fix more of /fs, introduce core/hle and probably fix REM soon

common/string_util.h

@@ -0,0 +1,82 @@
+// SPDX-FileCopyrightText: 2013 Dolphin Emulator Project
+// SPDX-FileCopyrightText: 2014 Citra Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <cstddef>
+#include <span>
+#include <string>
+#include <vector>
+#include "common_types.h"
+
+namespace Common {
+
+/// Make a string lowercase
+[[nodiscard]] std::string ToLower(std::string str);
+
+/// Make a string uppercase
+[[nodiscard]] std::string ToUpper(std::string str);
+
+[[nodiscard]] std::string StringFromBuffer(std::span<const u8> data);
+[[nodiscard]] std::string StringFromBuffer(std::span<const char> data);
+
+[[nodiscard]] std::string StripSpaces(const std::string& s);
+[[nodiscard]] std::string StripQuotes(const std::string& s);
+
+[[nodiscard]] std::string StringFromBool(bool value);
+
+[[nodiscard]] std::string TabsToSpaces(int tab_size, std::string in);
+
+void SplitString(const std::string& str, char delim, std::vector<std::string>& output);
+
+// "C:/Windows/winhelp.exe" to "C:/Windows/", "winhelp", ".exe"
+bool SplitPath(const std::string& full_path, std::string* _pPath, std::string* _pFilename,
+               std::string* _pExtension);
+
+[[nodiscard]] std::string ReplaceAll(std::string result, const std::string& src,
+                                     const std::string& dest);
+
+[[nodiscard]] std::string UTF16ToUTF8(std::u16string_view input);
+[[nodiscard]] std::u16string UTF8ToUTF16(std::string_view input);
+[[nodiscard]] std::u32string UTF8ToUTF32(std::string_view input);
+
+#ifdef _WIN32
+[[nodiscard]] std::string UTF16ToUTF8(std::wstring_view input);
+[[nodiscard]] std::wstring UTF8ToUTF16W(std::string_view str);
+
+#endif
+
+[[nodiscard]] std::u16string U16StringFromBuffer(const u16* input, std::size_t length);
+
+/**
+ * Compares the string defined by the range [`begin`, `end`) to the null-terminated C-string
+ * `other` for equality.
+ */
+template <typename InIt>
+[[nodiscard]] bool ComparePartialString(InIt begin, InIt end, const char* other) {
+    for (; begin != end && *other != '\0'; ++begin, ++other) {
+        if (*begin != *other) {
+            return false;
+        }
+    }
+    // Only return true if both strings finished at the same point
+    return (begin == end) == (*other == '\0');
+}
+
+/**
+ * Creates a std::string from a fixed-size NUL-terminated char buffer. If the buffer isn't
+ * NUL-terminated then the string ends at max_len characters.
+ */
+[[nodiscard]] std::string StringFromFixedZeroTerminatedBuffer(std::string_view buffer,
+                                                              std::size_t max_len);
+
+/**
+ * Creates a UTF-16 std::u16string from a fixed-size NUL-terminated char buffer. If the buffer isn't
+ * null-terminated, then the string ends at the greatest multiple of two less then or equal to
+ * max_len_bytes.
+ */
+[[nodiscard]] std::u16string UTF16StringFromFixedZeroTerminatedBuffer(std::u16string_view buffer,
+                                                                      std::size_t max_len);
+
+} // namespace Common