In process of adding luaconsole.cpp

luprex/cpp/util.hpp

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+#ifndef UTIL_HPP
+#define UTIL_HPP
+
+#include <string>
+#include <set>
+#include <algorithm>
+#include <sstream>
+#include <tuple>
+#include <utility>
+
+namespace util {
+
+using stringvec = std::vector<std::string>;
+using stringset = std::set<std::string>;
+
+// trim from start
+static inline std::string ltrim(std::string s) {
+    s.erase(s.begin(), std::find_if(s.begin(), s.end(),
+            std::not1(std::ptr_fun<int, int>(std::isspace))));
+    return s;
+}
+
+// trim from end
+static inline std::string rtrim(std::string s) {
+    s.erase(std::find_if(s.rbegin(), s.rend(),
+            std::not1(std::ptr_fun<int, int>(std::isspace))).base(), s.end());
+    return s;
+}
+
+// trim from both ends
+static inline std::string trim(std::string s) {
+    return ltrim(rtrim(s));
+}
+
+const stringvec read_lines(const std::string &path);
+const stringvec trim_and_uncomment(const stringvec &lines);
+std::string get_file_fingerprint(const std::string &path);
+std::string get_file_contents(const std::string &fn);
+
+double distance_squared(double x1, double y1, double x2, double y2);
+
+// Return a pseudorandom number which is a hash function of A,B,C.
+uint32_t hash3(uint32_t a, uint32_t b, uint32_t c);
+
+// Returns a floating point value between lo and hi inclusive.
+double hash_to_float(double lo, double hi, uint32_t a, uint32_t b, uint32_t c);
+
+struct XYZ {
+    float x, y, z;
+    XYZ() { x=0; y=0; z=0; }
+    XYZ(float ix, float iy, float iz) { x=ix; y=iy; z=iz; }
+    bool operator ==(const XYZ &o) { return x==o.x && y == o.y && z==o.z; }
+};
+
+} // namespace util
+#endif // UTIL_HPP