unicodeToBes.ts

import { PagesRounded } from "@mui/icons-material";

export function unicodeToBes(
  unicode: string,
  isPageNumberOn: boolean,
): Uint8Array {
  const output = [
    0x25, 0x42, 0x45, 0x54, 0x34, 0x30, 0x30, 0x25, 0x32, 0x30, 0x32, 0x33,
    0x2f, 0x30, 0x35, 0x2f, 0x31, 0x36, 0x20, 0x20, 0x45, 0x35, 0x33, 0x33,
    0x32, 0x32, 0x20, 0x20, 0x20, 0x20, 0x20, 0x30,
  ];
  const mapping_num = {
    "1": "⠁",
    "2": "⠃",
    "3": "⠉",
    "4": "⠙",
    "5": "⠑",
    "6": "⠋",
    "7": "⠛",
    "8": "⠓",
    "9": "⠊",
    "0": "⠚",
  };
  for (var i = 0; i < 512 - 32; i++) {
    output.push(0x20);
  }
  const semiheader = [0xff, 0xff, 0xff, 0x54];
  for (var i = 0; i < 5; i++) {
    output.push(semiheader[i]);
  }
  for (var i = 0; i < 511 - 4; i++) {
    output.push(0x20);
  }

  var header = [0xff, 0x00, 0x00, 0xfd];
  // 2つ目,3つ目はBESファイルの文字数を表す

  /***ページ番号なし
  for (var i = 0; i < 4; i++) {
    output.push(header[i]);
    console.log(output.length);
  }
  var all_letters = 0;
  for (var i = 0; i < 27; i++) {
    output.push(0xa0);
    all_letters += 1;
  }
  output.push(0xfe);
  var letters = 0;
  var lines = 0;
  var pages = 0;
  var separate_pos = 0; // 単語区切りの空白の位置
  for (const char of unicode) {
    const codePoint = char.codePointAt(0);

    if (lines == 21) {
      // ページをまたぐとき
      lines = 0;
      pages += 1;
    }
    if (letters == 33) {
      // 文字が1行におさまらず改行
      if (codePoint == 0x2800) {
        output.push(0xfe);
        lines += 1;
        letters = 0;
      } else {
        // 次の文字が空白でないとき、単語区切りに戻って改行
        output.splice(separate_pos, 0, 0xfe);
        lines += 1;
        letters = output.length - separate_pos - 1;
      }
    }

    if (codePoint == 0x2800) {
      separate_pos = output.length;
    }
    if (codePoint != null) {
      if (codePoint >= 0x2800 && codePoint <= 0x28ff) {
        output.push(codePoint - 0x2800 + 0xa0);
        letters += 1;
        all_letters += 1;
      }
    }
    if (char == "n") {
      // "\n"で改行
      output.push(0x0d);
      output.push(0xfe);
      lines += 1;
      letters = 0;
    }
  }
  output[31] = 0x30 + pages;
  for (var i = 0; i + lines < 21; i++) {
    output.push(0xfe);
  }
  output.push(0xff);

  // 文字数を代入
  var letters_num = 0x1a + all_letters;
  output[1025] = (letters_num % 255) + 12;
  output[1026] = Math.floor(letters_num / 255);
  */

  if (isPageNumberOn) {
    console.log("have index");
    // ページ番号あり
    for (var i = 0; i < 4; i++) {
      output.push(header[i]);
    }
    var letters_on_page = 0;
    for (var i = 0; i < 27; i++) {
      output.push(0xa0);
      letters_on_page += 1;
    }
    output.push(0xdc);
    var num = "⠁";
    var num_codePoint = num.codePointAt(0);
    if (num_codePoint != null) {
      output.push(num_codePoint - 0x2800 + 0xa0);
    }
    letters_on_page += 2;
    output.push(0xfe);
    var letters = 0;
    var lines = 0;
    var pages = 0;
    var separate_pos = 0; // 単語区切りの空白の位置
    var num_pos = 1025; // ページごとの文字数を入力する位置
    var letters_num = 0x1a;

    for (const char of unicode) {
      const codePoint = char.codePointAt(0);

      if (lines === 21) {
        // ページをまたぐとき
        lines = 0;
        pages += 1;
        letters_num = 0x19 + letters_on_page;
        output[num_pos] = (letters_num % 255) - Math.floor(letters_num / 255);
        /***
        if (pages === 1) {
          output[num_pos] = (letters_num % 255) + 13;
        } else {
          output[num_pos] = letters_num % 255;
        }
        */
        // 8B 01 <> 89 01
        output[num_pos + 1] = Math.floor(letters_num / 255);
        console.log("Page: ", pages, num_pos, Math.floor(letters_num / 255));
        num_pos = output.length;
        console.log("sep", num_pos);
        output.push(0x00);
        // console.log(output.length);
        output.push(0x00);
        output.push(0xfd);
        letters_on_page = 0;
        for (var i = 0; i < 27; i++) {
          output.push(0xa0);
          letters_on_page += 1;
        }
        output.push(0xdc);
        letters_on_page += 1;
        const num_str = String(pages + 1);
        for (var i = 0; i < num_str.length; i++) {
          num = mapping_num[num_str[i]];
          console.log(i, num_str, num);
          num_codePoint = num.codePointAt(0);
          if (num_codePoint != null) {
            output.push(num_codePoint - 0x2800 + 0xa0);
          }
          letters_on_page += 1;
        }
        output.push(0xfe);
      }
      if (letters === 33) {
        // 文が1行におさまらないとき改行
        if (codePoint === 0x2800) {
          output.push(0xfe);
          lines += 1;
          letters = 0;
        } else {
          // 次の文字が空白でないとき、単語区切りに戻って改行
          output.splice(separate_pos, 0, 0xfe);
          lines += 1;
          letters = output.length - separate_pos - 1;
        }
        if (lines === 21) {
          // ページをまたぐとき
          lines = 0;
          pages += 1;
          // 次ページに移った文字数を引く
          letters_on_page = letters_on_page - letters;
          letters_num = 0x19 + letters_on_page;
          output[num_pos] = (letters_num % 255) - Math.floor(letters_num / 255);
          output[num_pos + 1] = Math.floor(letters_num / 255);
          console.log("Page: ", pages, num_pos, Math.floor(letters_num / 255));
          num_pos = separate_pos + 1;
          console.log("con", num_pos);
          output.splice(separate_pos + 1, 0, 0x00);
          output.splice(separate_pos + 2, 0, 0x00);
          output.splice(separate_pos + 3, 0, 0xfd);
          letters_on_page = letters;
          for (var i = 0; i < 27; i++) {
            output.splice(separate_pos + i + 4, 0, 0xa0);
            letters_on_page += 1;
          }
          output.splice(separate_pos + 31, 0, 0xdc);
          letters_on_page += 1;
          const num_str = String(pages + 1);
          for (var i = 0; i < num_str.length; i++) {
            num = mapping_num[num_str[i]];
            num_codePoint = num.codePointAt(0);
            if (num_codePoint != null) {
              output.splice(
                separate_pos + 32 + i,
                0,
                num_codePoint - 0x2800 + 0xa0,
              );
            }
            letters_on_page += 1;
          }
          output.splice(separate_pos + 32 + num_str.length, 0, 0xfe);
        }
      }

      if (codePoint === 0x2800) {
        separate_pos = output.length;
      }
      if (codePoint != null) {
        if (codePoint >= 0x2800 && codePoint <= 0x28ff) {
          output.push(codePoint - 0x2800 + 0xa0);
          letters += 1;
          letters_on_page += 1;
        }
      }
      if (char === "n") {
        // "\n"で改行
        output.push(0x0d);
        letters_on_page += 1;
        output.push(0xfe);
        lines += 1;
        letters = 0;
      }
    }

    if (pages < 10) {
      output[31] = 0x30 + pages;
    } else {
      output[31] = 0x30 + Math.floor(pages / 10);
      output[32] = 0x30 + (pages % 10);
    }

    for (var i = 0; i + lines < 21; i++) {
      output.push(0xfe);
    }
    output.push(0xff);

    letters_num = 0x19 + letters_on_page;
    output[num_pos] = letters_num % 255;
    output[num_pos + 1] = Math.floor(letters_num / 255);
  } else {
    console.log("No index");
    console.log(isPageNumberOn);
    // ページ番号なし
    for (var i = 0; i < 4; i++) {
      output.push(header[i]);
      console.log(output.length);
    }
    var all_letters = 0;
    for (var i = 0; i < 27; i++) {
      output.push(0xa0);
      all_letters += 1;
    }
    output.push(0xfe);
    var letters = 0;
    var lines = 0;
    var pages = 0;
    var separate_pos = 0; // 単語区切りの空白の位置
    for (const char of unicode) {
      const codePoint = char.codePointAt(0);

      if (lines == 21) {
        // ページをまたぐとき
        lines = 0;
        pages += 1;
      }
      if (letters == 33) {
        // 文字が1行におさまらず改行
        if (codePoint == 0x2800) {
          output.push(0xfe);
          lines += 1;
          letters = 0;
        } else {
          // 次の文字が空白でないとき、単語区切りに戻って改行
          output.splice(separate_pos, 0, 0xfe);
          lines += 1;
          letters = output.length - separate_pos - 1;
        }
      }

      if (codePoint == 0x2800) {
        separate_pos = output.length;
      }
      if (codePoint != null) {
        if (codePoint >= 0x2800 && codePoint <= 0x28ff) {
          output.push(codePoint - 0x2800 + 0xa0);
          letters += 1;
          all_letters += 1;
        }
      }
      if (char == "n") {
        // "\n"で改行
        output.push(0x0d);
        output.push(0xfe);
        lines += 1;
        letters = 0;
      }
    }
    output[31] = 0x30 + pages;
    for (var i = 0; i + lines < 21; i++) {
      output.push(0xfe);
    }
    output.push(0xff);

    // 文字数を代入
    var letters_num = 0x1a + all_letters;
    output[1025] = (letters_num % 255) + 12;
    output[1026] = Math.floor(letters_num / 255);
  }

  return new Uint8Array(output);
}

// 71 01 -> 77 01