Diff: libs/Config.cpp

Revision:

0:31e91bb0ef3c

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libs/Config.cpp	Tue Jul 31 21:11:18 2012 +0000
@@ -0,0 +1,150 @@
+/*  
+      This file is part of Smoothie (http://smoothieware.org/). The motion control part is heavily based on Grbl (https://github.com/simen/grbl).
+      Smoothie is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+      Smoothie is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+      You should have received a copy of the GNU General Public License along with Smoothie. If not, see <http://www.gnu.org/licenses/>. 
+*/
+
+
+using namespace std;
+#include <vector>
+#include <string>
+
+#include "libs/Kernel.h"
+#include "Config.h"
+#include "ConfigValue.h"
+#include "ConfigSource.h"
+#include "ConfigCache.h"
+#include "libs/nuts_bolts.h"
+#include "libs/utils.h"
+#include "libs/SerialMessage.h"
+#include "libs/ConfigSources/FileConfigSource.h"
+
+
+Config::Config(){
+
+    this->config_cache_loaded = false;
+
+    // Config source for */config files
+    this->config_sources.push_back( new FileConfigSource("/local/config", LOCAL_CONFIGSOURCE_CHECKSUM) );
+    //this->config_sources.push_back( new FileConfigSource("/sd/config",    SD_CONFIGSOURCE_CHECKSUM   ) );
+
+    // Pre-load the config cache
+    this->config_cache_load();
+
+}
+
+void Config::on_module_loaded(){}
+
+void Config::on_console_line_received( void* argument ){}
+
+void Config::set_string( string setting, string value ){
+    ConfigValue* cv = new ConfigValue;
+    cv->found = true;
+    cv->check_sums = get_checksums(setting);
+    cv->value = value;
+
+    this->config_cache.replace_or_push_back(cv);
+
+    this->kernel->call_event(ON_CONFIG_RELOAD);
+}
+
+void Config::get_module_list(vector<uint16_t>* list, uint16_t family){ 
+    for( int i=1; i<this->config_cache.size(); i++){
+        ConfigValue* value = this->config_cache.at(i); 
+        if( value->check_sums.size() == 3 && value->check_sums.at(2) == 29545 && value->check_sums.at(0) == family ){
+            // We found a module enable for this family, add it's number 
+            list->push_back(value->check_sums.at(1));
+        } 
+    }
+}
+
+
+// Command to load config cache into buffer for multiple reads during init
+void Config::config_cache_load(){
+
+    this->config_cache_clear();
+
+    // First element is a special empty ConfigValue for values not found
+    ConfigValue* result = new ConfigValue;
+    this->config_cache.push_back(result);
+    // For each ConfigSource in our stack
+    for( unsigned int i = 0; i < this->config_sources.size(); i++ ){
+        ConfigSource* source = this->config_sources[i];
+        source->transfer_values_to_cache(&this->config_cache);
+    }
+
+    this->config_cache_loaded = true;
+}
+
+// Command to clear the config cache after init
+void Config::config_cache_clear(){
+    while( ! this->config_cache.empty() ){
+        delete this->config_cache.back();
+        this->config_cache.pop_back();
+    }
+    this->config_cache_loaded = false;
+}
+
+
+ConfigValue* Config::value(uint16_t check_sum_a, uint16_t check_sum_b, uint16_t check_sum_c ){
+    vector<uint16_t> check_sums;
+    check_sums.push_back(check_sum_a); 
+    check_sums.push_back(check_sum_b); 
+    check_sums.push_back(check_sum_c); 
+    return this->value(check_sums);
+}    
+
+ConfigValue* Config::value(uint16_t check_sum_a, uint16_t check_sum_b){
+    vector<uint16_t> check_sums;
+    check_sums.push_back(check_sum_a); 
+    check_sums.push_back(check_sum_b); 
+    return this->value(check_sums);
+}    
+
+ConfigValue* Config::value(uint16_t check_sum){
+    vector<uint16_t> check_sums;
+    check_sums.push_back(check_sum); 
+    return this->value(check_sums);
+}    
+    
+// Get a value from the configuration as a string
+// Because we don't like to waste space in Flash with lengthy config parameter names, we take a checksum instead so that the name does not have to be stored
+// See get_checksum
+ConfigValue* Config::value(vector<uint16_t> check_sums){
+    ConfigValue* result = this->config_cache[0];
+    //if( this->has_config_file() == false ){
+    //   return result;
+    //} 
+    // Check if the config is cached, and load it temporarily if it isn't
+    bool cache_preloaded = this->config_cache_loaded;
+    if( !cache_preloaded ){ this->config_cache_load(); }
+     
+    for( int i=1; i<this->config_cache.size(); i++){
+        // If this line matches the checksum 
+        bool match = true;
+        for( unsigned int j = 0; j < check_sums.size(); j++ ){
+            uint16_t checksum_node = check_sums[j];
+           
+            //printf("%u(%s) against %u\r\n", get_checksum(key_node), key_node.c_str(), checksum_node);
+            if(this->config_cache[i]->check_sums[j] != checksum_node ){
+                match = false;
+                break; 
+            }
+        } 
+        if( match == false ){ 
+            //printf("continue\r\n");
+            continue; 
+        }
+        result = this->config_cache[i];
+        break;
+    }
+    
+    if( !cache_preloaded ){
+        this->config_cache_clear();
+    }
+    return result;
+}
+
+
+