Organic Maps sources as of 02.04.2025 (fad26bbf22ac3da75e01e62aa01e5c8e11861005)

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coding/hex.cpp

@@ -0,0 +1,49 @@
+#include "coding/hex.hpp"
+
+#include "base/assert.hpp"
+
+
+namespace impl
+{
+  static const char kToHexTable[] = "0123456789ABCDEF";
+
+  void ToHexRaw(void const * src, size_t size, void * dst)
+  {
+    uint8_t const * ptr = static_cast<uint8_t const *>(src);
+    uint8_t const * end = ptr + size;
+    uint8_t * out = static_cast<uint8_t*>(dst);
+
+    while (ptr != end)
+    {
+      *out++ = kToHexTable[(*ptr) >> 4];
+      *out++ = kToHexTable[(*ptr) & 0xF];
+      ++ptr;
+    }
+  }
+
+  uint8_t HexDigitToRaw(uint8_t const digit)
+  {
+    if (digit >= '0' && digit <= '9')
+      return (digit - '0');
+    else if (digit >= 'A' && digit <= 'F')
+      return (digit - 'A' + 10);
+    else if (digit >= 'a' && digit <= 'f')
+      return (digit - 'a' + 10);
+    ASSERT(false, (digit));
+    return 0;
+  }
+
+  void FromHexRaw(void const * src, size_t size, void * dst)
+  {
+    uint8_t const * ptr = static_cast<uint8_t const *>(src);
+    uint8_t const * end = ptr + size;
+    uint8_t * out = static_cast<uint8_t*>(dst);
+
+    while (ptr < end)
+    {
+      *out = HexDigitToRaw(*ptr++) << 4;
+      *out |= HexDigitToRaw(*ptr++);
+      ++out;
+    }
+  }
+}