| 373 | } |
| 374 | |
| 375 | void CheckedFile::write( const char *buf, size_t nWrite ) |
| 376 | { |
| 377 | #ifdef E57_VERBOSE |
| 378 | // cout << "write nWrite=" << nWrite << " position()="<< position() << std::endl; |
| 379 | // //??? |
| 380 | #endif |
| 381 | if ( readOnly_ ) |
| 382 | { |
| 383 | throw E57_EXCEPTION2( ErrorFileReadOnly, "fileName=" + fileName_ ); |
| 384 | } |
| 385 | |
| 386 | uint64_t end = position( Logical ) + nWrite; |
| 387 | |
| 388 | uint64_t page = 0; |
| 389 | size_t pageOffset = 0; |
| 390 | |
| 391 | getCurrentPageAndOffset( page, pageOffset ); |
| 392 | |
| 393 | size_t n = std::min( nWrite, logicalPageSize - pageOffset ); |
| 394 | |
| 395 | // Allocate temp page buffer |
| 396 | std::vector<char> page_buffer_v( physicalPageSize ); |
| 397 | char *page_buffer = page_buffer_v.data(); |
| 398 | |
| 399 | while ( nWrite > 0 ) |
| 400 | { |
| 401 | const uint64_t physicalLength = length( Physical ); |
| 402 | |
| 403 | if ( page * physicalPageSize < physicalLength ) |
| 404 | { |
| 405 | readPhysicalPage( page_buffer, page ); |
| 406 | } |
| 407 | |
| 408 | #ifdef E57_VERBOSE |
| 409 | // cout << " page_buffer[0] read: '" << page_buffer[0] << "'" << std::endl; |
| 410 | // cout << "copy " << n << "bytes to page=" << page << " pageOffset=" << |
| 411 | // pageOffset << " buf='"; //??? for (size_t i=0; i < n; i++) cout << |
| 412 | // buf[i]; cout << "'" << std::endl; |
| 413 | #endif |
| 414 | memcpy( page_buffer + pageOffset, buf, n ); |
| 415 | writePhysicalPage( page_buffer, page ); |
| 416 | #ifdef E57_VERBOSE |
| 417 | // cout << " page_buffer[0] after write: '" << page_buffer[0] << "'" << |
| 418 | // std::endl; //??? |
| 419 | #endif |
| 420 | buf += n; |
| 421 | nWrite -= n; |
| 422 | pageOffset = 0; |
| 423 | page++; |
| 424 | n = std::min( nWrite, logicalPageSize ); |
| 425 | } |
| 426 | |
| 427 | if ( end > logicalLength_ ) |
| 428 | { |
| 429 | logicalLength_ = end; |
| 430 | } |
| 431 | |
| 432 | // When done, leave cursor just past end of buf |