time-to-botec/squiggle/node_modules/@stdlib/string/from-code-point/bin/cli

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#!/usr/bin/env node
/**
* @license Apache-2.0
*
* Copyright (c) 2018 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.
*/
'use strict';
// MODULES //
var resolve = require( 'path' ).resolve;
var readFileSync = require( '@stdlib/fs/read-file' ).sync;
var CLI = require( '@stdlib/cli/ctor' );
var stdin = require( '@stdlib/process/read-stdin' );
var stdinStream = require( '@stdlib/streams/node/stdin' );
var RE_EOL = require( '@stdlib/regexp/eol' ).REGEXP;
var reFromString = require( '@stdlib/utils/regexp-from-string' );
var fromCodePoint = require( './../lib' );
// MAIN //
/**
* Main execution sequence.
*
* @private
* @returns {void}
*/
function main() {
var flags;
var args;
var cli;
var i;
// Create a command-line interface:
cli = new CLI({
'pkg': require( './../package.json' ),
'options': require( './../etc/cli_opts.json' ),
'help': readFileSync( resolve( __dirname, '..', 'docs', 'usage.txt' ), {
'encoding': 'utf8'
})
});
// Get any provided command-line options:
flags = cli.flags();
if ( flags.help || flags.version ) {
return;
}
// Get any provided command-line arguments:
args = cli.args();
// Check if we are receiving data from `stdin`...
if ( stdinStream.isTTY ) {
for ( i = 0; i < args.length; i++ ) {
args[ i ] = parseInt( args[ i ], 10 );
}
return console.log( fromCodePoint( args ) ); // eslint-disable-line no-console
}
return stdin( onRead );
/**
* Callback invoked upon reading from `stdin`.
*
* @private
* @param {(Error|null)} error - error object
* @param {Buffer} data - data
* @returns {void}
*/
function onRead( error, data ) {
var flags;
var sep;
if ( error ) {
return cli.error( error );
}
flags = cli.flags();
if ( flags.split ) {
sep = reFromString( flags.split );
if ( sep === null ) {
// If the previous command "failed", we were not provided a regular expression:
sep = flags.split;
}
} else {
sep = RE_EOL;
}
data = data.toString().split( sep );
// Remove any trailing separators (e.g., trailing newline)...
if ( data[ data.length-1 ] === '' ) {
data.pop();
}
// Cast all values to integers...
for ( i = 0; i < data.length; i++ ) {
data[ i ] = parseInt( data[ i ], 10 );
}
console.log( fromCodePoint( data ) ); // eslint-disable-line no-console
}
}
main();