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| Current File : //usr/lib/nodejs/fstream/lib/abstract.js |
// the parent class for all fstreams.
module.exports = Abstract
var Stream = require('stream').Stream
var inherits = require('inherits')
function Abstract () {
Stream.call(this)
}
inherits(Abstract, Stream)
Abstract.prototype.on = function (ev, fn) {
if (ev === 'ready' && this.ready) {
process.nextTick(fn.bind(this))
} else {
Stream.prototype.on.call(this, ev, fn)
}
return this
}
Abstract.prototype.abort = function () {
this._aborted = true
this.emit('abort')
}
Abstract.prototype.destroy = function () {}
Abstract.prototype.warn = function (msg, code) {
var self = this
var er = decorate(msg, code, self)
if (!self.listeners('warn')) {
console.error('%s %s\n' +
'path = %s\n' +
'syscall = %s\n' +
'fstream_type = %s\n' +
'fstream_path = %s\n' +
'fstream_unc_path = %s\n' +
'fstream_class = %s\n' +
'fstream_stack =\n%s\n',
code || 'UNKNOWN',
er.stack,
er.path,
er.syscall,
er.fstream_type,
er.fstream_path,
er.fstream_unc_path,
er.fstream_class,
er.fstream_stack.join('\n'))
} else {
self.emit('warn', er)
}
}
Abstract.prototype.info = function (msg, code) {
this.emit('info', msg, code)
}
Abstract.prototype.error = function (msg, code, th) {
var er = decorate(msg, code, this)
if (th) throw er
else this.emit('error', er)
}
function decorate (er, code, self) {
if (!(er instanceof Error)) er = new Error(er)
er.code = er.code || code
er.path = er.path || self.path
er.fstream_type = er.fstream_type || self.type
er.fstream_path = er.fstream_path || self.path
if (self._path !== self.path) {
er.fstream_unc_path = er.fstream_unc_path || self._path
}
if (self.linkpath) {
er.fstream_linkpath = er.fstream_linkpath || self.linkpath
}
er.fstream_class = er.fstream_class || self.constructor.name
er.fstream_stack = er.fstream_stack ||
new Error().stack.split(/\n/).slice(3).map(function (s) {
return s.replace(/^ {4}at /, '')
})
return er
}
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