( command: string, expressions: string[], )
| 42 | * @internal Exported for testing |
| 43 | */ |
| 44 | export function isLinePrintingCommand( |
| 45 | command: string, |
| 46 | expressions: string[], |
| 47 | ): boolean { |
| 48 | const sedMatch = command.match(/^\s*sed\s+/) |
| 49 | if (!sedMatch) return false |
| 50 | |
| 51 | const withoutSed = command.slice(sedMatch[0].length) |
| 52 | const parseResult = tryParseShellCommand(withoutSed) |
| 53 | if (!parseResult.success) return false |
| 54 | const parsed = parseResult.tokens |
| 55 | |
| 56 | // Extract all flags |
| 57 | const flags: string[] = [] |
| 58 | for (const arg of parsed) { |
| 59 | if (typeof arg === 'string' && arg.startsWith('-') && arg !== '--') { |
| 60 | flags.push(arg) |
| 61 | } |
| 62 | } |
| 63 | |
| 64 | // Validate flags - only allow -n, -E, -r, -z and their long forms |
| 65 | const allowedFlags = [ |
| 66 | '-n', |
| 67 | '--quiet', |
| 68 | '--silent', |
| 69 | '-E', |
| 70 | '--regexp-extended', |
| 71 | '-r', |
| 72 | '-z', |
| 73 | '--zero-terminated', |
| 74 | '--posix', |
| 75 | ] |
| 76 | |
| 77 | if (!validateFlagsAgainstAllowlist(flags, allowedFlags)) { |
| 78 | return false |
| 79 | } |
| 80 | |
| 81 | // Check if -n flag is present (required for Pattern 1) |
| 82 | let hasNFlag = false |
| 83 | for (const flag of flags) { |
| 84 | if (flag === '-n' || flag === '--quiet' || flag === '--silent') { |
| 85 | hasNFlag = true |
| 86 | break |
| 87 | } |
| 88 | // Check in combined flags |
| 89 | if (flag.startsWith('-') && !flag.startsWith('--') && flag.includes('n')) { |
| 90 | hasNFlag = true |
| 91 | break |
| 92 | } |
| 93 | } |
| 94 | |
| 95 | // Must have -n flag for Pattern 1 |
| 96 | if (!hasNFlag) { |
| 97 | return false |
| 98 | } |
| 99 | |
| 100 | // Must have at least one expression |
| 101 | if (expressions.length === 0) { |
no test coverage detected