forked from sheetjs/sheetjs
40 lines
1.4 KiB
TypeScript
40 lines
1.4 KiB
TypeScript
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/*! sheetjs (C) 2013-present SheetJS -- http://sheetjs.com */
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var u8_to_dataview = (array: Uint8Array): DataView => new DataView(array.buffer, array.byteOffset, array.byteLength);
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export { u8_to_dataview };
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var u8str = (u8: Uint8Array): string => new TextDecoder().decode(u8);
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export { u8str };
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var u8concat = (u8a: Uint8Array[]): Uint8Array => {
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var len = u8a.reduce((acc: number, x: Uint8Array) => acc + x.length, 0);
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var out = new Uint8Array(len);
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var off = 0;
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u8a.forEach(u8 => { out.set(u8, off); off += u8.length; });
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return out;
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};
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export { u8concat };
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var indent = (str: string, depth: number /* = 1 */): string => str.split(/\n/g).map(x => x && " ".repeat(depth) + x).join("\n");
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export { indent };
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function u8indexOf(u8: Uint8Array, data: string | number | Uint8Array, byteOffset?: number): number {
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//if(Buffer.isBuffer(u8)) return u8.indexOf(data, byteOffset);
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if(typeof data == "number") return u8.indexOf(data, byteOffset);
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var l = byteOffset;
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if(typeof data == "string") {
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outs: while((l = u8.indexOf(data.charCodeAt(0), l)) > -1) {
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++l;
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for(var j = 1; j < data.length; ++j) if(u8[l+j-1] != data.charCodeAt(j)) continue outs;
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return l - 1;
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}
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} else {
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outb: while((l = u8.indexOf(data[0], l)) > -1) {
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++l;
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for(var j = 1; j < data.length; ++j) if(u8[l+j-1] != data[j]) continue outb;
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return l - 1;
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}
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}
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return -1;
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}
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export { u8indexOf };
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