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147 lines
3.5 KiB
147 lines
3.5 KiB
#include "settings.h"
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#include <SD.h>
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#include "string_helper.h"
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Settings::Settings()
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{
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}
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Settings::~Settings()
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{
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}
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void Settings::add_line(char const* section, char const* key, char const* val)
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{
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if(string_starts_by(section, "wifi"))
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{
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char const* network_name = "0";
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if(section[4] == ':')
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network_name = section + 5;
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wifi.add_info(network_name, key, val);
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}
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else if(string_equals(section, "clock"))
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clock.add_info(key, val);
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else
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{
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delete[] key;
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delete[] val;
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}
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delete[] section;
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}
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Settings const* Settings::load(char const* settings_filename)
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{
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if(!SD.begin(D8))
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return nullptr;
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File file = SD.open("settings.ini", FILE_READ);
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if(!file)
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return nullptr;
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Settings* settings = new Settings();
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bool first_char_of_line = true;
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bool is_comment_line = false;
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bool is_section_line = false;
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unsigned int nb_whitespace = 0; //used for trimming the end of lines
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StringBuilder current_section;
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StringBuilder current_key;
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StringBuilder current_val;
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bool write_to_key = true;
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while(file.available())
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{
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char const c = file.read();
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if(!is_printable(c)) continue;
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if(first_char_of_line)
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{
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//trim whitespace at beginning of line
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if(is_whitespace(c)) continue;
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//discard whitespace-only lines
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if(c == '\n') continue;
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first_char_of_line = false;
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//is it a comment line?
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if(c == ';')
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{
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is_comment_line = true;
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continue;
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}
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//is it a section line?
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else if (c == '[')
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{
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is_section_line = true;
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current_section.clear();
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continue;
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}
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}
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if(c == '\n')
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{
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if(!is_comment_line && !is_section_line)
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settings->add_line(current_section.to_string(),
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current_key.to_string(),
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current_val.to_string());
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first_char_of_line = true;
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is_comment_line = false;
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is_section_line = false;
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current_key.clear();
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current_val.clear();
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write_to_key = true;
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}
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else if(is_comment_line)
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{
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//discarding comment lines
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continue;
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}
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else if(is_section_line)
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{
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if(c == ']')
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{
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//discard end of line
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is_section_line = false;
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is_comment_line = true;
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}
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else
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{
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current_section += c;
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}
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}
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else
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{
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if(is_whitespace(c))
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++nb_whitespace;
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else
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{
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StringBuilder& writer = write_to_key? current_key : current_val;
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for(unsigned int i = 0; i < nb_whitespace; ++i)
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writer += ' ';
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nb_whitespace = 0;
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if(write_to_key && c == '=')
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write_to_key = false;
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else
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writer += c;
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}
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}
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}
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if(!first_char_of_line && !is_comment_line && !is_section_line)
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settings->add_line(current_section.to_string(),
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current_key.to_string(),
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current_val.to_string());
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file.close();
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return settings;
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}
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