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import async from 'async';
import child from 'child_process';
import fs from 'fs';
import mkdirp from 'mkdirp';
import p from 'path';
/**
* Execute a single command.
*
* @param {String} command: the command to execute
* @param {Object} opts:
* - cwd: base directory where the commands should be executed from
* - quiet: don't display command output if quiet
* - task: Bob task name, used to create output directory
* - type: Bob task type name, used to create output directory
* - dir: report directory where process output will be written into a file
* @param {Function} cb: standard cb(err, result) callback
*/
function exec(command, opts, cb) {
console.log('%s | %s', opts.task.cyan, command);
const cproc = child.exec(command, opts, cb),
wstream = fs.createWriteStream(p.join(opts.dir, opts.type + '.txt'));
cproc.stdout.on('data', (data) => {
if (!opts.quiet) {
process.stdout.write(data);
}
wstream.write(data);
});
cproc.stderr.on('data', (data) => {
if (!opts.quiet) {
process.stderr.write(data);
}
wstream.write(data);
});
}
/**
* Execute multiple commands in series.
*
* @param {Array} commands: an array of commands, each command contains:
* - exec: executable command line, to be executed on shell
* - meta: command metadata, task and type
* @param {Object} opts:
* - cwd: base directory where the commands should be executed from
* - quiet: don't display command output if quiet
* @param {Function} cb: standard cb(err, result) callback
*/
function execSeries(commands, opts, cb) {
function _exec(command, cb) {
const dir = p.join(opts.cwd, '.bob', command.meta.task);
mkdirp.sync(dir);
opts.task = command.meta.task;
opts.type = command.meta.type;
opts.dir = dir;
exec(command.exec, opts, cb);
}
async.eachSeries(commands, _exec, cb);
}
const exports = {
exec: exec,
execSeries: execSeries
};
export {
exports as default
}; |