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param_file.h
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param_file.h
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// Copyright 2023-2024 REMAKE.AI, KAIA.AI, MAKERSPET.COM
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#pragma once
#include <SPIFFS.h>
class PARAM_FILE {
protected:
char * const* param_name;
String * param_value;
uint16_t len;
static constexpr char * FILE_PATH = (char *)"/config.txt";
static constexpr char * FILE_PATH_OLD = (char *)"/config.old";
public:
PARAM_FILE(char* const* param_names, String * param_values, uint16_t len) {
param_name = param_names;
param_value = param_values;
this->len = len;
}
bool load(bool old_config = false) {
const char * CONFIG_PATH = old_config ? FILE_PATH_OLD : FILE_PATH;
Serial.print("Reading file ");
Serial.print(CONFIG_PATH);
File file = SPIFFS.open(CONFIG_PATH);
if (!file || file.isDirectory()) {
Serial.println(" - file not found");
return false;
} else
Serial.println();
String name_str;
uint8_t i = 0;
while (file.available()) {
switch (i & 0x1) {
case 0:
name_str = file.readStringUntil('\n');
break;
case 1:
String value_str = file.readStringUntil('\n');
setByName(name_str.c_str(), value_str.c_str());
break;
}
i++;
}
return true;
}
bool save(bool old_config=false) {
const char * CONFIG_PATH = old_config ? FILE_PATH_OLD : FILE_PATH;
Serial.print("Writing file ");
Serial.print(CONFIG_PATH);
File file = SPIFFS.open(CONFIG_PATH, FILE_WRITE);
if (!file) {
Serial.print(" - file open failed");
return false;
}
Serial.println();
bool success = true;
for (uint16_t i = 0; i < len; i++) {
//Serial.print(param_name[i]);
//Serial.print("=");
//Serial.println(param_value[i]);
success = success && file.print(param_name[i]);
success = success && file.print('\n');
success = success && file.print(param_value[i]);
success = success && file.print('\n');
if (!success) {
Serial.println("Write failed ");
break;
}
}
file.close();
return success;
}
bool init() {
if (!SPIFFS.begin(true)) {
Serial.println("Error mounting SPIFFS");
return false;
}
Serial.println("SPIFFS mounted successfully");
//if (!SPIFFS.exists("/www/index.html")) {
if (!SPIFFS.exists("/index.html")) {
Serial.println("Sketch data not found. Have you uploaded the sketch data?");
return false;
}
return true;
}
bool setByName(const char * pname, const char * pvalue) {
if (pname == NULL || pvalue == NULL) {
Serial.print("NULL pointer in setByName()");
return false;
}
int16_t idx = nameToIndex(pname);
if (idx < 0) {
//Serial.print("Parameter ");
//Serial.print(pname);
//Serial.println(" not found in setByName()");
return false;
}
return set(idx, pvalue);
}
bool set(const uint16_t param_idx, const char * pvalue) {
if (param_idx >= len || pvalue == NULL) {
Serial.print("NULL pointer or invalid index in set()");
return false;
}
//Serial.print(param_idx);
//Serial.print(" ");
//Serial.print(param_name[param_idx]);
//Serial.print("=");
//Serial.println(pvalue);
param_value[param_idx] = String(pvalue);
return true;
}
const char * get(const uint16_t idx) {
if (idx >= len)
return "";
return param_value[idx].c_str();
}
float getAsFloat(const uint16_t idx) {
return String(get(idx)).toFloat();
}
float getAsInt(const uint16_t idx) {
return String(get(idx)).toInt();
}
const char * getName(const uint16_t idx) {
if (idx >= len)
return "";
return param_name[idx];
}
const char * getByName(const char * pname) {
int16_t idx = nameToIndex(pname);
if (idx < 0 || idx >= len)
return "";
return param_value[idx].c_str();
}
int16_t nameToIndex(const char * pname) {
if (pname == NULL)
return -1;
// Hack
for (int16_t i = 0; i < len; i++) {
if (strcmp(pname, param_name[i]) == 0)
return i;
}
return -1;
}
bool purge() {
SPIFFS.remove(FILE_PATH_OLD);
return SPIFFS.rename(FILE_PATH, FILE_PATH_OLD);
}
};