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annotate src/core/strings.cc @ 187:9613d72b097e

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*: multiple performance improvements like marking `static const` when it makes sense... date: change old stupid heap-based method to a structure which should make copying the thing actually make a copy. also many performance-based changes, like removing the std::tie dependency and forward-declaring nlohmann json *: replace every instance of QString::fromUtf8 to Strings::ToQString. the main difference is that our function will always convert exactly what is in the string, while some other times it would only convert up to the nearest NUL byte
author Paper <mrpapersonic@gmail.com>
date Wed, 06 Dec 2023 13:43:54 -0500
parents 275da698697d
children 7cf53145de11
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1 /**
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2 * strings.cpp: Useful functions for manipulating strings
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3 **/
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4 #include "core/strings.h"
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5 #include "core/session.h" // locale
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6
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7 #include <QByteArray>
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8 #include <QDebug>
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9 #include <QString>
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10 #include <QLocale>
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11
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12 #include <algorithm>
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13 #include <cctype>
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14 #include <codecvt>
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15 #include <locale>
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16 #include <string>
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17 #include <vector>
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18 #include <unordered_map>
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19
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20 namespace Strings {
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21
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22 /* ew */
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23 std::string Implode(const std::vector<std::string>& vector, const std::string& delimiter) {
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24 if (vector.size() < 1)
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25 return "-";
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26
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27 std::string out = "";
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28
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29 for (unsigned long long i = 0; i < vector.size(); i++) {
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30 out.append(vector.at(i));
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31 if (i < vector.size() - 1)
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32 out.append(delimiter);
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33 }
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34
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35 return out;
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36 }
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37
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38 std::vector<std::string> Split(const std::string &text, const std::string& delimiter) {
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39 std::vector<std::string> tokens;
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40
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41 std::size_t start = 0, end = 0;
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42 while ((end = text.find(delimiter, start)) != std::string::npos) {
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43 tokens.push_back(text.substr(start, end - start));
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44 start = end + delimiter.length();
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45 }
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46 tokens.push_back(text.substr(start));
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47
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48 return tokens;
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49 }
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50
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51 /* This function is really only used for cleaning up the synopsis of
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52 horrible HTML debris from AniList :) */
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53 std::string ReplaceAll(std::string string, const std::string& find, const std::string& replace) {
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54 size_t pos = 0;
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55 while ((pos = string.find(find, pos)) != std::string::npos) {
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56 string.replace(pos, find.length(), replace);
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57 pos += replace.length();
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58 }
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59 return string;
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60 }
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61
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62 std::string SanitizeLineEndings(const std::string& string) {
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63 /* LOL */
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64 return
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65 ReplaceAll(
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66 ReplaceAll(
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67 ReplaceAll(
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68 ReplaceAll(
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69 ReplaceAll(string, "\r\n", "\n"),
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70 "</p>", "\n"),
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71 "<br>", "\n"),
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72 "<br />", "\n"),
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73 "\n\n\n", "\n\n");
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74 }
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75
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76 /* removes dumb HTML tags because anilist is aids and
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77 gives us HTML for synopses :/ */
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78 std::string RemoveHtmlTags(std::string string) {
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79 while (string.find("<") != std::string::npos) {
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80 auto startpos = string.find("<");
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81 auto endpos = string.find(">") + 1;
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82
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83 if (endpos != std::string::npos)
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84 string.erase(startpos, endpos - startpos);
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85 }
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86 return string;
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87 }
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88
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89 /* e.g. "&lt;" for "<" */
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90 std::string ParseHtmlEntities(std::string string) {
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91 const std::unordered_map<std::string, std::string> map = {
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92 /* The only one of these I can understand using are the first
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93 three. why do the rest of these exist? */
98
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94 {"&lt;", "<"},
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95 {"&rt;", ">"},
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96 {"&nbsp;", "\xA0"},
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97 {"&amp;", "&"},
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98 {"&quot;", "\""},
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99 {"&apos;", "'"},
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100 {"&cent;", "¢"},
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101 {"&pound;", "£"},
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102 {"&euro;", "€"},
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103 {"&yen;", "¥"},
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104 {"&copy;", "©"},
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105 {"&reg;", "®"},
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106 {"&rsquo;", "’"} // Haibane Renmei, AniList
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107 };
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108
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109 for (const auto& item : map)
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110 string = ReplaceAll(string, item.first, item.second);
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111 return string;
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112 }
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113
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114 /* removes stupid HTML stuff */
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115 std::string TextifySynopsis(const std::string& string) {
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116 return ParseHtmlEntities(RemoveHtmlTags(SanitizeLineEndings(string)));
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117 }
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118
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119 /* let Qt handle the heavy lifting of locale shit
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120 I don't want to deal with */
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121 std::string ToUpper(const std::string& string) {
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122 return ToUtf8String(session.config.locale.GetLocale().toUpper(ToQString(string)));
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123 }
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124
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125 std::string ToLower(const std::string& string) {
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126 return ToUtf8String(session.config.locale.GetLocale().toLower(ToQString(string)));
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127 }
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128
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129 std::wstring ToWstring(const std::string& string) {
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130 static std::wstring_convert<std::codecvt_utf8<wchar_t>, wchar_t> converter;
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131 return converter.from_bytes(string);
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132 }
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133
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134 std::wstring ToWstring(const QString& string) {
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135 std::wstring arr(string.size(), L'\0');
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136 string.toWCharArray(&arr.front());
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137 return arr;
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138 }
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139
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140 std::string ToUtf8String(const std::wstring& wstring) {
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141 static std::wstring_convert<std::codecvt_utf8<wchar_t>, wchar_t> converter;
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142 return converter.to_bytes(wstring);
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143 }
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144
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145 std::string ToUtf8String(const QString& string) {
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146 const QByteArray ba = string.toUtf8();
77
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147 return std::string(ba.constData(), ba.size());
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148 }
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149
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150 std::string ToUtf8String(const QByteArray& ba) {
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151 return std::string(ba.constData(), ba.size());
64
fe719c109dbc *: update
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diff changeset
152 }
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diff changeset
153
fe719c109dbc *: update
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154 QString ToQString(const std::string& string) {
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155 return QString::fromUtf8(string.c_str(), string.length());
fe719c109dbc *: update
Paper <mrpapersonic@gmail.com>
parents: 62
diff changeset
156 }
fe719c109dbc *: update
Paper <mrpapersonic@gmail.com>
parents: 62
diff changeset
157
fe719c109dbc *: update
Paper <mrpapersonic@gmail.com>
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diff changeset
158 QString ToQString(const std::wstring& wstring) {
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diff changeset
159 return QString::fromWCharArray(wstring.c_str(), wstring.length());
fe719c109dbc *: update
Paper <mrpapersonic@gmail.com>
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diff changeset
160 }
fe719c109dbc *: update
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diff changeset
161
120
275da698697d config: template-ify INI
Paper <mrpapersonic@gmail.com>
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162 /* not really an "int"... but who cares? */
101
c537996cf67b *: multitude of config changes
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163 int ToInt(const std::string& str, int def) {
c537996cf67b *: multitude of config changes
Paper <mrpapersonic@gmail.com>
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164 int tmp = 0;
c537996cf67b *: multitude of config changes
Paper <mrpapersonic@gmail.com>
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165 try {
c537996cf67b *: multitude of config changes
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166 tmp = std::stoi(str);
c537996cf67b *: multitude of config changes
Paper <mrpapersonic@gmail.com>
parents: 100
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167 } catch (std::invalid_argument const& ex) {
c537996cf67b *: multitude of config changes
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diff changeset
168 qDebug() << "Failed to parse int from std::string: no number found in " << ToQString(str) << " defaulting to " << def;
c537996cf67b *: multitude of config changes
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diff changeset
169 tmp = def;
c537996cf67b *: multitude of config changes
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parents: 100
diff changeset
170 }
c537996cf67b *: multitude of config changes
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diff changeset
171 return tmp;
c537996cf67b *: multitude of config changes
Paper <mrpapersonic@gmail.com>
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diff changeset
172 }
c537996cf67b *: multitude of config changes
Paper <mrpapersonic@gmail.com>
parents: 100
diff changeset
173
116
254b1d2b7096 settings: add torrents page, make rss feed configurable
Paper <mrpapersonic@gmail.com>
parents: 114
diff changeset
174 bool ToBool(const std::string& s, const bool def) {
254b1d2b7096 settings: add torrents page, make rss feed configurable
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diff changeset
175 if (s.length() < 4)
254b1d2b7096 settings: add torrents page, make rss feed configurable
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diff changeset
176 return def;
187
9613d72b097e *: multiple performance improvements
Paper <mrpapersonic@gmail.com>
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diff changeset
177 const std::string l = Strings::ToLower(s);
116
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178 if (Strings::BeginningMatchesSubstring(l, "true"))
254b1d2b7096 settings: add torrents page, make rss feed configurable
Paper <mrpapersonic@gmail.com>
parents: 114
diff changeset
179 return true;
254b1d2b7096 settings: add torrents page, make rss feed configurable
Paper <mrpapersonic@gmail.com>
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diff changeset
180 else if (Strings::BeginningMatchesSubstring(l, "false"))
254b1d2b7096 settings: add torrents page, make rss feed configurable
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diff changeset
181 return false;
254b1d2b7096 settings: add torrents page, make rss feed configurable
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diff changeset
182 return def;
254b1d2b7096 settings: add torrents page, make rss feed configurable
Paper <mrpapersonic@gmail.com>
parents: 114
diff changeset
183 }
254b1d2b7096 settings: add torrents page, make rss feed configurable
Paper <mrpapersonic@gmail.com>
parents: 114
diff changeset
184
254b1d2b7096 settings: add torrents page, make rss feed configurable
Paper <mrpapersonic@gmail.com>
parents: 114
diff changeset
185 std::string ToUtf8String(const bool b) {
254b1d2b7096 settings: add torrents page, make rss feed configurable
Paper <mrpapersonic@gmail.com>
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186 return b ? "true" : "false";
254b1d2b7096 settings: add torrents page, make rss feed configurable
Paper <mrpapersonic@gmail.com>
parents: 114
diff changeset
187 }
254b1d2b7096 settings: add torrents page, make rss feed configurable
Paper <mrpapersonic@gmail.com>
parents: 114
diff changeset
188
114
ab191e28e69d *: add initial torrent stuff
Paper <mrpapersonic@gmail.com>
parents: 102
diff changeset
189 uint64_t HumanReadableSizeToBytes(const std::string& str) {
187
9613d72b097e *: multiple performance improvements
Paper <mrpapersonic@gmail.com>
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diff changeset
190 static const std::unordered_map<std::string, uint64_t> bytes_map = {
118
39521c47c7a3 *: another huge megacommit, SORRY
Paper <mrpapersonic@gmail.com>
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diff changeset
191 {"KB", 1ull << 10},
39521c47c7a3 *: another huge megacommit, SORRY
Paper <mrpapersonic@gmail.com>
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192 {"MB", 1ull << 20},
39521c47c7a3 *: another huge megacommit, SORRY
Paper <mrpapersonic@gmail.com>
parents: 116
diff changeset
193 {"GB", 1ull << 30},
39521c47c7a3 *: another huge megacommit, SORRY
Paper <mrpapersonic@gmail.com>
parents: 116
diff changeset
194 {"TB", 1ull << 40},
39521c47c7a3 *: another huge megacommit, SORRY
Paper <mrpapersonic@gmail.com>
parents: 116
diff changeset
195 {"PB", 1ull << 50} /* surely we won't need more than this */
114
ab191e28e69d *: add initial torrent stuff
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diff changeset
196 };
ab191e28e69d *: add initial torrent stuff
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diff changeset
197
ab191e28e69d *: add initial torrent stuff
Paper <mrpapersonic@gmail.com>
parents: 102
diff changeset
198 for (const auto& suffix : bytes_map) {
ab191e28e69d *: add initial torrent stuff
Paper <mrpapersonic@gmail.com>
parents: 102
diff changeset
199 if (str.find(suffix.first) != std::string::npos) {
ab191e28e69d *: add initial torrent stuff
Paper <mrpapersonic@gmail.com>
parents: 102
diff changeset
200 try {
ab191e28e69d *: add initial torrent stuff
Paper <mrpapersonic@gmail.com>
parents: 102
diff changeset
201 uint64_t size = std::stod(str) * suffix.second;
ab191e28e69d *: add initial torrent stuff
Paper <mrpapersonic@gmail.com>
parents: 102
diff changeset
202 return size;
ab191e28e69d *: add initial torrent stuff
Paper <mrpapersonic@gmail.com>
parents: 102
diff changeset
203 } catch (std::invalid_argument const& ex) {
ab191e28e69d *: add initial torrent stuff
Paper <mrpapersonic@gmail.com>
parents: 102
diff changeset
204 continue;
ab191e28e69d *: add initial torrent stuff
Paper <mrpapersonic@gmail.com>
parents: 102
diff changeset
205 }
ab191e28e69d *: add initial torrent stuff
Paper <mrpapersonic@gmail.com>
parents: 102
diff changeset
206 }
ab191e28e69d *: add initial torrent stuff
Paper <mrpapersonic@gmail.com>
parents: 102
diff changeset
207 }
ab191e28e69d *: add initial torrent stuff
Paper <mrpapersonic@gmail.com>
parents: 102
diff changeset
208
ab191e28e69d *: add initial torrent stuff
Paper <mrpapersonic@gmail.com>
parents: 102
diff changeset
209 return ToInt(str, 0);
ab191e28e69d *: add initial torrent stuff
Paper <mrpapersonic@gmail.com>
parents: 102
diff changeset
210 }
ab191e28e69d *: add initial torrent stuff
Paper <mrpapersonic@gmail.com>
parents: 102
diff changeset
211
ab191e28e69d *: add initial torrent stuff
Paper <mrpapersonic@gmail.com>
parents: 102
diff changeset
212 std::string RemoveLeadingChars(std::string s, const char c) {
118
39521c47c7a3 *: another huge megacommit, SORRY
Paper <mrpapersonic@gmail.com>
parents: 116
diff changeset
213 s.erase(0, std::min(s.find_first_not_of(c), s.size() - 1));
39521c47c7a3 *: another huge megacommit, SORRY
Paper <mrpapersonic@gmail.com>
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diff changeset
214 return s;
114
ab191e28e69d *: add initial torrent stuff
Paper <mrpapersonic@gmail.com>
parents: 102
diff changeset
215 }
ab191e28e69d *: add initial torrent stuff
Paper <mrpapersonic@gmail.com>
parents: 102
diff changeset
216
ab191e28e69d *: add initial torrent stuff
Paper <mrpapersonic@gmail.com>
parents: 102
diff changeset
217 std::string RemoveTrailingChars(std::string s, const char c) {
ab191e28e69d *: add initial torrent stuff
Paper <mrpapersonic@gmail.com>
parents: 102
diff changeset
218 s.erase(s.find_last_not_of(c) + 1, std::string::npos);
ab191e28e69d *: add initial torrent stuff
Paper <mrpapersonic@gmail.com>
parents: 102
diff changeset
219 return s;
ab191e28e69d *: add initial torrent stuff
Paper <mrpapersonic@gmail.com>
parents: 102
diff changeset
220 }
ab191e28e69d *: add initial torrent stuff
Paper <mrpapersonic@gmail.com>
parents: 102
diff changeset
221
102
b315f3759c56 *: big patch
Paper <mrpapersonic@gmail.com>
parents: 101
diff changeset
222 bool BeginningMatchesSubstring(const std::string& str, const std::string& sub) {
b315f3759c56 *: big patch
Paper <mrpapersonic@gmail.com>
parents: 101
diff changeset
223 for (unsigned long long i = 0; i < str.length() && i < sub.length(); i++)
b315f3759c56 *: big patch
Paper <mrpapersonic@gmail.com>
parents: 101
diff changeset
224 if (str[i] != sub[i])
b315f3759c56 *: big patch
Paper <mrpapersonic@gmail.com>
parents: 101
diff changeset
225 return false;
187
9613d72b097e *: multiple performance improvements
Paper <mrpapersonic@gmail.com>
parents: 120
diff changeset
226
102
b315f3759c56 *: big patch
Paper <mrpapersonic@gmail.com>
parents: 101
diff changeset
227 return true;
b315f3759c56 *: big patch
Paper <mrpapersonic@gmail.com>
parents: 101
diff changeset
228 }
b315f3759c56 *: big patch
Paper <mrpapersonic@gmail.com>
parents: 101
diff changeset
229
9
5c0397762b53 INCOMPLETE: megacommit :)
Paper <mrpapersonic@gmail.com>
parents:
diff changeset
230 } // namespace Strings