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File: Clean up directory_iterator construction, preserve pattern.

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FatFs requires pattern pointer to be stable during search.
This commit is contained in:
Jared Boone 2016-09-07 20:46:45 -07:00
parent 2740761ed7
commit 79330015ed
2 changed files with 9 additions and 7 deletions
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11
firmware/application/file.cpp
View File

@ -126,7 +126,7 @@ Optional<File::Error> File::sync() {
static std::filesystem::path find_last_file_matching_pattern(const std::filesystem::path& pattern) {
std::filesystem::path last_match;
for(const auto& entry : std::filesystem::directory_iterator(u"", pattern.c_str())) {
for(const auto& entry : std::filesystem::directory_iterator(u"", pattern)) {
if( std::filesystem::is_regular_file(entry.status()) ) {
const auto match = entry.path();
if( match > last_match ) {
@ -211,11 +211,12 @@ std::string filesystem_error::what() const {
}
directory_iterator::directory_iterator(
const std::filesystem::path::value_type* path,
const std::filesystem::path::value_type* wild
) {
std::filesystem::path path,
std::filesystem::path wild
) : pattern { wild }
{
impl = std::make_shared<Impl>();
const auto result = f_findfirst(&impl->dir, &impl->filinfo, reinterpret_cast<const TCHAR*>(path), reinterpret_cast<const TCHAR*>(wild));
const auto result = f_findfirst(&impl->dir, &impl->filinfo, reinterpret_cast<const TCHAR*>(path.c_str()), reinterpret_cast<const TCHAR*>(pattern.c_str()));
if( result != FR_OK ) {
impl.reset();
// TODO: Throw exception if/when I enable exceptions...

5
firmware/application/file.hpp
View File

@ -97,6 +97,7 @@ class directory_iterator {
};
std::shared_ptr<Impl> impl;
const path pattern;
friend bool operator!=(const directory_iterator& lhs, const directory_iterator& rhs);
@ -108,8 +109,8 @@ public:
using iterator_category = std::input_iterator_tag;
directory_iterator() noexcept { };
directory_iterator(const std::filesystem::path::value_type* path, const std::filesystem::path::value_type* wild);
directory_iterator(std::filesystem::path path, std::filesystem::path wild);
~directory_iterator() { }
directory_iterator& operator++();