Gists
This is a sample script for splitting the binary data with search data using Google Apps Script.
Sample script
/**
* Split byteArray by a search data.
* @param {Array} baseData Input byteArray of base data.
* @param {Array} searchData Input byteArray of search data using split.
* @return {Array} An array including byteArray.
*/
function splitByteArrayBySearchData_(baseData, searchData) {
if (!Array.isArray(baseData) || !Array.isArray(searchData)) {
throw new Error("Please give byte array.");
}
const search = searchData.join("");
const bLen = searchData.length;
const res = [];
let idx = 0;
do {
idx = baseData.findIndex(
(_, i, a) => [...Array(bLen)].map((_, j) => a[j + i]).join("") == search
);
if (idx != -1) {
res.push(baseData.splice(0, idx));
baseData.splice(0, bLen);
} else {
res.push(baseData.splice(0));
}
} while (idx != -1);
return res;
}
// Please run this function.
function main() {
const sampleString = "abc123def123ghi123jkl";
const splitValue = "123";
const res1 = splitByteArrayBySearchData(
...[sampleString, splitValue].map((e) => Utilities.newBlob(e).getBytes())
);
const res2 = res1.map((e) => Utilities.newBlob(e).getDataAsString());
console.log(res1); // [[97,98,99],[100,101,102],[103,104,105],[106,107,108]]
console.log(res2); // ["abc","def","ghi","jkl"]
}
-
When main() is run, the sample input values of "abc123def123ghi123jkl" is split by "123". And, [[97,98,99],[100,101,102],[103,104,105],[106,107,108]] is obtained. In this case, when [[97,98,99],[100,101,102],[103,104,105],[106,107,108]] is converted to the string for confirming the result value, it becomes ["abc","def","ghi","jkl"].
