Extracting the name of a track from the /r/listenToThis subreddit for an IFTTT automation script

Question

Extracting the name of a track from the /r/listenToThis subreddit for an IFTTT automation script

I have a list of songs gathered from this subreddit, presented in the following format:

[
  "Lophelia -- MYTCH [Acoustic Prog-Rock/Jazz] (2019)",
  "Julia Jacklin - Pressure to Party [Rock] (2019)",
  "The Homeless Gospel Choir - I'm Going Home [Folk-Punk] (2019) cover of Pat the Bunny | A Fistful of Vinyl",
  "Lea Salonga and Simon Bowman - The last night of the world [musical] (1990)",
  "$uicideboy$ - Death",
  "SNFU -- Joni Mitchell Tapes [Punk/Alternative] (1993)",
  "Blab - afdosafhsd (2000)",
  "Something strange and badly formatted without any artist [Classical]",
  "シロとクロ「ミッドナイトにグッドナイト」(Goodnight to Midnight - Shirotokuro) - (Official Music Video) [Indie/Alternative]",
  "Victor Love - Irrationality (feat. Spiritual Front) [Industrial Rock/Cyberpunk]"
  ...
]

I'm attempting to extract the title and artist information from each entry using regex, but I'm encountering difficulties.

My initial approach of splitting by "-" only provides the artist, which is cumbersome to deal with.

I also tried using regex, but I can't seem to get it right. Here's what I had for the artist:

/(?<= -{1,2} )[\S ]*(?= \[|\( )/i

and for the title: /[\S ]*(?= -{1,2} )/i.

Each entry consists of a song title with the artist potentially preceding it with one or two dashes. Genres may be enclosed in square brackets and release dates in parentheses. While I don't expect perfect results, I prefer undefined for the artist if parsing is unsuccessful for unusual formats.

For example:

[
  { title: "MYTCH", artist: "Lophelia" },
  { title: "Pressure to Party", artist: "Julia Jacklin" },
  { title: "I'm Going Home", artist: "The Homeless Gospel Choir" },
  { title: "The last night of the world", artist: "Lea Salonga and Simon Bowman" },
  { title: "Death", artist: "$uicideboy$" },
  { title: "Joni Mitchell Tapes", artist: "SNFU" },
  { title: "afdosafhsd", artist: "Blab" },
  { title: "Something strange and badly formatted without any artist" },
  { title: "Goodnight to Midnight", artist: "Shirotokuro" }, // AI might be needed for this
  { title: "Irrationality", artist: "Victor Love" }
]

javascript string typescript parsing ifttt

Answer 1

Answer №1

To extract the title and artist information from your post, you can utilize the following regular expression:

^([^-[\]()\n]+)-* *([^[\]()\n]*)

Check out the Regex Demo here (displayed in PCRE format for better group color visual presentation, but it's compatible with Javascript as well)

For demonstration, here is a snippet of JavaScript code:

const songs = ["Lophelia -- MYTCH [Acoustic Prog-Rock/Jazz] (2019)",
"Julia Jacklin - Pressure to Party [Rock] (2019)",
"The Homeless Gospel Choir - I'm Going Home [Folk-Punk] (2019) cover of Pat the Bunny | A Fistful of Vinyl",
"Lea Salonga and Simon Bowman - The last night of the world [musical] (1990)",
"Lophelia -- MYTCH [Acoustic Prog-Rock/Jazz]",
"Death - $uicideboy$",
"SNFU -- Joni Mitchell Tapes [Punk/Alternative] (1993)",
"Title - Aritst (2000)",
"Something strange and badly formatted without any artist [Classical]"]

songs.forEach(song => {
  let matches = /^([^-[\]()\n]+)-* *([^[\]()\n]*)/.exec(song);
  console.log("Title: " + matches[1] + ", Artist: " + matches[2]);
})

Answer 2

To extract the title and artist information from your post, you can utilize the following regular expression:

^([^-[\]()\n]+)-* *([^[\]()\n]*)

Check out the Regex Demo here (displayed in PCRE format for better group color visual presentation, but it's compatible with Javascript as well)

For demonstration, here is a snippet of JavaScript code:

const songs = ["Lophelia -- MYTCH [Acoustic Prog-Rock/Jazz] (2019)",
"Julia Jacklin - Pressure to Party [Rock] (2019)",
"The Homeless Gospel Choir - I'm Going Home [Folk-Punk] (2019) cover of Pat the Bunny | A Fistful of Vinyl",
"Lea Salonga and Simon Bowman - The last night of the world [musical] (1990)",
"Lophelia -- MYTCH [Acoustic Prog-Rock/Jazz]",
"Death - $uicideboy$",
"SNFU -- Joni Mitchell Tapes [Punk/Alternative] (1993)",
"Title - Aritst (2000)",
"Something strange and badly formatted without any artist [Classical]"]

songs.forEach(song => {
  let matches = /^([^-[\]()\n]+)-* *([^[\]()\n]*)/.exec(song);
  console.log("Title: " + matches[1] + ", Artist: " + matches[2]);
})

Answer 3

Answer №2

To achieve a similar result, you can follow this code snippet:

const tracks = [
  "Lophelia -- MYTCH [Acoustic Prog-Rock/Jazz] (2019)",
  "Julia Jacklin - Pressure to Party [Rock] (2019)",
  "The Homeless Gospel Choir - I'm Going Home [Folk-Punk] (2019) cover of Pat the Bunny | A Fistful of Vinyl",
  "Lea Salonga and Simon Bowman - The last night of the world [musical] (1990)",
  "Lophelia -- MYTCH [Acoustic Prog-Rock/Jazz]",
  "Death - $uicideboy$",
  "SNFU -- Joni Mitchell Tapes [Punk/Alternative] (1993)",
  "Title - Aritst (2000)",
  "Something strange and badly formatted without any artist [Classical]",
];

const regex = /\s*((\[[^\]]+\])|(\(\d+\))).*$/;

const info = tracks.map(track => {
  const split = track.split(/\s+\-+\s+/);
  let title = split[0];
  let artist = split[1];
  if (split.length >= 2) {
    artist = artist.replace(regex, '');
  } else {
    title = title.replace(regex, '');
  }
  return {
    title,
    artist
  }
});
console.log(info);

Answer 4

To achieve a similar result, you can follow this code snippet:

const tracks = [
  "Lophelia -- MYTCH [Acoustic Prog-Rock/Jazz] (2019)",
  "Julia Jacklin - Pressure to Party [Rock] (2019)",
  "The Homeless Gospel Choir - I'm Going Home [Folk-Punk] (2019) cover of Pat the Bunny | A Fistful of Vinyl",
  "Lea Salonga and Simon Bowman - The last night of the world [musical] (1990)",
  "Lophelia -- MYTCH [Acoustic Prog-Rock/Jazz]",
  "Death - $uicideboy$",
  "SNFU -- Joni Mitchell Tapes [Punk/Alternative] (1993)",
  "Title - Aritst (2000)",
  "Something strange and badly formatted without any artist [Classical]",
];

const regex = /\s*((\[[^\]]+\])|(\(\d+\))).*$/;

const info = tracks.map(track => {
  const split = track.split(/\s+\-+\s+/);
  let title = split[0];
  let artist = split[1];
  if (split.length >= 2) {
    artist = artist.replace(regex, '');
  } else {
    title = title.replace(regex, '');
  }
  return {
    title,
    artist
  }
});
console.log(info);

Answer 5

Answer №3

To achieve the desired outcome, follow the steps below: 1. For Titles, extract the substring starting from the position after '- ' and before ' [' (if present). If ' [' is not found, take the substring until the end.

v.substring(v.indexOf('- ')+1, v.indexOf(' [') !== -1? v.indexOf(' [') : v.length).trim()

For Artists, extract the substring starting from position 0 to the index of '-'
```
v.substr(0, v.indexOf('-')).trim()})
```

Refer to the code snippet below for a working example:

let arr = [
  "Lophelia -- MYTCH [Acoustic Prog-Rock/Jazz] (2019)",
  "Julia Jacklin - Pressure to Party [Rock] (2019)",
  "The Homeless Gospel Choir - I'm Going Home [Folk-Punk] (2019) cover of Pat the Bunny | A Fistful of Vinyl",
  "Lea Salonga and Simon Bowman - The last night of the world [musical] (1990)",
  "$uicideboy$ - Death",
  "SNFU -- Joni Mitchell Tapes [Punk/Alternative] (1993)",
  "Blab - afdosafhsd (2000)",
  "Something strange and badly formatted without any artist [Classical]"
]

let result = arr.reduce((acc, v) => {
  acc.push({
    title: v.substring(v.indexOf('- ')+1, v.indexOf(' [') !== -1? v.indexOf(' [') : (v.indexOf(' (') !== -1? v.indexOf(' (') : v.length)).trim(), 
    artist: v.substr(0, v.indexOf('-')).trim()})
  return acc
}, [])

console.log(result)

Visit the following CodePen link for a live demo: https://codepen.io/nagasai/pen/zQKRXj?editors=1010

Answer 6

To achieve the desired outcome, follow the steps below: 1. For Titles, extract the substring starting from the position after '- ' and before ' [' (if present). If ' [' is not found, take the substring until the end.

v.substring(v.indexOf('- ')+1, v.indexOf(' [') !== -1? v.indexOf(' [') : v.length).trim()

For Artists, extract the substring starting from position 0 to the index of '-'
```
v.substr(0, v.indexOf('-')).trim()})
```

Refer to the code snippet below for a working example:

let arr = [
  "Lophelia -- MYTCH [Acoustic Prog-Rock/Jazz] (2019)",
  "Julia Jacklin - Pressure to Party [Rock] (2019)",
  "The Homeless Gospel Choir - I'm Going Home [Folk-Punk] (2019) cover of Pat the Bunny | A Fistful of Vinyl",
  "Lea Salonga and Simon Bowman - The last night of the world [musical] (1990)",
  "$uicideboy$ - Death",
  "SNFU -- Joni Mitchell Tapes [Punk/Alternative] (1993)",
  "Blab - afdosafhsd (2000)",
  "Something strange and badly formatted without any artist [Classical]"
]

let result = arr.reduce((acc, v) => {
  acc.push({
    title: v.substring(v.indexOf('- ')+1, v.indexOf(' [') !== -1? v.indexOf(' [') : (v.indexOf(' (') !== -1? v.indexOf(' (') : v.length)).trim(), 
    artist: v.substr(0, v.indexOf('-')).trim()})
  return acc
}, [])

console.log(result)

Visit the following CodePen link for a live demo: https://codepen.io/nagasai/pen/zQKRXj?editors=1010

Extracting the name of a track from the /r/listenToThis subreddit for an IFTTT automation script

Answer №1

Answer №2

Answer №3

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