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83 lines
2.0 KiB
83 lines
2.0 KiB
4 years ago
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#pragma once
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#include <cstring>
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#include <string>
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#include <type_traits>
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#include "utils/stdcompat/string_view.hpp"
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namespace devilution {
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/**
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* @brief Writes the integer to the given buffer.
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* @return char* end of the buffer
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*/
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char *BufCopy(char *out, int value);
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/**
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* @brief Appends the integer to the given string.
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*/
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void StrAppend(std::string &out, int value);
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/**
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* @brief Copies the given string_view to the given buffer.
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*/
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inline char *BufCopy(char *out, string_view value)
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{
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std::memcpy(out, value.data(), value.size());
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return out + value.size();
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}
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/**
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* @brief Copies the given string_view to the given string.
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*/
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inline void StrAppend(std::string &out, string_view value)
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{
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out.append(value.data(), value.size());
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}
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/**
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* @brief Appends the given C string to the given buffer.
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*
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* `str` must be a null-terminated C string, `out` will not be null terminated.
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*/
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inline char *BufCopy(char *out, const char *str)
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{
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return BufCopy(out, string_view(str != nullptr ? str : "(nullptr)"));
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}
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/**
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* @brief Appends the given C string to the given string.
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*/
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inline void StrAppend(std::string &out, const char *str)
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{
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if (str == nullptr)
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out.append("(nullptr)");
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out.append(str, string_view(str).size());
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}
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template <typename Arg, typename... Args>
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inline typename std::enable_if<(sizeof...(Args) > 0), char *>::type
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BufCopy(char *out, Arg &&arg, Args &&...args)
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{
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return BufCopy(BufCopy(out, std::forward<Arg>(arg)), std::forward<Args>(args)...);
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}
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template <typename Arg, typename... Args>
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inline typename std::enable_if<(sizeof...(Args) > 0), void>::type
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StrAppend(std::string &out, Arg &&arg, Args &&...args)
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{
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StrAppend(out, std::forward<Arg>(arg));
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StrAppend(out, std::forward<Args>(args)...);
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}
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template <typename... Args>
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std::string StrCat(Args &&...args)
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{
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std::string result;
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StrAppend(result, std::forward<Args>(args)...);
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return result;
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}
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} // namespace devilution
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