Created
September 3, 2010 12:27
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var path = require('path'); | |
var fs = require('fs'); | |
var sys = require('sys'); | |
var EventEmitter = require('events').EventEmitter; | |
var copy = function copy(src, dst, callback) { | |
var self = this; | |
self.on('error', function(err) { | |
callback(err); | |
}); | |
self.on('validations', function() { | |
path.exists(src, function(exists) { | |
if(!exists) { | |
self.emit('error', new Error(src + ' does not exists. Nothing to be copied')); | |
return; | |
} | |
fs.stat(src, function(err, stat) { | |
if(stat.isDirectory()) { | |
self.emit('error', new Error(src + ' is a directory. It must be a file')); | |
return; | |
} | |
if(src == dst) { | |
self.emit('error', new Error(src + ' and ' + dst + 'are identical')); | |
return; | |
} | |
//Go! | |
self.emit('open_infd'); | |
}); | |
}); | |
}); | |
self.on('open_infd', function() { | |
fs.open(src, 'r', function(err, infd) { | |
if(err) { | |
self.emit('error', err); | |
return; | |
} | |
self.emit('open_outfd', infd); | |
}); | |
}); | |
self.on('open_outfd', function(infd) { | |
fs.open(dst, 'w', function(err, outfd) { | |
if(err) { | |
self.emit('error', err); | |
return; | |
} | |
self.emit('sendfile', infd, outfd); | |
}); | |
}); | |
self.on('sendfile', function(infd, outfd) { | |
fs.fstat(infd, function(err, stat) { | |
if(err) { | |
self.emit('error', err); | |
return; | |
} | |
fs.sendfile(outfd, infd, 0, stat.size, function() { | |
self.emit('close_fds', infd, outfd); | |
callback(); | |
}); | |
}); | |
}); | |
self.on('close_fds', function(infd, outfd) { | |
fs.close(infd, function(err) { | |
if(err) { | |
self.emit('error', err); | |
} | |
}); | |
fs.close(outfd, function(err) { | |
if(err) { | |
self.emit('error', err); | |
} | |
}); | |
}); | |
//Start here | |
self.emit('validations'); | |
/*fs.open(src, 'r', function(err, infd) { | |
if(err) callback(err); | |
fs.fstat(infd, function(err, stat) { | |
if(err) callback(err); | |
fs.open(dst, 'w', function(err, outfd) { | |
if(err) callback(err); | |
fs.sendfile(outfd, infd, 0, stat.size, function() { | |
fs.close(infd, function(err) { | |
if(err) callback(err); | |
fs.close(outfd, function(err) { | |
if(err) { | |
callback(err); | |
} else { | |
callback(); | |
} | |
}); | |
}); | |
}); | |
}); | |
}); | |
});*/ | |
} | |
sys.inherits(copy, EventEmitter); | |
fs.copy = function(src, dst, callback) { | |
return new copy(src, dst, callback); | |
}; |
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