Changed freqman file loading to be a bit less stupid

Capped freqman file entries to 50 due to RAM overflow (?)

firmware/application/freqman.cpp

@@ -23,9 +23,6 @@
 #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;
 	
@@ -40,9 +37,9 @@ std::vector<std::string> get_freqman_files() {
 
 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;
+	size_t length, n = 0, file_position = 0;
 	char * pos;
+	char * line_start;
 	char * line_end;
 	std::string description;
 	rf::Frequency value;
@@ -54,43 +51,52 @@ bool load_freqman_file(std::string& file_stem, freqman_db &db) {
 	if (result.is_valid())
 		return false;
 	
-	freqman_file.read(file_data, 256);
+	while (1) {
+		freqman_file.seek(file_position);
 		
-	while ((pos = strstr(file_data, "f=")) && (n < FREQMAN_MAX_PER_FILE)) {
+		memset(file_data, 0, 256);
+		auto read_size = freqman_file.read(file_data, 256);
+		if (read_size.is_error())
+			return false;	// Read error
 		
-		// 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;
+		file_position += sizeof(file_data);
 		
+		line_start = file_data;
+		
+		pos = strstr(file_data, "f=");
+		if (!pos) break;
+		
+		// Look for complete lines in buffer
+		while ((line_end = strstr(line_start, "\x0A"))) {
 			// Read frequency
+			pos = strstr(line_start, "f=");
+			if (pos) {
 				pos += 2;
 				value = strtoll(pos, nullptr, 10);
+			} else
+				value = 0;
 			
 			// Read description until , or LF
-		pos = strstr(file_data, "d=");
+			pos = strstr(line_start, "d=");
 			if (pos) {
 				pos += 2;
 				length = std::min(strcspn(pos, ",\x0A"), (size_t)FREQMAN_DESC_MAX_LEN);
 				description = string(pos, length);
-		} else {
+			} else
 				description = "-";
-		}
 			
 			db.entries.push_back({ value, "", description });
 			n++;
 			
-		seek_pos += (line_end - file_data);
+			if (n >= FREQMAN_MAX_PER_FILE) return true;
 			
-		if (freqman_file.seek(seek_pos).value() == seek_pos)
-			break;
-		else
-			freqman_file.read(file_data, 256);
+			line_start = line_end + 1;
+		}
+		
+		if (read_size.value() != sizeof(file_data))
+			return true;	// End of file
+		
+		file_position -= (file_data + sizeof(file_data) - line_start);
 	}
 	
 	return true;

firmware/application/freqman.hpp

@@ -29,6 +29,10 @@
 #ifndef __FREQMAN_H__
 #define __FREQMAN_H__
 
+#define FREQMAN_DESC_MAX_LEN 30
+#define FREQMAN_MAX_PER_FILE 50
+#define FREQMAN_MAX_PER_FILE_STR "50"
+
 using namespace ui;
 using namespace std;
 
@@ -40,9 +44,9 @@ enum freqman_error {
 };
 
 struct freqman_entry {
-	rf::Frequency value;
-	std::string frequency_str;
-	std::string description;
+	rf::Frequency value { 0 };
+	std::string frequency_str { };
+	std::string description { };
 };
 
 struct freqman_db {

firmware/application/ui_freqman.cpp

@@ -35,9 +35,6 @@ FreqManBaseView::FreqManBaseView(
 {
 	file_list = get_freqman_files();
 	
-	if (!file_list.size())
-		error_ = ERROR_NOFILES;
-	
 	add_children({
 		&label_category,
 		&button_exit
@@ -46,7 +43,8 @@ FreqManBaseView::FreqManBaseView(
 	if (file_list.size()) {
 		add_child(&options_category);
 		populate_categories();
-	}
+	} else
+		error_ = ERROR_NOFILES;
 	
 	// Default function
 	on_change_category = [this](int32_t category_id) {
@@ -64,18 +62,23 @@ void FreqManBaseView::focus() {
 	if (error_ == ERROR_ACCESS) {
 		nav_.display_modal("Error", "File acces error", ABORT, nullptr);
 	} else if (error_ == ERROR_NOFILES) {
-		nav_.display_modal("Error", "No database files", ABORT, nullptr);
+		nav_.display_modal("Error", "No database files\nin /freqman", ABORT, nullptr);
 	} else {
 		options_category.focus();
 	}
 }
 
-bool FreqManBaseView::populate_categories() {
+void FreqManBaseView::populate_categories() {
 	categories.clear();
 	
 	for (size_t n = 0; n < file_list.size(); n++)
 		categories.emplace_back(std::make_pair(file_list[n], n));
 	
+	// Alphabetical sort
+	std::sort(categories.begin(), categories.end(), [](auto &left, auto &right) {
+		return left.first < right.first;
+	});
+	
 	options_category.set_options(categories);
 	options_category.set_selected_index(0);
 	
@@ -83,8 +86,6 @@ bool FreqManBaseView::populate_categories() {
 		if (on_change_category)
 			on_change_category(category_id);
 	};
-	
-	return true;
 }
 
 void FreqManBaseView::change_category(int32_t category_id) {
@@ -125,18 +126,35 @@ void FreqManBaseView::refresh_list() {
 	}
 }
 
+void FrequencySaveView::save_current_file() {
+	if (database.entries.size() > FREQMAN_MAX_PER_FILE) {
+		nav_.display_modal(
+			"Error", "Too many entries, maximum is\n" FREQMAN_MAX_PER_FILE_STR ". Trim list ?",
+			YESNO,
+			[this](bool choice) {
+				if (choice) {
+					database.entries.resize(FREQMAN_MAX_PER_FILE);
+					save_freqman_file(file_list[current_category_id], database);
+				}
+				nav_.pop();
+			}
+		);
+	} else {
+		save_freqman_file(file_list[current_category_id], database);
+		nav_.pop();
+	}
+}
+
 void FrequencySaveView::on_save_name() {
 	text_prompt(nav_, &desc_buffer, 28, [this](std::string * buffer) {
 		database.entries.push_back({ value_, "", *buffer });
-		save_freqman_file(file_list[current_category_id], database);
-		nav_.pop();
+		save_current_file();
 	});
 }
 
 void FrequencySaveView::on_save_timestamp() {
 	database.entries.push_back({ value_, "", live_timestamp.string() });
-	save_freqman_file(file_list[current_category_id], database);
-	nav_.pop();
+	save_current_file();
 }
 
 FrequencySaveView::FrequencySaveView(

firmware/application/ui_freqman.hpp

@@ -54,7 +54,7 @@ protected:
 	std::vector<std::string> file_list { };
 	int32_t current_category_id { 0 };
 	
-	bool populate_categories();
+	void populate_categories();
 	void change_category(int32_t category_id);
 	void refresh_list();
 	
@@ -95,6 +95,7 @@ private:
 	
 	void on_save_name();
 	void on_save_timestamp();
+	void save_current_file();
 	
 	BigFrequency big_display {
 		{ 4, 2 * 16, 28 * 8, 32 },