File: index.js

package info (click to toggle)
node-gyp-build 4.2.3-1
  • links: PTS, VCS
  • area: main
  • in suites: sid
  • size: 144 kB
  • sloc: javascript: 414; makefile: 9
file content (166 lines) | stat: -rw-r--r-- 4,875 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
var fs = require('fs')
var path = require('path')
var os = require('os')

// Workaround to fix webpack's build warnings: 'the request of a dependency is an expression'
var runtimeRequire = typeof __webpack_require__ === 'function' ? __non_webpack_require__ : require // eslint-disable-line

var vars = (process.config && process.config.variables) || {}
var prebuildsOnly = !!process.env.PREBUILDS_ONLY
var abi = process.versions.modules // TODO: support old node where this is undef
var runtime = isElectron() ? 'electron' : 'node'
var arch = os.arch()
var platform = os.platform()
var libc = process.env.LIBC || (isAlpine(platform) ? 'musl' : 'glibc')
var armv = process.env.ARM_VERSION || (arch === 'arm64' ? '8' : vars.arm_version) || ''
var uv = (process.versions.uv || '').split('.')[0]

module.exports = load

function load (dir) {
  return runtimeRequire(load.path(dir))
}

load.path = function (dir) {
  dir = path.resolve(dir || '.')

  try {
    var name = runtimeRequire(path.join(dir, 'package.json')).name.toUpperCase().replace(/-/g, '_')
    if (process.env[name + '_PREBUILD']) dir = process.env[name + '_PREBUILD']
  } catch (err) {}

  if (!prebuildsOnly) {
    var release = getFirst(path.join(dir, 'build/Release'), matchBuild)
    if (release) return release

    var debug = getFirst(path.join(dir, 'build/Debug'), matchBuild)
    if (debug) return debug
  }

  var prebuild = resolve(dir)
  if (prebuild) return prebuild

  var nearby = resolve(path.dirname(process.execPath))
  if (nearby) return nearby

  var target = [
    'platform=' + platform,
    'arch=' + arch,
    'runtime=' + runtime,
    'abi=' + abi,
    'uv=' + uv,
    armv ? 'armv=' + armv : '',
    'libc=' + libc,
    'node=' + process.versions.node,
    (process.versions && process.versions.electron) ? 'electron=' + process.versions.electron : '',
    typeof __webpack_require__ === 'function' ? 'webpack=true' : '' // eslint-disable-line
  ].filter(Boolean).join(' ')

  throw new Error('No native build was found for ' + target + '\n    loaded from: ' + dir + '\n')

  function resolve (dir) {
    // Find most specific flavor first
    var prebuilds = path.join(dir, 'prebuilds', platform + '-' + arch)
    var parsed = readdirSync(prebuilds).map(parseTags)
    var candidates = parsed.filter(matchTags(runtime, abi))
    var winner = candidates.sort(compareTags(runtime))[0]
    if (winner) return path.join(prebuilds, winner.file)
  }
}

function readdirSync (dir) {
  try {
    return fs.readdirSync(dir)
  } catch (err) {
    return []
  }
}

function getFirst (dir, filter) {
  var files = readdirSync(dir).filter(filter)
  return files[0] && path.join(dir, files[0])
}

function matchBuild (name) {
  return /\.node$/.test(name)
}

function parseTags (file) {
  var arr = file.split('.')
  var extension = arr.pop()
  var tags = { file: file, specificity: 0 }

  if (extension !== 'node') return

  for (var i = 0; i < arr.length; i++) {
    var tag = arr[i]

    if (tag === 'node' || tag === 'electron' || tag === 'node-webkit') {
      tags.runtime = tag
    } else if (tag === 'napi') {
      tags.napi = true
    } else if (tag.slice(0, 3) === 'abi') {
      tags.abi = tag.slice(3)
    } else if (tag.slice(0, 2) === 'uv') {
      tags.uv = tag.slice(2)
    } else if (tag.slice(0, 4) === 'armv') {
      tags.armv = tag.slice(4)
    } else if (tag === 'glibc' || tag === 'musl') {
      tags.libc = tag
    } else {
      continue
    }

    tags.specificity++
  }

  return tags
}

function matchTags (runtime, abi) {
  return function (tags) {
    if (tags == null) return false
    if (tags.runtime !== runtime && !runtimeAgnostic(tags)) return false
    if (tags.abi !== abi && !tags.napi) return false
    if (tags.uv && tags.uv !== uv) return false
    if (tags.armv && tags.armv !== armv) return false
    if (tags.libc && tags.libc !== libc) return false

    return true
  }
}

function runtimeAgnostic (tags) {
  return tags.runtime === 'node' && tags.napi
}

function compareTags (runtime) {
  // Precedence: non-agnostic runtime, abi over napi, then by specificity.
  return function (a, b) {
    if (a.runtime !== b.runtime) {
      return a.runtime === runtime ? -1 : 1
    } else if (a.abi !== b.abi) {
      return a.abi ? -1 : 1
    } else if (a.specificity !== b.specificity) {
      return a.specificity > b.specificity ? -1 : 1
    } else {
      return 0
    }
  }
}

function isElectron () {
  if (process.versions && process.versions.electron) return true
  if (process.env.ELECTRON_RUN_AS_NODE) return true
  return typeof window !== 'undefined' && window.process && window.process.type === 'renderer'
}

function isAlpine (platform) {
  return platform === 'linux' && fs.existsSync('/etc/alpine-release')
}

// Exposed for unit tests
// TODO: move to lib
load.parseTags = parseTags
load.matchTags = matchTags
load.compareTags = compareTags