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FS: Support the file Append open mode.

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This commit is contained in:
Subv 2018-03-19 22:57:34 -05:00
parent 808704c78c
commit fc44261dd1
2 changed files with 23 additions and 2 deletions
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24
src/core/file_sys/disk_filesystem.cpp
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@ -17,10 +17,30 @@ std::string Disk_FileSystem::GetName() const {
ResultVal<std::unique_ptr<StorageBackend>> Disk_FileSystem::OpenFile(const std::string& path, ResultVal<std::unique_ptr<StorageBackend>> Disk_FileSystem::OpenFile(const std::string& path,
Mode mode) const { Mode mode) const {
ASSERT_MSG(mode == Mode::Read || mode == Mode::Write, "Other file modes are not supported");
std::string mode_str = "";
u32 mode_flags = static_cast<u32>(mode);
// Calculate the correct open mode for the file.
if ((mode_flags & static_cast<u32>(Mode::Read)) &&
(mode_flags & static_cast<u32>(Mode::Write))) {
if (mode_flags & static_cast<u32>(Mode::Append))
mode_str = "a+";
else
mode_str = "r+";
} else {
if (mode_flags & static_cast<u32>(Mode::Read))
mode_str = "r";
else if (mode_flags & static_cast<u32>(Mode::Append))
mode_str = "a";
else if (mode_flags & static_cast<u32>(Mode::Write))
mode_str = "w";
}
mode_str += "b";
std::string full_path = base_directory + path; std::string full_path = base_directory + path;
auto file = std::make_shared<FileUtil::IOFile>(full_path, mode == Mode::Read ? "rb" : "wb"); auto file = std::make_shared<FileUtil::IOFile>(full_path, mode_str.c_str());
if (!file->IsOpen()) { if (!file->IsOpen()) {
return ERROR_PATH_NOT_FOUND; return ERROR_PATH_NOT_FOUND;

1
src/core/file_sys/filesystem.h
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@ -35,6 +35,7 @@ enum EntryType : u32 {
enum class Mode : u32 { enum class Mode : u32 {
Read = 1, Read = 1,
Write = 2, Write = 2,
Append = 4,
}; };
class Path { class Path {