Update README and refactor JSON output functions in main.c

Author: Yuhki

README.md

@@ -2,11 +2,11 @@
 
 ## Information
 
-The `items.dat` file format has evolved through various versions, with changes in data structure and additional fields being introduced over time. Below is a summary of the modifications made to the data structure for each version:
+The `items.dat` file format has evolved through various versions, with changes in data structure and additional fields being introduced over time. Below is a summary of the modifications made to the data structure for each version (till recent update as of now):
 
 # items.dat-decoder
 
-A small command-line tool and library for decoding Growtopia `items.dat` files into JSON and for working with the items schema.
+A small command-line tool and library for decoding Growtopia `items.dat` to `items.json`.
 
 **Features**
 - Parse `items.dat` across multiple historical versions.

main.c

@@ -27,6 +27,29 @@ void escape_json_string(const char* input, char* output, size_t output_size) {
     output[j] = 0;
 }
 
+void print_json_string_field(FILE* outf, const char* key, const char* str) {
+    char escaped[1024];
+    escape_json_string(str ? str : "", escaped, sizeof(escaped));
+    fprintf(outf, "      \"%s\": \"%s\",\n", key, escaped);
+}
+
+void print_json_int_field(FILE* outf, const char* key, int value) {
+    fprintf(outf, "      \"%s\": %d,\n", key, value);
+}
+
+void print_json_uint_field(FILE* outf, const char* key, unsigned value) {
+    fprintf(outf, "      \"%s\": %u,\n", key, value);
+}
+
+void print_json_byte_array_field(FILE* outf, const char* key, const unsigned char* arr, size_t len) {
+    fprintf(outf, "      \"%s\": [", key);
+    for (size_t k = 0; k < len; k++) {
+        if (k) fprintf(outf, ", ");
+        fprintf(outf, "%u", arr[k]);
+    }
+    fprintf(outf, "],\n");
+}
+
 int main(int argc, char** argv) {
     ItemsDat items;
     itemsdat_init(&items);
@@ -96,29 +119,6 @@ int main(int argc, char** argv) {
             }
         }
 
-        void print_json_string_field(FILE* outf, const char* key, const char* str) {
-            char escaped[1024];
-            escape_json_string(str ? str : "", escaped, sizeof(escaped));
-            fprintf(outf, "      \"%s\": \"%s\",\n", key, escaped);
-        }
-
-        void print_json_int_field(FILE* outf, const char* key, int value) {
-            fprintf(outf, "      \"%s\": %d,\n", key, value);
-        }
-
-        void print_json_uint_field(FILE* outf, const char* key, unsigned value) {
-            fprintf(outf, "      \"%s\": %u,\n", key, value);
-        }
-
-        void print_json_byte_array_field(FILE* outf, const char* key, const unsigned char* arr, size_t len) {
-            fprintf(outf, "      \"%s\": [", key);
-            for (size_t k = 0; k < len; k++) {
-                if (k) fprintf(outf, ", ");
-                fprintf(outf, "%u", arr[k]);
-            }
-            fprintf(outf, "],\n");
-        }
-
         fprintf(outf, "{\n");
         fprintf(outf, "  \"version\": %d,\n", items.meta.version);
         fprintf(outf, "  \"item_count\": %d,\n", items.meta.itemCount);