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Improved trimming (#1458)

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* Add threshold UI
* WIP Better trimming
* Rewrite mostly done WIP
* WIP - trim idea
* WIP threshold trimming
* WIP with new design
* Cleanup
This commit is contained in:
Kyle Reed 2023-09-23 12:56:37 -07:00 • committed by GitHub
parent ef03f020ce
commit a6a1483083
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GPG key ID: 4AEE18F83AFDEB23
9 changed files with 417 additions and 210 deletions
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40
firmware/application/file.cpp
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@ -279,46 +279,6 @@ std::vector<std::filesystem::path> scan_root_directories(const std::filesystem::
return directory_list;
}
std::filesystem::filesystem_error trim_file(const std::filesystem::path& file_path, uint64_t start, uint64_t length) {
constexpr size_t buffer_size = std::filesystem::max_file_block_size;
uint8_t buffer[buffer_size];
auto temp_path = file_path + u"-tmp";
/* Scope for File instances. */
{
File src;
File dst;
auto error = src.open(file_path);
if (error) return error.value();
error = dst.create(temp_path);
if (error) return error.value();
src.seek(start);
auto remaining = length;
while (true) {
auto result = src.read(buffer, buffer_size);
if (result.is_error()) return result.error();
auto to_write = std::min(remaining, *result);
result = dst.write(buffer, to_write);
if (result.is_error()) return result.error();
remaining -= *result;
if (*result < buffer_size || remaining == 0)
break;
}
}
// Delete original and overwrite with temp file.
delete_file(file_path);
return rename_file(temp_path, file_path);
}
std::filesystem::filesystem_error delete_file(const std::filesystem::path& file_path) {
return {f_unlink(reinterpret_cast<const TCHAR*>(file_path.c_str()))};
}