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Rewrite fileCopy

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See #68
This commit is contained in:
Alexander Batalov 2022-07-25 18:37:22 +03:00
parent a60382e044
commit 8a006d2818
1 changed files with 37 additions and 6 deletions
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43
src/file_utils.cc
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@ -8,7 +8,7 @@
#include <string.h>
#include <zlib.h>
#include <filesystem>
#include <vector>
// 0x452740
int fileCopyDecompressed(const char* existingFilePath, const char* newFilePath)
@ -155,9 +155,40 @@ void fileCopy(const char* existingFilePath, const char* newFilePath, bool overwr
strcpy(nativeNewFilePath, newFilePath);
compat_windows_path_to_native(nativeNewFilePath);
std::error_code ec;
std::filesystem::copy_options options = overwrite
? std::filesystem::copy_options::overwrite_existing
: std::filesystem::copy_options::none;
std::filesystem::copy_file(std::filesystem::path(nativeExistingFilePath), std::filesystem::path(nativeNewFilePath), options, ec);
char outMode[4];
outMode[0] = 'w';
outMode[1] = 'b';
if (!overwrite) {
outMode[2] = 'x';
}
FILE* in = fopen(nativeExistingFilePath, "rb");
FILE* out = fopen(nativeNewFilePath, outMode);
if (in != NULL && out != NULL) {
std::vector<unsigned char> buffer(0xFFFF);
size_t bytesRead;
while ((bytesRead = fread(buffer.data(), sizeof(*buffer.data()), buffer.size(), in)) > 0) {
size_t bytesWritten;
size_t offset = 0;
while ((bytesWritten = fwrite(buffer.data() + offset, sizeof(*buffer.data()), bytesRead, out)) > 0) {
bytesRead -= bytesWritten;
offset += bytesWritten;
}
if (bytesWritten < 0) {
bytesRead = -1;
break;
}
}
}
if (in != NULL) {
fclose(in);
}
if (out != NULL) {
fclose(out);
}
}