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fix: btoa error #114

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Sep 14, 2022
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133 changes: 133 additions & 0 deletions src/Base64.ts
Original file line number Diff line number Diff line change
@@ -0,0 +1,133 @@
/**
*
* Base64 encode / decode
* http://www.webtoolkit.info/javascript_base64.html
*
**/
export const Base64 = {
// private property
_keyStr: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",

// public method for encoding
encode: function (input: string) {
let output = "";
let chr1, chr2, chr3, enc1, enc2, enc3, enc4;
let i = 0;

input = Base64._utf8_encode(input);

while (i < input.length) {
chr1 = input.charCodeAt(i++);
chr2 = input.charCodeAt(i++);
chr3 = input.charCodeAt(i++);

enc1 = chr1 >> 2;
enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
enc4 = chr3 & 63;

if (isNaN(chr2)) {
enc3 = enc4 = 64;
} else if (isNaN(chr3)) {
enc4 = 64;
}

output =
output +
this._keyStr.charAt(enc1) +
this._keyStr.charAt(enc2) +
this._keyStr.charAt(enc3) +
this._keyStr.charAt(enc4);
} // Whend

return output;
}, // End Function encode

// public method for decoding
decode: function (input: string) {
let output = "";
let chr1, chr2, chr3;
let enc1, enc2, enc3, enc4;
let i = 0;

input = input.replace(/[^A-Za-z0-9+/=]/g, "");
while (i < input.length) {
enc1 = this._keyStr.indexOf(input.charAt(i++));
enc2 = this._keyStr.indexOf(input.charAt(i++));
enc3 = this._keyStr.indexOf(input.charAt(i++));
enc4 = this._keyStr.indexOf(input.charAt(i++));

chr1 = (enc1 << 2) | (enc2 >> 4);
chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
chr3 = ((enc3 & 3) << 6) | enc4;

output = output + String.fromCharCode(chr1);

if (enc3 != 64) {
output = output + String.fromCharCode(chr2);
}

if (enc4 != 64) {
output = output + String.fromCharCode(chr3);
}
} // Whend

output = Base64._utf8_decode(output);

return output;
}, // End Function decode

// private method for UTF-8 encoding
_utf8_encode: function (string: string) {
let utftext = "";
string = string.replace(/\r\n/g, "\n");

for (let n = 0; n < string.length; n++) {
const c = string.charCodeAt(n);

if (c < 128) {
utftext += String.fromCharCode(c);
} else if (c > 127 && c < 2048) {
utftext += String.fromCharCode((c >> 6) | 192);
utftext += String.fromCharCode((c & 63) | 128);
} else {
utftext += String.fromCharCode((c >> 12) | 224);
utftext += String.fromCharCode(((c >> 6) & 63) | 128);
utftext += String.fromCharCode((c & 63) | 128);
}
} // Next n

return utftext;
}, // End Function _utf8_encode

// private method for UTF-8 decoding
_utf8_decode: function (utftext: string) {
let string = "";
let i = 0;
let c, c1, c2, c3;
// eslint-disable-next-line @typescript-eslint/no-unused-vars
c = c1 = c2 = 0;

while (i < utftext.length) {
c = utftext.charCodeAt(i);

if (c < 128) {
string += String.fromCharCode(c);
i++;
} else if (c > 191 && c < 224) {
c2 = utftext.charCodeAt(i + 1);
string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
i += 2;
} else {
c2 = utftext.charCodeAt(i + 1);
c3 = utftext.charCodeAt(i + 2);
string += String.fromCharCode(
((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63)
);
i += 3;
}
} // Whend

return string;
}, // End Function _utf8_decode
};
10 changes: 8 additions & 2 deletions src/commands.ts
Original file line number Diff line number Diff line change
@@ -1,5 +1,6 @@
import { FILE_SUFFIX, LINK_PREFIX, TASK } from "./constants";
import type pixelmatch from "pixelmatch";
import { Base64 } from "./Base64";

declare global {
// eslint-disable-next-line @typescript-eslint/no-namespace
Expand Down Expand Up @@ -139,8 +140,13 @@ Cypress.Commands.add(
if (res.error) {
log.set(
"message",
`${res.message}\n[See comparison](${LINK_PREFIX}${btoa(
JSON.stringify({ title, imgPath })
`${res.message}\n[See comparison](${LINK_PREFIX}${Base64.encode(
encodeURIComponent(
JSON.stringify({
title,
imgPath,
})
)
)})`
);
log.set("consoleProps", () => res);
Expand Down
7 changes: 6 additions & 1 deletion src/support.ts
Original file line number Diff line number Diff line change
@@ -1,3 +1,4 @@
import { Base64 } from "./Base64";
import "./commands";
import { FILE_SUFFIX, LINK_PREFIX, OVERLAY_CLASS, TASK } from "./constants";

Expand Down Expand Up @@ -91,7 +92,11 @@ after(() => {
if (!top) return false;

const { title, imgPath } = JSON.parse(
atob(e.currentTarget.getAttribute("href").substring(LINK_PREFIX.length))
decodeURIComponent(
Base64.decode(
e.currentTarget.getAttribute("href").substring(LINK_PREFIX.length)
)
)
);
queueClear();

Expand Down