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2
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1 /**
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2 * string_utils.cpp: Useful functions for manipulating strings
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3 *
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4 * Every function in here *should* have a working wstring equivalent.
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5 **/
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6 #include <vector>
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7 #include <string>
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8 #include <codecvt>
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9 #include <locale>
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10 #include "string_utils.h"
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11
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12 /* It's actually pretty insane how the standard library still doesn't
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13 have a function for this. Look at how simple this is. */
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14 std::string StringUtils::Implode(const std::vector<std::string>& vector,
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15 const std::string& delimiter) {
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16 std::string out = "";
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3
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17 for (unsigned long long i = 0; i < vector.size(); i++) {
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2
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18 out.append(vector.at(i));
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19 if (i < vector.size()-1)
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20 out.append(delimiter);
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21 }
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22 return out;
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23 }
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24
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25 std::wstring StringUtils::Implode(const std::vector<std::wstring>& vector,
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26 const std::wstring& delimiter) {
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27 std::wstring out = L"";
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3
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28 for (unsigned long long i = 0; i < vector.size(); i++) {
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2
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29 out.append(vector.at(i));
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30 if (i < vector.size()-1)
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31 out.append(delimiter);
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32 }
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33 return out;
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34 }
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35
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36 std::string StringUtils::WstrToUtf8(const std::wstring& string) {
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37 std::wstring_convert<std::codecvt_utf8<wchar_t>> convert;
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38 return convert.to_bytes(string);
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39 }
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40
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41 std::wstring StringUtils::Utf8ToWstr(const std::string& string) {
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42 std::wstring_convert<std::codecvt_utf8<wchar_t>> convert;
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43 return convert.from_bytes(string);
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44 }
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45
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46 std::string StringUtils::ReplaceAll(const std::string& string,
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47 const std::string& find,
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48 const std::string& replace) {
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49 std::string result;
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50 size_t pos, find_len = find.size(), from = 0;
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51 while ((pos=string.find(find,from)) != std::string::npos) {
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52 result.append(string, from, pos - from);
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53 result.append(replace);
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54 from = pos + find_len;
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55 }
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56 result.append(string, from, std::string::npos);
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57 return result;
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58 }
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59
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60 std::wstring StringUtils::ReplaceAll(const std::wstring& string,
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61 const std::wstring& find,
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62 const std::wstring& replace) {
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63 std::wstring result;
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64 size_t pos, find_len = find.size(), from = 0;
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65 while ((pos=string.find(find,from)) != std::wstring::npos) {
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66 result.append(string, from, pos - from);
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67 result.append(replace);
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68 from = pos + find_len;
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69 }
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70 result.append(string, from, std::wstring::npos);
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71 return result;
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72 }
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73
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74 /* this function probably fucks your RAM but whatevs */
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75 std::string StringUtils::SanitizeLineEndings(const std::string& string) {
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76 std::string result(string);
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77 result = ReplaceAll(result, "\r\n", "\n");
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78 result = ReplaceAll(result, "<br>", "\n");
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79 result = ReplaceAll(result, "\n\n\n", "\n\n");
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80 return result;
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81 }
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82
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83 std::wstring StringUtils::SanitizeLineEndings(const std::wstring& string) {
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84 std::wstring result(string);
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85 result = ReplaceAll(result, L"\r\n", L"\n");
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86 result = ReplaceAll(result, L"<br>", L"\n");
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87 result = ReplaceAll(result, L"\n\n\n", L"\n\n");
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88 return result;
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89 }
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90
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91 std::string StringUtils::RemoveHtmlTags(const std::string& string) {
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92 std::string html(string);
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93 while (html.find("<") != std::string::npos)
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94 {
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95 auto startpos = html.find("<");
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96 auto endpos = html.find(">") + 1;
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97
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98 if (endpos != std::string::npos)
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99 {
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100 html.erase(startpos, endpos - startpos);
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101 }
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102 }
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103 return html;
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104 }
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105
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106 std::wstring StringUtils::RemoveHtmlTags(const std::wstring& string) {
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107 std::wstring html(string);
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108 while (html.find(L"<") != std::wstring::npos)
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109 {
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110 auto startpos = html.find(L"<");
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111 auto endpos = html.find(L">") + 1;
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112
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113 if (endpos != std::wstring::npos)
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114 {
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115 html.erase(startpos, endpos - startpos);
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116 }
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117 }
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118 return html;
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119 }
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120
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121 std::string StringUtils::TextifySynopsis(const std::string& string) {
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122 std::string result = SanitizeLineEndings(string);
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123 result = RemoveHtmlTags(string);
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124 return result;
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125 }
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126
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127 std::wstring StringUtils::TextifySynopsis(const std::wstring& string) {
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128 std::wstring result = SanitizeLineEndings(string);
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129 result = RemoveHtmlTags(string);
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130 return result;
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131 }
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