appconf.cpp

00001 /**
00002  * =============================================================================
00003  * Application configuration for 'Expansion Board One' example no.2
00004  * http://mbed.org/users/shintamainjp/notebook/starboard_expbrd-one_ex2_en/
00005  * =============================================================================
00006  * Copyright (c) 2010 Shinichiro Nakamura (CuBeatSystems)
00007  *
00008  * Permission is hereby granted, free of charge, to any person obtaining a copy
00009  * of this software and associated documentation files (the "Software"), to deal
00010  * in the Software without restriction, including without limitation the rights
00011  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
00012  * copies of the Software, and to permit persons to whom the Software is
00013  * furnished to do so, subject to the following conditions:
00014  *
00015  * The above copyright notice and this permission notice shall be included in
00016  * all copies or substantial portions of the Software.
00017  *
00018  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00019  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00020  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
00021  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00022  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00023  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
00024  * THE SOFTWARE.
00025  * =============================================================================
00026  */
00027 
00028 #include "appconf.h"
00029 #include "ConfigFile.h"
00030 
00031 #define KEY_PACHUBE_APIKEY   "PACHUBE_APIKEY"
00032 #define KEY_PACHUBE_FEEDID   "PACHUBE_FEEDID"
00033 #define KEY_PACHUBE_INTERVAL "PACHUBE_INTERVAL"
00034 
00035 /**
00036  * Initialize configuration.
00037  *
00038  * @param p A pointer to a application config.
00039  */
00040 void appconf_init(appconf_t *p) {
00041     memset(p->apikey, 0, sizeof(p->apikey));
00042     memset(p->feedid, 0, sizeof(p->feedid));
00043     p->interval = 0;
00044 }
00045 
00046 /**
00047  * Read configuration.
00048  *
00049  * @param filename Filename.
00050  * @param p A pointer to a application config.
00051  * @return Return zero if it succeed.
00052  */
00053 int appconf_read(char *filename, appconf_t *p) {
00054     ConfigFile cf;
00055     if (!cf.read(filename)) {
00056         return -1;
00057     }
00058     if (!cf.getValue(KEY_PACHUBE_APIKEY, p->apikey, sizeof(p->apikey))) {
00059         return -2;
00060     }    
00061     if (!cf.getValue(KEY_PACHUBE_FEEDID, p->feedid, sizeof(p->feedid))) {
00062         return -3;
00063     }
00064     char buf[64];
00065     if (!cf.getValue(KEY_PACHUBE_INTERVAL, buf, sizeof(buf))) {
00066         return -4;
00067     } else {
00068         if (sscanf(buf, "%d", &(p->interval)) != 1) {
00069             return -5;
00070         }
00071     }
00072     return 0;
00073 }
00074 
00075 /**
00076  * Write configuration.
00077  *
00078  * @param filename Filename.
00079  * @param p A pointer to a application config.
00080  * @return Return zero if it succeed.
00081  */
00082 int appconf_write(char *filename, appconf_t *p) {
00083     ConfigFile cf;
00084     if (!cf.setValue(KEY_PACHUBE_APIKEY, p->apikey)) {
00085         return -1;
00086     }
00087     if (!cf.setValue(KEY_PACHUBE_FEEDID, p->feedid)) {
00088         return -2;
00089     }
00090     char buf[64];
00091     snprintf(buf, sizeof(buf) - 1, "%d", p->interval);
00092     if (!cf.setValue(KEY_PACHUBE_INTERVAL, buf)) {
00093         return -3;
00094     }
00095     if (!cf.write(filename)) {
00096         return -4;
00097     }
00098     return 0;
00099 }