3 # whatever-dl, a script to download online (web-based) videos.
5 # Copyright Michael Orlitzky
7 # http://michael.orlitzky.com/
9 # This program is free software: you can redistribute it and/or modify
10 # it under the terms of the GNU General Public License as published by
11 # the Free Software Foundation, either version 3 of the License, or
12 # (at your option) any later version.
14 # This program is distributed in the hope that it will be useful,
15 # but WITHOUT ANY WARRANTY; without even the implied warranty of
16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 # GNU General Public License for more details.
19 # http://www.fsf.org/licensing/licenses/gpl.html
22 # We need Pathname to get the real filesystem path
23 # of this script (and not, for example, the path of
24 # a symlink which points to it.
27 # This bit of magic adds the parent directory (the
28 # project root) to the list of ruby load paths.
29 # Thus, our require statements will work regardless of
30 # how or from where the script was run.
31 executable
= Pathname
.new(__FILE__
).realpath
.to_s
32 $
: << File
.dirname(executable
) +
'/../'
34 # We require the UriUtilities class to handle
35 # the download of the video URL.
36 require 'src/uri_utilities'
39 # All of the website classes are located in one
40 # directory, so we can 'require' them automatically.
41 Dir
.glob('src/websites/*.rb').each
do |r
|
49 EXIT_COULDNT_GET_VIDEO_URL
= 3
50 EXIT_OUTPUT_FILE_ALREADY_EXISTS
= 4
51 EXIT_ERROR_READING_FROM_VIDEO_URL
= 5
52 EXIT_CONNECTION_REFUSED
= 6
54 EXIT_ACCESS_DENIED
= 8
56 # Only actually do something if this script was called
57 # directly (i.e. not from the tests).
58 if (__FILE__
== $0) then
59 if (ARGV.length
< 1) then
60 # If the user didn't give us a URL, yell
62 puts
'Usage: whatever-dl <url>'
63 Kernel
.exit(EXIT_NO_URL
)
67 site
= Website
.create(ARGV[0])
71 exit(EXIT_INVALID_URL
)
74 video_url
= site
.get_video_url()
77 puts
'Error retrieving video URL.'
78 exit(EXIT_COULDNT_GET_VIDEO_URL
)
81 video_uri
= URI
.parse(video_url
)
82 uu
= UriUtilities
.new()
84 if File
.exists
?(site
.get_video_filename())
85 puts
"Error: output file already exists. Please remove #{site.get_video_filename()}, and try again."
86 Kernel
.exit(EXIT_OUTPUT_FILE_ALREADY_EXISTS
)
90 # Attempt to download the file, and rescue and report
91 # any (predictable) exceptions.
93 puts
"Fetching #{video_url}"
94 puts
"Saving as #{site.get_video_filename()}."
96 uu
.download_with_progress_bar(video_uri
, site
.get_video_filename())
97 rescue Errno
::ECONNREFUSED => e
98 puts
'The connection to the server (to download the video file) was refused. Check your connection, and try again later.'
99 Kernel
.exit(EXIT_CONNECTION_REFUSED
)
100 rescue Errno
::EACCES => e
101 puts
"Access denied. Check that you have write permission to the output file/directory. Details: #{e.message}."
102 rescue OpenURI
::HTTPError => e
103 puts
"An HTTP error occurred while downloading the video file: #{e.message}."
104 Kernel
.exit(EXIT_HTTP_ERROR
)
107 # Write an empty line at the end for aesthetic reasons.
110 Kernel
.exit(EXIT_SUCCESS
)