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comparison src/core/strings.cc @ 273:f31305b9f60a

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*: various code safety changes this also makes the code build on Qt 5.7. I can't test it though because I don't have it working... FAIL!
author Paper <paper@paper.us.eu.org>
date Thu, 18 Apr 2024 16:53:17 -0400
parents 9a04802848c0
children f6a756c19bfb
comparison
equal deleted inserted replaced
272:5437009cb10e 273:f31305b9f60a
11 11
12 #include <algorithm> 12 #include <algorithm>
13 #include <cctype> 13 #include <cctype>
14 #include <codecvt> 14 #include <codecvt>
15 #include <iostream> 15 #include <iostream>
16 #include <iomanip>
16 #include <locale> 17 #include <locale>
17 #include <string> 18 #include <string>
18 #include <unordered_map> 19 #include <unordered_map>
19 #include <vector> 20 #include <vector>
20 21
241 } 242 }
242 243
243 /* util funcs */ 244 /* util funcs */
244 uint64_t HumanReadableSizeToBytes(const std::string& str) { 245 uint64_t HumanReadableSizeToBytes(const std::string& str) {
245 static const std::unordered_map<std::string, uint64_t> bytes_map = { 246 static const std::unordered_map<std::string, uint64_t> bytes_map = {
246 {"KB", 1ull << 10}, 247 {"KB", 1000ull},
247 {"MB", 1ull << 20}, 248 {"MB", 1000000ull},
248 {"GB", 1ull << 30}, 249 {"GB", 1000000000ull},
249 {"TB", 1ull << 40}, 250 {"TB", 1000000000000ull},
250 {"PB", 1ull << 50} /* surely we won't need more than this */ 251 {"PB", 1000000000000000ull},
252 {"KiB", 1ull << 10},
253 {"MiB", 1ull << 20},
254 {"GiB", 1ull << 30},
255 {"TiB", 1ull << 40},
256 {"PiB", 1ull << 50} /* surely we won't need more than this */
251 }; 257 };
252 258
253 for (const auto& suffix : bytes_map) { 259 for (const auto& suffix : bytes_map) {
254 if (str.find(suffix.first) != std::string::npos) { 260 if (str.find(suffix.first) != std::string::npos) {
255 try { 261 try {
262 } 268 }
263 269
264 return ToInt(str, 0); 270 return ToInt(str, 0);
265 } 271 }
266 272
273 std::string BytesToHumanReadableSize(uint64_t bytes, int precision) {
274 #if QT_VERSION >= QT_VERSION_CHECK(5, 10, 0)
275 /* QLocale in Qt >= 5.10.0 has a function for this */
276 return Strings::ToUtf8String(session.config.locale.GetLocale().formattedDataSize(bytes), precision);
277 #else
278 static const std::unordered_map<uint64_t, std::string> map = {
279 {1ull << 10, "KiB"},
280 {1ull << 20, "MiB"},
281 {1ull << 30, "GiB"},
282 {1ull << 40, "TiB"},
283 {1ull << 50, "PiB"}
284 };
285
286 for (const auto& suffix : map) {
287 if (bytes / suffix.first < 1)
288 continue;
289
290 std::stringstream ss;
291 ss << std::setprecision(precision)
292 << (static_cast<double>(bytes) / suffix.first) << " "
293 << suffix.second;
294 return ss.str();
295 }
296
297 /* better luck next time */
298 return "0 bytes";
299 #endif
300 }
301
267 void RemoveLeadingChars(std::string& s, const char c) { 302 void RemoveLeadingChars(std::string& s, const char c) {
268 s.erase(0, std::min(s.find_first_not_of(c), s.size() - 1)); 303 s.erase(0, std::min(s.find_first_not_of(c), s.size() - 1));
269 } 304 }
270 305
271 void RemoveTrailingChars(std::string& s, const char c) { 306 void RemoveTrailingChars(std::string& s, const char c) {