Doug Anson / endpoint_core

Core Base Classes for the Light Endpoints

Dependencies:   BufferedSerial

Dependents:   mbed_mqtt_endpoint_ublox_ethernet mbed_mqtt_endpoint_ublox_cellular mbed_nsp_endpoint_ublox_cellular mbed_nsp_endpoint_ublox_ethernet ... more

Preferences.cpp@118:c8a80adfe90d, 2014-03-19 (annotated)

Committer:
ansond
Date:
Wed Mar 19 21:36:48 2014 +0000
Revision:
118:c8a80adfe90d
Parent:
117:34f0d83dcabb
Child:
120:edf33bd41e4f
updates - removed ConfigFile

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ansond 112:1fb53d4729af 1 /* Copyright C2013 Doug Anson, MIT License
ansond 112:1fb53d4729af 2 *
ansond 112:1fb53d4729af 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
ansond 112:1fb53d4729af 4 * and associated documentation files the "Software", to deal in the Software without restriction,
ansond 112:1fb53d4729af 5 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
ansond 112:1fb53d4729af 6 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
ansond 112:1fb53d4729af 7 * furnished to do so, subject to the following conditions:
ansond 112:1fb53d4729af 8 *
ansond 112:1fb53d4729af 9 * The above copyright notice and this permission notice shall be included in all copies or
ansond 112:1fb53d4729af 10 * substantial portions of the Software.
ansond 112:1fb53d4729af 11 *
ansond 112:1fb53d4729af 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
ansond 112:1fb53d4729af 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
ansond 112:1fb53d4729af 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
ansond 112:1fb53d4729af 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
ansond 112:1fb53d4729af 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
ansond 112:1fb53d4729af 17 */
ansond 112:1fb53d4729af 18
ansond 112:1fb53d4729af 19 #include "mbed.h"
ansond 112:1fb53d4729af 20 #include "Preferences.h"
ansond 112:1fb53d4729af 21
ansond 116:428281cb5066 22 LocalFileSystem local("local");
ansond 116:428281cb5066 23
ansond 112:1fb53d4729af 24 // default constructor
ansond 112:1fb53d4729af 25 Preferences::Preferences(ErrorHandler *error_handler) {
ansond 112:1fb53d4729af 26 this->m_error_handler = error_handler;
ansond 112:1fb53d4729af 27 this->initialize();
ansond 112:1fb53d4729af 28 }
ansond 112:1fb53d4729af 29
ansond 112:1fb53d4729af 30 // destructor
ansond 112:1fb53d4729af 31 Preferences::~Preferences() {
ansond 112:1fb53d4729af 32 }
ansond 112:1fb53d4729af 33
ansond 112:1fb53d4729af 34 // initialize the preferences from the preferences file
ansond 112:1fb53d4729af 35 bool Preferences::initialize() {
ansond 118:c8a80adfe90d 36 char buffer[PREFERENCE_NAME_LEN + PREFERENCE_NAME_LEN + 10];
ansond 112:1fb53d4729af 37 bool success = true;
ansond 112:1fb53d4729af 38
ansond 118:c8a80adfe90d 39 // initialize the memory buffers and count
ansond 118:c8a80adfe90d 40 for(int i=0;i<MAX_NUM_PREFERENCES;++i) {
ansond 118:c8a80adfe90d 41 memset(this->m_names[i],0,PREFERENCE_NAME_LEN+1);
ansond 118:c8a80adfe90d 42 memset(this->m_values[i],0,PREFERENCE_VALUE_LEN+1);
ansond 118:c8a80adfe90d 43 }
ansond 118:c8a80adfe90d 44 this->m_num_preferences = 0;
ansond 118:c8a80adfe90d 45
ansond 118:c8a80adfe90d 46 // read and open the config file
ansond 118:c8a80adfe90d 47 FILE *fp = fopen(PREFERENCES_FILE,"r");
ansond 118:c8a80adfe90d 48 if (fp != NULL) {
ansond 118:c8a80adfe90d 49 // read in the first line
ansond 118:c8a80adfe90d 50 memset(buffer,0,PREFERENCE_NAME_LEN + PREFERENCE_NAME_LEN + 10);
ansond 118:c8a80adfe90d 51 int n = fscanf(fp,"%s",buffer);
ansond 118:c8a80adfe90d 52
ansond 118:c8a80adfe90d 53 // loop and read each line
ansond 118:c8a80adfe90d 54 while(n != EOF) {
ansond 118:c8a80adfe90d 55 // replace the equals sign with a space
ansond 118:c8a80adfe90d 56 for(int i=0;i<strlen(buffer);++i) if (buffer[i] == '=') buffer[i] = ' ';
ansond 118:c8a80adfe90d 57
ansond 118:c8a80adfe90d 58 // parse
ansond 118:c8a80adfe90d 59 sscanf(buffer,"%s%s",this->m_names[this->m_num_preferences],this->m_values[this->m_num_preferences]);
ansond 118:c8a80adfe90d 60
ansond 118:c8a80adfe90d 61 // DEBUG
ansond 118:c8a80adfe90d 62 this->logger()->log("Installed Preference: %s=%s",this->m_names[this->m_num_preferences],this->m_values[this->m_num_preferences]);
ansond 118:c8a80adfe90d 63
ansond 118:c8a80adfe90d 64 // increment the tally
ansond 118:c8a80adfe90d 65 ++this->m_num_preferences;
ansond 118:c8a80adfe90d 66
ansond 118:c8a80adfe90d 67 // reset the buffer and read in another line
ansond 118:c8a80adfe90d 68 memset(buffer,0,PREFERENCE_NAME_LEN + PREFERENCE_NAME_LEN + 10);
ansond 118:c8a80adfe90d 69 n = fscanf(fp,"%s",buffer);
ansond 112:1fb53d4729af 70 }
ansond 118:c8a80adfe90d 71
ansond 118:c8a80adfe90d 72 // close
ansond 118:c8a80adfe90d 73 fclose(fp);
ansond 118:c8a80adfe90d 74
ansond 118:c8a80adfe90d 75 // summary
ansond 118:c8a80adfe90d 76 this->logger()->log("Installed %d preferences",this->m_num_preferences);
ansond 112:1fb53d4729af 77 }
ansond 112:1fb53d4729af 78 else {
ansond 118:c8a80adfe90d 79 // unable to open the preferences file - not loaded
ansond 118:c8a80adfe90d 80 this->logger()->log("Unable to open preferences file %s... Preferences not loaded.",PREFERENCES_FILE);
ansond 112:1fb53d4729af 81 success = false;
ansond 112:1fb53d4729af 82 }
ansond 112:1fb53d4729af 83
ansond 112:1fb53d4729af 84 // return our status
ansond 112:1fb53d4729af 85 return success;
ansond 112:1fb53d4729af 86 }
ansond 112:1fb53d4729af 87
ansond 112:1fb53d4729af 88 // integer preference with defaults
ansond 112:1fb53d4729af 89 int Preferences::getIntPreference(char *name,int def_value) {\
ansond 112:1fb53d4729af 90 int int_value = def_value;
ansond 112:1fb53d4729af 91 char buffer[PREFERENCE_VALUE_LEN+1];
ansond 112:1fb53d4729af 92 memset(buffer,0,PREFERENCE_VALUE_LEN+1);
ansond 112:1fb53d4729af 93 char *value = this->getPreference(name,buffer,PREFERENCE_VALUE_LEN,NULL);
ansond 116:428281cb5066 94 if (value != NULL && strlen(value) > 0) sscanf(buffer,"%d",&int_value);
ansond 112:1fb53d4729af 95 return int_value;
ansond 112:1fb53d4729af 96 }
ansond 112:1fb53d4729af 97
ansond 112:1fb53d4729af 98 // boolean preference with defaults
ansond 112:1fb53d4729af 99 bool Preferences::getBooleanPreference(char *name,bool def_value) {
ansond 112:1fb53d4729af 100 bool bool_value = def_value;
ansond 112:1fb53d4729af 101 char buffer[PREFERENCE_VALUE_LEN+1];
ansond 112:1fb53d4729af 102 memset(buffer,0,PREFERENCE_VALUE_LEN+1);
ansond 112:1fb53d4729af 103 char *value = this->getPreference(name,buffer,PREFERENCE_VALUE_LEN,NULL);
ansond 112:1fb53d4729af 104 if (value != NULL && strcmp(value,"true") == 0) bool_value = true;
ansond 112:1fb53d4729af 105 if (value != NULL && strcmp(value,"false") == 0) bool_value = false;
ansond 112:1fb53d4729af 106 return bool_value;
ansond 112:1fb53d4729af 107 }
ansond 112:1fb53d4729af 108
ansond 112:1fb53d4729af 109 // string preference with defaults
ansond 112:1fb53d4729af 110 char *Preferences::getPreference(char *name,char *buffer,int buffer_length,char *def_value) {
ansond 118:c8a80adfe90d 111 char *value = NULL;
ansond 118:c8a80adfe90d 112
ansond 118:c8a80adfe90d 113 // clean the buffer
ansond 118:c8a80adfe90d 114 memset(buffer,0,buffer_length);
ansond 118:c8a80adfe90d 115
ansond 118:c8a80adfe90d 116 // get our index
ansond 118:c8a80adfe90d 117 int index = this->indexOfPreference(name);
ansond 118:c8a80adfe90d 118 if (index >= 0) {
ansond 118:c8a80adfe90d 119 // fill with our value
ansond 118:c8a80adfe90d 120 strncpy(buffer,this->m_values[index],this->min(buffer_length,strlen(this->m_values[index])));
ansond 118:c8a80adfe90d 121 value = buffer;
ansond 118:c8a80adfe90d 122 }
ansond 118:c8a80adfe90d 123 else {
ansond 118:c8a80adfe90d 124 // fill with the default
ansond 118:c8a80adfe90d 125 if (def_value != NULL) strncpy(buffer,def_value,this->min(buffer_length,strlen(def_value)));
ansond 118:c8a80adfe90d 126 if (def_value != NULL) value = buffer;
ansond 114:bd38ad417d6a 127 }
ansond 118:c8a80adfe90d 128
ansond 118:c8a80adfe90d 129 // return the value
ansond 118:c8a80adfe90d 130 return value;
ansond 118:c8a80adfe90d 131 }
ansond 118:c8a80adfe90d 132
ansond 118:c8a80adfe90d 133 // get the index of the named preference
ansond 118:c8a80adfe90d 134 int Preferences::indexOfPreference(char *name) {
ansond 118:c8a80adfe90d 135 bool found = false;
ansond 118:c8a80adfe90d 136 int index = -1;
ansond 118:c8a80adfe90d 137
ansond 118:c8a80adfe90d 138 // parameter check
ansond 118:c8a80adfe90d 139 if (name != NULL && strlen(name) > 0) {
ansond 118:c8a80adfe90d 140
ansond 118:c8a80adfe90d 141 // loop until we find the name.. then stop and record its index
ansond 118:c8a80adfe90d 142 for(int i=0;i<this->m_num_preferences && !found;++i) {
ansond 118:c8a80adfe90d 143 if (strcmp(name,this->m_names[i]) == 0) {
ansond 118:c8a80adfe90d 144 found = true;
ansond 118:c8a80adfe90d 145 index = i;
ansond 118:c8a80adfe90d 146 }
ansond 118:c8a80adfe90d 147 }
ansond 118:c8a80adfe90d 148 }
ansond 118:c8a80adfe90d 149
ansond 118:c8a80adfe90d 150 // return the index value
ansond 118:c8a80adfe90d 151 return index;
ansond 112:1fb53d4729af 152 }
ansond 112:1fb53d4729af 153
ansond 112:1fb53d4729af 154 // get our error handler
ansond 112:1fb53d4729af 155 ErrorHandler *Preferences::logger() { return this->m_error_handler; }
ansond 112:1fb53d4729af 156
ansond 112:1fb53d4729af 157 // get our preference count
ansond 118:c8a80adfe90d 158 int Preferences::numPreferences() { return this->m_num_preferences; }
ansond 112:1fb53d4729af 159
ansond 112:1fb53d4729af 160 // min function
ansond 112:1fb53d4729af 161 int Preferences::min(int value1,int value2) {
ansond 112:1fb53d4729af 162 if (value1 < value2) return value1;
ansond 112:1fb53d4729af 163 return value2;
ansond 112:1fb53d4729af 164 }