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annotate include/core/strings.h @ 105:6d8da6e64d61

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author Paper <mrpapersonic@gmail.com>
date Sun, 05 Nov 2023 03:54:26 -0500
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children ab191e28e69d
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1 #ifndef __core__strings_h
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2 #define __core__strings_h
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4 #include <string>
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5 #include <vector>
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6 #include <array>
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8 class QString;
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10 namespace Strings {
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12 template<unsigned...>struct seq{using type=seq;};
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13 template<unsigned N, unsigned... Is>
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14 struct gen_seq_x : gen_seq_x<N-1, N-1, Is...>{};
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15 template<unsigned... Is>
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16 struct gen_seq_x<0, Is...> : seq<Is...>{};
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17 template<unsigned N>
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18 using gen_seq=typename gen_seq_x<N>::type;
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20 template<size_t S>
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21 using size=std::integral_constant<size_t, S>;
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23 template<class T, size_t N>
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24 constexpr size<N> length( T const(&)[N] ) { return {}; }
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25 template<class T, size_t N>
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26 constexpr size<N> length( std::array<T, N> const& ) { return {}; }
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28 template<class T>
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29 using length_t = decltype(length(std::declval<T>()));
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30
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31 constexpr size_t string_size() { return 0; }
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32 template<class...Ts>
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33 constexpr size_t string_size( size_t i, Ts... ts ) {
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34 return (i?i-1:0) + string_size(ts...);
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35 }
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36 template<class...Ts>
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37 using string_length=size< string_size( length_t<Ts>{}... )>;
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39 template<class...Ts>
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40 using combined_string = std::array<char, string_length<Ts...>{}+1>;
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41
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42 template<class Lhs, class Rhs, unsigned...I1, unsigned...I2>
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43 constexpr const combined_string<Lhs,Rhs>
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44 concat_impl( Lhs const& lhs, Rhs const& rhs, seq<I1...>, seq<I2...>)
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45 {
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46 return {{ lhs[I1]..., rhs[I2]..., '\0' }};
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47 }
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48
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49 template<class Lhs, class Rhs>
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50 constexpr const combined_string<Lhs,Rhs>
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51 concat(Lhs const& lhs, Rhs const& rhs)
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52 {
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53 return concat_impl(lhs, rhs, gen_seq<string_length<Lhs>{}>{}, gen_seq<string_length<Rhs>{}>{});
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54 }
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56 template<class T0, class T1, class... Ts>
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57 constexpr const combined_string<T0, T1, Ts...>
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58 concat(T0 const&t0, T1 const&t1, Ts const&...ts)
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59 {
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60 return concat(t0, concat(t1, ts...));
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61 }
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63 template<class T>
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64 constexpr const combined_string<T>
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65 concat(T const&t) {
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66 return concat(t, "");
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67 }
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68 constexpr const combined_string<>
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69 concat() {
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70 return concat("");
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71 }
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72
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73 /* Implode function: takes a vector of strings and turns it
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74 into a string, separated by delimiters. */
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75 std::string Implode(const std::vector<std::string>& vector, const std::string& delimiter);
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77 /* Substring removal functions */
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78 std::string ReplaceAll(std::string string, const std::string& find, const std::string& replace);
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79 std::string SanitizeLineEndings(const std::string& string);
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80 std::string RemoveHtmlTags(std::string string);
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81 std::string ParseHtmlEntities(std::string string);
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83 /* stupid HTML bullshit */
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84 std::string TextifySynopsis(const std::string& string);
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86 std::string ToUpper(const std::string& string);
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87 std::string ToLower(const std::string& string);
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88
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89 /* functions that make the way we convert from and to
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90 different string formats universal */
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91 std::wstring ToWstring(const std::string& string);
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92 std::wstring ToWstring(const QString& string);
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93 std::string ToUtf8String(const std::wstring& wstring);
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94 std::string ToUtf8String(const QString& string);
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95 QString ToQString(const std::string& string);
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96 QString ToQString(const std::wstring& wstring);
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98 /* arithmetic :) */
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99 int ToInt(const std::string& str, int def = 0);
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100
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101 bool BeginningMatchesSubstring(const std::string& str, const std::string& sub);
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102
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103 }; // namespace Strings
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104
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105 #endif // __core__strings_h