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4chan-downloader
Advanced tools
Readme
Downloads all files in 4chan threads.
npm install -g 4chan-downloader
Help output:
Usage: 4chan [options] <url> [<dir>]
Examples:
4chan <url> Download all files in a thread into {cwd}.
4chan <url> foo Download all files in a thread into {cwd}/foo.
4chan <url> foo/bar Download all files in a thread into {cwd}/foo/bar.
4chan -w <url> Download all and watch for new files.
4chan -w -i 20 <url> Download all and check for new files every 20 seconds.
4chan -f gif,webm <url> Download all gif and webm files.
4chan -s 200x100 <url> Download all files bigger than 200x100 pixels.
4chan -s 100 <url> Download all files bigger than 100x100 pixels.
Options:
-w, --watch Watch for new files.
-i, --interval Watching interval in seconds. [default: 10]
-f, --filter Filter specific file types. [default: "jpg,gif,png,webm"]
-o, --override Override existing files.
-n, --names Save with original file names.
-s, --size Smallest files to download. [default: "100x100"]
-t, --threads Limit of simultaneous downloads. [default: 1]
-v, --version Show version.
-h, --help Show help.
var FortuneDownloader = require('4chan-downloader');
var thread = new FortuneDownloader('http://boards...')
.threads(4)
.watch()
.downloadTo('foo/bar');
// ...
thread.stop();
Consturctor. new
keyword is optional. All methods are chaining.
Set number of downloading threads.
Make instance watch for new files.
interval Integer
Watching interval in millisecods. Default: 10000
Custom function that filters out specific files. Function returns true
when the file should be downloaded and false
otherwise.
Function arguments:
Object
File description object:
{
url: 'http://i.4cdn.org/g/1407348528901.jpg',
prettysize: '650 KB',
width: 1920,
height: 1080,
name: 'Original file name.jpg',
idname: '1407348528901.jpg',
type: 'jpg',
size: 0, // set when file stars downloading
completed: 0, // updated during downloading
progress: 0 // updated during downloading
}
Custom function that returns the name to be used when saving files.
Function arguments:
Object
File description object:
{
url: 'http://i.4cdn.org/g/1407348528901.jpg',
prettysize: '650 KB',
width: 1920,
height: 1080,
name: 'Original file name.jpg',
idname: '1407348528901.jpg',
type: 'jpg',
size: 0, // set when file stars downloading
completed: 0, // updated during downloading
progress: 0 // updated during downloading
}
Set whether instance should override already existing files. Default behavior is false
.
Boolean
Where to save files. By default files are saved into current working directory.
String
Starts downloading.
Shorthand for:
FortuneDownloader(url)
.destination('foo/bar')
.download();
Clears current download queue, and cancels watching when in progress.
It does not cancel ongoing download streams.
After #stop()
has been called and ongoing downloads finished, end
event will be fired. If there were no ongoing downloads, end
will be fired immediately.
Type String
. Thread URL.
Type Array
. Array of files (file descriptor objects) to be downloaded. File is removed from here right before file:start
event.
Type Array
. Array of downloaded file URLs. When watching is active, any subsequent download will filter out files in this array.
Type Integer
. Number of currently active download threads in progress.
FortuneDownloader
instance is an event emitter.
Triggered when page has been parsed, and #queue
array has been populated with files soon to be downloaded.
Triggered when download canceling error has happened. When this event fires, end
event won't.
Callback arguments:
Error
Triggered when download instance has finished downloading all files, and watching is not enabled.
Also fires when #stop()
is called and all ongoing downloads finish.
Triggered when file starts downloading.
Callback arguments:
Object
File descriptor object:
{
url: 'http://i.4cdn.org/g/1407348528901.jpg',
prettysize: '650 KB',
width: 1920,
height: 1080,
name: 'Original file name.jpg',
idname: '1407348528901.jpg',
type: 'jpg',
size: 665600, // available now
completed: 0,
progress: 0
}
Triggered when chunk of a file has been received.
Callback arguments:
Buffer
Object
File descriptor object:
{
url: 'http://i.4cdn.org/g/1407348528901.jpg',
prettysize: '650 KB',
width: 1920,
height: 1080,
name: 'Original file name.jpg',
idname: '1407348528901.jpg',
type: 'jpg',
size: 665600,
completed: 40253, // sum of all chunks till now
progress: 0.06139871873093349603416717510677 // completed / size
}
Same as chunk, but without the chunk argument:
Object
File descriptor object:
{
url: 'http://i.4cdn.org/g/1407348528901.jpg',
prettysize: '650 KB',
width: 1920,
height: 1080,
name: 'Original file name.jpg',
idname: '1407348528901.jpg',
type: 'jpg',
size: 665600,
completed: 40253, // sum of all chunks till now
progress: 0.06139871873093349603416717510677 // completed / size
}
Triggered when file downloading error has happened. These errors don't stop the downloading process.
Callback arguments:
Error
Object
File descriptor object.Triggered when file has finished with downloading.
Callback arguments:
Object
File descriptor object.MIT
FAQs
Downloads all files in 4chan threads.
We found that 4chan-downloader demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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