Damian Gabino
Host driver/HAL to build a LoRa Picocell Gateway which communicates through USB with a concentrator board based on Semtech SX1308 multi-channel modem and SX1257/SX1255 RF transceivers.
Diff: util_pkt_logger/src/parson.c
- Revision:
- 0:102b50f941d0
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/util_pkt_logger/src/parson.c Wed Apr 11 14:38:42 2018 +0000
@@ -0,0 +1,1919 @@
+/*
+ Parson ( http://kgabis.github.com/parson/ )
+ Copyright (c) 2012 - 2016 Krzysztof Gabis
+
+ 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:
+
+ The above copyright notice and this permission notice shall be included in
+ all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ THE SOFTWARE.
+*/
+#ifdef _MSC_VER
+#define _CRT_SECURE_NO_WARNINGS
+#endif
+
+#include "parson.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <math.h>
+
+#define STARTING_CAPACITY 15
+#define ARRAY_MAX_CAPACITY 122880 /* 15*(2^13) */
+#define OBJECT_MAX_CAPACITY 960 /* 15*(2^6) */
+#define MAX_NESTING 19
+#define DOUBLE_SERIALIZATION_FORMAT "%f"
+
+#define SIZEOF_TOKEN(a) (sizeof(a) - 1)
+#define SKIP_CHAR(str) ((*str)++)
+#define SKIP_WHITESPACES(str) while (isspace(**str)) { SKIP_CHAR(str); }
+#define MAX(a, b) ((a) > (b) ? (a) : (b))
+
+#undef malloc
+#undef free
+
+static JSON_Malloc_Function parson_malloc = malloc;
+static JSON_Free_Function parson_free = free;
+
+#define IS_CONT(b) (((unsigned char)(b) & 0xC0) == 0x80) /* is utf-8 continuation byte */
+
+/* Type definitions */
+typedef union json_value_value {
+ char *string;
+ double number;
+ JSON_Object *object;
+ JSON_Array *array;
+ int boolean;
+ int null;
+} JSON_Value_Value;
+
+struct json_value_t {
+ JSON_Value_Type type;
+ JSON_Value_Value value;
+};
+
+struct json_object_t {
+ char **names;
+ JSON_Value **values;
+ size_t count;
+ size_t capacity;
+};
+
+struct json_array_t {
+ JSON_Value **items;
+ size_t count;
+ size_t capacity;
+};
+
+/* Various */
+static char * read_file(const char *filename);
+static void remove_comments(char *string, const char *start_token, const char *end_token);
+static char * parson_strndup(const char *string, size_t n);
+static char * parson_strdup(const char *string);
+static int is_utf16_hex(const unsigned char *string);
+static int num_bytes_in_utf8_sequence(unsigned char c);
+static int verify_utf8_sequence(const unsigned char *string, int *len);
+static int is_valid_utf8(const char *string, size_t string_len);
+static int is_decimal(const char *string, size_t length);
+
+/* JSON Object */
+static JSON_Object * json_object_init(void);
+static JSON_Status json_object_add(JSON_Object *object, const char *name, JSON_Value *value);
+static JSON_Status json_object_resize(JSON_Object *object, size_t new_capacity);
+static JSON_Value * json_object_nget_value(const JSON_Object *object, const char *name, size_t n);
+static void json_object_free(JSON_Object *object);
+
+/* JSON Array */
+static JSON_Array * json_array_init(void);
+static JSON_Status json_array_add(JSON_Array *array, JSON_Value *value);
+static JSON_Status json_array_resize(JSON_Array *array, size_t new_capacity);
+static void json_array_free(JSON_Array *array);
+
+/* JSON Value */
+static JSON_Value * json_value_init_string_no_copy(char *string);
+
+/* Parser */
+static void skip_quotes(const char **string);
+static int parse_utf_16(const char **unprocessed, char **processed);
+static char * process_string(const char *input, size_t len);
+static char * get_quoted_string(const char **string);
+static JSON_Value * parse_object_value(const char **string, size_t nesting);
+static JSON_Value * parse_array_value(const char **string, size_t nesting);
+static JSON_Value * parse_string_value(const char **string);
+static JSON_Value * parse_boolean_value(const char **string);
+static JSON_Value * parse_number_value(const char **string);
+static JSON_Value * parse_null_value(const char **string);
+static JSON_Value * parse_value(const char **string, size_t nesting);
+
+/* Serialization */
+static int json_serialize_to_buffer_r(const JSON_Value *value, char *buf, int level, int is_pretty, char *num_buf);
+static int json_serialize_string(const char *string, char *buf);
+static int append_indent(char *buf, int level);
+static int append_string(char *buf, const char *string);
+
+/* Various */
+static char * parson_strndup(const char *string, size_t n) {
+ char *output_string = (char*)parson_malloc(n + 1);
+ if (!output_string) {
+ return NULL;
+ }
+ output_string[n] = '\0';
+ strncpy(output_string, string, n);
+ return output_string;
+}
+
+static char * parson_strdup(const char *string) {
+ return parson_strndup(string, strlen(string));
+}
+
+static int is_utf16_hex(const unsigned char *s) {
+ return isxdigit(s[0]) && isxdigit(s[1]) && isxdigit(s[2]) && isxdigit(s[3]);
+}
+
+static int num_bytes_in_utf8_sequence(unsigned char c) {
+ if (c == 0xC0 || c == 0xC1 || c > 0xF4 || IS_CONT(c)) {
+ return 0;
+ } else if ((c & 0x80) == 0) { /* 0xxxxxxx */
+ return 1;
+ } else if ((c & 0xE0) == 0xC0) { /* 110xxxxx */
+ return 2;
+ } else if ((c & 0xF0) == 0xE0) { /* 1110xxxx */
+ return 3;
+ } else if ((c & 0xF8) == 0xF0) { /* 11110xxx */
+ return 4;
+ }
+ return 0; /* won't happen */
+}
+
+static int verify_utf8_sequence(const unsigned char *string, int *len) {
+ unsigned int cp = 0;
+ *len = num_bytes_in_utf8_sequence(string[0]);
+
+ if (*len == 1) {
+ cp = string[0];
+ } else if (*len == 2 && IS_CONT(string[1])) {
+ cp = string[0] & 0x1F;
+ cp = (cp << 6) | (string[1] & 0x3F);
+ } else if (*len == 3 && IS_CONT(string[1]) && IS_CONT(string[2])) {
+ cp = ((unsigned char)string[0]) & 0xF;
+ cp = (cp << 6) | (string[1] & 0x3F);
+ cp = (cp << 6) | (string[2] & 0x3F);
+ } else if (*len == 4 && IS_CONT(string[1]) && IS_CONT(string[2]) && IS_CONT(string[3])) {
+ cp = string[0] & 0x7;
+ cp = (cp << 6) | (string[1] & 0x3F);
+ cp = (cp << 6) | (string[2] & 0x3F);
+ cp = (cp << 6) | (string[3] & 0x3F);
+ } else {
+ return 0;
+ }
+
+ /* overlong encodings */
+ if ((cp < 0x80 && *len > 1) ||
+ (cp < 0x800 && *len > 2) ||
+ (cp < 0x10000 && *len > 3)) {
+ return 0;
+ }
+
+ /* invalid unicode */
+ if (cp > 0x10FFFF) {
+ return 0;
+ }
+
+ /* surrogate halves */
+ if (cp >= 0xD800 && cp <= 0xDFFF) {
+ return 0;
+ }
+
+ return 1;
+}
+
+static int is_valid_utf8(const char *string, size_t string_len) {
+ int len = 0;
+ const char *string_end = string + string_len;
+ while (string < string_end) {
+ if (!verify_utf8_sequence((const unsigned char*)string, &len)) {
+ return 0;
+ }
+ string += len;
+ }
+ return 1;
+}
+
+static int is_decimal(const char *string, size_t length) {
+ if (length > 1 && string[0] == '0' && string[1] != '.') {
+ return 0;
+ }
+ if (length > 2 && !strncmp(string, "-0", 2) && string[2] != '.') {
+ return 0;
+ }
+ while (length--)
+ if (strchr("xX", string[length])) {
+ return 0;
+ }
+ return 1;
+}
+
+static char * read_file(const char * filename) {
+ FILE *fp = fopen(filename, "r");
+ size_t file_size;
+ long pos;
+ char *file_contents;
+ if (!fp) {
+ return NULL;
+ }
+ fseek(fp, 0L, SEEK_END);
+ pos = ftell(fp);
+ if (pos < 0) {
+ fclose(fp);
+ return NULL;
+ }
+ file_size = pos;
+ rewind(fp);
+ file_contents = (char*)parson_malloc(sizeof(char) * (file_size + 1));
+ if (!file_contents) {
+ fclose(fp);
+ return NULL;
+ }
+ if (fread(file_contents, file_size, 1, fp) < 1) {
+ if (ferror(fp)) {
+ fclose(fp);
+ parson_free(file_contents);
+ return NULL;
+ }
+ }
+ fclose(fp);
+ file_contents[file_size] = '\0';
+ return file_contents;
+}
+
+static void remove_comments(char *string, const char *start_token, const char *end_token) {
+ int in_string = 0, escaped = 0;
+ size_t i;
+ char *ptr = NULL, current_char;
+ size_t start_token_len = strlen(start_token);
+ size_t end_token_len = strlen(end_token);
+ if (start_token_len == 0 || end_token_len == 0) {
+ return;
+ }
+ while ((current_char = *string) != '\0') {
+ if (current_char == '\\' && !escaped) {
+ escaped = 1;
+ string++;
+ continue;
+ } else if (current_char == '\"' && !escaped) {
+ in_string = !in_string;
+ } else if (!in_string && strncmp(string, start_token, start_token_len) == 0) {
+ for(i = 0; i < start_token_len; i++) {
+ string[i] = ' ';
+ }
+ string = string + start_token_len;
+ ptr = strstr(string, end_token);
+ if (!ptr) {
+ return;
+ }
+ for (i = 0; i < (ptr - string) + end_token_len; i++) {
+ string[i] = ' ';
+ }
+ string = ptr + end_token_len - 1;
+ }
+ escaped = 0;
+ string++;
+ }
+}
+
+/* JSON Object */
+static JSON_Object * json_object_init(void) {
+ JSON_Object *new_obj = (JSON_Object*)parson_malloc(sizeof(JSON_Object));
+ if (!new_obj) {
+ return NULL;
+ }
+ new_obj->names = (char**)NULL;
+ new_obj->values = (JSON_Value**)NULL;
+ new_obj->capacity = 0;
+ new_obj->count = 0;
+ return new_obj;
+}
+
+static JSON_Status json_object_add(JSON_Object *object, const char *name, JSON_Value *value) {
+ size_t index = 0;
+ if (object == NULL || name == NULL || value == NULL) {
+ return JSONFailure;
+ }
+ if (object->count >= object->capacity) {
+ size_t new_capacity = MAX(object->capacity * 2, STARTING_CAPACITY);
+ if (new_capacity > OBJECT_MAX_CAPACITY) {
+ return JSONFailure;
+ }
+ if (json_object_resize(object, new_capacity) == JSONFailure) {
+ return JSONFailure;
+ }
+ }
+ if (json_object_get_value(object, name) != NULL) {
+ return JSONFailure;
+ }
+ index = object->count;
+ object->names[index] = parson_strdup(name);
+ if (object->names[index] == NULL) {
+ return JSONFailure;
+ }
+ object->values[index] = value;
+ object->count++;
+ return JSONSuccess;
+}
+
+static JSON_Status json_object_resize(JSON_Object *object, size_t new_capacity) {
+ char **temp_names = NULL;
+ JSON_Value **temp_values = NULL;
+
+ if ((object->names == NULL && object->values != NULL) ||
+ (object->names != NULL && object->values == NULL) ||
+ new_capacity == 0) {
+ return JSONFailure; /* Shouldn't happen */
+ }
+
+ temp_names = (char**)parson_malloc(new_capacity * sizeof(char*));
+ if (temp_names == NULL) {
+ return JSONFailure;
+ }
+
+ temp_values = (JSON_Value**)parson_malloc(new_capacity * sizeof(JSON_Value*));
+ if (temp_values == NULL) {
+ parson_free(temp_names);
+ return JSONFailure;
+ }
+
+ if (object->names != NULL && object->values != NULL && object->count > 0) {
+ memcpy(temp_names, object->names, object->count * sizeof(char*));
+ memcpy(temp_values, object->values, object->count * sizeof(JSON_Value*));
+ }
+ parson_free(object->names);
+ parson_free(object->values);
+ object->names = temp_names;
+ object->values = temp_values;
+ object->capacity = new_capacity;
+ return JSONSuccess;
+}
+
+static JSON_Value * json_object_nget_value(const JSON_Object *object, const char *name, size_t n) {
+ size_t i, name_length;
+ for (i = 0; i < json_object_get_count(object); i++) {
+ name_length = strlen(object->names[i]);
+ if (name_length != n) {
+ continue;
+ }
+ if (strncmp(object->names[i], name, n) == 0) {
+ return object->values[i];
+ }
+ }
+ return NULL;
+}
+
+static void json_object_free(JSON_Object *object) {
+ while(object->count--) {
+ parson_free(object->names[object->count]);
+ json_value_free(object->values[object->count]);
+ }
+ parson_free(object->names);
+ parson_free(object->values);
+ parson_free(object);
+}
+
+/* JSON Array */
+static JSON_Array * json_array_init(void) {
+ JSON_Array *new_array = (JSON_Array*)parson_malloc(sizeof(JSON_Array));
+ if (!new_array) {
+ return NULL;
+ }
+ new_array->items = (JSON_Value**)NULL;
+ new_array->capacity = 0;
+ new_array->count = 0;
+ return new_array;
+}
+
+static JSON_Status json_array_add(JSON_Array *array, JSON_Value *value) {
+ if (array->count >= array->capacity) {
+ size_t new_capacity = MAX(array->capacity * 2, STARTING_CAPACITY);
+ if (new_capacity > ARRAY_MAX_CAPACITY) {
+ return JSONFailure;
+ }
+ if (json_array_resize(array, new_capacity) == JSONFailure) {
+ return JSONFailure;
+ }
+ }
+ array->items[array->count] = value;
+ array->count++;
+ return JSONSuccess;
+}
+
+static JSON_Status json_array_resize(JSON_Array *array, size_t new_capacity) {
+ JSON_Value **new_items = NULL;
+ if (new_capacity == 0) {
+ return JSONFailure;
+ }
+ new_items = (JSON_Value**)parson_malloc(new_capacity * sizeof(JSON_Value*));
+ if (new_items == NULL) {
+ return JSONFailure;
+ }
+ if (array->items != NULL && array->count > 0) {
+ memcpy(new_items, array->items, array->count * sizeof(JSON_Value*));
+ }
+ parson_free(array->items);
+ array->items = new_items;
+ array->capacity = new_capacity;
+ return JSONSuccess;
+}
+
+static void json_array_free(JSON_Array *array) {
+ while (array->count--) {
+ json_value_free(array->items[array->count]);
+ }
+ parson_free(array->items);
+ parson_free(array);
+}
+
+/* JSON Value */
+static JSON_Value * json_value_init_string_no_copy(char *string) {
+ JSON_Value *new_value = (JSON_Value*)parson_malloc(sizeof(JSON_Value));
+ if (!new_value) {
+ return NULL;
+ }
+ new_value->type = JSONString;
+ new_value->value.string = string;
+ return new_value;
+}
+
+/* Parser */
+static void skip_quotes(const char **string) {
+ SKIP_CHAR(string);
+ while (**string != '\"') {
+ if (**string == '\0') {
+ return;
+ }
+ if (**string == '\\') {
+ SKIP_CHAR(string);
+ if (**string == '\0') {
+ return;
+ }
+ }
+ SKIP_CHAR(string);
+ }
+ SKIP_CHAR(string);
+}
+
+static int parse_utf_16(const char **unprocessed, char **processed) {
+ unsigned int cp, lead, trail;
+ char *processed_ptr = *processed;
+ const char *unprocessed_ptr = *unprocessed;
+ unprocessed_ptr++; /* skips u */
+ if (!is_utf16_hex((const unsigned char*)unprocessed_ptr) || sscanf(unprocessed_ptr, "%4x", &cp) == EOF) {
+ return JSONFailure;
+ }
+ if (cp < 0x80) {
+ *processed_ptr = cp; /* 0xxxxxxx */
+ } else if (cp < 0x800) {
+ *processed_ptr++ = ((cp >> 6) & 0x1F) | 0xC0; /* 110xxxxx */
+ *processed_ptr = ((cp ) & 0x3F) | 0x80; /* 10xxxxxx */
+ } else if (cp < 0xD800 || cp > 0xDFFF) {
+ *processed_ptr++ = ((cp >> 12) & 0x0F) | 0xE0; /* 1110xxxx */
+ *processed_ptr++ = ((cp >> 6) & 0x3F) | 0x80; /* 10xxxxxx */
+ *processed_ptr = ((cp ) & 0x3F) | 0x80; /* 10xxxxxx */
+ } else if (cp >= 0xD800 && cp <= 0xDBFF) { /* lead surrogate (0xD800..0xDBFF) */
+ lead = cp;
+ unprocessed_ptr += 4; /* should always be within the buffer, otherwise previous sscanf would fail */
+ if (*unprocessed_ptr++ != '\\' || *unprocessed_ptr++ != 'u' || /* starts with \u? */
+ !is_utf16_hex((const unsigned char*)unprocessed_ptr) ||
+ sscanf(unprocessed_ptr, "%4x", &trail) == EOF ||
+ trail < 0xDC00 || trail > 0xDFFF) { /* valid trail surrogate? (0xDC00..0xDFFF) */
+ return JSONFailure;
+ }
+ cp = ((((lead - 0xD800) & 0x3FF) << 10) | ((trail - 0xDC00) & 0x3FF)) + 0x010000;
+ *processed_ptr++ = (((cp >> 18) & 0x07) | 0xF0); /* 11110xxx */
+ *processed_ptr++ = (((cp >> 12) & 0x3F) | 0x80); /* 10xxxxxx */
+ *processed_ptr++ = (((cp >> 6) & 0x3F) | 0x80); /* 10xxxxxx */
+ *processed_ptr = (((cp ) & 0x3F) | 0x80); /* 10xxxxxx */
+ } else { /* trail surrogate before lead surrogate */
+ return JSONFailure;
+ }
+ unprocessed_ptr += 3;
+ *processed = processed_ptr;
+ *unprocessed = unprocessed_ptr;
+ return JSONSuccess;
+}
+
+
+/* Copies and processes passed string up to supplied length.
+Example: "\u006Corem ipsum" -> lorem ipsum */
+static char* process_string(const char *input, size_t len) {
+ const char *input_ptr = input;
+ size_t initial_size = (len + 1) * sizeof(char);
+ size_t final_size = 0;
+ char *output = (char*)parson_malloc(initial_size);
+ char *output_ptr = output;
+ char *resized_output = NULL;
+ while ((*input_ptr != '\0') && (size_t)(input_ptr - input) < len) {
+ if (*input_ptr == '\\') {
+ input_ptr++;
+ switch (*input_ptr) {
+ case '\"':
+ *output_ptr = '\"';
+ break;
+ case '\\':
+ *output_ptr = '\\';
+ break;
+ case '/':
+ *output_ptr = '/';
+ break;
+ case 'b':
+ *output_ptr = '\b';
+ break;
+ case 'f':
+ *output_ptr = '\f';
+ break;
+ case 'n':
+ *output_ptr = '\n';
+ break;
+ case 'r':
+ *output_ptr = '\r';
+ break;
+ case 't':
+ *output_ptr = '\t';
+ break;
+ case 'u':
+ if (parse_utf_16(&input_ptr, &output_ptr) == JSONFailure) {
+ goto error;
+ }
+ break;
+ default:
+ goto error;
+ }
+ } else if ((unsigned char)*input_ptr < 0x20) {
+ goto error; /* 0x00-0x19 are invalid characters for json string (http://www.ietf.org/rfc/rfc4627.txt) */
+ } else {
+ *output_ptr = *input_ptr;
+ }
+ output_ptr++;
+ input_ptr++;
+ }
+ *output_ptr = '\0';
+ /* resize to new length */
+ final_size = (size_t)(output_ptr - output) + 1;
+ resized_output = (char*)parson_malloc(final_size);
+ if (resized_output == NULL) {
+ goto error;
+ }
+ memcpy(resized_output, output, final_size);
+ parson_free(output);
+ return resized_output;
+error:
+ parson_free(output);
+ return NULL;
+}
+
+/* Return processed contents of a string between quotes and
+ skips passed argument to a matching quote. */
+static char * get_quoted_string(const char **string) {
+ const char *string_start = *string;
+ size_t string_len = 0;
+ skip_quotes(string);
+ if (**string == '\0') {
+ return NULL;
+ }
+ string_len = *string - string_start - 2; /* length without quotes */
+ return process_string(string_start + 1, string_len);
+}
+
+static JSON_Value * parse_value(const char **string, size_t nesting) {
+ if (nesting > MAX_NESTING) {
+ return NULL;
+ }
+ SKIP_WHITESPACES(string);
+ switch (**string) {
+ case '{':
+ return parse_object_value(string, nesting + 1);
+ case '[':
+ return parse_array_value(string, nesting + 1);
+ case '\"':
+ return parse_string_value(string);
+ case 'f':
+ case 't':
+ return parse_boolean_value(string);
+ case '-':
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ case '8':
+ case '9':
+ return parse_number_value(string);
+ case 'n':
+ return parse_null_value(string);
+ default:
+ return NULL;
+ }
+}
+
+static JSON_Value * parse_object_value(const char **string, size_t nesting) {
+ JSON_Value *output_value = json_value_init_object(), *new_value = NULL;
+ JSON_Object *output_object = json_value_get_object(output_value);
+ char *new_key = NULL;
+ if (output_value == NULL) {
+ return NULL;
+ }
+ SKIP_CHAR(string);
+ SKIP_WHITESPACES(string);
+ if (**string == '}') { /* empty object */
+ SKIP_CHAR(string);
+ return output_value;
+ }
+ while (**string != '\0') {
+ new_key = get_quoted_string(string);
+ SKIP_WHITESPACES(string);
+ if (new_key == NULL || **string != ':') {
+ json_value_free(output_value);
+ return NULL;
+ }
+ SKIP_CHAR(string);
+ new_value = parse_value(string, nesting);
+ if (new_value == NULL) {
+ parson_free(new_key);
+ json_value_free(output_value);
+ return NULL;
+ }
+ if(json_object_add(output_object, new_key, new_value) == JSONFailure) {
+ parson_free(new_key);
+ parson_free(new_value);
+ json_value_free(output_value);
+ return NULL;
+ }
+ parson_free(new_key);
+ SKIP_WHITESPACES(string);
+ if (**string != ',') {
+ break;
+ }
+ SKIP_CHAR(string);
+ SKIP_WHITESPACES(string);
+ }
+ SKIP_WHITESPACES(string);
+ if (**string != '}' || /* Trim object after parsing is over */
+ json_object_resize(output_object, json_object_get_count(output_object)) == JSONFailure) {
+ json_value_free(output_value);
+ return NULL;
+ }
+ SKIP_CHAR(string);
+ return output_value;
+}
+
+static JSON_Value * parse_array_value(const char **string, size_t nesting) {
+ JSON_Value *output_value = json_value_init_array(), *new_array_value = NULL;
+ JSON_Array *output_array = json_value_get_array(output_value);
+ if (!output_value) {
+ return NULL;
+ }
+ SKIP_CHAR(string);
+ SKIP_WHITESPACES(string);
+ if (**string == ']') { /* empty array */
+ SKIP_CHAR(string);
+ return output_value;
+ }
+ while (**string != '\0') {
+ new_array_value = parse_value(string, nesting);
+ if (!new_array_value) {
+ json_value_free(output_value);
+ return NULL;
+ }
+ if(json_array_add(output_array, new_array_value) == JSONFailure) {
+ parson_free(new_array_value);
+ json_value_free(output_value);
+ return NULL;
+ }
+ SKIP_WHITESPACES(string);
+ if (**string != ',') {
+ break;
+ }
+ SKIP_CHAR(string);
+ SKIP_WHITESPACES(string);
+ }
+ SKIP_WHITESPACES(string);
+ if (**string != ']' || /* Trim array after parsing is over */
+ json_array_resize(output_array, json_array_get_count(output_array)) == JSONFailure) {
+ json_value_free(output_value);
+ return NULL;
+ }
+ SKIP_CHAR(string);
+ return output_value;
+}
+
+static JSON_Value * parse_string_value(const char **string) {
+ JSON_Value *value = NULL;
+ char *new_string = get_quoted_string(string);
+ if (new_string == NULL) {
+ return NULL;
+ }
+ value = json_value_init_string_no_copy(new_string);
+ if (value == NULL) {
+ parson_free(new_string);
+ return NULL;
+ }
+ return value;
+}
+
+static JSON_Value * parse_boolean_value(const char **string) {
+ size_t true_token_size = SIZEOF_TOKEN("true");
+ size_t false_token_size = SIZEOF_TOKEN("false");
+ if (strncmp("true", *string, true_token_size) == 0) {
+ *string += true_token_size;
+ return json_value_init_boolean(1);
+ } else if (strncmp("false", *string, false_token_size) == 0) {
+ *string += false_token_size;
+ return json_value_init_boolean(0);
+ }
+ return NULL;
+}
+
+static JSON_Value * parse_number_value(const char **string) {
+ char *end;
+ double number = strtod(*string, &end);
+ JSON_Value *output_value;
+ if (is_decimal(*string, end - *string)) {
+ *string = end;
+ output_value = json_value_init_number(number);
+ } else {
+ output_value = NULL;
+ }
+ return output_value;
+}
+
+static JSON_Value * parse_null_value(const char **string) {
+ size_t token_size = SIZEOF_TOKEN("null");
+ if (strncmp("null", *string, token_size) == 0) {
+ *string += token_size;
+ return json_value_init_null();
+ }
+ return NULL;
+}
+
+/* Serialization */
+#define APPEND_STRING(str) do { written = append_string(buf, (str)); \
+ if (written < 0) { return -1; } \
+ if (buf != NULL) { buf += written; } \
+ written_total += written; } while(0)
+
+#define APPEND_INDENT(level) do { written = append_indent(buf, (level)); \
+ if (written < 0) { return -1; } \
+ if (buf != NULL) { buf += written; } \
+ written_total += written; } while(0)
+
+static int json_serialize_to_buffer_r(const JSON_Value *value, char *buf, int level, int is_pretty, char *num_buf) {
+ const char *key = NULL, *string = NULL;
+ JSON_Value *temp_value = NULL;
+ JSON_Array *array = NULL;
+ JSON_Object *object = NULL;
+ size_t i = 0, count = 0;
+ double num = 0.0;
+ int written = -1, written_total = 0;
+
+ switch (json_value_get_type(value)) {
+ case JSONArray:
+ array = json_value_get_array(value);
+ count = json_array_get_count(array);
+ APPEND_STRING("[");
+ if (count > 0 && is_pretty) {
+ APPEND_STRING("\n");
+ }
+ for (i = 0; i < count; i++) {
+ if (is_pretty) {
+ APPEND_INDENT(level + 1);
+ }
+ temp_value = json_array_get_value(array, i);
+ written = json_serialize_to_buffer_r(temp_value, buf, level + 1, is_pretty, num_buf);
+ if (written < 0) {
+ return -1;
+ }
+ if (buf != NULL) {
+ buf += written;
+ }
+ written_total += written;
+ if (i < (count - 1)) {
+ APPEND_STRING(",");
+ }
+ if (is_pretty) {
+ APPEND_STRING("\n");
+ }
+ }
+ if (count > 0 && is_pretty) {
+ APPEND_INDENT(level);
+ }
+ APPEND_STRING("]");
+ return written_total;
+ case JSONObject:
+ object = json_value_get_object(value);
+ count = json_object_get_count(object);
+ APPEND_STRING("{");
+ if (count > 0 && is_pretty) {
+ APPEND_STRING("\n");
+ }
+ for (i = 0; i < count; i++) {
+ key = json_object_get_name(object, i);
+ if (is_pretty) {
+ APPEND_INDENT(level + 1);
+ }
+ written = json_serialize_string(key, buf);
+ if (written < 0) {
+ return -1;
+ }
+ if (buf != NULL) {
+ buf += written;
+ }
+ written_total += written;
+ APPEND_STRING(":");
+ if (is_pretty) {
+ APPEND_STRING(" ");
+ }
+ temp_value = json_object_get_value(object, key);
+ written = json_serialize_to_buffer_r(temp_value, buf, level + 1, is_pretty, num_buf);
+ if (written < 0) {
+ return -1;
+ }
+ if (buf != NULL) {
+ buf += written;
+ }
+ written_total += written;
+ if (i < (count - 1)) {
+ APPEND_STRING(",");
+ }
+ if (is_pretty) {
+ APPEND_STRING("\n");
+ }
+ }
+ if (count > 0 && is_pretty) {
+ APPEND_INDENT(level);
+ }
+ APPEND_STRING("}");
+ return written_total;
+ case JSONString:
+ string = json_value_get_string(value);
+ written = json_serialize_string(string, buf);
+ if (written < 0) {
+ return -1;
+ }
+ if (buf != NULL) {
+ buf += written;
+ }
+ written_total += written;
+ return written_total;
+ case JSONBoolean:
+ if (json_value_get_boolean(value)) {
+ APPEND_STRING("true");
+ } else {
+ APPEND_STRING("false");
+ }
+ return written_total;
+ case JSONNumber:
+ num = json_value_get_number(value);
+ if (buf != NULL) {
+ num_buf = buf;
+ }
+ if (num == ((double)(int)num)) { /* check if num is integer */
+ written = sprintf(num_buf, "%d", (int)num);
+ } else {
+ written = sprintf(num_buf, DOUBLE_SERIALIZATION_FORMAT, num);
+ }
+ if (written < 0) {
+ return -1;
+ }
+ if (buf != NULL) {
+ buf += written;
+ }
+ written_total += written;
+ return written_total;
+ case JSONNull:
+ APPEND_STRING("null");
+ return written_total;
+ case JSONError:
+ return -1;
+ default:
+ return -1;
+ }
+}
+
+static int json_serialize_string(const char *string, char *buf) {
+ size_t i = 0, len = strlen(string);
+ char c = '\0';
+ int written = -1, written_total = 0;
+ APPEND_STRING("\"");
+ for (i = 0; i < len; i++) {
+ c = string[i];
+ switch (c) {
+ case '\"':
+ APPEND_STRING("\\\"");
+ break;
+ case '\\':
+ APPEND_STRING("\\\\");
+ break;
+ case '/':
+ APPEND_STRING("\\/");
+ break; /* to make json embeddable in xml\/html */
+ case '\b':
+ APPEND_STRING("\\b");
+ break;
+ case '\f':
+ APPEND_STRING("\\f");
+ break;
+ case '\n':
+ APPEND_STRING("\\n");
+ break;
+ case '\r':
+ APPEND_STRING("\\r");
+ break;
+ case '\t':
+ APPEND_STRING("\\t");
+ break;
+ default:
+ if (buf != NULL) {
+ buf[0] = c;
+ buf += 1;
+ }
+ written_total += 1;
+ break;
+ }
+ }
+ APPEND_STRING("\"");
+ return written_total;
+}
+
+static int append_indent(char *buf, int level) {
+ int i;
+ int written = -1, written_total = 0;
+ for (i = 0; i < level; i++) {
+ APPEND_STRING(" ");
+ }
+ return written_total;
+}
+
+static int append_string(char *buf, const char *string) {
+ if (buf == NULL) {
+ return (int)strlen(string);
+ }
+ return sprintf(buf, "%s", string);
+}
+
+#undef APPEND_STRING
+#undef APPEND_INDENT
+
+/* Parser API */
+JSON_Value * json_parse_file(const char *filename) {
+ char *file_contents = read_file(filename);
+ JSON_Value *output_value = NULL;
+ if (file_contents == NULL) {
+ return NULL;
+ }
+ output_value = json_parse_string(file_contents);
+ parson_free(file_contents);
+ return output_value;
+}
+
+JSON_Value * json_parse_file_with_comments(const char *filename) {
+ char *file_contents = read_file(filename);
+ JSON_Value *output_value = NULL;
+ if (file_contents == NULL) {
+ return NULL;
+ }
+ output_value = json_parse_string_with_comments(file_contents);
+ parson_free(file_contents);
+ return output_value;
+}
+
+JSON_Value * json_parse_string(const char *string) {
+ if (string == NULL) {
+ return NULL;
+ }
+ SKIP_WHITESPACES(&string);
+ if (*string != '{' && *string != '[') {
+ return NULL;
+ }
+ return parse_value((const char**)&string, 0);
+}
+
+JSON_Value * json_parse_string_with_comments(const char *string) {
+ JSON_Value *result = NULL;
+ char *string_mutable_copy = NULL, *string_mutable_copy_ptr = NULL;
+ string_mutable_copy = parson_strdup(string);
+ if (string_mutable_copy == NULL) {
+ return NULL;
+ }
+ remove_comments(string_mutable_copy, "/*", "*/");
+ remove_comments(string_mutable_copy, "//", "\n");
+ string_mutable_copy_ptr = string_mutable_copy;
+ SKIP_WHITESPACES(&string_mutable_copy_ptr);
+ if (*string_mutable_copy_ptr != '{' && *string_mutable_copy_ptr != '[') {
+ parson_free(string_mutable_copy);
+ return NULL;
+ }
+ result = parse_value((const char**)&string_mutable_copy_ptr, 0);
+ parson_free(string_mutable_copy);
+ return result;
+}
+
+
+/* JSON Object API */
+
+JSON_Value * json_object_get_value(const JSON_Object *object, const char *name) {
+ if (object == NULL || name == NULL) {
+ return NULL;
+ }
+ return json_object_nget_value(object, name, strlen(name));
+}
+
+const char * json_object_get_string(const JSON_Object *object, const char *name) {
+ return json_value_get_string(json_object_get_value(object, name));
+}
+
+double json_object_get_number(const JSON_Object *object, const char *name) {
+ return json_value_get_number(json_object_get_value(object, name));
+}
+
+JSON_Object * json_object_get_object(const JSON_Object *object, const char *name) {
+ return json_value_get_object(json_object_get_value(object, name));
+}
+
+JSON_Array * json_object_get_array(const JSON_Object *object, const char *name) {
+ return json_value_get_array(json_object_get_value(object, name));
+}
+
+int json_object_get_boolean(const JSON_Object *object, const char *name) {
+ return json_value_get_boolean(json_object_get_value(object, name));
+}
+
+JSON_Value * json_object_dotget_value(const JSON_Object *object, const char *name) {
+ const char *dot_position = strchr(name, '.');
+ if (!dot_position) {
+ return json_object_get_value(object, name);
+ }
+ object = json_value_get_object(json_object_nget_value(object, name, dot_position - name));
+ return json_object_dotget_value(object, dot_position + 1);
+}
+
+const char * json_object_dotget_string(const JSON_Object *object, const char *name) {
+ return json_value_get_string(json_object_dotget_value(object, name));
+}
+
+double json_object_dotget_number(const JSON_Object *object, const char *name) {
+ return json_value_get_number(json_object_dotget_value(object, name));
+}
+
+JSON_Object * json_object_dotget_object(const JSON_Object *object, const char *name) {
+ return json_value_get_object(json_object_dotget_value(object, name));
+}
+
+JSON_Array * json_object_dotget_array(const JSON_Object *object, const char *name) {
+ return json_value_get_array(json_object_dotget_value(object, name));
+}
+
+int json_object_dotget_boolean(const JSON_Object *object, const char *name) {
+ return json_value_get_boolean(json_object_dotget_value(object, name));
+}
+
+size_t json_object_get_count(const JSON_Object *object) {
+ return object ? object->count : 0;
+}
+
+const char * json_object_get_name(const JSON_Object *object, size_t index) {
+ if (index >= json_object_get_count(object)) {
+ return NULL;
+ }
+ return object->names[index];
+}
+
+/* JSON Array API */
+JSON_Value * json_array_get_value(const JSON_Array *array, size_t index) {
+ if (index >= json_array_get_count(array)) {
+ return NULL;
+ }
+ return array->items[index];
+}
+
+const char * json_array_get_string(const JSON_Array *array, size_t index) {
+ return json_value_get_string(json_array_get_value(array, index));
+}
+
+double json_array_get_number(const JSON_Array *array, size_t index) {
+ return json_value_get_number(json_array_get_value(array, index));
+}
+
+JSON_Object * json_array_get_object(const JSON_Array *array, size_t index) {
+ return json_value_get_object(json_array_get_value(array, index));
+}
+
+JSON_Array * json_array_get_array(const JSON_Array *array, size_t index) {
+ return json_value_get_array(json_array_get_value(array, index));
+}
+
+int json_array_get_boolean(const JSON_Array *array, size_t index) {
+ return json_value_get_boolean(json_array_get_value(array, index));
+}
+
+size_t json_array_get_count(const JSON_Array *array) {
+ return array ? array->count : 0;
+}
+
+/* JSON Value API */
+JSON_Value_Type json_value_get_type(const JSON_Value *value) {
+ return value ? value->type : JSONError;
+}
+
+JSON_Object * json_value_get_object(const JSON_Value *value) {
+ return json_value_get_type(value) == JSONObject ? value->value.object : NULL;
+}
+
+JSON_Array * json_value_get_array(const JSON_Value *value) {
+ return json_value_get_type(value) == JSONArray ? value->value.array : NULL;
+}
+
+const char * json_value_get_string(const JSON_Value *value) {
+ return json_value_get_type(value) == JSONString ? value->value.string : NULL;
+}
+
+double json_value_get_number(const JSON_Value *value) {
+ return json_value_get_type(value) == JSONNumber ? value->value.number : 0;
+}
+
+int json_value_get_boolean(const JSON_Value *value) {
+ return json_value_get_type(value) == JSONBoolean ? value->value.boolean : -1;
+}
+
+void json_value_free(JSON_Value *value) {
+ switch (json_value_get_type(value)) {
+ case JSONObject:
+ json_object_free(value->value.object);
+ break;
+ case JSONString:
+ if (value->value.string) {
+ parson_free(value->value.string);
+ }
+ break;
+ case JSONArray:
+ json_array_free(value->value.array);
+ break;
+ default:
+ break;
+ }
+ parson_free(value);
+}
+
+JSON_Value * json_value_init_object(void) {
+ JSON_Value *new_value = (JSON_Value*)parson_malloc(sizeof(JSON_Value));
+ if (!new_value) {
+ return NULL;
+ }
+ new_value->type = JSONObject;
+ new_value->value.object = json_object_init();
+ if (!new_value->value.object) {
+ parson_free(new_value);
+ return NULL;
+ }
+ return new_value;
+}
+
+JSON_Value * json_value_init_array(void) {
+ JSON_Value *new_value = (JSON_Value*)parson_malloc(sizeof(JSON_Value));
+ if (!new_value) {
+ return NULL;
+ }
+ new_value->type = JSONArray;
+ new_value->value.array = json_array_init();
+ if (!new_value->value.array) {
+ parson_free(new_value);
+ return NULL;
+ }
+ return new_value;
+}
+
+JSON_Value * json_value_init_string(const char *string) {
+ char *copy = NULL;
+ JSON_Value *value;
+ size_t string_len = 0;
+ if (string == NULL) {
+ return NULL;
+ }
+ string_len = strlen(string);
+ if (!is_valid_utf8(string, string_len)) {
+ return NULL;
+ }
+ copy = parson_strndup(string, string_len);
+ if (copy == NULL) {
+ return NULL;
+ }
+ value = json_value_init_string_no_copy(copy);
+ if (value == NULL) {
+ parson_free(copy);
+ }
+ return value;
+}
+
+JSON_Value * json_value_init_number(double number) {
+ JSON_Value *new_value = (JSON_Value*)parson_malloc(sizeof(JSON_Value));
+ if (!new_value) {
+ return NULL;
+ }
+ new_value->type = JSONNumber;
+ new_value->value.number = number;
+ return new_value;
+}
+
+JSON_Value * json_value_init_boolean(int boolean) {
+ JSON_Value *new_value = (JSON_Value*)parson_malloc(sizeof(JSON_Value));
+ if (!new_value) {
+ return NULL;
+ }
+ new_value->type = JSONBoolean;
+ new_value->value.boolean = boolean ? 1 : 0;
+ return new_value;
+}
+
+JSON_Value * json_value_init_null(void) {
+ JSON_Value *new_value = (JSON_Value*)parson_malloc(sizeof(JSON_Value));
+ if (!new_value) {
+ return NULL;
+ }
+ new_value->type = JSONNull;
+ return new_value;
+}
+
+JSON_Value * json_value_deep_copy(const JSON_Value *value) {
+ size_t i = 0;
+ JSON_Value *return_value = NULL, *temp_value_copy = NULL, *temp_value = NULL;
+ const char *temp_string = NULL, *temp_key = NULL;
+ char *temp_string_copy = NULL;
+ JSON_Array *temp_array = NULL, *temp_array_copy = NULL;
+ JSON_Object *temp_object = NULL, *temp_object_copy = NULL;
+
+ switch (json_value_get_type(value)) {
+ case JSONArray:
+ temp_array = json_value_get_array(value);
+ return_value = json_value_init_array();
+ if (return_value == NULL) {
+ return NULL;
+ }
+ temp_array_copy = json_value_get_array(return_value);
+ for (i = 0; i < json_array_get_count(temp_array); i++) {
+ temp_value = json_array_get_value(temp_array, i);
+ temp_value_copy = json_value_deep_copy(temp_value);
+ if (temp_value_copy == NULL) {
+ json_value_free(return_value);
+ return NULL;
+ }
+ if (json_array_add(temp_array_copy, temp_value_copy) == JSONFailure) {
+ json_value_free(return_value);
+ json_value_free(temp_value_copy);
+ return NULL;
+ }
+ }
+ return return_value;
+ case JSONObject:
+ temp_object = json_value_get_object(value);
+ return_value = json_value_init_object();
+ if (return_value == NULL) {
+ return NULL;
+ }
+ temp_object_copy = json_value_get_object(return_value);
+ for (i = 0; i < json_object_get_count(temp_object); i++) {
+ temp_key = json_object_get_name(temp_object, i);
+ temp_value = json_object_get_value(temp_object, temp_key);
+ temp_value_copy = json_value_deep_copy(temp_value);
+ if (temp_value_copy == NULL) {
+ json_value_free(return_value);
+ return NULL;
+ }
+ if (json_object_add(temp_object_copy, temp_key, temp_value_copy) == JSONFailure) {
+ json_value_free(return_value);
+ json_value_free(temp_value_copy);
+ return NULL;
+ }
+ }
+ return return_value;
+ case JSONBoolean:
+ return json_value_init_boolean(json_value_get_boolean(value));
+ case JSONNumber:
+ return json_value_init_number(json_value_get_number(value));
+ case JSONString:
+ temp_string = json_value_get_string(value);
+ temp_string_copy = parson_strdup(temp_string);
+ if (temp_string_copy == NULL) {
+ return NULL;
+ }
+ return_value = json_value_init_string_no_copy(temp_string_copy);
+ if (return_value == NULL) {
+ parson_free(temp_string_copy);
+ }
+ return return_value;
+ case JSONNull:
+ return json_value_init_null();
+ case JSONError:
+ return NULL;
+ default:
+ return NULL;
+ }
+}
+
+size_t json_serialization_size(const JSON_Value *value) {
+ char num_buf[1100]; /* recursively allocating buffer on stack is a bad idea, so let's do it only once */
+ int res = json_serialize_to_buffer_r(value, NULL, 0, 0, num_buf);
+ return res < 0 ? 0 : (size_t)(res + 1);
+}
+
+JSON_Status json_serialize_to_buffer(const JSON_Value *value, char *buf, size_t buf_size_in_bytes) {
+ int written = -1;
+ size_t needed_size_in_bytes = json_serialization_size(value);
+ if (needed_size_in_bytes == 0 || buf_size_in_bytes < needed_size_in_bytes) {
+ return JSONFailure;
+ }
+ written = json_serialize_to_buffer_r(value, buf, 0, 0, NULL);
+ if (written < 0) {
+ return JSONFailure;
+ }
+ return JSONSuccess;
+}
+
+JSON_Status json_serialize_to_file(const JSON_Value *value, const char *filename) {
+ JSON_Status return_code = JSONSuccess;
+ FILE *fp = NULL;
+ char *serialized_string = json_serialize_to_string(value);
+ if (serialized_string == NULL) {
+ return JSONFailure;
+ }
+ fp = fopen (filename, "w");
+ if (fp != NULL) {
+ if (fputs (serialized_string, fp) == EOF) {
+ return_code = JSONFailure;
+ }
+ if (fclose (fp) == EOF) {
+ return_code = JSONFailure;
+ }
+ }
+ json_free_serialized_string(serialized_string);
+ return return_code;
+}
+
+char * json_serialize_to_string(const JSON_Value *value) {
+ JSON_Status serialization_result = JSONFailure;
+ size_t buf_size_bytes = json_serialization_size(value);
+ char *buf = NULL;
+ if (buf_size_bytes == 0) {
+ return NULL;
+ }
+ buf = (char*)parson_malloc(buf_size_bytes);
+ if (buf == NULL) {
+ return NULL;
+ }
+ serialization_result = json_serialize_to_buffer(value, buf, buf_size_bytes);
+ if (serialization_result == JSONFailure) {
+ json_free_serialized_string(buf);
+ return NULL;
+ }
+ return buf;
+}
+
+size_t json_serialization_size_pretty(const JSON_Value *value) {
+ char num_buf[1100]; /* recursively allocating buffer on stack is a bad idea, so let's do it only once */
+ int res = json_serialize_to_buffer_r(value, NULL, 0, 1, num_buf);
+ return res < 0 ? 0 : (size_t)(res + 1);
+}
+
+JSON_Status json_serialize_to_buffer_pretty(const JSON_Value *value, char *buf, size_t buf_size_in_bytes) {
+ int written = -1;
+ size_t needed_size_in_bytes = json_serialization_size_pretty(value);
+ if (needed_size_in_bytes == 0 || buf_size_in_bytes < needed_size_in_bytes) {
+ return JSONFailure;
+ }
+ written = json_serialize_to_buffer_r(value, buf, 0, 1, NULL);
+ if (written < 0) {
+ return JSONFailure;
+ }
+ return JSONSuccess;
+}
+
+JSON_Status json_serialize_to_file_pretty(const JSON_Value *value, const char *filename) {
+ JSON_Status return_code = JSONSuccess;
+ FILE *fp = NULL;
+ char *serialized_string = json_serialize_to_string_pretty(value);
+ if (serialized_string == NULL) {
+ return JSONFailure;
+ }
+ fp = fopen (filename, "w");
+ if (fp != NULL) {
+ if (fputs (serialized_string, fp) == EOF) {
+ return_code = JSONFailure;
+ }
+ if (fclose (fp) == EOF) {
+ return_code = JSONFailure;
+ }
+ }
+ json_free_serialized_string(serialized_string);
+ return return_code;
+}
+
+char * json_serialize_to_string_pretty(const JSON_Value *value) {
+ JSON_Status serialization_result = JSONFailure;
+ size_t buf_size_bytes = json_serialization_size_pretty(value);
+ char *buf = NULL;
+ if (buf_size_bytes == 0) {
+ return NULL;
+ }
+ buf = (char*)parson_malloc(buf_size_bytes);
+ if (buf == NULL) {
+ return NULL;
+ }
+ serialization_result = json_serialize_to_buffer_pretty(value, buf, buf_size_bytes);
+ if (serialization_result == JSONFailure) {
+ json_free_serialized_string(buf);
+ return NULL;
+ }
+ return buf;
+}
+
+void json_free_serialized_string(char *string) {
+ parson_free(string);
+}
+
+JSON_Status json_array_remove(JSON_Array *array, size_t ix) {
+ JSON_Value *temp_value = NULL;
+ size_t last_element_ix = 0;
+ if (array == NULL || ix >= json_array_get_count(array)) {
+ return JSONFailure;
+ }
+ last_element_ix = json_array_get_count(array) - 1;
+ json_value_free(json_array_get_value(array, ix));
+ if (ix != last_element_ix) { /* Replace value with one from the end of array */
+ temp_value = json_array_get_value(array, last_element_ix);
+ if (temp_value == NULL) {
+ return JSONFailure;
+ }
+ array->items[ix] = temp_value;
+ }
+ array->count -= 1;
+ return JSONSuccess;
+}
+
+JSON_Status json_array_replace_value(JSON_Array *array, size_t ix, JSON_Value *value) {
+ if (array == NULL || value == NULL || ix >= json_array_get_count(array)) {
+ return JSONFailure;
+ }
+ json_value_free(json_array_get_value(array, ix));
+ array->items[ix] = value;
+ return JSONSuccess;
+}
+
+JSON_Status json_array_replace_string(JSON_Array *array, size_t i, const char* string) {
+ JSON_Value *value = json_value_init_string(string);
+ if (value == NULL) {
+ return JSONFailure;
+ }
+ if (json_array_replace_value(array, i, value) == JSONFailure) {
+ json_value_free(value);
+ return JSONFailure;
+ }
+ return JSONSuccess;
+}
+
+JSON_Status json_array_replace_number(JSON_Array *array, size_t i, double number) {
+ JSON_Value *value = json_value_init_number(number);
+ if (value == NULL) {
+ return JSONFailure;
+ }
+ if (json_array_replace_value(array, i, value) == JSONFailure) {
+ json_value_free(value);
+ return JSONFailure;
+ }
+ return JSONSuccess;
+}
+
+JSON_Status json_array_replace_boolean(JSON_Array *array, size_t i, int boolean) {
+ JSON_Value *value = json_value_init_boolean(boolean);
+ if (value == NULL) {
+ return JSONFailure;
+ }
+ if (json_array_replace_value(array, i, value) == JSONFailure) {
+ json_value_free(value);
+ return JSONFailure;
+ }
+ return JSONSuccess;
+}
+
+JSON_Status json_array_replace_null(JSON_Array *array, size_t i) {
+ JSON_Value *value = json_value_init_null();
+ if (value == NULL) {
+ return JSONFailure;
+ }
+ if (json_array_replace_value(array, i, value) == JSONFailure) {
+ json_value_free(value);
+ return JSONFailure;
+ }
+ return JSONSuccess;
+}
+
+JSON_Status json_array_clear(JSON_Array *array) {
+ size_t i = 0;
+ if (array == NULL) {
+ return JSONFailure;
+ }
+ for (i = 0; i < json_array_get_count(array); i++) {
+ json_value_free(json_array_get_value(array, i));
+ }
+ array->count = 0;
+ return JSONSuccess;
+}
+
+JSON_Status json_array_append_value(JSON_Array *array, JSON_Value *value) {
+ if (array == NULL || value == NULL) {
+ return JSONFailure;
+ }
+ return json_array_add(array, value);
+}
+
+JSON_Status json_array_append_string(JSON_Array *array, const char *string) {
+ JSON_Value *value = json_value_init_string(string);
+ if (value == NULL) {
+ return JSONFailure;
+ }
+ if (json_array_append_value(array, value) == JSONFailure) {
+ json_value_free(value);
+ return JSONFailure;
+ }
+ return JSONSuccess;
+}
+
+JSON_Status json_array_append_number(JSON_Array *array, double number) {
+ JSON_Value *value = json_value_init_number(number);
+ if (value == NULL) {
+ return JSONFailure;
+ }
+ if (json_array_append_value(array, value) == JSONFailure) {
+ json_value_free(value);
+ return JSONFailure;
+ }
+ return JSONSuccess;
+}
+
+JSON_Status json_array_append_boolean(JSON_Array *array, int boolean) {
+ JSON_Value *value = json_value_init_boolean(boolean);
+ if (value == NULL) {
+ return JSONFailure;
+ }
+ if (json_array_append_value(array, value) == JSONFailure) {
+ json_value_free(value);
+ return JSONFailure;
+ }
+ return JSONSuccess;
+}
+
+JSON_Status json_array_append_null(JSON_Array *array) {
+ JSON_Value *value = json_value_init_null();
+ if (value == NULL) {
+ return JSONFailure;
+ }
+ if (json_array_append_value(array, value) == JSONFailure) {
+ json_value_free(value);
+ return JSONFailure;
+ }
+ return JSONSuccess;
+}
+
+JSON_Status json_object_set_value(JSON_Object *object, const char *name, JSON_Value *value) {
+ size_t i = 0;
+ JSON_Value *old_value;
+ if (object == NULL || name == NULL || value == NULL) {
+ return JSONFailure;
+ }
+ old_value = json_object_get_value(object, name);
+ if (old_value != NULL) { /* free and overwrite old value */
+ json_value_free(old_value);
+ for (i = 0; i < json_object_get_count(object); i++) {
+ if (strcmp(object->names[i], name) == 0) {
+ object->values[i] = value;
+ return JSONSuccess;
+ }
+ }
+ }
+ /* add new key value pair */
+ return json_object_add(object, name, value);
+}
+
+JSON_Status json_object_set_string(JSON_Object *object, const char *name, const char *string) {
+ return json_object_set_value(object, name, json_value_init_string(string));
+}
+
+JSON_Status json_object_set_number(JSON_Object *object, const char *name, double number) {
+ return json_object_set_value(object, name, json_value_init_number(number));
+}
+
+JSON_Status json_object_set_boolean(JSON_Object *object, const char *name, int boolean) {
+ return json_object_set_value(object, name, json_value_init_boolean(boolean));
+}
+
+JSON_Status json_object_set_null(JSON_Object *object, const char *name) {
+ return json_object_set_value(object, name, json_value_init_null());
+}
+
+JSON_Status json_object_dotset_value(JSON_Object *object, const char *name, JSON_Value *value) {
+ const char *dot_pos = NULL;
+ char *current_name = NULL;
+ JSON_Object *temp_obj = NULL;
+ JSON_Value *new_value = NULL;
+ if (value == NULL || name == NULL || value == NULL) {
+ return JSONFailure;
+ }
+ dot_pos = strchr(name, '.');
+ if (dot_pos == NULL) {
+ return json_object_set_value(object, name, value);
+ } else {
+ current_name = parson_strndup(name, dot_pos - name);
+ temp_obj = json_object_get_object(object, current_name);
+ if (temp_obj == NULL) {
+ new_value = json_value_init_object();
+ if (new_value == NULL) {
+ parson_free(current_name);
+ return JSONFailure;
+ }
+ if (json_object_add(object, current_name, new_value) == JSONFailure) {
+ json_value_free(new_value);
+ parson_free(current_name);
+ return JSONFailure;
+ }
+ temp_obj = json_object_get_object(object, current_name);
+ }
+ parson_free(current_name);
+ return json_object_dotset_value(temp_obj, dot_pos + 1, value);
+ }
+}
+
+JSON_Status json_object_dotset_string(JSON_Object *object, const char *name, const char *string) {
+ JSON_Value *value = json_value_init_string(string);
+ if (value == NULL) {
+ return JSONFailure;
+ }
+ if (json_object_dotset_value(object, name, value) == JSONFailure) {
+ json_value_free(value);
+ return JSONFailure;
+ }
+ return JSONSuccess;
+}
+
+JSON_Status json_object_dotset_number(JSON_Object *object, const char *name, double number) {
+ JSON_Value *value = json_value_init_number(number);
+ if (value == NULL) {
+ return JSONFailure;
+ }
+ if (json_object_dotset_value(object, name, value) == JSONFailure) {
+ json_value_free(value);
+ return JSONFailure;
+ }
+ return JSONSuccess;
+}
+
+JSON_Status json_object_dotset_boolean(JSON_Object *object, const char *name, int boolean) {
+ JSON_Value *value = json_value_init_boolean(boolean);
+ if (value == NULL) {
+ return JSONFailure;
+ }
+ if (json_object_dotset_value(object, name, value) == JSONFailure) {
+ json_value_free(value);
+ return JSONFailure;
+ }
+ return JSONSuccess;
+}
+
+JSON_Status json_object_dotset_null(JSON_Object *object, const char *name) {
+ JSON_Value *value = json_value_init_null();
+ if (value == NULL) {
+ return JSONFailure;
+ }
+ if (json_object_dotset_value(object, name, value) == JSONFailure) {
+ json_value_free(value);
+ return JSONFailure;
+ }
+ return JSONSuccess;
+}
+
+JSON_Status json_object_remove(JSON_Object *object, const char *name) {
+ size_t i = 0, last_item_index = 0;
+ if (object == NULL || json_object_get_value(object, name) == NULL) {
+ return JSONFailure;
+ }
+ last_item_index = json_object_get_count(object) - 1;
+ for (i = 0; i < json_object_get_count(object); i++) {
+ if (strcmp(object->names[i], name) == 0) {
+ parson_free(object->names[i]);
+ json_value_free(object->values[i]);
+ if (i != last_item_index) { /* Replace key value pair with one from the end */
+ object->names[i] = object->names[last_item_index];
+ object->values[i] = object->values[last_item_index];
+ }
+ object->count -= 1;
+ return JSONSuccess;
+ }
+ }
+ return JSONFailure; /* No execution path should end here */
+}
+
+JSON_Status json_object_dotremove(JSON_Object *object, const char *name) {
+ const char *dot_pos = strchr(name, '.');
+ char *current_name = NULL;
+ JSON_Object *temp_obj = NULL;
+ if (dot_pos == NULL) {
+ return json_object_remove(object, name);
+ } else {
+ current_name = parson_strndup(name, dot_pos - name);
+ temp_obj = json_object_get_object(object, current_name);
+ if (temp_obj == NULL) {
+ parson_free(current_name);
+ return JSONFailure;
+ }
+ parson_free(current_name);
+ return json_object_dotremove(temp_obj, dot_pos + 1);
+ }
+}
+
+JSON_Status json_object_clear(JSON_Object *object) {
+ size_t i = 0;
+ if (object == NULL) {
+ return JSONFailure;
+ }
+ for (i = 0; i < json_object_get_count(object); i++) {
+ parson_free(object->names[i]);
+ json_value_free(object->values[i]);
+ }
+ object->count = 0;
+ return JSONSuccess;
+}
+
+JSON_Status json_validate(const JSON_Value *schema, const JSON_Value *value) {
+ JSON_Value *temp_schema_value = NULL, *temp_value = NULL;
+ JSON_Array *schema_array = NULL, *value_array = NULL;
+ JSON_Object *schema_object = NULL, *value_object = NULL;
+ JSON_Value_Type schema_type = JSONError, value_type = JSONError;
+ const char *key = NULL;
+ size_t i = 0, count = 0;
+ if (schema == NULL || value == NULL) {
+ return JSONFailure;
+ }
+ schema_type = json_value_get_type(schema);
+ value_type = json_value_get_type(value);
+ if (schema_type != value_type && schema_type != JSONNull) { /* null represents all values */
+ return JSONFailure;
+ }
+ switch (schema_type) {
+ case JSONArray:
+ schema_array = json_value_get_array(schema);
+ value_array = json_value_get_array(value);
+ count = json_array_get_count(schema_array);
+ if (count == 0) {
+ return JSONSuccess; /* Empty array allows all types */
+ }
+ /* Get first value from array, rest is ignored */
+ temp_schema_value = json_array_get_value(schema_array, 0);
+ for (i = 0; i < json_array_get_count(value_array); i++) {
+ temp_value = json_array_get_value(value_array, i);
+ if (json_validate(temp_schema_value, temp_value) == 0) {
+ return JSONFailure;
+ }
+ }
+ return JSONSuccess;
+ case JSONObject:
+ schema_object = json_value_get_object(schema);
+ value_object = json_value_get_object(value);
+ count = json_object_get_count(schema_object);
+ if (count == 0) {
+ return JSONSuccess; /* Empty object allows all objects */
+ } else if (json_object_get_count(value_object) < count) {
+ return JSONFailure; /* Tested object mustn't have less name-value pairs than schema */
+ }
+ for (i = 0; i < count; i++) {
+ key = json_object_get_name(schema_object, i);
+ temp_schema_value = json_object_get_value(schema_object, key);
+ temp_value = json_object_get_value(value_object, key);
+ if (temp_value == NULL) {
+ return JSONFailure;
+ }
+ if (json_validate(temp_schema_value, temp_value) == JSONFailure) {
+ return JSONFailure;
+ }
+ }
+ return JSONSuccess;
+ case JSONString:
+ case JSONNumber:
+ case JSONBoolean:
+ case JSONNull:
+ return JSONSuccess; /* equality already tested before switch */
+ case JSONError:
+ default:
+ return JSONFailure;
+ }
+}
+
+JSON_Status json_value_equals(const JSON_Value *a, const JSON_Value *b) {
+ JSON_Object *a_object = NULL, *b_object = NULL;
+ JSON_Array *a_array = NULL, *b_array = NULL;
+ const char *a_string = NULL, *b_string = NULL;
+ const char *key = NULL;
+ size_t a_count = 0, b_count = 0, i = 0;
+ JSON_Value_Type a_type, b_type;
+ a_type = json_value_get_type(a);
+ b_type = json_value_get_type(b);
+ if (a_type != b_type) {
+ return 0;
+ }
+ switch (a_type) {
+ case JSONArray:
+ a_array = json_value_get_array(a);
+ b_array = json_value_get_array(b);
+ a_count = json_array_get_count(a_array);
+ b_count = json_array_get_count(b_array);
+ if (a_count != b_count) {
+ return 0;
+ }
+ for (i = 0; i < a_count; i++) {
+ if (!json_value_equals(json_array_get_value(a_array, i),
+ json_array_get_value(b_array, i))) {
+ return 0;
+ }
+ }
+ return 1;
+ case JSONObject:
+ a_object = json_value_get_object(a);
+ b_object = json_value_get_object(b);
+ a_count = json_object_get_count(a_object);
+ b_count = json_object_get_count(b_object);
+ if (a_count != b_count) {
+ return 0;
+ }
+ for (i = 0; i < a_count; i++) {
+ key = json_object_get_name(a_object, i);
+ if (!json_value_equals(json_object_get_value(a_object, key),
+ json_object_get_value(b_object, key))) {
+ return 0;
+ }
+ }
+ return 1;
+ case JSONString:
+ a_string = json_value_get_string(a);
+ b_string = json_value_get_string(b);
+ return strcmp(a_string, b_string) == 0;
+ case JSONBoolean:
+ return json_value_get_boolean(a) == json_value_get_boolean(b);
+ case JSONNumber:
+ return fabs(json_value_get_number(a) - json_value_get_number(b)) < 0.000001; /* EPSILON */
+ case JSONError:
+ return 1;
+ case JSONNull:
+ return 1;
+ default:
+ return 1;
+ }
+}
+
+JSON_Value_Type json_type(const JSON_Value *value) {
+ return json_value_get_type(value);
+}
+
+JSON_Object * json_object (const JSON_Value *value) {
+ return json_value_get_object(value);
+}
+
+JSON_Array * json_array (const JSON_Value *value) {
+ return json_value_get_array(value);
+}
+
+const char * json_string (const JSON_Value *value) {
+ return json_value_get_string(value);
+}
+
+double json_number (const JSON_Value *value) {
+ return json_value_get_number(value);
+}
+
+int json_boolean(const JSON_Value *value) {
+ return json_value_get_boolean(value);
+}
+
+void json_set_allocation_functions(JSON_Malloc_Function malloc_fun, JSON_Free_Function free_fun) {
+ parson_malloc = malloc_fun;
+ parson_free = free_fun;
+}