initial work on a wifi/http configuration module

components/wifi-manager/json.h

@@ -0,0 +1,47 @@
+/*
+@file json.h
+@brief handles very basic JSON with a minimal footprint on the system
+
+This code is a lightly modified version of cJSON 1.4.7. cJSON is licensed under the MIT license:
+Copyright (c) 2009 Dave Gamble
+
+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.
+
+@see https://github.com/DaveGamble/cJSON
+*/
+
+#ifndef JSON_H_INCLUDED
+#define JSON_H_INCLUDED
+#include <stdbool.h>
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Render the cstring provided to a JSON escaped version that can be printed.
+ * @param input the input buffer to be escaped.
+ * @param output_buffer the output buffer to write to. You must ensure it is big enough to contain the final string.
+ * @see cJSON equivlaent static cJSON_bool print_string_ptr(const unsigned char * const input, printbuffer * const output_buffer)
+ */
+bool json_print_string(const unsigned char *input, unsigned char *output_buffer);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* JSON_H_INCLUDED */