正在为 IFTTT 小程序解析 /r/listenToThis 中的歌曲标题

Question

我有一组歌曲名称，来自 this subreddit，如下所示：

[
  "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]"
  ...
]

我正在尝试从他们那里解析标题和艺术家，但我真的很难用正则表达式。

我尝试使用 "-" 拆分它，但之后才得到艺术家真的很烦人。

我也尝试过使用正则表达式，但我无法真正让某些东西正常工作。这就是我对艺术家的看法：/(?<= -{1,2} )[\S ]*(?= \[|\( )/i 这是标题：/[\S ]*(?= -{1,2} )/i.

每个条目都是一个歌曲名称。在歌曲名称之前可能是歌曲的艺术家，后面跟着一两个（或者 3 个？）破折号。然后可以在方括号中添加流派 and/or 括号中的发布日期。我不期望完美的准确性，某些格式可能很奇怪，在那些情况下，我宁愿 artist 未定义而不是一些奇怪的解析。

例如：

[
  { 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" }, // Probably impossible with some kind of AI
  { title: "Irrationality" artist: "Victor Love" }
]

Answer 1

要达到预期结果，请使用以下选项 1. 对于标题，使用 substr 从 indexOf of '- '(extra space) 的位置开始并检查 '[' 如果没有 '[' 的索引，然后使用子字符串长度

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

对于艺术家，使用位置为 0 且 indexOf 为“-”的 substr

v.substr(0, v.indexOf('-')).trim()})

参考工作代码

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)

codepen - https://codepen.io/nagasai/pen/zQKRXj?editors=1010

Answer 2

你可以这样做：

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]",
];

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

const details = songs.map(song => {
  const splitted = song.split(/\s+\-+\s+/);
  let title = splitted[0];
  let artist = splitted[1];
  if (splitted.length >= 2) {
    artist = artist.replace(trailingRgx, '');
  } else {
    title = title.replace(trailingRgx, '');
  }
  return {
    title,
    artist
  }
});
console.log(details);

Answer 3

您可以使用此正则表达式来捕获您在 post 中描述的标题和艺术家部分。

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

Regex Demo（故意以 PCRE 风格显示以保留组颜色以吸引视觉吸引力，但它也适用于 Javascript 风格）

JS代码演示，

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

正在为 IFTTT 小程序解析 /r/listenToThis 中的歌曲标题

Parsing a song title from /r/listenToThis for an IFTTT applet

javascript

string

typescript

parsing

ifttt