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stdlib-bot committed Jul 12, 2021
1 parent a95548c commit 92ea84c
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318 changes: 135 additions & 183 deletions bin/cli
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// MODULES //

var fs = require( 'fs' );
var path = require( 'path' );
var parseArgs = require( 'minimist' );
var resolve = require( 'path' ).resolve;
var readFileSync = require( '@stdlib/fs-read-file' ).sync;
var CLI = require( '@stdlib/cli-ctor' );
var ENV = require( '@stdlib/process-env' );
var cwd = require( '@stdlib/process-cwd' );
var stdin = require( '@stdlib/process-read-stdin' );
var readFileSync = require( '@stdlib/fs-read-file' ).sync;
var pkg = require( './../package.json' );
var opts = require( './opts.json' );
var httpServer = require( './../lib' );


// FUNCTIONS //

/**
* Performs initialization tasks.
*
* @private
* @example
* init();
*/
function init() {
// Set the process title to allow the process to be more easily identified:
process.title = pkg.name;
process.stdout.on( 'error', process.exit );
}
// MAIN //

/**
* Prints usage information.
* Main execution sequence.
*
* @private
* @example
* help();
* // => '...'
* @returns {void}
*/
function help() {
var fpath = path.join( __dirname, 'usage.txt' );
fs.createReadStream( fpath )
.pipe( process.stderr )
.on( 'close', onClose );

function onClose() {
process.exit( 0 );
function main() {
var fpath;
var flags;
var file;
var opts;
var cli;
var err;
var v;

// 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;
}
}

/**
* Prints the package version.
*
* @private
* @example
* version();
* // => '#.#.#'
*/
function version() {
var msg = pkg.version.toString()+'\n';
process.stdout.write( msg, 'utf8' );
process.exit( 0 );
}

/**
* Writes an error message to `stderr` and then exits.
*
* @private
* @param {string} msg - error message
*/
function exit( msg ) {
process.stderr.write( msg+'\n', 'utf8' );
process.exit( 1 );
}


// VARIABLES //

var fpath;
var file;
var args;
var err;
var v;


// MAIN //

init();

// Parse command-line arguments:
args = parseArgs( process.argv.slice( 2 ), opts );

if ( args.help ) {
return help();
}
if ( args.version ) {
return version();
}
opts = {};

opts = {};

v = args.port || ENV.PORT;
if ( v ) {
opts.port = parseInt( v, 10 );
}
v = args.maxport || ENV.MAXPORT;
if ( v ) {
opts.maxport = parseInt( v, 10 );
}
v = args.hostname || ENV.HOSTNAME;
if ( v ) {
opts.hostname = v;
}
v = args.address || ENV.ADDRESS;
if ( v ) {
opts.address = v;
}
if ( args.open ) {
opts.open = true;
}

// Load an HTML file...
if ( args.html ) {
fpath = path.resolve( cwd(), args.html );
file = readFileSync( fpath );
if ( file instanceof Error ) {
return exit( file.message );
v = flags.port || ENV.PORT;
if ( v ) {
opts.port = parseInt( v, 10 );
}
opts.html = file;
}
// Load a JavaScript file...
if ( args.javascript ) {
fpath = path.resolve( cwd(), args.javascript );
file = readFileSync( fpath );
if ( file instanceof Error ) {
return exit( file.message );
v = flags.maxport || ENV.MAXPORT;
if ( v ) {
opts.maxport = parseInt( v, 10 );
}
opts.javascript = file;
}
// Determine if we need to read data from `stdin`...
if ( args.stdin ) {
if ( args.stdin === 'html' ) {
return stdin( html );
} else if (
args.stdin === 'javascript' ||
args.stdin === 'js'
) {
return stdin( javascript );
v = flags.hostname || ENV.HOSTNAME;
if ( v ) {
opts.hostname = v;
}
err = new Error( 'invalid flag. Unrecognized/unsupported `stdin` type: '+args.stdin+'.' );
return exit( err.message );
}
// If the `stdin` flag has not been set and we're receiving data (i.e., not running in a terminal context), assume a content type based on either an `--html` or `--javascript` flag being set...
else if ( !process.stdin.isTTY ) {
if ( args.html ) {
return stdin( javascript );
} else if ( args.javascript ) {
return stdin( html );
v = flags.address || ENV.ADDRESS;
if ( v ) {
opts.address = v;
}
if ( flags.open ) {
opts.open = true;
}
// Neither `--html` or `--javascript` was set...
err = new Error( 'invalid invocation. Must specify a `stdin` content type.' );
return exit( err.message );
}

return process.nextTick( next );

/**
* Callback invoked after attempting to read HTML from `stdin`.
*
* @private
* @param {(Error|null)} error - error object
* @param {Buffer} data - `stdin` data
*/
function html( error, data ) {
if ( error ) {
return exit( error.message );
// Load an HTML file...
if ( flags.html ) {
fpath = resolve( cwd(), flags.html );
file = readFileSync( fpath );
if ( file instanceof Error ) {
return cli.error( file );
}
opts.html = file;
}
if ( data.toString() === '' ) {
error = new Error( 'no input data. Provide either a path to an HTML file or provide HTML via `stdin`.' );
return exit( error.message );
// Load a JavaScript file...
if ( flags.javascript ) {
fpath = resolve( cwd(), flags.javascript );
file = readFileSync( fpath );
if ( file instanceof Error ) {
return cli.error( file );
}
opts.javascript = file;
}
// Determine if we need to read data from `stdin`...
if ( flags.stdin ) {
if ( flags.stdin === 'html' ) {
return stdin( html );
}
if (
flags.stdin === 'javascript' ||
flags.stdin === 'js'
) {
return stdin( javascript );
}
err = new Error( 'invalid flag. Unrecognized/unsupported `stdin` type: '+flags.stdin+'.' );
return cli.error( err );
}
// If the `stdin` flag has not been set and we're receiving data (i.e., not running in a terminal context), assume a content type based on either an `--html` or `--javascript` flag being set...
if ( !process.stdin.isTTY ) {
if ( flags.html ) {
return stdin( javascript );
}
if ( flags.javascript ) {
return stdin( html );
}
// Neither `--html` or `--javascript` was set...
err = new Error( 'invalid invocation. Must specify a `stdin` content type.' );
return cli.error( err );
}
opts.html = data;
next();
}

/**
* Callback invoked after attempting to read JavaScript from `stdin`.
*
* @private
* @param {(Error|null)} error - error object
* @param {Buffer} data - `stdin` data
*/
function javascript( error, data ) {
if ( error ) {
return exit( error.message );
return process.nextTick( next );

/**
* Callback invoked after attempting to read HTML from `stdin`.
*
* @private
* @param {(Error|null)} error - error object
* @param {Buffer} data - `stdin` data
* @returns {void}
*/
function html( error, data ) {
if ( error ) {
return cli.error( error );
}
if ( data.toString() === '' ) {
error = new Error( 'no input data. Provide either a path to an HTML file or provide HTML via `stdin`.' );
return cli.error( error );
}
opts.html = data;
next();
}
if ( data.toString() === '' ) {
error = new Error( 'no input data. Provide either a path to a JavaScript file or provide JavaScript via `stdin`.' );
return exit( error.message );

/**
* Callback invoked after attempting to read JavaScript from `stdin`.
*
* @private
* @param {(Error|null)} error - error object
* @param {Buffer} data - `stdin` data
* @returns {void}
*/
function javascript( error, data ) {
if ( error ) {
return cli.error( error );
}
if ( data.toString() === '' ) {
error = new Error( 'no input data. Provide either a path to a JavaScript file or provide JavaScript via `stdin`.' );
return cli.error( error );
}
opts.javascript = data;
next();
}
opts.javascript = data;
next();
}

/**
* Callback invoked once ready to run an HTTP server.
*
* @private
*/
function next() {
httpServer( opts );
/**
* Callback invoked once ready to run an HTTP server.
*
* @private
*/
function next() {
httpServer( opts );
}
}

main();
0 bin/usage.txt → docs/usage.txt
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0 bin/opts.json → etc/cli_opts.json
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7 changes: 5 additions & 2 deletions package.json
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Original file line number Diff line number Diff line change
Expand Up @@ -46,6 +46,7 @@
"@stdlib/assert-is-string": "^0.0.x",
"@stdlib/buffer-ctor": "^0.0.x",
"@stdlib/buffer-from-string": "^0.0.x",
"@stdlib/cli-ctor": "^0.0.x",
"@stdlib/fs-read-file": "^0.0.x",
"@stdlib/net-http-server": "^0.0.x",
"@stdlib/process-cwd": "^0.0.x",
Expand All @@ -55,10 +56,12 @@
"@stdlib/utils-next-tick": "^0.0.x",
"@stdlib/utils-noop": "^0.0.x",
"@stdlib/utils-open-url": "^0.0.x",
"debug": "^2.6.9",
"minimist": "^1.2.0"
"debug": "^2.6.9"
},
"devDependencies": {
"@stdlib/assert-is-browser": "^0.0.x",
"@stdlib/assert-is-windows": "^0.0.x",
"@stdlib/process-exec-path": "^0.0.x",
"proxyquire": "^2.0.0",
"tape": "git+https://github.com/kgryte/tape.git#fix/globby",
"istanbul": "^0.4.1",
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