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| 1 | +#include <iostream> |
| 2 | +#include <string> |
| 3 | +#include <sstream> |
| 4 | +#include <regex> |
| 5 | +#include <cstdlib> |
| 6 | +#include <cstring> |
| 7 | + |
| 8 | +enum CopyType : unsigned short int { |
| 9 | + FromSameFolder, |
| 10 | + FromAnotherFolder |
| 11 | +}; |
| 12 | + |
| 13 | +template<typename T, size_t N> |
| 14 | +size_t ArraySize(T(&)[N]) { |
| 15 | + return N; |
| 16 | +} |
| 17 | + |
| 18 | +std::string files[] = { |
| 19 | + "example.txt" |
| 20 | + |
| 21 | +// Что происходит при copy-paste одного и того же файла в одной и той же папке: |
| 22 | + , "example — копия.txt" |
| 23 | + , "example — копия 2.txt" |
| 24 | + , "example — копия 4.txt" |
| 25 | + , "example — копия 40.txt" |
| 26 | + , "example — копия 100.txt" |
| 27 | + , "example — копия 100500.txt" |
| 28 | + |
| 29 | +// Что происходит при copy-paste файла из другой папки в папку, где уже есть |
| 30 | +// файл с таким именем: |
| 31 | + , "example 2.txt" |
| 32 | + , "example 3.txt" |
| 33 | + , "example 5.txt" |
| 34 | + , "example 40.txt" |
| 35 | + , "example 100.txt" |
| 36 | + , "example 100500.txt" |
| 37 | + |
| 38 | + , "another.txt" |
| 39 | + |
| 40 | + , "two.txt" |
| 41 | + , "two — копия.txt" |
| 42 | + |
| 43 | + , "t 3.txt" |
| 44 | + |
| 45 | + // Скопировать example.txt два раза в одной папке. |
| 46 | + // Скопировать example — копия 2.txt в другую папку. |
| 47 | + // Скопировать обратно. |
| 48 | + , "example — копия 2 2.txt" |
| 49 | + |
| 50 | + , "b копия 2.txt" |
| 51 | + , "b копия 2 2.txt" |
| 52 | + |
| 53 | +}; |
| 54 | + |
| 55 | +std::string GetExtensionFromFileName(const std::string &filename) { |
| 56 | + size_t lastdot = filename.find_last_of("."); |
| 57 | + if (lastdot == std::string::npos) |
| 58 | + return ""; |
| 59 | + return filename.substr(lastdot); |
| 60 | +} |
| 61 | + |
| 62 | +std::string RemoveExtensionFromFileName(const std::string &filename) { |
| 63 | + size_t lastdot = filename.find_last_of("."); |
| 64 | + if (lastdot == std::string::npos) |
| 65 | + return filename; |
| 66 | + return filename.substr(0, lastdot); |
| 67 | +} |
| 68 | + |
| 69 | +template<size_t N> |
| 70 | +bool Exists(std::string filename, std::string (&filelist)[N]) { |
| 71 | + for (size_t i = 0; i < N; ++i) |
| 72 | + if (filename == filelist[i]) |
| 73 | + return true; |
| 74 | + return false; |
| 75 | +} |
| 76 | + |
| 77 | +template<size_t N> |
| 78 | +std::string MakeFileName(std::string filename, std::string (&filelist)[N], CopyType type) { |
| 79 | + static const std::regex PATTERN_DUPLICATE(R"(^(.* — копия)( ?)(\d*)$)"); |
| 80 | + static const std::regex PATTERN_COPY(R"(^(.*?)( ?)(\d*)$)"); |
| 81 | + |
| 82 | + const std::regex &pattern = type == FromSameFolder ? PATTERN_DUPLICATE : PATTERN_COPY; |
| 83 | + std::smatch match; |
| 84 | + |
| 85 | + std::string ext = GetExtensionFromFileName(filename); |
| 86 | + std::string resultname = RemoveExtensionFromFileName(filename); |
| 87 | + |
| 88 | + if (Exists(filename, filelist)) { |
| 89 | + if (type == FromAnotherFolder) { |
| 90 | + resultname += " 2"; |
| 91 | + } else if (type == FromSameFolder) { |
| 92 | + if (!std::regex_search(resultname, match, pattern)) { |
| 93 | + resultname += " — копия"; |
| 94 | + } |
| 95 | + } |
| 96 | + } else { |
| 97 | + return filename; |
| 98 | + } |
| 99 | + |
| 100 | + int i = 2; |
| 101 | + while (Exists(resultname + ext, filelist)) { |
| 102 | + if (std::regex_search(resultname, match, pattern)) { |
| 103 | + const std::string num = match[3]; |
| 104 | + if (!num.empty()) ++i; |
| 105 | + std::stringstream replace; |
| 106 | + replace << "$1 " << i; |
| 107 | + resultname = std::regex_replace(resultname, pattern, replace.str()); |
| 108 | + } |
| 109 | + } |
| 110 | + |
| 111 | + return resultname + ext; |
| 112 | +} |
| 113 | + |
| 114 | +int main(int argc, const char * argv[]) { |
| 115 | + std::cout << "" << std::endl; |
| 116 | + |
| 117 | + assert("example — копия 3.txt" == MakeFileName("example.txt", files, FromSameFolder)); |
| 118 | + assert("example — копия 3.txt" == MakeFileName("example — копия 3.txt", files, FromSameFolder)); |
| 119 | + assert("example — копия 3.txt" == MakeFileName("example — копия 4.txt", files, FromSameFolder)); |
| 120 | + |
| 121 | + assert("unique.txt" == MakeFileName("unique.txt", files, FromSameFolder)); |
| 122 | + assert("another — копия.txt" == MakeFileName("another.txt", files, FromSameFolder)); |
| 123 | + assert("two — копия 2.txt" == MakeFileName("two.txt", files, FromSameFolder)); |
| 124 | + |
| 125 | + assert("t 3 2.txt" == MakeFileName("t 3.txt", files, FromAnotherFolder)); |
| 126 | + |
| 127 | + assert("example — копия 2 2 — копия.txt" == MakeFileName("example — копия 2 2.txt", files, FromSameFolder)); |
| 128 | + assert("example — копия 2 2 2.txt" == MakeFileName("example — копия 2 2.txt", files, FromAnotherFolder)); |
| 129 | + assert("b копия 2 3.txt" == MakeFileName("b копия 2.txt", files, FromAnotherFolder)); |
| 130 | + |
| 131 | + assert("example 4.txt" == MakeFileName("example.txt", files, FromAnotherFolder)); |
| 132 | + assert("example 5 2.txt" == MakeFileName("example 5.txt", files, FromAnotherFolder)); |
| 133 | + |
| 134 | + return EXIT_SUCCESS; |
| 135 | +} |
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