portapack-mayhem/firmware/application/freqman.cpp

111 lines
2.9 KiB
C++

/*
* Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
* Copyright (C) 2016 Furrtek
*
* This file is part of PortaPack.
*
* This program 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 2, or (at your option)
* any later version.
*
* This program 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 this program; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#include "freqman.hpp"
bool load_freqman_file(std::vector<freqman_entry> &frequencies) {
File freqs_file;
size_t end, n = 0;
char * file_buffer;
char * desc_pos;
char desc_buffer[32] = { 0 };
std::string description;
rf::Frequency value;
file_buffer = (char *)chHeapAlloc(0, 2048);
while (freqs_file.open("freqman.txt").is_valid()) {
auto result = freqs_file.create("freqman.txt");
if (result.is_valid()) {
return false;
}
}
freqs_file.read(file_buffer, 2048);
char * pos = file_buffer;
while ((pos = strstr(pos, "f=")) && n < 32) {
pos += 2;
value = strtol(pos, nullptr, 10);
desc_pos = strstr(pos, "d=");
if (desc_pos) {
desc_pos += 2;
end = strcspn(desc_pos, ",\x0D\x0A"); // CR LF
if (end > 31) end = 31;
memcpy(desc_buffer, desc_pos, end);
desc_buffer[end] = (char)0;
description = desc_buffer;
pos = desc_pos;
} else {
description = "-";
}
frequencies.push_back({ value, "", description });
}
chHeapFree(file_buffer);
return true;
}
bool save_freqman_file(std::vector<freqman_entry> &frequencies) {
File freqs_file;
size_t n;
std::string item_string;
auto result = freqs_file.create("freqman.txt");
if (result.is_valid()) return false;
for (n = 0; n < frequencies.size(); n++) {
item_string = "f=" + to_string_dec_uint(frequencies[n].value);
if (frequencies[n].description.size())
item_string += ",d=" + frequencies[n].description;
freqs_file.write_line(item_string);
}
return true;
}
std::string freqman_item_string(freqman_entry &entry) {
std::string item_string, frequency_str, description;
char temp_buffer[32];
rf::Frequency value;
value = entry.value;
entry.frequency_str = to_string_dec_int(value / 1000000, 4) + "." +
to_string_dec_int((value / 100) % 10000, 4, '0');
if (entry.description.size() <= 19) {
item_string = entry.frequency_str + ":" + entry.description;
} else {
memcpy(temp_buffer, entry.description.c_str(), 16);
temp_buffer[16] = (char)0;
item_string = entry.frequency_str + ":" + temp_buffer + "...";
}
return item_string;
}