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author | Zach Hilman <DarkLordZach@users.noreply.github.com> | 2018-07-19 03:07:11 +0200 |
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committer | bunnei <bunneidev@gmail.com> | 2018-07-19 03:07:11 +0200 |
commit | 29aff8d5ab46c8d0199aa4bfa7eeff5d4fa2d7ef (patch) | |
tree | 3202e2ce55ab6387a4ca366a509eccdd963434c3 /src/common/file_util.h | |
parent | Merge pull request #683 from DarkLordZach/touch (diff) | |
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Diffstat (limited to '')
-rw-r--r-- | src/common/file_util.h | 66 |
1 files changed, 35 insertions, 31 deletions
diff --git a/src/common/file_util.h b/src/common/file_util.h index 5bc7fbf7c..026c84d94 100644 --- a/src/common/file_util.h +++ b/src/common/file_util.h @@ -150,6 +150,34 @@ size_t ReadFileToString(bool text_file, const char* filename, std::string& str); void SplitFilename83(const std::string& filename, std::array<char, 9>& short_name, std::array<char, 4>& extension); +// Splits the path on '/' or '\' and put the components into a vector +// i.e. "C:\Users\Yuzu\Documents\save.bin" becomes {"C:", "Users", "Yuzu", "Documents", "save.bin" } +std::vector<std::string> SplitPathComponents(const std::string& filename); + +// Gets all of the text up to the last '/' or '\' in the path. +std::string GetParentPath(const std::string& path); + +// Gets all of the text after the first '/' or '\' in the path. +std::string GetPathWithoutTop(std::string path); + +// Gets the filename of the path +std::string GetFilename(std::string path); + +// Gets the extension of the filename +std::string GetExtensionFromFilename(const std::string& name); + +// Removes the final '/' or '\' if one exists +std::string RemoveTrailingSlash(const std::string& path); + +// Creates a new vector containing indices [first, last) from the original. +template <typename T> +std::vector<T> SliceVector(const std::vector<T>& vector, size_t first, size_t last) { + if (first >= last) + return {}; + last = std::min<size_t>(last, vector.size()); + return std::vector<T>(vector.begin() + first, vector.begin() + first + last); +} + // simple wrapper for cstdlib file functions to // hopefully will make error checking easier // and make forgetting an fclose() harder @@ -172,41 +200,27 @@ public: bool Close(); template <typename T> - size_t ReadArray(T* data, size_t length) { + size_t ReadArray(T* data, size_t length) const { static_assert(std::is_trivially_copyable<T>(), "Given array does not consist of trivially copyable objects"); - if (!IsOpen()) { - m_good = false; + if (!IsOpen()) return -1; - } - - size_t items_read = std::fread(data, sizeof(T), length, m_file); - if (items_read != length) - m_good = false; - return items_read; + return std::fread(data, sizeof(T), length, m_file); } template <typename T> size_t WriteArray(const T* data, size_t length) { static_assert(std::is_trivially_copyable<T>(), "Given array does not consist of trivially copyable objects"); - - if (!IsOpen()) { - m_good = false; + if (!IsOpen()) return -1; - } - - size_t items_written = std::fwrite(data, sizeof(T), length, m_file); - if (items_written != length) - m_good = false; - - return items_written; + return std::fwrite(data, sizeof(T), length, m_file); } template <typename T> - size_t ReadBytes(T* data, size_t length) { + size_t ReadBytes(T* data, size_t length) const { static_assert(std::is_trivially_copyable<T>(), "T must be trivially copyable"); return ReadArray(reinterpret_cast<char*>(data), length); } @@ -231,15 +245,7 @@ public: return nullptr != m_file; } - // m_good is set to false when a read, write or other function fails - bool IsGood() const { - return m_good; - } - explicit operator bool() const { - return IsGood(); - } - - bool Seek(s64 off, int origin); + bool Seek(s64 off, int origin) const; u64 Tell() const; u64 GetSize() const; bool Resize(u64 size); @@ -247,13 +253,11 @@ public: // clear error state void Clear() { - m_good = true; std::clearerr(m_file); } private: std::FILE* m_file = nullptr; - bool m_good = true; }; } // namespace FileUtil |