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/**
* @license Apache-2.0
*
* Copyright (c) 2019 The Stdlib Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* eslint-disable no-underscore-dangle */
'use strict';
// MODULES //
var logger = require( 'debug' );
var hasOwnProp = require( '@stdlib/assert/has-own-property' );
var isString = require( '@stdlib/assert/is-string' ).isPrimitive;
var isBoolean = require( '@stdlib/assert/is-boolean' ).isPrimitive;
var isPlainObject = require( '@stdlib/assert/is-plain-object' );
var isArrayLike = require( '@stdlib/assert/is-array-like-object' );
var isRegExp = require( '@stdlib/assert/is-regexp' );
var defineProperty = require( '@stdlib/utils/define-property' );
var contains = require( './../contains.js' );
var log = require( './../log.js' );
// VARIABLES //
var debug = logger( 'repl:command:load_workspace' );
// MAIN //
/**
* Returns a callback to be invoked upon calling the `loadWorkspace` command.
*
* @private
* @param {REPL} repl - REPL instance
* @returns {Function} callback
*/
function command( repl ) {
return onCommand;
/**
* Loads variables from a specified workspace into the current workspace.
*
* @private
* @param {string} name - workspace name
* @param {Options} [options] - function options
* @param {(RegExp|ArrayLikeObject)} [options.include] - name inclusion filter
* @param {(RegExp|ArrayLikeObject)} [options.exclude] - name exclusion filter
* @param {boolean} [options.override=true] - boolean indicating whether to override existing workspace variables
* @returns {void}
*/
function onCommand( name, options ) {
var isArrInc;
var isArrExc;
var opts;
var err;
var cnt;
var ws;
var v;
var i;
if ( !isString( name ) ) {
err = new TypeError( 'invalid argument. First argument must be a string. Value: `' + name + '`.' );
debug( 'Error: %s', err.message );
repl._ostream.write( 'Error: '+err.message+'\n' );
return;
}
opts = {
'override': true
};
if ( arguments.length > 1 ) {
if ( !isPlainObject( options ) ) {
err = new TypeError( 'invalid argument. `options` argument must be an object. Value: `' + name + '`.' );
debug( 'Error: %s', err.message );
repl._ostream.write( 'Error: '+err.message+'\n' );
return;
}
if ( hasOwnProp( options, 'include' ) ) {
isArrInc = isArrayLike( options.include );
if ( isArrInc === false && !isRegExp( options.include ) ) {
err = new TypeError( 'invalid option. `include` option must be a regular expression or an array-like object. Option: `' + options.include + '`.' );
debug( 'Error: %s', err.message );
repl._ostream.write( 'Error: '+err.message+'\n' );
return;
}
opts.include = options.include;
}
if ( hasOwnProp( options, 'exclude' ) ) {
isArrExc = isArrayLike( options.exclude );
if ( isArrExc === false && !isRegExp( options.exclude ) ) {
err = new TypeError( 'invalid option. `exclude` option must be a regular expression or an array-like object. Option: `' + options.exclude + '`.' );
debug( 'Error: %s', err.message );
repl._ostream.write( 'Error: '+err.message+'\n' );
return;
}
opts.exclude = options.exclude;
}
if ( hasOwnProp( options, 'override' ) ) {
if ( !isBoolean( options.override ) ) {
err = new TypeError( 'invalid option. `override` option must be a boolean. Option: `' + options.override + '`.' );
debug( 'Error: %s', err.message );
repl._ostream.write( 'Error: '+err.message+'\n' );
return;
}
opts.override = options.override;
}
}
if ( name === repl._currentWorkspace ) {
log( repl, 'Already in \''+name+'\' workspace.' );
debug( 'Already in \'%s\' workspace.', name );
return;
}
if ( !hasOwnProp( repl._workspaces, name ) ) {
err = new Error( 'invalid argument. Unrecognized workspace name. Value: `' + name + '`.' );
debug( 'Error: %s', err.message );
repl._ostream.write( 'Error: '+err.message+'\n' );
return;
}
ws = repl._workspaces[ name ];
// Note: the internal branches are not the most performant implementation, but the implementation is straightforward and presumably "good enough"...
cnt = 0;
for ( i = 0; i < ws.length; i += 2 ) {
v = ws[ i ];
if ( opts.include ) {
if ( isArrInc && !contains( opts.include, v ) ) {
continue;
}
if ( !opts.include.test( v ) ) {
continue;
}
}
if ( opts.exclude ) {
if ( isArrExc && contains( opts.exclude, v ) ) {
continue;
}
if ( opts.exclude.test( v ) ) {
continue;
}
}
if ( hasOwnProp( repl._context, v ) && opts.override === false ) {
continue;
}
// If we've made it this far, the variable should have passed all filters...
cnt += 1;
defineProperty( repl._context, v, ws[ i+1] );
}
log( repl, cnt.toString()+' variable(s) loaded from \''+name+'\' workspace.' );
debug( '%d variable(s) loaded from \'%s\' workspace.', cnt, name );
}
}
// EXPORTS //
module.exports = command;
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