@igo2/utils
Version:
85 lines • 12.2 kB
JavaScript
/* eslint-disable */
const ALPHA = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
export class Base64 {
static PADCHAR = '=';
static ALPHA = ALPHA;
static getByte(s, i) {
const x = s.charCodeAt(i);
return x;
}
static getByte64(s, i) {
const idx = this.ALPHA.indexOf(s.charAt(i));
return idx;
}
static decode(s) {
let pads = 0, i, b10, imax = s.length, x = [];
s = String(s);
if (imax === 0) {
return s;
}
if (s.charAt(imax - 1) === this.PADCHAR) {
pads = 1;
if (s.charAt(imax - 2) === this.PADCHAR) {
pads = 2;
}
imax -= 4;
}
for (i = 0; i < imax; i += 4) {
b10 =
(this.getByte64(s, i) << 18) |
(this.getByte64(s, i + 1) << 12) |
(this.getByte64(s, i + 2) << 6) |
this.getByte64(s, i + 3);
x.push(String.fromCharCode(b10 >> 16, (b10 >> 8) & 255, b10 & 255));
}
switch (pads) {
case 1:
b10 =
(this.getByte64(s, i) << 18) |
(this.getByte64(s, i + 1) << 12) |
(this.getByte64(s, i + 2) << 6);
x.push(String.fromCharCode(b10 >> 16, (b10 >> 8) & 255));
break;
case 2:
b10 = (this.getByte64(s, i) << 18) | (this.getByte64(s, i + 1) << 12);
x.push(String.fromCharCode(b10 >> 16));
break;
}
return x.join('');
}
static encode(s) {
s = String(s);
let i, b10, x = [], imax = s.length - (s.length % 3);
if (s.length === 0) {
return s;
}
for (i = 0; i < imax; i += 3) {
b10 =
(this.getByte(s, i) << 16) |
(this.getByte(s, i + 1) << 8) |
this.getByte(s, i + 2);
x.push(this.ALPHA.charAt(b10 >> 18));
x.push(this.ALPHA.charAt((b10 >> 12) & 63));
x.push(this.ALPHA.charAt((b10 >> 6) & 63));
x.push(this.ALPHA.charAt(b10 & 63));
}
switch (s.length - imax) {
case 1:
b10 = this.getByte(s, i) << 16;
x.push(this.ALPHA.charAt(b10 >> 18) +
this.ALPHA.charAt((b10 >> 12) & 63) +
this.PADCHAR +
this.PADCHAR);
break;
case 2:
b10 = (this.getByte(s, i) << 16) | (this.getByte(s, i + 1) << 8);
x.push(this.ALPHA.charAt(b10 >> 18) +
this.ALPHA.charAt((b10 >> 12) & 63) +
this.ALPHA.charAt((b10 >> 6) & 63) +
this.PADCHAR);
break;
}
return x.join('');
}
}
//# sourceMappingURL=data:application/json;base64,{"version":3,"file":"base64.js","sourceRoot":"","sources":["../../../../packages/utils/src/lib/base64.ts"],"names":[],"mappings":"AAAA,oBAAoB;AAEpB,MAAM,KAAK,GACT,kEAAkE,CAAC;AAErE,MAAM,OAAO,MAAM;IACT,MAAM,CAAC,OAAO,GAAW,GAAG,CAAC;IAC7B,MAAM,CAAC,KAAK,GAAW,KAAK,CAAC;IAE7B,MAAM,CAAC,OAAO,CAAC,CAAS,EAAE,CAAS;QACzC,MAAM,CAAC,GAAG,CAAC,CAAC,UAAU,CAAC,CAAC,CAAC,CAAC;QAC1B,OAAO,CAAC,CAAC;IACX,CAAC;IAEO,MAAM,CAAC,SAAS,CAAC,CAAS,EAAE,CAAS;QAC3C,MAAM,GAAG,GAAG,IAAI,CAAC,KAAK,CAAC,OAAO,CAAC,CAAC,CAAC,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC;QAC5C,OAAO,GAAG,CAAC;IACb,CAAC;IAEM,MAAM,CAAC,MAAM,CAAC,CAAS;QAC5B,IAAI,IAAI,GAAG,CAAC,EACV,CAAC,EACD,GAAG,EACH,IAAI,GAAG,CAAC,CAAC,MAAM,EACf,CAAC,GAAG,EAAE,CAAC;QAET,CAAC,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC;QAEd,IAAI,IAAI,KAAK,CAAC,EAAE,CAAC;YACf,OAAO,CAAC,CAAC;QACX,CAAC;QAED,IAAI,CAAC,CAAC,MAAM,CAAC,IAAI,GAAG,CAAC,CAAC,KAAK,IAAI,CAAC,OAAO,EAAE,CAAC;YACxC,IAAI,GAAG,CAAC,CAAC;YACT,IAAI,CAAC,CAAC,MAAM,CAAC,IAAI,GAAG,CAAC,CAAC,KAAK,IAAI,CAAC,OAAO,EAAE,CAAC;gBACxC,IAAI,GAAG,CAAC,CAAC;YACX,CAAC;YACD,IAAI,IAAI,CAAC,CAAC;QACZ,CAAC;QAED,KAAK,CAAC,GAAG,CAAC,EAAE,CAAC,GAAG,IAAI,EAAE,CAAC,IAAI,CAAC,EAAE,CAAC;YAC7B,GAAG;gBACD,CAAC,IAAI,CAAC,SAAS,CAAC,CAAC,EAAE,CAAC,CAAC,IAAI,EAAE,CAAC;oBAC5B,CAAC,IAAI,CAAC,SAAS,CAAC,CAAC,EAAE,CAAC,GAAG,CAAC,CAAC,IAAI,EAAE,CAAC;oBAChC,CAAC,IAAI,CAAC,SAAS,CAAC,CAAC,EAAE,CAAC,GAAG,CAAC,CAAC,IAAI,CAAC,CAAC;oBAC/B,IAAI,CAAC,SAAS,CAAC,CAAC,EAAE,CAAC,GAAG,CAAC,CAAC,CAAC;YAC3B,CAAC,CAAC,IAAI,CAAC,MAAM,CAAC,YAAY,CAAC,GAAG,IAAI,EAAE,EAAE,CAAC,GAAG,IAAI,CAAC,CAAC,GAAG,GAAG,EAAE,GAAG,GAAG,GAAG,CAAC,CAAC,CAAC;QACtE,CAAC;QAED,QAAQ,IAAI,EAAE,CAAC;YACb,KAAK,CAAC;gBACJ,GAAG;oBACD,CAAC,IAAI,CAAC,SAAS,CAAC,CAAC,EAAE,CAAC,CAAC,IAAI,EAAE,CAAC;wBAC5B,CAAC,IAAI,CAAC,SAAS,CAAC,CAAC,EAAE,CAAC,GAAG,CAAC,CAAC,IAAI,EAAE,CAAC;wBAChC,CAAC,IAAI,CAAC,SAAS,CAAC,CAAC,EAAE,CAAC,GAAG,CAAC,CAAC,IAAI,CAAC,CAAC,CAAC;gBAClC,CAAC,CAAC,IAAI,CAAC,MAAM,CAAC,YAAY,CAAC,GAAG,IAAI,EAAE,EAAE,CAAC,GAAG,IAAI,CAAC,CAAC,GAAG,GAAG,CAAC,CAAC,CAAC;gBACzD,MAAM;YACR,KAAK,CAAC;gBACJ,GAAG,GAAG,CAAC,IAAI,CAAC,SAAS,CAAC,CAAC,EAAE,CAAC,CAAC,IAAI,EAAE,CAAC,GAAG,CAAC,IAAI,CAAC,SAAS,CAAC,CAAC,EAAE,CAAC,GAAG,CAAC,CAAC,IAAI,EAAE,CAAC,CAAC;gBACtE,CAAC,CAAC,IAAI,CAAC,MAAM,CAAC,YAAY,CAAC,GAAG,IAAI,EAAE,CAAC,CAAC,CAAC;gBACvC,MAAM;QACV,CAAC;QAED,OAAO,CAAC,CAAC,IAAI,CAAC,EAAE,CAAC,CAAC;IACpB,CAAC;IAEM,MAAM,CAAC,MAAM,CAAC,CAAS;QAC5B,CAAC,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC;QAEd,IAAI,CAAC,EACH,GAAG,EACH,CAAC,GAAG,EAAE,EACN,IAAI,GAAG,CAAC,CAAC,MAAM,GAAG,CAAC,CAAC,CAAC,MAAM,GAAG,CAAC,CAAC,CAAC;QAEnC,IAAI,CAAC,CAAC,MAAM,KAAK,CAAC,EAAE,CAAC;YACnB,OAAO,CAAC,CAAC;QACX,CAAC;QAED,KAAK,CAAC,GAAG,CAAC,EAAE,CAAC,GAAG,IAAI,EAAE,CAAC,IAAI,CAAC,EAAE,CAAC;YAC7B,GAAG;gBACD,CAAC,IAAI,CAAC,OAAO,CAAC,CAAC,EAAE,CAAC,CAAC,IAAI,EAAE,CAAC;oBAC1B,CAAC,IAAI,CAAC,OAAO,CAAC,CAAC,EAAE,CAAC,GAAG,CAAC,CAAC,IAAI,CAAC,CAAC;oBAC7B,IAAI,CAAC,OAAO,CAAC,CAAC,EAAE,CAAC,GAAG,CAAC,CAAC,CAAC;YACzB,CAAC,CAAC,IAAI,CAAC,IAAI,CAAC,KAAK,CAAC,MAAM,CAAC,GAAG,IAAI,EAAE,CAAC,CAAC,CAAC;YACrC,CAAC,CAAC,IAAI,CAAC,IAAI,CAAC,KAAK,CAAC,MAAM,CAAC,CAAC,GAAG,IAAI,EAAE,CAAC,GAAG,EAAE,CAAC,CAAC,CAAC;YAC5C,CAAC,CAAC,IAAI,CAAC,IAAI,CAAC,KAAK,CAAC,MAAM,CAAC,CAAC,GAAG,IAAI,CAAC,CAAC,GAAG,EAAE,CAAC,CAAC,CAAC;YAC3C,CAAC,CAAC,IAAI,CAAC,IAAI,CAAC,KAAK,CAAC,MAAM,CAAC,GAAG,GAAG,EAAE,CAAC,CAAC,CAAC;QACtC,CAAC;QAED,QAAQ,CAAC,CAAC,MAAM,GAAG,IAAI,EAAE,CAAC;YACxB,KAAK,CAAC;gBACJ,GAAG,GAAG,IAAI,CAAC,OAAO,CAAC,CAAC,EAAE,CAAC,CAAC,IAAI,EAAE,CAAC;gBAC/B,CAAC,CAAC,IAAI,CACJ,IAAI,CAAC,KAAK,CAAC,MAAM,CAAC,GAAG,IAAI,EAAE,CAAC;oBAC1B,IAAI,CAAC,KAAK,CAAC,MAAM,CAAC,CAAC,GAAG,IAAI,EAAE,CAAC,GAAG,EAAE,CAAC;oBACnC,IAAI,CAAC,OAAO;oBACZ,IAAI,CAAC,OAAO,CACf,CAAC;gBACF,MAAM;YACR,KAAK,CAAC;gBACJ,GAAG,GAAG,CAAC,IAAI,CAAC,OAAO,CAAC,CAAC,EAAE,CAAC,CAAC,IAAI,EAAE,CAAC,GAAG,CAAC,IAAI,CAAC,OAAO,CAAC,CAAC,EAAE,CAAC,GAAG,CAAC,CAAC,IAAI,CAAC,CAAC,CAAC;gBACjE,CAAC,CAAC,IAAI,CACJ,IAAI,CAAC,KAAK,CAAC,MAAM,CAAC,GAAG,IAAI,EAAE,CAAC;oBAC1B,IAAI,CAAC,KAAK,CAAC,MAAM,CAAC,CAAC,GAAG,IAAI,EAAE,CAAC,GAAG,EAAE,CAAC;oBACnC,IAAI,CAAC,KAAK,CAAC,MAAM,CAAC,CAAC,GAAG,IAAI,CAAC,CAAC,GAAG,EAAE,CAAC;oBAClC,IAAI,CAAC,OAAO,CACf,CAAC;gBACF,MAAM;QACV,CAAC;QAED,OAAO,CAAC,CAAC,IAAI,CAAC,EAAE,CAAC,CAAC;IACpB,CAAC","sourcesContent":["/* eslint-disable */\n\nconst ALPHA =\n  'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';\n\nexport class Base64 {\n  private static PADCHAR: string = '=';\n  private static ALPHA: string = ALPHA;\n\n  private static getByte(s: string, i: number): number {\n    const x = s.charCodeAt(i);\n    return x;\n  }\n\n  private static getByte64(s: string, i: number): number {\n    const idx = this.ALPHA.indexOf(s.charAt(i));\n    return idx;\n  }\n\n  public static decode(s: string): string {\n    let pads = 0,\n      i,\n      b10,\n      imax = s.length,\n      x = [];\n\n    s = String(s);\n\n    if (imax === 0) {\n      return s;\n    }\n\n    if (s.charAt(imax - 1) === this.PADCHAR) {\n      pads = 1;\n      if (s.charAt(imax - 2) === this.PADCHAR) {\n        pads = 2;\n      }\n      imax -= 4;\n    }\n\n    for (i = 0; i < imax; i += 4) {\n      b10 =\n        (this.getByte64(s, i) << 18) |\n        (this.getByte64(s, i + 1) << 12) |\n        (this.getByte64(s, i + 2) << 6) |\n        this.getByte64(s, i + 3);\n      x.push(String.fromCharCode(b10 >> 16, (b10 >> 8) & 255, b10 & 255));\n    }\n\n    switch (pads) {\n      case 1:\n        b10 =\n          (this.getByte64(s, i) << 18) |\n          (this.getByte64(s, i + 1) << 12) |\n          (this.getByte64(s, i + 2) << 6);\n        x.push(String.fromCharCode(b10 >> 16, (b10 >> 8) & 255));\n        break;\n      case 2:\n        b10 = (this.getByte64(s, i) << 18) | (this.getByte64(s, i + 1) << 12);\n        x.push(String.fromCharCode(b10 >> 16));\n        break;\n    }\n\n    return x.join('');\n  }\n\n  public static encode(s: string): string {\n    s = String(s);\n\n    let i,\n      b10,\n      x = [],\n      imax = s.length - (s.length % 3);\n\n    if (s.length === 0) {\n      return s;\n    }\n\n    for (i = 0; i < imax; i += 3) {\n      b10 =\n        (this.getByte(s, i) << 16) |\n        (this.getByte(s, i + 1) << 8) |\n        this.getByte(s, i + 2);\n      x.push(this.ALPHA.charAt(b10 >> 18));\n      x.push(this.ALPHA.charAt((b10 >> 12) & 63));\n      x.push(this.ALPHA.charAt((b10 >> 6) & 63));\n      x.push(this.ALPHA.charAt(b10 & 63));\n    }\n\n    switch (s.length - imax) {\n      case 1:\n        b10 = this.getByte(s, i) << 16;\n        x.push(\n          this.ALPHA.charAt(b10 >> 18) +\n            this.ALPHA.charAt((b10 >> 12) & 63) +\n            this.PADCHAR +\n            this.PADCHAR\n        );\n        break;\n      case 2:\n        b10 = (this.getByte(s, i) << 16) | (this.getByte(s, i + 1) << 8);\n        x.push(\n          this.ALPHA.charAt(b10 >> 18) +\n            this.ALPHA.charAt((b10 >> 12) & 63) +\n            this.ALPHA.charAt((b10 >> 6) & 63) +\n            this.PADCHAR\n        );\n        break;\n    }\n\n    return x.join('');\n  }\n}\n"]}