Hill Kim / W5200Interface

MQTT client test with W5200 ethernet shield

Dependents:   IBMIoTClientEthernetExample_W5200

Fork of W5500Interface by W5500-Ethernet-Interface Makers

DNSClient/pico_string.h@11:313e091ab3f9, 2014-12-25 (annotated)

Committer:
hillkim7
Date:
Thu Dec 25 11:18:46 2014 +0000
Revision:
11:313e091ab3f9
Parent:
0:e11e8793c3ce 
The IBM MQTT client demo program that is tested with Nucleo F401 and Seeedstudio Ethernet Shield. It is based on Wiznet sample program.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Bongjun 0:e11e8793c3ce 1 // pico_string.h 2013/8/27
Bongjun 0:e11e8793c3ce 2 #pragma once
Bongjun 0:e11e8793c3ce 3 class pico_string {
Bongjun 0:e11e8793c3ce 4 public:
Bongjun 0:e11e8793c3ce 5 pico_string(){
Bongjun 0:e11e8793c3ce 6 _len = 0;
Bongjun 0:e11e8793c3ce 7 _buf = (char*)malloc(1);
Bongjun 0:e11e8793c3ce 8 if (_buf) {
Bongjun 0:e11e8793c3ce 9 _buf[0] = '\0';
Bongjun 0:e11e8793c3ce 10 }
Bongjun 0:e11e8793c3ce 11 }
Bongjun 0:e11e8793c3ce 12 ~pico_string() {
Bongjun 0:e11e8793c3ce 13 if (_buf) {
Bongjun 0:e11e8793c3ce 14 free(_buf);
Bongjun 0:e11e8793c3ce 15 }
Bongjun 0:e11e8793c3ce 16 }
Bongjun 0:e11e8793c3ce 17 bool empty() {
Bongjun 0:e11e8793c3ce 18 return _len == 0;
Bongjun 0:e11e8793c3ce 19 }
Bongjun 0:e11e8793c3ce 20 void append(const char* s, int len) {
Bongjun 0:e11e8793c3ce 21 if (_buf == NULL) {
Bongjun 0:e11e8793c3ce 22 return;
Bongjun 0:e11e8793c3ce 23 }
Bongjun 0:e11e8793c3ce 24 char* p = (char*)malloc(_len+len+1);
Bongjun 0:e11e8793c3ce 25 if (p == NULL) {
Bongjun 0:e11e8793c3ce 26 return;
Bongjun 0:e11e8793c3ce 27 }
Bongjun 0:e11e8793c3ce 28 memcpy(p, _buf, _len);
Bongjun 0:e11e8793c3ce 29 memcpy(p+_len, s, len);
Bongjun 0:e11e8793c3ce 30 p[_len+len] = '\0';
Bongjun 0:e11e8793c3ce 31 free(_buf);
Bongjun 0:e11e8793c3ce 32 _buf = p;
Bongjun 0:e11e8793c3ce 33 }
Bongjun 0:e11e8793c3ce 34 void append(const char* s) {
Bongjun 0:e11e8793c3ce 35 append(s, strlen(s));
Bongjun 0:e11e8793c3ce 36 }
Bongjun 0:e11e8793c3ce 37 char* c_str() {
Bongjun 0:e11e8793c3ce 38 if (_buf) {
Bongjun 0:e11e8793c3ce 39 return _buf;
Bongjun 0:e11e8793c3ce 40 }
Bongjun 0:e11e8793c3ce 41 return "";
Bongjun 0:e11e8793c3ce 42 }
Bongjun 0:e11e8793c3ce 43 private:
Bongjun 0:e11e8793c3ce 44 char* _buf;
Bongjun 0:e11e8793c3ce 45 int _len;
Bongjun 0:e11e8793c3ce 46 };