5 files changed, 138 insertions, 0 deletions
diff --git a/core/utils/CMakeLists.txt b/core/utils/CMakeLists.txt
new file mode 100644
index 0000000..4f96261
--- /dev/null
+++ b/core/utils/CMakeLists.txt
@@ -0,0 +1,5 @@
+target_sources(core PRIVATE
+    "${CMAKE_CURRENT_LIST_DIR}/epoch.cc"
+    "${CMAKE_CURRENT_LIST_DIR}/epoch.hh"
+    "${CMAKE_CURRENT_LIST_DIR}/string.cc"
+    "${CMAKE_CURRENT_LIST_DIR}/string.hh")
diff --git a/core/utils/epoch.cc b/core/utils/epoch.cc
new file mode 100644
index 0000000..36bdb79
--- /dev/null
+++ b/core/utils/epoch.cc
@@ -0,0 +1,39 @@
+#include "core/pch.hh"
+
+#include "core/utils/epoch.hh"
+
+std::uint64_t utils::unix_seconds(void)
+{
+    const auto elapsed = std::chrono::system_clock::now().time_since_epoch();
+    return static_cast<std::uint64_t>(std::chrono::duration_cast<std::chrono::seconds>(elapsed).count());
+}
+
+std::uint64_t utils::unix_milliseconds(void)
+{
+    const auto elapsed = std::chrono::system_clock::now().time_since_epoch();
+    return static_cast<std::uint64_t>(std::chrono::duration_cast<std::chrono::milliseconds>(elapsed).count());
+}
+
+std::uint64_t utils::unix_microseconds(void)
+{
+    const auto elapsed = std::chrono::system_clock::now().time_since_epoch();
+    return static_cast<std::uint64_t>(std::chrono::duration_cast<std::chrono::microseconds>(elapsed).count());
+}
+
+std::int64_t utils::signed_unix_seconds(void)
+{
+    const auto elapsed = std::chrono::system_clock::now().time_since_epoch();
+    return static_cast<std::int64_t>(std::chrono::duration_cast<std::chrono::seconds>(elapsed).count());
+}
+
+std::int64_t utils::signed_unix_milliseconds(void)
+{
+    const auto elapsed = std::chrono::system_clock::now().time_since_epoch();
+    return static_cast<std::int64_t>(std::chrono::duration_cast<std::chrono::milliseconds>(elapsed).count());
+}
+
+std::int64_t utils::signed_unix_microseconds(void)
+{
+    const auto elapsed = std::chrono::system_clock::now().time_since_epoch();
+    return static_cast<std::int64_t>(std::chrono::duration_cast<std::chrono::microseconds>(elapsed).count());
+}
diff --git a/core/utils/epoch.hh b/core/utils/epoch.hh
new file mode 100644
index 0000000..1cd7f43
--- /dev/null
+++ b/core/utils/epoch.hh
@@ -0,0 +1,19 @@
+#ifndef CORE_UTILS_EPOCH_HH
+#define CORE_UTILS_EPOCH_HH 1
+#pragma once
+
+namespace utils
+{
+std::uint64_t unix_seconds(void);
+std::uint64_t unix_milliseconds(void);
+std::uint64_t unix_microseconds(void);
+} // namespace utils
+
+namespace utils
+{
+std::int64_t signed_unix_seconds(void);
+std::int64_t signed_unix_milliseconds(void);
+std::int64_t signed_unix_microseconds(void);
+} // namespace utils
+
+#endif // CORE_UTILS_EPOCH_HH
diff --git a/core/utils/string.cc b/core/utils/string.cc
new file mode 100644
index 0000000..5497cec
--- /dev/null
+++ b/core/utils/string.cc
@@ -0,0 +1,54 @@
+#include "core/pch.hh"
+
+#include "core/utils/string.hh"
+
+constexpr static const char* WHITESPACE_CHARS = " \t\r\n";
+
+bool utils::is_whitespace(const std::string& string)
+{
+    if(string.find_first_not_of(WHITESPACE_CHARS) == std::string::npos) {
+        return true;
+    } else if((string.size() == 1) && string[0] == 0x00) {
+        return true;
+    } else {
+        return string.empty();
+    }
+}
+
+std::string utils::join(const std::vector<std::string>& strings, const std::string& separator)
+{
+    std::ostringstream stream;
+    for(const std::string& str : strings)
+        stream << str << separator;
+    return stream.str();
+}
+
+std::vector<std::string> utils::split(const std::string& string, const std::string& separator)
+{
+    std::size_t pos = 0;
+    std::size_t prev = 0;
+    std::vector<std::string> result;
+
+    while((pos = string.find(separator, prev)) != std::string::npos) {
+        result.push_back(string.substr(prev, pos - prev));
+        prev = pos + separator.length();
+    }
+
+    if(prev <= string.length()) {
+        result.push_back(string.substr(prev, string.length() - prev));
+    }
+
+    return result;
+}
+
+std::string utils::trim_whitespace(const std::string& string)
+{
+    auto su = string.find_first_not_of(WHITESPACE_CHARS);
+    auto sv = string.find_last_not_of(WHITESPACE_CHARS);
+
+    if(su == std::string::npos) {
+        return std::string();
+    } else {
+        return string.substr(su, sv - su + 1);
+    }
+}
diff --git a/core/utils/string.hh b/core/utils/string.hh
new file mode 100644
index 0000000..3ba56a0
--- /dev/null
+++ b/core/utils/string.hh
@@ -0,0 +1,21 @@
+#ifndef CORE_UTILS_STRING_HH
+#define CORE_UTILS_STRING_HH 1
+#pragma once
+
+namespace utils
+{
+bool is_whitespace(const std::string& string);
+} // namespace utils
+
+namespace utils
+{
+std::string join(const std::vector<std::string>& strings, const std::string& separator);
+std::vector<std::string> split(const std::string& string, const std::string& separator);
+} // namespace utils
+
+namespace utils
+{
+std::string trim_whitespace(const std::string& string);
+} // namespace utils
+
+#endif // CORE_UTILS_STRING_HH