151 lines
4.0 KiB
C++
151 lines
4.0 KiB
C++
#ifndef String_Include_H_
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#define String_Include_H_
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#include "user/lib/Array.h"
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#include "user/lib/Iterator.h"
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namespace bse {
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unsigned int strlen(const char* str);
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void strncpy(char* destination, unsigned int n, const char* source);
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int strcmp(const char* a, const char* b);
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class string {
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private:
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std::size_t len = 0;
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char* buf = nullptr;
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public:
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using iterator = ContinuousIterator<char>;
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string() = default;
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string(const char* str) : len(strlen(str)), buf(new char[len + 1]) {
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strncpy(buf, len + 1, str);
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}
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// Convert char array to string
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template<std::size_t N>
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explicit string(const array<char, N>& arr) : len(N), buf(new char[len + 1]) {
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for (std::size_t i = 0; i < N; ++i) {
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buf[i] = arr[i];
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}
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buf[N] = '\0';
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}
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string(const string& copy) : len(copy.len), buf(new char[len + 1]) {
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strncpy(buf, len + 1, copy.buf);
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}
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string& operator=(const string& copy) {
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if (© != this) {
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len = copy.len;
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buf = new char[len + 1];
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strncpy(buf, len + 1, copy.buf);
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}
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return *this;
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}
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string(string&& move) noexcept : len(move.len), buf(move.buf) {
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move.len = 0;
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move.buf = nullptr;
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}
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string& operator=(string&& move) noexcept {
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if (&move != this) {
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len = move.len;
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buf = move.buf;
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move.len = 0;
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move.buf = nullptr;
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}
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return *this;
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}
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~string() {
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delete[] buf;
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}
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iterator begin() { return iterator(buf); }
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iterator begin() const { return iterator(buf); }
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iterator end() { return iterator(&buf[len]); }
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iterator end() const { return iterator(&buf[len]); }
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explicit operator char*() { return buf; }
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explicit operator char*() const { return buf; }
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char operator[](std::size_t pos) { return buf[pos]; }
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char operator[](std::size_t pos) const { return buf[pos]; }
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string operator+(const string& other) const {
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string new_str;
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new_str.len = len + other.len;
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new_str.buf = new char[new_str.len + 1];
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strncpy(new_str.buf, len, buf); // Copy this content
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strncpy(&new_str.buf[len], other.len + 1, other.buf); // Copy other content
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return new_str;
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}
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string operator+(const char* other) const {
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std::size_t other_len = strlen(other);
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string new_str;
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new_str.len = len + other_len;
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new_str.buf = new char[new_str.len + 1];
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strncpy(new_str.buf, len, buf);
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strncpy(&new_str.buf[len], other_len + 1, other);
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return new_str;
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}
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string& operator+=(const string& other) {
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unsigned int new_len = len + other.size();
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char* new_buf = new char[new_len + 1];
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strncpy(new_buf, len, buf);
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strncpy(&new_buf[len], other.size() + 1, other.buf);
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delete[] buf;
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buf = new_buf;
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len = new_len;
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return *this;
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}
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string& operator+=(const char* other) {
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unsigned int other_len = strlen(other);
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unsigned int new_len = len + other_len;
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char* new_buf = new char[new_len + 1];
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strncpy(new_buf, len, buf);
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strncpy(&new_buf[len], other_len + 1, other);
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delete[] buf;
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buf = new_buf;
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len = new_len;
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return *this;
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}
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bool operator==(const string& other) const {
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return strcmp(buf, other.buf) == 0;
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}
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bool operator!=(const string& other) const {
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return strcmp(buf, other.buf) != 0;
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}
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std::size_t size() const {
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return len;
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}
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};
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} // namespace bse
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#endif
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