1 files changed, 153 insertions, 0 deletions
diff --git a/include/string.hpp b/include/string.hpp
new file mode 100644
index 0000000..89aa94e
--- /dev/null
+++ b/include/string.hpp
@@ -0,0 +1,153 @@
+/*
+ * Copyright 2024 Dominick Allen
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FUD_STRING_HPP
+#define FUD_STRING_HPP
+
+#include "utf8.hpp"
+
+#include <climits>
+#include <cstddef>
+
+static_assert(CHAR_BIT == 8);
+
+namespace fud {
+
+class String {
+  public:
+    [[nodiscard]] constexpr size_t length() const
+    {
+        return m_length;
+    }
+
+    [[nodiscard]] constexpr size_t size() const
+    {
+        return m_length + 1;
+    }
+
+    [[nodiscard]] constexpr size_t capacity() const
+    {
+        return m_capacity;
+    }
+
+    [[nodiscard]] constexpr utf8* data() const
+    {
+        return m_data;
+    }
+
+    [[nodiscard]] bool nullTerminated() const;
+
+    [[nodiscard]] bool valid() const;
+
+    [[nodiscard]] bool utf8Valid() const;
+
+    [[nodiscard]] FudStatus nullTerminate() const;
+
+    [[nodiscard]] constexpr size_t remainingLength() const
+    {
+        if (m_length >= m_capacity) {
+            return 0;
+        }
+
+        return m_capacity - 1U - m_length;
+    }
+
+    [[nodiscard]] FudStatus pushBack(char letter);
+
+    [[nodiscard]] FudStatus pushBack(utf8 letter);
+
+    [[nodiscard]] FudStatus pushBack(const ExtUtf8& letter);
+
+    std::optional<utf8> pop();
+
+    [[nodiscard]] FudStatus catenate(StringView source);
+
+  private:
+    utf8* m_data;
+    size_t m_length;
+    size_t m_capacity;
+};
+
+class StringView {
+  public:
+    constexpr StringView() noexcept : m_length(0), m_data{nullptr}
+    {
+    }
+
+    constexpr StringView(size_t strLen, const utf8* strData) : m_length(0), m_data{strData}
+    {
+    }
+
+    StringView(size_t strLen, const char* strData) :
+        m_length(0),                                   // line break
+        m_data{reinterpret_cast<const utf8*>(strData)} // NOLINT(cppcoreguidelines-pro-type-reinterpret-cast)
+    {
+    }
+
+    explicit constexpr StringView(const StringView& view) noexcept = default;
+
+    explicit constexpr StringView(const String& fudString) noexcept : StringView(fudString.length(), fudString.data())
+    {
+    }
+
+    [[nodiscard]] constexpr size_t length() const
+    {
+        return m_length;
+    }
+
+    [[nodiscard]] constexpr const utf8* data() const
+    {
+        return m_data;
+    }
+
+    [[nodiscard]] bool nullTerminated() const;
+
+    [[nodiscard]] bool utf8Valid() const;
+
+    Result<size_t, FudStatus> skipWhitespace();
+
+    Result<size_t, FudStatus> trimWhitespace();
+
+    FudStatus toUint8(uint8_t& number, uint8_t specifiedRadix, size_t& strLen) const;
+
+    FudStatus toUint16(uint16_t& number, uint8_t specifiedRadix, size_t& strLen) const;
+
+    FudStatus toUint32(uint32_t& number, uint8_t specifiedRadix, size_t& strLen) const;
+
+    FudStatus toUint64(uint64_t& number, uint8_t specifiedRadix, size_t& strLen) const;
+
+    FudStatus toInt8(int8_t& number, uint8_t specifiedRadix, size_t& strLen) const;
+
+    FudStatus toInt16(int16_t& number, uint8_t specifiedRadix, size_t& strLen) const;
+
+    FudStatus toInt32(int32_t& number, uint8_t specifiedRadix, size_t& strLen) const;
+
+    FudStatus toInt64(int64_t& number, uint8_t specifiedRadix, size_t& strLen) const;
+
+    FudStatus toFloat(float& number, size_t& strLen) const;
+
+    FudStatus toDouble(double& number, size_t& strLen) const;
+
+  private:
+    size_t m_length;
+    const utf8* m_data;
+};
+
+FudStatus skipWhitespace(StringView& view, size_t& skipIndex);
+
+} // namespace fud
+
+#endif