move util to implementation file

1 files changed, 116 insertions, 0 deletions

diff --git a/util.cpp b/util.cpp
new file mode 100644
index 0000000..f5cb39b
--- /dev/null
+++ b/util.cpp
@@ -0,0 +1,116 @@
+#include "util.hpp"
+
+Semaphore::Semaphore(int count)
+    : m_count(count) {}
+
+void Semaphore::notify() {
+    std::unique_lock<std::mutex> lock(m_mutex);
+    m_count++;
+    lock.unlock();
+    m_cv.notify_one();
+}
+
+void Semaphore::wait() {
+    std::unique_lock<std::mutex> lock(m_mutex);
+    while (m_count == 0)
+        m_cv.wait(lock);
+    m_count--;
+}
+
+void LaunchBrowser(Glib::ustring url) {
+    GError *err = nullptr;
+    if (!gtk_show_uri_on_window(nullptr, url.c_str(), GDK_CURRENT_TIME, &err))
+        printf("failed to open uri: %s\n", err->message);
+}
+
+void GetImageDimensions(int inw, int inh, int &outw, int &outh, int clampw, int clamph) {
+    const auto frac = static_cast<float>(inw) / inh;
+
+    outw = inw;
+    outh = inh;
+
+    if (outw > clampw) {
+        outw = clampw;
+        outh = clampw / frac;
+    }
+
+    if (outh > clamph) {
+        outh = clamph;
+        outw = clamph * frac;
+    }
+}
+
+std::vector<uint8_t> ReadWholeFile(std::string path) {
+    std::vector<uint8_t> ret;
+    FILE *fp = std::fopen(path.c_str(), "rb");
+    if (fp == nullptr)
+        return ret;
+    std::fseek(fp, 0, SEEK_END);
+    int len = std::ftell(fp);
+    std::rewind(fp);
+    ret.resize(len);
+    std::fread(ret.data(), 1, ret.size(), fp);
+    std::fclose(fp);
+    return ret;
+}
+
+std::string HumanReadableBytes(uint64_t bytes) {
+    constexpr static const char *x[] = { "B", "KB", "MB", "GB", "TB" };
+    int order = 0;
+    while (bytes >= 1000 && order < 4) { // 4=len(x)-1
+        order++;
+        bytes /= 1000;
+    }
+    return std::to_string(bytes) + x[order];
+}
+
+std::string IntToCSSColor(int color) {
+    int r = (color & 0xFF0000) >> 16;
+    int g = (color & 0x00FF00) >> 8;
+    int b = (color & 0x0000FF) >> 0;
+    std::stringstream ss;
+    ss << std::hex << std::setw(2) << std::setfill('0') << r
+       << std::hex << std::setw(2) << std::setfill('0') << g
+       << std::hex << std::setw(2) << std::setfill('0') << b;
+    return ss.str();
+}
+
+void AddWidgetMenuHandler(Gtk::Widget *widget, Gtk::Menu &menu) {
+    widget->signal_button_press_event().connect([&menu](GdkEventButton *ev) -> bool {
+        if (ev->type == GDK_BUTTON_PRESS && ev->button == GDK_BUTTON_SECONDARY) {
+            menu.popup_at_pointer(reinterpret_cast<const GdkEvent *>(ev));
+            return true;
+        }
+        return false;
+        // clang-format off
+    }, false);
+    // clang-format on
+}
+
+std::vector<std::string> StringSplit(const std::string &str, const char *delim) {
+    std::vector<std::string> parts;
+    char *token = std::strtok(const_cast<char *>(str.c_str()), delim);
+    while (token != nullptr) {
+        parts.push_back(token);
+        token = std::strtok(nullptr, delim);
+    }
+    return parts;
+}
+
+std::string GetExtension(std::string url) {
+    url = StringSplit(url, "?")[0];
+    url = StringSplit(url, "/").back();
+    return url.find(".") != std::string::npos ? url.substr(url.find_last_of(".")) : "";
+}
+
+bool IsURLViewableImage(const std::string &url) {
+    const auto ext = GetExtension(url);
+    static const char *exts[] = { ".jpeg",
+                                  ".jpg",
+                                  ".png", nullptr };
+    const char *str = ext.c_str();
+    for (int i = 0; exts[i] != nullptr; i++)
+        if (strcmp(str, exts[i]) == 0)
+            return true;
+    return false;
+}