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-rw-r--r--src/common/file_util.cpp107
-rw-r--r--src/common/file_util.h66
2 files changed, 116 insertions, 57 deletions
diff --git a/src/common/file_util.cpp b/src/common/file_util.cpp
index 7213abe18..bf955386c 100644
--- a/src/common/file_util.cpp
+++ b/src/common/file_util.cpp
@@ -2,6 +2,7 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
+#include <sstream>
#include "common/assert.h"
#include "common/common_funcs.h"
#include "common/common_paths.h"
@@ -386,7 +387,7 @@ u64 GetSize(FILE* f) {
bool CreateEmptyFile(const std::string& filename) {
LOG_TRACE(Common_Filesystem, "{}", filename);
- if (!FileUtil::IOFile(filename, "wb")) {
+ if (!FileUtil::IOFile(filename, "wb").IsOpen()) {
LOG_ERROR(Common_Filesystem, "failed {}: {}", filename, GetLastErrorMsg());
return false;
}
@@ -750,7 +751,7 @@ size_t WriteStringToFile(bool text_file, const std::string& str, const char* fil
size_t ReadFileToString(bool text_file, const char* filename, std::string& str) {
IOFile file(filename, text_file ? "r" : "rb");
- if (!file)
+ if (!file.IsOpen())
return false;
str.resize(static_cast<u32>(file.GetSize()));
@@ -799,6 +800,71 @@ void SplitFilename83(const std::string& filename, std::array<char, 9>& short_nam
}
}
+std::vector<std::string> SplitPathComponents(const std::string& filename) {
+ auto copy(filename);
+ std::replace(copy.begin(), copy.end(), '\\', '/');
+ std::vector<std::string> out;
+
+ std::stringstream stream(filename);
+ std::string item;
+ while (std::getline(stream, item, '/'))
+ out.push_back(std::move(item));
+
+ return out;
+}
+
+std::string GetParentPath(const std::string& path) {
+ auto out = path;
+ const auto name_bck_index = out.find_last_of('\\');
+ const auto name_fwd_index = out.find_last_of('/');
+ size_t name_index;
+ if (name_bck_index == std::string::npos || name_fwd_index == std::string::npos)
+ name_index = std::min<size_t>(name_bck_index, name_fwd_index);
+ else
+ name_index = std::max<size_t>(name_bck_index, name_fwd_index);
+
+ return out.erase(name_index);
+}
+
+std::string GetPathWithoutTop(std::string path) {
+ if (path.empty())
+ return "";
+ while (path[0] == '\\' || path[0] == '/') {
+ path = path.substr(1);
+ if (path.empty())
+ return "";
+ }
+ const auto name_bck_index = path.find_first_of('\\');
+ const auto name_fwd_index = path.find_first_of('/');
+ return path.substr(std::min<size_t>(name_bck_index, name_fwd_index) + 1);
+ return path.substr(std::min<size_t>(name_bck_index, name_fwd_index) + 1);
+}
+
+std::string GetFilename(std::string path) {
+ std::replace(path.begin(), path.end(), '\\', '/');
+ auto name_index = path.find_last_of('/');
+ if (name_index == std::string::npos)
+ return "";
+ return path.substr(name_index + 1);
+}
+
+std::string GetExtensionFromFilename(const std::string& name) {
+ size_t index = name.find_last_of('.');
+ if (index == std::string::npos)
+ return "";
+
+ return name.substr(index + 1);
+}
+
+std::string RemoveTrailingSlash(const std::string& path) {
+ if (path.empty())
+ return path;
+ if (path.back() == '\\' || path.back() == '/')
+ return path.substr(0, path.size() - 1);
+
+ return path;
+}
+
IOFile::IOFile() {}
IOFile::IOFile(const std::string& filename, const char openmode[], int flags) {
@@ -820,7 +886,6 @@ IOFile& IOFile::operator=(IOFile&& other) noexcept {
void IOFile::Swap(IOFile& other) noexcept {
std::swap(m_file, other.m_file);
- std::swap(m_good, other.m_good);
}
bool IOFile::Open(const std::string& filename, const char openmode[], int flags) {
@@ -837,16 +902,15 @@ bool IOFile::Open(const std::string& filename, const char openmode[], int flags)
m_file = fopen(filename.c_str(), openmode);
#endif
- m_good = IsOpen();
- return m_good;
+ return IsOpen();
}
bool IOFile::Close() {
if (!IsOpen() || 0 != std::fclose(m_file))
- m_good = false;
+ return false;
m_file = nullptr;
- return m_good;
+ return true;
}
u64 IOFile::GetSize() const {
@@ -856,11 +920,8 @@ u64 IOFile::GetSize() const {
return 0;
}
-bool IOFile::Seek(s64 off, int origin) {
- if (!IsOpen() || 0 != fseeko(m_file, off, origin))
- m_good = false;
-
- return m_good;
+bool IOFile::Seek(s64 off, int origin) const {
+ return IsOpen() && 0 == fseeko(m_file, off, origin);
}
u64 IOFile::Tell() const {
@@ -871,26 +932,20 @@ u64 IOFile::Tell() const {
}
bool IOFile::Flush() {
- if (!IsOpen() || 0 != std::fflush(m_file))
- m_good = false;
-
- return m_good;
+ return IsOpen() && 0 == std::fflush(m_file);
}
bool IOFile::Resize(u64 size) {
- if (!IsOpen() || 0 !=
+ return IsOpen() && 0 ==
#ifdef _WIN32
- // ector: _chsize sucks, not 64-bit safe
- // F|RES: changed to _chsize_s. i think it is 64-bit safe
- _chsize_s(_fileno(m_file), size)
+ // ector: _chsize sucks, not 64-bit safe
+ // F|RES: changed to _chsize_s. i think it is 64-bit safe
+ _chsize_s(_fileno(m_file), size)
#else
- // TODO: handle 64bit and growing
- ftruncate(fileno(m_file), size)
+ // TODO: handle 64bit and growing
+ ftruncate(fileno(m_file), size)
#endif
- )
- m_good = false;
-
- return m_good;
+ ;
}
} // namespace FileUtil
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
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-21 23:28:34 +0100