1 files changed, 0 insertions, 158 deletions
diff --git a/works/life/computer-network-experiment/StringUtil.hpp b/works/life/computer-network-experiment/StringUtil.hpp
deleted file mode 100644
index b0ca675..0000000
--- a/works/life/computer-network-experiment/StringUtil.hpp
+++ /dev/null
@@ -1,158 +0,0 @@
-#pragma once
-#include "Base.hpp"
-
-#include <functional>
-#include <string>
-#include <string_view>
-
-namespace cru {
-using CodePoint = std::int32_t;
-constexpr CodePoint k_invalid_code_point = -1;
-
-class TextEncodeException : public std::runtime_error {
- public:
-  using runtime_error::runtime_error;
-};
-
-inline bool IsUtf16SurrogatePairCodeUnit(char16_t c) {
-  return c >= 0xD800 && c <= 0xDFFF;
-}
-
-inline bool IsUtf16SurrogatePairLeading(char16_t c) {
-  return c >= 0xD800 && c <= 0xDBFF;
-}
-
-inline bool IsUtf16SurrogatePairTrailing(char16_t c) {
-  return c >= 0xDC00 && c <= 0xDFFF;
-}
-
-CodePoint Utf8NextCodePoint(std::string_view str, Index current,
-                            Index* next_position);
-
-CodePoint Utf16NextCodePoint(std::u16string_view str, Index current,
-                             Index* next_position);
-CodePoint Utf16PreviousCodePoint(std::u16string_view str, Index current,
-                                 Index* previous_position);
-
-template <typename StringType>
-using NextCodePointFunctionType = CodePoint (*)(StringType, Index, Index*);
-
-template <typename StringType,
-          NextCodePointFunctionType<StringType> NextCodePointFunction>
-class CodePointIterator {
- public:
-  using difference_type = Index;
-  using value_type = CodePoint;
-  using pointer = void;
-  using reference = value_type;
-  using iterator_category = std::forward_iterator_tag;
-
- public:
-  struct past_end_tag_t {};
-
-  explicit CodePointIterator(StringType string)
-      : string_(std::move(string)), position_(0) {}
-  explicit CodePointIterator(StringType string, past_end_tag_t)
-      : string_(std::move(string)), position_(string_.size()) {}
-
-  CRU_DEFAULT_COPY(CodePointIterator)
-  CRU_DEFAULT_MOVE(CodePointIterator)
-
-  ~CodePointIterator() = default;
-
- public:
-  StringType GetString() const { return string_; }
-  Index GetPosition() const { return position_; }
-
-  bool IsPastEnd() const {
-    return position_ == static_cast<Index>(string_.size());
-  }
-
- public:
-  CodePointIterator begin() const { return *this; }
-  CodePointIterator end() const {
-    return CodePointIterator{string_, past_end_tag_t{}};
-  }
-
- public:
-  bool operator==(const CodePointIterator& other) const {
-    // You should compare iterator that iterate on the same string.
-    Expects(this->string_.data() == other.string_.data() &&
-            this->string_.size() == other.string_.size());
-    return this->position_ == other.position_;
-  }
-  bool operator!=(const CodePointIterator& other) const {
-    return !this->operator==(other);
-  }
-
-  CodePointIterator& operator++() {
-    Expects(!IsPastEnd());
-    Forward();
-    return *this;
-  }
-
-  CodePointIterator operator++(int) {
-    Expects(!IsPastEnd());
-    CodePointIterator old = *this;
-    Forward();
-    return old;
-  }
-
-  CodePoint operator*() const {
-    return NextCodePointFunction(string_, position_, &next_position_cache_);
-  }
-
- private:
-  void Forward() {
-    if (next_position_cache_ > position_) {
-      position_ = next_position_cache_;
-    } else {
-      NextCodePointFunction(string_, position_, &position_);
-    }
-  }
-
- private:
-  StringType string_;
-  Index position_;
-  mutable Index next_position_cache_;
-};
-
-using Utf8CodePointIterator =
-    CodePointIterator<std::string_view, &Utf8NextCodePoint>;
-
-using Utf16CodePointIterator =
-    CodePointIterator<std::u16string_view, &Utf16NextCodePoint>;
-
-void Utf8EncodeCodePointAppend(CodePoint code_point, std::string& str);
-void Utf16EncodeCodePointAppend(CodePoint code_point, std::u16string& str);
-
-std::string ToUtf8(std::u16string_view s);
-std::u16string ToUtf16(std::string_view s);
-
-#ifdef WIN32
-std::string ToUtf8(std::wstring_view s);
-std::wstring ToUtf16WString(std::string_view s);
-#endif
-
-// If given s is not a valid utf16 string, return value is UD.
-bool Utf16IsValidInsertPosition(std::u16string_view s, gsl::index position);
-
-// Return position after the character making predicate returns true or 0 if no
-// character doing so.
-gsl::index Utf16BackwardUntil(std::u16string_view str, gsl::index position,
-                              const std::function<bool(CodePoint)>& predicate);
-// Return position before the character making predicate returns true or
-// str.size() if no character doing so.
-gsl::index Utf16ForwardUntil(std::u16string_view str, gsl::index position,
-                             const std::function<bool(CodePoint)>& predicate);
-
-gsl::index Utf16PreviousWord(std::u16string_view str, gsl::index position,
-                             bool* is_space = nullptr);
-gsl::index Utf16NextWord(std::u16string_view str, gsl::index position,
-                         bool* is_space = nullptr);
-
-char16_t ToLower(char16_t c);
-char16_t ToUpper(char16_t c);
-std::u16string ToLower(std::u16string_view s);
-std::u16string ToUpper(std::u16string_view s);
-}  // namespace cru