Revert "Add support for JSON settings file"

This reverts commit 9471a29ad9e5c319fac6d2f593aa29a9f4497ddc.

tasmota/tasmota_xdrv_driver/xdrv_50_filesystem.ino

@@ -538,179 +538,6 @@ bool UfsExecuteCommandFile(const char *fname) {
   return false;
 }
 
-/*********************************************************************************************\
- * File JSON settings support
- * 
- * {"UserSet1":{"Param1":123,"Param2":"Text1"},"UserSet2":{"Param1":123,"Param2":"Text2"},"UserSet3":{"Param1":123,"Param2":"Text3"}}
-\*********************************************************************************************/
-
-bool UfsJsonSettingsWrite(const char* data) {
-  // Add new UserSet replacing present UserSet
-  // Input {"UserSet2":{"Param1":123,"Param2":"Text2"}}
-
-  if (!TfsFileExists(TASM_FILE_JSON_SETTINGS)) {
-    File ofile = ffsp->open(TASM_FILE_JSON_SETTINGS, "w");
-    if (!ofile) { return false; }
-
-    ofile.write((uint8_t*)data, strlen(data));
-    ofile.close();
-    return true;
-  }
-
-  char bfname[16];
-  strcpy_P(bfname, PSTR("/gtmp.json"));
-  File ofile = ffsp->open(bfname, "w");
-  if (!ofile) { return false; }
-  File ifile = ffsp->open(TASM_FILE_JSON_SETTINGS, "r");
-  if (!ifile) { 
-    ofile.close();
-    ffsp->remove(bfname);
-    return false;
-  }
-
-  char *p = strchr(data, '"');
-  if (!p) { return false; }
-  char *q = strchr(++p, '"');
-  if (!q) { return false; }
-  uint32_t len = (uint32_t)q - (uint32_t)p;
-  char key[len +1];
-  memcpy(key, p, len);
-  key[len] = '\0';                     // key = UserSet2
-
-  char buffer[32];                     // Max key length
-  uint8_t buf[1];
-  uint32_t index = 0;
-  uint32_t bracket_count = 0;
-  int entries = 0;
-  bool quote = false;
-  bool mine = false;
-  while (ifile.available()) {          // Process file
-    ifile.read(buf, 1);
-    if (bracket_count > 1) {           // Copy or skip old data
-      if (!mine) {
-        ofile.write(buf, 1);           // Copy data
-      }
-      if (buf[0] == '}') {
-        bracket_count--;
-      }
-    } else {
-      if (buf[0] == '}') {             // Last bracket
-        break;                         // End of file
-      }
-      else if (buf[0] == '{') {
-        bracket_count++;
-        if (bracket_count > 1) {       // Skip first bracket
-          entries++;
-        }
-      }
-      else if (buf[0] == '"') {
-        quote ^= 1;
-        if (quote) {
-          index = 0;
-        } else {
-          buffer[index] = '\0';        // End of key name
-          mine = (!strcasecmp(buffer, key));
-          if (mine) {
-            entries--;                 // Skip old data
-          } else {
-            ofile.write((entries) ? (uint8_t*)",\"" : (uint8_t*)"{\"", 2);
-            ofile.write((uint8_t*)buffer, strlen(buffer));
-            ofile.write((uint8_t*)"\":{", 3);
-          }
-        }
-      }
-      else {
-        buffer[index++] = buf[0];      // Add key name
-        if (index > sizeof(buffer) -2) {
-          break;                       // Key name too long
-        }
-      }
-    }
-  }
-  ifile.close();
-  // Append new data
-  ofile.write((entries) ? (uint8_t*)"," : (uint8_t*)"{", 1);
-  ofile.write((uint8_t*)data +1, strlen(data) -1);
-  ofile.close();
-  if (index > sizeof(buffer) -2) { return false; }
-  ffsp->remove(TASM_FILE_JSON_SETTINGS);
-  ffsp->rename(bfname, TASM_FILE_JSON_SETTINGS);
-  return true;
-}
-
-String UfsJsonSettingsRead(const char* key) {
-  // Input "UserSet2"
-  // Returns {"Param1":123,"Param2":"Text2"}
-
-  String data = "";
-  if (!TfsFileExists(TASM_FILE_JSON_SETTINGS)) { return data; }
-  File file = ffsp->open(TASM_FILE_JSON_SETTINGS, "r");
-  if (!file) { return data; }
-
-  Trim((char*)key);
-  char buffer[128];
-  uint8_t buf[1] = { 0 };
-  uint32_t index = 0;
-  uint32_t bracket_count = 0;
-  bool quote = false;
-  bool mine = false;
-  while (file.available()) {           // Process file
-    file.read(buf, 1);
-    if (bracket_count > 1) {           // Build JSON
-      if (mine) {
-        buffer[index++] = buf[0];      // Add key data
-        if (index > sizeof(buffer) -2) {
-          buffer[index] = '\0'; 
-          data += buffer;              // Add buffer to result
-          index = 0;
-        }
-      }
-      if (buf[0] == '}') {
-        bracket_count--;
-        if (1 == bracket_count) {
-          if (mine) {
-            break;                     // End of key data
-          } else {
-            index = 0;                 // End of data which is not mine
-          }
-        }
-      }
-    } else {
-      if (buf[0] == '}') {             // Last bracket
-        index = 0;
-        break;                         // End of file - key not found
-      }
-      else if (buf[0] == '{') {
-        bracket_count++;
-        if (bracket_count > 1) {       // Skip first bracket
-          index = 0;
-          buffer[index++] = buf[0];    // Start of key data
-        }
-      }
-      else if (buf[0] == '"') {
-        quote ^= 1;
-        if (quote) {
-          index = 0;
-        } else {
-          buffer[index] = '\0';        // End of key name
-          mine = (!strcasecmp(buffer, key));
-        }
-      }
-      else {
-        buffer[index++] = buf[0];      // Add key name
-        if (index > sizeof(buffer) -2) {
-          index = 0;
-          break;                       // Key name too long
-        }
-      }
-    }
-  }
-  file.close();
-  buffer[index] = '\0';
-  data += buffer;
-  return data;
-}
-
 /*********************************************************************************************\
  * Commands
 \*********************************************************************************************/