added string header

src/cxutil/cxstring.h

@@ -0,0 +1,65 @@
+// Copyright (c) 2023 gk646
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+#define FINISHED
+#ifndef CXSTRUCTS_SRC_CXUTIL_CXSTRING_H_
+#define CXSTRUCTS_SRC_CXUTIL_CXSTRING_H_
+
+#include "../cxconfig.h"
+
+namespace cxstructs {
+
+template <typename T>
+inline auto str_parse_token(char** context, char delim) {
+  const char* start = *context;
+  while (**context != '\0' && **context != delim) {
+    (*context)++;
+  }
+  if constexpr (std::is_same_v<T, float>) {
+    auto result = std::strtof(start, const_cast<char**>(context));
+    if (**context == delim) (*context)++;
+    return result;
+  } else if constexpr (std::is_same_v<T, int>) {
+    auto result = (int)std::strtol(start, const_cast<char**>(context), 10);
+    if (**context == delim) (*context)++;
+    return result;
+  } else if constexpr (std::is_same_v<T, const char*>) {
+    const char* result = start;
+    if (**context == delim) {
+      *(*context) = '\0';
+      (*context)++;  // Move past the delimiter for the next call
+    }
+    return result;
+  }
+}
+
+#ifdef CX_INCLUDE_TESTS
+static void TEST_STRING() {
+  char buff[64] = "ParseME|0.3|55|-55|";
+  char* ptr = buff;
+  printf("%s\n", cxstructs::str_parse_token<const char*>(&ptr, '|'));
+  printf("%f\n", cxstructs::str_parse_token<float>(&ptr, '|'));
+  printf("%d\n", cxstructs::str_parse_token<int>(&ptr, '|'));
+  printf("%d\n", cxstructs::str_parse_token<int>(&ptr, '|'));
+}
+#endif
+
+}  // namespace cxstructs
+
+#endif  //CXSTRUCTS_SRC_CXUTIL_CXSTRING_H_