lyrics.py - lyrics - Print lyrics of songs given the artist and title
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       lyrics.py
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            1 #!/usr/pkg/bin/python3.7
            2 
            3 #
            4 # Copyright (c) 2018-2019 Leonardo Taccari
            5 # All rights reserved.
            6 #
            7 # Redistribution and use in source and binary forms, with or without
            8 # modification, are permitted provided that the following conditions
            9 # are met:
           10 #
           11 # 1. Redistributions of source code must retain the above copyright
           12 #    notice, this list of conditions and the following disclaimer.
           13 # 2. Redistributions in binary form must reproduce the above copyright
           14 #    notice, this list of conditions and the following disclaimer in the
           15 #    documentation and/or other materials provided with the distribution.
           16 #
           17 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
           18 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
           19 # TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
           20 # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS
           21 # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
           22 # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
           23 # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
           24 # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
           25 # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
           26 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
           27 # POSSIBILITY OF SUCH DAMAGE.
           28 #
           29 
           30 
           31 """
           32 fetch and print lyrics
           33 
           34 lyrics is a Python script/module to print lyrics of songs given the artist
           35 and title of the song
           36 """
           37 
           38 
           39 from pydoc import pager
           40 from urllib import request
           41 from bs4 import BeautifulSoup, SoupStrainer
           42 
           43 
           44 LYRICS_USER_AGENT = 'Mozilla/5.0 (Windows NT 6.1; rv:60.0) Gecko/20100101 Firefox/60.0'
           45 
           46 
           47 class LyricsFetcher:
           48     def __init__(self, artist, title):
           49         self.artist = artist
           50         self.title = title
           51 
           52     def _url(self):
           53         pass
           54 
           55     def lyrics(self):
           56         pass
           57 
           58 
           59 class Genius(LyricsFetcher):
           60     def _url(self):
           61         artist = self.artist.replace("'", "").replace(' ', '-').replace('&', 'and')
           62         title = self.title.replace("'", "").replace(' ', '-').replace(',', '').replace('(', '').replace(')', '')
           63         return 'https://genius.com/{}-{}-lyrics'.format(artist, title)
           64 
           65     def lyrics(self):
           66         try:
           67             req = request.Request(self._url())
           68             req.add_header('User-Agent', LYRICS_USER_AGENT)
           69             with request.urlopen(req) as r:
           70                 t = BeautifulSoup(r, 'html.parser',
           71                                   parse_only=SoupStrainer(class_='lyrics'))
           72                 return t.text.strip()
           73         except Exception:
           74             raise Exception("Could not fetch lyric")
           75 
           76 
           77 if __name__ == '__main__':
           78     import sys
           79 
           80     def usage():
           81         print('usage: {} artist title'.format(sys.argv[0]))
           82         exit(1)
           83 
           84     if len(sys.argv) != 3:
           85         usage()
           86 
           87     artist, title = sys.argv[1:]
           88 
           89     try:
           90         lf = Genius(artist, title)
           91         lyric = lf.lyrics()
           92         pager(lyric)
           93     except Exception:
           94         exit(1)