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module.exports = exports = search
var npm = require("./npm.js")
, columnify = require("columnify")
, updateIndex = require("./cache/update-index.js")
search.usage = "npm search [some search terms ...]"
search.completion = function (opts, cb) {
var compl = {}
, partial = opts.partialWord
, ipartial = partial.toLowerCase()
, plen = partial.length
// get the batch of data that matches so far.
// this is an example of using npm.commands.search programmatically
// to fetch data that has been filtered by a set of arguments.
search(opts.conf.argv.remain.slice(2), true, function (er, data) {
if (er) return cb(er)
Object.keys(data).forEach(function (name) {
data[name].words.split(" ").forEach(function (w) {
if (w.toLowerCase().indexOf(ipartial) === 0) {
compl[partial + w.substr(plen)] = true
}
})
})
cb(null, Object.keys(compl))
})
}
function search (args, silent, staleness, cb) {
if (typeof cb !== "function") cb = staleness, staleness = 600
if (typeof cb !== "function") cb = silent, silent = false
var searchopts = npm.config.get("searchopts")
var searchexclude = npm.config.get("searchexclude")
if (typeof searchopts !== "string") searchopts = ""
searchopts = searchopts.split(/\s+/)
var opts = searchopts.concat(args).map(function (s) {
return s.toLowerCase()
}).filter(function (s) { return s })
if (typeof searchexclude === "string") {
searchexclude = searchexclude.split(/\s+/)
} else {
searchexclude = []
}
searchexclude = searchexclude.map(function (s) {
return s.toLowerCase()
})
getFilteredData(staleness, opts, searchexclude, function (er, data) {
// now data is the list of data that we want to show.
// prettify and print it, and then provide the raw
// data to the cb.
if (er || silent) return cb(er, data)
console.log(prettify(data, args))
cb(null, data)
})
}
function getFilteredData (staleness, args, notArgs, cb) {
updateIndex(staleness, function (er, data) {
if (er) return cb(er)
return cb(null, filter(data, args, notArgs))
})
}
function filter (data, args, notArgs) {
// data={<name>:{package data}}
return Object.keys(data).map(function (d) {
return data[d]
}).filter(function (d) {
return typeof d === "object"
}).map(stripData).map(getWords).filter(function (data) {
return filterWords(data, args, notArgs)
}).reduce(function (l, r) {
l[r.name] = r
return l
}, {})
}
function stripData (data) {
return { name: data.name
, description: npm.config.get("description") ? data.description : ""
, maintainers: (data.maintainers || []).map(function (m) {
return "=" + m.name
})
, url: !Object.keys(data.versions || {}).length ? data.url : null
, keywords: data.keywords || []
, version: Object.keys(data.versions || {})[0] || []
, time: data.time
&& data.time.modified
&& (new Date(data.time.modified).toISOString()
.split("T").join(" ")
.replace(/:[0-9]{2}\.[0-9]{3}Z$/, ""))
.slice(0, -5) // remove time
|| "prehistoric"
}
}
function getWords (data) {
data.words = [ data.name ]
.concat(data.description)
.concat(data.maintainers)
.concat(data.url && ("<" + data.url + ">"))
.concat(data.keywords)
.map(function (f) { return f && f.trim && f.trim() })
.filter(function (f) { return f })
.join(" ")
.toLowerCase()
return data
}
function filterWords (data, args, notArgs) {
var words = data.words
for (var i = 0, l = args.length; i < l; i ++) {
if (!match(words, args[i])) return false
}
for (i = 0, l = notArgs.length; i < l; i ++) {
if (match(words, notArgs[i])) return false
}
return true
}
function match (words, arg) {
if (arg.charAt(0) === "/") {
arg = arg.replace(/\/$/, "")
arg = new RegExp(arg.substr(1, arg.length - 1))
return words.match(arg)
}
return words.indexOf(arg) !== -1
}
function prettify (data, args) {
var searchsort = (npm.config.get("searchsort") || "NAME").toLowerCase()
, sortField = searchsort.replace(/^\-+/, "")
, searchRev = searchsort.charAt(0) === "-"
, truncate = !npm.config.get("long")
if (Object.keys(data).length === 0) {
return "No match found for "+(args.map(JSON.stringify).join(" "))
}
var lines = Object.keys(data).map(function (d) {
// strip keyname
return data[d]
}).map(function(dat) {
dat.author = dat.maintainers
delete dat.maintainers
dat.date = dat.time
delete dat.time
return dat
}).map(function(dat) {
// split keywords on whitespace or ,
if (typeof dat.keywords === "string") {
dat.keywords = dat.keywords.split(/[,\s]+/)
}
if (Array.isArray(dat.keywords)) {
dat.keywords = dat.keywords.join(" ")
}
// split author on whitespace or ,
if (typeof dat.author === "string") {
dat.author = dat.author.split(/[,\s]+/)
}
if (Array.isArray(dat.author)) {
dat.author = dat.author.join(" ")
}
return dat
})
lines.sort(function(a, b) {
var aa = a[sortField].toLowerCase()
, bb = b[sortField].toLowerCase()
return aa === bb ? 0
: aa < bb ? -1 : 1
})
if (searchRev) lines.reverse()
var columns = npm.config.get("description")
? ["name", "description", "author", "date", "version", "keywords"]
: ["name", "author", "date", "version", "keywords"]
var output = columnify(lines, {
include: columns
, truncate: truncate
, config: {
name: { maxWidth: 40, truncate: false, truncateMarker: "" }
, description: { maxWidth: 60 }
, author: { maxWidth: 20 }
, date: { maxWidth: 11 }
, version: { maxWidth: 11 }
, keywords: { maxWidth: Infinity }
}
})
output = trimToMaxWidth(output)
output = highlightSearchTerms(output, args)
return output
}
var colors = [31, 33, 32, 36, 34, 35 ]
, cl = colors.length
function addColorMarker (str, arg, i) {
var m = i % cl + 1
, markStart = String.fromCharCode(m)
, markEnd = String.fromCharCode(0)
if (arg.charAt(0) === "/") {
//arg = arg.replace(/\/$/, "")
return str.replace( new RegExp(arg.substr(1, arg.length - 2), "gi")
, function (bit) { return markStart + bit + markEnd } )
}
// just a normal string, do the split/map thing
var pieces = str.toLowerCase().split(arg.toLowerCase())
, p = 0
return pieces.map(function (piece) {
piece = str.substr(p, piece.length)
var mark = markStart
+ str.substr(p+piece.length, arg.length)
+ markEnd
p += piece.length + arg.length
return piece + mark
}).join("")
}
function colorize (line) {
for (var i = 0; i < cl; i ++) {
var m = i + 1
var color = npm.color ? "\033["+colors[i]+"m" : ""
line = line.split(String.fromCharCode(m)).join(color)
}
var uncolor = npm.color ? "\033[0m" : ""
return line.split("\u0000").join(uncolor)
}
function getMaxWidth() {
var cols
try {
var tty = require("tty")
, stdout = process.stdout
cols = !tty.isatty(stdout.fd) ? Infinity : process.stdout.getWindowSize()[0]
cols = (cols === 0) ? Infinity : cols
} catch (ex) { cols = Infinity }
return cols
}
function trimToMaxWidth(str) {
var maxWidth = getMaxWidth()
return str.split("\n").map(function(line) {
return line.slice(0, maxWidth)
}).join("\n")
}
function highlightSearchTerms(str, terms) {
terms.forEach(function (arg, i) {
str = addColorMarker(str, arg, i)
})
return colorize(str).trim()
}
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