Move headers to include/openmc directory and openmc.h -> openmc/capi.h

include/openmc/string_utils.h

@@ -0,0 +1,42 @@
+#ifndef OPENMC_STRING_UTILS_H
+#define OPENMC_STRING_UTILS_H
+
+#include <algorithm>
+#include <string>
+#include <vector>
+
+namespace openmc {
+
+inline std::vector<std::string>
+split(const std::string& in)
+{
+  std::vector<std::string> out;
+
+  for (int i = 0; i < in.size(); ) {
+    // Increment i until we find a non-whitespace character.
+    if (std::isspace(in[i])) {
+      i++;
+
+    } else {
+      // Find the next whitespace character at j.
+      int j = i + 1;
+      while (j < in.size() && std::isspace(in[j]) == 0) {j++;}
+
+      // Push-back everything between i and j.
+      out.push_back(in.substr(i, j-i));
+      i = j + 1; // j is whitespace so leapfrog to j+1
+    }
+  }
+
+  return out;
+}
+
+inline bool
+ends_with(const std::string& value, const std::string& ending)
+{
+  if (ending.size() > value.size()) return false;
+  return std::equal(ending.rbegin(), ending.rend(), value.rbegin());
+}
+
+} // namespace openmc
+#endif // OPENMC_STRING_UTILS_H