initial release

Signed-off-by: Anna (navi) Figueiredo Gomes <navi@vlhl.dev>

1 files changed, 164 insertions, 0 deletions

diff --git a/src/json.c b/src/json.c
new file mode 100644
index 0000000..2e86eaf
--- /dev/null
+++ b/src/json.c
@@ -0,0 +1,164 @@
+#include <assert.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <json.h>
+#include "internal.h"
+
+#include <stdio.h>
+#include <time.h>
+#include <signal.h>
+
+
+struct json *json_parse(const char *str) {
+	return json_parse_len(str, strlen(str));
+}
+
+struct json *json_new(void) {
+	struct json *json = calloc(1, sizeof(*json));
+	if (!json)
+		return NULL;
+	json->type = JSON_INVALID;
+	return json;
+}
+
+void json_detach(struct json *json) {
+	if (!json || !json->parent) return;
+
+	struct json_children *siblings = json->parent->children;
+	if (json->index != --siblings->nitems) {
+		struct json *tmp;
+		for (size_t i = json->index; i < siblings->nitems; i++) {
+			tmp = siblings->items[i] = siblings->items[i + 1];
+			tmp->index = i;
+			tmp->prev = i > 0 ? siblings->items[tmp->index - 1] : NULL;
+			tmp->next = i < siblings->nitems ? siblings->items[tmp->index + 1] : NULL;
+		}
+	}
+
+	json->parent = NULL;
+}
+
+void json_delete(struct json *json) {
+	if (!json)
+		return;
+	json_detach(json);
+	json_clear(json);
+	free(json);
+}
+
+void json_clear(struct json *json) {
+	if (!json) return;
+	switch (json->type) {
+		case JSON_OBJECT:
+		case JSON_ARRAY:
+			for (size_t i = 0; i < json->children->nitems; i++) {
+				json_clear(json->children->items[i]);
+				free(json->children->items[i]);
+			}
+			free(json->children);
+			break;
+		case JSON_STRING:
+			free(json->string);
+			break;
+		default:
+			break;
+	}
+	free(json->key);
+	json->type = JSON_INVALID;
+}
+
+struct json *json_new_array(void) {
+	struct json *json = json_new();
+	if (!json)
+		return NULL;
+	json->type = JSON_ARRAY;
+	init_children(json);
+	return json;
+}
+
+struct json *json_new_bool(bool boolean) {
+	struct json *json = json_new();
+	if (!json)
+		return NULL;
+	json->type = boolean ? JSON_TRUE : JSON_FALSE;
+	return json;
+}
+
+struct json *json_new_null(void) {
+	struct json *json = json_new();
+	if (!json)
+		return NULL;
+	json->type = JSON_NULL;
+	return json;
+}
+
+struct json *json_new_number(double num) {
+	struct json *json = json_new();
+	if (!json)
+		return NULL;
+	json->type = JSON_NUMBER;
+	json->num = num;
+	return json;
+}
+
+struct json *json_new_string(void) {
+	struct json *json = json_new();
+	if (!json)
+		return NULL;
+	json->type = JSON_STRING;
+	json->string = NULL;
+	return json;
+}
+
+struct json *json_new_string_copy(const char *string) {
+	struct json *json = json_new();
+	if (!json)
+		return NULL;
+	json->type = JSON_STRING;
+	json->string = strdup(string);
+	return json;
+}
+
+enum json_parse_result parse_value(struct json **json_out, struct raw_json *raw, size_t depth) {
+	skip_ws(raw);
+	struct json *json = NULL;
+	enum json_parse_result ret = JSON_PARSE_OK;
+	switch (raw->data[raw->index]) {
+		case '"':
+			ret = parse_string(&json, raw);
+			break;
+		case '{':
+			ret = parse_object(&json, raw, depth);
+			break;
+		case '[':
+			ret = parse_array(&json, raw, depth);
+			break;
+		default:
+			ret = parse_literal(&json, raw);
+			break;
+	}
+	*json_out = json;
+	return ret;
+}
+
+struct json *json_parse_len(const char *str, size_t size) {
+	if (!str || size == 0)
+		return NULL;
+	struct json *json = NULL;
+	struct raw_json raw = {
+		.index = 0,
+		.data = str,
+		.size = size
+	};
+	if (parse_value(&json, &raw, 1) != JSON_PARSE_OK) {
+		return NULL;
+	};
+	skip_ws(&raw);
+	if (raw.index != raw.size) {
+		json_delete(json);
+		return NULL;
+	}
+	return json;
+}