portapack-mayhem/firmware/application/freqman.cpp
furrtek c922a56b6d High frequency load/save bugfix
Editing widgets hidden if freqman category is empty
Textentry now trims strings up to cursor
2017-06-23 00:13:13 +01:00

143 lines
3.7 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"
#include <algorithm>
#define FREQMAN_DESC_MAX_LEN 30
#define FREQMAN_MAX_PER_FILE 256
std::vector<std::string> get_freqman_files() {
std::vector<std::string> file_list;
auto files = scan_root_files(u"FREQMAN", u"*.TXT");
for (auto file : files) {
file_list.emplace_back(file.stem().string());
}
return file_list;
};
bool load_freqman_file(std::string& file_stem, freqman_db &db) {
File freqman_file;
size_t length, span_end, n = 0;
uint64_t seek_pos = 0;
char * pos;
char * line_end;
std::string description;
rf::Frequency value;
char file_data[256];
db.entries.clear();
auto result = freqman_file.open("FREQMAN/" + file_stem + ".TXT");
if (result.is_valid())
return false;
freqman_file.read(file_data, 256);
while ((pos = strstr(file_data, "f=")) && (n < FREQMAN_MAX_PER_FILE)) {
// Trim buffer at end of last complete line
line_end = file_data;
span_end = strcspn(line_end, "\x0A");
if (span_end) {
if (span_end == strlen(line_end))
return true;
}
line_end += (span_end + 1);
*line_end = (char)0;
// Read frequency
pos += 2;
value = strtoll(pos, nullptr, 10);
// Read description until , or LF
pos = strstr(file_data, "d=");
if (pos) {
pos += 2;
length = std::min(strcspn(pos, ",\x0A"), (size_t)FREQMAN_DESC_MAX_LEN);
description = string(pos, length);
} else {
description = "-";
}
db.entries.push_back({ value, "", description });
n++;
seek_pos += (line_end - file_data);
if (freqman_file.seek(seek_pos).value() == seek_pos)
break;
else
freqman_file.read(file_data, 256);
}
return true;
}
bool save_freqman_file(std::string& file_stem, freqman_db &db) {
File freqman_file;
std::string item_string;
rf::Frequency f;
if (!create_freqman_file(file_stem, freqman_file))
return false;
for (size_t n = 0; n < db.entries.size(); n++) {
f = db.entries[n].value;
item_string = "f=" + to_string_dec_uint(f / 1000) + to_string_dec_uint(f % 1000UL, 3, '0'); // Please forgive me
if (db.entries[n].description.size())
item_string += ",d=" + db.entries[n].description;
freqman_file.write_line(item_string);
}
return true;
}
bool create_freqman_file(std::string& file_stem, File& freqman_file) {
auto result = freqman_file.create("FREQMAN/" + file_stem + ".TXT");
if (result.is_valid())
return false;
return true;
}
std::string freqman_item_string(freqman_entry &entry, size_t max_length) {
std::string item_string, frequency_str, description;
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');
item_string = entry.frequency_str + "M: " + entry.description;
if (entry.description.size() > max_length)
return item_string.substr(0, max_length - 3) + "...";
return item_string;
}