preinstall.js

+ rewrote the preinstall.py in js so the library can be installed without python requirement
+ integrate PR LedgerHQ#29
+ fixes installation of the library on windows. At least on Travis it was failing with python error (some SSL errors)

package.json

@@ -1,6 +1,7 @@
 {
   "name": "@ledgerhq/ledger-core",
   "version": "2.3.0-beta.1",
+  "libcoreVersion": "2.7.0-rc-ad6ac9",
   "description": "Ledger Core Library cross-platform C++ bindings for NodeJs",
   "main": "js/index.js",
   "repository": {
@@ -9,7 +10,7 @@
   },
   "gypfile": true,
   "scripts": {
-    "preinstall": "python preinstall.py",
+    "preinstall": "node preinstall.js",
     "gypinstall": "node-gyp rebuild",
     "gypclean": "node-gyp clean",
     "gypconfig": "node-gyp configure",
@@ -42,6 +43,7 @@
     "eslint-config-prettier": "^2.9.0",
     "node-gyp": "^3.6.2",
     "prettier": "^1.12.1",
+    "request": "^2.88.0",
     "rimraf": "^2.5.3"
   }
 }

preinstall.js

@@ -0,0 +1,75 @@
+const fs = require('fs')
+const path = require('path')
+var request = require('request')
+const { libcoreVersion } = require('./package.json')
+
+const perPlatform = {
+  linux: {
+    dir: 'linux',
+    files: ['libledger-core.so'],
+    chmod: 0o755,
+  },
+  darwin: {
+    dir: 'macos',
+    files: ['libledger-core.dylib'],
+    chmod: 0o755,
+  },
+  win32: {
+    dir: 'win/vs2015',
+    file: ['ledger-core.dll', 'ledger-core.lib', 'crypto.dll'],
+  },
+}
+
+const conf = perPlatform[process.platform]
+if (!conf) {
+  console.error(`Platform ${process.platform} is not supported`)
+  process.exit(1)
+}
+const endpointURL = `https://s3-eu-west-1.amazonaws.com/ledger-lib-ledger-core/${libcoreVersion}/${
+  conf.dir
+}`
+
+if (!fs.existsSync('lib')) {
+  fs.mkdirSync('lib')
+}
+
+conf.files.reduce(
+  (p, file) =>
+    p.then(() =>
+      get(file).then(() => {
+        if (conf.chmod) {
+          fs.chmodSync(`lib/${file}`, conf.chmod)
+        }
+      }),
+    ),
+  Promise.resolve(),
+)
+
+function get(file) {
+  return new Promise((resolve, reject) => {
+    const dest = `lib/${file}`
+    if (process.env.LEDGER_CORE_LOCAL_BUILD) {
+      const src = path.join(process.env.LEDGER_CORE_LOCAL_BUILD, file)
+      console.log(`Copy ${src} -> ${dest}`)
+      fs.copyFile(src, dest, err => {
+        if (err) reject(err)
+        else resolve()
+      })
+    } else {
+      const url = `${endpointURL}/${file}`
+      console.log(`Downloading ${url} ...`)
+      const f = fs.createWriteStream(dest)
+      f.on('finish', () => {
+        console.log(`${file} downloaded.`)
+        f.close(resolve)
+      })
+      request
+        .get(url)
+        .on('error', err => {
+          fs.unlink(dest)
+          reject(err)
+        })
+        .pipe(f)
+    }
+  })
+}