/**
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* @license
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* Copyright 2018 Google LLC. All Rights Reserved.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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* =============================================================================
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*/
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const fs = require('fs');
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const path = require('path');
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const util = require('util');
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const copy = util.promisify(fs.copyFile);
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const os = require('os');
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const rename = util.promisify(fs.rename);
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const symlink = util.promisify(fs.symlink);
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const {
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depsLibTensorFlowFrameworkPath,
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depsLibTensorFlowPath,
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destLibTensorFlowFrameworkName,
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destLibTensorFlowName
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} = require('./deps-constants.js');
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const action = process.argv[2];
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let targetDir = process.argv[3];
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// This file is Windows only - the libraries must be placed in the correct
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// directory to work.
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if (os.platform() !== 'win32') {
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throw new Error('Dep staging is only supported on Windows');
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}
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// Some windows machines contain a trailing " char:
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if (targetDir != undefined && targetDir.endsWith('"')) {
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targetDir = targetDir.slice(0, -1);
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}
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// Setup dest binary paths:
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const destLibTensorFlowPath = path.join(targetDir, destLibTensorFlowName);
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const destLibTensorFlowFrameworkPath =
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path.join(targetDir, destLibTensorFlowFrameworkName);
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/**
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* Symlinks the extracted libtensorflow library to the destination path. If the
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* symlink fails, a copy is made.
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*/
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async function symlinkDepsLib() {
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if (destLibTensorFlowPath === undefined) {
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throw new Error('Destination path not supplied!');
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}
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try {
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await symlink(
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path.relative(
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path.dirname(destLibTensorFlowPath), depsLibTensorFlowPath),
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destLibTensorFlowPath);
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} catch (e) {
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console.error(` * Symlink of ${
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destLibTensorFlowPath} failed, creating a copy on disk.`);
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await copy(depsLibTensorFlowPath, destLibTensorFlowPath);
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}
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}
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/**
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* Moves the deps library path to the destination path.
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*/
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async function moveDepsLib() {
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await rename(depsLibTensorFlowPath, destLibTensorFlowPath);
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if (os.platform() !== 'win32') {
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await rename(
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depsLibTensorFlowFrameworkPath, destLibTensorFlowFrameworkPath);
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}
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}
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/**
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* Symlink or move libtensorflow for building the binding.
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*/
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async function run(action) {
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if (action.endsWith('symlink')) {
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// Symlink will happen during `node-gyp rebuild`
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await symlinkDepsLib();
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} else if (action.endsWith('move')) {
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// Move action is used when installing this module as a package.
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await moveDepsLib();
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} else {
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throw new Error('Invalid action: ' + action);
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}
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}
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run(action);
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