Bram Van Reusel / Mbed 2 deprecated Labbview

Labview

Dependencies:   C12832_lcd LCD_fonts LM75B analogintest3 MMA7660 mbed

Fork of analogintest3 by Peter Mertens

RPCInterface/RPCFunction.cpp@1:6c1caefc30c3, 2015-05-19 (annotated)

Committer:
Bramvr
Date:
Tue May 19 11:20:51 2015 +0000
Revision:
1:6c1caefc30c3
Parent:
0:e4782112c3fd 
Labview

Who changed what in which revision?

UserRevisionLine numberNew contents of line
u0068206 0:e4782112c3fd 1 /**
u0068206 0:e4782112c3fd 2 * @section LICENSE
u0068206 0:e4782112c3fd 3 *Copyright (c) 2010 ARM Ltd.
u0068206 0:e4782112c3fd 4 *
u0068206 0:e4782112c3fd 5 *Permission is hereby granted, free of charge, to any person obtaining a copy
u0068206 0:e4782112c3fd 6 *of this software and associated documentation files (the "Software"), to deal
u0068206 0:e4782112c3fd 7 *in the Software without restriction, including without limitation the rights
u0068206 0:e4782112c3fd 8 *to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
u0068206 0:e4782112c3fd 9 *copies of the Software, and to permit persons to whom the Software is
u0068206 0:e4782112c3fd 10 *furnished to do so, subject to the following conditions:
u0068206 0:e4782112c3fd 11 *
u0068206 0:e4782112c3fd 12 *The above copyright notice and this permission notice shall be included in
u0068206 0:e4782112c3fd 13 *all copies or substantial portions of the Software.
u0068206 0:e4782112c3fd 14 *
u0068206 0:e4782112c3fd 15 *THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
u0068206 0:e4782112c3fd 16 *IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
u0068206 0:e4782112c3fd 17 *FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
u0068206 0:e4782112c3fd 18 *AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
u0068206 0:e4782112c3fd 19 *LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
u0068206 0:e4782112c3fd 20 *OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
u0068206 0:e4782112c3fd 21 *THE SOFTWARE.
u0068206 0:e4782112c3fd 22 *
u0068206 0:e4782112c3fd 23 * @section Description
u0068206 0:e4782112c3fd 24 *This class provides an object which can be called over RPC to run the function which is attached to it.
u0068206 0:e4782112c3fd 25 *
u0068206 0:e4782112c3fd 26 */
u0068206 0:e4782112c3fd 27 #include "RPCFunction.h"
u0068206 0:e4782112c3fd 28 #include "rpc.h"
u0068206 0:e4782112c3fd 29
u0068206 0:e4782112c3fd 30 //Parse a char argument without delimiting by anything that is non alphanumeric - based on version in rpc.h line 153
u0068206 0:e4782112c3fd 31 char *parse_arg_char(const char *arg, const char **next) {
u0068206 0:e4782112c3fd 32 const char *ptr = arg;
u0068206 0:e4782112c3fd 33 char *res = NULL;
u0068206 0:e4782112c3fd 34 if(*arg == '"') {
u0068206 0:e4782112c3fd 35 /* quoted string */
u0068206 0:e4782112c3fd 36 ptr = ++arg;
u0068206 0:e4782112c3fd 37 int len = 0;
u0068206 0:e4782112c3fd 38 /* find the end (and length) of the quoted string */
u0068206 0:e4782112c3fd 39 for(char c = *ptr; c != 0 && c != '"'; c = *++ptr) {
u0068206 0:e4782112c3fd 40 len++;
u0068206 0:e4782112c3fd 41 if(c == '\\') {
u0068206 0:e4782112c3fd 42 ptr++;
u0068206 0:e4782112c3fd 43 }
u0068206 0:e4782112c3fd 44 }
u0068206 0:e4782112c3fd 45 /* copy the quoted string, and unescape characters */
u0068206 0:e4782112c3fd 46 if(len != 0) {
u0068206 0:e4782112c3fd 47 res = new char[len+1];
u0068206 0:e4782112c3fd 48 char *resptr = res;
u0068206 0:e4782112c3fd 49 while(arg != ptr) {
u0068206 0:e4782112c3fd 50 *resptr++ = parse_char(arg, &arg);
u0068206 0:e4782112c3fd 51 }
u0068206 0:e4782112c3fd 52 *resptr = 0;
u0068206 0:e4782112c3fd 53 }
u0068206 0:e4782112c3fd 54 } else {
u0068206 0:e4782112c3fd 55 /* unquoted string */
u0068206 0:e4782112c3fd 56 while(isalnum(*ptr) || isgraph(*ptr) || *ptr=='_' || *ptr == ' ') { //Edit this line to change which types of characters are allowed and which delimit
u0068206 0:e4782112c3fd 57 ptr++;
u0068206 0:e4782112c3fd 58 }
u0068206 0:e4782112c3fd 59 int len = ptr-arg;
u0068206 0:e4782112c3fd 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
u0068206 0:e4782112c3fd 61 res = new char[len]; //was len+1
u0068206 0:e4782112c3fd 62 memcpy(res, arg + 1, len - 1); // was arg, len
u0068206 0:e4782112c3fd 63 res[len-1] = 0; //was len
u0068206 0:e4782112c3fd 64 }
u0068206 0:e4782112c3fd 65 }
u0068206 0:e4782112c3fd 66
u0068206 0:e4782112c3fd 67 if(next != NULL) {
u0068206 0:e4782112c3fd 68 *next = ptr;
u0068206 0:e4782112c3fd 69 }
u0068206 0:e4782112c3fd 70 return res;
u0068206 0:e4782112c3fd 71 }
u0068206 0:e4782112c3fd 72
u0068206 0:e4782112c3fd 73 //Custom rpc method caller for execute so that the string will not be delimited by anything
u0068206 0:e4782112c3fd 74 //See line 436 of rpc.h
u0068206 0:e4782112c3fd 75 void rpc_method_caller_run(Base *this_ptr, const char *arguments, char *result) {
u0068206 0:e4782112c3fd 76
u0068206 0:e4782112c3fd 77 const char *next = arguments;
u0068206 0:e4782112c3fd 78 char* arg1 = parse_arg_char(next,NULL);
u0068206 0:e4782112c3fd 79
u0068206 0:e4782112c3fd 80 char * res = (static_cast<RPCFunction*>(this_ptr)->run)(arg1);
u0068206 0:e4782112c3fd 81 if(result != NULL) {
u0068206 0:e4782112c3fd 82 write_result<char*>(res, result);
u0068206 0:e4782112c3fd 83 }
u0068206 0:e4782112c3fd 84 delete arg1; // Seems to stop a memory leak issue which prevented an RPCFunction being run more than ~500 times
u0068206 0:e4782112c3fd 85 }
u0068206 0:e4782112c3fd 86
u0068206 0:e4782112c3fd 87 RPCFunction::RPCFunction(void(*f)(char*, char*), const char* name) : Base(name){
u0068206 0:e4782112c3fd 88 _ftr = f;
u0068206 0:e4782112c3fd 89 }
u0068206 0:e4782112c3fd 90
u0068206 0:e4782112c3fd 91
u0068206 0:e4782112c3fd 92 //Just run the attached function using the string thats in private memory - or just using null values,
u0068206 0:e4782112c3fd 93 char * RPCFunction::run(char * input){
u0068206 0:e4782112c3fd 94 strcpy(_input, input);
u0068206 0:e4782112c3fd 95 (*_ftr)(_input,_output);
u0068206 0:e4782112c3fd 96 return(_output);
u0068206 0:e4782112c3fd 97 }
u0068206 0:e4782112c3fd 98
u0068206 0:e4782112c3fd 99 //Just read the output string
u0068206 0:e4782112c3fd 100 char* RPCFunction::read(){
u0068206 0:e4782112c3fd 101 return(_output);
u0068206 0:e4782112c3fd 102 }
u0068206 0:e4782112c3fd 103
u0068206 0:e4782112c3fd 104
u0068206 0:e4782112c3fd 105 #ifdef MBED_RPC
u0068206 0:e4782112c3fd 106 const rpc_method *RPCFunction::get_rpc_methods() {
u0068206 0:e4782112c3fd 107 static const rpc_method rpc_methods[] = {
u0068206 0:e4782112c3fd 108 { "run", rpc_method_caller_run }, //Run using custom caller, all characters accepted in string
u0068206 0:e4782112c3fd 109 { "read", rpc_method_caller<char*, RPCFunction, &RPCFunction::read> },
u0068206 0:e4782112c3fd 110 RPC_METHOD_SUPER(Base)
u0068206 0:e4782112c3fd 111 };
u0068206 0:e4782112c3fd 112 return rpc_methods;
u0068206 0:e4782112c3fd 113 }
u0068206 0:e4782112c3fd 114
u0068206 0:e4782112c3fd 115 #endif