102 lines
2.2 KiB
C
102 lines
2.2 KiB
C
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/**
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* @file
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* The main code of the zh_json component.
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*
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*/
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#include "zh_json.h"
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static void _resize(zh_json_t *json, uint8_t capacity);
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static void *_get_name(zh_json_t *json, uint8_t index);
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static void *_get_value(zh_json_t *json, uint8_t index);
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esp_err_t zh_json_init(zh_json_t *json)
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{
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if (json == NULL)
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{
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return ESP_ERR_INVALID_ARG;
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}
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json->capacity = 0;
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json->size = 0;
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json->names = calloc(json->capacity, sizeof(char *));
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json->values = calloc(json->capacity, sizeof(char *));
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return ESP_OK;
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}
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esp_err_t zh_json_free(zh_json_t *json)
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{
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if (json == NULL)
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{
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return ESP_ERR_INVALID_ARG;
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}
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free(json->names);
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free(json->values);
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return ESP_OK;
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}
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static void _resize(zh_json_t *json, uint8_t capacity)
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{
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char **name = realloc(json->names, sizeof(char *) * capacity);
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char **value = realloc(json->values, sizeof(char *) * capacity);
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json->names = name;
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json->values = value;
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json->capacity = capacity;
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}
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static void *_get_name(zh_json_t *json, uint8_t index)
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{
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char *name = NULL;
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if (index < json->size)
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{
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name = json->names[index];
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}
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return name;
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}
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static void *_get_value(zh_json_t *json, uint8_t index)
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{
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char *value = NULL;
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if (index < json->size)
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{
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value = json->values[index];
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}
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return value;
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}
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esp_err_t zh_json_add(zh_json_t *json, char *name, char *value)
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{
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if (json == NULL || name == NULL || value == NULL)
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{
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return ESP_ERR_INVALID_ARG;
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}
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if (json->capacity == json->size)
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{
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_resize(json, json->capacity + 1);
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}
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json->names[json->size] = name;
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json->values[json->size++] = value;
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return ESP_OK;
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}
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esp_err_t zh_json_create(zh_json_t *json, char *buffer)
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{
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if (json == NULL || buffer == NULL)
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{
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return ESP_ERR_INVALID_ARG;
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}
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strcat(buffer, "{ ");
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for (uint8_t i = 0; i < json->size; ++i)
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{
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strcat(buffer, "\"");
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strcat(buffer, _get_name(json, i));
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strcat(buffer, "\": \"");
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strcat(buffer, _get_value(json, i));
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strcat(buffer, "\"");
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if (i != json->size - 1)
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{
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strcat(buffer, ", ");
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}
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}
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strcat(buffer, " }");
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return ESP_OK;
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}
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