mirror of
https://github.com/google-gemini/gemini-cli.git
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56 lines
1.5 KiB
TypeScript
56 lines
1.5 KiB
TypeScript
/**
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* @license
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* Copyright 2025 Google LLC
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* Safely replaces text with literal strings, avoiding ECMAScript GetSubstitution issues.
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* Escapes $ characters to prevent template interpretation.
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*/
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export function safeLiteralReplace(
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str: string,
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oldString: string,
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newString: string,
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): string {
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if (oldString === '' || !str.includes(oldString)) {
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return str;
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}
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if (!newString.includes('$')) {
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return str.replaceAll(oldString, newString);
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}
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const escapedNewString = newString.replaceAll('$', '$$$$');
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return str.replaceAll(oldString, escapedNewString);
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}
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/**
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* Checks if a Buffer is likely binary by testing for the presence of a NULL byte.
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* The presence of a NULL byte is a strong indicator that the data is not plain text.
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* @param data The Buffer to check.
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* @param sampleSize The number of bytes from the start of the buffer to test.
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* @returns True if a NULL byte is found, false otherwise.
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*/
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export function isBinary(
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data: Buffer | null | undefined,
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sampleSize = 512,
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): boolean {
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if (!data) {
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return false;
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}
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const sample = data.length > sampleSize ? data.subarray(0, sampleSize) : data;
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for (const byte of sample) {
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// The presence of a NULL byte (0x00) is one of the most reliable
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// indicators of a binary file. Text files should not contain them.
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if (byte === 0) {
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return true;
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}
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}
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// If no NULL bytes were found in the sample, we assume it's text.
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return false;
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}
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