| 341 | } |
| 342 | |
| 343 | std::string AbsolutePath(const std::string &filepath) { |
| 344 | // clang-format off |
| 345 | |
| 346 | #ifdef FLATBUFFERS_NO_ABSOLUTE_PATH_RESOLUTION |
| 347 | return filepath; |
| 348 | #else |
| 349 | #if defined(_WIN32) || defined(__MINGW32__) || defined(__MINGW64__) || defined(__CYGWIN__) |
| 350 | char abs_path[MAX_PATH]; |
| 351 | return GetFullPathNameA(filepath.c_str(), MAX_PATH, abs_path, nullptr) |
| 352 | #else |
| 353 | char *abs_path_temp = realpath(filepath.c_str(), nullptr); |
| 354 | bool success = abs_path_temp != nullptr; |
| 355 | std::string abs_path; |
| 356 | if(success) { |
| 357 | abs_path = abs_path_temp; |
| 358 | free(abs_path_temp); |
| 359 | } |
| 360 | return success |
| 361 | #endif |
| 362 | ? abs_path |
| 363 | : filepath; |
| 364 | #endif // FLATBUFFERS_NO_ABSOLUTE_PATH_RESOLUTION |
| 365 | // clang-format on |
| 366 | } |
| 367 | |
| 368 | std::string RelativeToRootPath(const std::string &project, |
| 369 | const std::string &filepath) { |
| 370 | std::string absolute_project = PosixPath(AbsolutePath(project)); |
| 371 | if (absolute_project.back() != '/') absolute_project += "/"; |
| 372 | std::string absolute_filepath = PosixPath(AbsolutePath(filepath)); |
| 373 | |
| 374 | // Find the first character where they disagree. |
| 375 | // The previous directory is the lowest common ancestor; |
| 376 | const char *a = absolute_project.c_str(); |
| 377 | const char *b = absolute_filepath.c_str(); |
| 378 | size_t common_prefix_len = 0; |
| 379 | while (*a != '\0' && *b != '\0' && *a == *b) { |
| 380 | if (*a == '/') common_prefix_len = a - absolute_project.c_str(); |
| 381 | a++; |
| 382 | b++; |
| 383 | } |
| 384 | // the number of ../ to prepend to b depends on the number of remaining |
| 385 | // directories in A. |
| 386 | const char *suffix = absolute_project.c_str() + common_prefix_len; |
| 387 | size_t num_up = 0; |
| 388 | while (*suffix != '\0') |
| 389 | if (*suffix++ == '/') num_up++; |
| 390 | num_up--; // last one is known to be '/'. |
| 391 | std::string result = "//"; |
| 392 | for (size_t i = 0; i < num_up; i++) result += "../"; |
| 393 | result += absolute_filepath.substr(common_prefix_len + 1); |
| 394 | |
| 395 | return result; |
| 396 | } |
| 397 | |
| 398 | // Locale-independent code. |
| 399 | #if defined(FLATBUFFERS_LOCALE_INDEPENDENT) && \ |
| 400 | (FLATBUFFERS_LOCALE_INDEPENDENT > 0) |