mirror of
https://github.com/google-gemini/gemini-cli.git
synced 2026-03-13 15:40:57 -07:00
695785c69d
Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com> Co-authored-by: Adib234 <30782825+Adib234@users.noreply.github.com> Co-authored-by: Jack Wotherspoon <jackwoth@google.com>
85 lines
2.3 KiB
TypeScript
85 lines
2.3 KiB
TypeScript
/**
|
|
* @license
|
|
* Copyright 2025 Google LLC
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
/**
|
|
* Safely replaces text with literal strings, avoiding ECMAScript GetSubstitution issues.
|
|
* Escapes $ characters to prevent template interpretation.
|
|
*/
|
|
export function safeLiteralReplace(
|
|
str: string,
|
|
oldString: string,
|
|
newString: string,
|
|
): string {
|
|
if (oldString === '' || !str.includes(oldString)) {
|
|
return str;
|
|
}
|
|
|
|
if (!newString.includes('$')) {
|
|
return str.replaceAll(oldString, newString);
|
|
}
|
|
|
|
const escapedNewString = newString.replaceAll('$', '$$$$');
|
|
return str.replaceAll(oldString, escapedNewString);
|
|
}
|
|
|
|
/**
|
|
* Checks if a Buffer is likely binary by testing for the presence of a NULL byte.
|
|
* The presence of a NULL byte is a strong indicator that the data is not plain text.
|
|
* @param data The Buffer to check.
|
|
* @param sampleSize The number of bytes from the start of the buffer to test.
|
|
* @returns True if a NULL byte is found, false otherwise.
|
|
*/
|
|
export function isBinary(
|
|
data: Buffer | null | undefined,
|
|
sampleSize = 512,
|
|
): boolean {
|
|
if (!data) {
|
|
return false;
|
|
}
|
|
|
|
const sample = data.length > sampleSize ? data.subarray(0, sampleSize) : data;
|
|
|
|
for (const byte of sample) {
|
|
// The presence of a NULL byte (0x00) is one of the most reliable
|
|
// indicators of a binary file. Text files should not contain them.
|
|
if (byte === 0) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
// If no NULL bytes were found in the sample, we assume it's text.
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Detects the line ending style of a string.
|
|
* @param content The string content to analyze.
|
|
* @returns '\r\n' for Windows-style, '\n' for Unix-style.
|
|
*/
|
|
export function detectLineEnding(content: string): '\r\n' | '\n' {
|
|
// If a Carriage Return is found, assume Windows-style endings.
|
|
// This is a simple but effective heuristic.
|
|
return content.includes('\r\n') ? '\r\n' : '\n';
|
|
}
|
|
|
|
/**
|
|
* Truncates a string to a maximum length, appending a suffix if truncated.
|
|
* @param str The string to truncate.
|
|
* @param maxLength The maximum length of the string.
|
|
* @param suffix The suffix to append if truncated (default: '...[TRUNCATED]').
|
|
* @returns The truncated string.
|
|
*/
|
|
export function truncateString(
|
|
str: string,
|
|
maxLength: number,
|
|
suffix = '...[TRUNCATED]',
|
|
): string {
|
|
if (str.length <= maxLength) {
|
|
return str;
|
|
}
|
|
return str.slice(0, maxLength) + suffix;
|
|
}
|