| 427 | type Comparator = (a: string, b: string) => boolean |
| 428 | |
| 429 | function tryMatch(lines: string[], pattern: string[], startIndex: number, compare: Comparator, eof: boolean): number { |
| 430 | // If EOF anchor, try matching from end of file first |
| 431 | if (eof) { |
| 432 | const fromEnd = lines.length - pattern.length |
| 433 | if (fromEnd >= startIndex) { |
| 434 | let matches = true |
| 435 | for (let j = 0; j < pattern.length; j++) { |
| 436 | if (!compare(lines[fromEnd + j], pattern[j])) { |
| 437 | matches = false |
| 438 | break |
| 439 | } |
| 440 | } |
| 441 | if (matches) return fromEnd |
| 442 | } |
| 443 | } |
| 444 | |
| 445 | // Forward search from startIndex |
| 446 | for (let i = startIndex; i <= lines.length - pattern.length; i++) { |
| 447 | let matches = true |
| 448 | for (let j = 0; j < pattern.length; j++) { |
| 449 | if (!compare(lines[i + j], pattern[j])) { |
| 450 | matches = false |
| 451 | break |
| 452 | } |
| 453 | } |
| 454 | if (matches) return i |
| 455 | } |
| 456 | |
| 457 | return -1 |
| 458 | } |
| 459 | |
| 460 | function seekSequence(lines: string[], pattern: string[], startIndex: number, eof = false): number { |
| 461 | if (pattern.length === 0) return -1 |