src/libs/ConfigSources/FirmConfigSource.cpp

   1 /*
   2       This file is part of Smoothie (http://smoothieware.org/). The motion control part is heavily based on Grbl (https://github.com/simen/grbl).
   3       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.
   4       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.
   5       You should have received a copy of the GNU General Public License along with Smoothie. If not, see <http://www.gnu.org/licenses/>.
   6 */
   7
   8 #include "libs/Kernel.h"
   9 #include "ConfigValue.h"
  10 #include "FirmConfigSource.h"
  11 #include "ConfigCache.h"
  12 #include <malloc.h>
  13 #include "utils.h"
  14
  15 using namespace std;
  16 #include <string>
  17
  18 // we use objdump in the Makefile to import your config.default file into the compiled code
  19 // Since the two symbols below are derived from the filename, we need to change them if the filename changes
  20 extern char _binary_config_default_start;
  21 extern char _binary_config_default_end;
  22
  23
  24 FirmConfigSource::FirmConfigSource(const char* name){
  25     this->name_checksum = get_checksum(name);
  26 }
  27
  28 // Transfer all values found in the file to the passed cache
  29 void FirmConfigSource::transfer_values_to_cache( ConfigCache* cache ){
  30
  31     char* p = &_binary_config_default_start;
  32     // For each line
  33     while( p < &_binary_config_default_end ){
  34         // find eol
  35         char *eol= p;
  36         while(eol < &_binary_config_default_end) {
  37             if(*eol++ == '\n') break;
  38         }
  39         string line(p, eol-p);
  40         //printf("firm: processing %s\n", line.c_str());
  41         p= eol;
  42         process_line_from_ascii_config(line, cache);
  43     }
  44 }
  45
  46 // Return true if the check_sums match
  47 bool FirmConfigSource::is_named( uint16_t check_sum ){
  48     return check_sum == this->name_checksum;
  49 }
  50
  51 // Write a config setting to the file *** FirmConfigSource is read only ***
  52 bool FirmConfigSource::write( string setting, string value ){
  53     //THEKERNEL->streams->printf("ERROR: FirmConfigSource is read only\r\n");
  54     return false;
  55 }
  56
  57 // Return the value for a specific checksum
  58 string FirmConfigSource::read( uint16_t check_sums[3] ){
  59
  60     string value = "";
  61
  62     char* p = &_binary_config_default_start;
  63     // For each line
  64     while( p < &_binary_config_default_end ){
  65         // find eol
  66         char *eol= p;
  67         while(eol < &_binary_config_default_end) {
  68             if(*eol++ == '\n') break;
  69         }
  70         string line(p, eol-p);
  71         p= eol;
  72         value = process_line_from_ascii_config(line, check_sums);
  73         if(!value.empty()) return value;
  74     }
  75
  76     return value;
  77 }
  78