diff --git a/src/common/string_util.cpp b/src/common/string_util.cpp
index 3dd73ac7e..88e636805 100644
--- a/src/common/string_util.cpp
+++ b/src/common/string_util.cpp
@@ -8,9 +8,7 @@
 #include "windows_headers.h"
 #endif
 
-namespace StringUtil {
-
-std::string StdStringFromFormat(const char* format, ...)
+std::string StringUtil::StdStringFromFormat(const char* format, ...)
 {
   std::va_list ap;
   va_start(ap, format);
@@ -19,7 +17,7 @@ std::string StdStringFromFormat(const char* format, ...)
   return ret;
 }
 
-std::string StdStringFromFormatV(const char* format, std::va_list ap)
+std::string StringUtil::StdStringFromFormatV(const char* format, std::va_list ap)
 {
   std::va_list ap_copy;
   va_copy(ap_copy, ap);
@@ -32,12 +30,18 @@ std::string StdStringFromFormatV(const char* format, std::va_list ap)
   va_end(ap_copy);
 
   std::string ret;
-  ret.resize(len);
-  std::vsnprintf(ret.data(), ret.size() + 1, format, ap);
+
+  // If an encoding error occurs, len is -1. Which we definitely don't want to resize to.
+  if (len > 0)
+  {
+    ret.resize(len);
+    std::vsnprintf(ret.data(), ret.size() + 1, format, ap);
+  }
+
   return ret;
 }
 
-bool WildcardMatch(const char* subject, const char* mask, bool case_sensitive /*= true*/)
+bool StringUtil::WildcardMatch(const char* subject, const char* mask, bool case_sensitive /*= true*/)
 {
   if (case_sensitive)
   {
@@ -133,7 +137,7 @@ bool WildcardMatch(const char* subject, const char* mask, bool case_sensitive /*
   }
 }
 
-std::size_t Strlcpy(char* dst, const char* src, std::size_t size)
+std::size_t StringUtil::Strlcpy(char* dst, const char* src, std::size_t size)
 {
   std::size_t len = std::strlen(src);
   if (len < size)
@@ -148,7 +152,7 @@ std::size_t Strlcpy(char* dst, const char* src, std::size_t size)
   return len;
 }
 
-std::size_t Strlcpy(char* dst, const std::string_view& src, std::size_t size)
+std::size_t StringUtil::Strlcpy(char* dst, const std::string_view& src, std::size_t size)
 {
   std::size_t len = src.length();
   if (len < size)
@@ -164,7 +168,7 @@ std::size_t Strlcpy(char* dst, const std::string_view& src, std::size_t size)
   return len;
 }
 
-std::optional<std::vector<u8>> DecodeHex(const std::string_view& in)
+std::optional<std::vector<u8>> StringUtil::DecodeHex(const std::string_view& in)
 {
   std::vector<u8> data;
   data.reserve(in.size() / 2);
@@ -181,18 +185,138 @@ std::optional<std::vector<u8>> DecodeHex(const std::string_view& in)
   return {data};
 }
 
-std::string EncodeHex(const u8* data, int length)
+std::string StringUtil::EncodeHex(const u8* data, int length)
 {
   std::stringstream ss;
   for (int i = 0; i < length; i++)
     ss << std::hex << std::setfill('0') << std::setw(2) << static_cast<int>(data[i]);
-  
+
   return ss.str();
 }
 
+std::string_view StringUtil::StripWhitespace(const std::string_view& str)
+{
+  std::string_view::size_type start = 0;
+  while (start < str.size() && std::isspace(str[start]))
+    start++;
+  if (start == str.size())
+    return {};
+
+  std::string_view::size_type end = str.size() - 1;
+  while (end > start && std::isspace(str[end]))
+    end--;
+
+  return str.substr(start, end - start + 1);
+}
+
+void StringUtil::StripWhitespace(std::string* str)
+{
+  {
+    const char* cstr = str->c_str();
+    std::string_view::size_type start = 0;
+    while (start < str->size() && std::isspace(cstr[start]))
+      start++;
+    if (start != 0)
+      str->erase(0, start);
+  }
+
+  {
+    const char* cstr = str->c_str();
+    std::string_view::size_type start = str->size();
+    while (start > 0 && std::isspace(cstr[start - 1]))
+      start--;
+    if (start != str->size())
+      str->erase(start);
+  }
+}
+
+std::vector<std::string_view> StringUtil::SplitString(const std::string_view& str, char delimiter,
+                                                      bool skip_empty /*= true*/)
+{
+  std::vector<std::string_view> res;
+  std::string_view::size_type last_pos = 0;
+  std::string_view::size_type pos;
+  while (last_pos < str.size() && (pos = str.find(delimiter, last_pos)) != std::string_view::npos)
+  {
+    std::string_view part(StripWhitespace(str.substr(last_pos, pos - last_pos)));
+    if (!skip_empty || !part.empty())
+      res.push_back(std::move(part));
+
+    last_pos = pos + 1;
+  }
+
+  if (last_pos < str.size())
+  {
+    std::string_view part(StripWhitespace(str.substr(last_pos)));
+    if (!skip_empty || !part.empty())
+      res.push_back(std::move(part));
+  }
+
+  return res;
+}
+
+std::string StringUtil::ReplaceAll(const std::string_view& subject, const std::string_view& search,
+                                   const std::string_view& replacement)
+{
+  std::string ret(subject);
+  ReplaceAll(&ret, search, replacement);
+  return ret;
+}
+
+void StringUtil::ReplaceAll(std::string* subject, const std::string_view& search, const std::string_view& replacement)
+{
+  if (!subject->empty())
+  {
+    std::string::size_type start_pos = 0;
+    while ((start_pos = subject->find(search, start_pos)) != std::string::npos)
+    {
+      subject->replace(start_pos, search.length(), replacement);
+      start_pos += replacement.length();
+    }
+  }
+}
+
+bool StringUtil::ParseAssignmentString(const std::string_view& str, std::string_view* key, std::string_view* value)
+{
+  const std::string_view::size_type pos = str.find('=');
+  if (pos == std::string_view::npos)
+  {
+    *key = std::string_view();
+    *value = std::string_view();
+    return false;
+  }
+
+  *key = StripWhitespace(str.substr(0, pos));
+  if (pos != (str.size() - 1))
+    *value = StripWhitespace(str.substr(pos + 1));
+  else
+    *value = std::string_view();
+
+  return true;
+}
+
+void StringUtil::AppendUTF16CharacterToUTF8(std::string& s, u16 ch)
+{
+  if (ch & 0xf800)
+  {
+    s.push_back(static_cast<char>(static_cast<u8>(0xe0 | static_cast<u8>(ch >> 12))));
+    s.push_back(static_cast<char>(static_cast<u8>(0x80 | static_cast<u8>(((ch >> 6) & 0x3f)))));
+    s.push_back(static_cast<char>(static_cast<u8>(0x80 | static_cast<u8>((ch & 0x3f)))));
+  }
+  else if (ch & 0xff80)
+  {
+    s.push_back(static_cast<char>(static_cast<u8>(0xc0 | static_cast<u8>((ch >> 6)))));
+    s.push_back(static_cast<char>(static_cast<u8>(0x80 | static_cast<u8>((ch & 0x3f)))));
+  }
+  else
+  {
+    s.push_back(static_cast<char>(static_cast<u8>(ch)));
+  }
+}
+
 #ifdef _WIN32
 
-std::wstring UTF8StringToWideString(const std::string_view& str)
+std::wstring StringUtil::UTF8StringToWideString(const std::string_view& str)
 {
   std::wstring ret;
   if (!UTF8StringToWideString(ret, str))
@@ -201,7 +325,7 @@ std::wstring UTF8StringToWideString(const std::string_view& str)
   return ret;
 }
 
-bool UTF8StringToWideString(std::wstring& dest, const std::string_view& str)
+bool StringUtil::UTF8StringToWideString(std::wstring& dest, const std::string_view& str)
 {
   int wlen = MultiByteToWideChar(CP_UTF8, 0, str.data(), static_cast<int>(str.length()), nullptr, 0);
   if (wlen < 0)
@@ -214,7 +338,7 @@ bool UTF8StringToWideString(std::wstring& dest, const std::string_view& str)
   return true;
 }
 
-std::string WideStringToUTF8String(const std::wstring_view& str)
+std::string StringUtil::WideStringToUTF8String(const std::wstring_view& str)
 {
   std::string ret;
   if (!WideStringToUTF8String(ret, str))
@@ -223,7 +347,7 @@ std::string WideStringToUTF8String(const std::wstring_view& str)
   return ret;
 }
 
-bool WideStringToUTF8String(std::string& dest, const std::wstring_view& str)
+bool StringUtil::WideStringToUTF8String(std::string& dest, const std::wstring_view& str)
 {
   int mblen = WideCharToMultiByte(CP_UTF8, 0, str.data(), static_cast<int>(str.length()), nullptr, 0, nullptr, nullptr);
   if (mblen < 0)
@@ -240,5 +364,3 @@ bool WideStringToUTF8String(std::string& dest, const std::wstring_view& str)
 }
 
 #endif
-
-} // namespace StringUtil
diff --git a/src/common/string_util.h b/src/common/string_util.h
index 5d96eca86..0ad086778 100644
--- a/src/common/string_util.h
+++ b/src/common/string_util.h
@@ -100,13 +100,15 @@ template<>
 inline std::optional<bool> FromChars(const std::string_view& str, int base)
 {
   if (Strncasecmp("true", str.data(), str.length()) == 0 || Strncasecmp("yes", str.data(), str.length()) == 0 ||
-      Strncasecmp("on", str.data(), str.length()) == 0 || Strncasecmp("1", str.data(), str.length()) == 0)
+      Strncasecmp("on", str.data(), str.length()) == 0 || Strncasecmp("1", str.data(), str.length()) == 0 ||
+      Strncasecmp("enabled", str.data(), str.length()) == 0 || Strncasecmp("1", str.data(), str.length()) == 0)
   {
     return true;
   }
 
   if (Strncasecmp("false", str.data(), str.length()) == 0 || Strncasecmp("no", str.data(), str.length()) == 0 ||
-      Strncasecmp("off", str.data(), str.length()) == 0 || Strncasecmp("0", str.data(), str.length()) == 0)
+      Strncasecmp("off", str.data(), str.length()) == 0 || Strncasecmp("0", str.data(), str.length()) == 0 ||
+      Strncasecmp("disabled", str.data(), str.length()) == 0 || Strncasecmp("0", str.data(), str.length()) == 0)
   {
     return false;
   }
@@ -119,20 +121,82 @@ std::optional<std::vector<u8>> DecodeHex(const std::string_view& str);
 std::string EncodeHex(const u8* data, int length);
 
 /// starts_with from C++20
-ALWAYS_INLINE static bool StartsWith(const std::string_view& str, const char* prefix)
+ALWAYS_INLINE static bool StartsWith(const std::string_view& str, const std::string_view& prefix)
 {
-  return (str.compare(0, std::strlen(prefix), prefix) == 0);
+  return (str.compare(0, prefix.length(), prefix) == 0);
 }
-ALWAYS_INLINE static bool EndsWith(const std::string_view& str, const char* suffix)
+ALWAYS_INLINE static bool EndsWith(const std::string_view& str, const std::string_view& suffix)
 {
-  const std::size_t suffix_length = std::strlen(suffix);
+  const std::size_t suffix_length = suffix.length();
   return (str.length() >= suffix_length && str.compare(str.length() - suffix_length, suffix_length, suffix) == 0);
 }
 
+/// StartsWith/EndsWith variants which aren't case sensitive.
+ALWAYS_INLINE static bool StartsWithNoCase(const std::string_view& str, const std::string_view& prefix)
+{
+  return (!str.empty() && Strncasecmp(str.data(), prefix.data(), prefix.length()) == 0);
+}
+ALWAYS_INLINE static bool EndsWithNoCase(const std::string_view& str, const std::string_view& suffix)
+{
+  const std::size_t suffix_length = suffix.length();
+  return (str.length() >= suffix_length &&
+          Strncasecmp(str.data() + (str.length() - suffix_length), suffix.data(), suffix_length) == 0);
+}
+
+/// Strip whitespace from the start/end of the string.
+std::string_view StripWhitespace(const std::string_view& str);
+void StripWhitespace(std::string* str);
+
+/// Splits a string based on a single character delimiter.
+std::vector<std::string_view> SplitString(const std::string_view& str, char delimiter, bool skip_empty = true);
+
+/// Joins a string together using the specified delimiter.
+template<typename T>
+static inline std::string JoinString(const T& start, const T& end, char delimiter)
+{
+  std::string ret;
+  for (auto it = start; it != end; ++it)
+  {
+    if (it != start)
+      ret += delimiter;
+    ret.append(*it);
+  }
+  return ret;
+}
+template<typename T>
+static inline std::string JoinString(const T& start, const T& end, const std::string_view& delimiter)
+{
+  std::string ret;
+  for (auto it = start; it != end; ++it)
+  {
+    if (it != start)
+      ret.append(delimiter);
+    ret.append(*it);
+  }
+  return ret;
+}
+
+/// Replaces all instances of search in subject with replacement.
+std::string ReplaceAll(const std::string_view& subject, const std::string_view& search,
+                       const std::string_view& replacement);
+void ReplaceAll(std::string* subject, const std::string_view& search, const std::string_view& replacement);
+
+/// Parses an assignment string (Key = Value) into its two components.
+bool ParseAssignmentString(const std::string_view& str, std::string_view* key, std::string_view* value);
+
+/// Appends a UTF-16/UTF-32 codepoint to a UTF-8 string.
+void AppendUTF16CharacterToUTF8(std::string& s, u16 ch);
+
 /// Strided memcpy/memcmp.
 ALWAYS_INLINE static void StrideMemCpy(void* dst, std::size_t dst_stride, const void* src, std::size_t src_stride,
                                        std::size_t copy_size, std::size_t count)
 {
+  if (src_stride == dst_stride && src_stride == copy_size)
+  {
+    std::memcpy(dst, src, src_stride * count);
+    return;
+  }
+
   const u8* src_ptr = static_cast<const u8*>(src);
   u8* dst_ptr = static_cast<u8*>(dst);
   for (std::size_t i = 0; i < count; i++)
@@ -146,6 +210,9 @@ ALWAYS_INLINE static void StrideMemCpy(void* dst, std::size_t dst_stride, const
 ALWAYS_INLINE static int StrideMemCmp(const void* p1, std::size_t p1_stride, const void* p2, std::size_t p2_stride,
                                       std::size_t copy_size, std::size_t count)
 {
+  if (p1_stride == p2_stride && p1_stride == copy_size)
+    return std::memcmp(p1, p2, p1_stride * count);
+
   const u8* p1_ptr = static_cast<const u8*>(p1);
   const u8* p2_ptr = static_cast<const u8*>(p2);
   for (std::size_t i = 0; i < count; i++)