Merge branch 'master' into fix-4955

src/util/audio_backend.cpp

@@ -99,15 +99,17 @@ void AudioBackend::contextStateCb(pa_context* c, void* data) {
                            nullptr, nullptr);
       break;
     case PA_CONTEXT_FAILED:
-      // When pulseaudio server restarts, the connection is "failed". Try to reconnect.
-      // pa_threaded_mainloop_lock is already acquired in callback threads.
-      // So there is no need to lock it again.
-      if (backend->context_ != nullptr) {
-        pa_context_disconnect(backend->context_);
-        pa_context_unref(backend->context_);
-        backend->context_ = nullptr;
+      if (pa_context_errno(c) != PA_ERR_CONNECTIONREFUSED) {
+        // When pulseaudio server restarts, the connection is "failed". Try to reconnect.
+        // pa_threaded_mainloop_lock is already acquired in callback threads.
+        // So there is no need to lock it again.
+        if (backend->context_ != nullptr) {
+          pa_context_disconnect(backend->context_);
+          pa_context_unref(backend->context_);
+          backend->context_ = nullptr;
+        }
+        backend->connectContext();
       }
-      backend->connectContext();
       break;
     case PA_CONTEXT_CONNECTING:
     case PA_CONTEXT_AUTHORIZING:

src/util/transform_8bit_to_rgba.cpp

@@ -0,0 +1,60 @@
+#include <filesystem>
+#include <fstream>
+#include <iomanip>
+#include <regex>
+#include <sstream>
+namespace fs = std::filesystem;
+
+struct TransformResult {
+  std::string css;
+  bool was_transformed;
+};
+
+TransformResult transform_8bit_to_hex(const std::string& file_path) {
+  std::ifstream f(file_path, std::ios::in | std::ios::binary);
+  const auto size = fs::file_size(file_path);
+  std::string result(size, '\0');
+  if (!f.is_open() || !f.good()) {
+    throw std::runtime_error("Cannot open file: " + file_path);
+  }
+
+  if (size == 0) {
+    return {.css = result, .was_transformed = false};
+  }
+
+  f.read(result.data(), size);
+
+  static std::regex pattern(
+      R"(\#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2}))");
+  std::string final_output;
+
+  auto it = std::sregex_iterator(result.begin(), result.end(), pattern);
+  auto eof = std::sregex_iterator();
+
+  if (it == eof) {
+    return {.css = result, .was_transformed = false};
+  }
+
+  std::smatch match;
+  while (it != eof) {
+    match = *it;
+
+    final_output += match.prefix().str();
+
+    int r = stoi(match[1].str(), nullptr, 16);
+    int g = stoi(match[2].str(), nullptr, 16);
+    int b = stoi(match[3].str(), nullptr, 16);
+    double a = (stoi(match[4].str(), nullptr, 16) / 255.0);
+
+    std::stringstream ss;
+    ss << "rgba(" << r << "," << g << "," << b << "," << std::fixed << std::setprecision(2) << a
+       << ")";
+    final_output += ss.str();
+
+    ++it;
+  }
+
+  final_output += match.suffix().str();
+
+  return {.css = final_output, .was_transformed = true};
+}

src/util/utf8_string.cpp

@@ -0,0 +1,62 @@
+#include <glib.h>
+
+#include <string>
+#include <util/utf8_string.hpp>
+
+namespace waybar::util {
+
+namespace {
+// Wide characters count as two, zero-width characters count as zero
+// Modifies str in-place (unless width = std::string::npos)
+// Returns the total width of the string pre-truncating
+size_t measure_and_truncate(std::string& str, size_t width = std::string::npos) {
+  if (str.length() == 0) return 0;
+
+  const gchar* trunc_end = nullptr;
+
+  size_t total_width = 0;
+
+  for (gchar *data = str.data(), *end = data + str.size(); data != nullptr;) {
+    gunichar c = g_utf8_get_char_validated(data, end - data);
+    if (c == -1U || c == -2U) {
+      // invalid unicode, treat string as ascii
+      if (width != std::string::npos && str.length() > width) str.resize(width);
+      return str.length();
+    } else if (g_unichar_iswide(c)) {
+      total_width += 2;
+    } else if (!g_unichar_iszerowidth(c) && c != 0xAD) {  // neither zero-width nor soft hyphen
+      total_width += 1;
+    }
+
+    data = g_utf8_find_next_char(data, end);
+    if (width != std::string::npos && total_width <= width && !g_unichar_isspace(c))
+      trunc_end = data;
+  }
+
+  if (trunc_end) str.resize(trunc_end - str.data());
+
+  return total_width;
+}
+}  // namespace
+
+size_t utf8_width(const std::string& str) {
+  return measure_and_truncate(const_cast<std::string&>(str));
+}
+
+void utf8_truncate(std::string& s, const std::string& ellipsis, size_t max_len) {
+  if (max_len == 0) {
+    s.resize(0);
+    return;
+  }
+  size_t len = measure_and_truncate(s, max_len);
+  if (len > max_len) {
+    size_t ellipsis_len = utf8_width(ellipsis);
+    if (max_len >= ellipsis_len) {
+      if (ellipsis_len) measure_and_truncate(s, max_len - ellipsis_len);
+      s += ellipsis;
+    } else {
+      s.resize(0);
+    }
+  }
+}
+}  // namespace waybar::util