New JSON parsing

easy_flipper/easy_flipper.h

@@ -24,6 +24,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <jsmn/jsmn.h>
+#include <jsmn/jsmn_furi.h>
 
 #define EASY_TAG "EasyFlipper"
 

jsmn/jsmn.c

@@ -7,8 +7,6 @@
  */
 
 #include <jsmn/jsmn.h>
-#include <stdlib.h>
-#include <string.h>
 
 /**
  * Allocates a fresh unused token from the token pool.
@@ -769,3 +767,18 @@ char **get_json_array_values(char *key, char *json_data, uint32_t max_tokens, in
     free(array_str);
     return values;
 }
+
+int json_token_count(const char *json)
+{
+    if (json == NULL)
+    {
+        return JSMN_ERROR_INVAL;
+    }
+
+    jsmn_parser parser;
+    jsmn_init(&parser);
+
+    // Pass NULL for tokens and 0 for num_tokens to get the token count only
+    int ret = jsmn_parse(&parser, json, strlen(json), NULL, 0);
+    return ret; // If ret >= 0, it represents the number of tokens needed.
+}

jsmn/jsmn.h

@@ -17,6 +17,7 @@
 #define JSMN_H
 
 #include <stddef.h>
+#include <jsmn/jsmn_h.h>
 
 #ifdef __cplusplus
 extern "C"
@@ -28,61 +29,6 @@ extern "C"
 #else
 #define JSMN_API extern
 #endif
-
-    /**
-     * JSON type identifier. Basic types are:
-     * 	o Object
-     * 	o Array
-     * 	o String
-     * 	o Other primitive: number, boolean (true/false) or null
-     */
-    typedef enum
-    {
-        JSMN_UNDEFINED = 0,
-        JSMN_OBJECT = 1 << 0,
-        JSMN_ARRAY = 1 << 1,
-        JSMN_STRING = 1 << 2,
-        JSMN_PRIMITIVE = 1 << 3
-    } jsmntype_t;
-
-    enum jsmnerr
-    {
-        /* Not enough tokens were provided */
-        JSMN_ERROR_NOMEM = -1,
-        /* Invalid character inside JSON string */
-        JSMN_ERROR_INVAL = -2,
-        /* The string is not a full JSON packet, more bytes expected */
-        JSMN_ERROR_PART = -3
-    };
-
-    /**
-     * JSON token description.
-     * type		type (object, array, string etc.)
-     * start	start position in JSON data string
-     * end		end position in JSON data string
-     */
-    typedef struct
-    {
-        jsmntype_t type;
-        int start;
-        int end;
-        int size;
-#ifdef JSMN_PARENT_LINKS
-        int parent;
-#endif
-    } jsmntok_t;
-
-    /**
-     * JSON parser. Contains an array of token blocks available. Also stores
-     * the string being parsed now and current position in that string.
-     */
-    typedef struct
-    {
-        unsigned int pos;     /* offset in the JSON string */
-        unsigned int toknext; /* next token to allocate */
-        int toksuper;         /* superior token node, e.g. parent object or array */
-    } jsmn_parser;
-
     /**
      * Create JSON parser over an array of tokens
      */
@@ -129,4 +75,6 @@ char *get_json_array_value(char *key, uint32_t index, const char *json_data, uin
 
 // Revised get_json_array_values function with correct token skipping
 char **get_json_array_values(char *key, char *json_data, uint32_t max_tokens, int *num_values);
+
+int json_token_count(const char *json);
 #endif /* JB_JSMN_EDIT */

jsmn/jsmn_furi.c

@@ -0,0 +1,721 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2010 Serge Zaitsev
+ *
+ * [License text continues...]
+ */
+
+#include <jsmn/jsmn_furi.h>
+
+// Forward declarations of helper functions
+static int jsoneq_furi(const FuriString *json, jsmntok_t *tok, const FuriString *s);
+static int skip_token(const jsmntok_t *tokens, int start, int total);
+
+/**
+ * Allocates a fresh unused token from the token pool.
+ */
+static jsmntok_t *jsmn_alloc_token(jsmn_parser *parser, jsmntok_t *tokens,
+                                   const size_t num_tokens)
+{
+    if (parser->toknext >= num_tokens)
+    {
+        return NULL;
+    }
+    jsmntok_t *tok = &tokens[parser->toknext++];
+    tok->start = tok->end = -1;
+    tok->size = 0;
+#ifdef JSMN_PARENT_LINKS
+    tok->parent = -1;
+#endif
+    return tok;
+}
+
+/**
+ * Fills token type and boundaries.
+ */
+static void jsmn_fill_token(jsmntok_t *token, const jsmntype_t type,
+                            const int start, const int end)
+{
+    token->type = type;
+    token->start = start;
+    token->end = end;
+    token->size = 0;
+}
+
+/**
+ * Fills next available token with JSON primitive.
+ * Now uses FuriString to access characters.
+ */
+static int jsmn_parse_primitive(jsmn_parser *parser, const FuriString *js,
+                                jsmntok_t *tokens, const size_t num_tokens)
+{
+    size_t len = furi_string_size(js);
+    int start = parser->pos;
+
+    for (; parser->pos < len; parser->pos++)
+    {
+        char c = furi_string_get_char(js, parser->pos);
+        switch (c)
+        {
+#ifndef JSMN_STRICT
+        case ':':
+#endif
+        case '\t':
+        case '\r':
+        case '\n':
+        case ' ':
+        case ',':
+        case ']':
+        case '}':
+            goto found;
+        default:
+            break;
+        }
+        if (c < 32 || c >= 127)
+        {
+            parser->pos = start;
+            return JSMN_ERROR_INVAL;
+        }
+    }
+
+#ifdef JSMN_STRICT
+    // In strict mode primitive must be followed by a comma/object/array
+    parser->pos = start;
+    return JSMN_ERROR_PART;
+#endif
+
+found:
+    if (tokens == NULL)
+    {
+        parser->pos--;
+        return 0;
+    }
+    jsmntok_t *token = jsmn_alloc_token(parser, tokens, num_tokens);
+    if (token == NULL)
+    {
+        parser->pos = start;
+        return JSMN_ERROR_NOMEM;
+    }
+    jsmn_fill_token(token, JSMN_PRIMITIVE, start, parser->pos);
+#ifdef JSMN_PARENT_LINKS
+    token->parent = parser->toksuper;
+#endif
+    parser->pos--;
+    return 0;
+}
+
+/**
+ * Fills next token with JSON string.
+ * Now uses FuriString to access characters.
+ */
+static int jsmn_parse_string(jsmn_parser *parser, const FuriString *js,
+                             jsmntok_t *tokens, const size_t num_tokens)
+{
+    size_t len = furi_string_size(js);
+    int start = parser->pos;
+    parser->pos++;
+
+    for (; parser->pos < len; parser->pos++)
+    {
+        char c = furi_string_get_char(js, parser->pos);
+        if (c == '\"')
+        {
+            if (tokens == NULL)
+            {
+                return 0;
+            }
+            jsmntok_t *token = jsmn_alloc_token(parser, tokens, num_tokens);
+            if (token == NULL)
+            {
+                parser->pos = start;
+                return JSMN_ERROR_NOMEM;
+            }
+            jsmn_fill_token(token, JSMN_STRING, start + 1, parser->pos);
+#ifdef JSMN_PARENT_LINKS
+            token->parent = parser->toksuper;
+#endif
+            return 0;
+        }
+
+        if (c == '\\' && (parser->pos + 1) < len)
+        {
+            parser->pos++;
+            char esc = furi_string_get_char(js, parser->pos);
+            switch (esc)
+            {
+            case '\"':
+            case '/':
+            case '\\':
+            case 'b':
+            case 'f':
+            case 'r':
+            case 'n':
+            case 't':
+                break;
+            case 'u':
+            {
+                parser->pos++;
+                for (int i = 0; i < 4 && parser->pos < len; i++)
+                {
+                    char hex = furi_string_get_char(js, parser->pos);
+                    if (!((hex >= '0' && hex <= '9') ||
+                          (hex >= 'A' && hex <= 'F') ||
+                          (hex >= 'a' && hex <= 'f')))
+                    {
+                        parser->pos = start;
+                        return JSMN_ERROR_INVAL;
+                    }
+                    parser->pos++;
+                }
+                parser->pos--;
+                break;
+            }
+            default:
+                parser->pos = start;
+                return JSMN_ERROR_INVAL;
+            }
+        }
+    }
+    parser->pos = start;
+    return JSMN_ERROR_PART;
+}
+
+/**
+ * Create JSON parser
+ */
+void jsmn_init_furi(jsmn_parser *parser)
+{
+    parser->pos = 0;
+    parser->toknext = 0;
+    parser->toksuper = -1;
+}
+
+/**
+ * Parse JSON string and fill tokens.
+ * Now uses FuriString for the input JSON.
+ */
+int jsmn_parse_furi(jsmn_parser *parser, const FuriString *js,
+                    jsmntok_t *tokens, const unsigned int num_tokens)
+{
+    size_t len = furi_string_size(js);
+    int r;
+    int i;
+    int count = parser->toknext;
+
+    for (; parser->pos < len; parser->pos++)
+    {
+        char c = furi_string_get_char(js, parser->pos);
+        jsmntype_t type;
+
+        switch (c)
+        {
+        case '{':
+        case '[':
+        {
+            count++;
+            if (tokens == NULL)
+            {
+                break;
+            }
+            jsmntok_t *token = jsmn_alloc_token(parser, tokens, num_tokens);
+            if (token == NULL)
+                return JSMN_ERROR_NOMEM;
+            if (parser->toksuper != -1)
+            {
+                jsmntok_t *t = &tokens[parser->toksuper];
+#ifdef JSMN_STRICT
+                if (t->type == JSMN_OBJECT)
+                    return JSMN_ERROR_INVAL;
+#endif
+                t->size++;
+#ifdef JSMN_PARENT_LINKS
+                token->parent = parser->toksuper;
+#endif
+            }
+            token->type = (c == '{' ? JSMN_OBJECT : JSMN_ARRAY);
+            token->start = parser->pos;
+            parser->toksuper = parser->toknext - 1;
+            break;
+        }
+        case '}':
+        case ']':
+            if (tokens == NULL)
+            {
+                break;
+            }
+            type = (c == '}' ? JSMN_OBJECT : JSMN_ARRAY);
+#ifdef JSMN_PARENT_LINKS
+            if (parser->toknext < 1)
+            {
+                return JSMN_ERROR_INVAL;
+            }
+            {
+                jsmntok_t *token = &tokens[parser->toknext - 1];
+                for (;;)
+                {
+                    if (token->start != -1 && token->end == -1)
+                    {
+                        if (token->type != type)
+                            return JSMN_ERROR_INVAL;
+                        token->end = parser->pos + 1;
+                        parser->toksuper = token->parent;
+                        break;
+                    }
+                    if (token->parent == -1)
+                    {
+                        if (token->type != type || parser->toksuper == -1)
+                        {
+                            return JSMN_ERROR_INVAL;
+                        }
+                        break;
+                    }
+                    token = &tokens[token->parent];
+                }
+            }
+#else
+            {
+                jsmntok_t *token;
+                for (i = parser->toknext - 1; i >= 0; i--)
+                {
+                    token = &tokens[i];
+                    if (token->start != -1 && token->end == -1)
+                    {
+                        if (token->type != type)
+                            return JSMN_ERROR_INVAL;
+                        parser->toksuper = -1;
+                        token->end = parser->pos + 1;
+                        break;
+                    }
+                }
+                if (i == -1)
+                    return JSMN_ERROR_INVAL;
+                for (; i >= 0; i--)
+                {
+                    token = &tokens[i];
+                    if (token->start != -1 && token->end == -1)
+                    {
+                        parser->toksuper = i;
+                        break;
+                    }
+                }
+            }
+#endif
+            break;
+        case '\"':
+            r = jsmn_parse_string(parser, js, tokens, num_tokens);
+            if (r < 0)
+                return r;
+            count++;
+            if (parser->toksuper != -1 && tokens != NULL)
+            {
+                tokens[parser->toksuper].size++;
+            }
+            break;
+        case '\t':
+        case '\r':
+        case '\n':
+        case ' ':
+            // Whitespace - ignore
+            break;
+        case ':':
+            parser->toksuper = parser->toknext - 1;
+            break;
+        case ',':
+            if (tokens != NULL && parser->toksuper != -1 &&
+                tokens[parser->toksuper].type != JSMN_ARRAY &&
+                tokens[parser->toksuper].type != JSMN_OBJECT)
+            {
+#ifdef JSMN_PARENT_LINKS
+                parser->toksuper = tokens[parser->toksuper].parent;
+#else
+                for (i = parser->toknext - 1; i >= 0; i--)
+                {
+                    if (tokens[i].type == JSMN_ARRAY || tokens[i].type == JSMN_OBJECT)
+                    {
+                        if (tokens[i].start != -1 && tokens[i].end == -1)
+                        {
+                            parser->toksuper = i;
+                            break;
+                        }
+                    }
+                }
+#endif
+            }
+            break;
+#ifdef JSMN_STRICT
+        case '-':
+        case '0':
+        case '1':
+        case '2':
+        case '3':
+        case '4':
+        case '5':
+        case '6':
+        case '7':
+        case '8':
+        case '9':
+        case 't':
+        case 'f':
+        case 'n':
+            if (tokens != NULL && parser->toksuper != -1)
+            {
+                const jsmntok_t *t = &tokens[parser->toksuper];
+                if (t->type == JSMN_OBJECT ||
+                    (t->type == JSMN_STRING && t->size != 0))
+                {
+                    return JSMN_ERROR_INVAL;
+                }
+            }
+#else
+        default:
+#endif
+            r = jsmn_parse_primitive(parser, js, tokens, num_tokens);
+            if (r < 0)
+                return r;
+            count++;
+            if (parser->toksuper != -1 && tokens != NULL)
+            {
+                tokens[parser->toksuper].size++;
+            }
+            break;
+#ifdef JSMN_STRICT
+        default:
+            return JSMN_ERROR_INVAL;
+#endif
+        }
+    }
+
+    if (tokens != NULL)
+    {
+        for (i = parser->toknext - 1; i >= 0; i--)
+        {
+            if (tokens[i].start != -1 && tokens[i].end == -1)
+            {
+                return JSMN_ERROR_PART;
+            }
+        }
+    }
+
+    return count;
+}
+
+// The rest of your code (e.g., get_json_value_furi, get_json_array_value_furi, etc.)
+// remains unchanged and can still rely on these updated parsing functions.
+
+// Helper function to create a JSON object: {"key":"value"}
+FuriString *jsmn_create_object(const FuriString *key, const FuriString *value)
+{
+    FuriString *result = furi_string_alloc();
+    furi_string_printf(result, "{\"%s\":\"%s\"}",
+                       furi_string_get_cstr(key),
+                       furi_string_get_cstr(value));
+    return result; // Caller responsible for furi_string_free
+}
+
+// Helper function to compare JSON keys
+static int jsoneq_furi(const FuriString *json, jsmntok_t *tok, const FuriString *s)
+{
+    size_t s_len = furi_string_size(s);
+    size_t tok_len = tok->end - tok->start;
+
+    if (tok->type != JSMN_STRING)
+        return -1;
+    if (s_len != tok_len)
+        return -1;
+
+    FuriString *sub = furi_string_alloc_set(json);
+    furi_string_mid(sub, tok->start, tok_len);
+
+    int res = furi_string_cmp(sub, s);
+    furi_string_free(sub);
+
+    return (res == 0) ? 0 : -1;
+}
+
+// Skip a token and its descendants
+static int skip_token(const jsmntok_t *tokens, int start, int total)
+{
+    if (start < 0 || start >= total)
+        return -1;
+
+    int i = start;
+    if (tokens[i].type == JSMN_OBJECT)
+    {
+        int pairs = tokens[i].size;
+        i++;
+        for (int p = 0; p < pairs; p++)
+        {
+            i++; // skip key
+            if (i >= total)
+                return -1;
+            i = skip_token(tokens, i, total); // skip value
+            if (i == -1)
+                return -1;
+        }
+        return i;
+    }
+    else if (tokens[i].type == JSMN_ARRAY)
+    {
+        int elems = tokens[i].size;
+        i++;
+        for (int e = 0; e < elems; e++)
+        {
+            i = skip_token(tokens, i, total);
+            if (i == -1)
+                return -1;
+        }
+        return i;
+    }
+    else
+    {
+        return i + 1;
+    }
+}
+
+/**
+ * Parse JSON and return the value associated with a given char* key.
+ */
+FuriString *get_json_value_furi(const char *key, const FuriString *json_data, uint32_t max_tokens)
+{
+    if (json_data == NULL)
+    {
+        FURI_LOG_E("JSMM.H", "JSON data is NULL");
+        return NULL;
+    }
+
+    // Create a temporary FuriString from key
+    FuriString *key_str = furi_string_alloc();
+    furi_string_cat_str(key_str, key);
+
+    jsmn_parser parser;
+    jsmn_init_furi(&parser);
+
+    jsmntok_t *tokens = (jsmntok_t *)malloc(sizeof(jsmntok_t) * max_tokens);
+    if (tokens == NULL)
+    {
+        FURI_LOG_E("JSMM.H", "Failed to allocate memory for JSON tokens.");
+        furi_string_free(key_str);
+        return NULL;
+    }
+
+    int ret = jsmn_parse_furi(&parser, json_data, tokens, max_tokens);
+    if (ret < 0)
+    {
+        FURI_LOG_E("JSMM.H", "Failed to parse JSON: %d", ret);
+        free(tokens);
+        furi_string_free(key_str);
+        return NULL;
+    }
+
+    if (ret < 1 || tokens[0].type != JSMN_OBJECT)
+    {
+        FURI_LOG_E("JSMM.H", "Root element is not an object.");
+        free(tokens);
+        furi_string_free(key_str);
+        return NULL;
+    }
+
+    for (int i = 1; i < ret; i++)
+    {
+        if (jsoneq_furi(json_data, &tokens[i], key_str) == 0)
+        {
+            int length = tokens[i + 1].end - tokens[i + 1].start;
+            FuriString *value = furi_string_alloc_set(json_data);
+            furi_string_mid(value, tokens[i + 1].start, length);
+            free(tokens);
+            furi_string_free(key_str);
+            return value;
+        }
+    }
+
+    free(tokens);
+    furi_string_free(key_str);
+    FURI_LOG_E("JSMM.H", "Failed to find the key in the JSON.");
+    return NULL;
+}
+
+/**
+ * Return the value at a given index in a JSON array for a given char* key.
+ */
+FuriString *get_json_array_value_furi(const char *key, uint32_t index, const FuriString *json_data, uint32_t max_tokens)
+{
+    // Convert key to FuriString and call get_json_value_furi
+    FuriString *array_str = get_json_value_furi(key, json_data, max_tokens);
+    if (array_str == NULL)
+    {
+        FURI_LOG_E("JSMM.H", "Failed to get array for key");
+        return NULL;
+    }
+
+    jsmn_parser parser;
+    jsmn_init_furi(&parser);
+
+    jsmntok_t *tokens = (jsmntok_t *)malloc(sizeof(jsmntok_t) * max_tokens);
+    if (tokens == NULL)
+    {
+        FURI_LOG_E("JSMM.H", "Failed to allocate memory for JSON tokens.");
+        furi_string_free(array_str);
+        return NULL;
+    }
+
+    int ret = jsmn_parse_furi(&parser, array_str, tokens, max_tokens);
+    if (ret < 0)
+    {
+        FURI_LOG_E("JSMM.H", "Failed to parse JSON array: %d", ret);
+        free(tokens);
+        furi_string_free(array_str);
+        return NULL;
+    }
+
+    if (ret < 1 || tokens[0].type != JSMN_ARRAY)
+    {
+        FURI_LOG_E("JSMM.H", "Value for key is not an array.");
+        free(tokens);
+        furi_string_free(array_str);
+        return NULL;
+    }
+
+    if (index >= (uint32_t)tokens[0].size)
+    {
+        FURI_LOG_E("JSMM.H", "Index %lu out of bounds for array with size %u.", index, tokens[0].size);
+        free(tokens);
+        furi_string_free(array_str);
+        return NULL;
+    }
+
+    int elem_token = 1;
+    for (uint32_t i = 0; i < index; i++)
+    {
+        elem_token = skip_token(tokens, elem_token, ret);
+        if (elem_token == -1 || elem_token >= ret)
+        {
+            FURI_LOG_E("JSMM.H", "Error skipping tokens to reach element %lu.", i);
+            free(tokens);
+            furi_string_free(array_str);
+            return NULL;
+        }
+    }
+
+    jsmntok_t element = tokens[elem_token];
+    int length = element.end - element.start;
+
+    FuriString *value = furi_string_alloc_set(array_str);
+    furi_string_mid(value, element.start, length);
+
+    free(tokens);
+    furi_string_free(array_str);
+
+    return value;
+}
+
+/**
+ * Extract all object values from a JSON array associated with a given char* key.
+ */
+FuriString **get_json_array_values_furi(const char *key, const FuriString *json_data, uint32_t max_tokens, int *num_values)
+{
+    *num_values = 0;
+
+    // Convert key to FuriString and call get_json_value_furi
+    FuriString *array_str = get_json_value_furi(key, json_data, max_tokens);
+    if (array_str == NULL)
+    {
+        FURI_LOG_E("JSMM.H", "Failed to get array for key");
+        return NULL;
+    }
+
+    jsmn_parser parser;
+    jsmn_init_furi(&parser);
+
+    jsmntok_t *tokens = (jsmntok_t *)malloc(sizeof(jsmntok_t) * max_tokens);
+    if (tokens == NULL)
+    {
+        FURI_LOG_E("JSMM.H", "Failed to allocate memory for JSON tokens.");
+        furi_string_free(array_str);
+        return NULL;
+    }
+
+    int ret = jsmn_parse_furi(&parser, array_str, tokens, max_tokens);
+    if (ret < 0)
+    {
+        FURI_LOG_E("JSMM.H", "Failed to parse JSON array: %d", ret);
+        free(tokens);
+        furi_string_free(array_str);
+        return NULL;
+    }
+
+    if (tokens[0].type != JSMN_ARRAY)
+    {
+        FURI_LOG_E("JSMM.H", "Value for key is not an array.");
+        free(tokens);
+        furi_string_free(array_str);
+        return NULL;
+    }
+
+    int array_size = tokens[0].size;
+    FuriString **values = (FuriString **)malloc(array_size * sizeof(FuriString *));
+    if (values == NULL)
+    {
+        FURI_LOG_E("JSMM.H", "Failed to allocate memory for array of values.");
+        free(tokens);
+        furi_string_free(array_str);
+        return NULL;
+    }
+
+    int actual_num_values = 0;
+    int current_token = 1;
+    for (int i = 0; i < array_size; i++)
+    {
+        if (current_token >= ret)
+        {
+            FURI_LOG_E("JSMM.H", "Unexpected end of tokens while traversing array.");
+            break;
+        }
+
+        jsmntok_t element = tokens[current_token];
+
+        int length = element.end - element.start;
+        FuriString *value = furi_string_alloc_set(array_str);
+        furi_string_mid(value, element.start, length);
+
+        values[actual_num_values] = value;
+        actual_num_values++;
+
+        // Skip this element and its descendants
+        current_token = skip_token(tokens, current_token, ret);
+        if (current_token == -1)
+        {
+            FURI_LOG_E("JSMM.H", "Error skipping tokens after element %d.", i);
+            break;
+        }
+    }
+
+    *num_values = actual_num_values;
+    if (actual_num_values < array_size)
+    {
+        FuriString **reduced_values = (FuriString **)realloc(values, actual_num_values * sizeof(FuriString *));
+        if (reduced_values != NULL)
+        {
+            values = reduced_values;
+        }
+    }
+
+    free(tokens);
+    furi_string_free(array_str);
+    return values;
+}
+
+int json_token_count_furi(const FuriString *json)
+{
+    if (json == NULL)
+    {
+        return JSMN_ERROR_INVAL;
+    }
+
+    jsmn_parser parser;
+    jsmn_init_furi(&parser);
+
+    // Pass NULL for tokens and 0 for num_tokens to get the token count only
+    int ret = jsmn_parse_furi(&parser, json, NULL, 0);
+    return ret; // If ret >= 0, it represents the number of tokens needed.
+}

jsmn/jsmn_furi.h

@@ -0,0 +1,74 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2010 Serge Zaitsev
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * [License text continues...]
+ */
+
+#ifndef JSMN_FURI_H
+#define JSMN_FURI_H
+
+#include <jsmn/jsmn_h.h>
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#ifdef JSMN_STATIC
+#define JSMN_API static
+#else
+#define JSMN_API extern
+#endif
+
+    JSMN_API void jsmn_init_furi(jsmn_parser *parser);
+    JSMN_API int jsmn_parse_furi(jsmn_parser *parser, const FuriString *js,
+                                 jsmntok_t *tokens, const unsigned int num_tokens);
+
+#ifndef JSMN_HEADER
+/* Implementation in jsmn_furi.c */
+#endif /* JSMN_HEADER */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* JSMN_FURI_H */
+
+#ifndef JB_JSMN_FURI_EDIT
+#define JB_JSMN_FURI_EDIT
+
+// Helper function to create a JSON object
+FuriString *jsmn_create_object(const FuriString *key, const FuriString *value);
+
+// Updated signatures to accept const char* key
+FuriString *get_json_value_furi(const char *key, const FuriString *json_data, uint32_t max_tokens);
+FuriString *get_json_array_value_furi(const char *key, uint32_t index, const FuriString *json_data, uint32_t max_tokens);
+FuriString **get_json_array_values_furi(const char *key, const FuriString *json_data, uint32_t max_tokens, int *num_values);
+
+int json_token_count_furi(const FuriString *json);
+/* Example usage:
+char *json = "{\"key1\":\"value1\",\"key2\":\"value2\"}";
+FuriString *json_data = char_to_furi_string(json);
+if (!json_data)
+{
+    FURI_LOG_E(TAG, "Failed to allocate FuriString");
+    return -1;
+}
+FuriString *value = get_json_value_furi("key1", json_data, json_token_count_furi(json_data));
+if (value)
+{
+    FURI_LOG_I(TAG, "Value: %s", furi_string_get_cstr(value));
+    furi_string_free(value);
+}
+furi_string_free(json_data);
+*/
+#endif /* JB_JSMN_EDIT */

jsmn/jsmn_h.c

@@ -0,0 +1,14 @@
+#include <jsmn/jsmn_h.h>
+FuriString *char_to_furi_string(const char *str)
+{
+    FuriString *furi_str = furi_string_alloc();
+    if (!furi_str)
+    {
+        return NULL;
+    }
+    for (size_t i = 0; i < strlen(str); i++)
+    {
+        furi_string_push_back(furi_str, str[i]);
+    }
+    return furi_str;
+}

jsmn/jsmn_h.h

@@ -0,0 +1,41 @@
+#pragma once
+#include <furi.h>
+#include <stddef.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+typedef enum
+{
+    JSMN_UNDEFINED = 0,
+    JSMN_OBJECT = 1 << 0,
+    JSMN_ARRAY = 1 << 1,
+    JSMN_STRING = 1 << 2,
+    JSMN_PRIMITIVE = 1 << 3
+} jsmntype_t;
+
+enum jsmnerr
+{
+    JSMN_ERROR_NOMEM = -1,
+    JSMN_ERROR_INVAL = -2,
+    JSMN_ERROR_PART = -3
+};
+
+typedef struct
+{
+    jsmntype_t type;
+    int start;
+    int end;
+    int size;
+#ifdef JSMN_PARENT_LINKS
+    int parent;
+#endif
+} jsmntok_t;
+
+typedef struct
+{
+    unsigned int pos;     /* offset in the JSON string */
+    unsigned int toknext; /* next token to allocate */
+    int toksuper;         /* superior token node, e.g. parent object or array */
+} jsmn_parser;
+
+FuriString *char_to_furi_string(const char *str);