3 var fs = require('fs');
5 module.exports = exports;
7 var versionArray = process.version
15 var napi_multiple_commands = [
27 var napi_build_version_tag = 'napi_build_version=';
29 module.exports.get_napi_version = function(target) { // target may be undefined
30 // returns the non-zero numeric napi version or undefined if napi is not supported.
31 // correctly supporting target requires an updated cross-walk
32 var version = process.versions.napi; // can be undefined
33 if (!version) { // this code should never need to be updated
34 if (versionArray[0] === 9 && versionArray[1] >= 3) version = 2; // 9.3.0+
35 else if (versionArray[0] === 8) version = 1; // 8.0.0+
40 module.exports.get_napi_version_as_string = function(target) {
41 // returns the napi version as a string or an empty string if napi is not supported.
42 var version = module.exports.get_napi_version(target);
43 return version ? ''+version : '';
46 module.exports.validate_package_json = function(package_json, opts) { // throws Error
48 var binary = package_json.binary;
49 var module_path_ok = pathOK(binary.module_path);
50 var remote_path_ok = pathOK(binary.remote_path);
51 var package_name_ok = pathOK(binary.package_name);
52 var napi_build_versions = module.exports.get_napi_build_versions(package_json,opts,true);
53 var napi_build_versions_raw = module.exports.get_napi_build_versions_raw(package_json);
55 if (napi_build_versions) {
56 napi_build_versions.forEach(function(napi_build_version){
57 if (!(parseInt(napi_build_version,10) === napi_build_version && napi_build_version > 0)) {
58 throw new Error("All values specified in napi_versions must be positive integers.");
63 if (napi_build_versions && (!module_path_ok || (!remote_path_ok && !package_name_ok))) {
64 throw new Error("When napi_versions is specified; module_path and either remote_path or " +
65 "package_name must contain the substitution string '{napi_build_version}`.");
68 if ((module_path_ok || remote_path_ok || package_name_ok) && !napi_build_versions_raw) {
69 throw new Error("When the substitution string '{napi_build_version}` is specified in " +
70 "module_path, remote_path, or package_name; napi_versions must also be specified.");
73 if (napi_build_versions && !module.exports.get_best_napi_build_version(package_json, opts) &&
74 module.exports.build_napi_only(package_json)) {
76 'The N-API version of this Node instance is ' + module.exports.get_napi_version(opts ? opts.target : undefined) + '. ' +
77 'This module supports N-API version(s) ' + module.exports.get_napi_build_versions_raw(package_json) + '. ' +
78 'This Node instance cannot run this module.');
81 if (napi_build_versions_raw && !napi_build_versions && module.exports.build_napi_only(package_json)) {
83 'The N-API version of this Node instance is ' + module.exports.get_napi_version(opts ? opts.target : undefined) + '. ' +
84 'This module supports N-API version(s) ' + module.exports.get_napi_build_versions_raw(package_json) + '. ' +
85 'This Node instance cannot run this module.');
90 function pathOK (path) {
91 return path && (path.indexOf('{napi_build_version}') !== -1 || path.indexOf('{node_napi_label}') !== -1);
94 module.exports.expand_commands = function(package_json, opts, commands) {
95 var expanded_commands = [];
96 var napi_build_versions = module.exports.get_napi_build_versions(package_json, opts);
97 commands.forEach(function(command){
98 if (napi_build_versions && command.name === 'install') {
99 var napi_build_version = module.exports.get_best_napi_build_version(package_json, opts);
100 var args = napi_build_version ? [ napi_build_version_tag+napi_build_version ] : [ ];
101 expanded_commands.push ({ name: command.name, args: args });
102 } else if (napi_build_versions && napi_multiple_commands.indexOf(command.name) !== -1) {
103 napi_build_versions.forEach(function(napi_build_version){
104 var args = command.args.slice();
105 args.push (napi_build_version_tag+napi_build_version);
106 expanded_commands.push ({ name: command.name, args: args });
109 expanded_commands.push (command);
112 return expanded_commands;
115 module.exports.get_napi_build_versions = function(package_json, opts, warnings) { // opts may be undefined
116 var log = require('npmlog');
117 var napi_build_versions = [];
118 var supported_napi_version = module.exports.get_napi_version(opts ? opts.target : undefined);
119 // remove duplicates, verify each napi version can actaully be built
120 if (package_json.binary && package_json.binary.napi_versions) {
121 package_json.binary.napi_versions.forEach(function(napi_version) {
122 var duplicated = napi_build_versions.indexOf(napi_version) !== -1;
123 if (!duplicated && supported_napi_version && napi_version <= supported_napi_version) {
124 napi_build_versions.push(napi_version);
125 } else if (warnings && !duplicated && supported_napi_version) {
126 log.info('This Node instance does not support builds for N-API version', napi_version);
130 if (opts && opts["build-latest-napi-version-only"]) {
131 var latest_version = 0;
132 napi_build_versions.forEach(function(napi_version) {
133 if (napi_version > latest_version) latest_version = napi_version;
135 napi_build_versions = latest_version ? [ latest_version ] : [];
137 return napi_build_versions.length ? napi_build_versions : undefined;
140 module.exports.get_napi_build_versions_raw = function(package_json) {
141 var napi_build_versions = [];
143 if (package_json.binary && package_json.binary.napi_versions) {
144 package_json.binary.napi_versions.forEach(function(napi_version) {
145 if (napi_build_versions.indexOf(napi_version) === -1) {
146 napi_build_versions.push(napi_version);
150 return napi_build_versions.length ? napi_build_versions : undefined;
153 module.exports.get_command_arg = function(napi_build_version) {
154 return napi_build_version_tag + napi_build_version;
157 module.exports.get_napi_build_version_from_command_args = function(command_args) {
158 for (var i = 0; i < command_args.length; i++) {
159 var arg = command_args[i];
160 if (arg.indexOf(napi_build_version_tag) === 0) {
161 return parseInt(arg.substr(napi_build_version_tag.length),10);
167 module.exports.swap_build_dir_out = function(napi_build_version) {
168 if (napi_build_version) {
169 var rm = require('rimraf');
170 rm.sync(module.exports.get_build_dir(napi_build_version));
171 fs.renameSync('build', module.exports.get_build_dir(napi_build_version));
175 module.exports.swap_build_dir_in = function(napi_build_version) {
176 if (napi_build_version) {
177 var rm = require('rimraf');
179 fs.renameSync(module.exports.get_build_dir(napi_build_version), 'build');
183 module.exports.get_build_dir = function(napi_build_version) {
184 return 'build-tmp-napi-v'+napi_build_version;
187 module.exports.get_best_napi_build_version = function(package_json, opts) {
188 var best_napi_build_version = 0;
189 var napi_build_versions = module.exports.get_napi_build_versions (package_json, opts);
190 if (napi_build_versions) {
191 var our_napi_version = module.exports.get_napi_version(opts ? opts.target : undefined);
192 napi_build_versions.forEach(function(napi_build_version){
193 if (napi_build_version > best_napi_build_version &&
194 napi_build_version <= our_napi_version) {
195 best_napi_build_version = napi_build_version;
199 return best_napi_build_version === 0 ? undefined : best_napi_build_version;
202 module.exports.build_napi_only = function(package_json) {
203 return package_json.binary && package_json.binary.package_name &&
204 package_json.binary.package_name.indexOf('{node_napi_label}') === -1;