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Edit File : help-search.js \| Size : 5.64 KB
module.exports = helpSearch var fs = require('graceful-fs') var path = require('path') var asyncMap = require('slide').asyncMap var npm = require('./npm.js') var glob = require('glob') var color = require('ansicolors') var output = require('./utils/output.js') 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] var nextLine = lines[i + 1] var 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 = {} var 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) { output('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 var 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()) var newOut = '' var 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)' } output(out.trim()) cb(null, results) } Back

Edit File : help-search.js | Size : 5.64 KB

module.exports = helpSearch

var fs = require('graceful-fs')
var path = require('path')
var asyncMap = require('slide').asyncMap
var npm = require('./npm.js')
var glob = require('glob')
var color = require('ansicolors')
var output = require('./utils/output.js')

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]
      var nextLine = lines[i + 1]
      var 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 = {}
    var 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) {
    output('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
    var 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())
          var newOut = ''
          var 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)'
  }

output(out.trim())
  cb(null, results)
}

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