object.keys(d.versions).sort(semver.compareLoose)
fields = getFields(d).concat(getFields(dv))
cb(null, fields)
})
})
function getFields (d, f, pref) {
f = f || []
if (!d) return f
pref = pref || []
Object.keys(d).forEach(function (k) {
if (k.charAt(0) === '_' || k.indexOf('.') !== -1) return
var p = pref.concat(k).join('.')
f.push(p)
if (Array.isArray(d[k])) {
d[k].forEach(function (val, i) {
var pi = p + '[' + i + ']'
if (val && typeof val === 'object') getFields(val, f, [p])
else f.push(pi)
})
return
}
if (typeof d[k] === 'object') getFields(d[k], f, [p])
})
return f
}
}
function view (args, silent, cb) {
if (typeof cb !== 'function') {
cb = silent
silent = false
}
if (!args.length) args = ['.']
var pkg = args.shift()
var nv = npa(pkg)
var name = nv.name
var local = (name === '.' || !name)
if (npm.config.get('global') && local) {
return cb(new Error('Cannot use view command in global mode.'))
}
if (local) {
var dir = npm.prefix
readJson(path.resolve(dir, 'package.json'), function (er, d) {
d = d || {}
if (er && er.code !== 'ENOENT' && er.code !== 'ENOTDIR') return cb(er)
if (!d.name) return cb(new Error('Invalid package.json'))
var p = d.name
nv = npa(p)
if (pkg && ~pkg.indexOf('@')) {
nv.rawSpec = pkg.split('@')[pkg.indexOf('@')]
}
fetchAndRead(nv, args, silent, cb)
})
} else {
fetchAndRead(nv, args, silent, cb)
}
}
function fetchAndRead (nv, args, silent, cb) {
// get the data about this package
var name = nv.name
var version = nv.rawSpec || npm.config.get('tag')
mapToRegistry(name, npm.config, function (er, uri, auth) {
if (er) return cb(er)
npm.registry.get(uri, { auth: auth }, function (er, data) {
if (er) return cb(er)
if (data['dist-tags'] && data['dist-tags'].hasOwnProperty(version)) {
version = data['dist-tags'][version]
}
if (data.time && data.time.unpublished) {
var u = data.time.unpublished
er = new Error('Unpublished by ' + u.name + ' on ' + u.time)
er.statusCode = 404
er.code = 'E404'
er.pkgid = data._id
return cb(er, data)
}
var results = []
var error = null
var versions = data.versions || {}
data.versions = Object.keys(versions).sort(semver.compareLoose)
if (!args.length) args = ['']
// remove readme unless we asked for it
if (args.indexOf('readme') === -1) {
delete data.readme
}
Object.keys(versions).forEach(function (v) {
if (semver.satisfies(v, version, true)) {
args.forEach(function (args) {
// remove readme unless we asked for it
if (args.indexOf('readme') !== -1) {
delete versions[v].readme
}
results.push(showFields(data, versions[v], args))
})
}
})
results = results.reduce(reducer, {})
var retval = results
if (args.length === 1 && args[0] === '') {
retval = cleanBlanks(retval)
log.silly('cleanup', retval)
}
if (error || silent) cb(error, retval)
else printData(results, data._id, cb.bind(null, error, retval))
})
})
}
function cleanBlanks (obj) {
var clean = {}
Object.keys(obj).forEach(function (version) {
clean[version] = obj[version]['']
})
return clean
}
function reducer (l, r) {
if (r) {
Object.keys(r).forEach(function (v) {
l[v] = l[v] || {}
Object.keys(r[v]).forEach(function (t) {
l[v][t] = r[v][t]
})
})
}
return l
}
// return whatever was printed
function showFields (data, version, fields) {
var o = {}
;[data, version].forEach(function (s) {
Object.keys(s).forEach(function (k) {
o[k] = s[k]
})
})
return search(o, fields.split('.'), version.version, fields)
}
function search (data, fields, version, title) {
var field
var tail = fields
while (!field && fields.length) field = tail.shift()
fields = [field].concat(tail)
var o
if (!field && !tail.length) {
o = {}
o[version] = {}
o[version][title] = data
return o
}
var index = field.match(/(.+)\[([^\]]+)\]$/)
if (index) {
field = index[1]
index = index[2]
if (data.field && data.field.hasOwnProperty(index)) {
return search(data[field][index], tail, version, title)
} else {
field = field + '[' + index + ']'
}
}
if (Array.isArray(data)) {
if (data.length === 1) {
return search(data[0], fields, version, title)
}
var results = []
data.forEach(function (data, i) {
var tl = title.length
var newt = title.substr(0, tl - fields.join('.').length - 1) +
'[' + i + ']' + [''].concat(fields).join('.')
results.push(search(data, fields.slice(), version, newt))
})
results = results.reduce(reducer, {})
return results
}
if (!data.hasOwnProperty(field)) return undefined
data = data[field]
if (tail.length) {
if (typeof data === 'object') {
// there are more fields to deal with.
return search(data, tail, version, title)
} else {
return new Error('Not an object: ' + data)
}
}
o = {}
o[version] = {}
o[version][title] = data
return o
}
function printData (data, name, cb) {
var versions = Object.keys(data)
var msg = ''
var msgJson = []
var includeVersions = versions.length > 1
var includeFields
versions.forEach(function (v) {
var fields = Object.keys(data[v])
includeFields = includeFields || (fields.length > 1)
if (npm.config.get('json')) msgJson.push({})
fields.forEach(function (f) {
var d = cleanup(data[v][f])
if (fields.length === 1 && npm.config.get('json')) {
msgJson[msgJson.length - 1][f] = d
}
if (includeVersions || includeFields || typeof d !== 'string') {
if (npm.config.get('json')) {
msgJson[msgJson.length - 1][f] = d
} else {
d = util.inspect(d, false, 5, npm.color)
}
} else if (typeof d === 'string' && npm.config.get('json')) {
d = JSON.stringify(d)
}
if (!npm.config.get('json')) {
if (f && includeFields) f += ' = '
if (d.indexOf('\n') !== -1) d = ' \n' + d
msg += (includeVersions ? name + '@' + v + ' ' : '') +
(includeFields ? f : '') + d + '\n'
}
})
})
if (npm.config.get('json')) {
if (msgJson.length && Object.keys(msgJson[0]).length === 1) {
var k = Object.keys(msgJson[0])[0]
msgJson = msgJson.map(function (m) { return m[k] })
}
if (msgJson.length === 1) {
msg = JSON.stringify(msgJson[0], null, 2) + '\n'
} else if (msgJson.length > 1) {
msg = JSON.stringify(msgJson, null, 2) + '\n'
}
}
// preserve output symmetry by adding a whitespace-only line at the end if
// there's one at the beginning
if (/^\s*\n/.test(msg)) msg += '\n'
// disable the progress bar entirely, as we can't meaningfully update it if
// we may have partial lines printed.
log.disableProgress()
// print directly to stdout to not unnecessarily add blank lines
process.stdout.write(msg)
cb(null, data)
}
function cleanup (data) {
if (Array.isArray(data)) {
return data.map(cleanup)
}
if (!data || typeof data !== 'object') return data
if (typeof data.versions === 'object' &&
data.versions &&
!Array.isArray(data.versions)) {
data.versions = Object.keys(data.versions || {})
}
var keys = Object.keys(data)
keys.forEach(function (d) {
if (d.charAt(0) === '_') delete data[d]
else if (typeof data[d] === 'object') data[d] = cleanup(data[d])
})
keys = Object.keys(data)
if (keys.length <= 3 &&
data.name &&
(keys.length === 1 ||
keys.length === 3 && data.email && data.url ||
keys.length === 2 && (data.email || data.url))) {
data = unparsePerson(data)
}
return data
}
function unparsePerson (d) {
if (typeof d === 'string') return d
return d.name +
(d.email ? ' <' + d.email + '>' : '') +
(d.url ? ' (' + d.url + ')' : '')
}