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74 lines
2.7 KiB
74 lines
2.7 KiB
'use strict';
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.default = varValueConvert;
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var _isWindows = require('./is-windows');
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var _isWindows2 = _interopRequireDefault(_isWindows);
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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var pathLikeEnvVarWhitelist = new Set(['PATH', 'NODE_PATH']);
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/**
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* This will transform UNIX-style list values to Windows-style.
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* For example, the value of the $PATH variable "/usr/bin:/usr/local/bin:."
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* will become "/usr/bin;/usr/local/bin;." on Windows.
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* @param {String} varValue Original value of the env variable
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* @param {String} varName Original name of the env variable
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* @returns {String} Converted value
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*/
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function replaceListDelimiters(varValue) {
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var varName = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : '';
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var targetSeparator = (0, _isWindows2.default)() ? ';' : ':';
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if (!pathLikeEnvVarWhitelist.has(varName)) {
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return varValue;
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}
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return varValue.replace(/(\\*):/g, function (match, backslashes) {
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if (backslashes.length % 2) {
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// Odd number of backslashes preceding it means it's escaped,
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// remove 1 backslash and return the rest as-is
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return match.substr(1);
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}
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return backslashes + targetSeparator;
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});
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}
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/**
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* This will attempt to resolve the value of any env variables that are inside
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* this string. For example, it will transform this:
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* cross-env FOO=$NODE_ENV BAR=\\$NODE_ENV echo $FOO $BAR
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* Into this:
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* FOO=development BAR=$NODE_ENV echo $FOO
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* (Or whatever value the variable NODE_ENV has)
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* Note that this function is only called with the right-side portion of the
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* env var assignment, so in that example, this function would transform
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* the string "$NODE_ENV" into "development"
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* @param {String} varValue Original value of the env variable
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* @returns {String} Converted value
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*/
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function resolveEnvVars(varValue) {
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var envUnixRegex = /(\\*)(\$(\w+)|\${(\w+)})/g; // $my_var or ${my_var} or \$my_var
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return varValue.replace(envUnixRegex, function (_, escapeChars, varNameWithDollarSign, varName, altVarName) {
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// do not replace things preceded by a odd number of \
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if (escapeChars.length % 2 === 1) {
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return varNameWithDollarSign;
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}
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return escapeChars.substr(0, escapeChars.length / 2) + (process.env[varName || altVarName] || '');
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});
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}
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/**
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* Converts an environment variable value to be appropriate for the current OS.
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* @param {String} originalValue Original value of the env variable
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* @param {String} originalName Original name of the env variable
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* @returns {String} Converted value
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*/
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function varValueConvert(originalValue, originalName) {
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return resolveEnvVars(replaceListDelimiters(originalValue, originalName));
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}
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