From fe7618dfcb40ee497528d73ba5a80216ee917771 Mon Sep 17 00:00:00 2001
From: Xnoe <xnoe@xnoe.moe>
Date: Tue, 7 Jul 2020 21:34:42 +0100
Subject: [PATCH] Initial Commit.

---
 utf8.h | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 utf8.h

diff --git a/utf8.h b/utf8.h
new file mode 100644
index 0000000..e1049b1
--- /dev/null
+++ b/utf8.h
@@ -0,0 +1,49 @@
+#include <iostream>
+#include <string>
+#include <cstdio>
+#include <vector>
+
+class char32 {
+  unsigned int fetch32(char** cstr) {
+    unsigned int r(0);
+    int i(1);
+    unsigned char compare = (unsigned char)**cstr;
+    if (compare >> 3 == 0b11110) i = 4;
+    if (compare >> 4 == 0b1110) i = 3;
+    if (compare >> 5 == 0b110) i = 2;
+    for (;i>0;i--) {
+      r <<= 8;
+      r += (unsigned char)**cstr;
+      (*cstr)++;
+    }
+    return r;
+  }
+public:
+  unsigned int c;
+  char32(unsigned int i) {c = i;}
+  char32(const char* s) {c = fetch32((char**)&s);}
+  char32(char** s) {c = fetch32(s);}
+  bool operator==(char* cs) {return c==fetch32(&cs);}
+  unsigned int operator>>(int a) const {return c>>a;}
+};
+
+std::ostream& operator<<(std::ostream& stream, const char32& c32) {
+  stream << (char)(c32>>24) << (char)(c32>>16) << (char)(c32>>8) << (char)c32.c;
+  return stream;
+}
+
+struct string32 {
+  std::vector<char32> cs;
+  string32(char* sd) {
+    while (sd[0])
+     cs.push_back(char32(&sd));
+  }
+  int size() const {return cs.size();}
+  char32 operator[](int i) const {return cs[i];}
+};
+
+std::ostream& operator<<(std::ostream& stream, const string32& s32) {
+  for (int i=0;i<s32.size();i++)
+    stream << s32[i];
+  return stream;
+}