Function validateFlagsAgainstAllowlist

src/tools/BashTool/sedValidation.ts:13–35

* Helper: Validate flags against an allowlist * Handles both single flags and combined flags (e.g., -nE) * @param flags Array of flags to validate * @param allowedFlags Array of allowed single-character and long flags * @returns true if all flags are valid, false otherwise

(
  flags: string[],
  allowedFlags: string[],
)

 * @returns true if all flags are valid, false otherwise
 */
function validateFlagsAgainstAllowlist(
  flags: string[],
  allowedFlags: string[],
): boolean {
  for (const flag of flags) {
    // Handle combined flags like -nE or -Er
    if (flag.startsWith('-') && !flag.startsWith('--') && flag.length > 2) {
      // Check each character in combined flag
      for (let i = 1; i < flag.length; i++) {
        const singleFlag = '-' + flag[i]
        if (!allowedFlags.includes(singleFlag)) {
          return false
        }
      }
    } else {
      // Single flag or long flag
      if (!allowedFlags.includes(flag)) {
        return false
      }
    }
  }
  return true
}

/**
 * Pattern 1: Check if this is a line printing command with -n flag