add coding guidelines

libs/libks/CODING_GUIDELINES

+/*
+ * Copyright (c) 2007-2017, FreeSWITCH Solutions LLC
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 
+ * * Neither the name of the original author; nor the names of any contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ * 
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER
+ * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+Functions that create and destroy objects always take pointer to pointer of that type.
+Spaces after loop and conditional operators while, for, if etc.
+Newlines after one or more declarations.
+Newlines before and after loops.
+Newlines before returns.
+One-Line if/else sparingly only when very obvious exit from loop or return.
+Use brackets even when not necessary other than the one-liners above.
+Align the * in pointers to the type or function name (e.g char *foo, char *some_func(char *data) )
+Use typedefs for structs especially public-facing.
+Only use // style-comments on tempory comments that will probably be removed eventually.
+Add the emacs/vi comment to the bottom of every file.
+Use Doxygen for function args.
+Tabs not spaces.
+*/
+
+KS_DECLARE(ks_status_t) function_example(somedata_t **data, ks_pool_t *pool)
+{
+	int var = 3, x = 0;
+
+	if (!pool) return KS_STATUS_FAIL;
+
+	for (x = 0; x < 100; x++) {
+		var = += x;
+	}
+
+	if (var > 20) {
+		var *= 2;
+	} else {
+		var *= 3;
+	}
+
+	while (var) {
+		var--;
+	}
+
+	if (var) {
+		*data = ks_pool_alloc(pool, sizeof(*data));
+		(*data)->pool = pool;
+
+		return KS_STATUS_SUCCESS;
+
+	} else {
+		*data = NULL;
+
+		return KS_STATUS_FAIL;
+	}
+
+}
+
+
+/* For Emacs:
+ * Local Variables:
+ * mode:c
+ * indent-tabs-mode:t
+ * tab-width:4
+ * c-basic-offset:4
+ * End:
+ * For VIM:
+ * vim:set softtabstop=4 shiftwidth=4 tabstop=4 noet:
+ */