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Dependencies:   NTPClient_NetServices mbed

RPCInterface/RPCFunction.cpp@0:05ccbd4f84f1, 2013-12-02 (annotated)

Committer:
hendrikvincent
Date:
Mon Dec 02 09:01:23 2013 +0000
Revision:
0:05ccbd4f84f1
eerste programma;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
hendrikvincent 0:05ccbd4f84f1 1 /**
hendrikvincent 0:05ccbd4f84f1 2 * @section LICENSE
hendrikvincent 0:05ccbd4f84f1 3 *Copyright (c) 2010 ARM Ltd.
hendrikvincent 0:05ccbd4f84f1 4 *
hendrikvincent 0:05ccbd4f84f1 5 *Permission is hereby granted, free of charge, to any person obtaining a copy
hendrikvincent 0:05ccbd4f84f1 6 *of this software and associated documentation files (the "Software"), to deal
hendrikvincent 0:05ccbd4f84f1 7 *in the Software without restriction, including without limitation the rights
hendrikvincent 0:05ccbd4f84f1 8 *to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
hendrikvincent 0:05ccbd4f84f1 9 *copies of the Software, and to permit persons to whom the Software is
hendrikvincent 0:05ccbd4f84f1 10 *furnished to do so, subject to the following conditions:
hendrikvincent 0:05ccbd4f84f1 11 *
hendrikvincent 0:05ccbd4f84f1 12 *The above copyright notice and this permission notice shall be included in
hendrikvincent 0:05ccbd4f84f1 13 *all copies or substantial portions of the Software.
hendrikvincent 0:05ccbd4f84f1 14 *
hendrikvincent 0:05ccbd4f84f1 15 *THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
hendrikvincent 0:05ccbd4f84f1 16 *IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
hendrikvincent 0:05ccbd4f84f1 17 *FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
hendrikvincent 0:05ccbd4f84f1 18 *AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
hendrikvincent 0:05ccbd4f84f1 19 *LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
hendrikvincent 0:05ccbd4f84f1 20 *OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
hendrikvincent 0:05ccbd4f84f1 21 *THE SOFTWARE.
hendrikvincent 0:05ccbd4f84f1 22 *
hendrikvincent 0:05ccbd4f84f1 23 * @section Description
hendrikvincent 0:05ccbd4f84f1 24 *This class provides an object which can be called over RPC to run the function which is attached to it.
hendrikvincent 0:05ccbd4f84f1 25 *
hendrikvincent 0:05ccbd4f84f1 26 */
hendrikvincent 0:05ccbd4f84f1 27 #include "RPCFunction.h"
hendrikvincent 0:05ccbd4f84f1 28 #include "rpc.h"
hendrikvincent 0:05ccbd4f84f1 29
hendrikvincent 0:05ccbd4f84f1 30 //Parse a char argument without delimiting by anything that is non alphanumeric - based on version in rpc.h line 153
hendrikvincent 0:05ccbd4f84f1 31 char *parse_arg_char(const char *arg, const char **next) {
hendrikvincent 0:05ccbd4f84f1 32 const char *ptr = arg;
hendrikvincent 0:05ccbd4f84f1 33 char *res = NULL;
hendrikvincent 0:05ccbd4f84f1 34 if(*arg == '"') {
hendrikvincent 0:05ccbd4f84f1 35 /* quoted string */
hendrikvincent 0:05ccbd4f84f1 36 ptr = ++arg;
hendrikvincent 0:05ccbd4f84f1 37 int len = 0;
hendrikvincent 0:05ccbd4f84f1 38 /* find the end (and length) of the quoted string */
hendrikvincent 0:05ccbd4f84f1 39 for(char c = *ptr; c != 0 && c != '"'; c = *++ptr) {
hendrikvincent 0:05ccbd4f84f1 40 len++;
hendrikvincent 0:05ccbd4f84f1 41 if(c == '\\') {
hendrikvincent 0:05ccbd4f84f1 42 ptr++;
hendrikvincent 0:05ccbd4f84f1 43 }
hendrikvincent 0:05ccbd4f84f1 44 }
hendrikvincent 0:05ccbd4f84f1 45 /* copy the quoted string, and unescape characters */
hendrikvincent 0:05ccbd4f84f1 46 if(len != 0) {
hendrikvincent 0:05ccbd4f84f1 47 res = new char[len+1];
hendrikvincent 0:05ccbd4f84f1 48 char *resptr = res;
hendrikvincent 0:05ccbd4f84f1 49 while(arg != ptr) {
hendrikvincent 0:05ccbd4f84f1 50 *resptr++ = parse_char(arg, &arg);
hendrikvincent 0:05ccbd4f84f1 51 }
hendrikvincent 0:05ccbd4f84f1 52 *resptr = 0;
hendrikvincent 0:05ccbd4f84f1 53 }
hendrikvincent 0:05ccbd4f84f1 54 } else {
hendrikvincent 0:05ccbd4f84f1 55 /* unquoted string */
hendrikvincent 0:05ccbd4f84f1 56 while(isalnum(*ptr) || isgraph(*ptr) || *ptr=='_' || *ptr == ' ') { //Edit this line to change which types of characters are allowed and which delimit
hendrikvincent 0:05ccbd4f84f1 57 ptr++;
hendrikvincent 0:05ccbd4f84f1 58 }
hendrikvincent 0:05ccbd4f84f1 59 int len = ptr-arg;
hendrikvincent 0:05ccbd4f84f1 60 if(len!=0) { //Chnages made to just pass whole string with no next arg or delimiters, these changes just removes space at the beginning
hendrikvincent 0:05ccbd4f84f1 61 res = new char[len]; //was len+1
hendrikvincent 0:05ccbd4f84f1 62 memcpy(res, arg + 1, len - 1); // was arg, len
hendrikvincent 0:05ccbd4f84f1 63 res[len-1] = 0; //was len
hendrikvincent 0:05ccbd4f84f1 64 }
hendrikvincent 0:05ccbd4f84f1 65 }
hendrikvincent 0:05ccbd4f84f1 66
hendrikvincent 0:05ccbd4f84f1 67 if(next != NULL) {
hendrikvincent 0:05ccbd4f84f1 68 *next = ptr;
hendrikvincent 0:05ccbd4f84f1 69 }
hendrikvincent 0:05ccbd4f84f1 70 return res;
hendrikvincent 0:05ccbd4f84f1 71 }
hendrikvincent 0:05ccbd4f84f1 72
hendrikvincent 0:05ccbd4f84f1 73 //Custom rpc method caller for execute so that the string will not be delimited by anything
hendrikvincent 0:05ccbd4f84f1 74 //See line 436 of rpc.h
hendrikvincent 0:05ccbd4f84f1 75 void rpc_method_caller_run(Base *this_ptr, const char *arguments, char *result) {
hendrikvincent 0:05ccbd4f84f1 76
hendrikvincent 0:05ccbd4f84f1 77 const char *next = arguments;
hendrikvincent 0:05ccbd4f84f1 78 char* arg1 = parse_arg_char(next,NULL);
hendrikvincent 0:05ccbd4f84f1 79
hendrikvincent 0:05ccbd4f84f1 80 char * res = (static_cast<RPCFunction*>(this_ptr)->run)(arg1);
hendrikvincent 0:05ccbd4f84f1 81 if(result != NULL) {
hendrikvincent 0:05ccbd4f84f1 82 write_result<char*>(res, result);
hendrikvincent 0:05ccbd4f84f1 83 }
hendrikvincent 0:05ccbd4f84f1 84 }
hendrikvincent 0:05ccbd4f84f1 85
hendrikvincent 0:05ccbd4f84f1 86 RPCFunction::RPCFunction(void(*f)(char*, char*), const char* name) : Base(name){
hendrikvincent 0:05ccbd4f84f1 87 _ftr = f;
hendrikvincent 0:05ccbd4f84f1 88 }
hendrikvincent 0:05ccbd4f84f1 89
hendrikvincent 0:05ccbd4f84f1 90
hendrikvincent 0:05ccbd4f84f1 91 //Just run the attached function using the string thats in private memory - or just using null values,
hendrikvincent 0:05ccbd4f84f1 92 char * RPCFunction::run(char * input){
hendrikvincent 0:05ccbd4f84f1 93 strcpy(_input, input);
hendrikvincent 0:05ccbd4f84f1 94 (*_ftr)(_input,_output);
hendrikvincent 0:05ccbd4f84f1 95 return(_output);
hendrikvincent 0:05ccbd4f84f1 96 }
hendrikvincent 0:05ccbd4f84f1 97
hendrikvincent 0:05ccbd4f84f1 98 //Just read the output string
hendrikvincent 0:05ccbd4f84f1 99 char* RPCFunction::read(){
hendrikvincent 0:05ccbd4f84f1 100 return(_output);
hendrikvincent 0:05ccbd4f84f1 101 }
hendrikvincent 0:05ccbd4f84f1 102
hendrikvincent 0:05ccbd4f84f1 103
hendrikvincent 0:05ccbd4f84f1 104 #ifdef MBED_RPC
hendrikvincent 0:05ccbd4f84f1 105 const rpc_method *RPCFunction::get_rpc_methods() {
hendrikvincent 0:05ccbd4f84f1 106 static const rpc_method rpc_methods[] = {
hendrikvincent 0:05ccbd4f84f1 107 { "run", rpc_method_caller_run }, //Run using custom caller, all characters accepted in string
hendrikvincent 0:05ccbd4f84f1 108 { "read", rpc_method_caller<char*, RPCFunction, &RPCFunction::read> },
hendrikvincent 0:05ccbd4f84f1 109 RPC_METHOD_SUPER(Base)
hendrikvincent 0:05ccbd4f84f1 110 };
hendrikvincent 0:05ccbd4f84f1 111 return rpc_methods;
hendrikvincent 0:05ccbd4f84f1 112 }
hendrikvincent 0:05ccbd4f84f1 113
hendrikvincent 0:05ccbd4f84f1 114 #endif