update packages to latest version

node_modules/npm/lib/help-search.js

@@ -0,0 +1,210 @@
+
+module.exports = helpSearch
+
+var fs = require("graceful-fs")
+  , path = require("path")
+  , asyncMap = require("slide").asyncMap
+  , npm = require("./npm.js")
+  , glob = require("glob")
+  , color = require("ansicolors")
+
+helpSearch.usage = "npm help-search <text>"
+
+function helpSearch (args, silent, cb) {
+  if (typeof cb !== "function") cb = silent, silent = false
+  if (!args.length) return cb(helpSearch.usage)
+
+  var docPath = path.resolve(__dirname, "..", "doc")
+  return glob(docPath + "/*/*.md", function (er, files) {
+    if (er)
+      return cb(er)
+    readFiles(files, function (er, data) {
+      if (er)
+        return cb(er)
+      searchFiles(args, data, function (er, results) {
+        if (er)
+          return cb(er)
+        formatResults(args, results, cb)
+      })
+    })
+  })
+}
+
+function readFiles (files, cb) {
+  var res = {}
+  asyncMap(files, function (file, cb) {
+    fs.readFile(file, 'utf8', function (er, data) {
+      res[file] = data
+      return cb(er)
+    })
+  }, function (er) {
+    return cb(er, res)
+  })
+}
+
+function searchFiles (args, files, cb) {
+  var results = []
+  Object.keys(files).forEach(function (file) {
+    var data = files[file]
+
+    // skip if no matches at all
+    var match
+    for (var a = 0, l = args.length; a < l && !match; a++) {
+      match = data.toLowerCase().indexOf(args[a].toLowerCase()) !== -1
+    }
+    if (!match)
+      return
+
+    var lines = data.split(/\n+/)
+
+    // if a line has a search term, then skip it and the next line.
+    // if the next line has a search term, then skip all 3
+    // otherwise, set the line to null.  then remove the nulls.
+    l = lines.length
+    for (var i = 0; i < l; i ++) {
+      var line = lines[i]
+        , nextLine = lines[i + 1]
+        , ll
+
+      match = false
+      if (nextLine) {
+        for (a = 0, ll = args.length; a < ll && !match; a ++) {
+          match = nextLine.toLowerCase()
+                  .indexOf(args[a].toLowerCase()) !== -1
+        }
+        if (match) {
+          // skip over the next line, and the line after it.
+          i += 2
+          continue
+        }
+      }
+
+      match = false
+      for (a = 0, ll = args.length; a < ll && !match; a ++) {
+        match = line.toLowerCase().indexOf(args[a].toLowerCase()) !== -1
+      }
+      if (match) {
+        // skip over the next line
+        i ++
+        continue
+      }
+
+      lines[i] = null
+    }
+
+    // now squish any string of nulls into a single null
+    lines = lines.reduce(function (l, r) {
+      if (!(r === null && l[l.length-1] === null)) l.push(r)
+      return l
+    }, [])
+
+    if (lines[lines.length - 1] === null) lines.pop()
+    if (lines[0] === null) lines.shift()
+
+    // now see how many args were found at all.
+    var found = {}
+      , totalHits = 0
+    lines.forEach(function (line) {
+      args.forEach(function (arg) {
+        var hit = (line || "").toLowerCase()
+                  .split(arg.toLowerCase()).length - 1
+        if (hit > 0) {
+          found[arg] = (found[arg] || 0) + hit
+          totalHits += hit
+        }
+      })
+    })
+
+    var cmd = "npm help "
+    if (path.basename(path.dirname(file)) === "api") {
+      cmd = "npm apihelp "
+    }
+    cmd += path.basename(file, ".md").replace(/^npm-/, "")
+    results.push({ file: file
+                 , cmd: cmd
+                 , lines: lines
+                 , found: Object.keys(found)
+                 , hits: found
+                 , totalHits: totalHits
+                 })
+  })
+
+  // if only one result, then just show that help section.
+  if (results.length === 1) {
+    return npm.commands.help([results[0].file.replace(/\.md$/, "")], cb)
+  }
+
+  if (results.length === 0) {
+    console.log("No results for " + args.map(JSON.stringify).join(" "))
+    return cb()
+  }
+
+  // sort results by number of results found, then by number of hits
+  // then by number of matching lines
+  results = results.sort(function (a, b) {
+    return a.found.length > b.found.length ? -1
+         : a.found.length < b.found.length ? 1
+         : a.totalHits > b.totalHits ? -1
+         : a.totalHits < b.totalHits ? 1
+         : a.lines.length > b.lines.length ? -1
+         : a.lines.length < b.lines.length ? 1
+         : 0
+  })
+
+  cb(null, results)
+}
+
+function formatResults (args, results, cb) {
+  if (!results) return cb(null)
+
+  var cols = Math.min(process.stdout.columns || Infinity, 80) + 1
+
+  var out = results.map(function (res) {
+    var out = res.cmd
+      , r = Object.keys(res.hits).map(function (k) {
+          return k + ":" + res.hits[k]
+        }).sort(function (a, b) {
+          return a > b ? 1 : -1
+        }).join(" ")
+
+    out += ((new Array(Math.max(1, cols - out.length - r.length)))
+             .join(" ")) + r
+
+    if (!npm.config.get("long")) return out
+
+    out = "\n\n" + out
+         + "\n" + (new Array(cols)).join("—") + "\n"
+         + res.lines.map(function (line, i) {
+      if (line === null || i > 3) return ""
+      for (var out = line, a = 0, l = args.length; a < l; a ++) {
+        var finder = out.toLowerCase().split(args[a].toLowerCase())
+          , newOut = ""
+          , p = 0
+
+        finder.forEach(function (f) {
+          newOut += out.substr(p, f.length)
+
+          var hilit = out.substr(p + f.length, args[a].length)
+          if (npm.color) hilit = color.bgBlack(color.red(hilit))
+          newOut += hilit
+
+          p += f.length + args[a].length
+        })
+      }
+
+      return newOut
+    }).join("\n").trim()
+    return out
+  }).join("\n")
+
+  if (results.length && !npm.config.get("long")) {
+    out = "Top hits for "+(args.map(JSON.stringify).join(" "))
+        + "\n" + (new Array(cols)).join("—") + "\n"
+        + out
+        + "\n" + (new Array(cols)).join("—") + "\n"
+        + "(run with -l or --long to see more context)"
+  }
+
+  console.log(out.trim())
+  cb(null, results)
+}