Merge branch 'main' into vec3-models-loader

src/util/platform.cpp

@@ -7,12 +7,11 @@
 #include <sstream>
 
 #include "typedefs.hpp"
+#include "stringutil.hpp"
 
 #ifdef _WIN32
 #include <Windows.h>
 
-#include "stringutil.hpp"
-
 void platform::configure_encoding() {
     // set utf-8 encoding to console output
     SetConsoleOutputCP(CP_UTF8);
@@ -35,7 +34,6 @@ std::string platform::detect_locale() {
         .replace(2, 1, "_")
         .substr(0, 5);
 }
-
 #else
 
 void platform::configure_encoding() {
@@ -49,5 +47,18 @@ std::string platform::detect_locale() {
 
     return preferredLocaleName.substr(0, 5);
 }
-
 #endif
+
+void platform::open_folder(const std::filesystem::path& folder) {
+    if (!std::filesystem::is_directory(folder)) {
+        return;
+    }
+#ifdef __APPLE__
+    auto cmd = "open "+util::quote(folder.u8string());
+#elif defined(_WIN32)
+    auto cmd = "start explorer "+util::quote(folder.u8string());
+#else
+    auto cmd = "xdg-open "+util::quote(folder.u8string());
+#endif
+    system(cmd.c_str());
+}

src/util/platform.hpp

@@ -1,9 +1,13 @@
 #pragma once
 
 #include <string>
+#include <filesystem>
 
 namespace platform {
     void configure_encoding();
-    // @return environment locale in ISO format ll_CC
+    /// @return environment locale in ISO format ll_CC
     std::string detect_locale();
+    /// @brief Open folder using system file manager asynchronously
+    /// @param folder target folder
+    void open_folder(const std::filesystem::path& folder);
 }

src/util/stringutil.cpp

@@ -128,7 +128,7 @@ inline uint utf8_len(ubyte cp) {
     if ((cp & 0xF8) == 0xF0) {
         return 4;
     }
-    return 0;
+    throw std::runtime_error("utf8 decode error");
 }
 
 uint32_t util::decode_utf8(uint& size, const char* chr) {
@@ -156,6 +156,16 @@ size_t util::crop_utf8(std::string_view s, size_t maxSize) {
     return pos;
 }
 
+size_t util::length_utf8(std::string_view s) {
+    size_t length = 0;
+    size_t pos = 0;
+    while (pos < s.length()) {
+        pos += utf8_len(s[pos]);
+        length++;
+    }
+    return length;
+}
+
 template<class C>
 std::string xstr2str_utf8(const std::basic_string<C>& xs) {
     std::vector<char> chars;

src/util/stringutil.hpp

@@ -44,6 +44,11 @@ namespace util {
     /// @param maxSize max encoded string length after crop
     /// @return cropped string size (less or equal to maxSize)
     size_t crop_utf8(std::string_view s, size_t maxSize);
+
+    /// @brief Measure utf8-encoded string length
+    /// @param s source encoded string
+    /// @return unicode string length (number of codepoints)
+    size_t length_utf8(std::string_view s);
     
     bool is_integer(const std::string& text);
     bool is_integer(const std::wstring& text);