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Fix Windows file case changing

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Windows APIs don't really provide a way to change a filename case. This
implements a little juggling to make this work. We first create a
guaranteed unique temporary file, we then replace the original file with
the temporary file and we finally rename it to the desired filename
case.

(cherry picked from commit d69d58deea)
This commit is contained in:
Hein-Pieter van Braam 2018-02-24 17:34:10 +01:00 • committed by Rémi Verschelde
parent bc4b7bc82e
commit 8cde69f5f2
1 changed files with 23 additions and 6 deletions
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29
drivers/windows/dir_access_windows.cpp
View file

@ -261,13 +261,30 @@ Error DirAccessWindows::rename(String p_path, String p_new_path) {
p_new_path = fix_path(p_new_path);
if (file_exists(p_new_path)) {
if (remove(p_new_path) != OK) {
return FAILED;
};
};
// If we're only changing file name case we need to do a little juggling
if (p_path.to_lower() == p_new_path.to_lower()) {
WCHAR tmpfile[MAX_PATH];
return ::_wrename(p_path.c_str(), p_new_path.c_str()) == 0 ? OK : FAILED;
if (!GetTempFileNameW(fix_path(get_current_dir()).c_str(), NULL, 0, tmpfile)) {
return FAILED;
}
if (!::ReplaceFileW(tmpfile, p_path.c_str(), NULL, 0, NULL, NULL)) {
DeleteFileW(tmpfile);
return FAILED;
}
return ::_wrename(tmpfile, p_new_path.c_str()) == 0 ? OK : FAILED;
} else {
if (file_exists(p_new_path)) {
if (remove(p_new_path) != OK) {
return FAILED;
}
}
return ::_wrename(p_path.c_str(), p_new_path.c_str()) == 0 ? OK : FAILED;
}
}
Error DirAccessWindows::remove(String p_path) {