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Add TfsLoadString()

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This commit is contained in:
Theo Arends 2023-01-04 12:00:09 +01:00
parent d59caa7203
commit cd182a5814
2 changed files with 24 additions and 19 deletions
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23
tasmota/tasmota_xdrv_driver/xdrv_50_filesystem.ino
View File

@ -306,6 +306,16 @@ bool TfsFileExists(const char *fname){
return yes; return yes;
} }
size_t TfsFileSize(const char *fname){
if (!ffs_type) { return 0; }
File file = ffsp->open(fname, "r");
if (!file) { return 0; }
size_t flen = file.size();
file.close();
return flen;
}
bool TfsSaveFile(const char *fname, const uint8_t *buf, uint32_t len) { bool TfsSaveFile(const char *fname, const uint8_t *buf, uint32_t len) {
if (!ffs_type) { return false; } if (!ffs_type) { return false; }
#ifdef USE_WEBCAM #ifdef USE_WEBCAM
@ -362,7 +372,6 @@ bool TfsInitFile(const char *fname, uint32_t len, uint8_t init_value) {
bool TfsLoadFile(const char *fname, uint8_t *buf, uint32_t len) { bool TfsLoadFile(const char *fname, uint8_t *buf, uint32_t len) {
if (!ffs_type) { return false; } if (!ffs_type) { return false; }
if (!TfsFileExists(fname)) { return false; }
File file = ffsp->open(fname, "r"); File file = ffsp->open(fname, "r");
if (!file) { if (!file) {
@ -371,15 +380,19 @@ bool TfsLoadFile(const char *fname, uint8_t *buf, uint32_t len) {
} }
size_t flen = file.size(); size_t flen = file.size();
if (len > flen){ if (len > flen) { len = flen; } // Adjust requested length to smaller file length
len = flen;
}
file.read(buf, len); file.read(buf, len);
file.close(); file.close();
return true; return true;
} }
String TfsLoadString(const char *fname) {
// Use a reasonable amount of stack space considering 4k/8k available on ESP8266/ESP32 and manageable string length
char buf[2048] = { 0 }; // Prepare empty string of max 2047 characters on stack
TfsLoadFile(fname, (uint8_t*)buf, 2047); // Leave last position as end of string ('\0')
return String(buf); // Received string or empty on error
}
bool TfsDeleteFile(const char *fname) { bool TfsDeleteFile(const char *fname) {
if (!ffs_type) { return false; } if (!ffs_type) { return false; }

18
tasmota/tasmota_xnrg_energy/xnrg_29_modbus.ino
View File

@ -75,7 +75,6 @@
//#define ENERGY_MODBUS_DEBUG_SHOW //#define ENERGY_MODBUS_DEBUG_SHOW
#define ENERGY_MODBUS_FILE "/modbus.json" // Modbus parameter file name used by filesystem #define ENERGY_MODBUS_FILE "/modbus.json" // Modbus parameter file name used by filesystem
#define ENERGY_MODBUS_MAX_FSIZE 1024 // Modbus parameter file max size
const uint16_t nrg_mbs_reg_not_used = 0xFFFF; // Odd number 65535 is unused register const uint16_t nrg_mbs_reg_not_used = 0xFFFF; // Odd number 65535 is unused register
@ -482,15 +481,9 @@ bool EnergyModbusReadRegisters(void) {
String modbus = ""; String modbus = "";
#ifdef USE_UFILESYS #ifdef USE_UFILESYS
char *modbus_file = (char*)calloc(ENERGY_MODBUS_MAX_FSIZE, 1); modbus = TfsLoadString(ENERGY_MODBUS_FILE);
if (modbus_file) { if (modbus.length()) {
if (TfsLoadFile(ENERGY_MODBUS_FILE, (uint8_t*)modbus_file, ENERGY_MODBUS_MAX_FSIZE -1)) { AddLog(LOG_LEVEL_DEBUG, PSTR("NRG: Loaded from File"));
if (strlen(modbus_file) < ENERGY_MODBUS_MAX_FSIZE) {
modbus = modbus_file;
AddLog(LOG_LEVEL_DEBUG, PSTR("NRG: Loaded from File"));
}
}
free(modbus_file);
} }
#endif // USE_UFILESYS #endif // USE_UFILESYS
@ -508,13 +501,12 @@ bool EnergyModbusReadRegisters(void) {
} }
#endif // USE_SCRIPT #endif // USE_SCRIPT
if (!modbus.length()) { return false; } // File not found if (modbus.length() < 7) { return false; } // File not found or Invalid JSON
// AddLog(LOG_LEVEL_DEBUG, PSTR("NRG: File '%s'"), modbus.c_str()); // AddLog(LOG_LEVEL_DEBUG, PSTR("NRG: File '%s'"), modbus.c_str());
const char* json = modbus.c_str(); const char* json = modbus.c_str();
uint32_t len = strlen(json) +1; uint32_t len = strlen(json) +1;
if (len < 7) { return false; } // Invalid JSON
char json_buffer[len]; char json_buffer[len];
memcpy(json_buffer, json, len); // Keep original safe memcpy(json_buffer, json, len); // Keep original safe
JsonParser parser(json_buffer); JsonParser parser(json_buffer);