use spdlog for logging in ws + unittest + remove un-needed mutex

third_party/spdlog/tests/utils.cpp

@@ -0,0 +1,67 @@
+#include "includes.h"
+
+void prepare_logdir()
+{
+    spdlog::drop_all();
+#ifdef _WIN32
+    system("if not exist logs mkdir logs");
+    system("del /F /Q logs\\*");
+#else
+    auto rv = system("mkdir -p logs");
+    if (rv != 0)
+    {
+        throw std::runtime_error("Failed to mkdir -p logs");
+    }
+    rv = system("rm -f logs/*");
+    if (rv != 0)
+    {
+        throw std::runtime_error("Failed to rm -f logs/*");
+    }
+#endif
+}
+
+std::string file_contents(const std::string &filename)
+{
+    std::ifstream ifs(filename);
+    if (!ifs)
+    {
+        throw std::runtime_error("Failed open file ");
+    }
+    return std::string((std::istreambuf_iterator<char>(ifs)), (std::istreambuf_iterator<char>()));
+}
+
+std::size_t count_lines(const std::string &filename)
+{
+    std::ifstream ifs(filename);
+    if (!ifs)
+    {
+        throw std::runtime_error("Failed open file ");
+    }
+
+    std::string line;
+    size_t counter = 0;
+    while (std::getline(ifs, line))
+        counter++;
+    return counter;
+}
+
+std::size_t get_filesize(const std::string &filename)
+{
+    std::ifstream ifs(filename, std::ifstream::ate | std::ifstream::binary);
+    if (!ifs)
+    {
+        throw std::runtime_error("Failed open file ");
+    }
+
+    return static_cast<std::size_t>(ifs.tellg());
+}
+
+// source: https://stackoverflow.com/a/2072890/192001
+bool ends_with(std::string const &value, std::string const &ending)
+{
+    if (ending.size() > value.size())
+    {
+        return false;
+    }
+    return std::equal(ending.rbegin(), ending.rend(), value.rbegin());
+}